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94be5dbdfd22de4ec9ad699803ae18d9d209d824
src/sys/compat/linuxkpi/common/src/linux_80211.c
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Bjoern A. Zeeb 94be5dbdfd LinuxKPI: 802.11: catch possible NULL pointer deref with mt76 
With mt76 we, for the first time, see that txstat->skb or
txstat->info may not be filled in linuxkpi_ieee80211_tx_status_ext().
Guard for these cases checking for skb and info to be not NULL and
assume a TX failure in case info is NULL.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
2026-02-07 00:57:53 +00:00

9160 lines
248 KiB
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/*-
* Copyright (c) 2020-2026 The FreeBSD Foundation
* Copyright (c) 2020-2025 Bjoern A. Zeeb
*
* This software was developed by Björn Zeeb under sponsorship from
* the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Public functions are called linuxkpi_*().
* Internal (static) functions are called lkpi_*().
*
* The internal structures holding metadata over public structures are also
* called lkpi_xxx (usually with a member at the end called xxx).
* Note: we do not replicate the structure names but the general variable names
* for these (e.g., struct hw -> struct lkpi_hw, struct sta -> struct lkpi_sta).
* There are macros to access one from the other.
* We call the internal versions lxxx (e.g., hw -> lhw, sta -> lsta).
*/
/*
* TODO:
* - lots :)
* - HW_CRYPTO: we need a "keystore" and an ordered list for suspend/resume.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/sbuf.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/libkern.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_media.h>
#include <net/ethernet.h>
#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_proto.h>
#include <net80211/ieee80211_ratectl.h>
#include <net80211/ieee80211_radiotap.h>
#include <net80211/ieee80211_vht.h>
#define LINUXKPI_NET80211
#include <net/mac80211.h>
#include <linux/workqueue.h>
#include <linux/rculist.h>
#include "linux_80211.h"
/* #define LKPI_80211_USE_SCANLIST */
/* #define LKPI_80211_BGSCAN */
#define LKPI_80211_WME
#define LKPI_80211_HW_CRYPTO
#define LKPI_80211_HT
#define LKPI_80211_VHT
#if defined(LKPI_80211_VHT) && !defined(LKPI_80211_HT)
#define LKPI_80211_HT
#endif
#if defined(LKPI_80211_HT) && !defined(LKPI_80211_HW_CRYPTO)
#define LKPI_80211_HW_CRYPTO
#endif
static MALLOC_DEFINE(M_LKPI80211, "lkpi80211", "LinuxKPI 80211 compat");
/* XXX-BZ really want this and others in queue.h */
#define TAILQ_ELEM_INIT(elm, field) do { \
(elm)->field.tqe_next = NULL; \
(elm)->field.tqe_prev = NULL; \
} while (0)
/* -------------------------------------------------------------------------- */
SYSCTL_DECL(_compat_linuxkpi);
SYSCTL_NODE(_compat_linuxkpi, OID_AUTO, 80211, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"LinuxKPI 802.11 compatibility layer");
static bool lkpi_order_scanlist = false;
SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, order_scanlist, CTLFLAG_RW,
&lkpi_order_scanlist, 0, "Enable LinuxKPI 802.11 scan list shuffeling");
#if defined(LKPI_80211_HW_CRYPTO)
static bool lkpi_hwcrypto = false;
SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, hw_crypto, CTLFLAG_RDTUN,
&lkpi_hwcrypto, 0, "Enable LinuxKPI 802.11 hardware crypto offload");
static bool lkpi_hwcrypto_tkip = false;
SYSCTL_BOOL(_compat_linuxkpi_80211, OID_AUTO, tkip, CTLFLAG_RDTUN,
&lkpi_hwcrypto_tkip, 0, "Enable LinuxKPI 802.11 TKIP crypto offload");
#endif
/* Keep public for as long as header files are using it too. */
int linuxkpi_debug_80211;
#ifdef LINUXKPI_DEBUG_80211
SYSCTL_INT(_compat_linuxkpi_80211, OID_AUTO, debug, CTLFLAG_RWTUN,
&linuxkpi_debug_80211, 0, "LinuxKPI 802.11 debug level");
#define UNIMPLEMENTED if (linuxkpi_debug_80211 & D80211_TODO) \
printf("XXX-TODO %s:%d: UNIMPLEMENTED\n", __func__, __LINE__)
#define TRACEOK(_fmt, ...) if (linuxkpi_debug_80211 & D80211_TRACEOK) \
printf("%s:%d: TRACEPOINT " _fmt "\n", __func__, __LINE__, ##__VA_ARGS__)
#else
#define UNIMPLEMENTED do { } while (0)
#define TRACEOK(...) do { } while (0)
#endif
/* #define PREP_TX_INFO_DURATION (IEEE80211_TRANS_WAIT * 1000) */
#ifndef PREP_TX_INFO_DURATION
#define PREP_TX_INFO_DURATION 0 /* Let the driver do its thing. */
#endif
/* This is DSAP | SSAP | CTRL | ProtoID/OrgCode{3}. */
const uint8_t rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
/* IEEE 802.11-05/0257r1 */
const uint8_t bridge_tunnel_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
/* IEEE 802.11e Table 20i-UP-to-AC mappings. */
static const uint8_t ieee80211e_up_to_ac[] = {
IEEE80211_AC_BE,
IEEE80211_AC_BK,
IEEE80211_AC_BK,
IEEE80211_AC_BE,
IEEE80211_AC_VI,
IEEE80211_AC_VI,
IEEE80211_AC_VO,
IEEE80211_AC_VO,
#if 0
IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
#endif
};
const struct cfg80211_ops linuxkpi_mac80211cfgops = {
/*
* XXX TODO need a "glue layer" to link cfg80211 ops to
* mac80211 and to the driver or net80211.
* Can we pass some on 1:1? Need to compare the (*f)().
*/
};
#if 0
static struct lkpi_sta *lkpi_find_lsta_by_ni(struct lkpi_vif *,
struct ieee80211_node *);
#endif
static void lkpi_sw_scan_task(void *, int);
static void lkpi_80211_txq_tx_one(struct lkpi_sta *, struct mbuf *);
static void lkpi_80211_txq_task(void *, int);
static void lkpi_80211_lhw_rxq_task(void *, int);
static void lkpi_ieee80211_free_skb_mbuf(void *);
#ifdef LKPI_80211_WME
static int lkpi_wme_update(struct lkpi_hw *, struct ieee80211vap *, bool);
#endif
static void lkpi_ieee80211_wake_queues_locked(struct ieee80211_hw *);
static const char *
lkpi_rate_info_bw_to_str(enum rate_info_bw bw)
{
switch (bw) {
case RATE_INFO_BW_20:
return ("20");
break;
case RATE_INFO_BW_5:
return ("5");
break;
case RATE_INFO_BW_10:
return ("10");
break;
case RATE_INFO_BW_40:
return ("40");
break;
case RATE_INFO_BW_80:
return ("80");
break;
case RATE_INFO_BW_160:
return ("160");
break;
case RATE_INFO_BW_HE_RU:
IMPROVE("nl80211_he_ru_alloc");
return ("HE_RU");
break;
case RATE_INFO_BW_320:
return ("320");
break;
case RATE_INFO_BW_EHT_RU:
IMPROVE("nl80211_eht_ru_alloc");
return ("EHT_RU");
break;
default:
return ("?");
break;
}
}
static void
lkpi_nl80211_sta_info_to_str(struct sbuf *s, const char *prefix,
const uint64_t flags)
{
int bit, i;
sbuf_printf(s, "%s %#010jx", prefix, flags);
i = 0;
for (bit = 0; bit < BITS_PER_TYPE(flags); bit++) {
if ((flags & BIT_ULL(bit)) == 0)
continue;
#define EXPAND_CASE(_flag) \
case NL80211_STA_INFO_ ## _flag: \
sbuf_printf(s, "%c%s", (i == 0) ? '<' : ',', #_flag); \
i++; \
break;
switch (bit) {
EXPAND_CASE(BEACON_RX)
EXPAND_CASE(BEACON_SIGNAL_AVG)
EXPAND_CASE(BSS_PARAM)
EXPAND_CASE(CHAIN_SIGNAL)
EXPAND_CASE(CHAIN_SIGNAL_AVG)
EXPAND_CASE(CONNECTED_TIME)
EXPAND_CASE(INACTIVE_TIME)
EXPAND_CASE(SIGNAL)
EXPAND_CASE(SIGNAL_AVG)
EXPAND_CASE(STA_FLAGS)
EXPAND_CASE(RX_BITRATE)
EXPAND_CASE(RX_PACKETS)
EXPAND_CASE(RX_BYTES)
EXPAND_CASE(RX_DROP_MISC)
EXPAND_CASE(TX_BITRATE)
EXPAND_CASE(TX_PACKETS)
EXPAND_CASE(TX_BYTES)
EXPAND_CASE(TX_BYTES64)
EXPAND_CASE(RX_BYTES64)
EXPAND_CASE(TX_FAILED)
EXPAND_CASE(TX_RETRIES)
EXPAND_CASE(RX_DURATION)
EXPAND_CASE(TX_DURATION)
EXPAND_CASE(ACK_SIGNAL)
EXPAND_CASE(ACK_SIGNAL_AVG)
default:
sbuf_printf(s, "%c?%d", (i == 0) ? '<' : ',', bit);
break;
}
}
#undef EXPAND_CASE
if (i > 0)
sbuf_printf(s, ">");
sbuf_printf(s, "\n");
}
static void
lkpi_80211_dump_lvif_stas(struct lkpi_vif *lvif, struct sbuf *s, bool dump_queues)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct ieee80211vap *vap;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct station_info sinfo;
int error;
uint8_t tid;
vif = LVIF_TO_VIF(lvif);
vap = LVIF_TO_VAP(lvif);
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
wiphy_lock(hw->wiphy);
list_for_each_entry(lsta, &lvif->lsta_list, lsta_list) {
sta = LSTA_TO_STA(lsta);
sbuf_putc(s, '\n');
sbuf_printf(s, "lsta %p sta %p added_to_drv %d\n", lsta, sta, lsta->added_to_drv);
memset(&sinfo, 0, sizeof(sinfo));
error = lkpi_80211_mo_sta_statistics(hw, vif, sta, &sinfo);
if (error == EEXIST) /* Not added to driver. */
continue;
if (error == ENOTSUPP) {
sbuf_printf(s, " sta_statistics not supported\n");
continue;
}
if (error != 0) {
sbuf_printf(s, " sta_statistics failed: %d\n", error);
continue;
}
/* If no RX_BITRATE is reported, try to fill it in from the lsta sinfo. */
if ((sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) == 0 &&
(lsta->sinfo.filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) != 0) {
memcpy(&sinfo.rxrate, &lsta->sinfo.rxrate, sizeof(sinfo.rxrate));
sinfo.filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE);
}
/* If no CHAIN_SIGNAL is reported, try to fill it in from the lsta sinfo. */
if ((sinfo.filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) == 0 &&
(lsta->sinfo.filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) != 0) {
sinfo.chains = lsta->sinfo.chains;
memcpy(sinfo.chain_signal, lsta->sinfo.chain_signal,
sizeof(sinfo.chain_signal));
sinfo.filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL);
}
lkpi_nl80211_sta_info_to_str(s, " nl80211_sta_info (valid fields)", sinfo.filled);
sbuf_printf(s, " connected_time %u inactive_time %u\n",
sinfo.connected_time, sinfo.inactive_time);
sbuf_printf(s, " rx_bytes %ju rx_packets %u rx_dropped_misc %u\n",
(uintmax_t)sinfo.rx_bytes, sinfo.rx_packets, sinfo.rx_dropped_misc);
sbuf_printf(s, " rx_duration %ju rx_beacon %u rx_beacon_signal_avg %d\n",
(uintmax_t)sinfo.rx_duration, sinfo.rx_beacon, (int8_t)sinfo.rx_beacon_signal_avg);
sbuf_printf(s, " tx_bytes %ju tx_packets %u tx_failed %u\n",
(uintmax_t)sinfo.tx_bytes, sinfo.tx_packets, sinfo.tx_failed);
sbuf_printf(s, " tx_duration %ju tx_retries %u\n",
(uintmax_t)sinfo.tx_duration, sinfo.tx_retries);
sbuf_printf(s, " signal %d signal_avg %d ack_signal %d avg_ack_signal %d\n",
sinfo.signal, sinfo.signal_avg, sinfo.ack_signal, sinfo.avg_ack_signal);
sbuf_printf(s, " generation %d assoc_req_ies_len %zu chains %#04x\n",
sinfo.generation, sinfo.assoc_req_ies_len, sinfo.chains);
for (int i = 0; i < nitems(sinfo.chain_signal) && i < IEEE80211_MAX_CHAINS; i++) {
if (!(sinfo.chains & BIT(i)))
continue;
sbuf_printf(s, " chain[%d] signal %d signal_avg %d\n",
i, (int8_t)sinfo.chain_signal[i], (int8_t)sinfo.chain_signal_avg[i]);
}
/* assoc_req_ies, bss_param, sta_flags */
sbuf_printf(s, " rxrate: flags %b bw %u(%s) legacy %u kbit/s mcs %u nss %u\n",
sinfo.rxrate.flags, CFG80211_RATE_INFO_FLAGS_BITS,
sinfo.rxrate.bw, lkpi_rate_info_bw_to_str(sinfo.rxrate.bw),
sinfo.rxrate.legacy * 100,
sinfo.rxrate.mcs, sinfo.rxrate.nss);
sbuf_printf(s, " he_dcm %u he_gi %u he_ru_alloc %u eht_gi %u\n",
sinfo.rxrate.he_dcm, sinfo.rxrate.he_gi, sinfo.rxrate.he_ru_alloc,
sinfo.rxrate.eht_gi);
sbuf_printf(s, " txrate: flags %b bw %u(%s) legacy %u kbit/s mcs %u nss %u\n",
sinfo.txrate.flags, CFG80211_RATE_INFO_FLAGS_BITS,
sinfo.txrate.bw, lkpi_rate_info_bw_to_str(sinfo.txrate.bw),
sinfo.txrate.legacy * 100,
sinfo.txrate.mcs, sinfo.txrate.nss);
sbuf_printf(s, " he_dcm %u he_gi %u he_ru_alloc %u eht_gi %u\n",
sinfo.txrate.he_dcm, sinfo.txrate.he_gi, sinfo.txrate.he_ru_alloc,
sinfo.txrate.eht_gi);
if (!dump_queues)
continue;
/* Dump queue information. */
sbuf_printf(s, " Queue information:\n");
sbuf_printf(s, " frms direct tx %ju\n", lsta->frms_tx);
for (tid = 0; tid <= IEEE80211_NUM_TIDS; tid++) {
struct lkpi_txq *ltxq;
if (sta->txq[tid] == NULL) {
sbuf_printf(s, " tid %-2u NOQ\n", tid);
continue;
}
ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
#ifdef __notyet__
sbuf_printf(s, " tid %-2u flags: %b "
"txq_generation %u skbq len %d\n",
tid, ltxq->flags, LKPI_TXQ_FLAGS_BITS,
ltxq->txq_generation,
skb_queue_len_lockless(&ltxq->skbq));
#else
sbuf_printf(s, " tid %-2u "
"txq_generation %u skbq len %d\n",
tid,
ltxq->txq_generation,
skb_queue_len_lockless(&ltxq->skbq));
#endif
sbuf_printf(s, " frms_enqueued %ju frms_dequeued %ju "
"frms_tx %ju\n",
ltxq->frms_enqueued, ltxq->frms_dequeued, ltxq->frms_tx);
}
}
wiphy_unlock(hw->wiphy);
}
static int
lkpi_80211_dump_stas(SYSCTL_HANDLER_ARGS)
{
struct lkpi_vif *lvif;
struct sbuf s;
if (req->newptr)
return (EPERM);
lvif = (struct lkpi_vif *)arg1;
sbuf_new_for_sysctl(&s, NULL, 1024, req);
lkpi_80211_dump_lvif_stas(lvif, &s, false);
sbuf_finish(&s);
sbuf_delete(&s);
return (0);
}
static int
lkpi_80211_dump_sta_queues(SYSCTL_HANDLER_ARGS)
{
struct lkpi_vif *lvif;
struct sbuf s;
if (req->newptr)
return (EPERM);
lvif = (struct lkpi_vif *)arg1;
sbuf_new_for_sysctl(&s, NULL, 1024, req);
lkpi_80211_dump_lvif_stas(lvif, &s, true);
sbuf_finish(&s);
sbuf_delete(&s);
return (0);
}
static enum ieee80211_sta_rx_bandwidth
lkpi_cw_to_rx_bw(enum nl80211_chan_width cw)
{
switch (cw) {
case NL80211_CHAN_WIDTH_320:
return (IEEE80211_STA_RX_BW_320);
case NL80211_CHAN_WIDTH_160:
case NL80211_CHAN_WIDTH_80P80:
return (IEEE80211_STA_RX_BW_160);
case NL80211_CHAN_WIDTH_80:
return (IEEE80211_STA_RX_BW_80);
case NL80211_CHAN_WIDTH_40:
return (IEEE80211_STA_RX_BW_40);
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_20_NOHT:
return (IEEE80211_STA_RX_BW_20);
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
/* Unsupported input. */
return (IEEE80211_STA_RX_BW_20);
}
}
static enum nl80211_chan_width
lkpi_rx_bw_to_cw(enum ieee80211_sta_rx_bandwidth rx_bw)
{
switch (rx_bw) {
case IEEE80211_STA_RX_BW_20:
return (NL80211_CHAN_WIDTH_20); /* _NOHT */
case IEEE80211_STA_RX_BW_40:
return (NL80211_CHAN_WIDTH_40);
case IEEE80211_STA_RX_BW_80:
return (NL80211_CHAN_WIDTH_80);
case IEEE80211_STA_RX_BW_160:
return (NL80211_CHAN_WIDTH_160); /* 80P80 */
case IEEE80211_STA_RX_BW_320:
return (NL80211_CHAN_WIDTH_320);
}
}
static void
lkpi_sync_chanctx_cw_from_rx_bw(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, struct ieee80211_sta *sta)
{
struct ieee80211_chanctx_conf *chanctx_conf;
enum ieee80211_sta_rx_bandwidth old_bw;
uint32_t changed;
chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf,
lockdep_is_held(&hw->wiphy->mtx));
if (chanctx_conf == NULL)
return;
old_bw = lkpi_cw_to_rx_bw(chanctx_conf->def.width);
if (old_bw == sta->deflink.bandwidth)
return;
chanctx_conf->def.width = lkpi_rx_bw_to_cw(sta->deflink.bandwidth);
if (chanctx_conf->def.width == NL80211_CHAN_WIDTH_20 &&
!sta->deflink.ht_cap.ht_supported)
chanctx_conf->def.width = NL80211_CHAN_WIDTH_20_NOHT;
chanctx_conf->min_def = chanctx_conf->def;
vif->bss_conf.chanreq.oper.width = chanctx_conf->def.width;
changed = IEEE80211_CHANCTX_CHANGE_MIN_WIDTH;
changed |= IEEE80211_CHANCTX_CHANGE_WIDTH;
lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed);
}
#if defined(LKPI_80211_HT)
static void
lkpi_sta_sync_ht_from_ni(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct ieee80211_node *ni)
{
struct ieee80211vap *vap;
uint8_t *ie;
struct ieee80211_ht_cap *htcap;
struct ieee80211_sta_ht_cap *ht_cap, *sta_ht_cap;
enum nl80211_band band;
int i, rx_nss;
if ((ni->ni_flags & IEEE80211_NODE_HT) == 0) {
sta->deflink.ht_cap.ht_supported = false;
return;
}
sta->deflink.ht_cap.ht_supported = true;
/* htcap->ampdu_params_info */
vap = ni->ni_vap;
sta->deflink.ht_cap.ampdu_density = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
if (sta->deflink.ht_cap.ampdu_density > vap->iv_ampdu_density)
sta->deflink.ht_cap.ampdu_density = vap->iv_ampdu_density;
sta->deflink.ht_cap.ampdu_factor = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
if (sta->deflink.ht_cap.ampdu_factor > vap->iv_ampdu_rxmax)
sta->deflink.ht_cap.ampdu_factor = vap->iv_ampdu_rxmax;
ie = ni->ni_ies.htcap_ie;
KASSERT(ie != NULL, ("%s: HT but no htcap_ie on ni %p\n", __func__, ni));
if (ie[0] == IEEE80211_ELEMID_VENDOR)
ie += 4;
ie += 2;
htcap = (struct ieee80211_ht_cap *)ie;
sta->deflink.ht_cap.cap = htcap->cap_info;
sta->deflink.ht_cap.mcs = htcap->mcs;
/*
* 802.11n-2009 20.6 Parameters for HT MCSs gives the mandatory/
* optional MCS for Nss=1..4. We need to check the first four
* MCS sets from the Rx MCS Bitmask; then there is MCS 32 and
* MCS33.. is UEQM.
*/
band = vif->bss_conf.chanctx_conf->def.chan->band;
ht_cap = &hw->wiphy->bands[band]->ht_cap;
sta_ht_cap = &sta->deflink.ht_cap;
rx_nss = 0;
for (i = 0; i < 4; i++) {
TRACEOK("HT rx_mask[%d] sta %#04x & hw %#04x", i,
sta_ht_cap->mcs.rx_mask[i], ht_cap->mcs.rx_mask[i]);
sta_ht_cap->mcs.rx_mask[i] =
sta_ht_cap->mcs.rx_mask[i] & ht_cap->mcs.rx_mask[i];
/* XXX-BZ masking unequal modulation? */
if (sta_ht_cap->mcs.rx_mask[i] != 0)
rx_nss++;
}
if (rx_nss > 0) {
TRACEOK("HT rx_nss = max(%d, %d)", rx_nss, sta->deflink.rx_nss);
sta->deflink.rx_nss = MAX(rx_nss, sta->deflink.rx_nss);
} else {
sta->deflink.ht_cap.ht_supported = false;
return;
}
if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) != 0 &&
IEEE80211_IS_CHAN_HT40(ni->ni_chan))
sta->deflink.bandwidth = IEEE80211_STA_RX_BW_40;
else
sta->deflink.bandwidth = IEEE80211_STA_RX_BW_20;
IMPROVE("sta->wme");
if (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_MAX_AMSDU)
sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_7935;
else
sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_3839;
sta->deflink.agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA;
#ifdef __handled_by_driver__ /* iwlwifi only? actually unused? */
for (i = 0; i < nitems(sta.deflink.agg.max_tid_amsdu_len); i++) {
sta->deflink.agg.max_tid_amsdu_len[j] = ;
}
#endif
}
#endif
#if defined(LKPI_80211_VHT)
static void
lkpi_sta_sync_vht_from_ni(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct ieee80211_node *ni)
{
struct ieee80211_sta_vht_cap *vht_cap, *sta_vht_cap;;
enum ieee80211_sta_rx_bandwidth bw;
enum nl80211_band band;
uint32_t width;
int rx_nss;
uint16_t rx_map, tx_map;
if ((ni->ni_flags & IEEE80211_NODE_VHT) == 0 ||
!IEEE80211_IS_CHAN_VHT_5GHZ(ni->ni_chan)) {
sta->deflink.vht_cap.vht_supported = false;
return;
}
sta->deflink.vht_cap.vht_supported = true;
sta->deflink.vht_cap.cap = ni->ni_vhtcap;
sta->deflink.vht_cap.vht_mcs = ni->ni_vht_mcsinfo;
/*
* If VHT20/40 are selected do not update the bandwidth
* from HT but stya on VHT.
*/
if (ni->ni_vht_chanwidth == IEEE80211_VHT_CHANWIDTH_USE_HT)
goto skip_bw;
bw = sta->deflink.bandwidth;
width = (sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK);
switch (width) {
/* Deprecated. */
case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
bw = IEEE80211_STA_RX_BW_160;
break;
default:
/* Check if we do support 160Mhz somehow after all. */
if ((sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) != 0)
bw = IEEE80211_STA_RX_BW_160;
else
bw = IEEE80211_STA_RX_BW_80;
}
/*
* While we can set what is possibly supported we also need to be
* on a channel which supports that bandwidth; e.g., we can support
* VHT160 but the AP only does VHT80.
* Further ni_chan will also have filtered out what we disabled
* by configuration.
* Once net80211 channel selection is fixed for 802.11-2020 and
* VHT160 we can possibly spare ourselves the above.
*/
if (bw == IEEE80211_STA_RX_BW_160 &&
!IEEE80211_IS_CHAN_VHT160(ni->ni_chan) &&
!IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan))
bw = IEEE80211_STA_RX_BW_80;
if (bw == IEEE80211_STA_RX_BW_80 &&
!IEEE80211_IS_CHAN_VHT80(ni->ni_chan))
bw = sta->deflink.bandwidth;
sta->deflink.bandwidth = bw;
skip_bw:
band = vif->bss_conf.chanctx_conf->def.chan->band;
vht_cap = &hw->wiphy->bands[band]->vht_cap;
sta_vht_cap = &sta->deflink.vht_cap;
rx_nss = 0;
rx_map = tx_map = 0;
for (int i = 7; i >= 0; i--) {
uint8_t card, sta;
card = (vht_cap->vht_mcs.rx_mcs_map >> (2 * i)) & 0x3;
sta = (sta_vht_cap->vht_mcs.rx_mcs_map >> (2 * i)) & 0x3;
if (sta != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
if (card == IEEE80211_VHT_MCS_NOT_SUPPORTED)
sta = IEEE80211_VHT_MCS_NOT_SUPPORTED;
else {
sta = MIN(sta, card);
if (rx_nss == 0)
rx_nss = i + 1;
}
}
rx_map |= (sta << (2 * i));
card = (vht_cap->vht_mcs.tx_mcs_map >> (2 * i)) & 0x3;
sta = (sta_vht_cap->vht_mcs.tx_mcs_map >> (2 * i)) & 0x3;
if (sta != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
if (card == IEEE80211_VHT_MCS_NOT_SUPPORTED)
sta = IEEE80211_VHT_MCS_NOT_SUPPORTED;
else
sta = MIN(sta, card);
}
tx_map |= (sta << (2 * i));
}
TRACEOK("VHT rx_mcs_map %#010x->%#010x, tx_mcs_map %#010x->%#010x, rx_nss = %d",
sta_vht_cap->vht_mcs.rx_mcs_map, rx_map,
sta_vht_cap->vht_mcs.tx_mcs_map, tx_map, rx_nss);
sta_vht_cap->vht_mcs.rx_mcs_map = rx_map;
sta_vht_cap->vht_mcs.tx_mcs_map = tx_map;
if (rx_nss > 0) {
TRACEOK("VHT rx_nss = max(%d, %d)", rx_nss, sta->deflink.rx_nss);
sta->deflink.rx_nss = MAX(rx_nss, sta->deflink.rx_nss);
} else {
sta->deflink.vht_cap.vht_supported = false;
return;
}
switch (sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_11454;
break;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_7991;
break;
case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895:
default:
sta->deflink.agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_VHT_3895;
break;
}
}
#endif
static void
lkpi_sta_sync_from_ni(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct ieee80211_node *ni, bool updchnctx)
{
/*
* Ensure rx_nss is at least 1 as otherwise drivers run into
* unexpected problems.
*/
sta->deflink.rx_nss = 1;
#if defined(LKPI_80211_HT)
lkpi_sta_sync_ht_from_ni(hw, vif, sta, ni);
#endif
#if defined(LKPI_80211_VHT)
lkpi_sta_sync_vht_from_ni(hw, vif, sta, ni);
#endif
/*
* We are also called from node allocation which net80211
* can do even on `ifconfig down`; in that case the chanctx
* may still be valid and we get a discrepancy between
* sta and chanctx. Thus do not try to update the chanctx
* when called from lkpi_lsta_alloc().
*/
if (updchnctx)
lkpi_sync_chanctx_cw_from_rx_bw(hw, vif, sta);
}
static uint8_t
lkpi_get_max_rx_chains(struct ieee80211_node *ni)
{
uint8_t chains;
#if defined(LKPI_80211_HT) || defined(LKPI_80211_VHT)
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
lsta = ni->ni_drv_data;
sta = LSTA_TO_STA(lsta);
#endif
chains = 1;
#if defined(LKPI_80211_HT)
IMPROVE("We should factor counting MCS/NSS out for sync and here");
if (sta->deflink.ht_cap.ht_supported)
chains = MAX(chains, sta->deflink.rx_nss);
#endif
#if defined(LKPI_80211_VHT)
if (sta->deflink.vht_cap.vht_supported)
chains = MAX(chains, sta->deflink.rx_nss);
#endif
return (chains);
}
static void
lkpi_lsta_dump(struct lkpi_sta *lsta, struct ieee80211_node *ni,
const char *_f, int _l)
{
#ifdef LINUXKPI_DEBUG_80211
if ((linuxkpi_debug_80211 & D80211_TRACE_STA) == 0)
return;
if (lsta == NULL)
return;
printf("%s:%d lsta %p ni %p sta %p\n",
_f, _l, lsta, ni, &lsta->sta);
if (ni != NULL)
ieee80211_dump_node(NULL, ni);
printf("\ttxq_task txq len %d mtx\n", mbufq_len(&lsta->txq));
printf("\tkc %p state %d added_to_drv %d in_mgd %d\n",
&lsta->kc[0], lsta->state, lsta->added_to_drv, lsta->in_mgd);
#endif
}
static void
lkpi_lsta_remove(struct lkpi_sta *lsta, struct lkpi_vif *lvif)
{
lockdep_assert_wiphy(lsta->hw->wiphy);
KASSERT(!list_empty(&lsta->lsta_list),
("%s: lsta %p ni %p\n", __func__, lsta, lsta->ni));
list_del_init(&lsta->lsta_list);
}
static struct lkpi_sta *
lkpi_lsta_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN],
struct ieee80211_hw *hw, struct ieee80211_node *ni)
{
struct lkpi_sta *lsta;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_sta *sta;
int band, i, tid;
lsta = malloc(sizeof(*lsta) + hw->sta_data_size, M_LKPI80211,
M_NOWAIT | M_ZERO);
if (lsta == NULL)
return (NULL);
lsta->hw = hw;
lsta->added_to_drv = false;
lsta->state = IEEE80211_STA_NOTEXIST;
/*
* Link the ni to the lsta here without taking a reference.
* For one we would have to take the reference in node_init()
* as ieee80211_alloc_node() will initialise the refcount after us.
* For the other a ni and an lsta are 1:1 mapped and always together
* from [ic_]node_alloc() to [ic_]node_free() so we are essentally
* using the ni references for the lsta as well despite it being
* two separate allocations.
*/
lsta->ni = ni;
/* The back-pointer "drv_data" to net80211_node let's us get lsta. */
ni->ni_drv_data = lsta;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
sta = LSTA_TO_STA(lsta);
IEEE80211_ADDR_COPY(sta->addr, mac);
/* TXQ */
for (tid = 0; tid < nitems(sta->txq); tid++) {
struct lkpi_txq *ltxq;
/* We are not limiting ourselves to hw.queues here. */
ltxq = malloc(sizeof(*ltxq) + hw->txq_data_size,
M_LKPI80211, M_NOWAIT | M_ZERO);
if (ltxq == NULL)
goto cleanup;
/* iwlwifi//mvm/sta.c::tid_to_mac80211_ac[] */
if (tid == IEEE80211_NUM_TIDS) {
if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ)) {
free(ltxq, M_LKPI80211);
continue;
}
IMPROVE("AP/if we support non-STA here too");
ltxq->txq.ac = IEEE80211_AC_VO;
} else {
ltxq->txq.ac = ieee80211e_up_to_ac[tid & 7];
}
ltxq->seen_dequeue = false;
ltxq->stopped = false;
ltxq->txq.vif = vif;
ltxq->txq.tid = tid;
ltxq->txq.sta = sta;
TAILQ_ELEM_INIT(ltxq, txq_entry);
skb_queue_head_init(&ltxq->skbq);
LKPI_80211_LTXQ_LOCK_INIT(ltxq);
sta->txq[tid] = &ltxq->txq;
}
/* Deflink information. */
for (band = 0; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *supband;
uint32_t rate_mandatory;;
supband = hw->wiphy->bands[band];
if (supband == NULL)
continue;
switch (band) {
case NL80211_BAND_2GHZ:
/* We have to assume 11g support here. */
rate_mandatory = IEEE80211_RATE_MANDATORY_G |
IEEE80211_RATE_MANDATORY_B;
break;
case NL80211_BAND_5GHZ:
rate_mandatory = IEEE80211_RATE_MANDATORY_A;
break;
default:
continue;
}
for (i = 0; i < supband->n_bitrates; i++) {
if ((supband->bitrates[i].flags & rate_mandatory) != 0)
sta->deflink.supp_rates[band] |= BIT(i);
}
}
sta->deflink.smps_mode = IEEE80211_SMPS_OFF;
sta->deflink.bandwidth = IEEE80211_STA_RX_BW_20;
sta->deflink.agg.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA;
sta->deflink.rx_nss = 1;
sta->deflink.sta = sta;
lkpi_sta_sync_from_ni(hw, vif, sta, ni, false);
IMPROVE("he, eht, bw_320, ... smps_mode, ..");
/* Link configuration. */
IEEE80211_ADDR_COPY(sta->deflink.addr, sta->addr);
sta->link[0] = &sta->deflink;
for (i = 1; i < nitems(sta->link); i++) {
IMPROVE("more links; only link[0] = deflink currently.");
}
IMPROVE("11be");
sta->mlo = false;
/* Deferred TX path. */
LKPI_80211_LSTA_TXQ_LOCK_INIT(lsta);
TASK_INIT(&lsta->txq_task, 0, lkpi_80211_txq_task, lsta);
mbufq_init(&lsta->txq, 32 * NAPI_POLL_WEIGHT);
lsta->txq_ready = true;
return (lsta);
cleanup:
for (; tid >= 0; tid--) {
struct lkpi_txq *ltxq;
ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
LKPI_80211_LTXQ_LOCK_DESTROY(ltxq);
free(sta->txq[tid], M_LKPI80211);
}
free(lsta, M_LKPI80211);
return (NULL);
}
static void
lkpi_lsta_free(struct lkpi_sta *lsta, struct ieee80211_node *ni)
{
struct mbuf *m;
if (lsta->added_to_drv)
panic("%s: Trying to free an lsta still known to firmware: "
"lsta %p ni %p added_to_drv %d\n",
__func__, lsta, ni, lsta->added_to_drv);
/* XXX-BZ free resources, ... */
IMPROVE();
/* Drain sta->txq[] */
LKPI_80211_LSTA_TXQ_LOCK(lsta);
lsta->txq_ready = false;
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
/* Drain taskq, won't be restarted until added_to_drv is set again. */
while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0)
taskqueue_drain(taskqueue_thread, &lsta->txq_task);
/* Flush mbufq (make sure to release ni refs!). */
m = mbufq_dequeue(&lsta->txq);
while (m != NULL) {
struct ieee80211_node *nim;
nim = (struct ieee80211_node *)m->m_pkthdr.rcvif;
if (nim != NULL)
ieee80211_free_node(nim);
m_freem(m);
m = mbufq_dequeue(&lsta->txq);
}
KASSERT(mbufq_empty(&lsta->txq), ("%s: lsta %p has txq len %d != 0\n",
__func__, lsta, mbufq_len(&lsta->txq)));
LKPI_80211_LSTA_TXQ_LOCK_DESTROY(lsta);
/* Remove lsta from vif; that is done by the state machine. Should assert it? */
IMPROVE("Make sure everything is cleaned up.");
/* Free lsta. */
lsta->ni = NULL;
ni->ni_drv_data = NULL;
free(lsta, M_LKPI80211);
}
static enum nl80211_band
lkpi_net80211_chan_to_nl80211_band(struct ieee80211_channel *c)
{
if (IEEE80211_IS_CHAN_2GHZ(c))
return (NL80211_BAND_2GHZ);
else if (IEEE80211_IS_CHAN_5GHZ(c))
return (NL80211_BAND_5GHZ);
#ifdef __notyet__
else if ()
return (NL80211_BAND_6GHZ);
else if ()
return (NL80211_BAND_60GHZ);
else if (IEEE80211_IS_CHAN_GSM(c))
return (NL80211_BAND_XXX);
#endif
else
panic("%s: unsupported band. c %p flags %#x\n",
__func__, c, c->ic_flags);
}
static uint32_t
lkpi_nl80211_band_to_net80211_band(enum nl80211_band band)
{
/* XXX-BZ this is just silly; net80211 is too convoluted. */
/* IEEE80211_CHAN_A / _G / .. doesn't really work either. */
switch (band) {
case NL80211_BAND_2GHZ:
return (IEEE80211_CHAN_2GHZ);
break;
case NL80211_BAND_5GHZ:
return (IEEE80211_CHAN_5GHZ);
break;
case NL80211_BAND_60GHZ:
break;
case NL80211_BAND_6GHZ:
break;
default:
panic("%s: unsupported band %u\n", __func__, band);
break;
}
IMPROVE();
return (0x00);
}
#ifdef LINUXKPI_DEBUG_80211
static const char *
lkpi_nl80211_band_name(enum nl80211_band band)
{
switch (band) {
case NL80211_BAND_2GHZ:
return "2Ghz";
break;
case NL80211_BAND_5GHZ:
return "5Ghz";
break;
case NL80211_BAND_60GHZ:
return "60Ghz";
break;
case NL80211_BAND_6GHZ:
return "6Ghz";
break;
default:
panic("%s: unsupported band %u\n", __func__, band);
break;
}
}
#endif
#if 0
static enum ieee80211_ac_numbers
lkpi_ac_net_to_l80211(int ac)
{
switch (ac) {
case WME_AC_VO:
return (IEEE80211_AC_VO);
case WME_AC_VI:
return (IEEE80211_AC_VI);
case WME_AC_BE:
return (IEEE80211_AC_BE);
case WME_AC_BK:
return (IEEE80211_AC_BK);
default:
printf("%s: invalid WME_AC_* input: ac = %d\n", __func__, ac);
return (IEEE80211_AC_BE);
}
}
#endif
static enum nl80211_iftype
lkpi_opmode_to_vif_type(enum ieee80211_opmode opmode)
{
switch (opmode) {
case IEEE80211_M_IBSS:
return (NL80211_IFTYPE_ADHOC);
break;
case IEEE80211_M_STA:
return (NL80211_IFTYPE_STATION);
break;
case IEEE80211_M_WDS:
return (NL80211_IFTYPE_WDS);
break;
case IEEE80211_M_HOSTAP:
return (NL80211_IFTYPE_AP);
break;
case IEEE80211_M_MONITOR:
return (NL80211_IFTYPE_MONITOR);
break;
case IEEE80211_M_MBSS:
return (NL80211_IFTYPE_MESH_POINT);
break;
case IEEE80211_M_AHDEMO:
/* FALLTHROUGH */
default:
printf("ERROR: %s: unsupported opmode %d\n", __func__, opmode);
/* FALLTHROUGH */
}
return (NL80211_IFTYPE_UNSPECIFIED);
}
#ifdef LKPI_80211_HW_CRYPTO
static const char *
lkpi_cipher_suite_to_name(uint32_t wlan_cipher_suite)
{
switch (wlan_cipher_suite) {
case WLAN_CIPHER_SUITE_WEP40:
return ("WEP40");
case WLAN_CIPHER_SUITE_WEP104:
return ("WEP104");
case WLAN_CIPHER_SUITE_TKIP:
return ("TKIP");
case WLAN_CIPHER_SUITE_CCMP:
return ("CCMP");
case WLAN_CIPHER_SUITE_CCMP_256:
return ("CCMP_256");
case WLAN_CIPHER_SUITE_GCMP:
return ("GCMP");
case WLAN_CIPHER_SUITE_GCMP_256:
return ("GCMP_256");
case WLAN_CIPHER_SUITE_AES_CMAC:
return ("AES_CMAC");
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
return ("BIP_CMAC_256");
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
return ("BIP_GMAC_128");
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
return ("BIP_GMAC_256");
default:
return ("??");
}
}
static uint32_t
lkpi_l80211_to_net80211_cyphers(struct ieee80211com *ic,
uint32_t wlan_cipher_suite)
{
switch (wlan_cipher_suite) {
case WLAN_CIPHER_SUITE_WEP40:
return (IEEE80211_CRYPTO_WEP);
case WLAN_CIPHER_SUITE_WEP104:
return (IEEE80211_CRYPTO_WEP);
case WLAN_CIPHER_SUITE_TKIP:
return (IEEE80211_CRYPTO_TKIP);
case WLAN_CIPHER_SUITE_CCMP:
return (IEEE80211_CRYPTO_AES_CCM);
case WLAN_CIPHER_SUITE_CCMP_256:
return (IEEE80211_CRYPTO_AES_CCM_256);
case WLAN_CIPHER_SUITE_GCMP:
return (IEEE80211_CRYPTO_AES_GCM_128);
case WLAN_CIPHER_SUITE_GCMP_256:
return (IEEE80211_CRYPTO_AES_GCM_256);
case WLAN_CIPHER_SUITE_AES_CMAC:
return (IEEE80211_CRYPTO_BIP_CMAC_128);
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
return (IEEE80211_CRYPTO_BIP_CMAC_256);
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
return (IEEE80211_CRYPTO_BIP_GMAC_128);
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
return (IEEE80211_CRYPTO_BIP_GMAC_256);
default:
ic_printf(ic, "%s: unknown WLAN Cipher Suite %#08x | %u (%s)\n",
__func__,
wlan_cipher_suite >> 8, wlan_cipher_suite & 0xff,
lkpi_cipher_suite_to_name(wlan_cipher_suite));
return (0);
}
}
static uint32_t
lkpi_net80211_to_l80211_cipher_suite(uint32_t cipher, uint8_t keylen)
{
switch (cipher) {
case IEEE80211_CIPHER_WEP:
if (keylen == (40/NBBY))
return (WLAN_CIPHER_SUITE_WEP40);
else if (keylen == (104/NBBY))
return (WLAN_CIPHER_SUITE_WEP104);
else {
printf("%s: WEP with unsupported keylen %d\n",
__func__, keylen * NBBY);
return (0);
}
break;
case IEEE80211_CIPHER_TKIP:
return (WLAN_CIPHER_SUITE_TKIP);
case IEEE80211_CIPHER_AES_CCM:
return (WLAN_CIPHER_SUITE_CCMP);
case IEEE80211_CIPHER_AES_CCM_256:
return (WLAN_CIPHER_SUITE_CCMP_256);
case IEEE80211_CIPHER_AES_GCM_128:
return (WLAN_CIPHER_SUITE_GCMP);
case IEEE80211_CIPHER_AES_GCM_256:
return (WLAN_CIPHER_SUITE_GCMP_256);
case IEEE80211_CIPHER_BIP_CMAC_128:
return (WLAN_CIPHER_SUITE_AES_CMAC);
case IEEE80211_CIPHER_BIP_CMAC_256:
return (WLAN_CIPHER_SUITE_BIP_CMAC_256);
case IEEE80211_CIPHER_BIP_GMAC_128:
return (WLAN_CIPHER_SUITE_BIP_GMAC_128);
case IEEE80211_CIPHER_BIP_GMAC_256:
return (WLAN_CIPHER_SUITE_BIP_GMAC_256);
case IEEE80211_CIPHER_AES_OCB:
case IEEE80211_CIPHER_TKIPMIC:
/*
* TKIP w/ hw MIC support
* (gone wrong; should really be a crypto flag in net80211).
*/
case IEEE80211_CIPHER_CKIP:
case IEEE80211_CIPHER_NONE:
printf("%s: unsupported cipher %#010x\n", __func__, cipher);
break;
default:
printf("%s: unknown cipher %#010x\n", __func__, cipher);
};
return (0);
}
#endif
#ifdef __notyet__
static enum ieee80211_sta_state
lkpi_net80211_state_to_sta_state(enum ieee80211_state state)
{
/*
* XXX-BZ The net80211 states are "try to ..", the lkpi8011 states are
* "done". Also ASSOC/AUTHORIZED are both "RUN" then?
*/
switch (state) {
case IEEE80211_S_INIT:
return (IEEE80211_STA_NOTEXIST);
case IEEE80211_S_SCAN:
return (IEEE80211_STA_NONE);
case IEEE80211_S_AUTH:
return (IEEE80211_STA_AUTH);
case IEEE80211_S_ASSOC:
return (IEEE80211_STA_ASSOC);
case IEEE80211_S_RUN:
return (IEEE80211_STA_AUTHORIZED);
case IEEE80211_S_CAC:
case IEEE80211_S_CSA:
case IEEE80211_S_SLEEP:
default:
UNIMPLEMENTED;
};
return (IEEE80211_STA_NOTEXIST);
}
#endif
static struct linuxkpi_ieee80211_channel *
lkpi_find_lkpi80211_chan(struct lkpi_hw *lhw,
struct ieee80211_channel *c)
{
struct ieee80211_hw *hw;
struct linuxkpi_ieee80211_channel *channels;
enum nl80211_band band;
int i, nchans;
hw = LHW_TO_HW(lhw);
band = lkpi_net80211_chan_to_nl80211_band(c);
if (hw->wiphy->bands[band] == NULL)
return (NULL);
nchans = hw->wiphy->bands[band]->n_channels;
if (nchans <= 0)
return (NULL);
channels = hw->wiphy->bands[band]->channels;
for (i = 0; i < nchans; i++) {
if (channels[i].center_freq == c->ic_freq)
return (&channels[i]);
}
return (NULL);
}
#if 0
static struct linuxkpi_ieee80211_channel *
lkpi_get_lkpi80211_chan(struct ieee80211com *ic, struct ieee80211_node *ni)
{
struct linuxkpi_ieee80211_channel *chan;
struct ieee80211_channel *c;
struct lkpi_hw *lhw;
chan = NULL;
if (ni != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC)
c = ni->ni_chan;
else if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
c = ic->ic_bsschan;
else if (ic->ic_curchan != IEEE80211_CHAN_ANYC)
c = ic->ic_curchan;
else
c = NULL;
if (c != NULL && c != IEEE80211_CHAN_ANYC) {
lhw = ic->ic_softc;
chan = lkpi_find_lkpi80211_chan(lhw, c);
}
return (chan);
}
#endif
struct linuxkpi_ieee80211_channel *
linuxkpi_ieee80211_get_channel(struct wiphy *wiphy, uint32_t freq)
{
enum nl80211_band band;
for (band = 0; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *supband;
struct linuxkpi_ieee80211_channel *channels;
int i;
supband = wiphy->bands[band];
if (supband == NULL || supband->n_channels == 0)
continue;
channels = supband->channels;
for (i = 0; i < supband->n_channels; i++) {
if (channels[i].center_freq == freq)
return (&channels[i]);
}
}
return (NULL);
}
#ifdef LKPI_80211_HW_CRYPTO
static int
lkpi_sta_del_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct lkpi_sta *lsta)
{
int error;
if (!lkpi_hwcrypto)
return (0);
lockdep_assert_wiphy(hw->wiphy);
ieee80211_ref_node(lsta->ni);
error = 0;
for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc); keyix++) {
struct ieee80211_key_conf *kc;
int err;
if (lsta->kc[keyix] == NULL)
continue;
kc = lsta->kc[keyix];
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(lsta->ni->ni_ic, "%d %lu %s: running set_key cmd %d(%s) for "
"sta %6D: keyidx %u hw_key_idx %u flags %b\n",
curthread->td_tid, jiffies, __func__,
DISABLE_KEY, "DISABLE", lsta->sta.addr, ":",
kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
#endif
err = lkpi_80211_mo_set_key(hw, DISABLE_KEY, vif,
LSTA_TO_STA(lsta), kc);
if (err != 0) {
ic_printf(lsta->ni->ni_ic, "%d %lu %s: set_key cmd %d(%s) for "
"sta %6D failed: %d\n", curthread->td_tid, jiffies, __func__,
DISABLE_KEY, "DISABLE", lsta->sta.addr, ":", err);
error++;
/*
* If we free the key here we will never be able to get it
* removed from the driver/fw which will likely make us
* crash (firmware).
*/
continue;
}
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(lsta->ni->ni_ic, "%d %lu %s: set_key cmd %d(%s) for "
"sta %6D succeeded: keyidx %u hw_key_idx %u flags %b\n",
curthread->td_tid, jiffies, __func__,
DISABLE_KEY, "DISABLE", lsta->sta.addr, ":",
kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
#endif
lsta->kc[keyix] = NULL;
free(kc, M_LKPI80211);
}
ieee80211_free_node(lsta->ni);
return (error);
}
/* XXX-BZ one day we should replace this iterating over VIFs, or node list? */
/* See also lkpi_sta_del_keys() these days. */
static int
lkpi_iv_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct lkpi_sta *lsta;
struct ieee80211_vif *vif;
struct ieee80211_sta *sta;
struct ieee80211_node *ni;
struct ieee80211_key_conf *kc;
int error;
ic = vap->iv_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
/*
* Make sure we do not make it here without going through
* lkpi_iv_key_update_begin() first.
*/
lockdep_assert_wiphy(hw->wiphy);
/*
* While we are assoc we may still send packets. We cannot delete the
* keys as otherwise packets could go out unencrypted. Some firmware
* does not like this and will fire an assert.
* net80211 needs to drive this better but given we want the disassoc
* frame out and have to unlock we are open to a race currently.
* This check should prevent problems.
* How to test: run 800Mbit/s UDP traffic and during that restart your
* supplicant. You want to survive that.
*/
if (vif->cfg.assoc) {
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: vif still assoc; not deleting keys\n",
curthread->td_tid, jiffies, __func__);
return (0);
}
if (IEEE80211_KEY_UNDEFINED(k)) {
ic_printf(ic, "%s: vap %p key %p is undefined: %p %u\n",
__func__, vap, k, k->wk_cipher, k->wk_keyix);
return (0);
}
if (vap->iv_bss == NULL) {
ic_printf(ic, "%s: iv_bss %p for vap %p is NULL\n",
__func__, vap->iv_bss, vap);
return (0);
}
ni = ieee80211_ref_node(vap->iv_bss);
lsta = ni->ni_drv_data;
if (lsta == NULL) {
ic_printf(ic, "%s: ni %p (%6D) with lsta NULL\n",
__func__, ni, ni->ni_bssid, ":");
ieee80211_free_node(ni);
return (0);
}
sta = LSTA_TO_STA(lsta);
if (lsta->kc[k->wk_keyix] == NULL) {
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: sta %6D and no key information, "
"keyidx %u wk_macaddr %6D; returning success\n",
curthread->td_tid, jiffies, __func__, sta->addr, ":",
k->wk_keyix, k->wk_macaddr, ":");
#endif
ieee80211_free_node(ni);
return (1);
}
kc = lsta->kc[k->wk_keyix];
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: running set_key cmd %d(%s) for sta %6D: "
"keyidx %u hw_key_idx %u flags %b\n",
curthread->td_tid, jiffies, __func__,
DISABLE_KEY, "DISABLE", sta->addr, ":",
kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
#endif
error = lkpi_80211_mo_set_key(hw, DISABLE_KEY, vif, sta, kc);
if (error != 0) {
ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D failed: %d\n",
curthread->td_tid, jiffies, __func__,
DISABLE_KEY, "DISABLE", sta->addr, ":", error);
error = 0;
goto out;
}
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D succeeded: "
"keyidx %u hw_key_idx %u flags %b\n",
curthread->td_tid, jiffies, __func__,
DISABLE_KEY, "DISABLE", sta->addr, ":",
kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
#endif
lsta->kc[k->wk_keyix] = NULL;
free(kc, M_LKPI80211);
error = 1;
out:
ieee80211_free_node(ni);
return (error);
}
static int
lkpi_iv_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct lkpi_sta *lsta;
struct ieee80211_vif *vif;
struct ieee80211_sta *sta;
struct ieee80211_node *ni;
struct ieee80211_key_conf *kc;
uint32_t lcipher;
uint16_t exp_flags;
uint8_t keylen;
int error;
ic = vap->iv_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
/*
* Make sure we do not make it here without going through
* lkpi_iv_key_update_begin() first.
*/
lockdep_assert_wiphy(hw->wiphy);
if (IEEE80211_KEY_UNDEFINED(k)) {
ic_printf(ic, "%s: vap %p key %p is undefined: %p %u\n",
__func__, vap, k, k->wk_cipher, k->wk_keyix);
return (0);
}
if (vap->iv_bss == NULL) {
ic_printf(ic, "%s: iv_bss %p for vap %p is NULL\n",
__func__, vap->iv_bss, vap);
return (0);
}
ni = ieee80211_ref_node(vap->iv_bss);
lsta = ni->ni_drv_data;
if (lsta == NULL) {
ic_printf(ic, "%s: ni %p (%6D) with lsta NULL\n",
__func__, ni, ni->ni_bssid, ":");
ieee80211_free_node(ni);
return (0);
}
sta = LSTA_TO_STA(lsta);
keylen = k->wk_keylen;
lcipher = lkpi_net80211_to_l80211_cipher_suite(
k->wk_cipher->ic_cipher, k->wk_keylen);
switch (lcipher) {
case WLAN_CIPHER_SUITE_TKIP:
keylen += 2 * k->wk_cipher->ic_miclen;
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
break;
default:
ic_printf(ic, "%s: CIPHER SUITE %#x (%s) not supported\n",
__func__, lcipher, lkpi_cipher_suite_to_name(lcipher));
IMPROVE();
ieee80211_free_node(ni);
return (0);
}
if (lsta->kc[k->wk_keyix] != NULL) {
IMPROVE("Still in firmware? Del first. Can we assert this cannot happen?");
ic_printf(ic, "%s: sta %6D found with key information\n",
__func__, sta->addr, ":");
kc = lsta->kc[k->wk_keyix];
lsta->kc[k->wk_keyix] = NULL;
free(kc, M_LKPI80211);
kc = NULL; /* safeguard */
}
kc = malloc(sizeof(*kc) + keylen, M_LKPI80211, M_WAITOK | M_ZERO);
kc->_k = k; /* Save the pointer to net80211. */
kc->cipher = lcipher;
kc->keyidx = k->wk_keyix;
#if 0
kc->hw_key_idx = /* set by hw and needs to be passed for TX */;
#endif
atomic64_set(&kc->tx_pn, k->wk_keytsc);
kc->keylen = k->wk_keylen;
memcpy(kc->key, k->wk_key, k->wk_keylen);
if (k->wk_flags & (IEEE80211_KEY_XMIT | IEEE80211_KEY_RECV))
kc->flags |= IEEE80211_KEY_FLAG_PAIRWISE;
if (k->wk_flags & IEEE80211_KEY_GROUP)
kc->flags &= ~IEEE80211_KEY_FLAG_PAIRWISE;
kc->iv_len = k->wk_cipher->ic_header;
kc->icv_len = k->wk_cipher->ic_trailer;
switch (kc->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
memcpy(kc->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY, k->wk_txmic, k->wk_cipher->ic_miclen);
memcpy(kc->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, k->wk_rxmic, k->wk_cipher->ic_miclen);
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
break;
default:
/* currently UNREACH */
IMPROVE();
break;
};
lsta->kc[k->wk_keyix] = kc;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: running set_key cmd %d(%s) for sta %6D: "
"kc %p keyidx %u hw_key_idx %u keylen %u flags %b\n",
curthread->td_tid, jiffies, __func__,
SET_KEY, "SET", sta->addr, ":", kc, kc->keyidx, kc->hw_key_idx,
kc->keylen, kc->flags, IEEE80211_KEY_FLAG_BITS);
#endif
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
error = lkpi_80211_mo_set_key(hw, SET_KEY, vif, sta, kc);
if (error != 0) {
ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D failed: %d\n",
curthread->td_tid, jiffies, __func__,
SET_KEY, "SET", sta->addr, ":", error);
lsta->kc[k->wk_keyix] = NULL;
free(kc, M_LKPI80211);
ieee80211_free_node(ni);
return (0);
}
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: set_key cmd %d(%s) for sta %6D succeeded: "
"kc %p keyidx %u hw_key_idx %u flags %b\n",
curthread->td_tid, jiffies, __func__,
SET_KEY, "SET", sta->addr, ":",
kc, kc->keyidx, kc->hw_key_idx, kc->flags, IEEE80211_KEY_FLAG_BITS);
#endif
exp_flags = 0;
switch (kc->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
exp_flags = (IEEE80211_KEY_FLAG_PAIRWISE |
IEEE80211_KEY_FLAG_PUT_IV_SPACE |
IEEE80211_KEY_FLAG_GENERATE_MMIC |
IEEE80211_KEY_FLAG_PUT_MIC_SPACE);
#define TKIP_INVAL_COMBINATION \
(IEEE80211_KEY_FLAG_PUT_MIC_SPACE|IEEE80211_KEY_FLAG_GENERATE_MMIC)
if ((kc->flags & TKIP_INVAL_COMBINATION) == TKIP_INVAL_COMBINATION) {
ic_printf(ic, "%s: SET_KEY for %s returned invalid "
"combination %b\n", __func__,
lkpi_cipher_suite_to_name(kc->cipher),
kc->flags, IEEE80211_KEY_FLAG_BITS);
}
#undef TKIP_INVAL_COMBINATION
#ifdef __notyet__
/* Do flags surgery; special see linuxkpi_ieee80211_ifattach(). */
if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) != 0) {
k->wk_flags &= ~(IEEE80211_KEY_NOMICMGT|IEEE80211_KEY_NOMIC);
k->wk_flags |= IEEE80211_KEY_SWMIC;
ic->ic_cryptocaps &= ~IEEE80211_CRYPTO_TKIPMIC
}
#endif
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
exp_flags = (IEEE80211_KEY_FLAG_PAIRWISE |
IEEE80211_KEY_FLAG_PUT_IV_SPACE |
IEEE80211_KEY_FLAG_GENERATE_IV |
IEEE80211_KEY_FLAG_GENERATE_IV_MGMT | /* Only needs IV geeration for MGMT frames. */
IEEE80211_KEY_FLAG_SW_MGMT_TX); /* MFP in software */
break;
}
if ((kc->flags & ~exp_flags) != 0)
ic_printf(ic, "%s: SET_KEY for %s returned unexpected key flags: "
" %#06x & ~%#06x = %b\n", __func__,
lkpi_cipher_suite_to_name(kc->cipher), kc->flags, exp_flags,
(kc->flags & ~exp_flags), IEEE80211_KEY_FLAG_BITS);
#ifdef __notyet__
/* Do flags surgery. */
if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV_MGMT) == 0)
k->wk_flags |= IEEE80211_KEY_NOIVMGT;
if ((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0)
k->wk_flags |= IEEE80211_KEY_NOIV;
#endif
ieee80211_free_node(ni);
return (1);
}
static void
lkpi_iv_key_update_begin(struct ieee80211vap *vap)
{
struct ieee80211_node_table *nt;
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_node *ni;
bool icislocked, ntislocked;
ic = vap->iv_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
nt = &ic->ic_sta;
icislocked = IEEE80211_IS_LOCKED(ic);
ntislocked = IEEE80211_NODE_IS_LOCKED(nt);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: vap %p ic %p %slocked nt %p %slocked "
"lvif ic_unlocked %d nt_unlocked %d\n",
curthread->td_tid, jiffies, __func__, vap,
ic, icislocked ? "" : "un", nt, ntislocked ? "" : "un",
lvif->ic_unlocked, lvif->nt_unlocked);
#endif
/*
* This is inconsistent net80211 locking to be fixed one day.
*/
/* Try to make sure the node does not go away while possibly unlocked. */
ni = NULL;
if (icislocked || ntislocked) {
if (vap->iv_bss != NULL)
ni = ieee80211_ref_node(vap->iv_bss);
}
if (icislocked)
IEEE80211_UNLOCK(ic);
if (ntislocked)
IEEE80211_NODE_UNLOCK(nt);
wiphy_lock(hw->wiphy);
KASSERT(lvif->key_update_iv_bss == NULL, ("%s: key_update_iv_bss not NULL %p",
__func__, lvif->key_update_iv_bss));
lvif->key_update_iv_bss = ni;
/*
* ic/nt_unlocked could be a bool given we are under the lock and there
* must only be a single thread.
* In case anything in the future disturbs the order the refcnt will
* help us catching problems a lot easier.
*/
if (icislocked)
refcount_acquire(&lvif->ic_unlocked);
if (ntislocked)
refcount_acquire(&lvif->nt_unlocked);
/*
* Stop the queues while doing key updates.
*/
ieee80211_stop_queues(hw);
}
static void
lkpi_iv_key_update_end(struct ieee80211vap *vap)
{
struct ieee80211_node_table *nt;
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
bool icislocked, ntislocked;
ic = vap->iv_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
nt = &ic->ic_sta;
/*
* Re-enabled the queues after the key update.
*/
lkpi_ieee80211_wake_queues_locked(hw);
icislocked = IEEE80211_IS_LOCKED(ic);
MPASS(!icislocked);
ntislocked = IEEE80211_NODE_IS_LOCKED(nt);
MPASS(!ntislocked);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_HW_CRYPTO)
ic_printf(ic, "%d %lu %s: vap %p ic %p %slocked nt %p %slocked "
"lvif ic_unlocked %d nt_unlocked %d\n",
curthread->td_tid, jiffies, __func__, vap,
ic, icislocked ? "" : "un", nt, ntislocked ? "" : "un",
lvif->ic_unlocked, lvif->nt_unlocked);
#endif
/*
* Check under lock; see comment in lkpi_iv_key_update_begin().
* In case the refcnt gets out of sync locking in net80211 will
* quickly barf as well (trying to unlock a lock not held).
*/
icislocked = refcount_release_if_last(&lvif->ic_unlocked);
ntislocked = refcount_release_if_last(&lvif->nt_unlocked);
if (lvif->key_update_iv_bss != NULL) {
ieee80211_free_node(lvif->key_update_iv_bss);
lvif->key_update_iv_bss = NULL;
}
wiphy_unlock(hw->wiphy);
/*
* This is inconsistent net80211 locking to be fixed one day.
* ic before nt to avoid a LOR.
*/
if (icislocked)
IEEE80211_LOCK(ic);
if (ntislocked)
IEEE80211_NODE_LOCK(nt);
}
#endif
static void
lkpi_cleanup_mcast_list_locked(struct lkpi_hw *lhw)
{
struct list_head *le, *next;
struct netdev_hw_addr *addr;
if (lhw->mc_list.count != 0) {
list_for_each_safe(le, next, &lhw->mc_list.addr_list) {
addr = list_entry(le, struct netdev_hw_addr, addr_list);
list_del(le);
lhw->mc_list.count--;
free(addr, M_LKPI80211);
}
}
KASSERT(lhw->mc_list.count == 0, ("%s: mc_list %p count %d != 0\n",
__func__, &lhw->mc_list, lhw->mc_list.count));
}
static u_int
lkpi_ic_update_mcast_copy(void *arg, struct sockaddr_dl *sdl, u_int cnt)
{
struct netdev_hw_addr_list *mc_list;
struct netdev_hw_addr *addr;
KASSERT(arg != NULL && sdl != NULL, ("%s: arg %p sdl %p cnt %u\n",
__func__, arg, sdl, cnt));
mc_list = arg;
/* If it is on the list already skip it. */
netdev_hw_addr_list_for_each(addr, mc_list) {
if (!memcmp(addr->addr, LLADDR(sdl), sdl->sdl_alen))
return (0);
}
addr = malloc(sizeof(*addr), M_LKPI80211, M_NOWAIT | M_ZERO);
if (addr == NULL)
return (0);
INIT_LIST_HEAD(&addr->addr_list);
memcpy(addr->addr, LLADDR(sdl), sdl->sdl_alen);
/* XXX this should be a netdev function? */
list_add(&addr->addr_list, &mc_list->addr_list);
mc_list->count++;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
printf("%s:%d: mc_list count %d: added %6D\n",
__func__, __LINE__, mc_list->count, addr->addr, ":");
#endif
return (1);
}
static void
lkpi_update_mcast_filter(struct ieee80211com *ic)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
u64 mc;
unsigned int changed_flags, flags;
bool scanning;
lhw = ic->ic_softc;
LKPI_80211_LHW_SCAN_LOCK(lhw);
scanning = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
LKPI_80211_LHW_MC_LOCK(lhw);
flags = 0;
if (scanning)
flags |= FIF_BCN_PRBRESP_PROMISC;
/* The latter condition may not be as expected but seems wise. */
if (lhw->mc_all_multi || lhw->ops->prepare_multicast == NULL)
flags |= FIF_ALLMULTI;
hw = LHW_TO_HW(lhw);
mc = lkpi_80211_mo_prepare_multicast(hw, &lhw->mc_list);
changed_flags = (lhw->mc_flags ^ flags) & FIF_FLAGS_MASK;
lkpi_80211_mo_configure_filter(hw, changed_flags, &flags, mc);
lhw->mc_flags = flags;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
printf("%s: changed_flags %#06x count %d mc_flags %#010x\n",
__func__, changed_flags, lhw->mc_list.count, lhw->mc_flags);
#endif
LKPI_80211_LHW_MC_UNLOCK(lhw);
}
static enum ieee80211_bss_changed
lkpi_update_dtim_tsf(struct ieee80211_vif *vif, struct ieee80211_node *ni,
struct ieee80211vap *vap, const char *_f, int _l)
{
enum ieee80211_bss_changed bss_changed;
bss_changed = 0;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u "
"dtim_period %u sync_dtim_count %u sync_tsf %ju "
"sync_device_ts %u bss_changed %#010jx\n",
__func__, __LINE__, _f, _l,
vif->cfg.assoc, vif->cfg.aid,
vif->bss_conf.beacon_int, vif->bss_conf.dtim_period,
vif->bss_conf.sync_dtim_count,
(uintmax_t)vif->bss_conf.sync_tsf,
vif->bss_conf.sync_device_ts,
(uintmax_t)bss_changed);
#endif
if (vif->bss_conf.beacon_int != ni->ni_intval) {
vif->bss_conf.beacon_int = ni->ni_intval;
/* iwlwifi FW bug workaround; iwl_mvm_mac_sta_state. */
if (vif->bss_conf.beacon_int < 16)
vif->bss_conf.beacon_int = 16;
bss_changed |= BSS_CHANGED_BEACON_INT;
}
/*
* lkpi_iv_sta_recv_mgmt() will directly call into this function.
* iwlwifi(4) in iwl_mvm_bss_info_changed_station_common() will
* stop seesion protection the moment it sees
* BSS_CHANGED_BEACON_INFO (with the expectations that it was
* "a beacon from the associated AP"). It will also update
* the beacon filter in that case. This is the only place
* we set the BSS_CHANGED_BEACON_INFO on the non-teardown
* path so make sure we only do run this check once we are
* assoc. (*iv_recv_mgmt)() will be called before we enter
* here so the ni will be updates with information from the
* beacon via net80211::sta_recv_mgmt(). We also need to
* make sure we do not do it on every beacon we still may
* get so only do if something changed. vif->bss_conf.dtim_period
* should be 0 as we start up (we also reset it on teardown).
*/
if (vif->cfg.assoc &&
vif->bss_conf.dtim_period != ni->ni_dtim_period &&
ni->ni_dtim_period > 0) {
vif->bss_conf.dtim_period = ni->ni_dtim_period;
bss_changed |= BSS_CHANGED_BEACON_INFO;
}
vif->bss_conf.sync_dtim_count = ni->ni_dtim_count;
vif->bss_conf.sync_tsf = le64toh(ni->ni_tstamp.tsf);
/* vif->bss_conf.sync_device_ts = set in linuxkpi_ieee80211_rx. */
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u "
"dtim_period %u sync_dtim_count %u sync_tsf %ju "
"sync_device_ts %u bss_changed %#010jx\n",
__func__, __LINE__, _f, _l,
vif->cfg.assoc, vif->cfg.aid,
vif->bss_conf.beacon_int, vif->bss_conf.dtim_period,
vif->bss_conf.sync_dtim_count,
(uintmax_t)vif->bss_conf.sync_tsf,
vif->bss_conf.sync_device_ts,
(uintmax_t)bss_changed);
#endif
return (bss_changed);
}
static void
lkpi_stop_hw_scan(struct lkpi_hw *lhw, struct ieee80211_vif *vif)
{
struct ieee80211_hw *hw;
int error;
bool cancel;
TRACE_SCAN(lhw->ic, "scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS);
LKPI_80211_LHW_SCAN_LOCK(lhw);
cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
if (!cancel)
return;
hw = LHW_TO_HW(lhw);
IEEE80211_UNLOCK(lhw->ic);
wiphy_lock(hw->wiphy);
/* Need to cancel the scan. */
lkpi_80211_mo_cancel_hw_scan(hw, vif);
wiphy_unlock(hw->wiphy);
/* Need to make sure we see ieee80211_scan_completed. */
LKPI_80211_LHW_SCAN_LOCK(lhw);
if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0)
error = msleep(lhw, &lhw->scan_mtx, 0, "lhwscanstop", hz/2);
cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
IEEE80211_LOCK(lhw->ic);
if (cancel)
ic_printf(lhw->ic, "%s: failed to cancel scan: %d (%p, %p)\n",
__func__, error, lhw, vif);
}
static void
lkpi_hw_conf_idle(struct ieee80211_hw *hw, bool new)
{
struct lkpi_hw *lhw;
int error;
bool old;
old = hw->conf.flags & IEEE80211_CONF_IDLE;
if (old == new)
return;
hw->conf.flags ^= IEEE80211_CONF_IDLE;
error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_IDLE);
if (error != 0 && error != EOPNOTSUPP) {
lhw = HW_TO_LHW(hw);
ic_printf(lhw->ic, "ERROR: %s: config %#0x returned %d\n",
__func__, IEEE80211_CONF_CHANGE_IDLE, error);
}
}
static enum ieee80211_bss_changed
lkpi_disassoc(struct ieee80211_sta *sta, struct ieee80211_vif *vif,
struct lkpi_hw *lhw)
{
enum ieee80211_bss_changed changed;
struct lkpi_vif *lvif;
changed = 0;
sta->aid = 0;
if (vif->cfg.assoc) {
vif->cfg.assoc = false;
vif->cfg.aid = 0;
changed |= BSS_CHANGED_ASSOC;
IMPROVE();
lkpi_update_mcast_filter(lhw->ic);
/*
* Executing the bss_info_changed(BSS_CHANGED_ASSOC) with
* assoc = false right away here will remove the sta from
* firmware for iwlwifi.
* We no longer do this but only return the BSS_CHNAGED value.
* The caller is responsible for removing the sta gong to
* IEEE80211_STA_NOTEXIST and then executing the
* bss_info_changed() update.
* See lkpi_sta_run_to_init() for more detailed comment.
*/
lvif = VIF_TO_LVIF(vif);
lvif->beacons = 0;
}
return (changed);
}
static void
lkpi_wake_tx_queues(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
bool dequeue_seen, bool no_emptyq)
{
struct lkpi_txq *ltxq;
int tid;
bool ltxq_empty;
/* Wake up all queues to know they are allocated in the driver. */
for (tid = 0; tid < nitems(sta->txq); tid++) {
if (tid == IEEE80211_NUM_TIDS) {
IMPROVE("station specific?");
if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ))
continue;
} else if (tid >= hw->queues)
continue;
if (sta->txq[tid] == NULL)
continue;
ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
if (dequeue_seen && !ltxq->seen_dequeue)
continue;
LKPI_80211_LTXQ_LOCK(ltxq);
ltxq_empty = skb_queue_empty(&ltxq->skbq);
LKPI_80211_LTXQ_UNLOCK(ltxq);
if (no_emptyq && ltxq_empty)
continue;
lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid], false);
}
}
/*
* On the way down from RUN -> ASSOC -> AUTH we may send a DISASSOC or DEAUTH
* packet. The problem is that the state machine functions tend to hold the
* LHW lock which will prevent lkpi_80211_txq_tx_one() from sending the packet.
* We call this after dropping the ic lock and before acquiring the LHW lock.
* we make sure no further packets are queued and if they are queued the task
* will finish or be cancelled. At the end if a packet is left we manually
* send it. scan_to_auth() would re-enable sending if the lsta would be
* re-used.
*/
static void
lkpi_80211_flush_tx(struct lkpi_hw *lhw, struct lkpi_sta *lsta)
{
struct ieee80211_hw *hw;
struct mbufq mq;
struct mbuf *m;
int len;
/* There is no lockdep_assert_not_held_wiphy(). */
hw = LHW_TO_HW(lhw);
lockdep_assert_not_held(&hw->wiphy->mtx);
/* Do not accept any new packets until scan_to_auth or lsta_free(). */
LKPI_80211_LSTA_TXQ_LOCK(lsta);
lsta->txq_ready = false;
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0)
taskqueue_drain(taskqueue_thread, &lsta->txq_task);
LKPI_80211_LSTA_TXQ_LOCK(lsta);
len = mbufq_len(&lsta->txq);
if (len <= 0) {
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
return;
}
mbufq_init(&mq, IFQ_MAXLEN);
mbufq_concat(&mq, &lsta->txq);
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
m = mbufq_dequeue(&mq);
while (m != NULL) {
lkpi_80211_txq_tx_one(lsta, m);
m = mbufq_dequeue(&mq);
}
}
static void
lkpi_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct ieee80211_chanctx_conf *chanctx_conf;
struct lkpi_chanctx *lchanctx;
chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf,
lockdep_is_held(&hw->wiphy->mtx));
if (chanctx_conf == NULL)
return;
/* Remove vif context. */
lkpi_80211_mo_unassign_vif_chanctx(hw, vif, &vif->bss_conf, chanctx_conf);
lkpi_hw_conf_idle(hw, true);
/* Remove chan ctx. */
lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
/* Cleanup. */
rcu_assign_pointer(vif->bss_conf.chanctx_conf, NULL);
lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
list_del(&lchanctx->entry);
free(lchanctx, M_LKPI80211);
}
/* -------------------------------------------------------------------------- */
static int
lkpi_sta_state_do_nada(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
return (0);
}
/* lkpi_iv_newstate() handles the stop scan case generally. */
#define lkpi_sta_scan_to_init(_v, _n, _a) lkpi_sta_state_do_nada(_v, _n, _a)
static int
lkpi_sta_scan_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct linuxkpi_ieee80211_channel *chan;
struct lkpi_chanctx *lchanctx;
struct ieee80211_chanctx_conf *chanctx_conf;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_node *ni;
struct lkpi_sta *lsta;
enum ieee80211_bss_changed bss_changed;
struct ieee80211_prep_tx_info prep_tx_info;
uint32_t changed;
int error;
bool synched;
/*
* In here we use vap->iv_bss until lvif->lvif_bss is set.
* For all later (STATE >= AUTH) functions we need to use the lvif
* cache which will be tracked even through (*iv_update_bss)().
*/
if (vap->iv_bss == NULL) {
ic_printf(vap->iv_ic, "%s: no iv_bss for vap %p\n", __func__, vap);
return (EINVAL);
}
/*
* Keep the ni alive locally. In theory (and practice) iv_bss can change
* once we unlock here. This is due to net80211 allowing state changes
* and new join1() despite having an active node as well as due to
* the fact that the iv_bss can be swapped under the hood in (*iv_update_bss).
*/
ni = ieee80211_ref_node(vap->iv_bss);
if (ni->ni_chan == NULL || ni->ni_chan == IEEE80211_CHAN_ANYC) {
ic_printf(vap->iv_ic, "%s: no channel set for iv_bss ni %p "
"on vap %p\n", __func__, ni, vap);
ieee80211_free_node(ni); /* Error handling for the local ni. */
return (EINVAL);
}
lhw = vap->iv_ic->ic_softc;
chan = lkpi_find_lkpi80211_chan(lhw, ni->ni_chan);
if (chan == NULL) {
ic_printf(vap->iv_ic, "%s: failed to get LKPI channel from "
"iv_bss ni %p on vap %p\n", __func__, ni, vap);
ieee80211_free_node(ni); /* Error handling for the local ni. */
return (ESRCH);
}
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
LKPI_80211_LVIF_LOCK(lvif);
/* XXX-BZ KASSERT later? */
if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL) {
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
LKPI_80211_LVIF_UNLOCK(lvif);
ieee80211_free_node(ni); /* Error handling for the local ni. */
return (EBUSY);
}
LKPI_80211_LVIF_UNLOCK(lvif);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
/* Add chanctx (or if exists, change it). */
chanctx_conf = rcu_dereference_protected(vif->bss_conf.chanctx_conf,
lockdep_is_held(&hw->wiphy->mtx));
if (chanctx_conf != NULL) {
lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
IMPROVE("diff changes for changed, working on live copy, rcu");
} else {
/* Keep separate alloc as in Linux this is rcu managed? */
lchanctx = malloc(sizeof(*lchanctx) + hw->chanctx_data_size,
M_LKPI80211, M_WAITOK | M_ZERO);
chanctx_conf = &lchanctx->chanctx_conf;
}
chanctx_conf->rx_chains_static = 1;
chanctx_conf->rx_chains_dynamic = 1;
chanctx_conf->radar_enabled =
(chan->flags & IEEE80211_CHAN_RADAR) ? true : false;
chanctx_conf->def.chan = chan;
chanctx_conf->def.width = NL80211_CHAN_WIDTH_20_NOHT;
chanctx_conf->def.center_freq1 = ieee80211_get_channel_center_freq1(ni->ni_chan);
chanctx_conf->def.center_freq2 = ieee80211_get_channel_center_freq2(ni->ni_chan);
IMPROVE("Check vht_cap from band not just chan?");
KASSERT(ni->ni_chan != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC,
("%s:%d: ni %p ni_chan %p\n", __func__, __LINE__, ni, ni->ni_chan));
#ifdef LKPI_80211_HT
if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
if (IEEE80211_IS_CHAN_HT40(ni->ni_chan))
chanctx_conf->def.width = NL80211_CHAN_WIDTH_40;
else
chanctx_conf->def.width = NL80211_CHAN_WIDTH_20;
}
#endif
#ifdef LKPI_80211_VHT
if (IEEE80211_IS_CHAN_VHT_5GHZ(ni->ni_chan)) {
if (IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan))
chanctx_conf->def.width = NL80211_CHAN_WIDTH_80P80;
else if (IEEE80211_IS_CHAN_VHT160(ni->ni_chan))
chanctx_conf->def.width = NL80211_CHAN_WIDTH_160;
else if (IEEE80211_IS_CHAN_VHT80(ni->ni_chan))
chanctx_conf->def.width = NL80211_CHAN_WIDTH_80;
}
#endif
chanctx_conf->rx_chains_dynamic = lkpi_get_max_rx_chains(ni);
/* Responder ... */
#if 0
chanctx_conf->min_def.chan = chanctx_conf->def.chan;
chanctx_conf->min_def.width = NL80211_CHAN_WIDTH_20_NOHT;
#ifdef LKPI_80211_HT
if (IEEE80211_IS_CHAN_HT(ni->ni_chan) || IEEE80211_IS_CHAN_VHT(ni->ni_chan))
chanctx_conf->min_def.width = NL80211_CHAN_WIDTH_20;
#endif
chanctx_conf->min_def.center_freq1 = chanctx_conf->def.center_freq1;
chanctx_conf->min_def.center_freq2 = chanctx_conf->def.center_freq2;
#else
chanctx_conf->min_def = chanctx_conf->def;
#endif
/* Set bss info (bss_info_changed). */
bss_changed = 0;
vif->bss_conf.bssid = ni->ni_bssid;
bss_changed |= BSS_CHANGED_BSSID;
vif->bss_conf.txpower = ni->ni_txpower;
bss_changed |= BSS_CHANGED_TXPOWER;
vif->cfg.idle = false;
bss_changed |= BSS_CHANGED_IDLE;
/* vif->bss_conf.basic_rates ? Where exactly? */
lvif->beacons = 0;
/* Should almost assert it is this. */
vif->cfg.assoc = false;
vif->cfg.aid = 0;
bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
error = 0;
if (vif->bss_conf.chanctx_conf == chanctx_conf) {
changed = IEEE80211_CHANCTX_CHANGE_MIN_WIDTH;
changed |= IEEE80211_CHANCTX_CHANGE_RADAR;
changed |= IEEE80211_CHANCTX_CHANGE_RX_CHAINS;
changed |= IEEE80211_CHANCTX_CHANGE_WIDTH;
lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed);
} else {
/* The device is no longer idle. */
IMPROVE("Once we do multi-vif, only do for 1st chanctx");
lkpi_hw_conf_idle(hw, false);
error = lkpi_80211_mo_add_chanctx(hw, chanctx_conf);
if (error == 0 || error == EOPNOTSUPP) {
vif->bss_conf.chanreq.oper.chan = chanctx_conf->def.chan;
vif->bss_conf.chanreq.oper.width = chanctx_conf->def.width;
vif->bss_conf.chanreq.oper.center_freq1 =
chanctx_conf->def.center_freq1;
vif->bss_conf.chanreq.oper.center_freq2 =
chanctx_conf->def.center_freq2;
} else {
ic_printf(vap->iv_ic, "%s:%d: mo_add_chanctx "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
list_add_rcu(&lchanctx->entry, &lhw->lchanctx_list);
rcu_assign_pointer(vif->bss_conf.chanctx_conf, chanctx_conf);
/* Assign vif chanctx. */
if (error == 0)
error = lkpi_80211_mo_assign_vif_chanctx(hw, vif,
&vif->bss_conf, chanctx_conf);
if (error == EOPNOTSUPP)
error = 0;
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_assign_vif_chanctx "
"failed: %d\n", __func__, __LINE__, error);
lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
rcu_assign_pointer(vif->bss_conf.chanctx_conf, NULL);
lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
list_del(&lchanctx->entry);
free(lchanctx, M_LKPI80211);
goto out;
}
}
IMPROVE("update radiotap chan fields too");
/* RATES */
IMPROVE("bss info: not all needs to come now and rates are missing");
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
/*
* Given ni and lsta are 1:1 from alloc to free we can assert that
* ni always has lsta data attach despite net80211 node swapping
* under the hoods.
*/
KASSERT(ni->ni_drv_data != NULL, ("%s: ni %p ni_drv_data %p\n",
__func__, ni, ni->ni_drv_data));
lsta = ni->ni_drv_data;
/* Insert the [l]sta into the list of known stations. */
list_add_tail(&lsta->lsta_list, &lvif->lsta_list);
/* Add (or adjust) sta and change state (from NOTEXIST) to NONE. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_NOTEXIST, ("%s: lsta %p state not "
"NOTEXIST: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
if (error != 0) {
IMPROVE("do we need to undo the chan ctx?");
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
#if 0
lsta->added_to_drv = true; /* mo manages. */
#endif
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
#if 0
/*
* Wakeup all queues now that sta is there so we have as much time to
* possibly prepare the queue in the driver to be ready for the 1st
* packet; lkpi_80211_txq_tx_one() still has a workaround as there
* is no guarantee or way to check.
* XXX-BZ and by now we know that this does not work on all drivers
* for all queues.
*/
lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, false);
#endif
/* Start mgd_prepare_tx. */
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.duration = PREP_TX_INFO_DURATION;
lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = true;
/*
* What is going to happen next:
* - <twiddle> .. we should end up in "auth_to_assoc"
* - event_callback
* - update sta_state (NONE to AUTH)
* - mgd_complete_tx
* (ideally we'd do that on a callback for something else ...)
*/
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
LKPI_80211_LVIF_LOCK(lvif);
/* Re-check given (*iv_update_bss) could have happened while we were unlocked. */
if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL ||
lsta->ni != vap->iv_bss)
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d, ni %p lsta %p\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched, ni, lsta);
/*
* Reference the "ni" for caching the lsta/ni in lvif->lvif_bss.
* Given we cache lsta we use lsta->ni instead of ni here (even though
* lsta->ni == ni) to be distinct from the rest of the code where we do
* assume that ni == vap->iv_bss which it may or may not be.
* So do NOT use iv_bss here anymore as that may have diverged from our
* function local ni already while ic was unlocked and would lead to
* inconsistencies. Go and see if we lost a race and do not update
* lvif_bss_synched in that case.
*/
ieee80211_ref_node(lsta->ni);
lvif->lvif_bss = lsta;
if (lsta->ni == vap->iv_bss) {
lvif->lvif_bss_synched = synched = true;
} else {
/* Set to un-synched no matter what. */
lvif->lvif_bss_synched = synched = false;
/*
* We do not error as someone has to take us down.
* If we are followed by a 2nd, new net80211::join1() going to
* AUTH lkpi_sta_a_to_a() will error, lkpi_sta_auth_to_{scan,init}()
* will take the lvif->lvif_bss node down eventually.
* What happens with the vap->iv_bss node will entirely be up
* to net80211 as we never used the node beyond alloc()/free()
* and we do not hold an extra reference for that anymore given
* ni : lsta == 1:1.
* Problem is if we do not error a MGMT/AUTH frame will be
* sent from net80211::sta_newstate(); disable lsta queue below.
*/
}
LKPI_80211_LVIF_UNLOCK(lvif);
/*
* Make sure in case the sta did not change and we re-added it,
* that we can tx again but only if the vif/iv_bss are in sync.
* Otherwise this should prevent the MGMT/AUTH frame from being
* sent triggering a warning in iwlwifi.
*/
LKPI_80211_LSTA_TXQ_LOCK(lsta);
lsta->txq_ready = synched;
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
goto out_relocked;
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
out_relocked:
/*
* Release the reference that kept the ni stable locally
* during the work of this function.
*/
if (ni != NULL)
ieee80211_free_node(ni);
return (error);
}
static int
lkpi_sta_auth_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_node *ni;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_prep_tx_info prep_tx_info;
enum ieee80211_bss_changed bss_changed;
int error;
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
LKPI_80211_LVIF_LOCK(lvif);
#ifdef LINUXKPI_DEBUG_80211
/* XXX-BZ KASSERT later; state going down so no action. */
if (lvif->lvif_bss == NULL)
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
#endif
lsta = lvif->lvif_bss;
LKPI_80211_LVIF_UNLOCK(lvif);
KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
"lvif %p vap %p\n", __func__,
lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
ni = lsta->ni; /* Reference held for lvif_bss. */
sta = LSTA_TO_STA(lsta);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
/* flush, drop. */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
/* Wake tx queues to get packet(s) out. */
lkpi_wake_tx_queues(hw, sta, false, true);
/* flush, no drop */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
/* End mgd_complete_tx. */
if (lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.success = false;
lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = false;
}
/* sync_rx_queues */
lkpi_80211_mo_sync_rx_queues(hw);
/* sta_pre_rcu_remove */
lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
/* Take the station down. */
/* Adjust sta and change state (from NONE) to NOTEXIST. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
"NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
if (error != 0) {
IMPROVE("do we need to undo the chan ctx?");
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
#if 0
lsta->added_to_drv = false; /* mo manages. */
#endif
bss_changed = 0;
vif->bss_conf.dtim_period = 0; /* go back to 0. */
bss_changed |= BSS_CHANGED_BEACON_INFO;
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
LKPI_80211_LVIF_LOCK(lvif);
/* Remove ni reference for this cache of lsta. */
lvif->lvif_bss = NULL;
lvif->lvif_bss_synched = false;
LKPI_80211_LVIF_UNLOCK(lvif);
lkpi_lsta_remove(lsta, lvif);
/* conf_tx */
lkpi_remove_chanctx(hw, vif);
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
if (error == 0) {
/*
* We do this outside the wiphy lock as net80211::node_free() may call
* into crypto code to delete keys and we have a recursed on
* non-recursive sx panic. Also only do this if we get here w/o error.
*
* The very last release the reference on the ni for the ni/lsta on
* lvif->lvif_bss. Upon return from this both ni and lsta are invalid
* and potentially freed.
*/
ieee80211_free_node(ni);
}
return (error);
}
static int
lkpi_sta_auth_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
int error;
error = lkpi_sta_auth_to_scan(vap, nstate, arg);
if (error == 0)
error = lkpi_sta_scan_to_init(vap, nstate, arg);
return (error);
}
static int
lkpi_sta_auth_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_prep_tx_info prep_tx_info;
int error;
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
LKPI_80211_LVIF_LOCK(lvif);
/* XXX-BZ KASSERT later? */
if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
#ifdef LINUXKPI_DEBUG_80211
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
#endif
error = ENOTRECOVERABLE;
LKPI_80211_LVIF_UNLOCK(lvif);
goto out;
}
lsta = lvif->lvif_bss;
LKPI_80211_LVIF_UNLOCK(lvif);
KASSERT(lsta != NULL, ("%s: lsta %p\n", __func__, lsta));
/* Finish auth. */
IMPROVE("event callback");
/* Update sta_state (NONE to AUTH). */
KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
"NONE: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
/* End mgd_complete_tx. */
if (lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.success = true;
lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = false;
}
/* Now start assoc. */
/* Start mgd_prepare_tx. */
if (!lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.duration = PREP_TX_INFO_DURATION;
lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = true;
}
/* Wake tx queue to get packet out. */
lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, true);
/*
* <twiddle> .. we end up in "assoc_to_run"
* - update sta_state (AUTH to ASSOC)
* - conf_tx [all]
* - bss_info_changed (assoc, aid, ssid, ..)
* - change_chanctx (if needed)
* - event_callback
* - mgd_complete_tx
*/
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
return (error);
}
/* auth_to_auth, assoc_to_assoc. */
static int
lkpi_sta_a_to_a(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_prep_tx_info prep_tx_info;
int error;
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
LKPI_80211_LVIF_LOCK(lvif);
/* XXX-BZ KASSERT later? */
if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
#ifdef LINUXKPI_DEBUG_80211
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
#endif
LKPI_80211_LVIF_UNLOCK(lvif);
error = ENOTRECOVERABLE;
goto out;
}
lsta = lvif->lvif_bss;
LKPI_80211_LVIF_UNLOCK(lvif);
KASSERT(lsta != NULL, ("%s: lsta %p! lvif %p vap %p\n", __func__,
lsta, lvif, vap));
IMPROVE("event callback?");
/* End mgd_complete_tx. */
if (lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.success = false;
lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = false;
}
/* Now start assoc. */
/* Start mgd_prepare_tx. */
if (!lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.duration = PREP_TX_INFO_DURATION;
lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = true;
}
error = 0;
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
return (error);
}
static int
_lkpi_sta_assoc_to_down(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_node *ni;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_prep_tx_info prep_tx_info;
enum ieee80211_bss_changed bss_changed;
int error;
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
LKPI_80211_LVIF_LOCK(lvif);
#ifdef LINUXKPI_DEBUG_80211
/* XXX-BZ KASSERT later; state going down so no action. */
if (lvif->lvif_bss == NULL)
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
#endif
lsta = lvif->lvif_bss;
LKPI_80211_LVIF_UNLOCK(lvif);
KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
"lvif %p vap %p\n", __func__,
lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
ni = lsta->ni; /* Reference held for lvif_bss. */
sta = LSTA_TO_STA(lsta);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* flush, drop. */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
!lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.duration = PREP_TX_INFO_DURATION;
prep_tx_info.was_assoc = true;
lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = true;
}
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
/* Call iv_newstate first so we get potential DEAUTH packet out. */
error = lvif->iv_newstate(vap, nstate, arg);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
"failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
goto outni;
}
IEEE80211_UNLOCK(vap->iv_ic);
/* Ensure the packets get out. */
lkpi_80211_flush_tx(lhw, lsta);
wiphy_lock(hw->wiphy);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* Wake tx queues to get packet(s) out. */
lkpi_wake_tx_queues(hw, sta, false, true);
/* flush, no drop */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
/* End mgd_complete_tx. */
if (lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.success = false;
prep_tx_info.was_assoc = true;
lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = false;
}
/* sync_rx_queues */
lkpi_80211_mo_sync_rx_queues(hw);
/* sta_pre_rcu_remove */
lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
/* Take the station down. */
/* Update sta and change state (from AUTH) to NONE. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
"AUTH: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
/* See comment in lkpi_sta_run_to_init(). */
bss_changed = 0;
bss_changed |= lkpi_disassoc(sta, vif, lhw);
#ifdef LKPI_80211_HW_CRYPTO
/*
* In theory we remove keys here but there must not exist any for this
* state change until we clean them up again into small steps and no
* code duplication.
*/
#endif
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* Adjust sta and change state (from NONE) to NOTEXIST. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
"NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
if (error != 0) {
IMPROVE("do we need to undo the chan ctx?");
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* sta no longer save to use. */
IMPROVE("Any bss_info changes to announce?");
vif->bss_conf.qos = 0;
bss_changed |= BSS_CHANGED_QOS;
vif->cfg.ssid_len = 0;
memset(vif->cfg.ssid, '\0', sizeof(vif->cfg.ssid));
bss_changed |= BSS_CHANGED_BSSID;
vif->bss_conf.dtim_period = 0; /* go back to 0. */
bss_changed |= BSS_CHANGED_BEACON_INFO;
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
LKPI_80211_LVIF_LOCK(lvif);
/* Remove ni reference for this cache of lsta. */
lvif->lvif_bss = NULL;
lvif->lvif_bss_synched = false;
LKPI_80211_LVIF_UNLOCK(lvif);
lkpi_lsta_remove(lsta, lvif);
/* conf_tx */
lkpi_remove_chanctx(hw, vif);
error = EALREADY;
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
if (error == EALREADY) {
/*
* We do this outside the wiphy lock as net80211::node_free() may call
* into crypto code to delete keys and we have a recursed on
* non-recursive sx panic. Also only do this if we get here w/o error.
*
* The very last release the reference on the ni for the ni/lsta on
* lvif->lvif_bss. Upon return from this both ni and lsta are invalid
* and potentially freed.
*/
ieee80211_free_node(ni);
}
outni:
return (error);
}
static int
lkpi_sta_assoc_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
int error;
error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
if (error != 0 && error != EALREADY)
return (error);
/* At this point iv_bss is long a new node! */
error |= lkpi_sta_scan_to_auth(vap, nstate, 0);
return (error);
}
static int
lkpi_sta_assoc_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
int error;
error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
return (error);
}
static int
lkpi_sta_assoc_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
int error;
error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
return (error);
}
static int
lkpi_sta_assoc_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_node *ni;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_prep_tx_info prep_tx_info;
enum ieee80211_bss_changed bss_changed;
int error;
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
LKPI_80211_LVIF_LOCK(lvif);
/* XXX-BZ KASSERT later? */
if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
#ifdef LINUXKPI_DEBUG_80211
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
#endif
LKPI_80211_LVIF_UNLOCK(lvif);
error = ENOTRECOVERABLE;
goto out;
}
lsta = lvif->lvif_bss;
LKPI_80211_LVIF_UNLOCK(lvif);
KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
"lvif %p vap %p\n", __func__,
lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
ni = lsta->ni; /* Reference held for lvif_bss. */
IMPROVE("ponder some of this moved to ic_newassoc, scan_assoc_success, "
"and to lesser extend ieee80211_notify_node_join");
/* Finish assoc. */
/* Update sta_state (AUTH to ASSOC) and set aid. */
KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
"AUTH: %#x\n", __func__, lsta, lsta->state));
sta = LSTA_TO_STA(lsta);
sta->aid = IEEE80211_NODE_AID(ni);
#ifdef LKPI_80211_WME
if (vap->iv_flags & IEEE80211_F_WME)
sta->wme = true;
#endif
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
IMPROVE("wme / conf_tx [all]");
/* Update bss info (bss_info_changed) (assoc, aid, ..). */
bss_changed = 0;
#ifdef LKPI_80211_WME
bss_changed |= lkpi_wme_update(lhw, vap, true);
#endif
if (!vif->cfg.assoc || vif->cfg.aid != IEEE80211_NODE_AID(ni)) {
lvif->beacons = 0;
vif->cfg.assoc = true;
vif->cfg.aid = IEEE80211_NODE_AID(ni);
bss_changed |= BSS_CHANGED_ASSOC;
}
/* We set SSID but this is not BSSID! */
vif->cfg.ssid_len = ni->ni_esslen;
memcpy(vif->cfg.ssid, ni->ni_essid, ni->ni_esslen);
if ((vap->iv_flags & IEEE80211_F_SHPREAMBLE) !=
vif->bss_conf.use_short_preamble) {
vif->bss_conf.use_short_preamble ^= 1;
/* bss_changed |= BSS_CHANGED_??? */
}
if ((vap->iv_flags & IEEE80211_F_SHSLOT) !=
vif->bss_conf.use_short_slot) {
vif->bss_conf.use_short_slot ^= 1;
/* bss_changed |= BSS_CHANGED_??? */
}
if ((ni->ni_flags & IEEE80211_NODE_QOS) !=
vif->bss_conf.qos) {
vif->bss_conf.qos ^= 1;
bss_changed |= BSS_CHANGED_QOS;
}
bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
/* - change_chanctx (if needed)
* - event_callback
*/
/* End mgd_complete_tx. */
if (lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.success = true;
lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = false;
}
/*
* And then:
* - (more packets)?
* - set_key
* - set_default_unicast_key
* - set_key (?)
* - ipv6_addr_change (?)
*/
if (!ieee80211_node_is_authorized(ni)) {
IMPROVE("net80211 does not consider node authorized");
}
IMPROVE("Is this the right spot, has net80211 done all updates already?");
lkpi_sta_sync_from_ni(hw, vif, sta, ni, true);
/* Update thresholds. */
hw->wiphy->frag_threshold = vap->iv_fragthreshold;
lkpi_80211_mo_set_frag_threshold(hw, vap->iv_fragthreshold);
hw->wiphy->rts_threshold = vap->iv_rtsthreshold;
lkpi_80211_mo_set_rts_threshold(hw, vap->iv_rtsthreshold);
/* Update sta_state (ASSOC to AUTHORIZED). */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
"ASSOC: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTHORIZED);
if (error != 0) {
IMPROVE("undo some changes?");
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTHORIZED) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
/* - drv_config (?)
* - bss_info_changed
* - set_rekey_data (?)
*
* And now we should be passing packets.
*/
IMPROVE("Need that bssid setting, and the keys");
bss_changed = 0;
bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
/* Prepare_multicast && configure_filter. */
lkpi_update_mcast_filter(vap->iv_ic);
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
return (error);
}
static int
lkpi_sta_auth_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
int error;
error = lkpi_sta_auth_to_assoc(vap, nstate, arg);
if (error == 0)
error = lkpi_sta_assoc_to_run(vap, nstate, arg);
return (error);
}
static int
lkpi_sta_run_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_node *ni;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_prep_tx_info prep_tx_info;
#if 0
enum ieee80211_bss_changed bss_changed;
#endif
int error;
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
LKPI_80211_LVIF_LOCK(lvif);
#ifdef LINUXKPI_DEBUG_80211
/* XXX-BZ KASSERT later; state going down so no action. */
if (lvif->lvif_bss == NULL)
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
#endif
lsta = lvif->lvif_bss;
LKPI_80211_LVIF_UNLOCK(lvif);
KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
"lvif %p vap %p\n", __func__,
lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
ni = lsta->ni; /* Reference held for lvif_bss. */
sta = LSTA_TO_STA(lsta);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
/* flush, drop. */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
!lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.duration = PREP_TX_INFO_DURATION;
prep_tx_info.was_assoc = true;
lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = true;
}
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
/* Call iv_newstate first so we get potential DISASSOC packet out. */
error = lvif->iv_newstate(vap, nstate, arg);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
"failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
goto outni;
}
IEEE80211_UNLOCK(vap->iv_ic);
/* Ensure the packets get out. */
lkpi_80211_flush_tx(lhw, lsta);
wiphy_lock(hw->wiphy);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* Wake tx queues to get packet(s) out. */
lkpi_wake_tx_queues(hw, sta, false, true);
/* flush, no drop */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
/* End mgd_complete_tx. */
if (lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.success = false;
prep_tx_info.was_assoc = true;
lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = false;
}
#if 0
/* sync_rx_queues */
lkpi_80211_mo_sync_rx_queues(hw);
/* sta_pre_rcu_remove */
lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
#endif
/* Take the station down. */
/* Adjust sta and change state (from AUTHORIZED) to ASSOC. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_AUTHORIZED, ("%s: lsta %p state not "
"AUTHORIZED: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
#ifdef LKPI_80211_HW_CRYPTO
if (lkpi_hwcrypto) {
error = lkpi_sta_del_keys(hw, vif, lsta);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: lkpi_sta_del_keys "
"failed: %d\n", __func__, __LINE__, error);
/*
* Either drv/fw will crash or cleanup itself,
* otherwise net80211 will delete the keys (at a
* less appropriate time).
*/
/* goto out; */
}
}
#endif
/* Update sta_state (ASSOC to AUTH). */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
"ASSOC: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
#if 0
/* Update bss info (bss_info_changed) (assoc, aid, ..). */
lkpi_disassoc(sta, vif, lhw);
#endif
error = EALREADY;
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
outni:
return (error);
}
static int
lkpi_sta_run_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_node *ni;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_prep_tx_info prep_tx_info;
enum ieee80211_bss_changed bss_changed;
int error;
lhw = vap->iv_ic->ic_softc;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
IEEE80211_UNLOCK(vap->iv_ic);
wiphy_lock(hw->wiphy);
LKPI_80211_LVIF_LOCK(lvif);
#ifdef LINUXKPI_DEBUG_80211
/* XXX-BZ KASSERT later; state going down so no action. */
if (lvif->lvif_bss == NULL)
ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
"lvif_bss->ni %p synched %d\n", __func__, __LINE__,
lvif, vap, vap->iv_bss, lvif->lvif_bss,
(lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
lvif->lvif_bss_synched);
#endif
lsta = lvif->lvif_bss;
LKPI_80211_LVIF_UNLOCK(lvif);
KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
"lvif %p vap %p\n", __func__,
lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
ni = lsta->ni; /* Reference held for lvif_bss. */
sta = LSTA_TO_STA(lsta);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* flush, drop. */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
!lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.duration = PREP_TX_INFO_DURATION;
prep_tx_info.was_assoc = true;
lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = true;
}
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
/* Call iv_newstate first so we get potential DISASSOC packet out. */
error = lvif->iv_newstate(vap, nstate, arg);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
"failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
goto outni;
}
IEEE80211_UNLOCK(vap->iv_ic);
/* Ensure the packets get out. */
lkpi_80211_flush_tx(lhw, lsta);
wiphy_lock(hw->wiphy);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* Wake tx queues to get packet(s) out. */
lkpi_wake_tx_queues(hw, sta, false, true);
/* flush, no drop */
lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
/* End mgd_complete_tx. */
if (lsta->in_mgd) {
memset(&prep_tx_info, 0, sizeof(prep_tx_info));
prep_tx_info.success = false;
prep_tx_info.was_assoc = true;
lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
lsta->in_mgd = false;
}
/* sync_rx_queues */
lkpi_80211_mo_sync_rx_queues(hw);
/* sta_pre_rcu_remove */
lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
/* Take the station down. */
/* Adjust sta and change state (from AUTHORIZED) to ASSOC. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_AUTHORIZED, ("%s: lsta %p state not "
"AUTHORIZED: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
#ifdef LKPI_80211_HW_CRYPTO
if (lkpi_hwcrypto) {
/*
* In theory we only need to do this if we changed assoc.
* If we were not assoc, there should be no keys and we
* should not be here.
*/
#ifdef notyet
KASSERT((bss_changed & BSS_CHANGED_ASSOC) != 0, ("%s: "
"trying to remove keys but were not assoc: %#010jx, lvif %p\n",
__func__, (uintmax_t)bss_changed, lvif));
#endif
error = lkpi_sta_del_keys(hw, vif, lsta);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: lkpi_sta_del_keys "
"failed: %d\n", __func__, __LINE__, error);
/*
* Either drv/fw will crash or cleanup itself,
* otherwise net80211 will delete the keys (at a
* less appropriate time).
*/
/* goto out; */
}
}
#endif
/* Update sta_state (ASSOC to AUTH). */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
"ASSOC: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* Update sta and change state (from AUTH) to NONE. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
"AUTH: %#x\n", __func__, lsta, lsta->state));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
if (error != 0) {
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
bss_changed = 0;
/*
* Start updating bss info (bss_info_changed) (assoc, aid, ..).
*
* One would expect this to happen when going off AUTHORIZED.
* See comment there; removes the sta from fw if not careful
* (bss_info_changed() change is executed right away).
*
* We need to do this now, before sta changes to IEEE80211_STA_NOTEXIST
* as otherwise drivers (iwlwifi at least) will silently not remove
* the sta from the firmware and when we will add a new one trigger
* a fw assert.
*
* The order which works best so far avoiding early removal or silent
* non-removal seems to be (for iwlwifi::mld-mac80211.c cases;
* the iwlwifi:mac80211.c case still to be tested):
* 1) lkpi_disassoc(): set vif->cfg.assoc = false (aid=0 side effect here)
* 2) call the last sta_state update -> IEEE80211_STA_NOTEXIST
* (removes the sta given assoc is false)
* 3) add the remaining BSS_CHANGED changes and call bss_info_changed()
* 4) call unassign_vif_chanctx
* 5) call lkpi_hw_conf_idle
* 6) call remove_chanctx
*
* Note: vif->driver_flags & IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC
* might change this.
*/
bss_changed |= lkpi_disassoc(sta, vif, lhw);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
/* Adjust sta and change state (from NONE) to NOTEXIST. */
KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
"NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
if (error != 0) {
IMPROVE("do we need to undo the chan ctx?");
ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
"failed: %d\n", __func__, __LINE__, error);
goto out;
}
lkpi_lsta_remove(lsta, lvif);
lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* sta no longer save to use. */
IMPROVE("Any bss_info changes to announce?");
vif->bss_conf.qos = 0;
bss_changed |= BSS_CHANGED_QOS;
vif->cfg.ssid_len = 0;
memset(vif->cfg.ssid, '\0', sizeof(vif->cfg.ssid));
bss_changed |= BSS_CHANGED_BSSID;
vif->bss_conf.use_short_preamble = false;
vif->bss_conf.qos = false;
/* XXX BSS_CHANGED_???? */
vif->bss_conf.dtim_period = 0; /* go back to 0. */
bss_changed |= BSS_CHANGED_BEACON_INFO;
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
LKPI_80211_LVIF_LOCK(lvif);
/* Remove ni reference for this cache of lsta. */
lvif->lvif_bss = NULL;
lvif->lvif_bss_synched = false;
LKPI_80211_LVIF_UNLOCK(lvif);
/* conf_tx */
lkpi_remove_chanctx(hw, vif);
error = EALREADY;
out:
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(vap->iv_ic);
if (error == EALREADY) {
/*
* We do this outside the wiphy lock as net80211::node_free() may call
* into crypto code to delete keys and we have a recursed on
* non-recursive sx panic. Also only do this if we get here w/o error.
*
* The very last release the reference on the ni for the ni/lsta on
* lvif->lvif_bss. Upon return from this both ni and lsta are invalid
* and potentially freed.
*/
ieee80211_free_node(ni);
}
outni:
return (error);
}
static int
lkpi_sta_run_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
return (lkpi_sta_run_to_init(vap, nstate, arg));
}
static int
lkpi_sta_run_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
int error;
error = lkpi_sta_run_to_init(vap, nstate, arg);
if (error != 0 && error != EALREADY)
return (error);
/* At this point iv_bss is long a new node! */
error |= lkpi_sta_scan_to_auth(vap, nstate, 0);
return (error);
}
/* -------------------------------------------------------------------------- */
/*
* The matches the documented state changes in net80211::sta_newstate().
* XXX (1) without CSA and SLEEP yet, * XXX (2) not all unhandled cases
* there are "invalid" (so there is a room for failure here).
*/
struct fsm_state {
/* INIT, SCAN, AUTH, ASSOC, CAC, RUN, CSA, SLEEP */
enum ieee80211_state ostate;
enum ieee80211_state nstate;
int (*handler)(struct ieee80211vap *, enum ieee80211_state, int);
} sta_state_fsm[] = {
{ IEEE80211_S_INIT, IEEE80211_S_INIT, lkpi_sta_state_do_nada },
{ IEEE80211_S_SCAN, IEEE80211_S_INIT, lkpi_sta_state_do_nada }, /* scan_to_init */
{ IEEE80211_S_AUTH, IEEE80211_S_INIT, lkpi_sta_auth_to_init }, /* not explicitly in sta_newstate() */
{ IEEE80211_S_ASSOC, IEEE80211_S_INIT, lkpi_sta_assoc_to_init }, /* Send DEAUTH. */
{ IEEE80211_S_RUN, IEEE80211_S_INIT, lkpi_sta_run_to_init }, /* Send DISASSOC. */
{ IEEE80211_S_INIT, IEEE80211_S_SCAN, lkpi_sta_state_do_nada },
{ IEEE80211_S_SCAN, IEEE80211_S_SCAN, lkpi_sta_state_do_nada },
{ IEEE80211_S_AUTH, IEEE80211_S_SCAN, lkpi_sta_auth_to_scan },
{ IEEE80211_S_ASSOC, IEEE80211_S_SCAN, lkpi_sta_assoc_to_scan },
{ IEEE80211_S_RUN, IEEE80211_S_SCAN, lkpi_sta_run_to_scan }, /* Beacon miss. */
{ IEEE80211_S_INIT, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* Send AUTH. */
{ IEEE80211_S_SCAN, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* Send AUTH. */
{ IEEE80211_S_AUTH, IEEE80211_S_AUTH, lkpi_sta_a_to_a }, /* Send ?AUTH. */
{ IEEE80211_S_ASSOC, IEEE80211_S_AUTH, lkpi_sta_assoc_to_auth }, /* Send ?AUTH. */
{ IEEE80211_S_RUN, IEEE80211_S_AUTH, lkpi_sta_run_to_auth }, /* Send ?AUTH. */
{ IEEE80211_S_AUTH, IEEE80211_S_ASSOC, lkpi_sta_auth_to_assoc }, /* Send ASSOCREQ. */
{ IEEE80211_S_ASSOC, IEEE80211_S_ASSOC, lkpi_sta_a_to_a }, /* Send ASSOCREQ. */
{ IEEE80211_S_RUN, IEEE80211_S_ASSOC, lkpi_sta_run_to_assoc }, /* Send ASSOCREQ/REASSOCREQ. */
{ IEEE80211_S_AUTH, IEEE80211_S_RUN, lkpi_sta_auth_to_run },
{ IEEE80211_S_ASSOC, IEEE80211_S_RUN, lkpi_sta_assoc_to_run },
{ IEEE80211_S_RUN, IEEE80211_S_RUN, lkpi_sta_state_do_nada },
/* Dummy at the end without handler. */
{ IEEE80211_S_INIT, IEEE80211_S_INIT, NULL },
};
static int
lkpi_iv_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct fsm_state *s;
enum ieee80211_state ostate;
int error;
ic = vap->iv_ic;
IEEE80211_LOCK_ASSERT(ic);
ostate = vap->iv_state;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x\n",
__func__, __LINE__, vap, nstate, arg);
#endif
if (vap->iv_opmode == IEEE80211_M_STA) {
lhw = ic->ic_softc;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
/* No need to replicate this in most state handlers. */
if (nstate > IEEE80211_S_SCAN)
lkpi_stop_hw_scan(lhw, vif);
s = sta_state_fsm;
} else {
ic_printf(vap->iv_ic, "%s: only station mode currently supported: "
"cap %p iv_opmode %d\n", __func__, vap, vap->iv_opmode);
return (ENOSYS);
}
error = 0;
for (; s->handler != NULL; s++) {
if (ostate == s->ostate && nstate == s->nstate) {
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
ic_printf(vap->iv_ic, "%s: new state %d (%s) ->"
" %d (%s): arg %d.\n", __func__,
ostate, ieee80211_state_name[ostate],
nstate, ieee80211_state_name[nstate], arg);
#endif
error = s->handler(vap, nstate, arg);
break;
}
}
IEEE80211_LOCK_ASSERT(vap->iv_ic);
if (s->handler == NULL) {
IMPROVE("turn this into a KASSERT\n");
ic_printf(vap->iv_ic, "%s: unsupported state transition "
"%d (%s) -> %d (%s)\n", __func__,
ostate, ieee80211_state_name[ostate],
nstate, ieee80211_state_name[nstate]);
return (ENOSYS);
}
if (error == EALREADY) {
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
ic_printf(vap->iv_ic, "%s: state transition %d (%s) -> "
"%d (%s): iv_newstate already handled: %d.\n",
__func__, ostate, ieee80211_state_name[ostate],
nstate, ieee80211_state_name[nstate], error);
#endif
return (0);
}
if (error != 0) {
ic_printf(vap->iv_ic, "%s: error %d during state transition "
"%d (%s) -> %d (%s)\n", __func__, error,
ostate, ieee80211_state_name[ostate],
nstate, ieee80211_state_name[nstate]);
return (error);
}
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE)
ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x "
"calling net80211 parent\n",
__func__, __LINE__, vap, nstate, arg);
#endif
return (lvif->iv_newstate(vap, nstate, arg));
}
/* -------------------------------------------------------------------------- */
/*
* We overload (*iv_update_bss) as otherwise we have cases in, e.g.,
* net80211::ieee80211_sta_join1() where vap->iv_bss gets replaced by a
* new node without us knowing and thus our ni/lsta are out of sync.
*/
static struct ieee80211_node *
lkpi_iv_update_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
{
struct lkpi_vif *lvif;
struct ieee80211_node *rni;
IEEE80211_LOCK_ASSERT(vap->iv_ic);
lvif = VAP_TO_LVIF(vap);
LKPI_80211_LVIF_LOCK(lvif);
lvif->lvif_bss_synched = false;
LKPI_80211_LVIF_UNLOCK(lvif);
rni = lvif->iv_update_bss(vap, ni);
return (rni);
}
#ifdef LKPI_80211_WME
static int
lkpi_wme_update(struct lkpi_hw *lhw, struct ieee80211vap *vap, bool planned)
{
struct ieee80211com *ic;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct chanAccParams chp;
struct wmeParams wmeparr[WME_NUM_AC];
struct ieee80211_tx_queue_params txqp;
enum ieee80211_bss_changed changed;
int error;
uint16_t ac;
hw = LHW_TO_HW(lhw);
lockdep_assert_wiphy(hw->wiphy);
IMPROVE();
KASSERT(WME_NUM_AC == IEEE80211_NUM_ACS, ("%s: WME_NUM_AC %d != "
"IEEE80211_NUM_ACS %d\n", __func__, WME_NUM_AC, IEEE80211_NUM_ACS));
if (vap == NULL)
return (0);
if ((vap->iv_flags & IEEE80211_F_WME) == 0)
return (0);
if (lhw->ops->conf_tx == NULL)
return (0);
if (!planned && (vap->iv_state != IEEE80211_S_RUN)) {
lhw->update_wme = true;
return (0);
}
lhw->update_wme = false;
ic = lhw->ic;
ieee80211_wme_ic_getparams(ic, &chp);
IEEE80211_LOCK(ic);
for (ac = 0; ac < WME_NUM_AC; ac++)
wmeparr[ac] = chp.cap_wmeParams[ac];
IEEE80211_UNLOCK(ic);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
/* Configure tx queues (conf_tx) & send BSS_CHANGED_QOS. */
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
struct wmeParams *wmep;
wmep = &wmeparr[ac];
bzero(&txqp, sizeof(txqp));
txqp.cw_min = wmep->wmep_logcwmin;
txqp.cw_max = wmep->wmep_logcwmax;
txqp.txop = wmep->wmep_txopLimit;
txqp.aifs = wmep->wmep_aifsn;
error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp);
if (error != 0)
ic_printf(ic, "%s: conf_tx ac %u failed %d\n",
__func__, ac, error);
}
changed = BSS_CHANGED_QOS;
if (!planned)
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
return (changed);
}
#endif
static int
lkpi_ic_wme_update(struct ieee80211com *ic)
{
#ifdef LKPI_80211_WME
struct ieee80211vap *vap;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
IMPROVE("Use the per-VAP callback in net80211.");
vap = TAILQ_FIRST(&ic->ic_vaps);
if (vap == NULL)
return (0);
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
wiphy_lock(hw->wiphy);
lkpi_wme_update(lhw, vap, false);
wiphy_unlock(hw->wiphy);
#endif
return (0); /* unused */
}
static void
lkpi_iv_sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0,
int subtype, const struct ieee80211_rx_stats *rxs, int rssi, int nf)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
enum ieee80211_bss_changed bss_changed;
lvif = VAP_TO_LVIF(ni->ni_vap);
vif = LVIF_TO_VIF(lvif);
lvif->iv_recv_mgmt(ni, m0, subtype, rxs, rssi, nf);
switch (subtype) {
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
break;
case IEEE80211_FC0_SUBTYPE_BEACON:
/*
* Only count beacons when assoc. SCAN has its own logging.
* This is for connection/beacon loss/session protection almost
* over debugging when trying to get into a stable RUN state.
*/
if (vif->cfg.assoc)
lvif->beacons++;
break;
default:
return;
}
lhw = ni->ni_ic->ic_softc;
hw = LHW_TO_HW(lhw);
/*
* If this direct call to mo_bss_info_changed will not work due to
* locking, see if queue_work() is fast enough.
*/
bss_changed = lkpi_update_dtim_tsf(vif, ni, ni->ni_vap, __func__, __LINE__);
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
}
/*
* Change link-layer address on the vif (if the vap is not started/"UP").
* This can happen if a user changes 'ether' using ifconfig.
* The code is based on net80211/ieee80211_freebsd.c::wlan_iflladdr() but
* we do use a per-[l]vif event handler to be sure we exist as we
* cannot assume that from every vap derives a vif and we have a hard
* time checking based on net80211 information.
* Should this ever become a real problem we could add a callback function
* to wlan_iflladdr() to be set optionally but that would be for a
* single-consumer (or needs a list) -- was just too complicated for an
* otherwise perfect mechanism FreeBSD already provides.
*/
static void
lkpi_vif_iflladdr(void *arg, struct ifnet *ifp)
{
struct epoch_tracker et;
struct ieee80211_vif *vif;
NET_EPOCH_ENTER(et);
/* NB: identify vap's by if_transmit; left as an extra check. */
if (if_gettransmitfn(ifp) != ieee80211_vap_transmit ||
(if_getflags(ifp) & IFF_UP) != 0) {
NET_EPOCH_EXIT(et);
return;
}
vif = arg;
IEEE80211_ADDR_COPY(vif->bss_conf.addr, if_getlladdr(ifp));
NET_EPOCH_EXIT(et);
}
static struct ieee80211vap *
lkpi_ic_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ],
int unit, enum ieee80211_opmode opmode, int flags,
const uint8_t bssid[IEEE80211_ADDR_LEN],
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211vap *vap;
struct ieee80211_vif *vif;
struct ieee80211_tx_queue_params txqp;
enum ieee80211_bss_changed changed;
struct sysctl_oid *node;
size_t len;
int error, i;
uint16_t ac;
if (!TAILQ_EMPTY(&ic->ic_vaps)) /* 1 so far. Add <n> once this works. */
return (NULL);
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
len = sizeof(*lvif);
len += hw->vif_data_size; /* vif->drv_priv */
lvif = malloc(len, M_80211_VAP, M_WAITOK | M_ZERO);
mtx_init(&lvif->mtx, "lvif", NULL, MTX_DEF);
TASK_INIT(&lvif->sw_scan_task, 0, lkpi_sw_scan_task, lvif);
INIT_LIST_HEAD(&lvif->lsta_list);
lvif->lvif_bss = NULL;
refcount_init(&lvif->nt_unlocked, 0);
lvif->lvif_bss_synched = false;
vap = LVIF_TO_VAP(lvif);
vif = LVIF_TO_VIF(lvif);
memcpy(vif->addr, mac, IEEE80211_ADDR_LEN);
vif->p2p = false;
vif->probe_req_reg = false;
vif->type = lkpi_opmode_to_vif_type(opmode);
lvif->wdev.iftype = vif->type;
/* Need to fill in other fields as well. */
IMPROVE();
/* XXX-BZ hardcoded for now! */
#if 1
RCU_INIT_POINTER(vif->bss_conf.chanctx_conf, NULL);
vif->bss_conf.vif = vif;
/* vap->iv_myaddr is not set until net80211::vap_setup or vap_attach. */
IEEE80211_ADDR_COPY(vif->bss_conf.addr, mac);
lvif->lvif_ifllevent = EVENTHANDLER_REGISTER(iflladdr_event,
lkpi_vif_iflladdr, vif, EVENTHANDLER_PRI_ANY);
vif->bss_conf.link_id = 0; /* Non-MLO operation. */
vif->bss_conf.chanreq.oper.width = NL80211_CHAN_WIDTH_20_NOHT;
vif->bss_conf.use_short_preamble = false; /* vap->iv_flags IEEE80211_F_SHPREAMBLE */
vif->bss_conf.use_short_slot = false; /* vap->iv_flags IEEE80211_F_SHSLOT */
vif->bss_conf.qos = false;
vif->bss_conf.use_cts_prot = false; /* vap->iv_protmode */
vif->bss_conf.ht_operation_mode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
vif->cfg.aid = 0;
vif->cfg.assoc = false;
vif->cfg.idle = true;
vif->cfg.ps = false;
IMPROVE("Check other fields and then figure out whats is left elsewhere of them");
/*
* We need to initialize it to something as the bss_info_changed call
* will try to copy from it in iwlwifi and NULL is a panic.
* We will set the proper one in scan_to_auth() before being assoc.
*/
vif->bss_conf.bssid = ieee80211broadcastaddr;
#endif
#if 0
vif->bss_conf.dtim_period = 0; /* IEEE80211_DTIM_DEFAULT ; must stay 0. */
IEEE80211_ADDR_COPY(vif->bss_conf.bssid, bssid);
vif->bss_conf.beacon_int = ic->ic_bintval;
/* iwlwifi bug. */
if (vif->bss_conf.beacon_int < 16)
vif->bss_conf.beacon_int = 16;
#endif
/* Link Config */
vif->link_conf[0] = &vif->bss_conf;
for (i = 0; i < nitems(vif->link_conf); i++) {
IMPROVE("more than 1 link one day");
}
/* Setup queue defaults; driver may override in (*add_interface). */
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
if (ieee80211_hw_check(hw, QUEUE_CONTROL))
vif->hw_queue[i] = IEEE80211_INVAL_HW_QUEUE;
else if (hw->queues >= IEEE80211_NUM_ACS)
vif->hw_queue[i] = i;
else
vif->hw_queue[i] = 0;
/* Initialize the queue to running. Stopped? */
lvif->hw_queue_stopped[i] = false;
}
vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
IMPROVE();
wiphy_lock(hw->wiphy);
error = lkpi_80211_mo_start(hw);
if (error != 0) {
wiphy_unlock(hw->wiphy);
ic_printf(ic, "%s: failed to start hw: %d\n", __func__, error);
mtx_destroy(&lvif->mtx);
free(lvif, M_80211_VAP);
return (NULL);
}
error = lkpi_80211_mo_add_interface(hw, vif);
if (error != 0) {
IMPROVE(); /* XXX-BZ mo_stop()? */
wiphy_unlock(hw->wiphy);
ic_printf(ic, "%s: failed to add interface: %d\n", __func__, error);
mtx_destroy(&lvif->mtx);
free(lvif, M_80211_VAP);
return (NULL);
}
wiphy_unlock(hw->wiphy);
LKPI_80211_LHW_LVIF_LOCK(lhw);
TAILQ_INSERT_TAIL(&lhw->lvif_head, lvif, lvif_entry);
LKPI_80211_LHW_LVIF_UNLOCK(lhw);
/* Set bss_info. */
changed = 0;
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
/* Configure tx queues (conf_tx), default WME & send BSS_CHANGED_QOS. */
IMPROVE("Hardcoded values; to fix see 802.11-2016, 9.4.2.29 EDCA Parameter Set element");
wiphy_lock(hw->wiphy);
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
bzero(&txqp, sizeof(txqp));
txqp.cw_min = 15;
txqp.cw_max = 1023;
txqp.txop = 0;
txqp.aifs = 2;
error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp);
if (error != 0)
ic_printf(ic, "%s: conf_tx ac %u failed %d\n",
__func__, ac, error);
}
wiphy_unlock(hw->wiphy);
changed = BSS_CHANGED_QOS;
lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
/* Force MC init. */
lkpi_update_mcast_filter(ic);
ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
/* Now we have a valid vap->iv_ifp. Any checksum offloading goes below. */
IMPROVE();
/* Override with LinuxKPI method so we can drive mac80211/cfg80211. */
lvif->iv_newstate = vap->iv_newstate;
vap->iv_newstate = lkpi_iv_newstate;
lvif->iv_update_bss = vap->iv_update_bss;
vap->iv_update_bss = lkpi_iv_update_bss;
lvif->iv_recv_mgmt = vap->iv_recv_mgmt;
vap->iv_recv_mgmt = lkpi_iv_sta_recv_mgmt;
#ifdef LKPI_80211_HW_CRYPTO
/* Key management. */
if (lkpi_hwcrypto && lhw->ops->set_key != NULL) {
vap->iv_key_set = lkpi_iv_key_set;
vap->iv_key_delete = lkpi_iv_key_delete;
vap->iv_key_update_begin = lkpi_iv_key_update_begin;
vap->iv_key_update_end = lkpi_iv_key_update_end;
}
#endif
#ifdef LKPI_80211_HT
/* Stay with the iv_ampdu_rxmax,limit / iv_ampdu_density defaults until later. */
#endif
ieee80211_ratectl_init(vap);
/* Complete setup. */
ieee80211_vap_attach(vap, ieee80211_media_change,
ieee80211_media_status, mac);
#ifdef LKPI_80211_HT
/*
* Modern chipset/fw/drv will do A-MPDU in drv/fw and fail
* to do so if they cannot do the crypto too.
*/
if (!lkpi_hwcrypto && IEEE80211_CONF_AMPDU_OFFLOAD(ic))
vap->iv_flags_ht &= ~IEEE80211_FHT_AMPDU_RX;
#endif
if (hw->max_listen_interval == 0)
hw->max_listen_interval = 7 * (ic->ic_lintval / ic->ic_bintval);
hw->conf.listen_interval = hw->max_listen_interval;
ic->ic_set_channel(ic);
/* XXX-BZ do we need to be able to update these? */
hw->wiphy->frag_threshold = vap->iv_fragthreshold;
lkpi_80211_mo_set_frag_threshold(hw, vap->iv_fragthreshold);
hw->wiphy->rts_threshold = vap->iv_rtsthreshold;
lkpi_80211_mo_set_rts_threshold(hw, vap->iv_rtsthreshold);
/* any others? */
/* Add per-VIF/VAP sysctls. */
sysctl_ctx_init(&lvif->sysctl_ctx);
node = SYSCTL_ADD_NODE(&lvif->sysctl_ctx,
SYSCTL_CHILDREN(&sysctl___compat_linuxkpi_80211),
OID_AUTO, if_name(vap->iv_ifp),
CTLFLAG_RD | CTLFLAG_SKIP | CTLFLAG_MPSAFE, NULL, "VIF Information");
SYSCTL_ADD_PROC(&lvif->sysctl_ctx,
SYSCTL_CHILDREN(node), OID_AUTO, "dump_stas",
CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, lvif, 0,
lkpi_80211_dump_stas, "A", "Dump sta statistics of this vif");
SYSCTL_ADD_PROC(&lvif->sysctl_ctx,
SYSCTL_CHILDREN(node), OID_AUTO, "dump_stas_queues",
CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_SKIP, lvif, 0,
lkpi_80211_dump_sta_queues, "A",
"Dump queue statistics for any sta of this vif");
IMPROVE();
return (vap);
}
void
linuxkpi_ieee80211_unregister_hw(struct ieee80211_hw *hw)
{
wiphy_unregister(hw->wiphy);
linuxkpi_ieee80211_ifdetach(hw);
IMPROVE();
}
void
linuxkpi_ieee80211_restart_hw(struct ieee80211_hw *hw)
{
TODO();
}
static void
lkpi_ic_vap_delete(struct ieee80211vap *vap)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
ic = vap->iv_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
EVENTHANDLER_DEREGISTER(iflladdr_event, lvif->lvif_ifllevent);
/* Clear up per-VIF/VAP sysctls. */
sysctl_ctx_free(&lvif->sysctl_ctx);
ieee80211_draintask(ic, &lvif->sw_scan_task);
LKPI_80211_LHW_LVIF_LOCK(lhw);
TAILQ_REMOVE(&lhw->lvif_head, lvif, lvif_entry);
LKPI_80211_LHW_LVIF_UNLOCK(lhw);
ieee80211_ratectl_deinit(vap);
ieee80211_vap_detach(vap);
IMPROVE("clear up other bits in this state");
lkpi_80211_mo_remove_interface(hw, vif);
/* Single VAP, so we can do this here. */
lkpi_80211_mo_stop(hw, false); /* XXX SUSPEND */
mtx_destroy(&lvif->mtx);
free(lvif, M_80211_VAP);
}
static void
lkpi_ic_update_mcast(struct ieee80211com *ic)
{
struct ieee80211vap *vap;
struct lkpi_hw *lhw;
lhw = ic->ic_softc;
LKPI_80211_LHW_MC_LOCK(lhw);
/* Cleanup anything on the current list. */
lkpi_cleanup_mcast_list_locked(lhw);
/* Build up the new list (or allmulti). */
if (ic->ic_allmulti == 0) {
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
if_foreach_llmaddr(vap->iv_ifp,
lkpi_ic_update_mcast_copy, &lhw->mc_list);
lhw->mc_all_multi = false;
} else {
lhw->mc_all_multi = true;
}
LKPI_80211_LHW_MC_UNLOCK(lhw);
lkpi_update_mcast_filter(ic);
TRACEOK();
}
static void
lkpi_ic_update_promisc(struct ieee80211com *ic)
{
UNIMPLEMENTED;
}
static void
lkpi_ic_update_chw(struct ieee80211com *ic)
{
UNIMPLEMENTED;
}
/* Start / stop device. */
static void
lkpi_ic_parent(struct ieee80211com *ic)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
#ifdef HW_START_STOP
int error;
#endif
bool start_all;
IMPROVE();
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
start_all = false;
/* IEEE80211_UNLOCK(ic); */
wiphy_lock(hw->wiphy);
if (ic->ic_nrunning > 0) {
#ifdef HW_START_STOP
error = lkpi_80211_mo_start(hw);
if (error == 0)
#endif
start_all = true;
} else {
#ifdef HW_START_STOP
lkpi_80211_mo_stop(hw, false); /* XXX SUSPEND */
#endif
}
wiphy_unlock(hw->wiphy);
/* IEEE80211_LOCK(ic); */
if (start_all)
ieee80211_start_all(ic);
}
bool
linuxkpi_ieee80211_is_ie_id_in_ie_buf(const u8 ie, const u8 *ie_ids,
size_t ie_ids_len)
{
int i;
for (i = 0; i < ie_ids_len; i++) {
if (ie == *ie_ids)
return (true);
}
return (false);
}
/* Return true if skipped; false if error. */
bool
linuxkpi_ieee80211_ie_advance(size_t *xp, const u8 *ies, size_t ies_len)
{
size_t x;
uint8_t l;
x = *xp;
KASSERT(x < ies_len, ("%s: x %zu ies_len %zu ies %p\n",
__func__, x, ies_len, ies));
l = ies[x + 1];
x += 2 + l;
if (x > ies_len)
return (false);
*xp = x;
return (true);
}
static uint8_t *
lkpi_scan_ies_add(uint8_t *p, struct ieee80211_scan_ies *scan_ies,
uint32_t band_mask, struct ieee80211vap *vap, struct ieee80211_hw *hw)
{
struct ieee80211_supported_band *supband;
struct linuxkpi_ieee80211_channel *channels;
struct ieee80211com *ic;
const struct ieee80211_channel *chan;
const struct ieee80211_rateset *rs;
uint8_t *pb;
int band, i;
ic = vap->iv_ic;
for (band = 0; band < NUM_NL80211_BANDS; band++) {
if ((band_mask & (1 << band)) == 0)
continue;
supband = hw->wiphy->bands[band];
/*
* This should not happen;
* band_mask is a bitmask of valid bands to scan on.
*/
if (supband == NULL || supband->n_channels == 0)
continue;
/* Find a first channel to get the mode and rates from. */
channels = supband->channels;
chan = NULL;
for (i = 0; i < supband->n_channels; i++) {
uint32_t flags;
if (channels[i].flags & IEEE80211_CHAN_DISABLED)
continue;
flags = 0;
switch (band) {
case NL80211_BAND_2GHZ:
flags |= IEEE80211_CHAN_G;
break;
case NL80211_BAND_5GHZ:
flags |= IEEE80211_CHAN_A;
break;
default:
panic("%s:%d: unupported band %d\n",
__func__, __LINE__, band);
}
chan = ieee80211_find_channel(ic,
channels[i].center_freq, flags);
if (chan != NULL)
break;
}
/* This really should not happen. */
if (chan == NULL)
continue;
pb = p;
rs = ieee80211_get_suprates(ic, chan); /* calls chan2mode */
p = ieee80211_add_rates(p, rs);
p = ieee80211_add_xrates(p, rs);
#if defined(LKPI_80211_HT)
if ((vap->iv_flags_ht & IEEE80211_FHT_HT) != 0) {
struct ieee80211_channel *c;
c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
vap->iv_flags_ht);
p = ieee80211_add_htcap_ch(p, vap, c);
}
#endif
#if defined(LKPI_80211_VHT)
if (band == NL80211_BAND_5GHZ &&
(vap->iv_vht_flags & IEEE80211_FVHT_VHT) != 0) {
struct ieee80211_channel *c;
c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
vap->iv_flags_ht);
c = ieee80211_vht_adjust_channel(ic, c,
vap->iv_vht_flags);
p = ieee80211_add_vhtcap_ch(p, vap, c);
}
#endif
scan_ies->ies[band] = pb;
scan_ies->len[band] = p - pb;
}
/* Add common_ies */
pb = p;
if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 &&
vap->iv_wpa_ie != NULL) {
memcpy(p, vap->iv_wpa_ie, 2 + vap->iv_wpa_ie[1]);
p += 2 + vap->iv_wpa_ie[1];
}
if (vap->iv_appie_probereq != NULL) {
memcpy(p, vap->iv_appie_probereq->ie_data,
vap->iv_appie_probereq->ie_len);
p += vap->iv_appie_probereq->ie_len;
}
scan_ies->common_ies = pb;
scan_ies->common_ie_len = p - pb;
return (p);
}
static void
lkpi_enable_hw_scan(struct lkpi_hw *lhw)
{
if (lhw->ops->hw_scan) {
/*
* Advertise full-offload scanning.
*
* Not limiting to SINGLE_SCAN_ON_ALL_BANDS here as otherwise
* we essentially disable hw_scan for all drivers not setting
* the flag.
*/
lhw->ic->ic_flags_ext |= IEEE80211_FEXT_SCAN_OFFLOAD;
lhw->scan_flags |= LKPI_LHW_SCAN_HW;
}
}
#ifndef LKPI_80211_USE_SCANLIST
static const uint32_t chan_pri[] = {
5180, 5500, 5745,
5260, 5580, 5660, 5825,
5220, 5300, 5540, 5620, 5700, 5785, 5865,
2437, 2412, 2422, 2462, 2472, 2432, 2452
};
static int
lkpi_scan_chan_list_idx(const struct linuxkpi_ieee80211_channel *lc)
{
int i;
for (i = 0; i < nitems(chan_pri); i++) {
if (lc->center_freq == chan_pri[i])
return (i);
}
return (-1);
}
static int
lkpi_scan_chan_list_comp(const struct linuxkpi_ieee80211_channel *lc1,
const struct linuxkpi_ieee80211_channel *lc2)
{
int idx1, idx2;
/* Find index in list. */
idx1 = lkpi_scan_chan_list_idx(lc1);
idx2 = lkpi_scan_chan_list_idx(lc2);
if (idx1 == -1 && idx2 != -1)
return (1);
if (idx1 != -1 && idx2 == -1)
return (-1);
/* Neither on the list, use center_freq. */
if (idx1 == -1 && idx2 == -1)
return (lc1->center_freq - lc2->center_freq);
/* Whichever is first in the list. */
return (idx1 - idx2);
}
static void
lkpi_scan_chan_list_resort(struct linuxkpi_ieee80211_channel **cpp, size_t nchan)
{
struct linuxkpi_ieee80211_channel *lc, *nc;
size_t i, j;
int rc;
for (i = (nchan - 1); i > 0; i--) {
for (j = i; j > 0 ; j--) {
lc = *(cpp + j);
nc = *(cpp + j - 1);
rc = lkpi_scan_chan_list_comp(lc, nc);
if (rc < 0) {
*(cpp + j) = nc;
*(cpp + j - 1) = lc;
}
}
}
}
static bool
lkpi_scan_chan(struct linuxkpi_ieee80211_channel *c,
struct ieee80211com *ic, bool log)
{
if ((c->flags & IEEE80211_CHAN_DISABLED) != 0) {
if (log)
TRACE_SCAN(ic, "Skipping disabled chan "
"on band %s [%#x/%u/%#x]",
lkpi_nl80211_band_name(c->band), c->hw_value,
c->center_freq, c->flags);
return (false);
}
if (isclr(ic->ic_chan_active, ieee80211_mhz2ieee(c->center_freq,
lkpi_nl80211_band_to_net80211_band(c->band)))) {
if (log)
TRACE_SCAN(ic, "Skipping !active chan "
"on band %s [%#x/%u/%#x]",
lkpi_nl80211_band_name(c->band), c->hw_value,
c->center_freq, c->flags);
return (false);
}
return (true);
}
#endif
static void
lkpi_ic_scan_start(struct ieee80211com *ic)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_scan_state *ss;
struct ieee80211vap *vap;
int error;
bool is_hw_scan;
lhw = ic->ic_softc;
ss = ic->ic_scan;
vap = ss->ss_vap;
TRACE_SCAN(ic, "scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS);
LKPI_80211_LHW_SCAN_LOCK(lhw);
if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) {
/* A scan is still running. */
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
TRACE_SCAN(ic, "Trying to start new scan while still running; "
"cancelling new net80211 scan; scan_flags %b",
lhw->scan_flags, LKPI_LHW_SCAN_BITS);
ieee80211_cancel_scan(vap);
return;
}
is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
#if 0
if (vap->iv_state != IEEE80211_S_SCAN) {
TODO("We need to be able to scan if not in S_SCAN");
TRACE_SCAN(ic, "scan_flags %b iv_state %d",
lhw->scan_flags, LKPI_LHW_SCAN_BITS, vap->iv_state);
ieee80211_cancel_scan(vap);
return;
}
#endif
hw = LHW_TO_HW(lhw);
if (!is_hw_scan) {
/* If hw_scan is cleared clear FEXT_SCAN_OFFLOAD too. */
vap->iv_flags_ext &= ~IEEE80211_FEXT_SCAN_OFFLOAD;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
if (vap->iv_state == IEEE80211_S_SCAN)
lkpi_hw_conf_idle(hw, false);
LKPI_80211_LHW_SCAN_LOCK(lhw);
lhw->scan_flags |= LKPI_LHW_SCAN_RUNNING;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
lkpi_update_mcast_filter(ic);
TRACE_SCAN(vap->iv_ic, "Starting SW_SCAN: scan_flags %b",
lhw->scan_flags, LKPI_LHW_SCAN_BITS);
lkpi_80211_mo_sw_scan_start(hw, vif, vif->addr);
/* net80211::scan_start() handled PS for us. */
IMPROVE();
/* XXX Also means it is too late to flush queues?
* need to check iv_sta_ps or overload? */
/* XXX want to adjust ss end time/ maxdwell? */
} else {
struct ieee80211_scan_request *hw_req;
struct linuxkpi_ieee80211_channel *lc, **cpp;
struct cfg80211_ssid *ssids;
struct cfg80211_scan_6ghz_params *s6gp;
size_t chan_len, nchan, ssids_len, s6ghzlen;
int band, i, ssid_count, common_ie_len;
#ifndef LKPI_80211_USE_SCANLIST
int n;
#endif
uint32_t band_mask;
uint8_t *ie, *ieend;
bool running;
ssid_count = min(ss->ss_nssid, hw->wiphy->max_scan_ssids);
ssids_len = ssid_count * sizeof(*ssids);
s6ghzlen = 0 * (sizeof(*s6gp)); /* XXX-BZ */
band_mask = 0;
nchan = 0;
if (ieee80211_hw_check(hw, SINGLE_SCAN_ON_ALL_BANDS)) {
#ifdef LKPI_80211_USE_SCANLIST
/* Avoid net80211 scan lists until it has proper scan offload support. */
for (i = ss->ss_next; i < ss->ss_last; i++) {
nchan++;
band = lkpi_net80211_chan_to_nl80211_band(
ss->ss_chans[ss->ss_next + i]);
band_mask |= (1 << band);
}
#else
/* Instead we scan for all channels all the time. */
for (band = 0; band < NUM_NL80211_BANDS; band++) {
switch (band) {
case NL80211_BAND_2GHZ:
case NL80211_BAND_5GHZ:
break;
default:
continue;
}
if (hw->wiphy->bands[band] != NULL) {
struct linuxkpi_ieee80211_channel *channels;
int n;
band_mask |= (1 << band);
channels = hw->wiphy->bands[band]->channels;
n = hw->wiphy->bands[band]->n_channels;
for (i = 0; i < n; i++) {
if (lkpi_scan_chan(&channels[i], ic, true))
nchan++;
}
}
}
#endif
} else {
IMPROVE("individual band scans not yet supported, only scanning first band");
/* In theory net80211 should drive this. */
/* Probably we need to add local logic for now;
* need to deal with scan_complete
* and cancel_scan and keep local state.
* Also cut the nchan down above.
*/
/* XXX-BZ ath10k does not set this but still does it? &$%^ */
}
chan_len = nchan * (sizeof(lc) + sizeof(*lc));
common_ie_len = 0;
if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 &&
vap->iv_wpa_ie != NULL)
common_ie_len += vap->iv_wpa_ie[1];
if (vap->iv_appie_probereq != NULL)
common_ie_len += vap->iv_appie_probereq->ie_len;
/* We would love to check this at an earlier stage... */
if (common_ie_len > hw->wiphy->max_scan_ie_len) {
ic_printf(ic, "WARNING: %s: common_ie_len %d > "
"wiphy->max_scan_ie_len %d\n", __func__,
common_ie_len, hw->wiphy->max_scan_ie_len);
}
hw_req = malloc(sizeof(*hw_req) + ssids_len +
s6ghzlen + chan_len + lhw->supbands * lhw->scan_ie_len +
common_ie_len, M_LKPI80211, M_WAITOK | M_ZERO);
hw_req->req.flags = 0; /* XXX ??? */
/* hw_req->req.wdev */
hw_req->req.wiphy = hw->wiphy;
hw_req->req.no_cck = false; /* XXX */
/*
* In general setting duration[_mandatory] seems to pessimise
* default scanning behaviour. We only use it for BGSCANnig
* to keep the dwell times small.
* Setting duration_mandatory makes this the maximum dwell
* time (otherwise may be shorter). Duration is in TU.
*/
if ((ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) != 0) {
unsigned long dwell;
if ((ic->ic_caps & IEEE80211_C_BGSCAN) == 0 ||
(vap->iv_flags & IEEE80211_F_BGSCAN) == 0)
ic_printf(ic, "BGSCAN despite off: %b, %b, %b\n",
ic->ic_flags_ext, IEEE80211_FEXT_BITS,
vap->iv_flags, IEEE80211_F_BITS,
ic->ic_caps, IEEE80211_C_BITS);
dwell = ss->ss_mindwell;
if (dwell == 0)
dwell = msecs_to_ticks(20);
hw_req->req.duration_mandatory = true;
hw_req->req.duration = TICKS_2_USEC(dwell) / 1024;
}
#ifdef __notyet__
hw_req->req.flags |= NL80211_SCAN_FLAG_RANDOM_ADDR;
memcpy(hw_req->req.mac_addr, xxx, IEEE80211_ADDR_LEN);
memset(hw_req->req.mac_addr_mask, 0xxx, IEEE80211_ADDR_LEN);
#endif
eth_broadcast_addr(hw_req->req.bssid);
hw_req->req.n_channels = nchan;
cpp = (struct linuxkpi_ieee80211_channel **)(hw_req + 1);
lc = (struct linuxkpi_ieee80211_channel *)(cpp + nchan);
#ifdef LKPI_80211_USE_SCANLIST
for (i = 0; i < nchan; i++) {
*(cpp + i) =
(struct linuxkpi_ieee80211_channel *)(lc + i);
}
/* Avoid net80211 scan lists until it has proper scan offload support. */
for (i = 0; i < nchan; i++) {
struct ieee80211_channel *c;
c = ss->ss_chans[ss->ss_next + i];
lc->center_freq = c->ic_freq; /* XXX */
/* lc->flags */
lc->band = lkpi_net80211_chan_to_nl80211_band(c);
lc->max_power = c->ic_maxpower;
/* lc-> ... */
lc++;
}
#else
/* Add bands in reverse order for scanning. */
n = 0;
for (band = NUM_NL80211_BANDS - 1; band >= 0; band--) {
struct ieee80211_supported_band *supband;
struct linuxkpi_ieee80211_channel *channels;
/* Band disabled for scanning? */
if ((band_mask & (1 << band)) == 0)
continue;
/* Nothing to scan in band? */
supband = hw->wiphy->bands[band];
if (supband == NULL || supband->n_channels == 0)
continue;
channels = supband->channels;
for (i = 0; i < supband->n_channels; i++) {
if (lkpi_scan_chan(&channels[i], ic, false))
*(cpp + n++) = &channels[i];
}
}
if (lkpi_order_scanlist)
lkpi_scan_chan_list_resort(cpp, nchan);
if ((linuxkpi_debug_80211 & D80211_SCAN) != 0) {
printf("%s:%d: %s SCAN Channel List (nchan=%zu): ",
__func__, __LINE__, ic->ic_name, nchan);
for (i = 0; i < nchan; i++) {
struct linuxkpi_ieee80211_channel *xc;
xc = *(cpp + i);
printf(" %d(%d)",
ieee80211_mhz2ieee(xc->center_freq,
lkpi_nl80211_band_to_net80211_band(
xc->band)),
xc->center_freq);
}
printf("\n");
}
#endif
hw_req->req.n_ssids = ssid_count;
if (hw_req->req.n_ssids > 0) {
ssids = (struct cfg80211_ssid *)lc;
hw_req->req.ssids = ssids;
for (i = 0; i < ssid_count; i++) {
ssids->ssid_len = ss->ss_ssid[i].len;
memcpy(ssids->ssid, ss->ss_ssid[i].ssid,
ss->ss_ssid[i].len);
ssids++;
}
s6gp = (struct cfg80211_scan_6ghz_params *)ssids;
} else {
s6gp = (struct cfg80211_scan_6ghz_params *)lc;
}
/* 6GHz one day. */
hw_req->req.n_6ghz_params = 0;
hw_req->req.scan_6ghz_params = NULL;
hw_req->req.scan_6ghz = false; /* Weird boolean; not what you think. */
/* s6gp->... */
ie = ieend = (uint8_t *)s6gp;
/* Copy per-band IEs, copy common IEs */
ieend = lkpi_scan_ies_add(ie, &hw_req->ies, band_mask, vap, hw);
hw_req->req.ie = ie;
hw_req->req.ie_len = ieend - ie;
hw_req->req.scan_start = jiffies;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
LKPI_80211_LHW_SCAN_LOCK(lhw);
/* Re-check under lock. */
running = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
if (!running) {
KASSERT(lhw->hw_req == NULL, ("%s: ic %p lhw %p hw_req %p "
"!= NULL\n", __func__, ic, lhw, lhw->hw_req));
lhw->scan_flags |= LKPI_LHW_SCAN_RUNNING;
lhw->hw_req = hw_req;
}
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
if (running) {
free(hw_req, M_LKPI80211);
TRACE_SCAN(ic, "Trying to start new scan while still "
"running (2); cancelling new net80211 scan; "
"scan_flags %b",
lhw->scan_flags, LKPI_LHW_SCAN_BITS);
ieee80211_cancel_scan(vap);
return;
}
lkpi_update_mcast_filter(ic);
TRACE_SCAN(ic, "Starting HW_SCAN: scan_flags %b, "
"ie_len %d, n_ssids %d, n_chan %d, common_ie_len %d [%d, %d]",
lhw->scan_flags, LKPI_LHW_SCAN_BITS, hw_req->req.ie_len,
hw_req->req.n_ssids, hw_req->req.n_channels,
hw_req->ies.common_ie_len,
hw_req->ies.len[NL80211_BAND_2GHZ],
hw_req->ies.len[NL80211_BAND_5GHZ]);
error = lkpi_80211_mo_hw_scan(hw, vif, hw_req);
if (error != 0) {
bool scan_done;
int e;
TRACE_SCAN(ic, "hw_scan failed; scan_flags %b, error %d",
lhw->scan_flags, LKPI_LHW_SCAN_BITS, error);
ieee80211_cancel_scan(vap);
/*
* ieee80211_scan_completed must be called in either
* case of error or none. So let the free happen there
* and only there.
* That would be fine in theory but in practice drivers
* behave differently:
* ath10k does not return hw_scan until after scan_complete
* and can then still return an error.
* rtw88 can return 1 or -EBUSY without scan_complete
* iwlwifi can return various errors before scan starts
* ...
* So we cannot rely on that behaviour and have to check
* and balance between both code paths.
*/
e = 0;
scan_done = true;
LKPI_80211_LHW_SCAN_LOCK(lhw);
if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) {
free(lhw->hw_req, M_LKPI80211);
lhw->hw_req = NULL;
/*
* The ieee80211_cancel_scan() above runs in a
* taskq and it may take ages for the previous
* scan to clear; starting a new one right away
* we run into the problem that the old one is
* still active.
*/
e = msleep(lhw, &lhw->scan_mtx, 0, "lhwscanstop", hz);
scan_done = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
/*
* Now we can clear running if no one else did.
*/
lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING;
}
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
lkpi_update_mcast_filter(ic);
if (!scan_done) {
ic_printf(ic, "ERROR: %s: timeout/error to wait "
"for ieee80211_cancel_scan: %d\n", __func__, e);
return;
}
/*
* XXX-SIGH magic number.
* rtw88 has a magic "return 1" if offloading scan is
* not possible. Fall back to sw scan in that case.
*/
if (error == 1) {
/*
* We need to put this into some defered context
* the net80211 scan may not be done yet
* (ic_flags & IEEE80211_F_SCAN) and we cannot
* wait here; if we do scan_curchan_task always
* runs after our timeout to finalize the scan.
*/
ieee80211_runtask(ic, &lvif->sw_scan_task);
return;
}
ic_printf(ic, "ERROR: %s: hw_scan returned %d\n",
__func__, error);
}
}
}
static void
lkpi_sw_scan_task(void *arg, int pending __unused)
{
struct lkpi_hw *lhw;
struct lkpi_vif *lvif;
struct ieee80211vap *vap;
struct ieee80211_scan_state *ss;
lvif = arg;
vap = LVIF_TO_VAP(lvif);
lhw = vap->iv_ic->ic_softc;
ss = vap->iv_ic->ic_scan;
LKPI_80211_LHW_SCAN_LOCK(lhw);
/*
* We will re-enable this at scan_end calling lkpi_enable_hw_scan().
* IEEE80211_FEXT_SCAN_OFFLOAD will be cleared by lkpi_ic_scan_start.
*/
lhw->scan_flags &= ~LKPI_LHW_SCAN_HW;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
TRACE_SCAN(vap->iv_ic, "Triggering SW_SCAN: pending %d, scan_flags %b",
pending, lhw->scan_flags, LKPI_LHW_SCAN_BITS);
/*
* This will call ic_scan_start() and we will get into the right path
* unless other scans started in between.
*/
ieee80211_start_scan(vap,
IEEE80211_SCAN_ONCE,
msecs_to_ticks(10000), /* 10000 ms (=~ 50 chan * 200 ms) */
ss->ss_mindwell ? ss->ss_mindwell : msecs_to_ticks(20),
ss->ss_maxdwell ? ss->ss_maxdwell : msecs_to_ticks(200),
vap->iv_des_nssid, vap->iv_des_ssid);
}
static void
lkpi_ic_scan_end(struct ieee80211com *ic)
{
struct lkpi_hw *lhw;
bool is_hw_scan;
lhw = ic->ic_softc;
TRACE_SCAN(ic, "scan_flags %b", lhw->scan_flags, LKPI_LHW_SCAN_BITS);
LKPI_80211_LHW_SCAN_LOCK(lhw);
if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) == 0) {
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
return;
}
is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
if (!is_hw_scan) {
struct ieee80211_scan_state *ss;
struct ieee80211vap *vap;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
ss = ic->ic_scan;
vap = ss->ss_vap;
hw = LHW_TO_HW(lhw);
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
lkpi_80211_mo_sw_scan_complete(hw, vif);
/* Send PS to stop buffering if n80211 does not for us? */
if (vap->iv_state == IEEE80211_S_SCAN)
lkpi_hw_conf_idle(hw, true);
}
/*
* In case we disabled the hw_scan in lkpi_ic_scan_start() and
* switched to swscan, re-enable hw_scan if available.
*/
lkpi_enable_hw_scan(lhw);
LKPI_80211_LHW_SCAN_LOCK(lhw);
wakeup(lhw);
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
}
static void
lkpi_ic_scan_curchan(struct ieee80211_scan_state *ss,
unsigned long maxdwell)
{
struct lkpi_hw *lhw;
bool is_hw_scan;
lhw = ss->ss_ic->ic_softc;
TRACE_SCAN(ss->ss_ic, "scan_flags %b chan %d maxdwell %lu",
lhw->scan_flags, LKPI_LHW_SCAN_BITS,
ss->ss_ic->ic_curchan->ic_ieee, maxdwell);
LKPI_80211_LHW_SCAN_LOCK(lhw);
is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
if (!is_hw_scan)
lhw->ic_scan_curchan(ss, maxdwell);
}
static void
lkpi_ic_scan_mindwell(struct ieee80211_scan_state *ss)
{
struct lkpi_hw *lhw;
bool is_hw_scan;
lhw = ss->ss_ic->ic_softc;
TRACE_SCAN(ss->ss_ic, "scan_flags %b chan %d mindwell %lu",
lhw->scan_flags, LKPI_LHW_SCAN_BITS,
ss->ss_ic->ic_curchan->ic_ieee, ss->ss_mindwell);
LKPI_80211_LHW_SCAN_LOCK(lhw);
is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
if (!is_hw_scan)
lhw->ic_scan_mindwell(ss);
}
static void
lkpi_ic_set_channel(struct ieee80211com *ic)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct ieee80211_channel *c;
struct linuxkpi_ieee80211_channel *chan;
int error;
bool hw_scan_running;
lhw = ic->ic_softc;
/* If we do not support (*config)() save us the work. */
if (lhw->ops->config == NULL)
return;
/* If we have a hw_scan running do not switch channels. */
LKPI_80211_LHW_SCAN_LOCK(lhw);
hw_scan_running =
(lhw->scan_flags & (LKPI_LHW_SCAN_RUNNING|LKPI_LHW_SCAN_HW)) ==
(LKPI_LHW_SCAN_RUNNING|LKPI_LHW_SCAN_HW);
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
if (hw_scan_running)
return;
c = ic->ic_curchan;
if (c == NULL || c == IEEE80211_CHAN_ANYC) {
ic_printf(ic, "%s: c %p ops->config %p\n", __func__,
c, lhw->ops->config);
return;
}
chan = lkpi_find_lkpi80211_chan(lhw, c);
if (chan == NULL) {
ic_printf(ic, "%s: c %p chan %p\n", __func__,
c, chan);
return;
}
/* XXX max power for scanning? */
IMPROVE();
hw = LHW_TO_HW(lhw);
cfg80211_chandef_create(&hw->conf.chandef, chan,
#ifdef LKPI_80211_HT
(ic->ic_flags_ht & IEEE80211_FHT_HT) ? NL80211_CHAN_HT20 :
#endif
NL80211_CHAN_NO_HT);
error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_CHANNEL);
if (error != 0 && error != EOPNOTSUPP) {
ic_printf(ic, "ERROR: %s: config %#0x returned %d\n",
__func__, IEEE80211_CONF_CHANGE_CHANNEL, error);
/* XXX should we unroll to the previous chandef? */
IMPROVE();
} else {
/* Update radiotap channels as well. */
lhw->rtap_tx.wt_chan_freq = htole16(c->ic_freq);
lhw->rtap_tx.wt_chan_flags = htole16(c->ic_flags);
lhw->rtap_rx.wr_chan_freq = htole16(c->ic_freq);
lhw->rtap_rx.wr_chan_flags = htole16(c->ic_flags);
}
/* Currently PS is hard coded off! Not sure it belongs here. */
IMPROVE();
if (ieee80211_hw_check(hw, SUPPORTS_PS) &&
(hw->conf.flags & IEEE80211_CONF_PS) != 0) {
hw->conf.flags &= ~IEEE80211_CONF_PS;
error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_PS);
if (error != 0 && error != EOPNOTSUPP)
ic_printf(ic, "ERROR: %s: config %#0x returned "
"%d\n", __func__, IEEE80211_CONF_CHANGE_PS,
error);
}
}
static struct ieee80211_node *
lkpi_ic_node_alloc(struct ieee80211vap *vap,
const uint8_t mac[IEEE80211_ADDR_LEN])
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_node *ni;
struct ieee80211_hw *hw;
struct lkpi_sta *lsta;
ic = vap->iv_ic;
lhw = ic->ic_softc;
/* We keep allocations de-coupled so we can deal with the two worlds. */
if (lhw->ic_node_alloc == NULL)
return (NULL);
ni = lhw->ic_node_alloc(vap, mac);
if (ni == NULL)
return (NULL);
hw = LHW_TO_HW(lhw);
lsta = lkpi_lsta_alloc(vap, mac, hw, ni);
if (lsta == NULL) {
if (lhw->ic_node_free != NULL)
lhw->ic_node_free(ni);
return (NULL);
}
return (ni);
}
static int
lkpi_ic_node_init(struct ieee80211_node *ni)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
int error;
ic = ni->ni_ic;
lhw = ic->ic_softc;
if (lhw->ic_node_init != NULL) {
error = lhw->ic_node_init(ni);
if (error != 0)
return (error);
}
/* XXX-BZ Sync other state over. */
IMPROVE();
return (0);
}
static void
lkpi_ic_node_cleanup(struct ieee80211_node *ni)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
ic = ni->ni_ic;
lhw = ic->ic_softc;
/* XXX-BZ remove from driver, ... */
IMPROVE();
if (lhw->ic_node_cleanup != NULL)
lhw->ic_node_cleanup(ni);
}
static void
lkpi_ic_node_free(struct ieee80211_node *ni)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct lkpi_sta *lsta;
ic = ni->ni_ic;
lhw = ic->ic_softc;
lsta = ni->ni_drv_data;
/* KASSERT lsta is not NULL here. Print ni/ni__refcnt. */
/*
* Pass in the original ni just in case of error we could check that
* it is the same as lsta->ni.
*/
lkpi_lsta_free(lsta, ni);
if (lhw->ic_node_free != NULL)
lhw->ic_node_free(ni);
}
/*
* lkpi_xmit() called from both the (*ic_raw_xmit) as well as the (*ic_transmit)
* call path.
* Unfortunately they have slightly different invariants. See
* ieee80211_raw_output() and ieee80211_parent_xmitpkt().
* Both take care of the ni reference in case of error, and otherwise during
* the callback after transmit.
* The difference is that in case of error (*ic_raw_xmit) needs us to release
* the mbuf, while (*ic_transmit) will free the mbuf itself.
*/
static int
lkpi_xmit(struct ieee80211_node *ni, struct mbuf *m,
const struct ieee80211_bpf_params *params __unused,
bool freem)
{
struct lkpi_sta *lsta;
int error;
lsta = ni->ni_drv_data;
LKPI_80211_LSTA_TXQ_LOCK(lsta);
#if 0
if (!lsta->added_to_drv || !lsta->txq_ready) {
#else
/*
* Backout this part of 886653492945f which breaks rtw88 or
* in general drivers without (*sta_state)() but only the
* legacy fallback to (*sta_add)().
*/
if (!lsta->txq_ready) {
#endif
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
if (freem)
m_free(m);
return (ENETDOWN);
}
/* Queue the packet and enqueue the task to handle it. */
error = mbufq_enqueue(&lsta->txq, m);
if (error != 0) {
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
if (freem)
m_free(m);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX)
ic_printf(ni->ni_ic, "%s: mbufq_enqueue failed: %d\n",
__func__, error);
#endif
return (ENETDOWN);
}
taskqueue_enqueue(taskqueue_thread, &lsta->txq_task);
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX)
printf("%s:%d lsta %p ni %p %6D mbuf_qlen %d\n",
__func__, __LINE__, lsta, ni, ni->ni_macaddr, ":",
mbufq_len(&lsta->txq));
#endif
return (0);
}
static int
lkpi_ic_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
const struct ieee80211_bpf_params *params __unused)
{
return (lkpi_xmit(ni, m, NULL, true));
}
#ifdef LKPI_80211_HW_CRYPTO
/*
* This is a bit of a hack given we know we are operating on a
* single frame and we know that hardware will deal with it.
* But otherwise the enmic bit and the encrypt bit need to be
* decoupled.
*/
static int
lkpi_hw_crypto_prepare_tkip(struct ieee80211_key *k,
struct ieee80211_key_conf *kc, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
uint32_t hlen, hdrlen;
uint8_t *p;
/*
* TKIP only happens on data.
*/
hdr = (void *)skb->data;
if (!ieee80211_is_data_present(hdr->frame_control))
return (0);
/*
* "enmic" (though we do not do that).
*/
/* any conditions to not apply this? */
if (skb_tailroom(skb) < k->wk_cipher->ic_miclen)
return (ENOBUFS);
p = skb_put(skb, k->wk_cipher->ic_miclen);
if ((kc->flags & IEEE80211_KEY_FLAG_PUT_MIC_SPACE) != 0)
goto encrypt;
/*
* (*enmic) which we hopefully do not have to do with hw accel.
* That means if we make it here we have a problem.
*/
TODO("(*enmic)");
return (ENXIO);
encrypt:
/*
* "encrypt" (though we do not do that).
*/
/*
* Check if we have anything to do as requested by driver
* or if we are done?
*/
if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) == 0 &&
(kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0)
return (0);
hlen = k->wk_cipher->ic_header;
if (skb_headroom(skb) < hlen)
return (ENOBUFS);
hdr = (void *)skb->data;
hdrlen = ieee80211_hdrlen(hdr->frame_control);
p = skb_push(skb, hlen);
memmove(p, p + hlen, hdrlen);
/* If driver request space only we are done. */
if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) != 0)
return (0);
p += hdrlen;
k->wk_cipher->ic_setiv(k, p);
/* If we make it hear we do sw encryption. */
TODO("sw encrypt");
return (ENXIO);
}
static int
lkpi_hw_crypto_prepare_ccmp(struct ieee80211_key *k,
struct ieee80211_key_conf *kc, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
uint32_t hlen, hdrlen;
uint8_t *p;
hdr = (void *)skb->data;
/*
* Check if we have anythig to do as requested by driver
* or if we are done?
*/
if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) == 0 &&
(kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV) == 0 &&
/* MFP */
!((kc->flags & IEEE80211_KEY_FLAG_GENERATE_IV_MGMT) != 0 &&
ieee80211_is_mgmt(hdr->frame_control)))
return (0);
hlen = k->wk_cipher->ic_header;
if (skb_headroom(skb) < hlen)
return (ENOBUFS);
hdrlen = ieee80211_hdrlen(hdr->frame_control);
p = skb_push(skb, hlen);
memmove(p, p + hlen, hdrlen);
/* If driver request space only we are done. */
if ((kc->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE) != 0)
return (0);
p += hdrlen;
k->wk_cipher->ic_setiv(k, p);
return (0);
}
static int
lkpi_hw_crypto_prepare(struct lkpi_sta *lsta, struct ieee80211_key *k,
struct sk_buff *skb)
{
struct ieee80211_tx_info *info;
struct ieee80211_key_conf *kc;
KASSERT(lsta != NULL, ("%s: lsta is NULL", __func__));
KASSERT(k != NULL, ("%s: key is NULL", __func__));
KASSERT(skb != NULL, ("%s: skb is NULL", __func__));
kc = lsta->kc[k->wk_keyix];
info = IEEE80211_SKB_CB(skb);
info->control.hw_key = kc;
/* MUST NOT happen. KASSERT? */
if (kc == NULL) {
ic_printf(lsta->ni->ni_ic, "%s: lsta %p k %p skb %p, "
"kc is NULL on hw crypto offload\n", __func__, lsta, k, skb);
return (ENXIO);
}
switch (kc->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
return (lkpi_hw_crypto_prepare_tkip(k, kc, skb));
case WLAN_CIPHER_SUITE_CCMP:
return (lkpi_hw_crypto_prepare_ccmp(k, kc, skb));
case WLAN_CIPHER_SUITE_GCMP:
return (lkpi_hw_crypto_prepare_ccmp(k, kc, skb));
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
case WLAN_CIPHER_SUITE_CCMP_256:
case WLAN_CIPHER_SUITE_GCMP_256:
case WLAN_CIPHER_SUITE_AES_CMAC:
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
default:
ic_printf(lsta->ni->ni_ic, "%s: lsta %p k %p kc %p skb %p, "
"unsupported cipher suite %u (%s)\n", __func__, lsta, k, kc,
skb, kc->cipher, lkpi_cipher_suite_to_name(kc->cipher));
return (EOPNOTSUPP);
}
}
static uint8_t
lkpi_hw_crypto_tailroom(struct lkpi_sta *lsta, struct ieee80211_key *k)
{
struct ieee80211_key_conf *kc;
kc = lsta->kc[k->wk_keyix];
if (kc == NULL)
return (0);
IMPROVE("which other flags need tailroom?");
if (kc->flags & (IEEE80211_KEY_FLAG_PUT_MIC_SPACE))
return (32); /* Large enough to hold everything and pow2. */
return (0);
}
#endif
static void
lkpi_80211_txq_tx_one(struct lkpi_sta *lsta, struct mbuf *m)
{
struct ieee80211_node *ni;
struct ieee80211_frame *wh;
struct ieee80211_key *k;
struct sk_buff *skb;
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_channel *c;
struct ieee80211_tx_control control;
struct ieee80211_tx_info *info;
struct ieee80211_sta *sta;
struct ieee80211_hdr *hdr;
struct lkpi_txq *ltxq;
void *buf;
ieee80211_keyix keyix;
uint8_t ac, tid, tailroom;
M_ASSERTPKTHDR(m);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX_DUMP)
hexdump(mtod(m, const void *), m->m_len, "RAW TX (plain) ", 0);
#endif
ni = lsta->ni;
ieee80211_output_seqno_assign(ni, -1, m);
k = NULL;
keyix = IEEE80211_KEYIX_NONE;
wh = mtod(m, struct ieee80211_frame *);
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
#ifdef LKPI_80211_HW_CRYPTO
if (lkpi_hwcrypto) {
k = ieee80211_crypto_get_txkey(ni, m);
if (k != NULL && lsta->kc[k->wk_keyix] != NULL)
keyix = k->wk_keyix;
}
#endif
/* Encrypt the frame if need be. */
if (keyix == IEEE80211_KEYIX_NONE) {
/* Retrieve key for TX && do software encryption. */
k = ieee80211_crypto_encap(ni, m);
if (k == NULL) {
ieee80211_free_node(ni);
m_freem(m);
return;
}
}
}
ic = ni->ni_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
c = ni->ni_chan;
if (ieee80211_radiotap_active_vap(ni->ni_vap)) {
struct lkpi_radiotap_tx_hdr *rtap;
rtap = &lhw->rtap_tx;
rtap->wt_flags = 0;
if (k != NULL)
rtap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
if (m->m_flags & M_FRAG)
rtap->wt_flags |= IEEE80211_RADIOTAP_F_FRAG;
IMPROVE();
rtap->wt_rate = 0;
if (c != NULL && c != IEEE80211_CHAN_ANYC) {
rtap->wt_chan_freq = htole16(c->ic_freq);
rtap->wt_chan_flags = htole16(c->ic_flags);
}
ieee80211_radiotap_tx(ni->ni_vap, m);
}
#ifdef LKPI_80211_HW_CRYPTO
if (lkpi_hwcrypto && keyix != IEEE80211_KEYIX_NONE)
tailroom = lkpi_hw_crypto_tailroom(lsta, k);
else
#endif
tailroom = 0;
/*
* net80211 should handle hw->extra_tx_headroom.
* Though for as long as we are copying we don't mind.
* XXX-BZ rtw88 asks for too much headroom for ipv6+tcp:
* https://lists.freebsd.org/archives/freebsd-transport/2022-February/000012.html
*/
skb = dev_alloc_skb(hw->extra_tx_headroom + tailroom + m->m_pkthdr.len);
if (skb == NULL) {
static uint8_t skb_alloc_failures = 0;
if (skb_alloc_failures++ == 0) {
int tid;
sta = LSTA_TO_STA(lsta);
ic_printf(ic, "ERROR %s: skb alloc failed %d + %d, lsta %p sta %p ni %p\n",
__func__, hw->extra_tx_headroom, m->m_pkthdr.len, lsta, sta, ni);
for (tid = 0; tid < nitems(sta->txq); tid++) {
if (sta->txq[tid] == NULL)
continue;
ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
ic_printf(ic, " tid %d ltxq %p seen_dequeue %d stopped %d skb_queue_len %u\n",
tid, ltxq, ltxq->seen_dequeue, ltxq->stopped, skb_queue_len(&ltxq->skbq));
}
}
ieee80211_free_node(ni);
m_freem(m);
return;
}
skb_reserve(skb, hw->extra_tx_headroom);
/* XXX-BZ we need a SKB version understanding mbuf. */
/* Save the mbuf for ieee80211_tx_complete(). */
skb->m_free_func = lkpi_ieee80211_free_skb_mbuf;
skb->m = m;
#if 0
skb_put_data(skb, m->m_data, m->m_pkthdr.len);
#else
buf = skb_put(skb, m->m_pkthdr.len);
m_copydata(m, 0, m->m_pkthdr.len, buf);
#endif
/* Save the ni. */
m->m_pkthdr.PH_loc.ptr = ni;
lvif = VAP_TO_LVIF(ni->ni_vap);
vif = LVIF_TO_VIF(lvif);
hdr = (void *)skb->data;
tid = linuxkpi_ieee80211_get_tid(hdr, true);
if (tid == IEEE80211_NONQOS_TID) { /* == IEEE80211_NUM_TIDS */
if (!ieee80211_is_data(hdr->frame_control)) {
/* MGMT and CTRL frames go on TID 7/VO. */
skb->priority = 7;
ac = IEEE80211_AC_VO;
} else {
/* Other non-QOS traffic goes to BE. */
/* Contrary to net80211 we MUST NOT promote M_EAPOL. */
skb->priority = 0;
ac = IEEE80211_AC_BE;
}
} else {
skb->priority = tid & IEEE80211_QOS_CTL_TID_MASK;
ac = ieee80211e_up_to_ac[tid & 7];
}
skb_set_queue_mapping(skb, ac);
info = IEEE80211_SKB_CB(skb);
info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
/* Slight delay; probably only happens on scanning so fine? */
if (c == NULL || c == IEEE80211_CHAN_ANYC)
c = ic->ic_curchan;
info->band = lkpi_net80211_chan_to_nl80211_band(c);
info->hw_queue = vif->hw_queue[ac];
if ((m->m_flags & M_EAPOL) != 0) {
info->control.flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO;
info->flags |= IEEE80211_TX_CTL_USE_MINRATE; /* mt76 */
}
info->control.vif = vif;
/* XXX-BZ info->control.rates */
#ifdef __notyet__
#ifdef LKPI_80211_HT
info->control.rts_cts_rate_idx=
info->control.use_rts= /* RTS */
info->control.use_cts_prot= /* RTS/CTS*/
#endif
#endif
sta = LSTA_TO_STA(lsta);
#ifdef LKPI_80211_HW_CRYPTO
if (lkpi_hwcrypto && keyix != IEEE80211_KEYIX_NONE) {
int error;
error = lkpi_hw_crypto_prepare(lsta, k, skb);
if (error != 0) {
/*
* We only have to free the skb which will free the
* mbuf and release the reference on the ni.
*/
dev_kfree_skb(skb);
return;
}
/* Reset header as data might have moved. */
hdr = (void *)skb->data;
}
#endif
IMPROVE();
ltxq = NULL;
if (!ieee80211_is_data_present(hdr->frame_control)) {
if (vif->type == NL80211_IFTYPE_STATION &&
lsta->added_to_drv &&
sta->txq[IEEE80211_NUM_TIDS] != NULL)
ltxq = TXQ_TO_LTXQ(sta->txq[IEEE80211_NUM_TIDS]);
} else if (lsta->added_to_drv &&
sta->txq[skb->priority] != NULL) {
ltxq = TXQ_TO_LTXQ(sta->txq[skb->priority]);
}
if (ltxq == NULL)
goto ops_tx;
KASSERT(ltxq != NULL, ("%s: lsta %p sta %p m %p skb %p "
"ltxq %p != NULL\n", __func__, lsta, sta, m, skb, ltxq));
LKPI_80211_LTXQ_LOCK(ltxq);
skb_queue_tail(&ltxq->skbq, skb);
ltxq->frms_enqueued++;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX)
printf("%s:%d mo_wake_tx_queue :: %d %lu lsta %p sta %p "
"ni %p %6D skb %p lxtq %p { qlen %u, ac %d tid %u } "
"WAKE_TX_Q ac %d prio %u qmap %u\n",
__func__, __LINE__,
curthread->td_tid, jiffies,
lsta, sta, ni, ni->ni_macaddr, ":", skb, ltxq,
skb_queue_len(&ltxq->skbq), ltxq->txq.ac,
ltxq->txq.tid, ac, skb->priority, skb->qmap);
#endif
LKPI_80211_LTXQ_UNLOCK(ltxq);
wiphy_lock(hw->wiphy);
lkpi_80211_mo_wake_tx_queue(hw, &ltxq->txq, true);
wiphy_unlock(hw->wiphy);
return;
ops_tx:
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX)
printf("%s:%d mo_tx :: lsta %p sta %p ni %p %6D skb %p "
"TX ac %d prio %u qmap %u\n",
__func__, __LINE__, lsta, sta, ni, ni->ni_macaddr, ":",
skb, ac, skb->priority, skb->qmap);
#endif
memset(&control, 0, sizeof(control));
control.sta = sta;
wiphy_lock(hw->wiphy);
lkpi_80211_mo_tx(hw, &control, skb);
lsta->frms_tx++;
wiphy_unlock(hw->wiphy);
}
static void
lkpi_80211_txq_task(void *ctx, int pending)
{
struct lkpi_sta *lsta;
struct mbufq mq;
struct mbuf *m;
bool shall_tx;
lsta = ctx;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX)
printf("%s:%d lsta %p ni %p %6D pending %d mbuf_qlen %d\n",
__func__, __LINE__, lsta, lsta->ni, lsta->ni->ni_macaddr, ":",
pending, mbufq_len(&lsta->txq));
#endif
mbufq_init(&mq, IFQ_MAXLEN);
LKPI_80211_LSTA_TXQ_LOCK(lsta);
/*
* Do not re-check lsta->txq_ready here; we may have a pending
* disassoc/deauth frame still. On the contrary if txq_ready is
* false we do not have a valid sta anymore in the firmware so no
* point to try to TX.
* We also use txq_ready as a semaphore and will drain the txq manually
* if needed on our way towards SCAN/INIT in the state machine.
*/
#if 0
shall_tx = lsta->added_to_drv && lsta->txq_ready;
#else
/*
* Backout this part of 886653492945f which breaks rtw88 or
* in general drivers without (*sta_state)() but only the
* legacy fallback to (*sta_add)().
*/
shall_tx = lsta->txq_ready;
#endif
if (__predict_true(shall_tx))
mbufq_concat(&mq, &lsta->txq);
/*
* else a state change will push the packets out manually or
* lkpi_lsta_free() will drain the lsta->txq and free the mbufs.
*/
LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
m = mbufq_dequeue(&mq);
while (m != NULL) {
lkpi_80211_txq_tx_one(lsta, m);
m = mbufq_dequeue(&mq);
}
}
static int
lkpi_ic_transmit(struct ieee80211com *ic, struct mbuf *m)
{
/* XXX TODO */
IMPROVE();
/* Quick and dirty cheating hack. */
struct ieee80211_node *ni;
ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
return (lkpi_xmit(ni, m, NULL, false));
}
#ifdef LKPI_80211_HT
static int
lkpi_ic_recv_action(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
const uint8_t *frm, const uint8_t *efrm)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
ic = ni->ni_ic;
lhw = ic->ic_softc;
IMPROVE_HT("recv_action called; nothing to do in lkpi; make debugging");
return (lhw->ic_recv_action(ni, wh, frm, efrm));
}
static int
lkpi_ic_send_action(struct ieee80211_node *ni, int category, int action, void *sa)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
ic = ni->ni_ic;
lhw = ic->ic_softc;
IMPROVE_HT("send_action called; nothing to do in lkpi; make debugging");
return (lhw->ic_send_action(ni, category, action, sa));
}
static int
lkpi_ic_ampdu_enable(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
ic = ni->ni_ic;
lhw = ic->ic_softc;
IMPROVE_HT("ieee80211_ampdu_enable called; nothing to do in lkpi for now; make debugging");
return (lhw->ic_ampdu_enable(ni, tap));
}
/*
* (*ic_addba_request)() is called by ieee80211_ampdu_request() before
* calling send_action(CAT_BA, BA_ADDBA_REQUEST).
*
* NB: returns 0 on ERROR!
*/
static int
lkpi_ic_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
int dialogtoken, int baparamset, int batimeout)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct ieee80211vap *vap;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_ampdu_params params = { };
int error;
ic = ni->ni_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
vap = ni->ni_vap;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
lsta = ni->ni_drv_data;
sta = LSTA_TO_STA(lsta);
if (!lsta->added_to_drv) {
ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n",
__func__, lsta, ni, sta);
return (0);
}
params.sta = sta;
params.action = IEEE80211_AMPDU_TX_START;
/* Keep 0 here! */
params.buf_size = 0;
params.timeout = 0;
params.ssn = tap->txa_start & (IEEE80211_SEQ_RANGE-1);
params.tid = tap->txa_tid;
params.amsdu = false;
IEEE80211_UNLOCK(ic);
wiphy_lock(hw->wiphy);
error = lkpi_80211_mo_ampdu_action(hw, vif, &params);
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(ic);
if (error != 0) {
ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n",
__func__, error, ni, tap);
return (0);
}
return (lhw->ic_addba_request(ni, tap, dialogtoken, baparamset, batimeout));
}
/*
* (*ic_addba_response)() is called from ht_recv_action_ba_addba_response()
* and calls the default ieee80211_addba_response() which always returns 1.
*
* NB: No error checking in net80211!
* Staying with 0 is an error.
*/
static int
lkpi_ic_addba_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
int status, int baparamset, int batimeout)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct ieee80211vap *vap;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_ampdu_params params = { };
int error;
ic = ni->ni_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
vap = ni->ni_vap;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
lsta = ni->ni_drv_data;
sta = LSTA_TO_STA(lsta);
if (!lsta->added_to_drv) {
ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n",
__func__, lsta, ni, sta);
return (0);
}
if (status == IEEE80211_STATUS_SUCCESS) {
params.sta = sta;
params.action = IEEE80211_AMPDU_TX_OPERATIONAL;
params.buf_size = tap->txa_wnd;
params.timeout = 0;
params.ssn = 0;
params.tid = tap->txa_tid;
if ((tap->txa_flags & IEEE80211_AGGR_AMSDU) != 0)
params.amsdu = true;
else
params.amsdu = false;
} else {
/* We need to free the allocated resources. */
params.sta = sta;
switch (status) {
/* params.action = FLUSH, FLUSH_CONT */
default:
params.action = IEEE80211_AMPDU_TX_STOP_CONT;
break;
}
params.buf_size = 0;
params.timeout = 0;
params.ssn = 0;
params.tid = tap->txa_tid;
params.amsdu = false;
}
IEEE80211_UNLOCK(ic);
wiphy_lock(hw->wiphy);
error = lkpi_80211_mo_ampdu_action(hw, vif, &params);
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(ic);
if (error != 0) {
ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n",
__func__, error, ni, tap);
return (0);
}
IMPROVE_HT("who unleashes the TXQ? and when?, do we need to ni->ni_txseqs[tid] = tap->txa_start & 0xfff;");
return (lhw->ic_addba_response(ni, tap, status, baparamset, batimeout));
}
/*
* (*ic_addba_stop)() is called from ampdu_tx_stop(), ht_recv_action_ba_delba(),
* and ieee80211_ampdu_stop() and calls the default ieee80211_addba_stop().
*/
static void
lkpi_ic_addba_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct ieee80211vap *vap;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_ampdu_params params = { };
int error;
ic = ni->ni_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
vap = ni->ni_vap;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
lsta = ni->ni_drv_data;
sta = LSTA_TO_STA(lsta);
if (!lsta->added_to_drv) {
ic_printf(ic, "%s: lsta %p ni %p, sta %p not added to firmware\n",
__func__, lsta, ni, sta);
goto n80211;
}
/* We need to free the allocated resources. */
params.sta = sta;
IMPROVE("net80211 does not provide a reason to us");
params.action = IEEE80211_AMPDU_TX_STOP_CONT; /* params.action = FLUSH, FLUSH_CONT */
params.buf_size = 0;
params.timeout = 0;
params.ssn = 0;
params.tid = tap->txa_tid;
params.amsdu = false;
IEEE80211_UNLOCK(ic);
wiphy_lock(hw->wiphy);
error = lkpi_80211_mo_ampdu_action(hw, vif, &params);
wiphy_unlock(hw->wiphy);
IEEE80211_LOCK(ic);
if (error != 0) {
ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p tap %p\n",
__func__, error, ni, tap);
goto n80211;
}
IMPROVE_HT("anyting else?");
n80211:
lhw->ic_addba_stop(ni, tap);
}
static void
lkpi_ic_addba_response_timeout(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
ic = ni->ni_ic;
lhw = ic->ic_softc;
IMPROVE_HT();
lhw->ic_addba_response_timeout(ni, tap);
}
static void
lkpi_ic_bar_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
int status)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
ic = ni->ni_ic;
lhw = ic->ic_softc;
IMPROVE_HT();
lhw->ic_bar_response(ni, tap, status);
}
static int
lkpi_ic_ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
int baparamset, int batimeout, int baseqctl)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct ieee80211vap *vap;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_ampdu_params params = { };
int error;
ic = ni->ni_ic;
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
vap = ni->ni_vap;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
lsta = ni->ni_drv_data;
sta = LSTA_TO_STA(lsta);
IEEE80211_UNLOCK_ASSERT(ic);
if (!lsta->added_to_drv) {
ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p not added to firmware\n",
__func__, lsta, ni, vap, sta);
return (-ENXIO);
}
if (lsta->state != IEEE80211_STA_AUTHORIZED) {
ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p state %d not AUTHORIZED\n",
__func__, lsta, ni, vap, sta, lsta->state);
return (-ENXIO);
}
params.sta = sta;
params.action = IEEE80211_AMPDU_RX_START;
params.buf_size = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_BUFSIZ);
if (params.buf_size == 0)
params.buf_size = IEEE80211_MAX_AMPDU_BUF_HT;
else
params.buf_size = min(params.buf_size, IEEE80211_MAX_AMPDU_BUF_HT);
if (hw->max_rx_aggregation_subframes > 0 &&
params.buf_size > hw->max_rx_aggregation_subframes)
params.buf_size = hw->max_rx_aggregation_subframes;
params.timeout = le16toh(batimeout);
params.ssn = _IEEE80211_MASKSHIFT(le16toh(baseqctl), IEEE80211_BASEQ_START);
params.tid = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_TID);
/* Based on net80211::ampdu_rx_start(). */
if ((vap->iv_htcaps & IEEE80211_HTC_RX_AMSDU_AMPDU) &&
(_IEEE80211_MASKSHIFT(baparamset, IEEE80211_BAPS_AMSDU)))
params.amsdu = true;
else
params.amsdu = false;
wiphy_lock(hw->wiphy);
error = lkpi_80211_mo_ampdu_action(hw, vif, &params);
wiphy_unlock(hw->wiphy);
if (error != 0) {
ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n",
__func__, error, ni, rap);
return (error);
}
if (!ieee80211_hw_check(hw, SUPPORTS_REORDERING_BUFFER)) {
IMPROVE("%s: TODO: SUPPORTS_REORDERING_BUFFER not set; check net80211\n", __func__);
}
IMPROVE_HT("net80211 is missing the error check on return and assumes success");
error = lhw->ic_ampdu_rx_start(ni, rap, baparamset, batimeout, baseqctl);
return (error);
}
static void
lkpi_ic_ampdu_rx_stop(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct ieee80211vap *vap;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
struct ieee80211_ampdu_params params = { };
int error;
uint8_t tid;
bool ic_locked;
ic = ni->ni_ic;
lhw = ic->ic_softc;
/*
* We should not (cannot) call into mac80211 ops with AMPDU_RX_STOP if
* we did not START. Some drivers pass it down to firmware which will
* simply barf and net80211 calls ieee80211_ht_node_cleanup() from
* ieee80211_ht_node_init() amongst others which will iterate over all
* tid and call ic_ampdu_rx_stop() unconditionally.
* XXX net80211 should probably be more "gentle" in these cases and
* track some state itself.
*/
if ((rap->rxa_flags & IEEE80211_AGGR_RUNNING) == 0)
goto net80211_only;
hw = LHW_TO_HW(lhw);
vap = ni->ni_vap;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
lsta = ni->ni_drv_data;
if (lsta == NULL) {
ic_printf(ic, "%s: lsta %p ni %p vap %p, lsta is NULL\n",
__func__, lsta, ni, vap);
goto net80211_only;
}
sta = LSTA_TO_STA(lsta);
if (!lsta->added_to_drv) {
ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p not added to firmware\n",
__func__, lsta, ni, vap, sta);
goto net80211_only;
}
if (lsta->state != IEEE80211_STA_AUTHORIZED) {
ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p state %d not AUTHORIZED\n",
__func__, lsta, ni, vap, sta, lsta->state);
goto net80211_only;
}
IMPROVE_HT("This really should be passed from ht_recv_action_ba_delba.");
for (tid = 0; tid < WME_NUM_TID; tid++) {
if (&ni->ni_rx_ampdu[tid] == rap)
break;
}
if (tid == WME_NUM_TID) {
ic_printf(ic, "%s: lsta %p ni %p vap %p, sta %p TID not found\n",
__func__, lsta, ni, vap, sta);
goto net80211_only;
}
params.sta = sta;
params.action = IEEE80211_AMPDU_RX_STOP;
params.buf_size = 0;
params.timeout = 0;
params.ssn = 0;
params.tid = tid;
params.amsdu = false;
ic_locked = IEEE80211_IS_LOCKED(ic);
if (ic_locked)
IEEE80211_UNLOCK(ic);
wiphy_lock(hw->wiphy);
error = lkpi_80211_mo_ampdu_action(hw, vif, &params);
wiphy_unlock(hw->wiphy);
if (ic_locked)
IEEE80211_LOCK(ic);
if (error != 0)
ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n",
__func__, error, ni, rap);
net80211_only:
lhw->ic_ampdu_rx_stop(ni, rap);
}
#endif
static void
lkpi_ic_getradiocaps_ht(struct ieee80211com *ic, struct ieee80211_hw *hw,
uint8_t *bands, int *chan_flags, enum nl80211_band band)
{
#ifdef LKPI_80211_HT
struct ieee80211_sta_ht_cap *ht_cap;
ht_cap = &hw->wiphy->bands[band]->ht_cap;
if (!ht_cap->ht_supported)
return;
switch (band) {
case NL80211_BAND_2GHZ:
setbit(bands, IEEE80211_MODE_11NG);
break;
case NL80211_BAND_5GHZ:
setbit(bands, IEEE80211_MODE_11NA);
break;
default:
IMPROVE("Unsupported band %d", band);
return;
}
ic->ic_htcaps = IEEE80211_HTC_HT; /* HT operation */
/*
* Rather than manually checking each flag and
* translating IEEE80211_HT_CAP_ to IEEE80211_HTCAP_,
* simply copy the 16bits.
*/
ic->ic_htcaps |= ht_cap->cap;
/* Then deal with the other flags. */
if (ieee80211_hw_check(hw, AMPDU_AGGREGATION))
ic->ic_htcaps |= IEEE80211_HTC_AMPDU;
#ifdef __notyet__
if (ieee80211_hw_check(hw, TX_AMSDU))
ic->ic_htcaps |= IEEE80211_HTC_AMSDU;
if (ieee80211_hw_check(hw, SUPPORTS_AMSDU_IN_AMPDU))
ic->ic_htcaps |= (IEEE80211_HTC_RX_AMSDU_AMPDU |
IEEE80211_HTC_TX_AMSDU_AMPDU);
#endif
IMPROVE("PS, ampdu_*, ht_cap.mcs.tx_params, ...");
/* Only add HT40 channels if supported. */
if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) != 0 &&
chan_flags != NULL)
*chan_flags |= NET80211_CBW_FLAG_HT40;
#endif
}
static void
lkpi_ic_getradiocaps(struct ieee80211com *ic, int maxchan,
int *n, struct ieee80211_channel *c)
{
struct lkpi_hw *lhw;
struct ieee80211_hw *hw;
struct linuxkpi_ieee80211_channel *channels;
uint8_t bands[IEEE80211_MODE_BYTES];
int chan_flags, error, i, nchans;
/* Channels */
lhw = ic->ic_softc;
hw = LHW_TO_HW(lhw);
/* NL80211_BAND_2GHZ */
nchans = 0;
if (hw->wiphy->bands[NL80211_BAND_2GHZ] != NULL)
nchans = hw->wiphy->bands[NL80211_BAND_2GHZ]->n_channels;
if (nchans > 0) {
memset(bands, 0, sizeof(bands));
chan_flags = 0;
setbit(bands, IEEE80211_MODE_11B);
/* XXX-BZ unclear how to check for 11g. */
IMPROVE("the bitrates may have flags?");
setbit(bands, IEEE80211_MODE_11G);
lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags,
NL80211_BAND_2GHZ);
channels = hw->wiphy->bands[NL80211_BAND_2GHZ]->channels;
for (i = 0; i < nchans && *n < maxchan; i++) {
uint32_t nflags = 0;
int cflags = chan_flags;
if (channels[i].flags & IEEE80211_CHAN_DISABLED) {
ic_printf(ic, "%s: Skipping disabled chan "
"[%u/%u/%#x]\n", __func__,
channels[i].hw_value,
channels[i].center_freq, channels[i].flags);
continue;
}
if (channels[i].flags & IEEE80211_CHAN_NO_IR)
nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE);
if (channels[i].flags & IEEE80211_CHAN_RADAR)
nflags |= IEEE80211_CHAN_DFS;
if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ)
cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80);
if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ)
cflags &= ~NET80211_CBW_FLAG_VHT80;
/* XXX how to map the remaining enum ieee80211_channel_flags? */
if (channels[i].flags & IEEE80211_CHAN_NO_HT40)
cflags &= ~NET80211_CBW_FLAG_HT40;
error = ieee80211_add_channel_cbw(c, maxchan, n,
ieee80211_mhz2ieee(channels[i].center_freq,
lkpi_nl80211_band_to_net80211_band(channels[i].band)),
channels[i].center_freq, channels[i].max_power,
nflags, bands, cflags);
/* net80211::ENOBUFS: *n >= maxchans */
if (error != 0 && error != ENOBUFS)
ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x "
"returned error %d\n",
__func__, channels[i].hw_value,
channels[i].center_freq, channels[i].flags,
nflags, chan_flags, cflags, error);
if (error != 0)
break;
}
}
/* NL80211_BAND_5GHZ */
nchans = 0;
if (hw->wiphy->bands[NL80211_BAND_5GHZ] != NULL)
nchans = hw->wiphy->bands[NL80211_BAND_5GHZ]->n_channels;
if (nchans > 0) {
memset(bands, 0, sizeof(bands));
chan_flags = 0;
setbit(bands, IEEE80211_MODE_11A);
lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags,
NL80211_BAND_5GHZ);
#ifdef LKPI_80211_VHT
if (hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.vht_supported) {
ic->ic_flags_ext |= IEEE80211_FEXT_VHT;
ic->ic_vht_cap.vht_cap_info =
hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap;
ic->ic_vht_cap.supp_mcs =
hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.vht_mcs;
setbit(bands, IEEE80211_MODE_VHT_5GHZ);
chan_flags |= NET80211_CBW_FLAG_VHT80;
if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160MHZ(
ic->ic_vht_cap.vht_cap_info))
chan_flags |= NET80211_CBW_FLAG_VHT160;
if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160_80P80MHZ(
ic->ic_vht_cap.vht_cap_info))
chan_flags |= NET80211_CBW_FLAG_VHT80P80;
}
#endif
channels = hw->wiphy->bands[NL80211_BAND_5GHZ]->channels;
for (i = 0; i < nchans && *n < maxchan; i++) {
uint32_t nflags = 0;
int cflags = chan_flags;
if (channels[i].flags & IEEE80211_CHAN_DISABLED) {
ic_printf(ic, "%s: Skipping disabled chan "
"[%u/%u/%#x]\n", __func__,
channels[i].hw_value,
channels[i].center_freq, channels[i].flags);
continue;
}
if (channels[i].flags & IEEE80211_CHAN_NO_IR)
nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE);
if (channels[i].flags & IEEE80211_CHAN_RADAR)
nflags |= IEEE80211_CHAN_DFS;
if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ)
cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80);
if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ)
cflags &= ~NET80211_CBW_FLAG_VHT80;
/* XXX hwo to map the remaining enum ieee80211_channel_flags? */
if (channels[i].flags & IEEE80211_CHAN_NO_HT40)
cflags &= ~NET80211_CBW_FLAG_HT40;
error = ieee80211_add_channel_cbw(c, maxchan, n,
ieee80211_mhz2ieee(channels[i].center_freq,
lkpi_nl80211_band_to_net80211_band(channels[i].band)),
channels[i].center_freq, channels[i].max_power,
nflags, bands, cflags);
/* net80211::ENOBUFS: *n >= maxchans */
if (error != 0 && error != ENOBUFS)
ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x "
"returned error %d\n",
__func__, channels[i].hw_value,
channels[i].center_freq, channels[i].flags,
nflags, chan_flags, cflags, error);
if (error != 0)
break;
}
}
}
static void *
lkpi_ieee80211_ifalloc(void)
{
struct ieee80211com *ic;
ic = malloc(sizeof(*ic), M_LKPI80211, M_WAITOK | M_ZERO);
/* Setting these happens later when we have device information. */
ic->ic_softc = NULL;
ic->ic_name = "linuxkpi";
return (ic);
}
struct ieee80211_hw *
linuxkpi_ieee80211_alloc_hw(size_t priv_len, const struct ieee80211_ops *ops)
{
struct ieee80211_hw *hw;
struct lkpi_hw *lhw;
struct wiphy *wiphy;
int ac;
/* Get us and the driver data also allocated. */
wiphy = wiphy_new(&linuxkpi_mac80211cfgops, sizeof(*lhw) + priv_len);
if (wiphy == NULL)
return (NULL);
lhw = wiphy_priv(wiphy);
lhw->ops = ops;
LKPI_80211_LHW_SCAN_LOCK_INIT(lhw);
LKPI_80211_LHW_TXQ_LOCK_INIT(lhw);
spin_lock_init(&lhw->txq_lock);
sx_init_flags(&lhw->lvif_sx, "lhw-lvif", SX_RECURSE | SX_DUPOK);
LKPI_80211_LHW_MC_LOCK_INIT(lhw);
TAILQ_INIT(&lhw->lvif_head);
__hw_addr_init(&lhw->mc_list);
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
spin_lock_init(&lhw->txq_scheduled_lock[ac]);
lhw->txq_generation[ac] = 1;
TAILQ_INIT(&lhw->txq_scheduled[ac]);
}
/* Chanctx_conf */
INIT_LIST_HEAD(&lhw->lchanctx_list);
/* Deferred RX path. */
LKPI_80211_LHW_RXQ_LOCK_INIT(lhw);
TASK_INIT(&lhw->rxq_task, 0, lkpi_80211_lhw_rxq_task, lhw);
mbufq_init(&lhw->rxq, 32 * NAPI_POLL_WEIGHT);
lhw->rxq_stopped = false;
/*
* XXX-BZ TODO make sure there is a "_null" function to all ops
* not initialized.
*/
hw = LHW_TO_HW(lhw);
hw->wiphy = wiphy;
hw->conf.flags |= IEEE80211_CONF_IDLE;
hw->priv = (void *)(lhw + 1);
/* BSD Specific. */
lhw->ic = lkpi_ieee80211_ifalloc();
IMPROVE();
return (hw);
}
void
linuxkpi_ieee80211_iffree(struct ieee80211_hw *hw)
{
struct lkpi_hw *lhw;
struct mbuf *m;
int ac;
lhw = HW_TO_LHW(hw);
free(lhw->ic, M_LKPI80211);
lhw->ic = NULL;
/*
* Drain the deferred RX path.
*/
LKPI_80211_LHW_RXQ_LOCK(lhw);
lhw->rxq_stopped = true;
LKPI_80211_LHW_RXQ_UNLOCK(lhw);
/* Drain taskq, won't be restarted due to rxq_stopped being set. */
while (taskqueue_cancel(taskqueue_thread, &lhw->rxq_task, NULL) != 0)
taskqueue_drain(taskqueue_thread, &lhw->rxq_task);
/* Flush mbufq (make sure to release ni refs!). */
m = mbufq_dequeue(&lhw->rxq);
while (m != NULL) {
#ifdef LKPI_80211_USE_MTAG
struct m_tag *mtag;
mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL);
if (mtag != NULL) {
struct lkpi_80211_tag_rxni *rxni;
rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
ieee80211_free_node(rxni->ni);
}
#else
if (m->m_pkthdr.PH_loc.ptr != NULL) {
struct ieee80211_node *ni;
ni = m->m_pkthdr.PH_loc.ptr;
ieee80211_free_node(ni);
}
#endif
m_freem(m);
m = mbufq_dequeue(&lhw->rxq);
}
KASSERT(mbufq_empty(&lhw->rxq), ("%s: lhw %p has rxq len %d != 0\n",
__func__, lhw, mbufq_len(&lhw->rxq)));
LKPI_80211_LHW_RXQ_LOCK_DESTROY(lhw);
/* Chanctx_conf. */
if (!list_empty_careful(&lhw->lchanctx_list)) {
struct lkpi_chanctx *lchanctx, *next;
struct ieee80211_chanctx_conf *chanctx_conf;
list_for_each_entry_safe(lchanctx, next, &lhw->lchanctx_list, entry) {
if (lchanctx->added_to_drv) {
/* In reality we should panic? */
chanctx_conf = &lchanctx->chanctx_conf;
lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
}
list_del(&lchanctx->entry);
free(lchanctx, M_LKPI80211);
}
}
LKPI_80211_LHW_MC_LOCK(lhw);
lkpi_cleanup_mcast_list_locked(lhw);
LKPI_80211_LHW_MC_UNLOCK(lhw);
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
spin_lock_destroy(&lhw->txq_scheduled_lock[ac]);
/* Cleanup more of lhw here or in wiphy_free()? */
spin_lock_destroy(&lhw->txq_lock);
LKPI_80211_LHW_TXQ_LOCK_DESTROY(lhw);
LKPI_80211_LHW_SCAN_LOCK_DESTROY(lhw);
sx_destroy(&lhw->lvif_sx);
LKPI_80211_LHW_MC_LOCK_DESTROY(lhw)
IMPROVE();
}
void
linuxkpi_set_ieee80211_dev(struct ieee80211_hw *hw)
{
struct lkpi_hw *lhw;
struct ieee80211com *ic;
struct device *dev;
lhw = HW_TO_LHW(hw);
ic = lhw->ic;
/* Save the backpointer from net80211 to LinuxKPI. */
ic->ic_softc = lhw;
/*
* Set a proper name before ieee80211_ifattach() if dev is set.
* ath1xk also unset the dev so we need to check.
*/
dev = wiphy_dev(hw->wiphy);
if (dev != NULL) {
ic->ic_name = dev_name(dev);
} else {
TODO("adjust arguments to still have the old dev or go through "
"the hoops of getting the bsddev from hw and detach; "
"or do in XXX; check ath1kx drivers");
}
/* XXX-BZ do we also need to set wiphy name? */
}
struct ieee80211_hw *
linuxkpi_wiphy_to_ieee80211_hw(struct wiphy *wiphy)
{
struct lkpi_hw *lhw;
lhw = wiphy_priv(wiphy);
return (LHW_TO_HW(lhw));
}
static void
lkpi_radiotap_attach(struct lkpi_hw *lhw)
{
struct ieee80211com *ic;
ic = lhw->ic;
ieee80211_radiotap_attach(ic,
&lhw->rtap_tx.wt_ihdr, sizeof(lhw->rtap_tx),
LKPI_RTAP_TX_FLAGS_PRESENT,
&lhw->rtap_rx.wr_ihdr, sizeof(lhw->rtap_rx),
LKPI_RTAP_RX_FLAGS_PRESENT);
}
int
linuxkpi_ieee80211_ifattach(struct ieee80211_hw *hw)
{
struct ieee80211com *ic;
struct lkpi_hw *lhw;
int band, i;
lhw = HW_TO_LHW(hw);
ic = lhw->ic;
/* We do it this late as wiphy->dev should be set for the name. */
lhw->workq = alloc_ordered_workqueue(wiphy_name(hw->wiphy), 0);
if (lhw->workq == NULL)
return (-EAGAIN);
/* XXX-BZ figure this out how they count his... */
if (!is_zero_ether_addr(hw->wiphy->perm_addr)) {
IEEE80211_ADDR_COPY(ic->ic_macaddr,
hw->wiphy->perm_addr);
} else if (hw->wiphy->n_addresses > 0) {
/* We take the first one. */
IEEE80211_ADDR_COPY(ic->ic_macaddr,
hw->wiphy->addresses[0].addr);
} else {
ic_printf(ic, "%s: warning, no hardware address!\n", __func__);
}
#ifdef __not_yet__
/* See comment in lkpi_80211_txq_tx_one(). */
ic->ic_headroom = hw->extra_tx_headroom;
#endif
ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
ic->ic_opmode = IEEE80211_M_STA;
/* Set device capabilities. */
/* XXX-BZ we need to get these from linux80211/drivers and convert. */
ic->ic_caps =
IEEE80211_C_STA |
IEEE80211_C_MONITOR |
IEEE80211_C_WPA | /* WPA/RSN */
#ifdef LKPI_80211_WME
IEEE80211_C_WME |
#endif
#if 0
IEEE80211_C_PMGT |
#endif
IEEE80211_C_SHSLOT | /* short slot time supported */
IEEE80211_C_SHPREAMBLE /* short preamble supported */
;
#ifdef LKPI_80211_BGSCAN
if (lhw->ops->hw_scan)
ic->ic_caps |= IEEE80211_C_BGSCAN;
#endif
lkpi_enable_hw_scan(lhw);
/* Does HW support Fragmentation offload? */
if (ieee80211_hw_check(hw, SUPPORTS_TX_FRAG))
ic->ic_flags_ext |= IEEE80211_FEXT_FRAG_OFFLOAD;
/* Does HW support full AMPDU[-TX] offload? */
if (ieee80211_hw_check(hw, AMPDU_AGGREGATION))
ic->ic_flags_ext |= IEEE80211_FEXT_AMPDU_OFFLOAD;
#ifdef __notyet__
if (ieee80211_hw_check(hw, TX_AMSDU))
if (ieee80211_hw_check(hw, SUPPORTS_AMSDU_IN_AMPDU))
#endif
/*
* The wiphy variables report bitmasks of avail antennas.
* (*get_antenna) get the current bitmask sets which can be
* altered by (*set_antenna) for some drivers.
* XXX-BZ will the count alone do us much good long-term in net80211?
*/
if (hw->wiphy->available_antennas_rx ||
hw->wiphy->available_antennas_tx) {
uint32_t rxs, txs;
if (lkpi_80211_mo_get_antenna(hw, &txs, &rxs) == 0) {
ic->ic_rxstream = bitcount32(rxs);
ic->ic_txstream = bitcount32(txs);
}
}
ic->ic_cryptocaps = 0;
#ifdef LKPI_80211_HW_CRYPTO
if (lkpi_hwcrypto && hw->wiphy->n_cipher_suites > 0) {
uint32_t hwciphers;
hwciphers = 0;
for (i = 0; i < hw->wiphy->n_cipher_suites; i++) {
uint32_t cs;
cs = lkpi_l80211_to_net80211_cyphers(
ic, hw->wiphy->cipher_suites[i]);
if (cs == IEEE80211_CRYPTO_TKIP) {
/*
* We do set this here. We will only find out
* when doing a SET_KEY operation depending on
* what the driver returns.
* net80211::ieee80211_crypto_newkey()
* checks this so we will have to do flags
* surgery later.
*/
cs |= IEEE80211_CRYPTO_TKIPMIC;
}
hwciphers |= cs;
}
/*
* (20250415) nothing anywhere in the path checks we actually
* support all these in net80211.
* net80211 supports _256 variants but the ioctl does not.
*/
IMPROVE("as net80211 grows more support, enable them");
hwciphers &= (IEEE80211_CRYPTO_WEP |
IEEE80211_CRYPTO_TKIP | IEEE80211_CRYPTO_TKIPMIC |
IEEE80211_CRYPTO_AES_CCM | IEEE80211_CRYPTO_AES_GCM_128);
/*
* We only support CCMP here, so further filter.
* Also permit TKIP if turned on.
*/
hwciphers &= (IEEE80211_CRYPTO_AES_CCM |
IEEE80211_CRYPTO_AES_GCM_128 |
(lkpi_hwcrypto_tkip ? (IEEE80211_CRYPTO_TKIP |
IEEE80211_CRYPTO_TKIPMIC) : 0));
ieee80211_set_hardware_ciphers(ic, hwciphers);
}
#endif
lkpi_ic_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
ic->ic_channels);
ieee80211_ifattach(ic);
ic->ic_update_mcast = lkpi_ic_update_mcast;
ic->ic_update_promisc = lkpi_ic_update_promisc;
ic->ic_update_chw = lkpi_ic_update_chw;
ic->ic_parent = lkpi_ic_parent;
ic->ic_scan_start = lkpi_ic_scan_start;
ic->ic_scan_end = lkpi_ic_scan_end;
ic->ic_set_channel = lkpi_ic_set_channel;
ic->ic_transmit = lkpi_ic_transmit;
ic->ic_raw_xmit = lkpi_ic_raw_xmit;
ic->ic_vap_create = lkpi_ic_vap_create;
ic->ic_vap_delete = lkpi_ic_vap_delete;
ic->ic_getradiocaps = lkpi_ic_getradiocaps;
ic->ic_wme.wme_update = lkpi_ic_wme_update;
lhw->ic_scan_curchan = ic->ic_scan_curchan;
ic->ic_scan_curchan = lkpi_ic_scan_curchan;
lhw->ic_scan_mindwell = ic->ic_scan_mindwell;
ic->ic_scan_mindwell = lkpi_ic_scan_mindwell;
lhw->ic_node_alloc = ic->ic_node_alloc;
ic->ic_node_alloc = lkpi_ic_node_alloc;
lhw->ic_node_init = ic->ic_node_init;
ic->ic_node_init = lkpi_ic_node_init;
lhw->ic_node_cleanup = ic->ic_node_cleanup;
ic->ic_node_cleanup = lkpi_ic_node_cleanup;
lhw->ic_node_free = ic->ic_node_free;
ic->ic_node_free = lkpi_ic_node_free;
#ifdef LKPI_80211_HT
/*
* Only attach if the driver/firmware supports (*ampdu_action)().
* Otherwise it is in the hands of net80211.
*/
if (lhw->ops->ampdu_action != NULL) {
lhw->ic_recv_action = ic->ic_recv_action;
ic->ic_recv_action = lkpi_ic_recv_action;
lhw->ic_send_action = ic->ic_send_action;
ic->ic_send_action = lkpi_ic_send_action;
lhw->ic_ampdu_enable = ic->ic_ampdu_enable;
ic->ic_ampdu_enable = lkpi_ic_ampdu_enable;
lhw->ic_addba_request = ic->ic_addba_request;
ic->ic_addba_request = lkpi_ic_addba_request;
lhw->ic_addba_response = ic->ic_addba_response;
ic->ic_addba_response = lkpi_ic_addba_response;
lhw->ic_addba_stop = ic->ic_addba_stop;
ic->ic_addba_stop = lkpi_ic_addba_stop;
lhw->ic_addba_response_timeout = ic->ic_addba_response_timeout;
ic->ic_addba_response_timeout = lkpi_ic_addba_response_timeout;
lhw->ic_bar_response = ic->ic_bar_response;
ic->ic_bar_response = lkpi_ic_bar_response;
lhw->ic_ampdu_rx_start = ic->ic_ampdu_rx_start;
ic->ic_ampdu_rx_start = lkpi_ic_ampdu_rx_start;
lhw->ic_ampdu_rx_stop = ic->ic_ampdu_rx_stop;
ic->ic_ampdu_rx_stop = lkpi_ic_ampdu_rx_stop;
}
#endif
lkpi_radiotap_attach(lhw);
/*
* Assign the first possible channel for now; seems Realtek drivers
* expect one.
* Also remember the amount of bands we support and the most rates
* in any band so we can scale [(ext) sup rates] IE(s) accordingly.
*/
lhw->supbands = lhw->max_rates = 0;
for (band = 0; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *supband;
struct linuxkpi_ieee80211_channel *channels;
supband = hw->wiphy->bands[band];
if (supband == NULL || supband->n_channels == 0)
continue;
lhw->supbands++;
lhw->max_rates = max(lhw->max_rates, supband->n_bitrates);
/* If we have a channel, we need to keep counting supbands. */
if (hw->conf.chandef.chan != NULL)
continue;
channels = supband->channels;
for (i = 0; i < supband->n_channels; i++) {
if (channels[i].flags & IEEE80211_CHAN_DISABLED)
continue;
cfg80211_chandef_create(&hw->conf.chandef, &channels[i],
#ifdef LKPI_80211_HT
(ic->ic_flags_ht & IEEE80211_FHT_HT) ? NL80211_CHAN_HT20 :
#endif
NL80211_CHAN_NO_HT);
break;
}
}
IMPROVE("see net80211::ieee80211_chan_init vs. wiphy->bands[].bitrates possibly in lkpi_ic_getradiocaps?");
/* Make sure we do not support more than net80211 is willing to take. */
if (lhw->max_rates > IEEE80211_RATE_MAXSIZE) {
ic_printf(ic, "%s: limiting max_rates %d to %d!\n", __func__,
lhw->max_rates, IEEE80211_RATE_MAXSIZE);
lhw->max_rates = IEEE80211_RATE_MAXSIZE;
}
/*
* The maximum supported bitrates on any band + size for
* DSSS Parameter Set give our per-band IE size.
* SSID is the responsibility of the driver and goes on the side.
* The user specified bits coming from the vap go into the
* "common ies" fields.
*/
lhw->scan_ie_len = 2 + IEEE80211_RATE_SIZE;
if (lhw->max_rates > IEEE80211_RATE_SIZE)
lhw->scan_ie_len += 2 + (lhw->max_rates - IEEE80211_RATE_SIZE);
if (hw->wiphy->features & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) {
/*
* net80211 does not seem to support the DSSS Parameter Set but
* some of the drivers insert it so calculate the extra fixed
* space in.
*/
lhw->scan_ie_len += 2 + 1;
}
#if defined(LKPI_80211_HT)
if ((ic->ic_htcaps & IEEE80211_HTC_HT) != 0)
lhw->scan_ie_len += sizeof(struct ieee80211_ie_htcap);
#endif
#if defined(LKPI_80211_VHT)
if (IEEE80211_CONF_VHT(ic))
lhw->scan_ie_len += 2 + sizeof(struct ieee80211_vht_cap);
#endif
/* Reduce the max_scan_ie_len "left" by the amount we consume already. */
if (hw->wiphy->max_scan_ie_len > 0) {
if (lhw->scan_ie_len > hw->wiphy->max_scan_ie_len)
goto err;
hw->wiphy->max_scan_ie_len -= lhw->scan_ie_len;
}
if (bootverbose) {
if (hw->netdev_features != 0)
ic_printf(ic, "netdev_features %b\n",
hw->netdev_features, NETIF_F_BITS);
ieee80211_announce(ic);
}
return (0);
err:
IMPROVE("TODO FIXME CLEANUP");
return (-EAGAIN);
}
void
linuxkpi_ieee80211_ifdetach(struct ieee80211_hw *hw)
{
struct lkpi_hw *lhw;
struct ieee80211com *ic;
lhw = HW_TO_LHW(hw);
ic = lhw->ic;
ieee80211_ifdetach(ic);
}
void
linuxkpi_ieee80211_iterate_interfaces(struct ieee80211_hw *hw,
enum ieee80211_iface_iter flags,
void(*iterfunc)(void *, uint8_t *, struct ieee80211_vif *),
void *arg)
{
struct lkpi_hw *lhw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
bool active, atomic, nin_drv;
lhw = HW_TO_LHW(hw);
if (flags & ~(IEEE80211_IFACE_ITER_NORMAL|
IEEE80211_IFACE_ITER_RESUME_ALL|
IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER|
IEEE80211_IFACE_ITER_ACTIVE|IEEE80211_IFACE_ITER__ATOMIC|
IEEE80211_IFACE_ITER__MTX)) {
ic_printf(lhw->ic, "XXX TODO %s flags(%#x) not yet supported.\n",
__func__, flags);
}
if ((flags & IEEE80211_IFACE_ITER__MTX) != 0)
lockdep_assert_wiphy(hw->wiphy);
active = (flags & IEEE80211_IFACE_ITER_ACTIVE) != 0;
atomic = (flags & IEEE80211_IFACE_ITER__ATOMIC) != 0;
nin_drv = (flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) != 0;
if (atomic) {
IMPROVE("LKPI_80211_LHW_LVIF_LOCK atomic assume to be rcu?");
LKPI_80211_LHW_LVIF_LOCK(lhw);
}
TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
struct ieee80211vap *vap;
vif = LVIF_TO_VIF(lvif);
/*
* If we want "active" interfaces, we need to distinguish on
* whether the driver knows about them or not to be able to
* handle the "resume" case correctly. Skip the ones the
* driver does not know about.
*/
if (active && !lvif->added_to_drv &&
(flags & IEEE80211_IFACE_ITER_RESUME_ALL) != 0)
continue;
/*
* If we shall skip interfaces not added to the driver do so
* if we haven't yet.
*/
if (nin_drv && !lvif->added_to_drv)
continue;
/*
* Run the iterator function if we are either not asking
* asking for active only or if the VAP is "running".
*/
/* XXX-BZ probably should have state in the lvif as well. */
vap = LVIF_TO_VAP(lvif);
if (!active || (vap->iv_state != IEEE80211_S_INIT))
iterfunc(arg, vif->addr, vif);
}
if (atomic)
LKPI_80211_LHW_LVIF_UNLOCK(lhw);
}
static void
lkpi_ieee80211_iterate_keys(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
ieee80211_keyix keyix, struct lkpi_sta *lsta,
void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_vif *,
struct ieee80211_sta *, struct ieee80211_key_conf *, void *),
void *arg)
{
if (!lsta->added_to_drv)
return;
if (lsta->kc[keyix] == NULL)
return;
iterfunc(hw, vif, LSTA_TO_STA(lsta), lsta->kc[keyix], arg);
}
void
linuxkpi_ieee80211_iterate_keys(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_vif *,
struct ieee80211_sta *, struct ieee80211_key_conf *, void *),
void *arg, bool rcu)
{
struct lkpi_sta *lsta;
struct lkpi_vif *lvif;
lvif = VIF_TO_LVIF(vif);
if (rcu) {
rcu_read_lock_held(); /* XXX-BZ is this correct? */
if (vif == NULL) {
TODO();
} else {
list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc);
keyix++)
lkpi_ieee80211_iterate_keys(hw, vif,
keyix, lsta, iterfunc, arg);
}
}
} else {
TODO("Used by suspend/resume; order of keys as installed to "
"firmware is important; we'll need to rewrite some code for that");
lockdep_assert_wiphy(hw->wiphy);
if (vif == NULL) {
TODO();
} else {
list_for_each_entry(lsta, &lvif->lsta_list, lsta_list) {
for (ieee80211_keyix keyix = 0; keyix < nitems(lsta->kc);
keyix++)
lkpi_ieee80211_iterate_keys(hw, vif,
keyix, lsta, iterfunc, arg);
}
}
}
}
void
linuxkpi_ieee80211_iterate_chan_contexts(struct ieee80211_hw *hw,
void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_chanctx_conf *,
void *),
void *arg)
{
struct lkpi_hw *lhw;
struct lkpi_chanctx *lchanctx;
KASSERT(hw != NULL && iterfunc != NULL,
("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg));
lhw = HW_TO_LHW(hw);
rcu_read_lock();
list_for_each_entry_rcu(lchanctx, &lhw->lchanctx_list, entry) {
if (!lchanctx->added_to_drv)
continue;
iterfunc(hw, &lchanctx->chanctx_conf, arg);
}
rcu_read_unlock();
}
void
linuxkpi_ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
void (*iterfunc)(void *, struct ieee80211_sta *), void *arg)
{
struct lkpi_hw *lhw;
struct lkpi_vif *lvif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
KASSERT(hw != NULL && iterfunc != NULL,
("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg));
lhw = HW_TO_LHW(hw);
LKPI_80211_LHW_LVIF_LOCK(lhw);
TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
rcu_read_lock();
list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
if (!lsta->added_to_drv)
continue;
sta = LSTA_TO_STA(lsta);
iterfunc(arg, sta);
}
rcu_read_unlock();
}
LKPI_80211_LHW_LVIF_UNLOCK(lhw);
}
struct linuxkpi_ieee80211_regdomain *
lkpi_get_linuxkpi_ieee80211_regdomain(size_t n)
{
struct linuxkpi_ieee80211_regdomain *regd;
regd = kzalloc(sizeof(*regd) + n * sizeof(struct ieee80211_reg_rule),
GFP_KERNEL);
return (regd);
}
int
linuxkpi_regulatory_set_wiphy_regd_sync(struct wiphy *wiphy,
struct linuxkpi_ieee80211_regdomain *regd)
{
struct lkpi_hw *lhw;
struct ieee80211com *ic;
struct ieee80211_regdomain *rd;
lhw = wiphy_priv(wiphy);
ic = lhw->ic;
rd = &ic->ic_regdomain;
if (rd->isocc[0] == '\0') {
rd->isocc[0] = regd->alpha2[0];
rd->isocc[1] = regd->alpha2[1];
}
TODO();
/* XXX-BZ finish the rest. */
return (0);
}
void
linuxkpi_ieee80211_scan_completed(struct ieee80211_hw *hw,
struct cfg80211_scan_info *info)
{
struct lkpi_hw *lhw;
struct ieee80211com *ic;
struct ieee80211_scan_state *ss;
lhw = wiphy_priv(hw->wiphy);
ic = lhw->ic;
ss = ic->ic_scan;
TRACE_SCAN(ic, "scan_flags %b info { %ju, %6D, aborted %d }",
lhw->scan_flags, LKPI_LHW_SCAN_BITS,
(uintmax_t)info->scan_start_tsf, info->tsf_bssid, ":",
info->aborted);
ieee80211_scan_done(ss->ss_vap);
LKPI_80211_LHW_SCAN_LOCK(lhw);
free(lhw->hw_req, M_LKPI80211);
lhw->hw_req = NULL;
lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING;
/* The wakeup(lhw) will be called from lkpi_ic_scan_end(). */
/* wakeup(lhw); */
LKPI_80211_LHW_SCAN_UNLOCK(lhw);
return;
}
static void
lkpi_80211_lhw_rxq_rx_one(struct lkpi_hw *lhw, struct mbuf *m)
{
struct ieee80211_node *ni;
#ifdef LKPI_80211_USE_MTAG
struct m_tag *mtag;
#endif
int ok;
ni = NULL;
#ifdef LKPI_80211_USE_MTAG
mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL);
if (mtag != NULL) {
struct lkpi_80211_tag_rxni *rxni;
rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
ni = rxni->ni;
}
#else
if (m->m_pkthdr.PH_loc.ptr != NULL) {
ni = m->m_pkthdr.PH_loc.ptr;
m->m_pkthdr.PH_loc.ptr = NULL;
}
#endif
if (ni != NULL) {
ok = ieee80211_input_mimo(ni, m);
ieee80211_free_node(ni); /* Release the reference. */
if (ok < 0)
m_freem(m);
} else {
ok = ieee80211_input_mimo_all(lhw->ic, m);
/* mbuf got consumed. */
}
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_RX)
printf("TRACE-RX: %s: handled frame type %#0x\n", __func__, ok);
#endif
}
static void
lkpi_80211_lhw_rxq_task(void *ctx, int pending)
{
struct lkpi_hw *lhw;
struct mbufq mq;
struct mbuf *m;
lhw = ctx;
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_RX)
printf("TRACE-RX: %s: lhw %p pending %d mbuf_qlen %d\n",
__func__, lhw, pending, mbufq_len(&lhw->rxq));
#endif
mbufq_init(&mq, IFQ_MAXLEN);
LKPI_80211_LHW_RXQ_LOCK(lhw);
mbufq_concat(&mq, &lhw->rxq);
LKPI_80211_LHW_RXQ_UNLOCK(lhw);
m = mbufq_dequeue(&mq);
while (m != NULL) {
lkpi_80211_lhw_rxq_rx_one(lhw, m);
m = mbufq_dequeue(&mq);
}
}
static void
lkpi_convert_rx_status(struct ieee80211_hw *hw, struct lkpi_sta *lsta,
struct ieee80211_rx_status *rx_status,
struct ieee80211_rx_stats *rx_stats,
uint8_t *rssip)
{
struct ieee80211_supported_band *supband;
struct rate_info rxrate;
int i;
uint8_t rssi;
memset(&rxrate, 0, sizeof(rxrate));
memset(rx_stats, 0, sizeof(*rx_stats));
rx_stats->r_flags = IEEE80211_R_NF | IEEE80211_R_RSSI;
/* XXX-BZ correct hardcoded noise floor, survey data? */
rx_stats->c_nf = -96;
if (ieee80211_hw_check(hw, SIGNAL_DBM) &&
!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
rssi = rx_status->signal;
else
rssi = rx_stats->c_nf;
/*
* net80211 signal strength data are in .5 dBm units relative to
* the current noise floor (see comment in ieee80211_node.h).
*/
rssi -= rx_stats->c_nf;
if (rssip != NULL)
*rssip = rssi;
rx_stats->c_rssi = rssi * 2;
rx_stats->r_flags |= IEEE80211_R_BAND;
rx_stats->c_band =
lkpi_nl80211_band_to_net80211_band(rx_status->band);
rx_stats->r_flags |= IEEE80211_R_FREQ | IEEE80211_R_IEEE;
rx_stats->c_freq = rx_status->freq;
rx_stats->c_ieee = ieee80211_mhz2ieee(rx_stats->c_freq, rx_stats->c_band);
rx_stats->c_rx_tsf = rx_status->mactime;
/* XXX RX_FLAG_MACTIME_IS_RTAP_TS64 ? */
if ((rx_status->flag & RX_FLAG_MACTIME) ==
(RX_FLAG_MACTIME_START|RX_FLAG_MACTIME_END)) {
rx_stats->r_flags |= IEEE80211_R_TSF64;
/* XXX RX_FLAG_MACTIME_PLCP_START ? */
if ((rx_status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_START)
rx_stats->r_flags |= IEEE80211_R_TSF_START;
if ((rx_status->flag & RX_FLAG_MACTIME) == RX_FLAG_MACTIME_END)
rx_stats->r_flags |= IEEE80211_R_TSF_END;
/* XXX-BZ if TSF_END will net80211 do the unwind of time? */
}
if (rx_status->chains != 0) {
int cc;
int8_t crssi;
rx_stats->c_chain = rx_status->chains;
rx_stats->r_flags |= IEEE80211_R_C_CHAIN;
cc = 0;
for (i = 0; i < nitems(rx_status->chain_signal); i++) {
if (!(rx_status->chains & BIT(i)))
continue;
crssi = rx_status->chain_signal[i];
crssi -= rx_stats->c_nf;
rx_stats->c_rssi_ctl[i] = crssi * 2;
rx_stats->c_rssi_ext[i] = crssi * 2; /* XXX _ext ??? ATH thing? */
/* We currently only have the global noise floor value. */
rx_stats->c_nf_ctl[i] = rx_stats->c_nf;
rx_stats->c_nf_ext[i] = rx_stats->c_nf;
cc++;
}
if (cc > 0)
rx_stats->r_flags |= (IEEE80211_R_C_NF | IEEE80211_R_C_RSSI);
}
/* XXX-NET80211 We are not going to populate c_phytype! */
switch (rx_status->encoding) {
case RX_ENC_LEGACY:
{
uint32_t legacy = 0;
supband = hw->wiphy->bands[rx_status->band];
if (supband != NULL)
legacy = supband->bitrates[rx_status->rate_idx].bitrate;
rx_stats->c_rate = legacy;
rxrate.legacy = legacy;
/* Is there a LinuxKPI way of reporting IEEE80211_RX_F_CCK / _OFDM? */
break;
}
case RX_ENC_HT:
rx_stats->c_pktflags |= IEEE80211_RX_F_HT;
rx_stats->c_rate = rx_status->rate_idx; /* mcs */
rxrate.flags |= RATE_INFO_FLAGS_MCS;
rxrate.mcs = rx_status->rate_idx;
if ((rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI) != 0) {
rx_stats->c_pktflags |= IEEE80211_RX_F_SHORTGI;
rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
}
break;
case RX_ENC_VHT:
rx_stats->c_pktflags |= IEEE80211_RX_F_VHT;
rx_stats->c_rate = rx_status->rate_idx; /* mcs */
rx_stats->c_vhtnss = rx_status->nss;
rxrate.flags |= RATE_INFO_FLAGS_VHT_MCS;
rxrate.mcs = rx_status->rate_idx;
rxrate.nss = rx_status->nss;
if ((rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI) != 0) {
rx_stats->c_pktflags |= IEEE80211_RX_F_SHORTGI;
rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
}
break;
case RX_ENC_HE:
rxrate.flags |= RATE_INFO_FLAGS_HE_MCS;
rxrate.mcs = rx_status->rate_idx;
rxrate.nss = rx_status->nss;
/* XXX TODO */
TODO("net80211 has not matching encoding for %u", rx_status->encoding);
break;
case RX_ENC_EHT:
rxrate.flags |= RATE_INFO_FLAGS_EHT_MCS;
rxrate.mcs = rx_status->rate_idx;
rxrate.nss = rx_status->nss;
/* XXX TODO */
TODO("net80211 has not matching encoding for %u", rx_status->encoding);
break;
}
rxrate.bw = rx_status->bw;
switch (rx_status->bw) {
case RATE_INFO_BW_20:
rx_stats->c_width = IEEE80211_RX_FW_20MHZ;
break;
case RATE_INFO_BW_40:
rx_stats->c_width = IEEE80211_RX_FW_40MHZ;
break;
case RATE_INFO_BW_80:
rx_stats->c_width = IEEE80211_RX_FW_80MHZ;
break;
case RATE_INFO_BW_160:
rx_stats->c_width = IEEE80211_RX_FW_160MHZ;
break;
case RATE_INFO_BW_320:
case RATE_INFO_BW_HE_RU:
case RATE_INFO_BW_EHT_RU:
case RATE_INFO_BW_5:
case RATE_INFO_BW_10:
TODO("net80211 has not matching bandwidth for %u", rx_status->bw);
break;
}
if ((rx_status->enc_flags & RX_ENC_FLAG_LDPC) != 0)
rx_stats->c_pktflags |= IEEE80211_RX_F_LDPC;
if ((rx_status->enc_flags & RX_ENC_FLAG_STBC_MASK) != 0)
rx_stats->c_pktflags |= IEEE80211_RX_F_STBC;
/*
* We only need these for LKPI_80211_HW_CRYPTO in theory but in
* case the hardware does something we do not expect always leave
* these enabled. Leaving this commant as documentation for the || 1.
*/
#if defined(LKPI_80211_HW_CRYPTO) || 1
if (rx_status->flag & RX_FLAG_DECRYPTED) {
rx_stats->c_pktflags |= IEEE80211_RX_F_DECRYPTED;
/* Only valid if decrypted is set. */
if (rx_status->flag & RX_FLAG_PN_VALIDATED)
rx_stats->c_pktflags |= IEEE80211_RX_F_PN_VALIDATED;
}
if (rx_status->flag & RX_FLAG_IV_STRIPPED)
rx_stats->c_pktflags |= IEEE80211_RX_F_IV_STRIP;
if (rx_status->flag & RX_FLAG_ICV_STRIPPED)
rx_stats->c_pktflags |= IEEE80211_RX_F_ICV_STRIP;
if (rx_status->flag & RX_FLAG_MIC_STRIPPED)
rx_stats->c_pktflags |= IEEE80211_RX_F_MIC_STRIP;
if (rx_status->flag & RX_FLAG_MMIC_STRIPPED)
rx_stats->c_pktflags |= IEEE80211_RX_F_MMIC_STRIP;
if (rx_status->flag & RX_FLAG_MMIC_ERROR)
rx_stats->c_pktflags |= IEEE80211_RX_F_FAIL_MMIC;
if (rx_status->flag & RX_FLAG_FAILED_FCS_CRC)
rx_stats->c_pktflags |= IEEE80211_RX_F_FAIL_FCSCRC;
#endif
/* Fill in some sinfo bits to fill gaps not reported byt the driver. */
if (lsta != NULL) {
memcpy(&lsta->sinfo.rxrate, &rxrate, sizeof(rxrate));
lsta->sinfo.filled |= BIT_ULL(NL80211_STA_INFO_RX_BITRATE);
if (rx_status->chains != 0) {
lsta->sinfo.chains = rx_status->chains;
memcpy(lsta->sinfo.chain_signal, rx_status->chain_signal,
sizeof(lsta->sinfo.chain_signal));
lsta->sinfo.filled |= BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL);
}
}
}
#ifdef LINUXKPI_DEBUG_80211
static void
lkpi_rx_log_beacon(struct mbuf *m, struct lkpi_hw *lhw,
struct ieee80211_rx_status *rx_status)
{
struct ieee80211_mgmt *f;
uint8_t *e;
char ssid[IEEE80211_NWID_LEN * 4 + 1];
memset(ssid, '\0', sizeof(ssid));
f = mtod(m, struct ieee80211_mgmt *);
e = f->u.beacon.variable;
/*
* Usually SSID is right after the fixed part and for debugging we will
* be fine should we miss it if it is not.
*/
while ((e - (uint8_t *)f) < m->m_len) {
if (*e == IEEE80211_ELEMID_SSID)
break;
e += (2 + *(e + 1));
}
if (*e == IEEE80211_ELEMID_SSID) {
int i, len;
char *p;
p = ssid;
len = m->m_len - ((e + 2) - (uint8_t *)f);
if (len > *(e + 1))
len = *(e + 1);
e += 2;
for (i = 0; i < len; i++) {
/* Printable character? */
if (*e >= 0x20 && *e < 0x7f) {
*p++ = *e++;
} else {
snprintf(p, 5, "%#04x", *e++);
p += 4;
}
}
*p = '\0';
}
/* We print skb, skb->data, m as we are seeing 'ghost beacons'. */
TRACE_SCAN_BEACON(lhw->ic, "Beacon: scan_flags %b, band %s freq %u chan %-4d "
"len %d { %#06x %#06x %6D %6D %6D %#06x %ju %u %#06x SSID '%s' }",
lhw->scan_flags, LKPI_LHW_SCAN_BITS,
lkpi_nl80211_band_name(rx_status->band), rx_status->freq,
linuxkpi_ieee80211_frequency_to_channel(rx_status->freq, 0),
m->m_pkthdr.len, f->frame_control, f->duration_id,
f->da, ":", f->sa, ":", f->bssid, ":", f->seq_ctrl,
(uintmax_t)le64_to_cpu(f->u.beacon.timestamp),
le16_to_cpu(f->u.beacon.beacon_int),
le16_to_cpu(f->u.beacon.capab_info), ssid);
}
#endif
/* For %list see comment towards the end of the function. */
void
linuxkpi_ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ieee80211_sta *sta, struct napi_struct *napi __unused,
struct list_head *list __unused)
{
struct lkpi_hw *lhw;
struct ieee80211com *ic;
struct mbuf *m;
struct skb_shared_info *shinfo;
struct ieee80211_rx_status *rx_status;
struct ieee80211_rx_stats rx_stats;
struct ieee80211_node *ni;
struct ieee80211vap *vap;
struct ieee80211_hdr *hdr;
struct lkpi_sta *lsta;
int i, offset, ok, error;
uint8_t rssi;
bool is_beacon;
lhw = HW_TO_LHW(hw);
ic = lhw->ic;
if (skb->len < 2) {
/* Need 80211 stats here. */
counter_u64_add(ic->ic_ierrors, 1);
IMPROVE();
goto err;
}
/*
* For now do the data copy; we can later improve things. Might even
* have an mbuf backing the skb data then?
*/
m = m_get3(skb->len, M_NOWAIT, MT_DATA, M_PKTHDR);
if (m == NULL) {
counter_u64_add(ic->ic_ierrors, 1);
goto err;
}
m_copyback(m, 0, skb->tail - skb->data, skb->data);
shinfo = skb_shinfo(skb);
offset = m->m_len;
for (i = 0; i < shinfo->nr_frags; i++) {
m_copyback(m, offset, shinfo->frags[i].size,
(uint8_t *)linux_page_address(shinfo->frags[i].page) +
shinfo->frags[i].offset);
offset += shinfo->frags[i].size;
}
rx_status = IEEE80211_SKB_RXCB(skb);
hdr = (void *)skb->data;
is_beacon = ieee80211_is_beacon(hdr->frame_control);
#ifdef LINUXKPI_DEBUG_80211
/*
* We use the mbuf here as otherwise the variable part might
* be in skb frags.
*/
if (is_beacon && ((linuxkpi_debug_80211 & D80211_SCAN_BEACON) != 0))
lkpi_rx_log_beacon(m, lhw, rx_status);
if (is_beacon && (linuxkpi_debug_80211 & D80211_TRACE_RX_BEACONS) == 0 &&
(linuxkpi_debug_80211 & D80211_SCAN_BEACON) == 0)
goto no_trace_beacons;
if (linuxkpi_debug_80211 & D80211_TRACE_RX)
printf("TRACE-RX: %s: skb %p l/d/t-len (%u/%u/%u) "
"h %p d %p t %p e %p sh %p (%u) m %p plen %u len %u%s\n",
__func__, skb, skb->len, skb->data_len,
skb->truesize, skb->head, skb->data, skb->tail, skb->end,
shinfo, shinfo->nr_frags,
m, m->m_pkthdr.len, m->m_len, is_beacon ? " beacon" : "");
if (linuxkpi_debug_80211 & D80211_TRACE_RX_DUMP)
hexdump(mtod(m, const void *), m->m_len, "RX (raw) ", 0);
/* Implement a dump_rxcb() !!! */
if ((linuxkpi_debug_80211 & D80211_TRACE_RX) != 0 ||
(linuxkpi_debug_80211 & D80211_SCAN_BEACON) != 0)
printf("TRACE-RX: %s: RXCB: %ju %ju %u, %b, %u, %#0x, %#0x, "
"%u band %u, %u { %d %d %d %d }, %d, %#x %#x %#x %#x %u %u %u\n",
__func__,
(uintmax_t)rx_status->boottime_ns,
(uintmax_t)rx_status->mactime,
rx_status->device_timestamp,
rx_status->flag, IEEE80211_RX_STATUS_FLAGS_BITS,
rx_status->freq,
rx_status->bw,
rx_status->encoding,
rx_status->ampdu_reference,
rx_status->band,
rx_status->chains,
rx_status->chain_signal[0],
rx_status->chain_signal[1],
rx_status->chain_signal[2],
rx_status->chain_signal[3],
rx_status->signal,
rx_status->enc_flags,
rx_status->he_dcm,
rx_status->he_gi,
rx_status->he_ru,
rx_status->zero_length_psdu_type,
rx_status->nss,
rx_status->rate_idx);
no_trace_beacons:
#endif
lsta = NULL;
if (sta != NULL) {
lsta = STA_TO_LSTA(sta);
ni = ieee80211_ref_node(lsta->ni);
} else {
struct ieee80211_frame_min *wh;
wh = mtod(m, struct ieee80211_frame_min *);
ni = ieee80211_find_rxnode(ic, wh);
if (ni != NULL)
lsta = ni->ni_drv_data;
}
rssi = 0;
lkpi_convert_rx_status(hw, lsta, rx_status, &rx_stats, &rssi);
ok = ieee80211_add_rx_params(m, &rx_stats);
if (ok == 0) {
m_freem(m);
counter_u64_add(ic->ic_ierrors, 1);
goto err;
}
if (ni != NULL)
vap = ni->ni_vap;
else
/*
* XXX-BZ can we improve this by looking at the frame hdr
* or other meta-data passed up?
*/
vap = TAILQ_FIRST(&ic->ic_vaps);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_RX)
printf("TRACE-RX: %s: sta %p lsta %p state %d ni %p vap %p%s\n",
__func__, sta, lsta, (lsta != NULL) ? lsta->state : -1,
ni, vap, is_beacon ? " beacon" : "");
#endif
if (ni != NULL && vap != NULL && is_beacon &&
rx_status->device_timestamp > 0 &&
m->m_pkthdr.len >= sizeof(struct ieee80211_frame)) {
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
struct ieee80211_frame *wh;
wh = mtod(m, struct ieee80211_frame *);
if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))
goto skip_device_ts;
lvif = VAP_TO_LVIF(vap);
vif = LVIF_TO_VIF(lvif);
IMPROVE("TIMING_BEACON_ONLY?");
/* mac80211 specific (not net80211) so keep it here. */
vif->bss_conf.sync_device_ts = rx_status->device_timestamp;
/*
* net80211 should take care of the other information (sync_tsf,
* sync_dtim_count) as otherwise we need to parse the beacon.
*/
skip_device_ts:
;
}
if (vap != NULL && vap->iv_state > IEEE80211_S_INIT &&
ieee80211_radiotap_active_vap(vap)) {
struct lkpi_radiotap_rx_hdr *rtap;
rtap = &lhw->rtap_rx;
rtap->wr_tsft = rx_status->device_timestamp;
rtap->wr_flags = 0;
if (rx_status->enc_flags & RX_ENC_FLAG_SHORTPRE)
rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
if (rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI)
rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTGI;
#if 0 /* .. or it does not given we strip it below. */
if (ieee80211_hw_check(hw, RX_INCLUDES_FCS))
rtap->wr_flags |= IEEE80211_RADIOTAP_F_FCS;
#endif
if (rx_status->flag & RX_FLAG_FAILED_FCS_CRC)
rtap->wr_flags |= IEEE80211_RADIOTAP_F_BADFCS;
rtap->wr_rate = 0;
IMPROVE();
/* XXX TODO status->encoding / rate_index / bw */
rtap->wr_chan_freq = htole16(rx_stats.c_freq);
if (ic->ic_curchan->ic_ieee == rx_stats.c_ieee)
rtap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
rtap->wr_dbm_antsignal = rssi;
rtap->wr_dbm_antnoise = rx_stats.c_nf;
}
if (ieee80211_hw_check(hw, RX_INCLUDES_FCS))
m_adj(m, -IEEE80211_CRC_LEN);
#if 0
if (list != NULL) {
/*
* Normally this would be queued up and delivered by
* netif_receive_skb_list(), napi_gro_receive(), or the like.
* See mt76::mac80211.c as only current possible consumer.
*/
IMPROVE("we simply pass the packet to net80211 to deal with.");
}
#endif
/* Attach meta-information to the mbuf for the deferred RX path. */
if (ni != NULL) {
#ifdef LKPI_80211_USE_MTAG
struct m_tag *mtag;
struct lkpi_80211_tag_rxni *rxni;
mtag = m_tag_alloc(MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI,
sizeof(*rxni), IEEE80211_M_NOWAIT);
if (mtag == NULL) {
m_freem(m);
counter_u64_add(ic->ic_ierrors, 1);
goto err;
}
rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
rxni->ni = ni; /* We hold a reference. */
m_tag_prepend(m, mtag);
#else
m->m_pkthdr.PH_loc.ptr = ni; /* We hold a reference. */
#endif
}
LKPI_80211_LHW_RXQ_LOCK(lhw);
if (lhw->rxq_stopped) {
LKPI_80211_LHW_RXQ_UNLOCK(lhw);
m_freem(m);
counter_u64_add(ic->ic_ierrors, 1);
goto err;
}
error = mbufq_enqueue(&lhw->rxq, m);
if (error != 0) {
LKPI_80211_LHW_RXQ_UNLOCK(lhw);
m_freem(m);
counter_u64_add(ic->ic_ierrors, 1);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_RX)
ic_printf(ni->ni_ic, "%s: mbufq_enqueue failed: %d\n",
__func__, error);
#endif
goto err;
}
taskqueue_enqueue(taskqueue_thread, &lhw->rxq_task);
LKPI_80211_LHW_RXQ_UNLOCK(lhw);
IMPROVE();
err:
/* The skb is ours so we can free it :-) */
kfree_skb(skb);
}
uint8_t
linuxkpi_ieee80211_get_tid(struct ieee80211_hdr *hdr, bool nonqos_ok)
{
const struct ieee80211_frame *wh;
uint8_t tid;
/* Linux seems to assume this is a QOS-Data-Frame */
KASSERT(nonqos_ok || ieee80211_is_data_qos(hdr->frame_control),
("%s: hdr %p fc %#06x not qos_data\n", __func__, hdr,
hdr->frame_control));
wh = (const struct ieee80211_frame *)hdr;
tid = ieee80211_gettid(wh);
KASSERT(nonqos_ok || tid == (tid & IEEE80211_QOS_TID), ("%s: tid %u "
"not expected (%u?)\n", __func__, tid, IEEE80211_NONQOS_TID));
return (tid);
}
/* -------------------------------------------------------------------------- */
static void
lkpi_wiphy_work(struct work_struct *work)
{
struct lkpi_wiphy *lwiphy;
struct wiphy *wiphy;
struct wiphy_work *wk;
lwiphy = container_of(work, struct lkpi_wiphy, wwk);
wiphy = LWIPHY_TO_WIPHY(lwiphy);
wiphy_lock(wiphy);
LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
wk = list_first_entry_or_null(&lwiphy->wwk_list, struct wiphy_work, entry);
/* If there is nothing we do nothing. */
if (wk == NULL) {
LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
wiphy_unlock(wiphy);
return;
}
list_del_init(&wk->entry);
/* More work to do? */
if (!list_empty(&lwiphy->wwk_list))
schedule_work(work);
LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
/* Finally call the (*wiphy_work_fn)() function. */
wk->fn(wiphy, wk);
wiphy_unlock(wiphy);
}
void
linuxkpi_wiphy_work_queue(struct wiphy *wiphy, struct wiphy_work *wwk)
{
struct lkpi_wiphy *lwiphy;
lwiphy = WIPHY_TO_LWIPHY(wiphy);
LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
/* Do not double-queue. */
if (list_empty(&wwk->entry))
list_add_tail(&wwk->entry, &lwiphy->wwk_list);
LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
/*
* See how ieee80211_queue_work() work continues in Linux or if things
* migrate here over time?
* Use a system queue from linux/workqueue.h for now.
*/
queue_work(system_wq, &lwiphy->wwk);
}
void
linuxkpi_wiphy_work_cancel(struct wiphy *wiphy, struct wiphy_work *wwk)
{
struct lkpi_wiphy *lwiphy;
lwiphy = WIPHY_TO_LWIPHY(wiphy);
LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
/* Only cancel if queued. */
if (!list_empty(&wwk->entry))
list_del_init(&wwk->entry);
LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
}
void
linuxkpi_wiphy_work_flush(struct wiphy *wiphy, struct wiphy_work *wwk)
{
struct lkpi_wiphy *lwiphy;
struct wiphy_work *wk;
lwiphy = WIPHY_TO_LWIPHY(wiphy);
LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
/* If wwk is unset, flush everything; called when wiphy is shut down. */
if (wwk != NULL && list_empty(&wwk->entry)) {
LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
return;
}
while (!list_empty(&lwiphy->wwk_list)) {
wk = list_first_entry(&lwiphy->wwk_list, struct wiphy_work,
entry);
list_del_init(&wk->entry);
LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
wk->fn(wiphy, wk);
LKPI_80211_LWIPHY_WORK_LOCK(lwiphy);
if (wk == wwk)
break;
}
LKPI_80211_LWIPHY_WORK_UNLOCK(lwiphy);
}
void
lkpi_wiphy_delayed_work_timer(struct timer_list *tl)
{
struct wiphy_delayed_work *wdwk;
wdwk = timer_container_of(wdwk, tl, timer);
wiphy_work_queue(wdwk->wiphy, &wdwk->work);
}
void
linuxkpi_wiphy_delayed_work_queue(struct wiphy *wiphy,
struct wiphy_delayed_work *wdwk, unsigned long delay)
{
if (delay == 0) {
/* Run right away. */
del_timer(&wdwk->timer);
wiphy_work_queue(wiphy, &wdwk->work);
} else {
wdwk->wiphy = wiphy;
mod_timer(&wdwk->timer, jiffies + delay);
}
}
void
linuxkpi_wiphy_delayed_work_cancel(struct wiphy *wiphy,
struct wiphy_delayed_work *wdwk)
{
del_timer_sync(&wdwk->timer);
wiphy_work_cancel(wiphy, &wdwk->work);
}
void
linuxkpi_wiphy_delayed_work_flush(struct wiphy *wiphy,
struct wiphy_delayed_work *wdwk)
{
lockdep_assert_held(&wiphy->mtx);
del_timer_sync(&wdwk->timer);
wiphy_work_flush(wiphy, &wdwk->work);
}
/* -------------------------------------------------------------------------- */
struct wiphy *
linuxkpi_wiphy_new(const struct cfg80211_ops *ops, size_t priv_len)
{
struct lkpi_wiphy *lwiphy;
struct wiphy *wiphy;
lwiphy = kzalloc(sizeof(*lwiphy) + priv_len, GFP_KERNEL);
if (lwiphy == NULL)
return (NULL);
lwiphy->ops = ops;
LKPI_80211_LWIPHY_WORK_LOCK_INIT(lwiphy);
INIT_LIST_HEAD(&lwiphy->wwk_list);
INIT_WORK(&lwiphy->wwk, lkpi_wiphy_work);
wiphy = LWIPHY_TO_WIPHY(lwiphy);
mutex_init(&wiphy->mtx);
TODO();
return (wiphy);
}
void
linuxkpi_wiphy_free(struct wiphy *wiphy)
{
struct lkpi_wiphy *lwiphy;
if (wiphy == NULL)
return;
linuxkpi_wiphy_work_flush(wiphy, NULL);
mutex_destroy(&wiphy->mtx);
lwiphy = WIPHY_TO_LWIPHY(wiphy);
LKPI_80211_LWIPHY_WORK_LOCK_DESTROY(lwiphy);
kfree(lwiphy);
}
static void
lkpi_wiphy_band_annotate(struct wiphy *wiphy)
{
int band;
for (band = 0; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *supband;
int i;
supband = wiphy->bands[band];
if (supband == NULL)
continue;
switch (band) {
case NL80211_BAND_2GHZ:
case NL80211_BAND_5GHZ:
break;
default:
#ifdef LINUXKPI_DEBUG_80211
IMPROVE("band %d(%s) not yet supported",
band, lkpi_nl80211_band_name(band));
/* For bands added here, also check lkpi_lsta_alloc(). */
#endif
continue;
}
for (i = 0; i < supband->n_bitrates; i++) {
switch (band) {
case NL80211_BAND_2GHZ:
switch (supband->bitrates[i].bitrate) {
case 110:
case 55:
case 20:
case 10:
supband->bitrates[i].flags |=
IEEE80211_RATE_MANDATORY_B;
/* FALLTHROUGH */
/* 11g only */
case 240:
case 120:
case 60:
supband->bitrates[i].flags |=
IEEE80211_RATE_MANDATORY_G;
break;
}
break;
case NL80211_BAND_5GHZ:
switch (supband->bitrates[i].bitrate) {
case 240:
case 120:
case 60:
supband->bitrates[i].flags |=
IEEE80211_RATE_MANDATORY_A;
break;
}
break;
}
}
}
}
int
linuxkpi_80211_wiphy_register(struct wiphy *wiphy)
{
TODO("Lots of checks and initialization");
lkpi_wiphy_band_annotate(wiphy);
return (0);
}
static uint32_t
lkpi_cfg80211_calculate_bitrate_ht(struct rate_info *rate)
{
TODO("cfg80211_calculate_bitrate_ht");
return (rate->legacy);
}
static uint32_t
lkpi_cfg80211_calculate_bitrate_vht(struct rate_info *rate)
{
TODO("cfg80211_calculate_bitrate_vht");
return (rate->legacy);
}
uint32_t
linuxkpi_cfg80211_calculate_bitrate(struct rate_info *rate)
{
/* Beware: order! */
if (rate->flags & RATE_INFO_FLAGS_MCS)
return (lkpi_cfg80211_calculate_bitrate_ht(rate));
if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)
return (lkpi_cfg80211_calculate_bitrate_vht(rate));
IMPROVE("HE/EHT/...");
return (rate->legacy);
}
uint32_t
linuxkpi_ieee80211_channel_to_frequency(uint32_t channel,
enum nl80211_band band)
{
switch (band) {
case NL80211_BAND_2GHZ:
return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_2GHZ));
break;
case NL80211_BAND_5GHZ:
return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_5GHZ));
break;
default:
/* XXX abort, retry, error, panic? */
break;
}
return (0);
}
uint32_t
linuxkpi_ieee80211_frequency_to_channel(uint32_t freq, uint32_t flags __unused)
{
return (ieee80211_mhz2ieee(freq, 0));
}
#if 0
static struct lkpi_sta *
lkpi_find_lsta_by_ni(struct lkpi_vif *lvif, struct ieee80211_node *ni)
{
struct lkpi_sta *lsta, *temp;
rcu_read_lock();
list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
if (lsta->ni == ni) {
rcu_read_unlock();
return (lsta);
}
}
rcu_read_unlock();
return (NULL);
}
#endif
struct ieee80211_sta *
linuxkpi_ieee80211_find_sta(struct ieee80211_vif *vif, const u8 *peer)
{
struct lkpi_vif *lvif;
struct lkpi_sta *lsta;
struct ieee80211_sta *sta;
lvif = VIF_TO_LVIF(vif);
rcu_read_lock();
list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
sta = LSTA_TO_STA(lsta);
if (IEEE80211_ADDR_EQ(sta->addr, peer)) {
rcu_read_unlock();
return (sta);
}
}
rcu_read_unlock();
return (NULL);
}
struct ieee80211_sta *
linuxkpi_ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw,
const uint8_t *addr, const uint8_t *ourvifaddr)
{
struct lkpi_hw *lhw;
struct lkpi_vif *lvif;
struct lkpi_sta *lsta;
struct ieee80211_vif *vif;
struct ieee80211_sta *sta;
lhw = wiphy_priv(hw->wiphy);
sta = NULL;
LKPI_80211_LHW_LVIF_LOCK(lhw);
TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
/* XXX-BZ check our address from the vif. */
vif = LVIF_TO_VIF(lvif);
if (ourvifaddr != NULL &&
!IEEE80211_ADDR_EQ(vif->addr, ourvifaddr))
continue;
sta = linuxkpi_ieee80211_find_sta(vif, addr);
if (sta != NULL)
break;
}
LKPI_80211_LHW_LVIF_UNLOCK(lhw);
if (sta != NULL) {
lsta = STA_TO_LSTA(sta);
if (!lsta->added_to_drv)
return (NULL);
}
return (sta);
}
struct sk_buff *
linuxkpi_ieee80211_tx_dequeue(struct ieee80211_hw *hw,
struct ieee80211_txq *txq)
{
struct lkpi_txq *ltxq;
struct lkpi_vif *lvif;
struct sk_buff *skb;
IMPROVE("wiphy_lock? or assert?");
skb = NULL;
ltxq = TXQ_TO_LTXQ(txq);
ltxq->seen_dequeue = true;
if (ltxq->stopped)
goto stopped;
lvif = VIF_TO_LVIF(ltxq->txq.vif);
if (lvif->hw_queue_stopped[ltxq->txq.ac]) {
ltxq->stopped = true;
goto stopped;
}
IMPROVE("hw(TX_FRAG_LIST)");
LKPI_80211_LTXQ_LOCK(ltxq);
skb = skb_dequeue(&ltxq->skbq);
if (skb != NULL)
ltxq->frms_dequeued++;
LKPI_80211_LTXQ_UNLOCK(ltxq);
stopped:
return (skb);
}
void
linuxkpi_ieee80211_txq_get_depth(struct ieee80211_txq *txq,
unsigned long *frame_cnt, unsigned long *byte_cnt)
{
struct lkpi_txq *ltxq;
struct sk_buff *skb;
unsigned long fc, bc;
ltxq = TXQ_TO_LTXQ(txq);
fc = bc = 0;
LKPI_80211_LTXQ_LOCK(ltxq);
skb_queue_walk(&ltxq->skbq, skb) {
fc++;
bc += skb->len;
}
LKPI_80211_LTXQ_UNLOCK(ltxq);
if (frame_cnt)
*frame_cnt = fc;
if (byte_cnt)
*byte_cnt = bc;
/* Validate that this is doing the correct thing. */
/* Should we keep track on en/dequeue? */
IMPROVE();
}
/*
* We are called from ieee80211_free_txskb() or ieee80211_tx_status().
* The latter tries to derive the success status from the info flags
* passed back from the driver. rawx_mit() saves the ni on the m and the
* m on the skb for us to be able to give feedback to net80211.
*/
static void
_lkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb,
int status)
{
struct ieee80211_node *ni;
struct mbuf *m;
if (skb == NULL)
return;
m = skb->m;
skb->m = NULL;
if (m != NULL) {
ni = m->m_pkthdr.PH_loc.ptr;
/* Status: 0 is ok, != 0 is error. */
ieee80211_tx_complete(ni, m, status);
/* ni & mbuf were consumed. */
}
}
void
linuxkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb,
int status)
{
_lkpi_ieee80211_free_txskb(hw, skb, status);
kfree_skb(skb);
}
void
linuxkpi_ieee80211_tx_status_ext(struct ieee80211_hw *hw,
struct ieee80211_tx_status *txstat)
{
struct sk_buff *skb;
struct ieee80211_tx_info *info, _info = { };
struct ieee80211_ratectl_tx_status txs;
struct ieee80211_node *ni;
int status;
skb = txstat->skb;
if (skb != NULL && skb->m != NULL) {
struct mbuf *m;
m = skb->m;
ni = m->m_pkthdr.PH_loc.ptr;
memset(&txs, 0, sizeof(txs));
} else {
ni = NULL;
}
/*
* If we have no info information on tx, set info to an all-zero struct
* to make the code (and debug output) simpler.
*/
info = txstat->info;
if (info == NULL)
info = &_info;
if (info->flags & IEEE80211_TX_STAT_ACK) {
status = 0; /* No error. */
txs.status = IEEE80211_RATECTL_TX_SUCCESS;
} else {
status = 1;
txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED;
}
if (ni != NULL) {
txs.pktlen = skb->len;
txs.flags |= IEEE80211_RATECTL_STATUS_PKTLEN;
if (info->status.rates[0].count > 1) {
txs.long_retries = info->status.rates[0].count - 1; /* 1 + retries in drivers. */
txs.flags |= IEEE80211_RATECTL_STATUS_LONG_RETRY;
}
#if 0 /* Unused in net80211 currently. */
/* XXX-BZ convert check .flags for MCS/VHT/.. */
txs.final_rate = info->status.rates[0].idx;
txs.flags |= IEEE80211_RATECTL_STATUS_FINAL_RATE;
#endif
if (info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID) {
txs.rssi = info->status.ack_signal; /* XXX-BZ CONVERT? */
txs.flags |= IEEE80211_RATECTL_STATUS_RSSI;
}
IMPROVE("only update rate if needed but that requires us to get a proper rate from mo_sta_statistics");
ieee80211_ratectl_tx_complete(ni, &txs);
ieee80211_ratectl_rate(ni->ni_vap->iv_bss, NULL, 0);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX) {
printf("TX-RATE: %s: long_retries %d\n", __func__,
txs.long_retries);
}
#endif
}
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_TX)
printf("TX-STATUS: %s: hw %p skb %p status %d : flags %#x "
"band %u hw_queue %u tx_time_est %d : "
"rates [ %u %u %#x, %u %u %#x, %u %u %#x, %u %u %#x ] "
"ack_signal %u ampdu_ack_len %u ampdu_len %u antenna %u "
"tx_time %u flags %#x "
"status_driver_data [ %p %p ]\n",
__func__, hw, skb, status, info->flags,
info->band, info->hw_queue, info->tx_time_est,
info->status.rates[0].idx, info->status.rates[0].count,
info->status.rates[0].flags,
info->status.rates[1].idx, info->status.rates[1].count,
info->status.rates[1].flags,
info->status.rates[2].idx, info->status.rates[2].count,
info->status.rates[2].flags,
info->status.rates[3].idx, info->status.rates[3].count,
info->status.rates[3].flags,
info->status.ack_signal, info->status.ampdu_ack_len,
info->status.ampdu_len, info->status.antenna,
info->status.tx_time, info->status.flags,
info->status.status_driver_data[0],
info->status.status_driver_data[1]);
#endif
if (txstat->free_list) {
_lkpi_ieee80211_free_txskb(hw, skb, status);
if (skb != NULL)
list_add_tail(&skb->list, txstat->free_list);
} else {
linuxkpi_ieee80211_free_txskb(hw, skb, status);
}
}
void
linuxkpi_ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct ieee80211_tx_status status;
memset(&status, 0, sizeof(status));
status.info = IEEE80211_SKB_CB(skb);
status.skb = skb;
/* sta, n_rates, rates, free_list? */
ieee80211_tx_status_ext(hw, &status);
}
/*
* This is an internal bandaid for the moment for the way we glue
* skbs and mbufs together for TX. Once we have skbs backed by
* mbufs this should go away.
* This is a public function but kept on the private KPI (lkpi_)
* and is not exposed by a header file.
*/
static void
lkpi_ieee80211_free_skb_mbuf(void *p)
{
struct ieee80211_node *ni;
struct mbuf *m;
if (p == NULL)
return;
m = (struct mbuf *)p;
M_ASSERTPKTHDR(m);
ni = m->m_pkthdr.PH_loc.ptr;
m->m_pkthdr.PH_loc.ptr = NULL;
if (ni != NULL)
ieee80211_free_node(ni);
m_freem(m);
}
void
linuxkpi_ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
struct delayed_work *w, int delay)
{
struct lkpi_hw *lhw;
/* Need to make sure hw is in a stable (non-suspended) state. */
IMPROVE();
lhw = HW_TO_LHW(hw);
queue_delayed_work(lhw->workq, w, delay);
}
void
linuxkpi_ieee80211_queue_work(struct ieee80211_hw *hw,
struct work_struct *w)
{
struct lkpi_hw *lhw;
/* Need to make sure hw is in a stable (non-suspended) state. */
IMPROVE();
lhw = HW_TO_LHW(hw);
queue_work(lhw->workq, w);
}
struct sk_buff *
linuxkpi_ieee80211_probereq_get(struct ieee80211_hw *hw, const uint8_t *addr,
const uint8_t *ssid, size_t ssid_len, size_t tailroom)
{
struct sk_buff *skb;
struct ieee80211_frame *wh;
uint8_t *p;
size_t len;
len = sizeof(*wh);
len += 2 + ssid_len;
skb = dev_alloc_skb(hw->extra_tx_headroom + len + tailroom);
if (skb == NULL)
return (NULL);
skb_reserve(skb, hw->extra_tx_headroom);
wh = skb_put_zero(skb, sizeof(*wh));
wh->i_fc[0] = IEEE80211_FC0_VERSION_0;
wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PROBE_REQ | IEEE80211_FC0_TYPE_MGT;
IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr);
IEEE80211_ADDR_COPY(wh->i_addr2, addr);
IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr);
p = skb_put(skb, 2 + ssid_len);
*p++ = IEEE80211_ELEMID_SSID;
*p++ = ssid_len;
if (ssid_len > 0)
memcpy(p, ssid, ssid_len);
return (skb);
}
struct sk_buff *
linuxkpi_ieee80211_pspoll_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct lkpi_vif *lvif;
struct ieee80211vap *vap;
struct sk_buff *skb;
struct ieee80211_frame_pspoll *psp;
uint16_t v;
skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*psp));
if (skb == NULL)
return (NULL);
skb_reserve(skb, hw->extra_tx_headroom);
lvif = VIF_TO_LVIF(vif);
vap = LVIF_TO_VAP(lvif);
psp = skb_put_zero(skb, sizeof(*psp));
psp->i_fc[0] = IEEE80211_FC0_VERSION_0;
psp->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PS_POLL | IEEE80211_FC0_TYPE_CTL;
v = htole16(vif->cfg.aid | 1<<15 | 1<<16);
memcpy(&psp->i_aid, &v, sizeof(v));
IEEE80211_ADDR_COPY(psp->i_bssid, vap->iv_bss->ni_macaddr);
IEEE80211_ADDR_COPY(psp->i_ta, vif->addr);
return (skb);
}
struct sk_buff *
linuxkpi_ieee80211_nullfunc_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int linkid, bool qos)
{
struct lkpi_vif *lvif;
struct ieee80211vap *vap;
struct sk_buff *skb;
struct ieee80211_frame *nullf;
IMPROVE("linkid");
skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*nullf));
if (skb == NULL)
return (NULL);
skb_reserve(skb, hw->extra_tx_headroom);
lvif = VIF_TO_LVIF(vif);
vap = LVIF_TO_VAP(lvif);
nullf = skb_put_zero(skb, sizeof(*nullf));
nullf->i_fc[0] = IEEE80211_FC0_VERSION_0;
nullf->i_fc[0] |= IEEE80211_FC0_SUBTYPE_NODATA | IEEE80211_FC0_TYPE_DATA;
nullf->i_fc[1] = IEEE80211_FC1_DIR_TODS;
IEEE80211_ADDR_COPY(nullf->i_addr1, vap->iv_bss->ni_bssid);
IEEE80211_ADDR_COPY(nullf->i_addr2, vif->addr);
IEEE80211_ADDR_COPY(nullf->i_addr3, vap->iv_bss->ni_macaddr);
return (skb);
}
struct wireless_dev *
linuxkpi_ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
{
struct lkpi_vif *lvif;
lvif = VIF_TO_LVIF(vif);
return (&lvif->wdev);
}
void
linuxkpi_ieee80211_connection_loss(struct ieee80211_vif *vif)
{
struct lkpi_vif *lvif;
struct ieee80211vap *vap;
enum ieee80211_state nstate;
int arg;
lvif = VIF_TO_LVIF(vif);
vap = LVIF_TO_VAP(lvif);
/*
* Go to init; otherwise we need to elaborately check state and
* handle accordingly, e.g., if in RUN we could call iv_bmiss.
* Let the statemachine handle all neccessary changes.
*/
nstate = IEEE80211_S_INIT;
arg = 0; /* Not a valid reason. */
ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s (synched %d, assoc %d "
"beacons %d dtim_period %d)\n", __func__, vif, vap,
ieee80211_state_name[vap->iv_state],
lvif->lvif_bss_synched, vif->cfg.assoc, lvif->beacons,
vif->bss_conf.dtim_period);
ieee80211_new_state(vap, nstate, arg);
}
void
linuxkpi_ieee80211_beacon_loss(struct ieee80211_vif *vif)
{
struct lkpi_vif *lvif;
struct ieee80211vap *vap;
lvif = VIF_TO_LVIF(vif);
vap = LVIF_TO_VAP(lvif);
ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s (synched %d, assoc %d "
"beacons %d dtim_period %d)\n", __func__, vif, vap,
ieee80211_state_name[vap->iv_state],
lvif->lvif_bss_synched, vif->cfg.assoc, lvif->beacons,
vif->bss_conf.dtim_period);
ieee80211_beacon_miss(vap->iv_ic);
}
/* -------------------------------------------------------------------------- */
void
linuxkpi_ieee80211_stop_queue(struct ieee80211_hw *hw, int qnum)
{
struct lkpi_hw *lhw;
struct lkpi_vif *lvif;
struct ieee80211_vif *vif;
int ac_count, ac;
KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n",
__func__, qnum, hw->queues, hw));
lhw = wiphy_priv(hw->wiphy);
/* See lkpi_ic_vap_create(). */
if (hw->queues >= IEEE80211_NUM_ACS)
ac_count = IEEE80211_NUM_ACS;
else
ac_count = 1;
LKPI_80211_LHW_LVIF_LOCK(lhw);
TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
vif = LVIF_TO_VIF(lvif);
for (ac = 0; ac < ac_count; ac++) {
IMPROVE_TXQ("LOCKING");
if (qnum == vif->hw_queue[ac]) {
#ifdef LINUXKPI_DEBUG_80211
/*
* For now log this to better understand
* how this is supposed to work.
*/
if (lvif->hw_queue_stopped[ac] &&
(linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0)
ic_printf(lhw->ic, "%s:%d: lhw %p hw %p "
"lvif %p vif %p ac %d qnum %d already "
"stopped\n", __func__, __LINE__,
lhw, hw, lvif, vif, ac, qnum);
#endif
lvif->hw_queue_stopped[ac] = true;
}
}
}
LKPI_80211_LHW_LVIF_UNLOCK(lhw);
}
void
linuxkpi_ieee80211_stop_queues(struct ieee80211_hw *hw)
{
int i;
IMPROVE_TXQ("Locking; do we need further info?");
for (i = 0; i < hw->queues; i++)
linuxkpi_ieee80211_stop_queue(hw, i);
}
static void
lkpi_ieee80211_wake_queues(struct ieee80211_hw *hw, int hwq)
{
struct lkpi_hw *lhw;
struct lkpi_vif *lvif;
struct lkpi_sta *lsta;
int ac_count, ac, tid;
/* See lkpi_ic_vap_create(). */
if (hw->queues >= IEEE80211_NUM_ACS)
ac_count = IEEE80211_NUM_ACS;
else
ac_count = 1;
lhw = wiphy_priv(hw->wiphy);
IMPROVE_TXQ("Locking");
LKPI_80211_LHW_LVIF_LOCK(lhw);
TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
struct ieee80211_vif *vif;
vif = LVIF_TO_VIF(lvif);
for (ac = 0; ac < ac_count; ac++) {
if (hwq == vif->hw_queue[ac]) {
/* XXX-BZ what about software scan? */
#ifdef LINUXKPI_DEBUG_80211
/*
* For now log this to better understand
* how this is supposed to work.
*/
if (!lvif->hw_queue_stopped[ac] &&
(linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0)
ic_printf(lhw->ic, "%s:%d: lhw %p hw %p "
"lvif %p vif %p ac %d hw_q not stopped\n",
__func__, __LINE__,
lhw, hw, lvif, vif, ac);
#endif
lvif->hw_queue_stopped[ac] = false;
rcu_read_lock();
list_for_each_entry_rcu(lsta, &lvif->lsta_list, lsta_list) {
struct ieee80211_sta *sta;
sta = LSTA_TO_STA(lsta);
for (tid = 0; tid < nitems(sta->txq); tid++) {
struct lkpi_txq *ltxq;
if (sta->txq[tid] == NULL)
continue;
if (sta->txq[tid]->ac != ac)
continue;
ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
if (!ltxq->stopped)
continue;
ltxq->stopped = false;
if (!skb_queue_empty(&ltxq->skbq))
lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid], false);
}
}
rcu_read_unlock();
}
}
}
LKPI_80211_LHW_LVIF_UNLOCK(lhw);
}
static void
lkpi_ieee80211_wake_queues_locked(struct ieee80211_hw *hw)
{
int i;
IMPROVE_TXQ("Is this all/enough here?");
for (i = 0; i < hw->queues; i++)
lkpi_ieee80211_wake_queues(hw, i);
}
void
linuxkpi_ieee80211_wake_queues(struct ieee80211_hw *hw)
{
struct lkpi_hw *lhw;
unsigned long flags;
lhw = HW_TO_LHW(hw);
spin_lock_irqsave(&lhw->txq_lock, flags);
lkpi_ieee80211_wake_queues_locked(hw);
spin_unlock_irqrestore(&lhw->txq_lock, flags);
}
void
linuxkpi_ieee80211_wake_queue(struct ieee80211_hw *hw, int qnum)
{
struct lkpi_hw *lhw;
unsigned long flags;
KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n",
__func__, qnum, hw->queues, hw));
lhw = HW_TO_LHW(hw);
spin_lock_irqsave(&lhw->txq_lock, flags);
lkpi_ieee80211_wake_queues(hw, qnum);
spin_unlock_irqrestore(&lhw->txq_lock, flags);
}
/* -------------------------------------------------------------------------- */
/* This is just hardware queues. */
/*
* Being called from the driver thus use _bh() locking.
*/
void
linuxkpi_ieee80211_txq_schedule_start(struct ieee80211_hw *hw, uint8_t ac)
{
struct lkpi_hw *lhw;
lhw = HW_TO_LHW(hw);
if (ac >= IEEE80211_NUM_ACS) {
ic_printf(lhw->ic, "%s: ac %u out of bounds.\n", __func__, ac);
return;
}
spin_lock_bh(&lhw->txq_scheduled_lock[ac]);
IMPROVE("check AIRTIME_FAIRNESS");
if (++lhw->txq_generation[ac] == 0)
lhw->txq_generation[ac]++;
spin_unlock_bh(&lhw->txq_scheduled_lock[ac]);
}
struct ieee80211_txq *
linuxkpi_ieee80211_next_txq(struct ieee80211_hw *hw, uint8_t ac)
{
struct lkpi_hw *lhw;
struct ieee80211_txq *txq;
struct lkpi_txq *ltxq;
lhw = HW_TO_LHW(hw);
txq = NULL;
if (ac >= IEEE80211_NUM_ACS) {
ic_printf(lhw->ic, "%s: ac %u out of bounds.\n", __func__, ac);
return (NULL);
}
spin_lock_bh(&lhw->txq_scheduled_lock[ac]);
/* Check that we are scheduled. */
if (lhw->txq_generation[ac] == 0)
goto out;
ltxq = TAILQ_FIRST(&lhw->txq_scheduled[ac]);
if (ltxq == NULL)
goto out;
if (ltxq->txq_generation == lhw->txq_generation[ac])
goto out;
IMPROVE("check AIRTIME_FAIRNESS");
TAILQ_REMOVE(&lhw->txq_scheduled[ac], ltxq, txq_entry);
ltxq->txq_generation = lhw->txq_generation[ac];
txq = &ltxq->txq;
TAILQ_ELEM_INIT(ltxq, txq_entry);
out:
spin_unlock_bh(&lhw->txq_scheduled_lock[ac]);
return (txq);
}
void linuxkpi_ieee80211_schedule_txq(struct ieee80211_hw *hw,
struct ieee80211_txq *txq, bool withoutpkts)
{
struct lkpi_hw *lhw;
struct lkpi_txq *ltxq;
bool ltxq_empty;
ltxq = TXQ_TO_LTXQ(txq);
/* Only schedule if work to do or asked to anyway. */
LKPI_80211_LTXQ_LOCK(ltxq);
ltxq_empty = skb_queue_empty(&ltxq->skbq);
LKPI_80211_LTXQ_UNLOCK(ltxq);
if (!withoutpkts && ltxq_empty)
goto out;
lhw = HW_TO_LHW(hw);
spin_lock_bh(&lhw->txq_scheduled_lock[txq->ac]);
/*
* Make sure we do not double-schedule. We do this by checking tqe_prev,
* the previous entry in our tailq. tqe_prev is always valid if this entry
* is queued, tqe_next may be NULL if this is the only element in the list.
*/
if (ltxq->txq_entry.tqe_prev != NULL)
goto unlock;
TAILQ_INSERT_TAIL(&lhw->txq_scheduled[txq->ac], ltxq, txq_entry);
unlock:
spin_unlock_bh(&lhw->txq_scheduled_lock[txq->ac]);
out:
return;
}
/* -------------------------------------------------------------------------- */
void
linuxkpi_ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
struct ieee80211_txq *txq)
{
struct lkpi_hw *lhw;
lhw = HW_TO_LHW(hw);
LKPI_80211_LHW_TXQ_LOCK(lhw);
ieee80211_txq_schedule_start(hw, txq->ac);
do {
struct lkpi_txq *ltxq;
struct ieee80211_txq *ntxq;
struct ieee80211_tx_control control;
struct sk_buff *skb;
ntxq = ieee80211_next_txq(hw, txq->ac);
if (ntxq == NULL)
break;
ltxq = TXQ_TO_LTXQ(ntxq);
memset(&control, 0, sizeof(control));
control.sta = ntxq->sta;
do {
skb = linuxkpi_ieee80211_tx_dequeue(hw, ntxq);
if (skb == NULL)
break;
ltxq->frms_tx++;
lkpi_80211_mo_tx(hw, &control, skb);
} while(1);
ieee80211_return_txq(hw, ntxq, false);
} while (1);
ieee80211_txq_schedule_end(hw, txq->ac);
LKPI_80211_LHW_TXQ_UNLOCK(lhw);
}
/* -------------------------------------------------------------------------- */
struct lkpi_cfg80211_bss {
u_int refcnt;
struct cfg80211_bss bss;
};
struct lkpi_cfg80211_get_bss_iter_lookup {
struct wiphy *wiphy;
struct linuxkpi_ieee80211_channel *chan;
const uint8_t *bssid;
const uint8_t *ssid;
size_t ssid_len;
enum ieee80211_bss_type bss_type;
enum ieee80211_privacy privacy;
/*
* Something to store a copy of the result as the net80211 scan cache
* is not refoucnted so a scan entry might go away any time.
*/
bool match;
struct cfg80211_bss *bss;
};
static void
lkpi_cfg80211_get_bss_iterf(void *arg, const struct ieee80211_scan_entry *se)
{
struct lkpi_cfg80211_get_bss_iter_lookup *lookup;
size_t ielen;
lookup = arg;
/* Do not try to find another match. */
if (lookup->match)
return;
/* Nothing to store result. */
if (lookup->bss == NULL)
return;
if (lookup->privacy != IEEE80211_PRIVACY_ANY) {
/* if (se->se_capinfo & IEEE80211_CAPINFO_PRIVACY) */
/* We have no idea what to compare to as the drivers only request ANY */
return;
}
if (lookup->bss_type != IEEE80211_BSS_TYPE_ANY) {
/* if (se->se_capinfo & (IEEE80211_CAPINFO_IBSS|IEEE80211_CAPINFO_ESS)) */
/* We have no idea what to compare to as the drivers only request ANY */
return;
}
if (lookup->chan != NULL) {
struct linuxkpi_ieee80211_channel *chan;
chan = linuxkpi_ieee80211_get_channel(lookup->wiphy,
se->se_chan->ic_freq);
if (chan == NULL || chan != lookup->chan)
return;
}
if (lookup->bssid && !IEEE80211_ADDR_EQ(lookup->bssid, se->se_bssid))
return;
if (lookup->ssid) {
if (lookup->ssid_len != se->se_ssid[1] ||
se->se_ssid[1] == 0)
return;
if (memcmp(lookup->ssid, se->se_ssid+2, lookup->ssid_len) != 0)
return;
}
ielen = se->se_ies.len;
lookup->bss->ies = malloc(sizeof(*lookup->bss->ies) + ielen,
M_LKPI80211, M_NOWAIT | M_ZERO);
if (lookup->bss->ies == NULL)
return;
lookup->bss->ies->data = (uint8_t *)lookup->bss->ies + sizeof(*lookup->bss->ies);
lookup->bss->ies->len = ielen;
if (ielen)
memcpy(lookup->bss->ies->data, se->se_ies.data, ielen);
lookup->match = true;
}
struct cfg80211_bss *
linuxkpi_cfg80211_get_bss(struct wiphy *wiphy, struct linuxkpi_ieee80211_channel *chan,
const uint8_t *bssid, const uint8_t *ssid, size_t ssid_len,
enum ieee80211_bss_type bss_type, enum ieee80211_privacy privacy)
{
struct lkpi_cfg80211_bss *lbss;
struct lkpi_cfg80211_get_bss_iter_lookup lookup;
struct lkpi_hw *lhw;
struct ieee80211vap *vap;
lhw = wiphy_priv(wiphy);
/* Let's hope we can alloc. */
lbss = malloc(sizeof(*lbss), M_LKPI80211, M_NOWAIT | M_ZERO);
if (lbss == NULL) {
ic_printf(lhw->ic, "%s: alloc failed.\n", __func__);
return (NULL);
}
lookup.wiphy = wiphy;
lookup.chan = chan;
lookup.bssid = bssid;
lookup.ssid = ssid;
lookup.ssid_len = ssid_len;
lookup.bss_type = bss_type;
lookup.privacy = privacy;
lookup.match = false;
lookup.bss = &lbss->bss;
IMPROVE("Iterate over all VAPs comparing perm_addr and addresses?");
vap = TAILQ_FIRST(&lhw->ic->ic_vaps);
ieee80211_scan_iterate(vap, lkpi_cfg80211_get_bss_iterf, &lookup);
if (!lookup.match) {
free(lbss, M_LKPI80211);
return (NULL);
}
refcount_init(&lbss->refcnt, 1);
return (&lbss->bss);
}
void
linuxkpi_cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss)
{
struct lkpi_cfg80211_bss *lbss;
lbss = container_of(bss, struct lkpi_cfg80211_bss, bss);
/* Free everything again on refcount ... */
if (refcount_release(&lbss->refcnt)) {
free(lbss->bss.ies, M_LKPI80211);
free(lbss, M_LKPI80211);
}
}
void
linuxkpi_cfg80211_bss_flush(struct wiphy *wiphy)
{
struct lkpi_hw *lhw;
struct ieee80211com *ic;
struct ieee80211vap *vap;
lhw = wiphy_priv(wiphy);
ic = lhw->ic;
/*
* If we haven't called ieee80211_ifattach() yet
* or there is no VAP, there are no scans to flush.
*/
if (ic == NULL ||
(lhw->sc_flags & LKPI_MAC80211_DRV_STARTED) == 0)
return;
/* Should only happen on the current one? Not seen it late enough. */
IEEE80211_LOCK(ic);
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
ieee80211_scan_flush(vap);
IEEE80211_UNLOCK(ic);
}
/* -------------------------------------------------------------------------- */
/*
* hw->conf get initialized/set in various places for us:
* - linuxkpi_ieee80211_alloc_hw(): flags
* - linuxkpi_ieee80211_ifattach(): chandef
* - lkpi_ic_vap_create(): listen_interval
* - lkpi_ic_set_channel(): chandef, flags
*/
int lkpi_80211_update_chandef(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *new)
{
struct cfg80211_chan_def *cd;
uint32_t changed;
int error;
changed = 0;
if (new == NULL || new->def.chan == NULL)
cd = NULL;
else
cd = &new->def;
if (cd && cd->chan != hw->conf.chandef.chan) {
/* Copy; the chan pointer is fine and will stay valid. */
hw->conf.chandef = *cd;
changed |= IEEE80211_CONF_CHANGE_CHANNEL;
}
IMPROVE("IEEE80211_CONF_CHANGE_PS, IEEE80211_CONF_CHANGE_POWER");
if (changed == 0)
return (0);
error = lkpi_80211_mo_config(hw, changed);
return (error);
}
/* -------------------------------------------------------------------------- */
MODULE_VERSION(linuxkpi_wlan, 1);
MODULE_DEPEND(linuxkpi_wlan, linuxkpi, 1, 1, 1);
MODULE_DEPEND(linuxkpi_wlan, wlan, 1, 1, 1);
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