cxgbe: reduce diffs with other branches.

Will help future MFCs from HEAD.

MFC after:	3 days

sys/dev/cxgbe/adapter.h

@@ -66,6 +66,17 @@ prefetch(void *x)
 #define prefetch(x)
 #endif
 
+#ifndef SYSCTL_ADD_UQUAD
+#define SYSCTL_ADD_UQUAD SYSCTL_ADD_QUAD
+#define sysctl_handle_64 sysctl_handle_quad
+#define CTLTYPE_U64 CTLTYPE_QUAD
+#endif
+
+#if (__FreeBSD_version >= 900030) || \
+    ((__FreeBSD_version >= 802507) && (__FreeBSD_version < 900000))
+#define SBUF_DRAIN 1
+#endif
+
 #ifdef __amd64__
 /* XXX: need systemwide bus_space_read_8/bus_space_write_8 */
 static __inline uint64_t

sys/dev/cxgbe/t4_l2t.c

@@ -259,6 +259,7 @@ t4_free_l2t(struct l2t_data *d)
 	return (0);
 }
 
+#ifdef SBUF_DRAIN
 static inline unsigned int
 vlan_prio(const struct l2t_entry *e)
 {
@@ -333,6 +334,7 @@ sysctl_l2t(SYSCTL_HANDLER_ARGS)
 
 	return (rc);
 }
+#endif
 
 #ifndef TCP_OFFLOAD_DISABLE
 static inline void
@@ -652,6 +654,11 @@ t4_l2t_get(struct port_info *pi, struct ifnet *ifp, struct sockaddr *sa)
 	} else
 		return (NULL);
 
+#ifndef VLAN_TAG
+	if (ifp->if_type == IFT_L2VLAN)
+		return (NULL);
+#endif
+
 	hash = addr_hash(addr, addr_len, ifp->if_index);
 
 	rw_wlock(&d->lock);
@@ -678,10 +685,12 @@ t4_l2t_get(struct port_info *pi, struct ifnet *ifp, struct sockaddr *sa)
 		e->v6 = (addr_len == 16);
 		e->lle = NULL;
 		atomic_store_rel_int(&e->refcnt, 1);
+#ifdef VLAN_TAG
 		if (ifp->if_type == IFT_L2VLAN)
 			VLAN_TAG(ifp, &e->vlan);
 		else
 			e->vlan = VLAN_NONE;
+#endif
 		e->next = d->l2tab[hash].first;
 		d->l2tab[hash].first = e;
 		mtx_unlock(&e->lock);

sys/dev/cxgbe/t4_l2t.h

@@ -67,7 +67,9 @@ struct l2t_entry *t4_l2t_alloc_switching(struct l2t_data *);
 int t4_l2t_set_switching(struct adapter *, struct l2t_entry *, uint16_t,
     uint8_t, uint8_t *);
 void t4_l2t_release(struct l2t_entry *);
+#ifdef SBUF_DRAIN
 int sysctl_l2t(SYSCTL_HANDLER_ARGS);
+#endif
 
 #ifndef TCP_OFFLOAD_DISABLE
 struct l2t_entry *t4_l2t_get(struct port_info *, struct ifnet *,

sys/dev/cxgbe/t4_main.c

@@ -309,6 +309,7 @@ static int sysctl_holdoff_pktc_idx(SYSCTL_HANDLER_ARGS);
 static int sysctl_qsize_rxq(SYSCTL_HANDLER_ARGS);
 static int sysctl_qsize_txq(SYSCTL_HANDLER_ARGS);
 static int sysctl_handle_t4_reg64(SYSCTL_HANDLER_ARGS);
+#ifdef SBUF_DRAIN
 static int sysctl_cctrl(SYSCTL_HANDLER_ARGS);
 static int sysctl_cpl_stats(SYSCTL_HANDLER_ARGS);
 static int sysctl_ddp_stats(SYSCTL_HANDLER_ARGS);
@@ -324,6 +325,7 @@ static int sysctl_tcp_stats(SYSCTL_HANDLER_ARGS);
 static int sysctl_tids(SYSCTL_HANDLER_ARGS);
 static int sysctl_tp_err_stats(SYSCTL_HANDLER_ARGS);
 static int sysctl_tx_rate(SYSCTL_HANDLER_ARGS);
+#endif
 static inline void txq_start(struct ifnet *, struct sge_txq *);
 static uint32_t fconf_to_mode(uint32_t);
 static uint32_t mode_to_fconf(uint32_t);
@@ -2980,6 +2982,7 @@ t4_sysctls(struct adapter *sc)
 	    sizeof(sc->sge.counter_val), sysctl_int_array, "A",
 	    "interrupt holdoff packet counter values");
 
+#ifdef SBUF_DRAIN
 	/*
 	 * dev.t4nex.X.misc.  Marked CTLFLAG_SKIP to avoid information overload.
 	 */
@@ -3051,6 +3054,7 @@ t4_sysctls(struct adapter *sc)
 	SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "tx_rate",
 	    CTLTYPE_STRING | CTLFLAG_RD, sc, 0,
 	    sysctl_tx_rate, "A", "Tx rate");
+#endif
 
 #ifndef TCP_OFFLOAD_DISABLE
 	if (is_offload(sc)) {
@@ -3465,6 +3469,7 @@ sysctl_handle_t4_reg64(SYSCTL_HANDLER_ARGS)
 	return (sysctl_handle_64(oidp, &val, 0, req));
 }
 
+#ifdef SBUF_DRAIN
 static int
 sysctl_cctrl(SYSCTL_HANDLER_ARGS)
 {
@@ -4297,6 +4302,7 @@ sysctl_tx_rate(SYSCTL_HANDLER_ARGS)
 
 	return (rc);
 }
+#endif
 
 static inline void
 txq_start(struct ifnet *ifp, struct sge_txq *txq)