Replace all instances of the typedef mbuf_t with "struct mbuf *".

The typedef mbuf_t was used for the Mac OS/X port of the code long ago.
Since this port is no longer used and the use of mbuf_t obscures what
the code does (and is not consistent with style(9)), it is no longer needed.
This patch replaces all instances of mbuf_t with "struct mbuf *", so that
it is no longer used.

This patch should not result in any semantic change.

sys/fs/nfs/nfs.h

@@ -638,10 +638,10 @@ struct nfsgss_mechlist {
  * This structure is used by the server for describing each request.
  */
 struct nfsrv_descript {
-	mbuf_t			nd_mrep;	/* Request mbuf list */
+	struct mbuf		*nd_mrep;	/* Request mbuf list */
-	mbuf_t			nd_md;		/* Current dissect mbuf */
+	struct mbuf		*nd_md;		/* Current dissect mbuf */
-	mbuf_t			nd_mreq;	/* Reply mbuf list */
+	struct mbuf		*nd_mreq;	/* Reply mbuf list */
-	mbuf_t			nd_mb;		/* Current build mbuf */
+	struct mbuf		*nd_mb;		/* Current build mbuf */
 	NFSSOCKADDR_T		nd_nam;		/* and socket addr */
 	NFSSOCKADDR_T		nd_nam2;	/* return socket addr */
 	caddr_t			nd_dpos;	/* Current dissect pos */

sys/fs/nfs/nfs_commonsubs.c

@@ -611,7 +611,7 @@ nfsm_mbufuio(struct nfsrv_descript *nd, struct uio *uiop, int siz)
 {
 	char *mbufcp, *uiocp;
 	int xfer, left, len;
-	mbuf_t mp;
+	struct mbuf *mp;
 	long uiosiz, rem;
 	int error = 0;
 
@@ -694,7 +694,7 @@ nfsm_mbufuio(struct nfsrv_descript *nd, struct uio *uiop, int siz)
 APPLESTATIC void *
 nfsm_dissct(struct nfsrv_descript *nd, int siz, int how)
 {
-	mbuf_t mp2;
+	struct mbuf *mp2;
 	int siz2, xfer;
 	caddr_t p;
 	int left;
@@ -808,9 +808,9 @@ nfsm_advance(struct nfsrv_descript *nd, int offs, int left)
 APPLESTATIC int
 nfsm_strtom(struct nfsrv_descript *nd, const char *cp, int siz)
 {
-	mbuf_t m2;
+	struct mbuf *m2;
 	int xfer, left;
-	mbuf_t m1;
+	struct mbuf *m1;
 	int rem, bytesize;
 	u_int32_t *tl;
 	char *cp2;
@@ -1014,7 +1014,7 @@ APPLESTATIC void
 newnfs_trimleading(nd)
 	struct nfsrv_descript *nd;
 {
-	mbuf_t m, n;
+	struct mbuf *m, *n;
 	int offs;
 
 	/*
@@ -1059,7 +1059,7 @@ newnfs_trimleading(nd)
 APPLESTATIC void
 newnfs_trimtrailing(nd, mb, bpos)
 	struct nfsrv_descript *nd;
-	mbuf_t mb;
+	struct mbuf *mb;
 	caddr_t bpos;
 {
 
@@ -2423,7 +2423,7 @@ nfsrv_mtostr(struct nfsrv_descript *nd, char *str, int siz)
 {
 	char *cp;
 	int xfer, len;
-	mbuf_t mp;
+	struct mbuf *mp;
 	int rem, error = 0;
 
 	mp = nd->nd_md;
@@ -4437,7 +4437,7 @@ nfsrv_refstrbigenough(int siz, u_char **cpp, u_char **cpp2, int *slenp)
 APPLESTATIC void
 nfsrvd_rephead(struct nfsrv_descript *nd)
 {
-	mbuf_t mreq;
+	struct mbuf *mreq;
 
 	/*
 	 * If this is a big reply, use a cluster.

sys/fs/nfs/nfs_var.h

@@ -325,7 +325,7 @@ int nfsm_fhtom(struct nfsrv_descript *, u_int8_t *, int, int);
 int nfsm_advance(struct nfsrv_descript *, int, int);
 void *nfsm_dissct(struct nfsrv_descript *, int, int);
 void newnfs_trimleading(struct nfsrv_descript *);
-void newnfs_trimtrailing(struct nfsrv_descript *, mbuf_t,
+void newnfs_trimtrailing(struct nfsrv_descript *, struct mbuf *,
     caddr_t);
 void newnfs_copycred(struct nfscred *, struct ucred *);
 void newnfs_copyincred(struct ucred *, struct nfscred *);
@@ -390,7 +390,7 @@ int nfsv4_fillattr(struct nfsrv_descript *, struct mount *, vnode_t, NFSACL_T *,
     struct vattr *, fhandle_t *, int, nfsattrbit_t *,
     struct ucred *, NFSPROC_T *, int, int, int, int, uint64_t, struct statfs *);
 void nfsrv_fillattr(struct nfsrv_descript *, struct nfsvattr *);
-void nfsrv_adj(mbuf_t, int, int);
+void nfsrv_adj(struct mbuf *, int, int);
 void nfsrv_postopattr(struct nfsrv_descript *, int, struct nfsvattr *);
 int nfsd_errmap(struct nfsrv_descript *);
 void nfsv4_uidtostr(uid_t, u_char **, int *);
@@ -679,12 +679,12 @@ int nfsvno_namei(struct nfsrv_descript *, struct nameidata *,
     vnode_t, int, struct nfsexstuff *, NFSPROC_T *, vnode_t *);
 void nfsvno_setpathbuf(struct nameidata *, char **, u_long **);
 void nfsvno_relpathbuf(struct nameidata *);
-int nfsvno_readlink(vnode_t, struct ucred *, NFSPROC_T *, mbuf_t *,
+int nfsvno_readlink(vnode_t, struct ucred *, NFSPROC_T *, struct mbuf **,
-    mbuf_t *, int *);
+    struct mbuf **, int *);
 int nfsvno_read(vnode_t, off_t, int, struct ucred *, NFSPROC_T *,
-    mbuf_t *, mbuf_t *);
+    struct mbuf **, struct mbuf **);
-int nfsvno_write(vnode_t, off_t, int, int *, mbuf_t, char *, struct ucred *,
+int nfsvno_write(vnode_t, off_t, int, int *, struct mbuf *, char *,
-    NFSPROC_T *);
+    struct ucred *, NFSPROC_T *);
 int nfsvno_createsub(struct nfsrv_descript *, struct nameidata *,
     vnode_t *, struct nfsvattr *, int *, int32_t *, NFSDEV_T,
     struct nfsexstuff *);

sys/fs/nfs/nfsrvcache.h

@@ -53,7 +53,7 @@ struct nfsrvcache {
 	u_int32_t	rc_xid;			/* rpc id number */
 	time_t		rc_timestamp;		/* Time done */
 	union {
-		mbuf_t repmb;			/* Reply mbuf list OR */
+		struct mbuf *repmb;		/* Reply mbuf list OR */
 		int repstat;			/* Reply status */
 	} rc_un;
 	union {

sys/fs/nfsserver/nfs_nfsdcache.c

@@ -285,7 +285,7 @@ static void nfsrc_lock(struct nfsrvcache *rp);
 static void nfsrc_unlock(struct nfsrvcache *rp);
 static void nfsrc_wanted(struct nfsrvcache *rp);
 static void nfsrc_freecache(struct nfsrvcache *rp);
-static int nfsrc_getlenandcksum(mbuf_t m1, u_int16_t *cksum);
+static int nfsrc_getlenandcksum(struct mbuf *m1, u_int16_t *cksum);
 static void nfsrc_marksametcpconn(u_int64_t);
 
 /*
@@ -460,7 +460,7 @@ nfsrvd_updatecache(struct nfsrv_descript *nd)
 {
 	struct nfsrvcache *rp;
 	struct nfsrvcache *retrp = NULL;
-	mbuf_t m;
+	struct mbuf *m;
 	struct mtx *mutex;
 
 	rp = nd->nd_rp;
@@ -1013,10 +1013,10 @@ nfsrvd_derefcache(struct nfsrvcache *rp)
  * NFSRVCACHE_CHECKLEN bytes.
  */
 static int
-nfsrc_getlenandcksum(mbuf_t m1, u_int16_t *cksum)
+nfsrc_getlenandcksum(struct mbuf *m1, u_int16_t *cksum)
 {
 	int len = 0, cklen;
-	mbuf_t m;
+	struct mbuf *m;
 
 	m = m1;
 	while (m) {

sys/fs/nfsserver/nfs_nfsdserv.c

@@ -665,7 +665,7 @@ nfsrvd_readlink(struct nfsrv_descript *nd, __unused int isdgram,
     vnode_t vp, __unused struct nfsexstuff *exp)
 {
 	u_int32_t *tl;
-	mbuf_t mp = NULL, mpend = NULL;
+	struct mbuf *mp = NULL, *mpend = NULL;
 	int getret = 1, len;
 	struct nfsvattr nva;
 	struct thread *p = curthread;
@@ -710,7 +710,7 @@ nfsrvd_read(struct nfsrv_descript *nd, __unused int isdgram,
 {
 	u_int32_t *tl;
 	int error = 0, cnt, getret = 1, gotproxystateid, reqlen, eof = 0;
-	mbuf_t m2, m3;
+	struct mbuf *m2, *m3;
 	struct nfsvattr nva;
 	off_t off = 0x0;
 	struct nfsstate st, *stp = &st;
@@ -5532,7 +5532,7 @@ nfsrvd_getxattr(struct nfsrv_descript *nd, __unused int isdgram,
     vnode_t vp, __unused struct nfsexstuff *exp)
 {
 	uint32_t *tl;
-	mbuf_t mp = NULL, mpend = NULL;
+	struct mbuf *mp = NULL, *mpend = NULL;
 	int error, len;
 	char *name;
 	struct thread *p = curthread;

sys/fs/nfsserver/nfs_nfsdstate.c

@@ -4417,7 +4417,7 @@ nfsrv_docallback(struct nfsclient *clp, int procnum, nfsv4stateid_t *stateidp,
     int trunc, fhandle_t *fhp, struct nfsvattr *nap, nfsattrbit_t *attrbitp,
     int laytype, NFSPROC_T *p)
 {
-	mbuf_t m;
+	struct mbuf *m;
 	u_int32_t *tl;
 	struct nfsrv_descript *nd;
 	struct ucred *cred;

sys/fs/nfsserver/nfs_nfsdsubs.c

@@ -1274,9 +1274,9 @@ static short *nfsrv_v4errmap[] = {
  * boundary and only trims off the back end
  */
 APPLESTATIC void
-nfsrv_adj(mbuf_t mp, int len, int nul)
+nfsrv_adj(struct mbuf *mp, int len, int nul)
 {
-	mbuf_t m;
+	struct mbuf *m;
 	int count, i;
 	char *cp;
 
@@ -1838,7 +1838,7 @@ nfsrv_parsename(struct nfsrv_descript *nd, char *bufp, u_long *hashp,
     NFSPATHLEN_T *outlenp)
 {
 	char *fromcp, *tocp, val = '\0';
-	mbuf_t md;
+	struct mbuf *md;
 	int i;
 	int rem, len, error = 0, pubtype = 0, outlen = 0, percent = 0;
 	char digit;