d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Replace mbuf macros with the code they would generate in the NFS code.

Browse Source 
When the code was ported to Mac OS/X, mbuf handling functions were
converted to using the Mac OS/X accessor functions. For FreeBSD, they
are a simple set of macros in sys/fs/nfs/nfskpiport.h.
Since porting to Mac OS/X is no longer a consideration, replacement of
these macros with the code generated by them makes the code more
readable.
When support for external page mbufs is added as needed by the KERN_TLS,
the patch becomes simpler if done without the macros.

This patch should not result in any semantic change.
This conversion will be committed one file at a time.
This commit is contained in:
Rick Macklem 2020-04-09 23:11:19 +00:00
parent b24db8a432
commit c948a17a52
1 changed files with 57 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
sys/fs/nfs/nfs_commonsubs.c
View File

@ -360,9 +360,9 @@ nfscl_reqstart(struct nfsrv_descript *nd, int procnum, struct nfsmount *nmp,
NFSMCLGET(mb, M_WAITOK);
else
NFSMGET(mb);
mbuf_setlen(mb, 0);
mb->m_len = 0;
nd->nd_mreq = nd->nd_mb = mb;
nd->nd_bpos = NFSMTOD(mb, caddr_t);
nd->nd_bpos = mtod(mb, caddr_t);
/*
* And fill the first file handle into the request.
@ -617,7 +617,7 @@ nfsm_mbufuio(struct nfsrv_descript *nd, struct uio *uiop, int siz)
mp = nd->nd_md;
mbufcp = nd->nd_dpos;
len = NFSMTOD(mp, caddr_t) + mbuf_len(mp) - mbufcp;
len = mtod(mp, caddr_t) + mp->m_len - mbufcp;
rem = NFSM_RNDUP(siz) - siz;
while (siz > 0) {
if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) {
@ -631,13 +631,13 @@ nfsm_mbufuio(struct nfsrv_descript *nd, struct uio *uiop, int siz)
uiosiz = left;
while (left > 0) {
while (len == 0) {
mp = mbuf_next(mp);
mp = mp->m_next;
if (mp == NULL) {
error = EBADRPC;
goto out;
}
mbufcp = NFSMTOD(mp, caddr_t);
len = mbuf_len(mp);
mbufcp = mtod(mp, caddr_t);
len = mp->m_len;
KASSERT(len >= 0,
("len %d, corrupted mbuf?", len));
}
@ -701,18 +701,18 @@ nfsm_dissct(struct nfsrv_descript *nd, int siz, int how)
caddr_t retp;
retp = NULL;
left = NFSMTOD(nd->nd_md, caddr_t) + mbuf_len(nd->nd_md) - nd->nd_dpos;
left = mtod(nd->nd_md, caddr_t) + nd->nd_md->m_len - nd->nd_dpos;
while (left == 0) {
nd->nd_md = mbuf_next(nd->nd_md);
nd->nd_md = nd->nd_md->m_next;
if (nd->nd_md == NULL)
return (retp);
left = mbuf_len(nd->nd_md);
nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t);
left = nd->nd_md->m_len;
nd->nd_dpos = mtod(nd->nd_md, caddr_t);
}
if (left >= siz) {
retp = nd->nd_dpos;
nd->nd_dpos += siz;
} else if (mbuf_next(nd->nd_md) == NULL) {
} else if (nd->nd_md->m_next == NULL) {
return (retp);
} else if (siz > ncl_mbuf_mhlen) {
panic("nfs S too big");
@ -720,33 +720,33 @@ nfsm_dissct(struct nfsrv_descript *nd, int siz, int how)
MGET(mp2, MT_DATA, how);
if (mp2 == NULL)
return (NULL);
mbuf_setnext(mp2, mbuf_next(nd->nd_md));
mbuf_setnext(nd->nd_md, mp2);
mbuf_setlen(nd->nd_md, mbuf_len(nd->nd_md) - left);
mp2->m_next = nd->nd_md->m_next;
nd->nd_md->m_next = mp2;
nd->nd_md->m_len -= left;
nd->nd_md = mp2;
retp = p = NFSMTOD(mp2, caddr_t);
retp = p = mtod(mp2, caddr_t);
NFSBCOPY(nd->nd_dpos, p, left); /* Copy what was left */
siz2 = siz - left;
p += left;
mp2 = mbuf_next(mp2);
mp2 = mp2->m_next;
/* Loop around copying up the siz2 bytes */
while (siz2 > 0) {
if (mp2 == NULL)
return (NULL);
xfer = (siz2 > mbuf_len(mp2)) ? mbuf_len(mp2) : siz2;
xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2;
if (xfer > 0) {
NFSBCOPY(NFSMTOD(mp2, caddr_t), p, xfer);
NFSM_DATAP(mp2, xfer);
mbuf_setlen(mp2, mbuf_len(mp2) - xfer);
NFSBCOPY(mtod(mp2, caddr_t), p, xfer);
mp2->m_data += xfer;
mp2->m_len -= xfer;
p += xfer;
siz2 -= xfer;
}
if (siz2 > 0)
mp2 = mbuf_next(mp2);
mp2 = mp2->m_next;
}
mbuf_setlen(nd->nd_md, siz);
nd->nd_md->m_len = siz;
nd->nd_md = mp2;
nd->nd_dpos = NFSMTOD(mp2, caddr_t);
nd->nd_dpos = mtod(mp2, caddr_t);
}
return (retp);
}
@ -778,7 +778,7 @@ nfsm_advance(struct nfsrv_descript *nd, int offs, int left)
* If left == -1, calculate it here.
*/
if (left == -1)
left = NFSMTOD(nd->nd_md, caddr_t) + mbuf_len(nd->nd_md) -
left = mtod(nd->nd_md, caddr_t) + nd->nd_md->m_len -
nd->nd_dpos;
/*
@ -786,13 +786,13 @@ nfsm_advance(struct nfsrv_descript *nd, int offs, int left)
*/
while (offs > left) {
offs -= left;
nd->nd_md = mbuf_next(nd->nd_md);
nd->nd_md = nd->nd_md->m_next;
if (nd->nd_md == NULL) {
error = EBADRPC;
goto out;
}
left = mbuf_len(nd->nd_md);
nd->nd_dpos = NFSMTOD(nd->nd_md, caddr_t);
left = nd->nd_md->m_len;
nd->nd_dpos = mtod(nd->nd_md, caddr_t);
}
nd->nd_dpos += offs;
@ -832,10 +832,10 @@ nfsm_strtom(struct nfsrv_descript *nd, const char *cp, int siz)
NFSMCLGET(m1, M_WAITOK);
else
NFSMGET(m1);
mbuf_setlen(m1, 0);
mbuf_setnext(m2, m1);
m1->m_len = 0;
m2->m_next = m1;
m2 = m1;
cp2 = NFSMTOD(m2, caddr_t);
cp2 = mtod(m2, caddr_t);
left = M_TRAILINGSPACE(m2);
}
if (left >= siz)
@ -844,18 +844,18 @@ nfsm_strtom(struct nfsrv_descript *nd, const char *cp, int siz)
xfer = left;
NFSBCOPY(cp, cp2, xfer);
cp += xfer;
mbuf_setlen(m2, mbuf_len(m2) + xfer);
m2->m_len += xfer;
siz -= xfer;
left -= xfer;
if (siz == 0 && rem) {
if (left < rem)
panic("nfsm_strtom");
NFSBZERO(cp2 + xfer, rem);
mbuf_setlen(m2, mbuf_len(m2) + rem);
m2->m_len += rem;
}
}
nd->nd_mb = m2;
nd->nd_bpos = NFSMTOD(m2, caddr_t) + mbuf_len(m2);
nd->nd_bpos = mtod(m2, caddr_t) + m2->m_len;
return (bytesize);
}
@ -1022,35 +1022,35 @@ newnfs_trimleading(nd)
*/
if (nd->nd_mrep != nd->nd_md) {
m = nd->nd_mrep;
while (mbuf_next(m) != nd->nd_md) {
if (mbuf_next(m) == NULL)
while (m->m_next != nd->nd_md) {
if (m->m_next == NULL)
panic("nfsm trim leading");
m = mbuf_next(m);
m = m->m_next;
}
mbuf_setnext(m, NULL);
mbuf_freem(nd->nd_mrep);
m->m_next = NULL;
m_freem(nd->nd_mrep);
}
m = nd->nd_md;
/*
* Now, adjust this mbuf, based on nd_dpos.
*/
offs = nd->nd_dpos - NFSMTOD(m, caddr_t);
if (offs == mbuf_len(m)) {
offs = nd->nd_dpos - mtod(m, caddr_t);
if (offs == m->m_len) {
n = m;
m = mbuf_next(m);
m = m->m_next;
if (m == NULL)
panic("nfsm trim leading2");
mbuf_setnext(n, NULL);
mbuf_freem(n);
n->m_next = NULL;
m_freem(n);
} else if (offs > 0) {
mbuf_setlen(m, mbuf_len(m) - offs);
NFSM_DATAP(m, offs);
m->m_len -= offs;
m->m_data += offs;
} else if (offs < 0)
panic("nfsm trimleading offs");
nd->nd_mrep = m;
nd->nd_md = m;
nd->nd_dpos = NFSMTOD(m, caddr_t);
nd->nd_dpos = mtod(m, caddr_t);
}
/*
@ -1063,11 +1063,11 @@ newnfs_trimtrailing(nd, mb, bpos)
caddr_t bpos;
{
if (mbuf_next(mb)) {
mbuf_freem(mbuf_next(mb));
mbuf_setnext(mb, NULL);
if (mb->m_next) {
m_freem(mb->m_next);
mb->m_next = NULL;
}
mbuf_setlen(mb, bpos - NFSMTOD(mb, caddr_t));
mb->m_len = bpos - mtod(mb, caddr_t);
nd->nd_mb = mb;
nd->nd_bpos = bpos;
}
@ -2428,7 +2428,7 @@ nfsrv_mtostr(struct nfsrv_descript *nd, char *str, int siz)
mp = nd->nd_md;
cp = nd->nd_dpos;
len = NFSMTOD(mp, caddr_t) + mbuf_len(mp) - cp;
len = mtod(mp, caddr_t) + mp->m_len - cp;
rem = NFSM_RNDUP(siz) - siz;
while (siz > 0) {
if (len > siz)
@ -2439,13 +2439,13 @@ nfsrv_mtostr(struct nfsrv_descript *nd, char *str, int siz)
str += xfer;
siz -= xfer;
if (siz > 0) {
mp = mbuf_next(mp);
mp = mp->m_next;
if (mp == NULL) {
error = EBADRPC;
goto out;
}
cp = NFSMTOD(mp, caddr_t);
len = mbuf_len(mp);
cp = mtod(mp, caddr_t);
len = mp->m_len;
} else {
cp += xfer;
len -= xfer;
@ -3728,7 +3728,7 @@ nfsrv_getuser(int procnum, uid_t uid, gid_t gid, char *name)
NFSUNLOCKNAMEID();
NFSFREECRED(cred);
if (!error) {
mbuf_freem(nd->nd_mrep);
m_freem(nd->nd_mrep);
error = nd->nd_repstat;
}
out:
@ -4452,8 +4452,8 @@ nfsrvd_rephead(struct nfsrv_descript *nd)
nd->nd_mreq = mreq;
nd->nd_mb = mreq;
}
nd->nd_bpos = NFSMTOD(mreq, caddr_t);
mbuf_setlen(mreq, 0);
nd->nd_bpos = mtod(mreq, caddr_t);
mreq->m_len = 0;
if ((nd->nd_flag & ND_GSSINITREPLY) == 0)
NFSM_BUILD(nd->nd_errp, int *, NFSX_UNSIGNED);