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- Use m_getcl() instead of hand allocating.

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- Convert panic() to KASSERT.
- Remove superfluous cleaning of mbuf fields after allocation.
- Add comment on possible use of m_get2() here.

Sponsored by:	Nginx, Inc.
This commit is contained in:
Gleb Smirnoff 2013-03-15 12:52:59 +00:00
parent 7b07d1bed0
commit c69f77c339
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=248322
1 changed files with 8 additions and 11 deletions
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19
sys/net/rtsock.c
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@ -1118,20 +1118,17 @@ rt_msg1(int type, struct rt_addrinfo *rtinfo)
default:
len = sizeof(struct rt_msghdr);
}
if (len > MCLBYTES)
panic("rt_msg1");
m = m_gethdr(M_NOWAIT, MT_DATA);
if (m && len > MHLEN) {
MCLGET(m, M_NOWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_free(m);
m = NULL;
}
}
/* XXXGL: can we use MJUMPAGESIZE cluster here? */
KASSERT(len <= MCLBYTES, ("%s: message too big", __func__));
if (len > MHLEN)
m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
else
m = m_gethdr(M_NOWAIT, MT_DATA);
if (m == NULL)
return (m);
m->m_pkthdr.len = m->m_len = len;
m->m_pkthdr.rcvif = NULL;
rtm = mtod(m, struct rt_msghdr *);
bzero((caddr_t)rtm, len);
for (i = 0; i < RTAX_MAX; i++) {