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Move ip_reassemble()'s use of the global M_FRAG mbuf flag to a protocol layer

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specific flag instead.  The flag is only relevant while the packet stays in
the IP reassembly queue.

Discussed with:	trociny, glebius
This commit is contained in:
Andre Oppermann 2013-08-19 10:34:10 +00:00
parent fb86dfcd2f
commit b09dc7e328
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=254518
2 changed files with 4 additions and 3 deletions
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6
sys/netinet/ip_input.c
View File

@ -911,9 +911,9 @@ ip_reass(struct mbuf *m)
IPSTAT_INC(ips_toosmall); /* XXX */
goto dropfrag;
}
m->m_flags |= M_FRAG;
m->m_flags |= M_IP_FRAG;
} else
m->m_flags &= ~M_FRAG;
m->m_flags &= ~M_IP_FRAG;
ip->ip_off = htons(ntohs(ip->ip_off) << 3);
/*
@ -1060,7 +1060,7 @@ ip_reass(struct mbuf *m)
next += ntohs(GETIP(q)->ip_len);
}
/* Make sure the last packet didn't have the IP_MF flag */
if (p->m_flags & M_FRAG) {
if (p->m_flags & M_IP_FRAG) {
if (fp->ipq_nfrags > V_maxfragsperpacket) {
IPSTAT_ADD(ips_fragdropped, fp->ipq_nfrags);
ip_freef(head, fp);

1
sys/netinet/ip_var.h
View File

@ -167,6 +167,7 @@ void kmod_ipstat_dec(int statnum);
*/
#define M_FASTFWD_OURS M_PROTO1 /* changed dst to local */
#define M_IP_NEXTHOP M_PROTO2 /* explicit ip nexthop */
#define M_IP_FRAG M_PROTO4 /* fragment reassembly */
#ifdef __NO_STRICT_ALIGNMENT
#define IP_HDR_ALIGNED_P(ip) 1