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Ip reassembly queue structure has ipq_nfrags now. Count a number of

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dropped ip fragments precisely.

Reviewed by:	silby
This commit is contained in:
Maxim Konovalov 2003-02-25 11:49:01 +00:00
parent d9b05fa0b0
commit 99e8617d24
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=111478
1 changed files with 15 additions and 7 deletions
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22
sys/netinet/ip_input.c
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@ -774,14 +774,14 @@ ip_input(struct mbuf *m)
for (i = 0; i < IPREASS_NHASH; i++) {
struct ipq *r = TAILQ_LAST(&ipq[i], ipqhead);
if (r) {
ipstat.ips_fragtimeout += r->ipq_nfrags;
ip_freef(&ipq[i], r);
ipstat.ips_fragtimeout++;
break;
}
}
} else {
ipstat.ips_fragtimeout += q->ipq_nfrags;
ip_freef(&ipq[sum], q);
ipstat.ips_fragtimeout++;
}
}
found:
@ -1079,6 +1079,7 @@ ip_reass(struct mbuf *m, struct ipqhead *head, struct ipq *fp,
}
nq = q->m_nextpkt;
m->m_nextpkt = nq;
ipstat.ips_fragdropped++;
fp->ipq_nfrags--;
m_freem(q);
}
@ -1111,16 +1112,20 @@ ip_reass(struct mbuf *m, struct ipqhead *head, struct ipq *fp,
next = 0;
for (p = NULL, q = fp->ipq_frags; q; p = q, q = q->m_nextpkt) {
if (GETIP(q)->ip_off != next) {
if (fp->ipq_nfrags > maxfragsperpacket)
if (fp->ipq_nfrags > maxfragsperpacket) {
ipstat.ips_fragdropped += fp->ipq_nfrags;
ip_freef(head, fp);
}
return (0);
}
next += GETIP(q)->ip_len;
}
/* Make sure the last packet didn't have the IP_MF flag */
if (p->m_flags & M_FRAG) {
if (fp->ipq_nfrags > maxfragsperpacket)
if (fp->ipq_nfrags > maxfragsperpacket) {
ipstat.ips_fragdropped += fp->ipq_nfrags;
ip_freef(head, fp);
}
return (0);
}
@ -1131,6 +1136,7 @@ ip_reass(struct mbuf *m, struct ipqhead *head, struct ipq *fp,
ip = GETIP(q);
if (next + (ip->ip_hl << 2) > IP_MAXPACKET) {
ipstat.ips_toolong++;
ipstat.ips_fragdropped += fp->ipq_nfrags;
ip_freef(head, fp);
return (0);
}
@ -1237,7 +1243,7 @@ ip_slowtimo()
fpp = fp;
fp = TAILQ_NEXT(fp, ipq_list);
if(--fpp->ipq_ttl == 0) {
ipstat.ips_fragtimeout++;
ipstat.ips_fragtimeout += fpp->ipq_nfrags;
ip_freef(&ipq[i], fpp);
}
}
@ -1251,7 +1257,8 @@ ip_slowtimo()
for (i = 0; i < IPREASS_NHASH; i++) {
while (nipq > maxnipq &&
!TAILQ_EMPTY(&ipq[i])) {
ipstat.ips_fragdropped++;
ipstat.ips_fragdropped +=
TAILQ_FIRST(&ipq[i])->ipq_nfrags;
ip_freef(&ipq[i], TAILQ_FIRST(&ipq[i]));
}
}
@ -1270,7 +1277,8 @@ ip_drain()
for (i = 0; i < IPREASS_NHASH; i++) {
while(!TAILQ_EMPTY(&ipq[i])) {
ipstat.ips_fragdropped++;
ipstat.ips_fragdropped +=
TAILQ_FIRST(&ipq[i])->ipq_nfrags;
ip_freef(&ipq[i], TAILQ_FIRST(&ipq[i]));
}
}