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Check that we have first fragment before pulling up TCP/UDP header.

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This commit is contained in:
Gleb Smirnoff 2005-07-17 08:09:59 +00:00
parent 85ef2343c4
commit ed2fc9673b
1 changed files with 14 additions and 12 deletions
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26
sys/netgraph/netflow/ng_netflow.c
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@ -528,19 +528,21 @@ ng_netflow_rcvdata (hook_p hook, item_p item)
break;
}
/*
* In case of IP header with options, we haven't pulled
* up enough, yet.
*/
pullup_len += (ip->ip_hl << 2) - sizeof(struct ip);
if ((ip->ip_off & htons(IP_OFFMASK)) == 0) {
/*
* In case of IP header with options, we haven't pulled
* up enough, yet.
*/
pullup_len += (ip->ip_hl << 2) - sizeof(struct ip);
switch (ip->ip_p) {
case IPPROTO_TCP:
M_CHECK(sizeof(struct tcphdr));
break;
case IPPROTO_UDP:
M_CHECK(sizeof(struct udphdr));
break;
switch (ip->ip_p) {
case IPPROTO_TCP:
M_CHECK(sizeof(struct tcphdr));
break;
case IPPROTO_UDP:
M_CHECK(sizeof(struct udphdr));
break;
}
}
switch (iface->info.ifinfo_dlt) {