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put ip_len in correct order for ip_output().

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This prevents a panic when ipfw generates packets on its own
(such as reject or keepalives for dynamic rules).

Reported by: Chagin Dmitry
This commit is contained in:
Luigi Rizzo 2010-01-07 09:28:17 +00:00
parent 445e33e4ac
commit eb6842e2a9
1 changed files with 2 additions and 1 deletions
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3
sys/netinet/ipfw/ip_fw_dynamic.c
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@ -1002,7 +1002,8 @@ ipfw_send_pkt(struct mbuf *replyto, struct ipfw_flow_id *id, u_int32_t seq,
h->ip_hl = sizeof(*h) >> 2;
h->ip_tos = IPTOS_LOWDELAY;
h->ip_off = 0;
h->ip_len = htons(len);
/* ip_len must be in host format for ip_output */
h->ip_len = len;
h->ip_ttl = V_ip_defttl;
h->ip_sum = 0;
break;