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O_FORWARD_IP is only action which depends from the result of lookup of

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dynamic rules. We are doing forwarding in the following cases:
 o For the simple ipfw fwd rule, e.g.

	fwd 10.0.0.1 ip from any to any out xmit em0
	fwd 127.0.0.1,3128 tcp from any to any 80 in recv em1

 o For the dynamic fwd rule, e.g.

 	fwd 192.168.0.1 tcp from any to 10.0.0.3 3333 setup keep-state

        When this rule triggers it creates a dynamic rule, but this
	dynamic rule should forward packets only in forward direction.

 o And the last case that does not work before - simple fwd rule which
 triggers when some dynamic rule is already executed.

PR:		kern/147720, kern/150798
MFC after:	1 month
This commit is contained in:
Andrey V. Elsukov 2011-06-01 19:44:52 +00:00
parent 082b754397
commit 281d42c371
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=222582
1 changed files with 2 additions and 1 deletions
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3
sys/netinet/ipfw/ip_fw2.c
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@ -2118,7 +2118,8 @@ do { \
case O_FORWARD_IP:
if (args->eh) /* not valid on layer2 pkts */
break;
if (!q || dyn_dir == MATCH_FORWARD) {
if (q == NULL || q->rule != f ||
dyn_dir == MATCH_FORWARD) {
struct sockaddr_in *sa;
sa = &(((ipfw_insn_sa *)cmd)->sa);
if (sa->sin_addr.s_addr == INADDR_ANY) {