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Packets from ipfw come with IP header in host byte order. Netgraph works

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with net byte order. Change byte order to net in ng_ipfw_input(), change
byte order to host before ip_output(), do not change before ip_input().

In collaboration with:	ru
This commit is contained in:
Gleb Smirnoff 2005-02-11 20:53:41 +00:00
parent 157e401636
commit 19b5577638
1 changed files with 12 additions and 9 deletions
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21
sys/netgraph/ng_ipfw.c
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@ -228,19 +228,17 @@ ng_ipfw_rcvdata(hook_p hook, item_p item)
switch (ngit->dir) {
case NG_IPFW_OUT:
{
struct ip *ip = mtod(m, struct ip *);
ip->ip_len = ntohs(ip->ip_len);
ip->ip_off = ntohs(ip->ip_off);
return ip_output(m, NULL, NULL, ngit->flags, NULL, NULL);
}
case NG_IPFW_IN:
{
struct ip *ip;
ip = mtod(m, struct ip *);
ip->ip_len = htons(ip->ip_len);
ip->ip_off = htons(ip->ip_off);
ip_input(m);
return (0);
}
default:
panic("ng_ipfw_rcvdata: bad dir %u", ngit->dir);
}
@ -254,6 +252,7 @@ ng_ipfw_input(struct mbuf **m0, int dir, struct ip_fw_args *fwa, int tee)
{
struct mbuf *m;
struct ng_ipfw_tag *ngit;
struct ip *ip;
hook_p hook;
int error = 0;
@ -292,6 +291,10 @@ ng_ipfw_input(struct mbuf **m0, int dir, struct ip_fw_args *fwa, int tee)
if ((m = m_dup(*m0, M_DONTWAIT)) == NULL)
return (ENOMEM); /* which is ignored */
ip = mtod(m, struct ip *);
ip->ip_len = htons(ip->ip_len);
ip->ip_off = htons(ip->ip_off);
NG_SEND_DATA_ONLY(error, hook, m);
return (error);