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catch forwarded ipv6 packets with pfil_hooks for outbound things too

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This commit is contained in:
Darren Reed 2001-10-15 14:16:18 +00:00
parent 8a56180f76
commit 3a4d67f769
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=84994
1 changed files with 34 additions and 0 deletions
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34
sys/netinet6/ip6_forward.c
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@ -49,6 +49,9 @@
#include <net/if.h>
#include <net/route.h>
#ifdef PFIL_HOOKS
#include <net/pfil.h>
#endif
#include <netinet/in.h>
#include <netinet/in_var.h>
@ -75,6 +78,11 @@
#include <net/net_osdep.h>
#include <netinet6/ip6protosw.h>
extern struct ip6protosw inet6sw[];
extern u_char ip6_protox[IPPROTO_MAX];
struct route_in6 ip6_forward_rt;
/*
@ -101,6 +109,11 @@ ip6_forward(m, srcrt)
int error, type = 0, code = 0;
struct mbuf *mcopy = NULL;
struct ifnet *origifp; /* maybe unnecessary */
#ifdef PFIL_HOOKS
struct packet_filter_hook *pfh;
struct mbuf *m1;
int rv;
#endif /* PFIL_HOOKS */
#ifdef IPSEC
struct secpolicy *sp = NULL;
#endif
@ -503,6 +516,27 @@ ip6_forward(m, srcrt)
in6_clearscope(&ip6->ip6_dst);
#endif
#ifdef PFIL_HOOKS
/*
* Run through list of hooks for output packets.
*/
m1 = m;
pfh = pfil_hook_get(PFIL_OUT, &inet6sw[ip6_protox[IPPROTO_IPV6]].pr_pfh);
for (; pfh; pfh = pfh->pfil_link.tqe_next)
if (pfh->pfil_func) {
rv = pfh->pfil_func(ip6, sizeof(*ip6),
rt->rt_ifp, 1, &m1);
if (rv) {
error = EHOSTUNREACH;
goto freecopy;
}
m = m1;
if (m == NULL)
goto freecopy;
ip6 = mtod(m, struct ip6_hdr *);
}
#endif /* PFIL_HOOKS */
error = nd6_output(rt->rt_ifp, origifp, m, dst, rt);
if (error) {
in6_ifstat_inc(rt->rt_ifp, ifs6_out_discard);