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fix SA lookup when IPsec transport mode and tunnel mode over IPv6 is used 

at the same time.  sync with kame
(like "IP AH ESP IP", policy = "esp/tunnel/a-b/use ah/transport//use")
This commit is contained in:
itojun 2001-09-13 06:30:57 +00:00
parent 750c07de04
commit bf45c09959
1 changed files with 49 additions and 6 deletions
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51
sys/netinet6/ipsec.c
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@ -1,5 +1,5 @@
/* $NetBSD: ipsec.c,v 1.37 2001/08/06 10:25:01 itojun Exp $ */
/* $KAME: ipsec.c,v 1.124 2001/08/05 07:03:50 itojun Exp $ */
/* $NetBSD: ipsec.c,v 1.38 2001/09/13 06:30:57 itojun Exp $ */
/* $KAME: ipsec.c,v 1.125 2001/09/12 23:01:16 sakane Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -2648,6 +2648,8 @@ ipsec4_output(state, sp, flags)
/* make SA index for search proper SA */
ip = mtod(state->m, struct ip *);
bcopy(&isr->saidx, &saidx, sizeof(saidx));
saidx.mode = isr->saidx.mode;
saidx.reqid = isr->saidx.reqid;
sin = (struct sockaddr_in *)&saidx.src;
if (sin->sin_len == 0) {
sin->sin_len = sizeof(*sin);
@ -2869,6 +2871,8 @@ ipsec6_output_trans(state, nexthdrp, mprev, sp, flags, tun)
/* make SA index for search proper SA */
ip6 = mtod(state->m, struct ip6_hdr *);
bcopy(&isr->saidx, &saidx, sizeof(saidx));
saidx.mode = isr->saidx.mode;
saidx.reqid = isr->saidx.reqid;
sin6 = (struct sockaddr_in6 *)&saidx.src;
if (sin6->sin6_len == 0) {
sin6->sin6_len = sizeof(*sin6);
@ -3037,8 +3041,47 @@ ipsec6_output_tunnel(state, sp, flags)
}
for (/* already initialized */; isr; isr = isr->next) {
if (isr->saidx.mode == IPSEC_MODE_TUNNEL) {
/* When tunnel mode, SA peers must be specified. */
bcopy(&isr->saidx, &saidx, sizeof(saidx));
} else {
/* make SA index to look for a proper SA */
struct sockaddr_in6 *sin6;
bzero(&saidx, sizeof(saidx));
saidx.proto = isr->saidx.proto;
saidx.mode = isr->saidx.mode;
saidx.reqid = isr->saidx.reqid;
ip6 = mtod(state->m, struct ip6_hdr *);
sin6 = (struct sockaddr_in6 *)&saidx.src;
if (sin6->sin6_len == 0) {
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_family = AF_INET6;
sin6->sin6_port = IPSEC_PORT_ANY;
bcopy(&ip6->ip6_src, &sin6->sin6_addr,
sizeof(ip6->ip6_src));
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_src)) {
/* fix scope id for comparing SPD */
sin6->sin6_addr.s6_addr16[1] = 0;
sin6->sin6_scope_id = ntohs(ip6->ip6_src.s6_addr16[1]);
}
}
sin6 = (struct sockaddr_in6 *)&saidx.dst;
if (sin6->sin6_len == 0) {
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_family = AF_INET6;
sin6->sin6_port = IPSEC_PORT_ANY;
bcopy(&ip6->ip6_dst, &sin6->sin6_addr,
sizeof(ip6->ip6_dst));
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
/* fix scope id for comparing SPD */
sin6->sin6_addr.s6_addr16[1] = 0;
sin6->sin6_scope_id = ntohs(ip6->ip6_dst.s6_addr16[1]);
}
}
}
if (key_checkrequest(isr, &saidx) == ENOENT) {
/*
* IPsec processing is required, but no SA found.
@ -3367,8 +3410,8 @@ ipsec_copypkt(m)
for (n = m, mpp = &m; n; n = n->m_next) {
if (n->m_flags & M_EXT) {
/*
* Make a copy only if there are more than one references
* to the cluster.
* Make a copy only if there are more than one
* references to the cluster.
* XXX: is this approach effective?
*/
if (n->m_ext.ext_free || MCLISREFERENCED(n)) {