diff options
| -rw-r--r-- | net/ipv4/xfrm4_state.c | 15 | ||||
| -rw-r--r-- | net/ipv6/xfrm6_state.c | 17 |
2 files changed, 32 insertions, 0 deletions
diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c index d23e07fc81f..dbabf81a9b7 100644 --- a/net/ipv4/xfrm4_state.c +++ b/net/ipv4/xfrm4_state.c @@ -42,6 +42,21 @@ __xfrm4_init_tempsel(struct xfrm_state *x, struct flowi *fl, x->props.saddr = tmpl->saddr; if (x->props.saddr.a4 == 0) x->props.saddr.a4 = saddr->a4; + if (tmpl->mode && x->props.saddr.a4 == 0) { + struct rtable *rt; + struct flowi fl_tunnel = { + .nl_u = { + .ip4_u = { + .daddr = x->id.daddr.a4, + } + } + }; + if (!xfrm_dst_lookup((struct xfrm_dst **)&rt, + &fl_tunnel, AF_INET)) { + x->props.saddr.a4 = rt->rt_src; + dst_release(&rt->u.dst); + } + } x->props.mode = tmpl->mode; x->props.reqid = tmpl->reqid; x->props.family = AF_INET; diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c index bf0d0abc387..a5723024d3b 100644 --- a/net/ipv6/xfrm6_state.c +++ b/net/ipv6/xfrm6_state.c @@ -15,6 +15,7 @@ #include <linux/pfkeyv2.h> #include <linux/ipsec.h> #include <net/ipv6.h> +#include <net/addrconf.h> static struct xfrm_state_afinfo xfrm6_state_afinfo; @@ -41,6 +42,22 @@ __xfrm6_init_tempsel(struct xfrm_state *x, struct flowi *fl, memcpy(&x->props.saddr, &tmpl->saddr, sizeof(x->props.saddr)); if (ipv6_addr_any((struct in6_addr*)&x->props.saddr)) memcpy(&x->props.saddr, saddr, sizeof(x->props.saddr)); + if (tmpl->mode && ipv6_addr_any((struct in6_addr*)&x->props.saddr)) { + struct rt6_info *rt; + struct flowi fl_tunnel = { + .nl_u = { + .ip6_u = { + .daddr = *(struct in6_addr *)daddr, + } + } + }; + if (!xfrm_dst_lookup((struct xfrm_dst **)&rt, + &fl_tunnel, AF_INET6)) { + ipv6_get_saddr(&rt->u.dst, (struct in6_addr *)daddr, + (struct in6_addr *)&x->props.saddr); + dst_release(&rt->u.dst); + } + } x->props.mode = tmpl->mode; x->props.reqid = tmpl->reqid; x->props.family = AF_INET6; |