Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / net / ipv4 / xfrm4_state.c

diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c
index 223a2e8..dbabf81 100644 (file)
--- a/net/ipv4/xfrm4_state.c
+++ b/net/ipv4/xfrm4_state.c
@@ -7,12 +7,20 @@
  *
  */
 
+#include <net/ip.h>
 #include <net/xfrm.h>
 #include <linux/pfkeyv2.h>
 #include <linux/ipsec.h>
 
 static struct xfrm_state_afinfo xfrm4_state_afinfo;
 
+static int xfrm4_init_flags(struct xfrm_state *x)
+{
+       if (ipv4_config.no_pmtu_disc)
+               x->props.flags |= XFRM_STATE_NOPMTUDISC;
+       return 0;
+}
+
 static void
 __xfrm4_init_tempsel(struct xfrm_state *x, struct flowi *fl,
                     struct xfrm_tmpl *tmpl,
@@ -34,6 +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;
@@ -109,6 +132,7 @@ __xfrm4_find_acq(u8 mode, u32 reqid, u8 proto,
 static struct xfrm_state_afinfo xfrm4_state_afinfo = {
        .family                 = AF_INET,
        .lock                   = RW_LOCK_UNLOCKED,
+       .init_flags             = xfrm4_init_flags,
        .init_tempsel           = __xfrm4_init_tempsel,
        .state_lookup           = __xfrm4_state_lookup,
        .find_acq               = __xfrm4_find_acq,
@@ -119,8 +143,10 @@ void __init xfrm4_state_init(void)
        xfrm_state_register_afinfo(&xfrm4_state_afinfo);
 }
 
+#if 0
 void __exit xfrm4_state_fini(void)
 {
        xfrm_state_unregister_afinfo(&xfrm4_state_afinfo);
 }
+#endif  /*  0  */