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authorHideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>2005-05-26 12:58:04 -0700
committerDavid S. Miller <davem@davemloft.net>2005-05-26 12:58:04 -0700
commit92d63decc0b6a5d600f792fcf5f3ff9718c09a3d (patch)
treeeca15d3ffba7795ea4d9bef9cdc6d21c7c71fa00
parent2f872f0401d4b470990864fbf99c19130f25ad4d (diff)
downloadop-kernel-dev-92d63decc0b6a5d600f792fcf5f3ff9718c09a3d.zip
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From: Kazunori Miyazawa <kazunori@miyazawa.org>
[XFRM] Call dst_check() with appropriate cookie This fixes infinite loop issue with IPv6 tunnel mode. Signed-off-by: Kazunori Miyazawa <kazunori@miyazawa.org> Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/xfrm.h2
-rw-r--r--net/ipv6/xfrm6_policy.c4
-rw-r--r--net/xfrm/xfrm_policy.c4
3 files changed, 8 insertions, 2 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index e142a25..d675836 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -515,6 +515,8 @@ struct xfrm_dst
struct dst_entry *route;
u32 route_mtu_cached;
u32 child_mtu_cached;
+ u32 route_cookie;
+ u32 path_cookie;
};
static inline void xfrm_dst_destroy(struct xfrm_dst *xdst)
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 4429b1a..cf1d91e 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -113,6 +113,8 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int
xdst = (struct xfrm_dst *)dst1;
xdst->route = &rt->u.dst;
+ if (rt->rt6i_node)
+ xdst->route_cookie = rt->rt6i_node->fn_sernum;
dst1->next = dst_prev;
dst_prev = dst1;
@@ -137,6 +139,8 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int
dst_prev->child = &rt->u.dst;
dst->path = &rt->u.dst;
+ if (rt->rt6i_node)
+ ((struct xfrm_dst *)dst)->path_cookie = rt->rt6i_node->fn_sernum;
*dst_p = dst;
dst = dst_prev;
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 55ed979..d07f5ce 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1136,7 +1136,7 @@ int xfrm_bundle_ok(struct xfrm_dst *first, struct flowi *fl, int family)
struct xfrm_dst *last;
u32 mtu;
- if (!dst_check(dst->path, 0) ||
+ if (!dst_check(dst->path, ((struct xfrm_dst *)dst)->path_cookie) ||
(dst->dev && !netif_running(dst->dev)))
return 0;
@@ -1156,7 +1156,7 @@ int xfrm_bundle_ok(struct xfrm_dst *first, struct flowi *fl, int family)
xdst->child_mtu_cached = mtu;
}
- if (!dst_check(xdst->route, 0))
+ if (!dst_check(xdst->route, xdst->route_cookie))
return 0;
mtu = dst_mtu(xdst->route);
if (xdst->route_mtu_cached != mtu) {
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