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From: Kazunori Miyazawa <kazunori@miyazawa.org>

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[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>
This commit is contained in:
Hideaki YOSHIFUJI 2005-05-26 12:58:04 -07:00 committed by David S. Miller
parent 2f872f0401
commit 92d63decc0
3 changed files with 8 additions and 2 deletions
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2
include/net/xfrm.h
View File

@ -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)

4
net/ipv6/xfrm6_policy.c
View File

@ -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;

4
net/xfrm/xfrm_policy.c
View File

@ -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) {