[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>
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)
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;
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;
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;
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) {