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sctp: check cached dst before using it

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dst_check() will take care of SA (and obsolete field), hence
IPsec rekeying scenario is taken into account.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Vlad Yaseivch <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel
2012-05-04 05:24:54 +00:00
committed by David S. Miller
parent c57b546840
commit e0268868ba
3 changed files with 14 additions and 20 deletions
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13
include/net/sctp/sctp.h
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@@ -704,4 +704,17 @@ static inline void sctp_v4_map_v6(union sctp_addr *addr)
addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff);
}
/* The cookie is always 0 since this is how it's used in the
* pmtu code.
*/
static inline struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t)
{
if (t->dst && !dst_check(t->dst, 0)) {
dst_release(t->dst);
t->dst = NULL;
}
return t->dst;
}
#endif /* __net_sctp_h__ */