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-rw-r--r--include/net/sctp/sctp.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 6dfc5536a3e6..1f71ee5ab518 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -596,7 +596,9 @@ static inline void sctp_v4_map_v6(union sctp_addr *addr)
*/
static inline struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t)
{
- if (t->dst && !dst_check(t->dst, t->dst_cookie))
+ if (t->dst && (!dst_check(t->dst, t->dst_cookie) ||
+ t->pathmtu != max_t(size_t, SCTP_TRUNC4(dst_mtu(t->dst)),
+ SCTP_DEFAULT_MINSEGMENT)))
sctp_transport_dst_release(t);
return t->dst;