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authorXin Long <lucien.xin@gmail.com>2018-05-02 08:39:46 +0300
committerDavid S. Miller <davem@davemloft.net>2018-05-02 18:15:33 +0300
commit46e16d4b956867013e0bbd7f2bad206f4aa55752 (patch)
tree8e48a858378c7ac595d5a75664369b616aa34d0d /net/sctp
parent4842a08fb80bc09b7b089af42c58353dfaa8f88f (diff)
downloadlinux-46e16d4b956867013e0bbd7f2bad206f4aa55752.tar.xz
sctp: use the old asoc when making the cookie-ack chunk in dupcook_d
When processing a duplicate cookie-echo chunk, for case 'D', sctp will not process the param from this chunk. It means old asoc has nothing to be updated, and the new temp asoc doesn't have the complete info. So there's no reason to use the new asoc when creating the cookie-ack chunk. Otherwise, like when auth is enabled for cookie-ack, the chunk can not be set with auth, and it will definitely be dropped by peer. This issue is there since very beginning, and we fix it by using the old asoc instead. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/sm_statefuns.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 98acfed45e3b..28c070e187c2 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -2056,7 +2056,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_d(
}
}
- repl = sctp_make_cookie_ack(new_asoc, chunk);
+ repl = sctp_make_cookie_ack(asoc, chunk);
if (!repl)
goto nomem;