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| author | Jere Leppänen <jere.leppanen@nokia.com> | 2020-04-21 22:03:41 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-04-22 19:27:40 -0700 |
| commit | 145cb2f7177d94bc54563ed26027e952ee0ae03c (patch) | |
| tree | d0c369e6627892b36049b481a181b142a1c53e13 /net | |
| parent | 72579e14a1d3d3d561039dfe7e5f47aaf22e3fd3 (diff) | |
| download | linux-145cb2f7177d94bc54563ed26027e952ee0ae03c.tar.bz2 | |
sctp: Fix bundling of SHUTDOWN with COOKIE-ACK
When we start shutdown in sctp_sf_do_dupcook_a(), we want to bundle
the SHUTDOWN with the COOKIE-ACK to ensure that the peer receives them
at the same time and in the correct order. This bundling was broken by
commit 4ff40b86262b ("sctp: set chunk transport correctly when it's a
new asoc"), which assigns a transport for the COOKIE-ACK, but not for
the SHUTDOWN.
Fix this by passing a reference to the COOKIE-ACK chunk as an argument
to sctp_sf_do_9_2_start_shutdown() and onward to
sctp_make_shutdown(). This way the SHUTDOWN chunk is assigned the same
transport as the COOKIE-ACK chunk, which allows them to be bundled.
In sctp_sf_do_9_2_start_shutdown(), the void *arg parameter was
previously unused. Now that we're taking it into use, it must be a
valid pointer to a chunk, or NULL. There is only one call site where
it's not, in sctp_sf_autoclose_timer_expire(). Fix that too.
Fixes: 4ff40b86262b ("sctp: set chunk transport correctly when it's a new asoc")
Signed-off-by: Jere Leppänen <jere.leppanen@nokia.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 6a16af4b1ef6..26788f4a3b9e 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -1865,7 +1865,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_a( */ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl)); return sctp_sf_do_9_2_start_shutdown(net, ep, asoc, - SCTP_ST_CHUNK(0), NULL, + SCTP_ST_CHUNK(0), repl, commands); } else { sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE, @@ -5470,7 +5470,7 @@ enum sctp_disposition sctp_sf_do_9_2_start_shutdown( * in the Cumulative TSN Ack field the last sequential TSN it * has received from the peer. */ - reply = sctp_make_shutdown(asoc, NULL); + reply = sctp_make_shutdown(asoc, arg); if (!reply) goto nomem; @@ -6068,7 +6068,7 @@ enum sctp_disposition sctp_sf_autoclose_timer_expire( disposition = SCTP_DISPOSITION_CONSUME; if (sctp_outq_is_empty(&asoc->outqueue)) { disposition = sctp_sf_do_9_2_start_shutdown(net, ep, asoc, type, - arg, commands); + NULL, commands); } return disposition; |