Commit 145cb2f7 authored by Jere Leppänen's avatar Jere Leppänen Committed by David S. Miller

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 4ff40b86 ("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: 4ff40b86 ("sctp: set chunk transport correctly when it's a new asoc")
Signed-off-by: default avatarJere Leppänen <jere.leppanen@nokia.com>
Acked-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 72579e14
...@@ -1865,7 +1865,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_a( ...@@ -1865,7 +1865,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_a(
*/ */
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl)); sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(repl));
return sctp_sf_do_9_2_start_shutdown(net, ep, asoc, return sctp_sf_do_9_2_start_shutdown(net, ep, asoc,
SCTP_ST_CHUNK(0), NULL, SCTP_ST_CHUNK(0), repl,
commands); commands);
} else { } else {
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE, sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
...@@ -5470,7 +5470,7 @@ enum sctp_disposition sctp_sf_do_9_2_start_shutdown( ...@@ -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 * in the Cumulative TSN Ack field the last sequential TSN it
* has received from the peer. * has received from the peer.
*/ */
reply = sctp_make_shutdown(asoc, NULL); reply = sctp_make_shutdown(asoc, arg);
if (!reply) if (!reply)
goto nomem; goto nomem;
...@@ -6068,7 +6068,7 @@ enum sctp_disposition sctp_sf_autoclose_timer_expire( ...@@ -6068,7 +6068,7 @@ enum sctp_disposition sctp_sf_autoclose_timer_expire(
disposition = SCTP_DISPOSITION_CONSUME; disposition = SCTP_DISPOSITION_CONSUME;
if (sctp_outq_is_empty(&asoc->outqueue)) { if (sctp_outq_is_empty(&asoc->outqueue)) {
disposition = sctp_sf_do_9_2_start_shutdown(net, ep, asoc, type, disposition = sctp_sf_do_9_2_start_shutdown(net, ep, asoc, type,
arg, commands); NULL, commands);
} }
return disposition; return disposition;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment