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sctp: Bring SCTP_DELAYED_ACK socket option into API compliance

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Brings delayed_ack socket option set/get into line with the latest ietf
socket extensions API draft, while maintaining backwards compatibility.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Yongjun 2008-05-09 15:13:26 -07:00 • committed by David S. Miller
parent 5c5e12898a
commit d364d9276b
5 changed files with 187 additions and 93 deletions
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17
net/sctp/sm_sideeffect.c
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@ -190,20 +190,28 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
* unacknowledged DATA chunk. ...
*/
if (!asoc->peer.sack_needed) {
/* We will need a SACK for the next packet. */
asoc->peer.sack_needed = 1;
asoc->peer.sack_cnt++;
/* Set the SACK delay timeout based on the
* SACK delay for the last transport
* data was received from, or the default
* for the association.
*/
if (trans)
if (trans) {
/* We will need a SACK for the next packet. */
if (asoc->peer.sack_cnt >= trans->sackfreq - 1)
asoc->peer.sack_needed = 1;
asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
trans->sackdelay;
else
} else {
/* We will need a SACK for the next packet. */
if (asoc->peer.sack_cnt >= asoc->sackfreq - 1)
asoc->peer.sack_needed = 1;
asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
asoc->sackdelay;
}
/* Restart the SACK timer. */
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
@ -216,6 +224,7 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
goto nomem;
asoc->peer.sack_needed = 0;
asoc->peer.sack_cnt = 0;
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY, SCTP_CHUNK(sack));