svn commit: r242263 - head/sys/netinet
Rui Paulo
rpaulo at felyko.com
Sun Oct 28 21:26:51 UTC 2012
On 28 Oct 2012, at 12:20, Andre Oppermann <andre at FreeBSD.org> wrote:
> Author: andre
> Date: Sun Oct 28 19:20:23 2012
> New Revision: 242263
> URL: http://svn.freebsd.org/changeset/base/242263
>
> Log:
> Add SACK_PERMIT to the list of TCP options that are switched off after
> retransmitting a SYN three times.
>
> MFC after: 2 weeks
>
> Modified:
> head/sys/netinet/tcp_timer.c
>
> Modified: head/sys/netinet/tcp_timer.c
> ==============================================================================
> --- head/sys/netinet/tcp_timer.c Sun Oct 28 19:16:22 2012 (r242262)
> +++ head/sys/netinet/tcp_timer.c Sun Oct 28 19:20:23 2012 (r242263)
> @@ -585,7 +585,7 @@ tcp_timer_rexmt(void * xtp)
> * unknown-to-them TCP options.
> */
> if ((tp->t_state == TCPS_SYN_SENT) && (tp->t_rxtshift == 3))
> - tp->t_flags &= ~(TF_REQ_SCALE|TF_REQ_TSTMP);
> + tp->t_flags &= ~(TF_REQ_SCALE|TF_REQ_TSTMP|TF_SACK_PERMIT);
> /*
> * If we backed off this far, our srtt estimate is probably bogus.
> * Clobber it so we'll take the next rtt measurement as our srtt;
Do you have any data regarding this commit or you're just trying to make sure the SACK option follows the same behaviour of the WSCALE/TSTMP options?
Regards,
--
Rui Paulo
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