On Thu, Nov 21, 2013 at 10:56:28PM +0100, Chang Xiangzhong wrote:
> Function sctp_check_transmitted(transport t, ...) would iterate all of
> transport->transmitted queue and looking for the highest __newly__ acked tsn.
> The original algorithm would depend on the order of the assoc->transport_list
> (in function sctp_outq_sack line 1215 - 1226). The result might not be the
> expected due to the order of the tranport_list.
>
> Solution: checking if the exising is smaller than the new one before assigning
>
> Signed-off-by: Chang Xiangzhong <changxiangzhong@xxxxxxxxx>
> ---
> net/sctp/outqueue.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
> index ef9e2bb..1b494fa 100644
> --- a/net/sctp/outqueue.c
> +++ b/net/sctp/outqueue.c
> @@ -1397,7 +1397,8 @@ static void sctp_check_transmitted(struct sctp_outq *q,
> */
> if (!tchunk->tsn_gap_acked) {
> tchunk->tsn_gap_acked = 1;
> - *highest_new_tsn_in_sack = tsn;
> + if (TSN_lt(*highest_new_tsn_in_sack, tsn))
> + *highest_new_tsn_in_sack = tsn;
> bytes_acked += sctp_data_size(tchunk);
> if (!tchunk->transport)
> migrate_bytes += sctp_data_size(tchunk);
> --
> 1.8.4.3
>
>
Acked-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-sctp" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
