diff options
| author | Xin Long <lucien.xin@gmail.com> | 2017-11-25 21:18:34 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-25 11:05:47 +0100 |
| commit | 4f4ed764ad1834fc0d64b903cf1e43b23e3f9f21 (patch) | |
| tree | 7a7cb06d25d701e78cc216beaa19ea26ade78ae7 /net | |
| parent | 7fb8b5d4867eb99d1f936c06add86603020c97d2 (diff) | |
sctp: only update outstanding_bytes for transmitted queue when doing prsctp_prune
[ Upstream commit d30fc5126efb0c33b7adf5966d3051db2c3d7721 ]
Now outstanding_bytes is only increased when appending chunks into one
packet and sending it at 1st time, while decreased when it is about to
move into retransmit queue. It means outstanding_bytes value is already
decreased for all chunks in retransmit queue.
However sctp_prsctp_prune_sent is a common function to check the chunks
in both transmitted and retransmit queue, it decrease outstanding_bytes
when moving a chunk into abandoned queue from either of them.
It could cause outstanding_bytes underflow, as it also decreases it's
value for the chunks in retransmit queue.
This patch fixes it by only updating outstanding_bytes for transmitted
queue when pruning queues for prsctp prio policy, the same fix is also
needed in sctp_check_transmitted.
Fixes: 8dbdf1f5b09c ("sctp: implement prsctp PRIO policy")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/outqueue.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 0994ce491e7c..0188d9e8272d 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -364,7 +364,8 @@ static int sctp_prsctp_prune_sent(struct sctp_association *asoc, asoc->sent_cnt_removable--; asoc->abandoned_sent[SCTP_PR_INDEX(PRIO)]++; - if (!chk->tsn_gap_acked) { + if (queue != &asoc->outqueue.retransmit && + !chk->tsn_gap_acked) { if (chk->transport) chk->transport->flight_size -= sctp_data_size(chk); @@ -1409,7 +1410,8 @@ static void sctp_check_transmitted(struct sctp_outq *q, /* If this chunk has not been acked, stop * considering it as 'outstanding'. */ - if (!tchunk->tsn_gap_acked) { + if (transmitted_queue != &q->retransmit && + !tchunk->tsn_gap_acked) { if (tchunk->transport) tchunk->transport->flight_size -= sctp_data_size(tchunk); |