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| author | Xin Long <lucien.xin@gmail.com> | 2016-10-08 06:36:05 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-10-13 16:44:13 +0300 |
| commit | cc6ac9bccf6b9814d37932e86a92f8e6a92960dc (patch) | |
| tree | ac905a2010a6d2835d5bbea5e2541c590190aaf4 /net/sctp/output.c | |
| parent | 0f505b1ae6794242240e40f7904c8b345fa38c41 (diff) | |
| download | linux-cc6ac9bccf6b9814d37932e86a92f8e6a92960dc.tar.xz | |
sctp: reuse sent_count to avoid retransmitted chunks for RTT measurements
Now sctp uses chunk->resent to record if a chunk is retransmitted, for
RTT measurements with retransmitted DATA chunks. chunk->sent_count was
introduced to record how many times one chunk has been sent for prsctp
RTX policy before. We actually can know if one chunk is retransmitted
by checking chunk->sent_count is greater than 1.
This patch is to remove resent from sctp_chunk and reuse sent_count
to avoid retransmitted chunks for RTT measurements.
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>
Diffstat (limited to 'net/sctp/output.c')
| -rw-r--r-- | net/sctp/output.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sctp/output.c b/net/sctp/output.c index 2a5c1896d18f..84f66d560b02 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -552,7 +552,8 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp) * for a given destination transport address. */ - if (!chunk->resent && !tp->rto_pending) { + if (!sctp_chunk_retransmitted(chunk) && + !tp->rto_pending) { chunk->rtt_in_progress = 1; tp->rto_pending = 1; } |