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| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2009-11-23 15:53:57 -0500 |
|---|---|---|
| committer | Vlad Yasevich <vladislav.yasevich@hp.com> | 2009-11-23 15:53:57 -0500 |
| commit | 90f2f5318b3a5b0898fef0fec9b91376c7de7a2c (patch) | |
| tree | 33622d2b9e2064c36c17cd108c9b3a23af1fd6a4 /net/sctp/associola.c | |
| parent | e0e9db178a5ba4dbb5f16f958f1affbdc63d2cc4 (diff) | |
| download | lwn-90f2f5318b3a5b0898fef0fec9b91376c7de7a2c.tar.gz lwn-90f2f5318b3a5b0898fef0fec9b91376c7de7a2c.zip | |
sctp: Update SWS avaoidance receiver side algorithm
We currently send window update SACKs every time we free up 1 PMTU
worth of data. That a lot more SACKs then necessary. Instead, we'll
now send back the actuall window every time we send a sack, and do
window-update SACKs when a fraction of the receive buffer has been
opened. The fraction is controlled with a sysctl.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Diffstat (limited to 'net/sctp/associola.c')
| -rw-r--r-- | net/sctp/associola.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c index 8e755ebff3b8..37e982510bea 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -1383,8 +1383,9 @@ static inline int sctp_peer_needs_update(struct sctp_association *asoc) case SCTP_STATE_SHUTDOWN_RECEIVED: case SCTP_STATE_SHUTDOWN_SENT: if ((asoc->rwnd > asoc->a_rwnd) && - ((asoc->rwnd - asoc->a_rwnd) >= - min_t(__u32, (asoc->base.sk->sk_rcvbuf >> 1), asoc->pathmtu))) + ((asoc->rwnd - asoc->a_rwnd) >= max_t(__u32, + (asoc->base.sk->sk_rcvbuf >> sctp_rwnd_upd_shift), + asoc->pathmtu))) return 1; break; default: |