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| author | David Howells | 2017-06-14 18:56:50 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-06-14 21:42:45 +0200 |
| commit | f7aec129a356ad049edddcb7e77b04a474fcf41f (patch) | |
| tree | 103d3fb8a7c99b6c9ebaeaf20d2c891174d72f48 /net/rxrpc/conn_object.c | |
| parent | liquidio: fix VF driver off-by-one bug when setting ethtool -C ethX rx-frames (diff) | |
| download | kernel-qcow2-linux-f7aec129a356ad049edddcb7e77b04a474fcf41f.tar.gz kernel-qcow2-linux-f7aec129a356ad049edddcb7e77b04a474fcf41f.tar.xz kernel-qcow2-linux-f7aec129a356ad049edddcb7e77b04a474fcf41f.zip | |
rxrpc: Cache the congestion window setting
Cache the congestion window setting that was determined during a call's
transmission phase when it finishes so that it can be used by the next call
to the same peer, thereby shortcutting the slow-start algorithm.
The value is stored in the rxrpc_peer struct and is accessed without
locking. Each call takes the value that happens to be there when it starts
and just overwrites the value when it finishes.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc/conn_object.c')
| -rw-r--r-- | net/rxrpc/conn_object.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c index 5bb255107427..929b50d5afe8 100644 --- a/net/rxrpc/conn_object.c +++ b/net/rxrpc/conn_object.c @@ -193,6 +193,8 @@ void rxrpc_disconnect_call(struct rxrpc_call *call) { struct rxrpc_connection *conn = call->conn; + call->peer->cong_cwnd = call->cong_cwnd; + spin_lock_bh(&conn->params.peer->lock); hlist_del_init(&call->error_link); spin_unlock_bh(&conn->params.peer->lock); |