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| author | David Howells <dhowells@redhat.com> | 2016-09-23 13:58:55 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2016-09-23 15:49:19 +0100 |
| commit | c6672e3fe4a641bf302d6309ab4d5ee55648e758 (patch) | |
| tree | f82db3e6572fae4c20d0e83edd5e119928e75243 /net/rxrpc | |
| parent | 9c7ad434441da6b5d4ac878cac368fbdaec99b56 (diff) | |
| download | linux-c6672e3fe4a641bf302d6309ab4d5ee55648e758.tar.gz linux-c6672e3fe4a641bf302d6309ab4d5ee55648e758.tar.bz2 linux-c6672e3fe4a641bf302d6309ab4d5ee55648e758.zip | |
rxrpc: Add a tracepoint to log which packets will be retransmitted
Add a tracepoint to log in rxrpc_resend() which packets will be
retransmitted. Note that if a positive ACK comes in whilst we have dropped
the lock to retransmit another packet, the actual retransmission may not
happen, though some of the effects will (such as altering the congestion
management).
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc')
| -rw-r--r-- | net/rxrpc/call_event.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c index fd5b11339ffb..a78a92fe5d77 100644 --- a/net/rxrpc/call_event.c +++ b/net/rxrpc/call_event.c @@ -196,6 +196,8 @@ static void rxrpc_resend(struct rxrpc_call *call) /* Okay, we need to retransmit a packet. */ call->rxtx_annotations[ix] = RXRPC_TX_ANNO_RETRANS | annotation; + trace_rxrpc_retransmit(call, seq, annotation | anno_type, + ktime_to_ns(ktime_sub(skb->tstamp, max_age))); } resend_at = ktime_sub(ktime_add_ms(oldest, rxrpc_resend_timeout), now); |