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authorDavid Howells <dhowells@redhat.com>2017-04-06 10:12:00 +0100
committerDavid Howells <dhowells@redhat.com>2017-04-06 11:10:41 +0100
commit740586d290cb43d941c10274f2b65976bd94dacd (patch)
treed920549935e9840b4da7fed2cb6e0ba94d82a58d /net/rxrpc
parent005ede286f1b801be21d9667d6080bca79ef2a26 (diff)
downloadlinux-740586d290cb43d941c10274f2b65976bd94dacd.tar.bz2
rxrpc: Trace changes in a call's receive window size
Add a tracepoint (rxrpc_rx_rwind_change) to log changes in a call's receive window size as imposed by the peer through an ACK packet. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc')
-rw-r--r--net/rxrpc/input.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index 241e989597f2..45dba732a3b4 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -665,6 +665,8 @@ static void rxrpc_input_ackinfo(struct rxrpc_call *call, struct sk_buff *skb,
rwind = RXRPC_RXTX_BUFF_SIZE - 1;
if (rwind > call->tx_winsize)
wake = true;
+ trace_rxrpc_rx_rwind_change(call, sp->hdr.serial,
+ ntohl(ackinfo->rwind), wake);
call->tx_winsize = rwind;
}