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authorDavid Howells <dhowells@redhat.com>2017-01-05 10:38:34 +0000
committerDavid Howells <dhowells@redhat.com>2017-01-05 11:39:12 +0000
commitb1d9f7fde0bb6c143a9a5b9246ea191e28f2c364 (patch)
treedacc3237dc81098e076b60aa6fe8ba80c22e746c /net/rxrpc
parentb54a134a7de461f804cf0e28331d0a43ee82fb13 (diff)
downloadlinux-b1d9f7fde0bb6c143a9a5b9246ea191e28f2c364.tar.bz2
rxrpc: Add some more tracing
Add the following extra tracing information: (1) Modify the rxrpc_transmit tracepoint to record the Tx window size as this is varied by the slow-start algorithm. (2) Modify the rxrpc_rx_ack tracepoint to record more information from received ACK packets. (3) Add an rxrpc_rx_data tracepoint to record the information in DATA packets. (4) Add an rxrpc_disconnect_call tracepoint to record call disconnection, including the reason the call was disconnected. (5) Add an rxrpc_improper_term tracepoint to record implicit termination of a call by a client either by starting a new call on a particular connection channel without first transmitting the final ACK for the previous call. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc')
-rw-r--r--net/rxrpc/conn_object.c1
-rw-r--r--net/rxrpc/input.c6
2 files changed, 6 insertions, 1 deletions
diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c
index e1e83af47866..b0ecb770fdce 100644
--- a/net/rxrpc/conn_object.c
+++ b/net/rxrpc/conn_object.c
@@ -173,6 +173,7 @@ void __rxrpc_disconnect_call(struct rxrpc_connection *conn,
/* Save the result of the call so that we can repeat it if necessary
* through the channel, whilst disposing of the actual call record.
*/
+ trace_rxrpc_disconnect_call(call);
chan->last_service_id = call->service_id;
if (call->abort_code) {
chan->last_abort = call->abort_code;
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index 7c2abd85def9..78ec33477adf 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -481,6 +481,7 @@ next_subpacket:
return rxrpc_proto_abort("LSA", call, seq);
}
+ trace_rxrpc_rx_data(call, seq, serial, flags, annotation);
if (before_eq(seq, hard_ack)) {
ack = RXRPC_ACK_DUPLICATE;
ack_serial = serial;
@@ -765,7 +766,9 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb,
summary.ack_reason = (buf.ack.reason < RXRPC_ACK__INVALID ?
buf.ack.reason : RXRPC_ACK__INVALID);
- trace_rxrpc_rx_ack(call, first_soft_ack, summary.ack_reason, nr_acks);
+ trace_rxrpc_rx_ack(call, sp->hdr.serial, acked_serial,
+ first_soft_ack, ntohl(buf.ack.previousPacket),
+ summary.ack_reason, nr_acks);
if (buf.ack.reason == RXRPC_ACK_PING_RESPONSE)
rxrpc_input_ping_response(call, skb->tstamp, acked_serial,
@@ -951,6 +954,7 @@ static void rxrpc_input_implicit_end_call(struct rxrpc_connection *conn,
break;
}
+ trace_rxrpc_improper_term(call);
__rxrpc_disconnect_call(conn, call);
rxrpc_notify_socket(call);
}