rxrpc: Improve skb tracing
Improve sk_buff tracing within AF_RXRPC by the following means:
(1) Use an enum to note the event type rather than plain integers and use
an array of event names rather than a big multi ?: list.
(2) Distinguish Rx from Tx packets and account them separately. This
requires the call phase to be tracked so that we know what we might
find in rxtx_buffer[].
(3) Add a parameter to rxrpc_{new,see,get,free}_skb() to indicate the
event type.
(4) A pair of 'rotate' events are added to indicate packets that are about
to be rotated out of the Rx and Tx windows.
(5) A pair of 'lost' events are added, along with rxrpc_lose_skb() for
packet loss injection recording.
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index 2c9daea..a2cad5c 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -324,7 +324,7 @@
whdr.type = RXRPC_PACKET_TYPE_ABORT;
while ((skb = skb_dequeue(&local->reject_queue))) {
- rxrpc_see_skb(skb);
+ rxrpc_see_skb(skb, rxrpc_skb_rx_seen);
sp = rxrpc_skb(skb);
if (rxrpc_extract_addr_from_skb(&srx, skb) == 0) {
@@ -343,7 +343,7 @@
kernel_sendmsg(local->socket, &msg, iov, 2, size);
}
- rxrpc_free_skb(skb);
+ rxrpc_free_skb(skb, rxrpc_skb_rx_freed);
}
_leave("");