rxrpc: Trace resend

Add a tracepoint to trace packet resend events and to dump the Tx
annotation buffer for added illumination.

Signed-off-by: David Howells <dhowells@rdhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index ad2ab1103189..6a62e42e1d8d 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -195,6 +195,7 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
          * the packets in the Tx buffer we're going to resend and what the new
          * resend timeout will be.
          */
+        trace_rxrpc_resend(call, (cursor + 1) & RXRPC_RXTX_BUFF_MASK);
         oldest = now;
         for (seq = cursor + 1; before_eq(seq, top); seq++) {
                 ix = seq & RXRPC_RXTX_BUFF_MASK;