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rxrpc: Add a tracepoint to log injected Rx packet loss

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Add a tracepoint to log received packets that get discarded due to Rx
packet loss.

Signed-off-by: David Howells <[email protected]>
This commit is contained in:
David Howells 2016-09-23 12:39:22 +01:00
commit 89b475abdb
2 changed files with 26 additions and 6 deletions
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11
net/rxrpc/input.c
View file

@ -837,20 +837,19 @@ void rxrpc_data_ready(struct sock *udp_sk)
skb_orphan(skb);
sp = rxrpc_skb(skb);
/* dig out the RxRPC connection details */
if (rxrpc_extract_header(sp, skb) < 0)
goto bad_message;
if (IS_ENABLED(CONFIG_AF_RXRPC_INJECT_LOSS)) {
static int lose;
if ((lose++ & 7) == 7) {
trace_rxrpc_rx_lose(sp);
rxrpc_lose_skb(skb, rxrpc_skb_rx_lost);
return;
}
}
_net("Rx UDP packet from %08x:%04hu",
ntohl(ip_hdr(skb)->saddr), ntohs(udp_hdr(skb)->source));
/* dig out the RxRPC connection details */
if (rxrpc_extract_header(sp, skb) < 0)
goto bad_message;
trace_rxrpc_rx_packet(sp);
_net("Rx RxRPC %s ep=%x call=%x:%x",