rxrpc: Add a tracepoint to log injected Rx packet loss
Add a tracepoint to log received packets that get discarded due to Rx
packet loss.
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h
index 6001bf9..9413b17 100644
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -484,6 +484,27 @@
__entry->timer - __entry->now)
);
+TRACE_EVENT(rxrpc_rx_lose,
+ TP_PROTO(struct rxrpc_skb_priv *sp),
+
+ TP_ARGS(sp),
+
+ TP_STRUCT__entry(
+ __field_struct(struct rxrpc_host_header, hdr )
+ ),
+
+ TP_fast_assign(
+ memcpy(&__entry->hdr, &sp->hdr, sizeof(__entry->hdr));
+ ),
+
+ TP_printk("%08x:%08x:%08x:%04x %08x %08x %02x %02x %s *LOSE*",
+ __entry->hdr.epoch, __entry->hdr.cid,
+ __entry->hdr.callNumber, __entry->hdr.serviceId,
+ __entry->hdr.serial, __entry->hdr.seq,
+ __entry->hdr.type, __entry->hdr.flags,
+ __entry->hdr.type <= 15 ? rxrpc_pkts[__entry->hdr.type] : "?UNK")
+ );
+
#endif /* _TRACE_RXRPC_H */
/* This part must be outside protection */
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index fb3e2f6..19b1e18 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -837,20 +837,19 @@
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",