rxrpc: Add a tracepoint to log injected Rx packet loss (89b475ab) · Commits · 戴 / test

include/trace/events/rxrpc.h

+21 −0

Original line number	Diff line number	Diff line
		@@ -484,6 +484,27 @@ TRACE_EVENT(rxrpc_timer,
		__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 */

+5 −6

Original line number	Diff line number	Diff line
		@@ -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",