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authorDavid Howells <dhowells@redhat.com>2017-04-06 10:12:00 +0100
committerDavid Howells <dhowells@redhat.com>2017-04-06 11:09:39 +0100
commitfb46f6ee10e78799ea38cf97e4bf52cb70f1228a (patch)
tree070c369bd2417cc34c6e61b93e8567450406a55c /include
parentef68622da9cc0c4e5202f90093a3a5314e41e9e9 (diff)
downloadlinux-fb46f6ee10e78799ea38cf97e4bf52cb70f1228a.tar.bz2
rxrpc: Trace protocol errors in received packets
Add a tracepoint (rxrpc_rx_proto) to record protocol errors in received packets. The following changes are made: (1) Add a function, __rxrpc_abort_eproto(), to note a protocol error on a call and mark the call aborted. This is wrapped by rxrpc_abort_eproto() that makes the why string usable in trace. (2) Add trace_rxrpc_rx_proto() or rxrpc_abort_eproto() to protocol error generation points, replacing rxrpc_abort_call() with the latter. (3) Only send an abort packet in rxkad_verify_packet*() if we actually managed to abort the call. Note that a trace event is also emitted if a kernel user (e.g. afs) tries to send data through a call when it's not in the transmission phase, though it's not technically a receive event. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/trace/events/rxrpc.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h
index 39123c06a566..626af97863e8 100644
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -1087,6 +1087,30 @@ TRACE_EVENT(rxrpc_improper_term,
__entry->abort_code)
);
+TRACE_EVENT(rxrpc_rx_eproto,
+ TP_PROTO(struct rxrpc_call *call, rxrpc_serial_t serial,
+ const char *why),
+
+ TP_ARGS(call, serial, why),
+
+ TP_STRUCT__entry(
+ __field(struct rxrpc_call *, call )
+ __field(rxrpc_serial_t, serial )
+ __field(const char *, why )
+ ),
+
+ TP_fast_assign(
+ __entry->call = call;
+ __entry->serial = serial;
+ __entry->why = why;
+ ),
+
+ TP_printk("c=%p EPROTO %08x %s",
+ __entry->call,
+ __entry->serial,
+ __entry->why)
+ );
+
#endif /* _TRACE_RXRPC_H */
/* This part must be outside protection */