Commit 0918e34b authored by Geliang Tang's avatar Geliang Tang Committed by David S. Miller
Browse files

mptcp: add tracepoint in get_mapping_status 



This patch added a tracepoint in the mapping status function
get_mapping_status() to dump every mpext field.

Suggested-by: default avatarPaolo Abeni <pabeni@redhat.com>
Acked-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarGeliang Tang <geliangtang@gmail.com>
Signed-off-by: default avatarMat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e10a9892

include/trace/events/mptcp.h

+52 −0
Original line number Diff line number Diff line
@@ -54,6 +54,58 @@ TRACE_EVENT(mptcp_subflow_get_send, 
		  __entry->backup, __entry->ratio)

);



DECLARE_EVENT_CLASS(mptcp_dump_mpext,



	TP_PROTO(struct mptcp_ext *mpext),



	TP_ARGS(mpext),



	TP_STRUCT__entry(

		__field(u64, data_ack)

		__field(u64, data_seq)

		__field(u32, subflow_seq)

		__field(u16, data_len)

		__field(u8, use_map)

		__field(u8, dsn64)

		__field(u8, data_fin)

		__field(u8, use_ack)

		__field(u8, ack64)

		__field(u8, mpc_map)

		__field(u8, frozen)

		__field(u8, reset_transient)

		__field(u8, reset_reason)

	),



	TP_fast_assign(

		__entry->data_ack = mpext->ack64 ? mpext->data_ack : mpext->data_ack32;

		__entry->data_seq = mpext->data_seq;

		__entry->subflow_seq = mpext->subflow_seq;

		__entry->data_len = mpext->data_len;

		__entry->use_map = mpext->use_map;

		__entry->dsn64 = mpext->dsn64;

		__entry->data_fin = mpext->data_fin;

		__entry->use_ack = mpext->use_ack;

		__entry->ack64 = mpext->ack64;

		__entry->mpc_map = mpext->mpc_map;

		__entry->frozen = mpext->frozen;

		__entry->reset_transient = mpext->reset_transient;

		__entry->reset_reason = mpext->reset_reason;

	),



	TP_printk("data_ack=%llu data_seq=%llu subflow_seq=%u data_len=%u use_map=%u dsn64=%u data_fin=%u use_ack=%u ack64=%u mpc_map=%u frozen=%u reset_transient=%u reset_reason=%u",

		  __entry->data_ack, __entry->data_seq,

		  __entry->subflow_seq, __entry->data_len,

		  __entry->use_map, __entry->dsn64,

		  __entry->data_fin, __entry->use_ack,

		  __entry->ack64, __entry->mpc_map,

		  __entry->frozen, __entry->reset_transient,

		  __entry->reset_reason)

);



DEFINE_EVENT(mptcp_dump_mpext, get_mapping_status,

	TP_PROTO(struct mptcp_ext *mpext),

	TP_ARGS(mpext));



#endif /* _TRACE_MPTCP_H */



/* This part must be outside protection */

net/mptcp/subflow.c

+3 −3
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 
#include "protocol.h"

#include "mib.h"



#include <trace/events/mptcp.h>



static void mptcp_subflow_ops_undo_override(struct sock *ssk);



static void SUBFLOW_REQ_INC_STATS(struct request_sock *req,
@@ -862,9 +864,7 @@ static enum mapping_status get_mapping_status(struct sock *ssk, 
		goto validate_seq;

	}



	pr_debug("seq=%llu is64=%d ssn=%u data_len=%u data_fin=%d",

		 mpext->data_seq, mpext->dsn64, mpext->subflow_seq,

		 mpext->data_len, mpext->data_fin);

	trace_get_mapping_status(mpext);



	data_len = mpext->data_len;

	if (data_len == 0) {