Commit ed66bfb4 authored by Geliang Tang's avatar Geliang Tang Committed by David S. Miller
Browse files

mptcp: add tracepoint in ack_update_msk 



This patch added a tracepoint in ack_update_msk() to track the
incoming data_ack and window/snd_una updates.

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 0918e34b

include/trace/events/mptcp.h

+32 −0
Original line number Diff line number Diff line
@@ -106,6 +106,38 @@ DEFINE_EVENT(mptcp_dump_mpext, get_mapping_status, 
	TP_PROTO(struct mptcp_ext *mpext),

	TP_ARGS(mpext));



TRACE_EVENT(ack_update_msk,



	TP_PROTO(u64 data_ack, u64 old_snd_una,

		 u64 new_snd_una, u64 new_wnd_end,

		 u64 msk_wnd_end),



	TP_ARGS(data_ack, old_snd_una,

		new_snd_una, new_wnd_end,

		msk_wnd_end),



	TP_STRUCT__entry(

		__field(u64, data_ack)

		__field(u64, old_snd_una)

		__field(u64, new_snd_una)

		__field(u64, new_wnd_end)

		__field(u64, msk_wnd_end)

	),



	TP_fast_assign(

		__entry->data_ack = data_ack;

		__entry->old_snd_una = old_snd_una;

		__entry->new_snd_una = new_snd_una;

		__entry->new_wnd_end = new_wnd_end;

		__entry->msk_wnd_end = msk_wnd_end;

	),



	TP_printk("data_ack=%llu old_snd_una=%llu new_snd_una=%llu new_wnd_end=%llu msk_wnd_end=%llu",

		  __entry->data_ack, __entry->old_snd_una,

		  __entry->new_snd_una, __entry->new_wnd_end,

		  __entry->msk_wnd_end)

);



#endif /* _TRACE_MPTCP_H */



/* This part must be outside protection */

net/mptcp/options.c

+6 −0
Original line number Diff line number Diff line
@@ -13,6 +13,8 @@ 
#include "protocol.h"

#include "mib.h"



#include <trace/events/mptcp.h>



static bool mptcp_cap_flag_sha256(u8 flags)

{

	return (flags & MPTCP_CAP_FLAG_MASK) == MPTCP_CAP_HMAC_SHA256;
@@ -943,6 +945,10 @@ static void ack_update_msk(struct mptcp_sock *msk, 
		__mptcp_data_acked(sk);

	}

	mptcp_data_unlock(sk);



	trace_ack_update_msk(mp_opt->data_ack,

			     old_snd_una, new_snd_una,

			     new_wnd_end, msk->wnd_end);

}



bool mptcp_update_rcv_data_fin(struct mptcp_sock *msk, u64 data_fin_seq, bool use_64bit)