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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: Paolo Abeni <pabeni@redhat.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang 2021-04-16 15:38:06 -07:00 committed by David S. Miller
parent 0918e34b85
commit ed66bfb4ce
2 changed files with 38 additions and 0 deletions
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32
include/trace/events/mptcp.h
View File

@ -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 */

6
net/mptcp/options.c
View File

@ -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)