diff options
| author | Yafang Shao <[email protected]> | 2018-09-24 20:57:29 +0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-09-26 20:07:19 -0700 |
| commit | af4325ecc24f45933d5567e72227cff2c1594764 (patch) | |
| tree | b63e4f7ea1df4325cdc4292709371498d1ebefb8 /tools/perf/scripts/python/intel-pt-events.py | |
| parent | 0a715156656bddf4aa92d9868f850aeeb0465fd0 (diff) | |
tcp: expose sk_state in tcp_retransmit_skb tracepoint
After sk_state exposed, we can get in which state this retransmission
occurs. That could give us more detail for dignostic.
For example, if this retransmission occurs in SYN_SENT state, it may
also indicates that the syn packet may be dropped on the remote peer due
to syn backlog queue full and then we could check the remote peer.
BTW,SYNACK retransmission is traced in tcp_retransmit_synack tracepoint.
Signed-off-by: Yafang Shao <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/intel-pt-events.py')
0 files changed, 0 insertions, 0 deletions