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Date:   Fri, 15 Apr 2022 17:10:38 -0700
From:   Eric Dumazet <>
To:     "David S . Miller" <>,
        Jakub Kicinski <>,
        Paolo Abeni <>
Cc:     netdev <>,
        Eric Dumazet <>,
        Eric Dumazet <>
Subject: [PATCH net-next 00/10] tcp: drop reason additions

From: Eric Dumazet <>

Currently, TCP is either missing drop reasons,
or pretending that some useful packets are dropped.

This patch series makes "perf record -a -e skb:kfree_skb"
much more usable.

Eric Dumazet (10):
  tcp: consume incoming skb leading to a reset
  tcp: get rid of rst_seq_match
  tcp: add drop reason support to tcp_validate_incoming()
  tcp: make tcp_rcv_state_process() drop monitor friendly
  tcp: add drop reasons to tcp_rcv_state_process()
  tcp: add two drop reasons for tcp_ack()
  tcp: add drop reason support to tcp_prune_ofo_queue()
  tcp: make tcp_rcv_synsent_state_process() drop monitor friend
  tcp: add drop reasons to tcp_rcv_synsent_state_process()
  tcp: add drop reason support to tcp_ofo_queue()

 include/linux/skbuff.h     |  13 ++++
 include/trace/events/skb.h |  14 ++++
 net/ipv4/tcp_input.c       | 127 +++++++++++++++++++++----------------
 3 files changed, 100 insertions(+), 54 deletions(-)


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