bpf: Add support for reading sk_state and more

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Add support for reading many more tcp_sock fields

  state,	same as sk->sk_state
  rtt_min	same as sk->rtt_min.s[0].v (current rtt_min)
  snd_ssthresh
  rcv_nxt
  snd_nxt
  snd_una
  mss_cache
  ecn_flags
  rate_delivered
  rate_interval_us
  packets_out
  retrans_out
  total_retrans
  segs_in
  data_segs_in
  segs_out
  data_segs_out
  lost_out
  sacked_out
  sk_txhash
  bytes_received (__u64)
  bytes_acked    (__u64)

Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Lawrence Brakmo 2018-01-25 16:14:12 -08:00 • committed by Alexei Starovoitov

parent f89013f66d

commit 44f0e43037

2 changed files with 154 additions and 11 deletions

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22

include/uapi/linux/bpf.h

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149

net/core/filter.c

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