bpf: Add setsockopt helper function to bpf

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Added support for calling a subset of socket setsockopts from
BPF_PROG_TYPE_SOCK_OPS programs. The code was duplicated rather
than making the changes to call the socket setsockopt function because
the changes required would have been larger.

The ops supported are:
  SO_RCVBUF
  SO_SNDBUF
  SO_MAX_PACING_RATE
  SO_PRIORITY
  SO_RCVLOWAT
  SO_MARK

Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Lawrence Brakmo 2017-06-30 20:02:46 -07:00 • committed by David S. Miller

parent c400296bf6

commit 8c4b4c7e9f

3 changed files with 94 additions and 2 deletions

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14

include/uapi/linux/bpf.h

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79

net/core/filter.c

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3

samples/bpf/bpf_helpers.h

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