bpf: Add sock_ops RTO callback

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Adds an optional call to sock_ops BPF program based on whether the
BPF_SOCK_OPS_RTO_CB_FLAG is set in bpf_sock_ops_flags.
The BPF program is passed 2 arguments: icsk_retransmits and whether the
RTO has expired.

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 16:14:11 -08:00 • committed by Alexei Starovoitov

parent b13d880721

commit f89013f66d

2 changed files with 14 additions and 1 deletions

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8

include/uapi/linux/bpf.h

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7

net/ipv4/tcp_timer.c

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