bpf: allow BPF programs access skb_shared_info->gso_segs field

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This adds the ability to read gso_segs from a BPF program.

v3: Use BPF_REG_AX instead of BPF_REG_TMP for the temporary register,
    as suggested by Martin.

v2: refined Eddie Hao patch to address Alexei feedback.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Eddie Hao <eddieh@google.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Eric Dumazet 2019-01-23 09:22:27 -08:00 • committed by Daniel Borkmann

parent 866e6ac474

commit d9ff286a0f

4 changed files with 59 additions and 0 deletions

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include/uapi/linux/bpf.h

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