netdev - [PATCH bpf-next v3 0/2] Get ingress_ifindex in BPF_SK

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Message-Id: <20211110111016.5670-1-markpash@cloudflare.com>
Date:   Wed, 10 Nov 2021 11:10:14 +0000
From:   Mark Pashmfouroush <markpash@...udflare.com>
To:     markpash@...udflare.com, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Cc:     kernel-team@...udflare.com, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: [PATCH bpf-next v3 0/2] Get ingress_ifindex in BPF_SK_LOOKUP prog type

BPF_SK_LOOKUP users may want to have access to the ifindex of the skb
which triggered the socket lookup. This may be useful for selectively
applying programmable socket lookup logic to packets that arrive on a
specific interface, or excluding packets from an interface.

v3:
- Rename ifindex field to ingress_ifindex for consistency. (Yonghong)

v2:
- Fix inaccurate comment (Alexei)
- Add more details to commit messages (John)

Mark Pashmfouroush (2):
  bpf: Add ingress_ifindex to bpf_sk_lookup
  selftests/bpf: Add tests for accessing ingress_ifindex in
    bpf_sk_lookup

 include/linux/filter.h                        |  7 ++--
 include/uapi/linux/bpf.h                      |  1 +
 net/core/filter.c                             |  7 ++++
 net/ipv4/inet_hashtables.c                    |  8 ++---
 net/ipv4/udp.c                                |  8 ++---
 net/ipv6/inet6_hashtables.c                   |  8 ++---
 net/ipv6/udp.c                                |  8 ++---
 tools/include/uapi/linux/bpf.h                |  1 +
 .../selftests/bpf/prog_tests/sk_lookup.c      | 31 ++++++++++++++++++
 .../selftests/bpf/progs/test_sk_lookup.c      |  8 +++++
 .../selftests/bpf/verifier/ctx_sk_lookup.c    | 32 +++++++++++++++++++
 11 files changed, 101 insertions(+), 18 deletions(-)

-- 
2.31.1