From: Lorenz Bauer <lmb@isovalent.com>
To: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>,
David Ahern <dsahern@kernel.org>,
Willem de Bruijn <willemdebruijn.kernel@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>, Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>, Joe Stringer <joe@wand.net.nz>,
Mykola Lysenko <mykolal@fb.com>, Shuah Khan <shuah@kernel.org>,
Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: Hemanth Malla <hemanthmalla@gmail.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
bpf@vger.kernel.org, linux-kselftest@vger.kernel.org,
Lorenz Bauer <lmb@isovalent.com>, Joe Stringer <joe@cilium.io>
Subject: [PATCH bpf-next v2 0/6] Add SO_REUSEPORT support for TC bpf_sk_assign
Date: Tue, 13 Jun 2023 11:14:55 +0100 [thread overview]
Message-ID: <20230613-so-reuseport-v2-0-b7c69a342613@isovalent.com> (raw)
We want to replace iptables TPROXY with a BPF program at TC ingress.
To make this work in all cases we need to assign a SO_REUSEPORT socket
to an skb, which is currently prohibited. This series adds support for
such sockets to bpf_sk_assing. See patch 5 for details.
I did some refactoring to cut down on the amount of duplicate code. The
key to this is to use INDIRECT_CALL in the reuseport helpers. To show
that this approach is not just beneficial to TC sk_assign I removed
duplicate code for bpf_sk_lookup as well.
Changes from v1:
- Correct commit abbrev length (Kuniyuki)
- Reduce duplication (Kuniyuki)
- Add checks on sk_state (Martin)
- Split exporting inet[6]_lookup_reuseport into separate patch (Eric)
Joint work with Daniel Borkmann.
Signed-off-by: Lorenz Bauer <lmb@isovalent.com>
---
Daniel Borkmann (1):
selftests/bpf: Test that SO_REUSEPORT can be used with sk_assign helper
Lorenz Bauer (5):
net: export inet_lookup_reuseport and inet6_lookup_reuseport
net: document inet[6]_lookup_reuseport sk_state requirements
net: remove duplicate reuseport_lookup functions
net: remove duplicate sk_lookup helpers
bpf, net: Support SO_REUSEPORT sockets with bpf_sk_assign
include/net/inet6_hashtables.h | 84 ++++++++-
include/net/inet_hashtables.h | 77 +++++++-
include/net/sock.h | 7 +-
include/uapi/linux/bpf.h | 3 -
net/core/filter.c | 2 -
net/ipv4/inet_hashtables.c | 69 +++++---
net/ipv4/udp.c | 73 +++-----
net/ipv6/inet6_hashtables.c | 71 +++++---
net/ipv6/udp.c | 85 +++------
tools/include/uapi/linux/bpf.h | 3 -
tools/testing/selftests/bpf/network_helpers.c | 3 +
.../selftests/bpf/prog_tests/assign_reuse.c | 197 +++++++++++++++++++++
.../selftests/bpf/progs/test_assign_reuse.c | 142 +++++++++++++++
13 files changed, 637 insertions(+), 179 deletions(-)
---
base-commit: 25085b4e9251c77758964a8e8651338972353642
change-id: 20230613-so-reuseport-e92c526173ee
Best regards,
--
Lorenz Bauer <lmb@isovalent.com>
next reply other threads:[~2023-06-13 10:15 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-13 10:14 Lorenz Bauer [this message]
2023-06-13 10:14 ` [PATCH bpf-next v2 1/6] net: export inet_lookup_reuseport and inet6_lookup_reuseport Lorenz Bauer
2023-06-13 10:14 ` [PATCH bpf-next v2 2/6] net: document inet[6]_lookup_reuseport sk_state requirements Lorenz Bauer
2023-06-13 10:14 ` [PATCH bpf-next v2 3/6] net: remove duplicate reuseport_lookup functions Lorenz Bauer
2023-06-13 15:32 ` Simon Horman
2023-06-14 15:42 ` Lorenz Bauer
2023-06-15 7:21 ` Simon Horman
2023-06-13 17:26 ` kernel test robot
2023-06-13 18:56 ` Kuniyuki Iwashima
2023-06-14 15:25 ` Lorenz Bauer
2023-06-14 16:52 ` Kuniyuki Iwashima
2023-06-20 14:26 ` Lorenz Bauer
2023-06-20 18:31 ` Kuniyuki Iwashima
2023-06-21 8:01 ` Lorenz Bauer
2023-06-21 13:49 ` Lorenz Bauer
2023-06-21 15:00 ` Kuniyuki Iwashima
2023-06-13 10:14 ` [PATCH bpf-next v2 4/6] net: remove duplicate sk_lookup helpers Lorenz Bauer
2023-06-13 19:03 ` Kuniyuki Iwashima
2023-06-13 19:41 ` kernel test robot
2023-06-13 10:15 ` [PATCH bpf-next v2 5/6] bpf, net: Support SO_REUSEPORT sockets with bpf_sk_assign Lorenz Bauer
2023-06-13 17:26 ` kernel test robot
2023-06-13 10:15 ` [PATCH bpf-next v2 6/6] selftests/bpf: Test that SO_REUSEPORT can be used with sk_assign helper Lorenz Bauer
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