netdev - [PATCH bpf v3 0/2] bpf: Fix src IP addr related limitation in bpf_*_fib

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Message-ID: <20231007081415.33502-1-m@lambda.lt>
Date: Sat,  7 Oct 2023 10:14:13 +0200
From: Martynas Pumputis <m@...bda.lt>
To: bpf@...r.kernel.org
Cc: Daniel Borkmann <daniel@...earbox.net>,
	netdev@...r.kernel.org,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Martynas Pumputis <m@...bda.lt>
Subject: [PATCH bpf v3 0/2] bpf: Fix src IP addr related limitation in bpf_*_fib_lookup()

The patchset fixes the limitation of bpf_*_fib_lookup() helper, which
prevents it from being used in BPF dataplanes with network interfaces
which have more than one IP addr. See the first patch for more details.
Thanks!

* v2->v3: Address Martin KaFai Lau's feedback
* v1->v2: Use IPv6 stubs to fix compilation when CONFIG_IPV6=m.

Martynas Pumputis (2):
  bpf: Derive source IP addr via bpf_*_fib_lookup()
  selftests/bpf: Add BPF_FIB_LOOKUP_SET_SRC tests

 include/uapi/linux/bpf.h                      |  9 +++
 net/core/filter.c                             | 13 +++-
 tools/include/uapi/linux/bpf.h                | 10 +++
 .../selftests/bpf/prog_tests/fib_lookup.c     | 76 +++++++++++++++++--
 4 files changed, 101 insertions(+), 7 deletions(-)

-- 
2.42.0