From: Jesper Dangaard Brouer <brouer@redhat.com>
To: bpf@vger.kernel.org
Cc: Jesper Dangaard Brouer <brouer@redhat.com>,
netdev@vger.kernel.org, Daniel Borkmann <borkmann@iogearbox.net>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>
Subject: [PATCH bpf-next V1 0/2] bpf: Updates for BPF-helper bpf_check_mtu
Date: Mon, 15 Feb 2021 16:52:37 +0100 [thread overview]
Message-ID: <161340431558.1234345.9778968378565582031.stgit@firesoul> (raw)
The FIB lookup example[1] show how the IP-header field tot_len
(iph->tot_len) is used as input to perform the MTU check. The recently
added MTU check helper bpf_check_mtu() should also support this type
of MTU check.
Lets add this feature before merge window, please. This is a followup
to 34b2021cc616 ("bpf: Add BPF-helper for MTU checking").
[1] samples/bpf/xdp_fwd_kern.c
---
Jesper Dangaard Brouer (2):
bpf: BPF-helper for MTU checking add length input
selftests/bpf: Tests using bpf_check_mtu BPF-helper input mtu_len param
include/uapi/linux/bpf.h | 17 ++--
net/core/filter.c | 12 ++-
tools/testing/selftests/bpf/prog_tests/check_mtu.c | 4 +
tools/testing/selftests/bpf/progs/test_check_mtu.c | 92 ++++++++++++++++++++
4 files changed, 117 insertions(+), 8 deletions(-)
--
next reply other threads:[~2021-02-15 16:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-15 15:52 Jesper Dangaard Brouer [this message]
2021-02-15 15:52 ` [PATCH bpf-next V1 1/2] bpf: BPF-helper for MTU checking add length input Jesper Dangaard Brouer
2021-02-17 20:20 ` John Fastabend
2021-02-15 15:52 ` [PATCH bpf-next V1 2/2] selftests/bpf: Tests using bpf_check_mtu BPF-helper input mtu_len param Jesper Dangaard Brouer
2021-02-17 20:27 ` John Fastabend
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