[bpf,V3,0/2] bpf: Updates for BPF-helper bpf_check_mtu

Message

Jesper Dangaard Brouer March 8, 2021, 2:59 p.m. UTC

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
---
V2: Fixed spelling and added ACKs from John

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                           |   16 ++-
 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(+), 7 deletions(-)

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Comments

[e-mail] March 8, 2021, 9:50 p.m. UTC | #1

Hello:

This series was applied to bpf/bpf.git (refs/heads/master):

On Mon, 08 Mar 2021 15:59:13 +0100 you wrote:
> 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").
> 
> [...]

Here is the summary with links:
  - [bpf,V3,1/2] bpf: BPF-helper for MTU checking add length input
    https://git.kernel.org/bpf/bpf/c/e5e35e754c28
  - [bpf,V3,2/2] selftests/bpf: Tests using bpf_check_mtu BPF-helper input mtu_len param
    https://git.kernel.org/bpf/bpf/c/e5e010a3063a

You are awesome, thank you!
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