netdev - Re: [PATCH v3 bpf 0/3] Introduce BPF_ANNOTATE_KV

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Date:   Wed, 25 Jul 2018 07:04:47 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Martin KaFai Lau <kafai@...com>, netdev@...r.kernel.org
Cc:     Alexei Starovoitov <ast@...com>, kernel-team@...com
Subject: Re: [PATCH v3 bpf 0/3] Introduce BPF_ANNOTATE_KV_PAIR

On 07/24/2018 05:40 PM, Martin KaFai Lau wrote:
> The series allows the BPF loader to figure out
> the btf_key_id and btf_value_id from a map's name
> by using BPF_ANNOTATE_KV_PAIR.  It also removes
> the old 'typedef' way which requires two separate
> typedefs (one for the key and one for the value).
> 
> By doing this, iproute2 and libbpf have one
> consistent way to figure out the btf_key_type_id and
> btf_value_type_id for a map.
> 
> The first two patches are some prep/cleanup works.
> The last patch introduces BPF_ANNOTATE_KV_PAIR.
> 
> v3:
> - Replace some more *int*_t and u* usages with the
>   equivalent __[su]* in btf.c
> v2:
> - Fix the incorrect '&&' check on container_type
>   in bpf_map_find_btf_info().
> - Expose the existing static btf_type_by_id() instead of
>   creating a new one.
> 
> Martin KaFai Lau (3):
>   bpf: btf: Sync uapi btf.h to tools
>   bpf: Replace [u]int32_t and [u]int64_t in libbpf
>   bpf: Introduce BPF_ANNOTATE_KV_PAIR
> 
>  tools/include/uapi/linux/btf.h               |  2 +-
>  tools/lib/bpf/btf.c                          | 39 +++++----
>  tools/lib/bpf/btf.h                          | 10 ++-
>  tools/lib/bpf/libbpf.c                       | 85 +++++++++++---------
>  tools/lib/bpf/libbpf.h                       |  4 +-
>  tools/testing/selftests/bpf/bpf_helpers.h    |  9 +++
>  tools/testing/selftests/bpf/test_btf_haskv.c |  7 +-
>  7 files changed, 83 insertions(+), 73 deletions(-)
> 

Applied to bpf, thanks Martin!