netdev - [PATCH RFC bpf-next 0/2] bpf: Enable bpf_skc_to_* sock casting helper to networking prog type

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Message-ID: <20200912045917.2992578-1-kafai@fb.com>
Date:   Fri, 11 Sep 2020 21:59:17 -0700
From:   Martin KaFai Lau <kafai@...com>
To:     <bpf@...r.kernel.org>
CC:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, <kernel-team@...com>,
        Lorenz Bauer <lmb@...udflare.com>, <netdev@...r.kernel.org>
Subject: [PATCH RFC bpf-next 0/2] bpf: Enable bpf_skc_to_* sock casting helper to networking prog type

This set allows networking prog type to directly read fields from
the in-kernel socket type, e.g. "struct tcp_sock".

Patch 2 has the details on the use case.

It is currently under RFC since it needs proper tests and it builds on
top of Lorenz's patches: 
   https://lore.kernel.org/bpf/20200910125631.225188-1-lmb@cloudflare.com/

Martin KaFai Lau (2):
  bpf: Move the PTR_TO_BTF_ID check to check_reg_type()
  bpf: Enable bpf_skc_to_* sock casting helper to networking prog type

 kernel/bpf/verifier.c | 85 +++++++++++++++++++++++++++----------------
 net/core/filter.c     | 69 +++++++++++++++++++++++++----------
 2 files changed, 103 insertions(+), 51 deletions(-)

-- 
2.24.1