From: Alexei Starovoitov <ast@kernel.org>
Date: Fri, 19 Oct 2018 20:49:35 +0000 (-0700)
Subject: Merge branch 'cg_skb_direct_pkt_access'
X-Git-Tag: v4.20-rc1~151^2~32^2~8
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d375e344781d099697cdc0fb4ee8b9170558f272;p=users%2Fdwmw2%2Flinux.git

Merge branch 'cg_skb_direct_pkt_access'

Song Liu says:

====================
Changes v7 -> v8:
1. Dynamically allocate the dummy sk to avoid race conditions.

Changes v6 -> v7:
1. Make dummy sk a global variable (test_run_sk).

Changes v5 -> v6:
1. Fixed dummy sk in bpf_prog_test_run_skb() as suggested by Eric Dumazet.

Changes v4 -> v5:
1. Replaced bpf_compute_and_save_data_pointers() with
   bpf_compute_and_save_data_end();
   Replaced bpf_restore_data_pointers() with bpf_restore_data_end().
2. Fixed indentation in test_verifier.c

Changes v3 -> v4:
1. Fixed crash issue reported by Alexei.

Changes v2 -> v3:
1. Added helper function bpf_compute_and_save_data_pointers() and
   bpf_restore_data_pointers().

Changes v1 -> v2:
1. Updated the list of read-only fields, and read-write fields.
2. Added dummy sk to bpf_prog_test_run_skb().

This set enables BPF program of type BPF_PROG_TYPE_CGROUP_SKB to access
some __skb_buff data directly.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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d375e344781d099697cdc0fb4ee8b9170558f272