netdev - [PATCH bpf-next 0/2] bpf: Add sock ops get netns helpers

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Message-Id: <20200206083515.10334-1-forrest0579@gmail.com>
Date:   Thu,  6 Feb 2020 16:35:13 +0800
From:   Lingpeng Chen <forrest0579@...il.com>
To:     bpf <bpf@...r.kernel.org>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        John Fastabend <john.fastabend@...il.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        Lingpeng Chen <forrest0579@...il.com>
Subject: [PATCH bpf-next 0/2] bpf: Add sock ops get netns helpers

Currently 5-tuple(sip+dip+sport+dport+proto) can't identify a
uniq connection because there may be multi net namespace.
For example, there may be a chance that netns a and netns b all
listen on 127.0.0.1:8080 and the client with same port 40782
connect to them. Without netns number, sock ops program
can't distinguish them.
Using bpf_sock_ops_get_netns helpers to get current connection
netns number to distinguish connections.

Lingpeng Chen (2):
  bpf: Add sock ops get netns helpers
  bpf: Sync uapi bpf.h to tools/

 include/uapi/linux/bpf.h       |  8 +++++++-
 net/core/filter.c              | 18 ++++++++++++++++++
 tools/include/uapi/linux/bpf.h |  8 +++++++-
 3 files changed, 32 insertions(+), 2 deletions(-)

-- 
2.17.1