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From: Song Liu <song@kernel.org>
To: Lingpeng Chen <forrest0579@gmail.com>
Cc: bpf <bpf@vger.kernel.org>, Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	John Fastabend <john.fastabend@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	Networking <netdev@vger.kernel.org>,
	Petar Penkov <ppenkov.kernel@gmail.com>
Subject: Re: [PATCH v4 bpf-next 1/3] bpf: Add get_netns_id helper function for sock_ops
Date: Mon, 24 Feb 2020 21:54:19 -0800	[thread overview]
Message-ID: <CAPhsuW7TWV0=ed0tk2OkX5cERb-kKJukfZ+mkd1Ddh2kPBwnyg@mail.gmail.com> (raw)
In-Reply-To: <20200225044538.61889-2-forrest0579@gmail.com>

On Mon, Feb 24, 2020 at 8:46 PM Lingpeng Chen <forrest0579@gmail.com> wrote:
>
> 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_get_netns_id helper to get current connection
> netns id to distinguish connections.
>
> Signed-off-by: Lingpeng Chen <forrest0579@gmail.com>

Acked-by: Song Liu <songliubraving@fb.com>

  reply	other threads:[~2020-02-25  5:54 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-06  8:35 [PATCH bpf-next 0/2] bpf: Add sock ops get netns helpers Lingpeng Chen
2020-02-06  8:35 ` [PATCH bpf-next 1/2] " Lingpeng Chen
2020-02-06 18:48   ` Petar Penkov
2020-02-08  0:14   ` kbuild test robot
2020-02-06  8:35 ` [PATCH bpf-next 2/2] bpf: Sync uapi bpf.h to tools/ Lingpeng Chen
2020-02-18  9:15 ` [PATCH v2 bpf-next 0/3] bpf: Add sock_ops_get_netns helpers Lingpeng Chen
2020-02-18  9:15   ` [PATCH v2 bpf-next 1/3] bpf: Add sock ops get netns helpers Lingpeng Chen
2020-02-20  0:04     ` Daniel Borkmann
2020-02-20  7:10       ` [PATCH v3 bpf-next 0/3] bpf: Add get_netns_id helper for sock_ops Lingpeng Chen
2020-02-20  7:10         ` [PATCH v3 bpf-next 1/3] bpf: Add get_netns_id helper function " Lingpeng Chen
2020-02-24 23:48           ` Song Liu
2020-02-25  4:45             ` [PATCH v4 bpf-next 0/3] bpf: Add get_netns_id helper " Lingpeng Chen
2020-02-25  4:45               ` [PATCH v4 bpf-next 1/3] bpf: Add get_netns_id helper function " Lingpeng Chen
2020-02-25  5:54                 ` Song Liu [this message]
2020-02-25  4:45               ` [PATCH v4 bpf-next 2/3] bpf: Sync uapi bpf.h to tools/ Lingpeng Chen
2020-02-25  4:45               ` [PATCH v4 bpf-next 3/3] selftests/bpf: add selftest for get_netns_id helper Lingpeng Chen
2020-02-25  6:13                 ` Andrii Nakryiko
     [not found]                   ` <CAH+Qyb+rQeebkb1TtLuNHPLmf-VRLqj1yvsHXtaqfzHKMA4azQ@mail.gmail.com>
2020-02-25 17:13                     ` Andrii Nakryiko
     [not found]                       ` <CAH+Qyb+-Q7OSrobdojRiep5cmnzwfMnGJ2HPfjvEPiTPtse+LQ@mail.gmail.com>
2020-02-26  4:35                         ` Andrii Nakryiko
2020-03-02  8:23               ` [PATCH v4 bpf-next 0/3] bpf: Add get_netns_id helper for sock_ops Forrest Chen
2020-02-20  7:10         ` [PATCH v3 bpf-next 2/3] bpf: Sync uapi bpf.h to tools/ Lingpeng Chen
2020-02-24 23:49           ` Song Liu
2020-02-20  7:10         ` [PATCH v3 bpf-next 3/3] selftests/bpf: add selftest for get_netns_id helper Lingpeng Chen
2020-02-24 23:55           ` Song Liu
2020-02-18  9:15   ` [PATCH v2 bpf-next 2/3] bpf: Sync uapi bpf.h to tools/ Lingpeng Chen
2020-02-18  9:15   ` [PATCH v2 bpf-next 3/3] selftests/bpf: add selftest for sock_ops_get_netns helper Lingpeng Chen

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