From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Daniel Mack <daniel@zonque.org>
Cc: htejun@fb.com, daniel@iogearbox.net, ast@fb.com,
davem@davemloft.net, kafai@fb.com, fw@strlen.de,
harald@redhat.com, netdev@vger.kernel.org, sargun@sargun.me,
cgroups@vger.kernel.org
Subject: Re: [PATCH v6 5/6] net: ipv4, ipv6: run cgroup eBPF egress programs
Date: Tue, 20 Sep 2016 16:29:31 +0200 [thread overview]
Message-ID: <20160920142931.GA31438@salvia> (raw)
In-Reply-To: <83afdc54-1bbe-3530-e5fd-b74fefe9a042@zonque.org>
On Mon, Sep 19, 2016 at 10:56:14PM +0200, Daniel Mack wrote:
[...]
> Why would we artificially limit the use-cases of this implementation if
> the way it stands, both filtering and introspection are possible?
Why should we place infrastructure in the kernel to filter packets so
late, and why at postrouting btw, when we can do this way earlier
before any packet is actually sent? No performance impact, no need for
skbuff allocation and *no cycles wasted to evaluate if every packet is
wanted or not*.
next prev parent reply other threads:[~2016-09-20 14:29 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-19 16:43 [PATCH v6 0/6] Add eBPF hooks for cgroups Daniel Mack
2016-09-19 16:43 ` [PATCH v6 1/6] bpf: add new prog type for cgroup socket filtering Daniel Mack
2016-09-19 16:43 ` [PATCH v6 3/6] bpf: add BPF_PROG_ATTACH and BPF_PROG_DETACH commands Daniel Mack
[not found] ` <1474303441-3745-1-git-send-email-daniel-cYrQPVfZoowdnm+yROfE0A@public.gmane.org>
2016-09-19 16:43 ` [PATCH v6 2/6] cgroup: add support for eBPF programs Daniel Mack
2016-09-19 16:43 ` [PATCH v6 4/6] net: filter: run cgroup eBPF ingress programs Daniel Mack
2016-09-19 16:44 ` [PATCH v6 5/6] net: ipv4, ipv6: run cgroup eBPF egress programs Daniel Mack
2016-09-19 19:19 ` Pablo Neira Ayuso
2016-09-19 19:30 ` Daniel Mack
[not found] ` <ac88bb4c-ab7c-1f74-c7fd-79e523b50ae4-cYrQPVfZoowdnm+yROfE0A@public.gmane.org>
2016-09-19 20:35 ` Pablo Neira Ayuso
2016-09-19 20:56 ` Daniel Mack
2016-09-20 14:29 ` Pablo Neira Ayuso [this message]
2016-09-20 16:43 ` Daniel Mack
[not found] ` <6584b975-fa3e-8d98-f0c7-a2c6b194b2b6-cYrQPVfZoowdnm+yROfE0A@public.gmane.org>
2016-09-21 15:45 ` Pablo Neira Ayuso
2016-09-21 18:48 ` Thomas Graf
[not found] ` <20160921184827.GA15732-4EA/1caXOu0mYvmMESoHnA@public.gmane.org>
2016-09-22 9:21 ` Pablo Neira Ayuso
2016-09-22 9:54 ` Thomas Graf
[not found] ` <20160922095411.GA5654-4EA/1caXOu0mYvmMESoHnA@public.gmane.org>
2016-09-22 12:05 ` Pablo Neira Ayuso
2016-09-22 15:12 ` Daniel Borkmann
[not found] ` <57E3F4F9.70300-FeC+5ew28dpmcu3hnIyYJQ@public.gmane.org>
2016-09-22 15:53 ` Daniel Mack
2016-09-23 13:17 ` [PATCH v6 5/6] net: ipv4, ipv6: run cgroup ebpf " Pablo Neira Ayuso
2016-09-26 10:10 ` Daniel Borkmann
2016-09-20 16:53 ` [PATCH v6 5/6] net: ipv4, ipv6: run cgroup eBPF " Thomas Graf
2016-09-19 20:13 ` Alexei Starovoitov
2016-09-19 20:39 ` Pablo Neira Ayuso
[not found] ` <20160919201322.GA84770-+o4/htvd0TDFYCXBM6kdu7fOX0fSgVTm@public.gmane.org>
2016-09-19 21:28 ` Thomas Graf
[not found] ` <1474303441-3745-6-git-send-email-daniel-cYrQPVfZoowdnm+yROfE0A@public.gmane.org>
2016-09-20 5:44 ` kbuild test robot
2016-10-21 5:32 ` [PATCH v6 0/6] Add eBPF hooks for cgroups David Ahern
2016-09-19 16:44 ` [PATCH v6 6/6] samples: bpf: add userspace example for attaching eBPF programs to cgroups Daniel Mack
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