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Date: Thu, 3 Dec 2020 17:39:22 -0800 From: Martin KaFai Lau <kafai@...com> To: Florent Revest <revest@...omium.org> CC: <bpf@...r.kernel.org>, <viro@...iv.linux.org.uk>, <davem@...emloft.net>, <kuba@...nel.org>, <ast@...nel.org>, <daniel@...earbox.net>, <yhs@...com>, <andrii@...nel.org>, <kpsingh@...omium.org>, <revest@...gle.com>, <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org> Subject: Re: [PATCH bpf-next v4 5/6] bpf: Add an iterator selftest for bpf_sk_storage_get On Wed, Dec 02, 2020 at 09:55:26PM +0100, Florent Revest wrote: > The eBPF program iterates over all files and tasks. For all socket > files, it stores the tgid of the last task it encountered with a handle > to that socket. This is a heuristic for finding the "owner" of a socket > similar to what's done by lsof, ss, netstat or fuser. Potentially, this > information could be used from a cgroup_skb/*gress hook to try to > associate network traffic with processes. > > The test makes sure that a socket it created is tagged with prog_tests's > pid. Acked-by: Martin KaFai Lau <kafai@...com>
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