linux-kernel - [RFC] bpf: Suggestion on bpf syscall interface

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Message-ID: <55169240.7040103@huawei.com>
Date:	Sat, 28 Mar 2015 19:36:32 +0800
From:	He Kuang <hekuang@...wei.com>
To:	"ast@...mgrid.com >> Alexei Starovoitov" <ast@...mgrid.com>
CC:	<wangnan0@...wei.com>,
	"linux-kernel@...r.kernel.org >> LKML" <linux-kernel@...r.kernel.org>
Subject: [RFC] bpf: Suggestion on bpf syscall interface

Hi, Alexei

In our end-end IO module project, we use bpf maps to record
configurations. According to current bpf syscall interface, we
should specify map_fd to lookup/update bpf maps, so we are
restricted to do config in the same user program.

My suggestion is to export this kind of operations to sysfs, so
we can load&attach bpf progs and config it seperately. We
implement this feature in our demo project. What's your opinion
on this?

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