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a3fd7ceee0
In order to: (1) attach more than one BPF program type to netns, or (2) support attaching BPF programs to netns with bpf_link, or (3) support multi-prog attach points for netns we will need to keep more state per netns than a single pointer like we have now for BPF flow dissector program. Prepare for the above by extracting netns_bpf that is part of struct net, for storing all state related to BPF programs attached to netns. Turn flow dissector callbacks for querying/attaching/detaching a program into generic ones that operate on netns_bpf. Next patch will move the generic callbacks into their own module. This is similar to how it is organized for cgroup with cgroup_bpf. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Cc: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/20200531082846.2117903-3-jakub@cloudflare.com
17 lines
300 B
C
17 lines
300 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* BPF programs attached to network namespace
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*/
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#ifndef __NETNS_BPF_H__
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#define __NETNS_BPF_H__
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#include <linux/bpf-netns.h>
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struct bpf_prog;
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struct netns_bpf {
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struct bpf_prog __rcu *progs[MAX_NETNS_BPF_ATTACH_TYPE];
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};
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#endif /* __NETNS_BPF_H__ */
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