linux/include/net/netns/bpf.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * BPF programs attached to network namespace
 */

#ifndef __NETNS_BPF_H__
#define __NETNS_BPF_H__

#include <linux/bpf-netns.h>

struct bpf_prog;

struct netns_bpf {
	struct bpf_prog __rcu *progs[MAX_NETNS_BPF_ATTACH_TYPE];
};

#endif /* __NETNS_BPF_H__ */
net: Introduce netns_bpf for BPF programs attached to netns 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 2020-05-31 10:28:36 +02:00			`/* SPDX-License-Identifier: GPL-2.0 */`
			`/*`
			`* BPF programs attached to network namespace`
			`*/`

			`#ifndef __NETNS_BPF_H__`
			`#define __NETNS_BPF_H__`

			`#include <linux/bpf-netns.h>`

			`struct bpf_prog;`

			`struct netns_bpf {`
			`struct bpf_prog __rcu *progs[MAX_NETNS_BPF_ATTACH_TYPE];`
			`};`

			`#endif /* __NETNS_BPF_H__ */`