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BACKPORT: bpf: Clean up sockmap related Kconfigs

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[ Upstream commit 887596095ec2a9ea39ffcf98f27bf2e77c5eb512 ]

As suggested by John, clean up sockmap related Kconfigs:

Reduce the scope of CONFIG_BPF_STREAM_PARSER down to TCP stream
parser, to reflect its name.

Make the rest sockmap code simply depend on CONFIG_BPF_SYSCALL
and CONFIG_INET, the latter is still needed at this point because
of TCP/UDP proto update. And leave CONFIG_NET_SOCK_MSG untouched,
as it is used by non-sockmap cases.

Change-Id: I92d53e4edb7c56a0b60a8c1eefb50fb16db4533f
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Lorenz Bauer <lmb@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20210223184934.6054-2-xiyou.wangcong@gmail.com
Stable-dep-of: 2660a544fdc0 ("net: Fix TOCTOU issue in sk_is_readable()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Tashfin Shakeer Rhythm <tashfinshakeerrhythm@gmail.com>
This commit is contained in:
Cong Wang 2021-02-23 10:49:26 -08:00 • committed by basamaryan
commit 5d7cd6bef6
No known key found for this signature in database
GPG key ID: 210D5384FB2A5885
12 changed files with 132 additions and 102 deletions
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16
include/net/tcp.h
View file

@ -2243,19 +2243,15 @@ void tcp_update_ulp(struct sock *sk, struct proto *p,
__MODULE_INFO(alias, alias_userspace, name); \
__MODULE_INFO(alias, alias_tcp_ulp, "tcp-ulp-" name)
#ifdef CONFIG_NET_SOCK_MSG
struct sk_msg;
struct sk_psock;
#ifdef CONFIG_BPF_STREAM_PARSER
#ifdef CONFIG_BPF_SYSCALL
struct proto *tcp_bpf_get_proto(struct sock *sk, struct sk_psock *psock);
void tcp_bpf_clone(const struct sock *sk, struct sock *newsk);
#else
static inline void tcp_bpf_clone(const struct sock *sk, struct sock *newsk)
{
}
#endif /* CONFIG_BPF_STREAM_PARSER */
#endif /* CONFIG_BPF_SYSCALL */
#ifdef CONFIG_NET_SOCK_MSG
int tcp_bpf_sendmsg_redir(struct sock *sk, struct sk_msg *msg, u32 bytes,
int flags);
int tcp_bpf_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
@ -2264,6 +2260,12 @@ int __tcp_bpf_recvmsg(struct sock *sk, struct sk_psock *psock,
struct msghdr *msg, int len, int flags);
#endif /* CONFIG_NET_SOCK_MSG */
#if !defined(CONFIG_BPF_SYSCALL) || !defined(CONFIG_NET_SOCK_MSG)
static inline void tcp_bpf_clone(const struct sock *sk, struct sock *newsk)
{
}
#endif
#ifdef CONFIG_CGROUP_BPF
/* Copy the listen sk's HDR_OPT_CB flags to its child.
*

4
include/net/udp.h
View file

@ -519,9 +519,9 @@ drop:
return NULL;
}
#ifdef CONFIG_BPF_STREAM_PARSER
#ifdef CONFIG_BPF_SYSCALL
struct sk_psock;
struct proto *udp_bpf_get_proto(struct sock *sk, struct sk_psock *psock);
#endif /* BPF_STREAM_PARSER */
#endif
#endif /* _UDP_H */