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skmsg: Extract __tcp_bpf_recvmsg() and tcp_bpf_wait_data()

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Although these two functions are only used by TCP, they are not
specific to TCP at all, both operate on skmsg and ingress_msg,
so fit in net/core/skmsg.c very well.

And we will need them for non-TCP, so rename and move them to
skmsg.c and export them to modules.

Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210331023237.41094-13-xiyou.wangcong@gmail.com
This commit is contained in:
Cong Wang
2021-03-30 19:32:33 -07:00
committed by Alexei Starovoitov
parent d7f571188e
commit 2bc793e327
5 changed files with 106 additions and 102 deletions
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2
include/net/tcp.h
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@@ -2209,8 +2209,6 @@ void tcp_bpf_clone(const struct sock *sk, struct sock *newsk);
int tcp_bpf_sendmsg_redir(struct sock *sk, struct sk_msg *msg, u32 bytes,
int flags);
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)