From: Cong Wang <cong.wang@bytedance.com>
Date: Fri, 8 Oct 2021 13:33:03 -0700
Subject: net: Rename ->stream_memory_read to ->sock_is_readable
Patch-mainline: v5.15
Git-commit: 7b50ecfcc6cdfe87488576bc3ed443dc8d083b90
References: jsc#PED-1377
The proto ops ->stream_memory_read() is currently only used
by TCP to check whether psock queue is empty or not. We need
to rename it before reusing it for non-TCP protocols, and
adjust the exsiting users accordingly.
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211008203306.37525-2-xiyou.wangcong@gmail.com
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
---
include/net/sock.h | 8 +++++++-
include/net/tls.h | 2 +-
net/ipv4/tcp.c | 5 +----
net/ipv4/tcp_bpf.c | 4 ++--
net/tls/tls_main.c | 4 ++--
net/tls/tls_sw.c | 2 +-
6 files changed, 14 insertions(+), 11 deletions(-)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1206,7 +1206,7 @@ struct proto {
#endif
bool (*stream_memory_free)(const struct sock *sk, int wake);
- bool (*stream_memory_read)(const struct sock *sk);
+ bool (*sock_is_readable)(struct sock *sk);
/* Memory pressure */
void (*enter_memory_pressure)(struct sock *sk);
void (*leave_memory_pressure)(struct sock *sk);
@@ -2815,4 +2815,10 @@ void sock_set_sndtimeo(struct sock *sk,
int sock_bind_add(struct sock *sk, struct sockaddr *addr, int addr_len);
+static inline bool sk_is_readable(struct sock *sk)
+{
+ if (sk->sk_prot->sock_is_readable)
+ return sk->sk_prot->sock_is_readable(sk);
+ return false;
+}
#endif /* _SOCK_H */
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -375,7 +375,7 @@ void tls_sw_release_resources_rx(struct
void tls_sw_free_ctx_rx(struct tls_context *tls_ctx);
int tls_sw_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
int nonblock, int flags, int *addr_len);
-bool tls_sw_stream_read(const struct sock *sk);
+bool tls_sw_sock_is_readable(struct sock *sk);
ssize_t tls_sw_splice_read(struct socket *sock, loff_t *ppos,
struct pipe_inode_info *pipe,
size_t len, unsigned int flags);
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -486,10 +486,7 @@ static bool tcp_stream_is_readable(struc
{
if (tcp_epollin_ready(sk, target))
return true;
-
- if (sk->sk_prot->stream_memory_read)
- return sk->sk_prot->stream_memory_read(sk);
- return false;
+ return sk_is_readable(sk);
}
/*
--- a/net/ipv4/tcp_bpf.c
+++ b/net/ipv4/tcp_bpf.c
@@ -150,7 +150,7 @@ int tcp_bpf_sendmsg_redir(struct sock *s
EXPORT_SYMBOL_GPL(tcp_bpf_sendmsg_redir);
#ifdef CONFIG_BPF_SYSCALL
-static bool tcp_bpf_stream_read(const struct sock *sk)
+static bool tcp_bpf_sock_is_readable(struct sock *sk)
{
struct sk_psock *psock;
bool empty = true;
@@ -491,7 +491,7 @@ static void tcp_bpf_rebuild_protos(struc
prot[TCP_BPF_BASE].unhash = sock_map_unhash;
prot[TCP_BPF_BASE].close = sock_map_close;
prot[TCP_BPF_BASE].recvmsg = tcp_bpf_recvmsg;
- prot[TCP_BPF_BASE].stream_memory_read = tcp_bpf_stream_read;
+ prot[TCP_BPF_BASE].sock_is_readable = tcp_bpf_sock_is_readable;
prot[TCP_BPF_TX] = prot[TCP_BPF_BASE];
prot[TCP_BPF_TX].sendmsg = tcp_bpf_sendmsg;
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -681,12 +681,12 @@ static void build_protos(struct proto pr
prot[TLS_BASE][TLS_SW] = prot[TLS_BASE][TLS_BASE];
prot[TLS_BASE][TLS_SW].recvmsg = tls_sw_recvmsg;
- prot[TLS_BASE][TLS_SW].stream_memory_read = tls_sw_stream_read;
+ prot[TLS_BASE][TLS_SW].sock_is_readable = tls_sw_sock_is_readable;
prot[TLS_BASE][TLS_SW].close = tls_sk_proto_close;
prot[TLS_SW][TLS_SW] = prot[TLS_SW][TLS_BASE];
prot[TLS_SW][TLS_SW].recvmsg = tls_sw_recvmsg;
- prot[TLS_SW][TLS_SW].stream_memory_read = tls_sw_stream_read;
+ prot[TLS_SW][TLS_SW].sock_is_readable = tls_sw_sock_is_readable;
prot[TLS_SW][TLS_SW].close = tls_sk_proto_close;
#ifdef CONFIG_TLS_DEVICE
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -2026,7 +2026,7 @@ splice_read_end:
return copied ? : err;
}
-bool tls_sw_stream_read(const struct sock *sk)
+bool tls_sw_sock_is_readable(struct sock *sk)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);
struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx);