diff options
| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2022-04-11 14:49:55 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-04-12 15:00:25 +0200 |
| commit | ec095263a965720e1ca39db1d9c5cd47846c789b (patch) | |
| tree | f88e25dfa22ee4da19c1cba18eac627aec42aebb /net/ipv4/tcp.c | |
| parent | f01598090048f5f732ea7aa64b2f194131ce60d2 (diff) | |
| download | linux-ec095263a965720e1ca39db1d9c5cd47846c789b.tar.gz | |
net: remove noblock parameter from recvmsg() entities
The internal recvmsg() functions have two parameters 'flags' and 'noblock'
that were merged inside skb_recv_datagram(). As a follow up patch to commit
f4b41f062c42 ("net: remove noblock parameter from skb_recv_datagram()")
this patch removes the separate 'noblock' parameter for recvmsg().
Analogue to the referenced patch for skb_recv_datagram() the 'flags' and
'noblock' parameters are unnecessarily split up with e.g.
err = sk->sk_prot->recvmsg(sk, msg, size, flags & MSG_DONTWAIT,
flags & ~MSG_DONTWAIT, &addr_len);
or in
err = INDIRECT_CALL_2(sk->sk_prot->recvmsg, tcp_recvmsg, udp_recvmsg,
sk, msg, size, flags & MSG_DONTWAIT,
flags & ~MSG_DONTWAIT, &addr_len);
instead of simply using only flags all the time and check for MSG_DONTWAIT
where needed (to preserve for the formerly separated no(n)block condition).
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20220411124955.154876-1-socketcan@hartkopp.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index e31cf137c614..e20b87b3bf90 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1877,8 +1877,7 @@ static void tcp_zerocopy_set_hint_for_skb(struct sock *sk, } static int tcp_recvmsg_locked(struct sock *sk, struct msghdr *msg, size_t len, - int nonblock, int flags, - struct scm_timestamping_internal *tss, + int flags, struct scm_timestamping_internal *tss, int *cmsg_flags); static int receive_fallback_to_copy(struct sock *sk, struct tcp_zerocopy_receive *zc, int inq, @@ -1900,7 +1899,7 @@ static int receive_fallback_to_copy(struct sock *sk, if (err) return err; - err = tcp_recvmsg_locked(sk, &msg, inq, /*nonblock=*/1, /*flags=*/0, + err = tcp_recvmsg_locked(sk, &msg, inq, MSG_DONTWAIT, tss, &zc->msg_flags); if (err < 0) return err; @@ -2316,8 +2315,7 @@ static int tcp_inq_hint(struct sock *sk) */ static int tcp_recvmsg_locked(struct sock *sk, struct msghdr *msg, size_t len, - int nonblock, int flags, - struct scm_timestamping_internal *tss, + int flags, struct scm_timestamping_internal *tss, int *cmsg_flags) { struct tcp_sock *tp = tcp_sk(sk); @@ -2337,7 +2335,7 @@ static int tcp_recvmsg_locked(struct sock *sk, struct msghdr *msg, size_t len, if (tp->recvmsg_inq) *cmsg_flags = TCP_CMSG_INQ; - timeo = sock_rcvtimeo(sk, nonblock); + timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); /* Urgent data needs to be handled specially. */ if (flags & MSG_OOB) @@ -2556,8 +2554,8 @@ recv_sndq: goto out; } -int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock, - int flags, int *addr_len) +int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags, + int *addr_len) { int cmsg_flags = 0, ret, inq; struct scm_timestamping_internal tss; @@ -2568,11 +2566,10 @@ int tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int nonblock, if (sk_can_busy_loop(sk) && skb_queue_empty_lockless(&sk->sk_receive_queue) && sk->sk_state == TCP_ESTABLISHED) - sk_busy_loop(sk, nonblock); + sk_busy_loop(sk, flags & MSG_DONTWAIT); lock_sock(sk); - ret = tcp_recvmsg_locked(sk, msg, len, nonblock, flags, &tss, - &cmsg_flags); + ret = tcp_recvmsg_locked(sk, msg, len, flags, &tss, &cmsg_flags); release_sock(sk); sk_defer_free_flush(sk); |