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| author | Paolo Abeni <pabeni@redhat.com> | 2024-03-01 18:43:44 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-03-04 10:50:28 +0000 |
| commit | 037db6ea57da7a134a8183dead92d64ef92babee (patch) | |
| tree | 2fdc9e89f0af7bf2bd3ecb590a605fb0414eae64 /net | |
| parent | 26b5df99bf603d3eb1a0acae239192e7d01c6b0e (diff) | |
| download | linux-stable-037db6ea57da7a134a8183dead92d64ef92babee.tar.gz linux-stable-037db6ea57da7a134a8183dead92d64ef92babee.tar.bz2 linux-stable-037db6ea57da7a134a8183dead92d64ef92babee.zip | |
mptcp: cleanup writer wake-up
After commit 5cf92bbadc58 ("mptcp: re-enable sndbuf autotune"), the
MPTCP_NOSPACE bit is redundant: it is always set and cleared together with
SOCK_NOSPACE.
Let's drop the first and always relay on the latter, dropping a bunch
of useless code.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mptcp/protocol.c | 15 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 16 |
2 files changed, 9 insertions, 22 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 76c8861a852b..a3d79e9d0694 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -1692,15 +1692,6 @@ out: } } -static void mptcp_set_nospace(struct sock *sk) -{ - /* enable autotune */ - set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); - - /* will be cleared on avail space */ - set_bit(MPTCP_NOSPACE, &mptcp_sk(sk)->flags); -} - static int mptcp_disconnect(struct sock *sk, int flags); static int mptcp_sendmsg_fastopen(struct sock *sk, struct msghdr *msg, @@ -1874,7 +1865,7 @@ static int mptcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) continue; wait_for_memory: - mptcp_set_nospace(sk); + set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); __mptcp_push_pending(sk, msg->msg_flags); ret = sk_stream_wait_memory(sk, &timeo); if (ret) @@ -3945,8 +3936,8 @@ static __poll_t mptcp_check_writeable(struct mptcp_sock *msk) if (sk_stream_is_writeable(sk)) return EPOLLOUT | EPOLLWRNORM; - mptcp_set_nospace(sk); - smp_mb__after_atomic(); /* msk->flags is changed by write_space cb */ + set_bit(SOCK_NOSPACE, &sk->sk_socket->flags); + smp_mb__after_atomic(); /* NOSPACE is changed by mptcp_write_space() */ if (sk_stream_is_writeable(sk)) return EPOLLOUT | EPOLLWRNORM; diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index d0a7955b96c4..f0c634e843e6 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -113,10 +113,9 @@ #define MPTCP_RST_TRANSIENT BIT(0) /* MPTCP socket atomic flags */ -#define MPTCP_NOSPACE 1 -#define MPTCP_WORK_RTX 2 -#define MPTCP_FALLBACK_DONE 4 -#define MPTCP_WORK_CLOSE_SUBFLOW 5 +#define MPTCP_WORK_RTX 1 +#define MPTCP_FALLBACK_DONE 2 +#define MPTCP_WORK_CLOSE_SUBFLOW 3 /* MPTCP socket release cb flags */ #define MPTCP_PUSH_PENDING 1 @@ -810,12 +809,9 @@ static inline bool mptcp_data_fin_enabled(const struct mptcp_sock *msk) static inline void mptcp_write_space(struct sock *sk) { - if (sk_stream_is_writeable(sk)) { - /* pairs with memory barrier in mptcp_poll */ - smp_mb(); - if (test_and_clear_bit(MPTCP_NOSPACE, &mptcp_sk(sk)->flags)) - sk_stream_write_space(sk); - } + /* pairs with memory barrier in mptcp_poll */ + smp_mb(); + sk_stream_write_space(sk); } static inline void __mptcp_sync_sndbuf(struct sock *sk) |