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-rw-r--r--net/mptcp/protocol.h21
1 files changed, 11 insertions, 10 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 3e50baba1b..7384613ea2 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -790,6 +790,16 @@ static inline bool mptcp_data_fin_enabled(const struct mptcp_sock *msk)
READ_ONCE(msk->write_seq) == READ_ONCE(msk->snd_nxt);
}
+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);
+ }
+}
+
static inline void __mptcp_sync_sndbuf(struct sock *sk)
{
struct mptcp_subflow_context *subflow;
@@ -808,6 +818,7 @@ static inline void __mptcp_sync_sndbuf(struct sock *sk)
/* the msk max wmem limit is <nr_subflows> * tcp wmem[2] */
WRITE_ONCE(sk->sk_sndbuf, new_sndbuf);
+ mptcp_write_space(sk);
}
/* The called held both the msk socket and the subflow socket locks,
@@ -838,16 +849,6 @@ static inline void mptcp_propagate_sndbuf(struct sock *sk, struct sock *ssk)
local_bh_enable();
}
-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);
- }
-}
-
void mptcp_destroy_common(struct mptcp_sock *msk, unsigned int flags);
#define MPTCP_TOKEN_MAX_RETRIES 4