diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2020-11-27 13:10:26 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-12-01 04:55:23 +0300 |
| commit | 7439d687b79cbbd971c6a170be9aefda4a564be4 (patch) | |
| tree | 0c3bf91c5429a40d22f78ec7aaa75e052370fd29 /net/mptcp/protocol.h | |
| parent | 724cfd2ee8aa12e933253bb7a8bccb743a6fa6ef (diff) | |
| download | linux-7439d687b79cbbd971c6a170be9aefda4a564be4.tar.xz | |
mptcp: avoid a few atomic ops in the rx path
Extending the data_lock scope in mptcp_incoming_option
we can use that to protect both snd_una and wnd_end.
In the typical case, we will have a single atomic op instead of 2
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/protocol.h')
| -rw-r--r-- | net/mptcp/protocol.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 97c1e5dcb3e2..3c07aafde10e 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -222,8 +222,8 @@ struct mptcp_sock { struct sock *last_snd; int snd_burst; int old_wspace; - atomic64_t snd_una; - atomic64_t wnd_end; + u64 snd_una; + u64 wnd_end; unsigned long timer_ival; u32 token; int rmem_pending; @@ -321,7 +321,7 @@ static inline struct mptcp_data_frag *mptcp_rtx_tail(const struct sock *sk) { struct mptcp_sock *msk = mptcp_sk(sk); - if (!before64(msk->snd_nxt, atomic64_read(&msk->snd_una))) + if (!before64(msk->snd_nxt, READ_ONCE(msk->snd_una))) return NULL; return list_last_entry(&msk->rtx_queue, struct mptcp_data_frag, list); @@ -495,7 +495,7 @@ void mptcp_rcv_space_init(struct mptcp_sock *msk, const struct sock *ssk); void mptcp_data_ready(struct sock *sk, struct sock *ssk); bool mptcp_finish_join(struct sock *sk); bool mptcp_schedule_work(struct sock *sk); -void mptcp_data_acked(struct sock *sk); +void __mptcp_data_acked(struct sock *sk); void mptcp_subflow_eof(struct sock *sk); bool mptcp_update_rcv_data_fin(struct mptcp_sock *msk, u64 data_fin_seq, bool use_64bit); void __mptcp_flush_join_list(struct mptcp_sock *msk); |