diff options
| author | Florian Westphal <fw@strlen.de> | 2020-02-26 10:14:46 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-02-26 20:46:26 -0800 |
| commit | 101f6f851ee6268a46e2dcec244a812fd9a9195a (patch) | |
| tree | 2938e591ee284f9e18dd9d7d194fe39921249c98 | |
| parent | 5cd129dd5e45b9c3c61ec373c3ec1d60925dc65d (diff) | |
mptcp: add and use mptcp_data_ready helper
allows us to schedule the work queue to drain the ssk receive queue in
a followup patch.
This is needed to avoid sending all-to-pessimistic mptcp-level
acknowledgements. At this time, the ack_seq is what was last read by
userspace instead of the highest in-sequence number queued for reading.
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/mptcp/protocol.c | 8 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 1 | ||||
| -rw-r--r-- | net/mptcp/subflow.c | 14 |
3 files changed, 13 insertions, 10 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index e9aa6807b5be..1d55563e9aca 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -111,6 +111,14 @@ static struct sock *mptcp_subflow_get(const struct mptcp_sock *msk) return NULL; } +void mptcp_data_ready(struct sock *sk) +{ + struct mptcp_sock *msk = mptcp_sk(sk); + + set_bit(MPTCP_DATA_READY, &msk->flags); + sk->sk_data_ready(sk); +} + static bool mptcp_ext_cache_refill(struct mptcp_sock *msk) { if (!msk->cached_ext) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 9f8663b30456..67895a7c1e5b 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -201,6 +201,7 @@ void mptcp_get_options(const struct sk_buff *skb, struct tcp_options_received *opt_rx); void mptcp_finish_connect(struct sock *sk); +void mptcp_data_ready(struct sock *sk); int mptcp_token_new_request(struct request_sock *req); void mptcp_token_destroy_request(u32 token); diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 65122edf60aa..3dad662840aa 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -554,11 +554,8 @@ static void subflow_data_ready(struct sock *sk) return; } - if (mptcp_subflow_data_available(sk)) { - set_bit(MPTCP_DATA_READY, &mptcp_sk(parent)->flags); - - parent->sk_data_ready(parent); - } + if (mptcp_subflow_data_available(sk)) + mptcp_data_ready(parent); } static void subflow_write_space(struct sock *sk) @@ -690,11 +687,8 @@ static void subflow_state_change(struct sock *sk) * a fin packet carrying a DSS can be unnoticed if we don't trigger * the data available machinery here. */ - if (parent && subflow->mp_capable && mptcp_subflow_data_available(sk)) { - set_bit(MPTCP_DATA_READY, &mptcp_sk(parent)->flags); - - parent->sk_data_ready(parent); - } + if (parent && subflow->mp_capable && mptcp_subflow_data_available(sk)) + mptcp_data_ready(parent); if (parent && !(parent->sk_shutdown & RCV_SHUTDOWN) && !subflow->rx_eof && subflow_is_done(sk)) { |