From: Paolo Abeni pabeni@redhat.com
[ Upstream commit 75e908c33615999abe1f3a8429d25dea30d28e4e ]
There are a bunch of callsite where the ssk socket lock is acquired using the full-blown version eligible for the fast variant. Let's move to the latter.
Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Mat Martineau mathew.j.martineau@linux.intel.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/mptcp/pm_netlink.c | 10 ++++++---- net/mptcp/protocol.c | 15 +++++++++------ 2 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 3f5d90a20235..fce1d057d19e 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -540,6 +540,7 @@ void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk) subflow = list_first_entry_or_null(&msk->conn_list, typeof(*subflow), node); if (subflow) { struct sock *ssk = mptcp_subflow_tcp_sock(subflow); + bool slow;
spin_unlock_bh(&msk->pm.lock); pr_debug("send ack for %s%s%s", @@ -547,9 +548,9 @@ void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk) mptcp_pm_should_add_signal_ipv6(msk) ? " [ipv6]" : "", mptcp_pm_should_add_signal_port(msk) ? " [port]" : "");
- lock_sock(ssk); + slow = lock_sock_fast(ssk); tcp_send_ack(ssk); - release_sock(ssk); + unlock_sock_fast(ssk, slow); spin_lock_bh(&msk->pm.lock); } } @@ -566,6 +567,7 @@ int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk, struct sock *ssk = mptcp_subflow_tcp_sock(subflow); struct sock *sk = (struct sock *)msk; struct mptcp_addr_info local; + bool slow;
local_address((struct sock_common *)ssk, &local); if (!addresses_equal(&local, addr, addr->port)) @@ -578,9 +580,9 @@ int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,
spin_unlock_bh(&msk->pm.lock); pr_debug("send ack for mp_prio"); - lock_sock(ssk); + slow = lock_sock_fast(ssk); tcp_send_ack(ssk); - release_sock(ssk); + unlock_sock_fast(ssk, slow); spin_lock_bh(&msk->pm.lock);
return 0; diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 8ead550df8b1..0f36fefcc77e 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -424,23 +424,25 @@ static void mptcp_send_ack(struct mptcp_sock *msk)
mptcp_for_each_subflow(msk, subflow) { struct sock *ssk = mptcp_subflow_tcp_sock(subflow); + bool slow;
- lock_sock(ssk); + slow = lock_sock_fast(ssk); if (tcp_can_send_ack(ssk)) tcp_send_ack(ssk); - release_sock(ssk); + unlock_sock_fast(ssk, slow); } }
static bool mptcp_subflow_cleanup_rbuf(struct sock *ssk) { + bool slow; int ret;
- lock_sock(ssk); + slow = lock_sock_fast(ssk); ret = tcp_can_send_ack(ssk); if (ret) tcp_cleanup_rbuf(ssk, 1); - release_sock(ssk); + unlock_sock_fast(ssk, slow); return ret; }
@@ -2288,13 +2290,14 @@ static void mptcp_check_fastclose(struct mptcp_sock *msk)
list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) { struct sock *tcp_sk = mptcp_subflow_tcp_sock(subflow); + bool slow;
- lock_sock(tcp_sk); + slow = lock_sock_fast(tcp_sk); if (tcp_sk->sk_state != TCP_CLOSE) { tcp_send_active_reset(tcp_sk, GFP_ATOMIC); tcp_set_state(tcp_sk, TCP_CLOSE); } - release_sock(tcp_sk); + unlock_sock_fast(tcp_sk, slow); }
inet_sk_state_store(sk, TCP_CLOSE);