From: Paolo Abeni <pabeni@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Mat Martineau <mathew.j.martineau@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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);
--
2.30.2
