[net-next,1/8] mptcp: move pm netlink work into pm_netlink

Commit Message

Mat Martineau Feb. 12, 2021, 11:59 p.m. UTC

From: Florian Westphal <[e-mail]>

Allows to make some functions static and avoids acquire of the pm
spinlock in protocol.c.

Signed-off-by: Florian Westphal <[e-mail]>
Signed-off-by: Mat Martineau <[e-mail]>
---
 net/mptcp/pm_netlink.c | 45 +++++++++++++++++++++++++++++++++++++-----
 net/mptcp/protocol.c   | 33 +------------------------------
 net/mptcp/protocol.h   |  6 +-----
 3 files changed, 42 insertions(+), 42 deletions(-)

Patch

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 23780a13b934..8f2fd6874d85 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -56,6 +56,8 @@  struct pm_nl_pernet {
 #define MPTCP_PM_ADDR_MAX	8
 #define ADD_ADDR_RETRANS_MAX	3
 
+static void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk);
+
 static bool addresses_equal(const struct mptcp_addr_info *a,
 			    struct mptcp_addr_info *b, bool use_port)
 {
@@ -448,17 +450,17 @@  static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk)
 	}
 }
 
-void mptcp_pm_nl_fully_established(struct mptcp_sock *msk)
+static void mptcp_pm_nl_fully_established(struct mptcp_sock *msk)
 {
 	mptcp_pm_create_subflow_or_signal_addr(msk);
 }
 
-void mptcp_pm_nl_subflow_established(struct mptcp_sock *msk)
+static void mptcp_pm_nl_subflow_established(struct mptcp_sock *msk)
 {
 	mptcp_pm_create_subflow_or_signal_addr(msk);
 }
 
-void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
+static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
 {
 	struct sock *sk = (struct sock *)msk;
 	unsigned int add_addr_accept_max;
@@ -498,7 +500,7 @@  void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
 	mptcp_pm_nl_add_addr_send_ack(msk);
 }
 
-void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
+static void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
 {
 	struct mptcp_subflow_context *subflow;
 
@@ -568,7 +570,7 @@  int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,
 	return -EINVAL;
 }
 
-void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
+static void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
 {
 	struct mptcp_subflow_context *subflow, *tmp;
 	struct sock *sk = (struct sock *)msk;
@@ -605,6 +607,39 @@  void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
 	}
 }
 
+void mptcp_pm_nl_work(struct mptcp_sock *msk)
+{
+	struct mptcp_pm_data *pm = &msk->pm;
+
+	msk_owned_by_me(msk);
+
+	spin_lock_bh(&msk->pm.lock);
+
+	pr_debug("msk=%p status=%x", msk, pm->status);
+	if (pm->status & BIT(MPTCP_PM_ADD_ADDR_RECEIVED)) {
+		pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_RECEIVED);
+		mptcp_pm_nl_add_addr_received(msk);
+	}
+	if (pm->status & BIT(MPTCP_PM_ADD_ADDR_SEND_ACK)) {
+		pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_SEND_ACK);
+		mptcp_pm_nl_add_addr_send_ack(msk);
+	}
+	if (pm->status & BIT(MPTCP_PM_RM_ADDR_RECEIVED)) {
+		pm->status &= ~BIT(MPTCP_PM_RM_ADDR_RECEIVED);
+		mptcp_pm_nl_rm_addr_received(msk);
+	}
+	if (pm->status & BIT(MPTCP_PM_ESTABLISHED)) {
+		pm->status &= ~BIT(MPTCP_PM_ESTABLISHED);
+		mptcp_pm_nl_fully_established(msk);
+	}
+	if (pm->status & BIT(MPTCP_PM_SUBFLOW_ESTABLISHED)) {
+		pm->status &= ~BIT(MPTCP_PM_SUBFLOW_ESTABLISHED);
+		mptcp_pm_nl_subflow_established(msk);
+	}
+
+	spin_unlock_bh(&msk->pm.lock);
+}
+
 void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id)
 {
 	struct mptcp_subflow_context *subflow, *tmp;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index b9f16a1535d2..93134b72490a 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -2152,37 +2152,6 @@  static unsigned int mptcp_sync_mss(struct sock *sk, u32 pmtu)
 	return 0;
 }
 
-static void pm_work(struct mptcp_sock *msk)
-{
-	struct mptcp_pm_data *pm = &msk->pm;
-
-	spin_lock_bh(&msk->pm.lock);
-
-	pr_debug("msk=%p status=%x", msk, pm->status);
-	if (pm->status & BIT(MPTCP_PM_ADD_ADDR_RECEIVED)) {
-		pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_RECEIVED);
-		mptcp_pm_nl_add_addr_received(msk);
-	}
-	if (pm->status & BIT(MPTCP_PM_ADD_ADDR_SEND_ACK)) {
-		pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_SEND_ACK);
-		mptcp_pm_nl_add_addr_send_ack(msk);
-	}
-	if (pm->status & BIT(MPTCP_PM_RM_ADDR_RECEIVED)) {
-		pm->status &= ~BIT(MPTCP_PM_RM_ADDR_RECEIVED);
-		mptcp_pm_nl_rm_addr_received(msk);
-	}
-	if (pm->status & BIT(MPTCP_PM_ESTABLISHED)) {
-		pm->status &= ~BIT(MPTCP_PM_ESTABLISHED);
-		mptcp_pm_nl_fully_established(msk);
-	}
-	if (pm->status & BIT(MPTCP_PM_SUBFLOW_ESTABLISHED)) {
-		pm->status &= ~BIT(MPTCP_PM_SUBFLOW_ESTABLISHED);
-		mptcp_pm_nl_subflow_established(msk);
-	}
-
-	spin_unlock_bh(&msk->pm.lock);
-}
-
 static void __mptcp_close_subflow(struct mptcp_sock *msk)
 {
 	struct mptcp_subflow_context *subflow, *tmp;
@@ -2271,7 +2240,7 @@  static void mptcp_worker(struct work_struct *work)
 		__mptcp_close_subflow(msk);
 
 	if (msk->pm.status)
-		pm_work(msk);
+		mptcp_pm_nl_work(msk);
 
 	if (test_and_clear_bit(MPTCP_WORK_EOF, &msk->flags))
 		mptcp_check_for_eof(msk);
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 73a923d02aad..702dbfefa093 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -713,11 +713,7 @@  int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
 
 void __init mptcp_pm_nl_init(void);
 void mptcp_pm_nl_data_init(struct mptcp_sock *msk);
-void mptcp_pm_nl_fully_established(struct mptcp_sock *msk);
-void mptcp_pm_nl_subflow_established(struct mptcp_sock *msk);
-void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk);
-void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk);
-void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk);
+void mptcp_pm_nl_work(struct mptcp_sock *msk);
 void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id);
 int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
 unsigned int mptcp_pm_get_add_addr_signal_max(struct mptcp_sock *msk);