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From: Mat Martineau <mathew.j.martineau at linux.intel.com>
To: mptcp at lists.01.org
Subject: [MPTCP] [PATCH net-next 09/11] mptcp: drop rm_addr_signal flag
Date: Wed, 09 Dec 2020 15:51:26 -0800	[thread overview]
Message-ID: <20201209235128.175473-10-mathew.j.martineau@linux.intel.com> (raw)
In-Reply-To: 20201209235128.175473-1-mathew.j.martineau@linux.intel.com

[-- Attachment #1: Type: text/plain, Size: 3034 bytes --]

From: Geliang Tang <geliangtang(a)gmail.com>

This patch reused add_addr_signal for the RM_ADDR announcing signal, by
defining a new ADD_ADDR status named MPTCP_RM_ADDR_SIGNAL. Then the flag
rm_addr_signal in PM could be dropped.

Signed-off-by: Geliang Tang <geliangtang(a)gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau(a)linux.intel.com>
---
 net/mptcp/pm.c       | 18 +++++++++++++++---
 net/mptcp/protocol.h |  4 ++--
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index ac590274b048..b5a0b8d231c6 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -20,6 +20,11 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk,
 
 	pr_debug("msk=%p, local_id=%d", msk, addr->id);
 
+	if (add_addr) {
+		pr_warn("addr_signal error, add_addr=%d", add_addr);
+		return -EINVAL;
+	}
+
 	msk->pm.local = *addr;
 	add_addr |= BIT(MPTCP_ADD_ADDR_SIGNAL);
 	if (echo)
@@ -34,10 +39,18 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk,
 
 int mptcp_pm_remove_addr(struct mptcp_sock *msk, u8 local_id)
 {
+	u8 rm_addr = READ_ONCE(msk->pm.add_addr_signal);
+
 	pr_debug("msk=%p, local_id=%d", msk, local_id);
 
+	if (rm_addr) {
+		pr_warn("addr_signal error, rm_addr=%d", rm_addr);
+		return -EINVAL;
+	}
+
 	msk->pm.rm_id = local_id;
-	WRITE_ONCE(msk->pm.rm_addr_signal, true);
+	rm_addr |= BIT(MPTCP_RM_ADDR_SIGNAL);
+	WRITE_ONCE(msk->pm.add_addr_signal, rm_addr);
 	return 0;
 }
 
@@ -237,7 +250,7 @@ bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
 		goto out_unlock;
 
 	*rm_id = msk->pm.rm_id;
-	WRITE_ONCE(msk->pm.rm_addr_signal, false);
+	WRITE_ONCE(msk->pm.add_addr_signal, 0);
 	ret = true;
 
 out_unlock:
@@ -259,7 +272,6 @@ void mptcp_pm_data_init(struct mptcp_sock *msk)
 	msk->pm.rm_id = 0;
 	WRITE_ONCE(msk->pm.work_pending, false);
 	WRITE_ONCE(msk->pm.add_addr_signal, 0);
-	WRITE_ONCE(msk->pm.rm_addr_signal, false);
 	WRITE_ONCE(msk->pm.accept_addr, false);
 	WRITE_ONCE(msk->pm.accept_subflow, false);
 	msk->pm.status = 0;
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index cda84b892182..4dbb75b8ee33 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -174,6 +174,7 @@ enum mptcp_add_addr_status {
 	MPTCP_ADD_ADDR_ECHO,
 	MPTCP_ADD_ADDR_IPV6,
 	MPTCP_ADD_ADDR_PORT,
+	MPTCP_RM_ADDR_SIGNAL,
 };
 
 struct mptcp_pm_data {
@@ -184,7 +185,6 @@ struct mptcp_pm_data {
 	spinlock_t	lock;		/*protects the whole PM data */
 
 	u8		add_addr_signal;
-	bool		rm_addr_signal;
 	bool		server_side;
 	bool		work_pending;
 	bool		accept_addr;
@@ -579,7 +579,7 @@ static inline bool mptcp_pm_should_add_signal_port(struct mptcp_sock *msk)
 
 static inline bool mptcp_pm_should_rm_signal(struct mptcp_sock *msk)
 {
-	return READ_ONCE(msk->pm.rm_addr_signal);
+	return READ_ONCE(msk->pm.add_addr_signal) & BIT(MPTCP_RM_ADDR_SIGNAL);
 }
 
 static inline unsigned int mptcp_add_addr_len(int family, bool echo, bool port)
-- 
2.29.2

WARNING: multiple messages have this Message-ID (diff)
From: Mat Martineau <mathew.j.martineau@linux.intel.com>
To: netdev@vger.kernel.org
Cc: Geliang Tang <geliangtang@gmail.com>,
	davem@davemloft.net, kuba@kernel.org, mptcp@lists.01.org,
	Mat Martineau <mathew.j.martineau@linux.intel.com>
Subject: [PATCH net-next 09/11] mptcp: drop rm_addr_signal flag
Date: Wed,  9 Dec 2020 15:51:26 -0800	[thread overview]
Message-ID: <20201209235128.175473-10-mathew.j.martineau@linux.intel.com> (raw)
In-Reply-To: <20201209235128.175473-1-mathew.j.martineau@linux.intel.com>

From: Geliang Tang <geliangtang@gmail.com>

This patch reused add_addr_signal for the RM_ADDR announcing signal, by
defining a new ADD_ADDR status named MPTCP_RM_ADDR_SIGNAL. Then the flag
rm_addr_signal in PM could be dropped.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
---
 net/mptcp/pm.c       | 18 +++++++++++++++---
 net/mptcp/protocol.h |  4 ++--
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index ac590274b048..b5a0b8d231c6 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -20,6 +20,11 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk,
 
 	pr_debug("msk=%p, local_id=%d", msk, addr->id);
 
+	if (add_addr) {
+		pr_warn("addr_signal error, add_addr=%d", add_addr);
+		return -EINVAL;
+	}
+
 	msk->pm.local = *addr;
 	add_addr |= BIT(MPTCP_ADD_ADDR_SIGNAL);
 	if (echo)
@@ -34,10 +39,18 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk,
 
 int mptcp_pm_remove_addr(struct mptcp_sock *msk, u8 local_id)
 {
+	u8 rm_addr = READ_ONCE(msk->pm.add_addr_signal);
+
 	pr_debug("msk=%p, local_id=%d", msk, local_id);
 
+	if (rm_addr) {
+		pr_warn("addr_signal error, rm_addr=%d", rm_addr);
+		return -EINVAL;
+	}
+
 	msk->pm.rm_id = local_id;
-	WRITE_ONCE(msk->pm.rm_addr_signal, true);
+	rm_addr |= BIT(MPTCP_RM_ADDR_SIGNAL);
+	WRITE_ONCE(msk->pm.add_addr_signal, rm_addr);
 	return 0;
 }
 
@@ -237,7 +250,7 @@ bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
 		goto out_unlock;
 
 	*rm_id = msk->pm.rm_id;
-	WRITE_ONCE(msk->pm.rm_addr_signal, false);
+	WRITE_ONCE(msk->pm.add_addr_signal, 0);
 	ret = true;
 
 out_unlock:
@@ -259,7 +272,6 @@ void mptcp_pm_data_init(struct mptcp_sock *msk)
 	msk->pm.rm_id = 0;
 	WRITE_ONCE(msk->pm.work_pending, false);
 	WRITE_ONCE(msk->pm.add_addr_signal, 0);
-	WRITE_ONCE(msk->pm.rm_addr_signal, false);
 	WRITE_ONCE(msk->pm.accept_addr, false);
 	WRITE_ONCE(msk->pm.accept_subflow, false);
 	msk->pm.status = 0;
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index cda84b892182..4dbb75b8ee33 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -174,6 +174,7 @@ enum mptcp_add_addr_status {
 	MPTCP_ADD_ADDR_ECHO,
 	MPTCP_ADD_ADDR_IPV6,
 	MPTCP_ADD_ADDR_PORT,
+	MPTCP_RM_ADDR_SIGNAL,
 };
 
 struct mptcp_pm_data {
@@ -184,7 +185,6 @@ struct mptcp_pm_data {
 	spinlock_t	lock;		/*protects the whole PM data */
 
 	u8		add_addr_signal;
-	bool		rm_addr_signal;
 	bool		server_side;
 	bool		work_pending;
 	bool		accept_addr;
@@ -579,7 +579,7 @@ static inline bool mptcp_pm_should_add_signal_port(struct mptcp_sock *msk)
 
 static inline bool mptcp_pm_should_rm_signal(struct mptcp_sock *msk)
 {
-	return READ_ONCE(msk->pm.rm_addr_signal);
+	return READ_ONCE(msk->pm.add_addr_signal) & BIT(MPTCP_RM_ADDR_SIGNAL);
 }
 
 static inline unsigned int mptcp_add_addr_len(int family, bool echo, bool port)
-- 
2.29.2


             reply	other threads:[~2020-12-09 23:51 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09 23:51 Mat Martineau [this message]
2020-12-09 23:51 ` [PATCH net-next 09/11] mptcp: drop rm_addr_signal flag Mat Martineau
  -- strict thread matches above, loose matches on Subject: below --
2020-12-10  3:04 [MPTCP] Re: [PATCH net-next 00/11] mptcp: Add port parameter to ADD_ADDR option David Miller
2020-12-10  3:04 ` David Miller
2020-12-09 23:51 [MPTCP] [PATCH net-next 11/11] mptcp: use the variable sk instead of open-coding Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 10/11] mptcp: rename add_addr_signal and mptcp_add_addr_status Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 08/11] mptcp: print out port and ahmac when receiving ADD_ADDR Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 07/11] mptcp: add port parameter for mptcp_pm_announce_addr Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 06/11] mptcp: send out dedicated packet for ADD_ADDR using port Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 05/11] mptcp: add the outgoing ADD_ADDR port support Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 04/11] mptcp: use adding up size to get ADD_ADDR length Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 03/11] mptcp: add port support for ADD_ADDR suboption writing Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 02/11] mptcp: unify ADD_ADDR and ADD_ADDR6 suboptions writing Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 01/11] mptcp: unify ADD_ADDR and echo " Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 00/11] mptcp: Add port parameter to ADD_ADDR option Mat Martineau
2020-12-09 23:51 ` Mat Martineau

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