diff mbox series

[net-next,4/4] mptcp: unify pm set_flags interfaces

Message ID 20230608-upstream-net-next-20230608-mptcp-unify-pm-interfaces-v1-4-b301717c9ff5@tessares.net
State New
Headers
Series mptcp: unify PM interfaces |

Commit Message

Matthieu Baerts June 8, 2023, 1:20 p.m. UTC 
  From: Geliang Tang <geliang.tang@suse.com>

This patch unifies the three PM set_flags() interfaces:

mptcp_pm_nl_set_flags() in mptcp/pm_netlink.c for the in-kernel PM and
mptcp_userspace_pm_set_flags() in mptcp/pm_userspace.c for the
userspace PM.

They'll be switched in the common PM infterface mptcp_pm_set_flags() in
mptcp/pm.c based on whether token is NULL or not.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 net/mptcp/pm.c         |  9 +++++++
 net/mptcp/pm_netlink.c | 70 +++++++++++++++++++++++++++-----------------------
 net/mptcp/protocol.h   |  4 +++
 3 files changed, 51 insertions(+), 32 deletions(-)

Comments

Larysa Zaremba June 9, 2023, 1:35 p.m. UTC | #1 
On Thu, Jun 08, 2023 at 03:20:52PM +0200, Matthieu Baerts wrote:
> From: Geliang Tang <geliang.tang@suse.com>
> 
> This patch unifies the three PM set_flags() interfaces:
> 
> mptcp_pm_nl_set_flags() in mptcp/pm_netlink.c for the in-kernel PM and
> mptcp_userspace_pm_set_flags() in mptcp/pm_userspace.c for the
> userspace PM.
> 
> They'll be switched in the common PM infterface mptcp_pm_set_flags() in
> mptcp/pm.c based on whether token is NULL or not.
> 
> Signed-off-by: Geliang Tang <geliang.tang@suse.com>
> Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>

Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>

> ---
>  net/mptcp/pm.c         |  9 +++++++
>  net/mptcp/pm_netlink.c | 70 +++++++++++++++++++++++++++-----------------------
>  net/mptcp/protocol.h   |  4 +++
>  3 files changed, 51 insertions(+), 32 deletions(-)
> 
> diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
> index 2d04598dde05..36bf9196168b 100644
> --- a/net/mptcp/pm.c
> +++ b/net/mptcp/pm.c
> @@ -433,6 +433,15 @@ int mptcp_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int id
>  	return mptcp_pm_nl_get_flags_and_ifindex_by_id(msk, id, flags, ifindex);
>  }
>  
> +int mptcp_pm_set_flags(struct net *net, struct nlattr *token,
> +		       struct mptcp_pm_addr_entry *loc,
> +		       struct mptcp_pm_addr_entry *rem, u8 bkup)
> +{
> +	if (token)
> +		return mptcp_userspace_pm_set_flags(net, token, loc, rem, bkup);
> +	return mptcp_pm_nl_set_flags(net, loc, bkup);
> +}
> +
>  void mptcp_pm_subflow_chk_stale(const struct mptcp_sock *msk, struct sock *ssk)
>  {
>  	struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk);
> diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
> index e8b32d369f11..13be9205d36d 100644
> --- a/net/mptcp/pm_netlink.c
> +++ b/net/mptcp/pm_netlink.c
> @@ -1864,18 +1864,50 @@ static int mptcp_nl_set_flags(struct net *net,
>  	return ret;
>  }
>  
> +int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup)
> +{
> +	struct pm_nl_pernet *pernet = pm_nl_get_pernet(net);
> +	u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP |
> +			   MPTCP_PM_ADDR_FLAG_FULLMESH;
> +	struct mptcp_pm_addr_entry *entry;
> +	u8 lookup_by_id = 0;
> +
> +	if (addr->addr.family == AF_UNSPEC) {
> +		lookup_by_id = 1;
> +		if (!addr->addr.id)
> +			return -EOPNOTSUPP;
> +	}
> +
> +	spin_lock_bh(&pernet->lock);
> +	entry = __lookup_addr(pernet, &addr->addr, lookup_by_id);
> +	if (!entry) {
> +		spin_unlock_bh(&pernet->lock);
> +		return -EINVAL;
> +	}
> +	if ((addr->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) &&
> +	    (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) {
> +		spin_unlock_bh(&pernet->lock);
> +		return -EINVAL;
> +	}
> +
> +	changed = (addr->flags ^ entry->flags) & mask;
> +	entry->flags = (entry->flags & ~mask) | (addr->flags & mask);
> +	*addr = *entry;
> +	spin_unlock_bh(&pernet->lock);
> +
> +	mptcp_nl_set_flags(net, &addr->addr, bkup, changed);
> +	return 0;
> +}
> +
>  static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info)
>  {
> -	struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, }, *entry;
>  	struct mptcp_pm_addr_entry remote = { .addr = { .family = AF_UNSPEC }, };
> +	struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, };
>  	struct nlattr *attr_rem = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE];
>  	struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN];
>  	struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR];
> -	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
> -	u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP |
> -			   MPTCP_PM_ADDR_FLAG_FULLMESH;
>  	struct net *net = sock_net(skb->sk);
> -	u8 bkup = 0, lookup_by_id = 0;
> +	u8 bkup = 0;
>  	int ret;
>  
>  	ret = mptcp_pm_parse_entry(attr, info, false, &addr);
> @@ -1890,34 +1922,8 @@ static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info)
>  
>  	if (addr.flags & MPTCP_PM_ADDR_FLAG_BACKUP)
>  		bkup = 1;
> -	if (addr.addr.family == AF_UNSPEC) {
> -		lookup_by_id = 1;
> -		if (!addr.addr.id)
> -			return -EOPNOTSUPP;
> -	}
>  
> -	if (token)
> -		return mptcp_userspace_pm_set_flags(net, token, &addr, &remote, bkup);
> -
> -	spin_lock_bh(&pernet->lock);
> -	entry = __lookup_addr(pernet, &addr.addr, lookup_by_id);
> -	if (!entry) {
> -		spin_unlock_bh(&pernet->lock);
> -		return -EINVAL;
> -	}
> -	if ((addr.flags & MPTCP_PM_ADDR_FLAG_FULLMESH) &&
> -	    (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) {
> -		spin_unlock_bh(&pernet->lock);
> -		return -EINVAL;
> -	}
> -
> -	changed = (addr.flags ^ entry->flags) & mask;
> -	entry->flags = (entry->flags & ~mask) | (addr.flags & mask);
> -	addr = *entry;
> -	spin_unlock_bh(&pernet->lock);
> -
> -	mptcp_nl_set_flags(net, &addr.addr, bkup, changed);
> -	return 0;
> +	return mptcp_pm_set_flags(net, token, &addr, &remote, bkup);
>  }
>  
>  static void mptcp_nl_mcast_send(struct net *net, struct sk_buff *nlskb, gfp_t gfp)
> diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
> index 607cbd2ccb98..1e7465bb66d5 100644
> --- a/net/mptcp/protocol.h
> +++ b/net/mptcp/protocol.h
> @@ -827,6 +827,10 @@ int mptcp_pm_nl_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int
>  int mptcp_userspace_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk,
>  						   unsigned int id,
>  						   u8 *flags, int *ifindex);
> +int mptcp_pm_set_flags(struct net *net, struct nlattr *token,
> +		       struct mptcp_pm_addr_entry *loc,
> +		       struct mptcp_pm_addr_entry *rem, u8 bkup);
> +int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup);
>  int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
>  				 struct mptcp_pm_addr_entry *loc,
>  				 struct mptcp_pm_addr_entry *rem, u8 bkup);
> 
> -- 
> 2.40.1
> 
>
diff mbox series

Patch

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 2d04598dde05..36bf9196168b 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -433,6 +433,15 @@  int mptcp_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int id
 	return mptcp_pm_nl_get_flags_and_ifindex_by_id(msk, id, flags, ifindex);
 }
 
+int mptcp_pm_set_flags(struct net *net, struct nlattr *token,
+		       struct mptcp_pm_addr_entry *loc,
+		       struct mptcp_pm_addr_entry *rem, u8 bkup)
+{
+	if (token)
+		return mptcp_userspace_pm_set_flags(net, token, loc, rem, bkup);
+	return mptcp_pm_nl_set_flags(net, loc, bkup);
+}
+
 void mptcp_pm_subflow_chk_stale(const struct mptcp_sock *msk, struct sock *ssk)
 {
 	struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk);
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index e8b32d369f11..13be9205d36d 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1864,18 +1864,50 @@  static int mptcp_nl_set_flags(struct net *net,
 	return ret;
 }
 
+int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup)
+{
+	struct pm_nl_pernet *pernet = pm_nl_get_pernet(net);
+	u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP |
+			   MPTCP_PM_ADDR_FLAG_FULLMESH;
+	struct mptcp_pm_addr_entry *entry;
+	u8 lookup_by_id = 0;
+
+	if (addr->addr.family == AF_UNSPEC) {
+		lookup_by_id = 1;
+		if (!addr->addr.id)
+			return -EOPNOTSUPP;
+	}
+
+	spin_lock_bh(&pernet->lock);
+	entry = __lookup_addr(pernet, &addr->addr, lookup_by_id);
+	if (!entry) {
+		spin_unlock_bh(&pernet->lock);
+		return -EINVAL;
+	}
+	if ((addr->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) &&
+	    (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) {
+		spin_unlock_bh(&pernet->lock);
+		return -EINVAL;
+	}
+
+	changed = (addr->flags ^ entry->flags) & mask;
+	entry->flags = (entry->flags & ~mask) | (addr->flags & mask);
+	*addr = *entry;
+	spin_unlock_bh(&pernet->lock);
+
+	mptcp_nl_set_flags(net, &addr->addr, bkup, changed);
+	return 0;
+}
+
 static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info)
 {
-	struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, }, *entry;
 	struct mptcp_pm_addr_entry remote = { .addr = { .family = AF_UNSPEC }, };
+	struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, };
 	struct nlattr *attr_rem = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE];
 	struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN];
 	struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR];
-	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
-	u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP |
-			   MPTCP_PM_ADDR_FLAG_FULLMESH;
 	struct net *net = sock_net(skb->sk);
-	u8 bkup = 0, lookup_by_id = 0;
+	u8 bkup = 0;
 	int ret;
 
 	ret = mptcp_pm_parse_entry(attr, info, false, &addr);
@@ -1890,34 +1922,8 @@  static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info)
 
 	if (addr.flags & MPTCP_PM_ADDR_FLAG_BACKUP)
 		bkup = 1;
-	if (addr.addr.family == AF_UNSPEC) {
-		lookup_by_id = 1;
-		if (!addr.addr.id)
-			return -EOPNOTSUPP;
-	}
 
-	if (token)
-		return mptcp_userspace_pm_set_flags(net, token, &addr, &remote, bkup);
-
-	spin_lock_bh(&pernet->lock);
-	entry = __lookup_addr(pernet, &addr.addr, lookup_by_id);
-	if (!entry) {
-		spin_unlock_bh(&pernet->lock);
-		return -EINVAL;
-	}
-	if ((addr.flags & MPTCP_PM_ADDR_FLAG_FULLMESH) &&
-	    (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) {
-		spin_unlock_bh(&pernet->lock);
-		return -EINVAL;
-	}
-
-	changed = (addr.flags ^ entry->flags) & mask;
-	entry->flags = (entry->flags & ~mask) | (addr.flags & mask);
-	addr = *entry;
-	spin_unlock_bh(&pernet->lock);
-
-	mptcp_nl_set_flags(net, &addr.addr, bkup, changed);
-	return 0;
+	return mptcp_pm_set_flags(net, token, &addr, &remote, bkup);
 }
 
 static void mptcp_nl_mcast_send(struct net *net, struct sk_buff *nlskb, gfp_t gfp)
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 607cbd2ccb98..1e7465bb66d5 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -827,6 +827,10 @@  int mptcp_pm_nl_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int
 int mptcp_userspace_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk,
 						   unsigned int id,
 						   u8 *flags, int *ifindex);
+int mptcp_pm_set_flags(struct net *net, struct nlattr *token,
+		       struct mptcp_pm_addr_entry *loc,
+		       struct mptcp_pm_addr_entry *rem, u8 bkup);
+int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup);
 int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
 				 struct mptcp_pm_addr_entry *loc,
 				 struct mptcp_pm_addr_entry *rem, u8 bkup);