diff mbox series

[mptcp-next,v3,6/6] mptcp: change is_backup interfaces as get_flags

Message ID 2c8cc97535d697aadc62d222f3af85f865efec30.1736935086.git.tanggeliang@kylinos.cn (mailing list archive)
State New
Headers show
Series BPF path manager, part 3 | expand

Checks

Context Check Description
matttbe/checkpatch success total: 0 errors, 0 warnings, 0 checks, 76 lines checked
matttbe/shellcheck success MPTCP selftests files have not been modified
matttbe/build success Build and static analysis OK
matttbe/KVM_Validation__normal success Success! ✅
matttbe/KVM_Validation__debug success Success! ✅
matttbe/KVM_Validation__btf-normal__only_bpftest_all_ success Success! ✅
matttbe/KVM_Validation__btf-debug__only_bpftest_all_ success Success! ✅

Commit Message

Geliang Tang Jan. 15, 2025, 9:59 a.m. UTC 
From: Geliang Tang <tanggeliang@kylinos.cn>

is_backup() interface of the path managers is not very common. A more
common approach is to add a get_flags() interface to obtain the flags
value of a given address. Then is_backup() can be implemented through
get_flags() by test whether backup flag is set in the flags value.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 net/mptcp/pm.c           |  7 +++++--
 net/mptcp/pm_netlink.c   |  9 +++++----
 net/mptcp/pm_userspace.c | 10 +++++-----
 net/mptcp/protocol.h     |  6 ++++--
 4 files changed, 19 insertions(+), 13 deletions(-)
diff mbox series

Patch

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 16cacce6c10f..e275be73b963 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -425,13 +425,16 @@  int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc)
 bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc)
 {
 	struct mptcp_addr_info skc_local;
+	u8 flags;
 
 	mptcp_local_address((struct sock_common *)skc, &skc_local);
 
 	if (mptcp_pm_is_userspace(msk))
-		return mptcp_userspace_pm_is_backup(msk, &skc_local);
+		flags = mptcp_userspace_pm_get_flags(msk, &skc_local);
+	else
+		flags = mptcp_pm_nl_get_flags(msk, &skc_local);
 
-	return mptcp_pm_nl_is_backup(msk, &skc_local);
+	return !!(flags & MPTCP_PM_ADDR_FLAG_BACKUP);
 }
 
 static int mptcp_pm_get_addr(u8 id, struct mptcp_pm_addr_entry *addr,
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index afd517ff260c..e7febe3f00ae 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1172,18 +1172,19 @@  int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc
 	return ret;
 }
 
-bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc)
+u8 mptcp_pm_nl_get_flags(struct mptcp_sock *msk,
+			 struct mptcp_addr_info *skc)
 {
 	struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk);
 	struct mptcp_pm_addr_entry *entry;
-	bool backup;
+	u8 flags;
 
 	rcu_read_lock();
 	entry = __lookup_addr(pernet, skc);
-	backup = entry && !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
+	flags = entry ? entry->flags : 0;
 	rcu_read_unlock();
 
-	return backup;
+	return flags;
 }
 
 #define MPTCP_PM_CMD_GRP_OFFSET       0
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c
index eda4277bfff4..1713e9bb6945 100644
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -154,18 +154,18 @@  int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk,
 	return mptcp_userspace_pm_append_new_local_addr(msk, &new_entry, true);
 }
 
-bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk,
-				  struct mptcp_addr_info *skc)
+u8 mptcp_userspace_pm_get_flags(struct mptcp_sock *msk,
+				struct mptcp_addr_info *skc)
 {
 	struct mptcp_pm_addr_entry *entry;
-	bool backup;
+	u8 flags;
 
 	spin_lock_bh(&msk->pm.lock);
 	entry = mptcp_userspace_pm_lookup_addr(msk, skc);
-	backup = entry && !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
+	flags = entry ? entry->flags : 0;
 	spin_unlock_bh(&msk->pm.lock);
 
-	return backup;
+	return flags;
 }
 
 static struct mptcp_sock *mptcp_userspace_pm_get_sock(const struct genl_info *info)
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index aca3de2baf81..e8d8236a40e1 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -1132,8 +1132,10 @@  int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
 int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
 int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
 bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc);
-bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
-bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
+u8 mptcp_pm_nl_get_flags(struct mptcp_sock *msk,
+			 struct mptcp_addr_info *skc);
+u8 mptcp_userspace_pm_get_flags(struct mptcp_sock *msk,
+				struct mptcp_addr_info *skc);
 int mptcp_pm_nl_dump_addr(struct sk_buff *msg,
 			  struct netlink_callback *cb);
 int mptcp_userspace_pm_dump_addr(struct sk_buff *msg,