diff mbox series

[mptcp-next,v9,04/12] mptcp: sysctl: map pm_type to path_manager

Message ID 8cc85a63af73b3460868905e15678926a01cebe3.1741171898.git.tanggeliang@kylinos.cn (mailing list archive)
State Superseded
Delegated to: Matthieu Baerts
Headers show
Series BPF path manager, part 5 | expand

Commit Message

Geliang Tang March 5, 2025, 10:59 a.m. UTC 
From: Geliang Tang <tanggeliang@kylinos.cn>

This patch adds a new proc_handler "proc_pm_type" for "pm_type" to
map old path manager sysctl "pm_type" to the newly added "path_manager".

	path_manager		   pm_type
	MPTCP_PM_TYPE_KERNEL    -> "kernel"
	MPTCP_PM_TYPE_USERSPACE -> "userspace"

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 net/mptcp/ctrl.c | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/mptcp/ctrl.c b/net/mptcp/ctrl.c
index fe06be11dc83..a158a337cdb5 100644
--- a/net/mptcp/ctrl.c
+++ b/net/mptcp/ctrl.c
@@ -226,6 +226,32 @@  static int proc_path_manager(const struct ctl_table *ctl, int write,
 	return ret;
 }
 
+static int proc_pm_type(const struct ctl_table *ctl, int write,
+			void *buffer, size_t *lenp, loff_t *ppos)
+{
+	struct mptcp_pernet *pernet = container_of(ctl->data,
+						   struct mptcp_pernet,
+						   pm_type);
+	u8 pm_type = READ_ONCE(*(u8 *)ctl->data);
+	const struct ctl_table tbl = {
+		.maxlen = sizeof(pm_type),
+		.data = &pm_type,
+	};
+	int ret;
+
+	ret = proc_dou8vec_minmax(&tbl, write, buffer, lenp, ppos);
+	if (write && ret == 0) {
+		char *path_manager = "kernel";
+
+		if (pm_type == MPTCP_PM_TYPE_USERSPACE)
+			path_manager = "userspace";
+		mptcp_set_path_manager(pernet->path_manager, path_manager);
+		WRITE_ONCE(*(u8 *)ctl->data, pm_type);
+	}
+
+	return ret;
+}
+
 static struct ctl_table mptcp_sysctl_table[] = {
 	{
 		.procname = "enabled",
@@ -270,7 +296,7 @@  static struct ctl_table mptcp_sysctl_table[] = {
 		.procname = "pm_type",
 		.maxlen = sizeof(u8),
 		.mode = 0644,
-		.proc_handler = proc_dou8vec_minmax,
+		.proc_handler = proc_pm_type,
 		.extra1       = SYSCTL_ZERO,
 		.extra2       = &mptcp_pm_type_max
 	},