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mptcp: sysctl: map pm_type to path_manager

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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"

It is important to add this to keep a compatibility with the now
deprecated pm_type sysctl knob.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250313-net-next-mptcp-pm-ops-intro-v1-10-f4e4a88efc50@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Geliang Tang 2025-03-13 11:20:59 +01:00 committed by Paolo Abeni
parent 573b653401
commit 7982ed0edd
1 changed files with 24 additions and 1 deletions
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25
net/mptcp/ctrl.c
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@ -230,6 +230,29 @@ 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);
int ret;
ret = proc_dou8vec_minmax(ctl, write, buffer, lenp, ppos);
if (write && ret == 0) {
u8 pm_type = READ_ONCE(*(u8 *)ctl->data);
char *pm_name = "";
if (pm_type == MPTCP_PM_TYPE_KERNEL)
pm_name = "kernel";
else if (pm_type == MPTCP_PM_TYPE_USERSPACE)
pm_name = "userspace";
mptcp_set_path_manager(pernet->path_manager, pm_name);
}
return ret;
}
static struct ctl_table mptcp_sysctl_table[] = {
{
.procname = "enabled",
@ -274,7 +297,7 @@ 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
},