Openwrt/target/linux/generic/backport-5.10/773-v5.12-net-dsa-move-switchdev-event-implementation-under-th.patch
Hauke Mehrtens 2e17c71095 kernel: Backport patch to automatically bring up DSA master when opening user port
Without this patch we have to manually bring up the CPU interface in
failsafe mode.

This was backported from kernel 5.12.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Tested-by: Rafał Miłecki <rafal@milecki.pl>
2021-06-22 23:23:00 +02:00

86 lines
2.5 KiB
Diff

From 447d290a58bd335d68f665713842365d3d6447df Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Wed, 6 Jan 2021 11:51:33 +0200
Subject: [PATCH] net: dsa: move switchdev event implementation under the same
switch/case statement
We'll need to start listening to SWITCHDEV_FDB_{ADD,DEL}_TO_DEVICE
events even for interfaces where dsa_slave_dev_check returns false, so
we need that check inside the switch-case statement for SWITCHDEV_FDB_*.
This movement also avoids a useless allocation / free of switchdev_work
on the untreated "default event" case.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
net/dsa/slave.c | 35 ++++++++++++++++-------------------
1 file changed, 16 insertions(+), 19 deletions(-)
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2161,31 +2161,29 @@ static int dsa_slave_switchdev_event(str
struct dsa_port *dp;
int err;
- if (event == SWITCHDEV_PORT_ATTR_SET) {
+ switch (event) {
+ case SWITCHDEV_PORT_ATTR_SET:
err = switchdev_handle_port_attr_set(dev, ptr,
dsa_slave_dev_check,
dsa_slave_port_attr_set);
return notifier_from_errno(err);
- }
-
- if (!dsa_slave_dev_check(dev))
- return NOTIFY_DONE;
+ case SWITCHDEV_FDB_ADD_TO_DEVICE:
+ case SWITCHDEV_FDB_DEL_TO_DEVICE:
+ if (!dsa_slave_dev_check(dev))
+ return NOTIFY_DONE;
- dp = dsa_slave_to_port(dev);
+ dp = dsa_slave_to_port(dev);
- switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
- if (!switchdev_work)
- return NOTIFY_BAD;
-
- INIT_WORK(&switchdev_work->work,
- dsa_slave_switchdev_event_work);
- switchdev_work->ds = dp->ds;
- switchdev_work->port = dp->index;
- switchdev_work->event = event;
+ switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
+ if (!switchdev_work)
+ return NOTIFY_BAD;
+
+ INIT_WORK(&switchdev_work->work,
+ dsa_slave_switchdev_event_work);
+ switchdev_work->ds = dp->ds;
+ switchdev_work->port = dp->index;
+ switchdev_work->event = event;
- switch (event) {
- case SWITCHDEV_FDB_ADD_TO_DEVICE:
- case SWITCHDEV_FDB_DEL_TO_DEVICE:
fdb_info = ptr;
if (!fdb_info->added_by_user) {
@@ -2198,13 +2196,12 @@ static int dsa_slave_switchdev_event(str
switchdev_work->vid = fdb_info->vid;
dev_hold(dev);
+ dsa_schedule_work(&switchdev_work->work);
break;
default:
- kfree(switchdev_work);
return NOTIFY_DONE;
}
- dsa_schedule_work(&switchdev_work->work);
return NOTIFY_OK;
}