[PATCH 5.17 0461/1126] net: dsa: Move VLAN filtering syncing out of dsa_switch_bridge_leave

Greg Kroah-Hartman
2022-04-05T08:07:57Z

From: Tobias Waldekranz <tobias@waldekranz.com>

[ Upstream commit 381a730182f1d174e1950cd4e63e885b1c302051 ]

Most of dsa_switch_bridge_leave was, in fact, dealing with the syncing
of VLAN filtering for switches on which that is a global
setting. Separate the two phases to prepare for the cross-chip related
bugfix in the following commit.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/dsa/switch.c | 38 +++++++++++++++++++++++++-------------
1 file changed, 25 insertions(+), 13 deletions(-)

diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index e3c7d2627a61..9f9b70d6070a 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -113,26 +113,15 @@ static int dsa_switch_bridge_join(struct dsa_switch *ds,
return dsa_tag_8021q_bridge_join(ds, info);
}

-static int dsa_switch_bridge_leave(struct dsa_switch *ds,
- struct dsa_notifier_bridge_info *info)
+static int dsa_switch_sync_vlan_filtering(struct dsa_switch *ds,
+ struct dsa_notifier_bridge_info *info)
{
- struct dsa_switch_tree *dst = ds->dst;
struct netlink_ext_ack extack = {0};
bool change_vlan_filtering = false;
bool vlan_filtering;
struct dsa_port *dp;
int err;

- if (dst->index == info->tree_index && ds->index == info->sw_index &&
- ds->ops->port_bridge_leave)
- ds->ops->port_bridge_leave(ds, info->port, info->bridge);
-
- if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
- ds->ops->crosschip_bridge_leave)
- ds->ops->crosschip_bridge_leave(ds, info->tree_index,
- info->sw_index, info->port,
- info->bridge);
-
if (ds->needs_standalone_vlan_filtering &&
!br_vlan_enabled(info->bridge.dev)) {
change_vlan_filtering = true;
@@ -172,6 +161,29 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds,
return err;
}

+ return 0;
+}
+
+static int dsa_switch_bridge_leave(struct dsa_switch *ds,
+ struct dsa_notifier_bridge_info *info)
+{
+ struct dsa_switch_tree *dst = ds->dst;
+ int err;
+
+ if (dst->index == info->tree_index && ds->index == info->sw_index &&
+ ds->ops->port_bridge_leave)
+ ds->ops->port_bridge_leave(ds, info->port, info->bridge);
+
+ if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
+ ds->ops->crosschip_bridge_leave)
+ ds->ops->crosschip_bridge_leave(ds, info->tree_index,
+ info->sw_index, info->port,
+ info->bridge);
+
+ err = dsa_switch_sync_vlan_filtering(ds, info);
+ if (err)
+ return err;
+
return dsa_tag_8021q_bridge_leave(ds, info);
}

--
2.34.1