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Date: Sat, 9 Jan 2021 02:01:55 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Cc: Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
Kurt Kanzenbach <kurt@...utronix.de>,
Hauke Mehrtens <hauke@...ke-m.de>,
Woojung Huh <woojung.huh@...rochip.com>,
Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
Sean Wang <sean.wang@...iatek.com>,
Landen Chao <Landen.Chao@...iatek.com>,
Claudiu Manoil <claudiu.manoil@....com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Linus Walleij <linus.walleij@...aro.org>,
Vadym Kochan <vkochan@...vell.com>,
Taras Chornyi <tchornyi@...vell.com>,
Jiri Pirko <jiri@...dia.com>, Ido Schimmel <idosch@...dia.com>,
Grygorii Strashko <grygorii.strashko@...com>,
Ioana Ciornei <ioana.ciornei@....com>,
Ivan Vecera <ivecera@...hat.com>,
Petr Machata <petrm@...dia.com>
Subject: [PATCH v4 net-next 10/11] mlxsw: spectrum_switchdev: remove transactional logic for VLAN objects
From: Vladimir Oltean <vladimir.oltean@....com>
As of commit 457e20d65924 ("mlxsw: spectrum_switchdev: Avoid returning
errors in commit phase"), the mlxsw driver performs the VLAN object
offloading during the prepare phase. So conversion just seems to be a
matter of removing the code that was running in the commit phase.
Ido Schimmel explains that the reason why mlxsw_sp_span_respin is called
unconditionally is because the bridge driver will ignore -EOPNOTSUPP and
actually add the VLAN on the bridge device - see commit 9c86ce2c1ae3
("net: bridge: Notify about bridge VLANs") and commit ea4721751977
("mlxsw: spectrum_switchdev: Ignore bridge VLAN events"). Since the VLAN
was successfully added on the bridge device, mlxsw_sp_span_respin_work()
should be able to resolve the egress port for a packet that is mirrored
to a gre tap and passes through the bridge device. Therefore keep the
logic as it is.
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Acked-by: Linus Walleij <linus.walleij@...aro.org>
Acked-by: Jiri Pirko <jiri@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
---
Changes in v4:
Added one more paragraph to the commit message.
Changes in v3:
Restored the comment to its original state.
Changes in v2:
Rebased on top of VLAN ranges removal.
.../mellanox/mlxsw/spectrum_switchdev.c | 37 ++-----------------
1 file changed, 4 insertions(+), 33 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 409c206f813f..20c4f3c2cf23 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1196,7 +1196,6 @@ mlxsw_sp_br_ban_rif_pvid_change(struct mlxsw_sp *mlxsw_sp,
static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
const struct switchdev_obj_port_vlan *vlan,
- struct switchdev_trans *trans,
struct netlink_ext_ack *extack)
{
bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
@@ -1209,8 +1208,7 @@ static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
int err = 0;
if ((vlan->flags & BRIDGE_VLAN_INFO_BRENTRY) &&
- br_vlan_enabled(orig_dev) &&
- switchdev_trans_ph_prepare(trans))
+ br_vlan_enabled(orig_dev))
err = mlxsw_sp_br_ban_rif_pvid_change(mlxsw_sp,
orig_dev, vlan);
if (!err)
@@ -1218,9 +1216,6 @@ static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
return err;
}
- if (switchdev_trans_ph_commit(trans))
- return 0;
-
bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
if (WARN_ON(!bridge_port))
return -EINVAL;
@@ -1764,16 +1759,13 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev,
{
struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
const struct switchdev_obj_port_vlan *vlan;
- struct switchdev_trans trans;
int err = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
- trans.ph_prepare = true;
- err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
- extack);
+ err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, extack);
/* The event is emitted before the changes are actually
* applied to the bridge. Therefore schedule the respin
@@ -1781,13 +1773,6 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev,
* updated bridge state.
*/
mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp);
-
- if (err)
- break;
-
- trans.ph_prepare = false;
- err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
- extack);
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
@@ -3351,8 +3336,7 @@ mlxsw_sp_switchdev_vxlan_vlan_del(struct mlxsw_sp *mlxsw_sp,
static int
mlxsw_sp_switchdev_vxlan_vlans_add(struct net_device *vxlan_dev,
struct switchdev_notifier_port_obj_info *
- port_obj_info,
- struct switchdev_trans *trans)
+ port_obj_info)
{
struct switchdev_obj_port_vlan *vlan =
SWITCHDEV_OBJ_PORT_VLAN(port_obj_info->obj);
@@ -3374,9 +3358,6 @@ mlxsw_sp_switchdev_vxlan_vlans_add(struct net_device *vxlan_dev,
port_obj_info->handled = true;
- if (switchdev_trans_ph_commit(trans))
- return 0;
-
bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev);
if (!bridge_device)
return -EINVAL;
@@ -3427,22 +3408,12 @@ mlxsw_sp_switchdev_handle_vxlan_obj_add(struct net_device *vxlan_dev,
struct switchdev_notifier_port_obj_info *
port_obj_info)
{
- struct switchdev_trans trans;
int err = 0;
switch (port_obj_info->obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
- trans.ph_prepare = true;
- err = mlxsw_sp_switchdev_vxlan_vlans_add(vxlan_dev,
- port_obj_info,
- &trans);
- if (err)
- break;
-
- trans.ph_prepare = false;
err = mlxsw_sp_switchdev_vxlan_vlans_add(vxlan_dev,
- port_obj_info,
- &trans);
+ port_obj_info);
break;
default:
break;
--
2.25.1
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