[PATCH 0/2] net: ethernet: ti: cpsw: fix runtime pm while add/del reserved vid

Here 2 not critical fixes for:
- vlan ale table leak while error if deleting vlan (simplifies next fix)
- runtime pm while try to set reserved vlan

Based on net/master

Ivan Khoronzhuk (2):
  net: ethernet: ti: cpsw: clear all entries when delete vid
  net: ethernet: ti: cpsw: fix runtime_pm while add/kill vlan

 drivers/net/ethernet/ti/cpsw.c     | 25 +++++++++++--------------
 drivers/net/ethernet/ti/cpsw_ale.c |  2 +-
 2 files changed, 12 insertions(+), 15 deletions(-)

-- 
2.17.1

In cases if some of the entries were not found in forwarding table
while killing vlan, the rest not needed entries still left in the
table. No need to stop, as entry was deleted anyway. So fix this by
returning error only after all was cleaned. To implement this, return
-ENOENT in cpsw_ale_del_mcast() as it's supposed to be.

Signed-off-by: Ivan Khoronzhuk <redacted>
---
 drivers/net/ethernet/ti/cpsw.c     | 14 ++++----------
 drivers/net/ethernet/ti/cpsw_ale.c |  2 +-
 2 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 358edab9e72e..9edac671f276 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c

@@ -2125,16 +2125,10 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
 
 	dev_info(priv->dev, "removing vlanid %d from vlan filter\n", vid);
 	ret = cpsw_ale_del_vlan(cpsw->ale, vid, 0);
-	if (ret != 0)
-		return ret;
-
-	ret = cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
-				 HOST_PORT_NUM, ALE_VLAN, vid);
-	if (ret != 0)
-		return ret;
-
-	ret = cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
-				 0, ALE_VLAN, vid);
+	ret |= cpsw_ale_del_ucast(cpsw->ale, priv->mac_addr,
+				  HOST_PORT_NUM, ALE_VLAN, vid);
+	ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
+				  0, ALE_VLAN, vid);
 	pm_runtime_put(cpsw->dev);
 	return ret;
 }

diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/cpsw_ale.c
index 93dc05c194d3..5766225a4ce1 100644
--- a/drivers/net/ethernet/ti/cpsw_ale.c
+++ b/drivers/net/ethernet/ti/cpsw_ale.c

@@ -394,7 +394,7 @@ int cpsw_ale_del_mcast(struct cpsw_ale *ale, u8 *addr, int port_mask,
 
 	idx = cpsw_ale_match_addr(ale, addr, (flags & ALE_VLAN) ? vid : 0);
 	if (idx < 0)
-		return -EINVAL;
+		return -ENOENT;
 
 	cpsw_ale_read(ale, idx, ale_entry);
 

-- 
2.17.1

It's exclusive with normal behaviour but if try to set vlan to one of
the reserved values is made, the cpsw runtime pm is broken.

Fixes: commit a6c5d14f5136
("drivers: net: cpsw: ndev: fix accessing to suspended device")

Signed-off-by: Ivan Khoronzhuk <redacted>
---
 drivers/net/ethernet/ti/cpsw.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 9edac671f276..3e34cb8ac1d3 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c

@@ -2086,14 +2086,16 @@ static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
 		int i;
 
 		for (i = 0; i < cpsw->data.slaves; i++) {
-			if (vid == cpsw->slaves[i].port_vlan)
-				return -EINVAL;
+			if (vid == cpsw->slaves[i].port_vlan) {
+				ret = -EINVAL;
+				goto err;
+			}
 		}
 	}
 
 	dev_info(priv->dev, "Adding vlanid %d to vlan filter\n", vid);
 	ret = cpsw_add_vlan_ale_entry(priv, vid);
-
+err:
 	pm_runtime_put(cpsw->dev);
 	return ret;
 }

@@ -2119,7 +2121,7 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
 
 		for (i = 0; i < cpsw->data.slaves; i++) {
 			if (vid == cpsw->slaves[i].port_vlan)
-				return -EINVAL;
+				goto err;
 		}
 	}
 

@@ -2129,6 +2131,7 @@ static int cpsw_ndo_vlan_rx_kill_vid(struct net_device *ndev,
 				  HOST_PORT_NUM, ALE_VLAN, vid);
 	ret |= cpsw_ale_del_mcast(cpsw->ale, priv->ndev->broadcast,
 				  0, ALE_VLAN, vid);
+err:
 	pm_runtime_put(cpsw->dev);
 	return ret;
 }

-- 
2.17.1

On 08/10/2018 07:47 AM, Ivan Khoronzhuk wrote:

Here 2 not critical fixes for:
- vlan ale table leak while error if deleting vlan (simplifies next fix)
- runtime pm while try to set reserved vlan

Based on net/master

Ivan Khoronzhuk (2):
   net: ethernet: ti: cpsw: clear all entries when delete vid
   net: ethernet: ti: cpsw: fix runtime_pm while add/kill vlan

  drivers/net/ethernet/ti/cpsw.c     | 25 +++++++++++--------------
  drivers/net/ethernet/ti/cpsw_ale.c |  2 +-
  2 files changed, 12 insertions(+), 15 deletions(-)

Thank you.
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>

-- 
regards,
-grygorii

From: Ivan Khoronzhuk <redacted>
Date: Fri, 10 Aug 2018 15:47:07 +0300

Here 2 not critical fixes for:
- vlan ale table leak while error if deleting vlan (simplifies next fix)
- runtime pm while try to set reserved vlan

Series applied, thank you.