netdev - [PATCH net 1/6] qede: Don't try removing unconfigured vlans

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 27 Jul 2016 14:45:19 +0300
From:	Yuval Mintz <Yuval.Mintz@...gic.com>
To:	<davem@...emloft.net>, <netdev@...r.kernel.org>
CC:	Yuval Mintz <Yuval.Mintz@...gic.com>
Subject: [PATCH net 1/6] qede: Don't try removing unconfigured vlans

As part of ndo_vlan_rx_kill_vid() implementation,
qede is requesting firmware to remove the vlan filter.
This currently happens even if the vlan wasn't previously
added [In case device ran out of vlan credits].

For PFs this doesn't cause any issues as the firmware
would simply ignore the removal request. But for VFs their
parent PF is holding an accounting of the configured vlans,
and such a request would cause the PF to fail the VF's
removal request.

Simply fix this for both PFs & VFs and don't remove filters
that were not previously added.

Fixes: 7c1bfcad9f3c8 ("qede: Add vlan filtering offload support")
Signed-off-by: Yuval Mintz <Yuval.Mintz@...gic.com>
---
 drivers/net/ethernet/qlogic/qede/qede_main.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index f8e11f9..8fe3cc1 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -2050,10 +2050,13 @@ static int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
 	}

 	/* Remove vlan */
-	rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL, vid);
-	if (rc) {
-		DP_ERR(edev, "Failed to remove VLAN %d\n", vid);
-		return -EINVAL;
+	if (vlan->configured) {
+		rc = qede_set_ucast_rx_vlan(edev, QED_FILTER_XCAST_TYPE_DEL,
+					    vid);
+		if (rc) {
+			DP_ERR(edev, "Failed to remove VLAN %d\n", vid);
+			return -EINVAL;
+		}
 	}

 	qede_del_vlan_from_list(edev, vlan);
-- 
1.9.3