diff mbox

[net-next] bnx2x: Correct logic for pvid configuration.

Message ID 1438508561-31209-1-git-send-email-Yuval.Mintz@qlogic.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Yuval Mintz Aug. 2, 2015, 9:42 a.m. UTC
Commit 05cc5a39ddb7 ("bnx2x: add vlan filtering offload") has introduced
an incorrect logic for checking whether pvid should be configured for
a vf, causing the hypervisor driver to send unneeded ramrods for all of
the vfs each time a pvid has changed.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
---
Looks like this has been hidden by the fact that
VLAN_VALID == (1 << MAC_ADDR_VALID).
Since MAC is almost always set by the hypervisor it simply caused
additional ramrods to be sent instead of preventing the feature.
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

David Miller Aug. 3, 2015, 12:18 a.m. UTC | #1
From: Yuval Mintz <Yuval.Mintz@qlogic.com>
Date: Sun, 2 Aug 2015 12:42:41 +0300

> Commit 05cc5a39ddb7 ("bnx2x: add vlan filtering offload") has introduced
> an incorrect logic for checking whether pvid should be configured for
> a vf, causing the hypervisor driver to send unneeded ramrods for all of
> the vfs each time a pvid has changed.
> 
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
> Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
> ---
> Looks like this has been hidden by the fact that
> VLAN_VALID == (1 << MAC_ADDR_VALID).
> Since MAC is almost always set by the hypervisor it simply caused
> additional ramrods to be sent instead of preventing the feature.

Applied, thank you.
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diff mbox

Patch

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
index ec82831..9d02734 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
@@ -2528,7 +2528,7 @@  void bnx2x_pf_set_vfs_vlan(struct bnx2x *bp)
 	DP(BNX2X_MSG_IOV, "configuring vlan for VFs from sp-task\n");
 	for_each_vf(bp, vfidx) {
 		bulletin = BP_VF_BULLETIN(bp, vfidx);
-		if (bulletin->valid_bitmap & VLAN_VALID)
+		if (bulletin->valid_bitmap & (1 << VLAN_VALID))
 			bnx2x_set_vf_vlan(bp->dev, vfidx, bulletin->vlan, 0);
 	}
 }