netdev - [net-next 03/17] i40e: Fix VEB/VEPA bridge mode mismatch issue

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Date:	Fri, 23 Oct 2015 06:17:45 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Akeem G Abodunrin <akeem.g.abodunrin@...el.com>,
	netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
	jogreene@...hat.com, Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 03/17] i40e: Fix VEB/VEPA bridge mode mismatch issue

From: Akeem G Abodunrin <akeem.g.abodunrin@...el.com>

Fix i40e_is_vsi_uplink_mode_veb to check if bridge is actually
in VEB mode before allowing LB in the add VSI routine, instead of
unconditionally returning VEB bridge mode.

Change-ID: I162397b1bdd02367735fe9baaeb51465be2a3ce9
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index d05254c..f22ded5 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -8741,12 +8741,22 @@ int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
 		return 1;
 
 	veb = pf->veb[vsi->veb_idx];
+	if (!veb) {
+		dev_info(&pf->pdev->dev,
+			 "There is no veb associated with the bridge\n");
+		return -ENOENT;
+	}
+
 	/* Uplink is a bridge in VEPA mode */
-	if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
+	if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
 		return 0;
+	} else {
+		/* Uplink is a bridge in VEB mode */
+		return 1;
+	}
 
-	/* Uplink is a bridge in VEB mode */
-	return 1;
+	/* VEPA is now default bridge, so return 0 */
+	return 0;
 }
 
 /**
-- 
2.4.3

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