netdev - [net-next 7/7] fm10k: clarify action when updating the VLAN table

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Date:   Wed, 24 Jan 2018 14:45:46 -0800
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Ngai-Mint Kwan <ngai-mint.kwan@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com, jogreene@...hat.com,
        Jacob Keller <jacob.e.keller@...il.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 7/7] fm10k: clarify action when updating the VLAN table

From: Ngai-Mint Kwan <ngai-mint.kwan@...el.com>

Clarify the comment for when entering promiscuous mode that we update
the VLAN table. Add a comment distinguishing the case where we're
exiting promiscuous mode and need to clear the entire VLAN table.

Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@...el.com>
Signed-off-by: Jacob Keller <jacob.e.keller@...il.com>
Tested-by: Krishneil Singh <krishneil.k.singh@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/fm10k/fm10k_netdev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
index 4c9d8e52415b..a38ae5c54da3 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
@@ -1165,10 +1165,12 @@ static void fm10k_set_rx_mode(struct net_device *dev)
 
 	/* update xcast mode first, but only if it changed */
 	if (interface->xcast_mode != xcast_mode) {
-		/* update VLAN table */
+		/* update VLAN table when entering promiscuous mode */
 		if (xcast_mode == FM10K_XCAST_MODE_PROMISC)
 			fm10k_queue_vlan_request(interface, FM10K_VLAN_ALL,
 						 0, true);
+
+		/* clear VLAN table when exiting promiscuous mode */
 		if (interface->xcast_mode == FM10K_XCAST_MODE_PROMISC)
 			fm10k_clear_unused_vlans(interface);
 
-- 
2.14.3