linux-kernel - [PATCH 4.14 09/29] net: aquantia: Fix IFF

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Message-Id: <20180821055108.794634867@linuxfoundation.org>
Date:   Tue, 21 Aug 2018 08:21:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Dmitry Bogdanov <dmitry.bogdanov@...antia.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.14 09/29] net: aquantia: Fix IFF_ALLMULTI flag functionality

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Bogdanov <dmitry.bogdanov@...antia.com>

[ Upstream commit 11ba961c916127651e12af6cad3891f8aeb25aa9 ]

It was noticed that NIC always pass all multicast traffic to the host
regardless of IFF_ALLMULTI flag on the interface.
The rule in MC Filter Table in NIC, that is configured to accept any
multicast packets, is turning on if IFF_MULTICAST flag is set on the
interface. It leads to passing all multicast traffic to the host.
This fix changes the condition to turn on that rule by checking
IFF_ALLMULTI flag as it should.

Fixes: b21f502f84be ("net:ethernet:aquantia: Fix for multicast filter handling.")
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@...antia.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
@@ -752,7 +752,7 @@ static int hw_atl_b0_hw_packet_filter_se
 
 	rpfl2promiscuous_mode_en_set(self, IS_FILTER_ENABLED(IFF_PROMISC));
 	rpfl2multicast_flr_en_set(self,
-				  IS_FILTER_ENABLED(IFF_MULTICAST), 0);
+				  IS_FILTER_ENABLED(IFF_ALLMULTI), 0);
 
 	rpfl2_accept_all_mc_packets_set(self,
 					IS_FILTER_ENABLED(IFF_ALLMULTI));