linux-kernel - [PATCH] net: fs_enet: set back promiscuity mode after restart

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Message-Id: <20141022070547.83AAB1A5E63@localhost.localdomain>
Date:	Wed, 22 Oct 2014 09:05:47 +0200 (CEST)
From:	Christophe Leroy <christophe.leroy@....fr>
To:	Pantelis Antoniou <pantelis.antoniou@...il.com>,
	Vitaly Bordug <vbordug@...mvista.com>, davem@...emloft.net
CC:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	netdev@...r.kernel.org, Germain Montoies <germain.montoies@....fr>
Subject: [PATCH] net: fs_enet: set back promiscuity mode after restart

After interface restart (eg: after link disconnection/reconnection), the bridge
function doesn't work anymore. This is due to the promiscuous mode being cleared
by the restart.

The mac-fcc already includes code to set the promiscuous mode back during the restart.
This patch adds the same handling to mac-fec and mac-scc.

Tested with bridge function on MPC885 with FEC.

Reported-by: Germain Montoies <germain.montoies@....fr>
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>

---
 drivers/net/ethernet/freescale/fs_enet/mac-fec.c | 3 +++
 drivers/net/ethernet/freescale/fs_enet/mac-scc.c | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c
index 3d4e08b..b34214e 100644
--- a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c
+++ b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c
@@ -341,6 +341,9 @@ static void restart(struct net_device *dev)
 		FC(fecp, x_cntrl, FEC_TCNTRL_FDEN);	/* FD disable */
 	}
 
+	/* Restore multicast and promiscuous settings */
+	set_multicast_list(dev);
+
 	/*
 	 * Enable interrupts we wish to service.
 	 */
diff --git a/drivers/net/ethernet/freescale/fs_enet/mac-scc.c b/drivers/net/ethernet/freescale/fs_enet/mac-scc.c
index f30411f..7a184e8 100644
--- a/drivers/net/ethernet/freescale/fs_enet/mac-scc.c
+++ b/drivers/net/ethernet/freescale/fs_enet/mac-scc.c
@@ -355,6 +355,9 @@ static void restart(struct net_device *dev)
 	if (fep->phydev->duplex)
 		S16(sccp, scc_psmr, SCC_PSMR_LPB | SCC_PSMR_FDE);
 
+	/* Restore multicast and promiscuous settings */
+	set_multicast_list(dev);
+
 	S32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
 }
 
-- 
2.1.0

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