linux-kernel - [PATCH 1/1] powerpc: Fix multicast problem in fs

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Message-Id: <1303289719-16913-1-git-send-email-gizero@gmail.com>
Date:	Wed, 20 Apr 2011 10:55:19 +0200
From:	Andrea Galbusera <gizero@...il.com>
To:	Pantelis Antoniou <pantelis.antoniou@...il.com>,
	Vitaly Bordug <vbordug@...mvista.com>
Cc:	linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, Andrea Galbusera <gizero@...il.com>
Subject: [PATCH 1/1] powerpc: Fix multicast problem in fs_enet driver

mac-fec.c was setting individual UDP address registers instead of multicast
group address registers when joining a multicast group.
This prevented from correctly receiving UDP multicast packets.
According to datasheet, replaced hash_table_high and hash_table_low
with grp_hash_table_high and grp_hash_table_low respectively.

Tested on a MPC5121 based board.

Signed-off-by: Andrea Galbusera <gizero@...il.com>
---
 drivers/net/fs_enet/mac-fec.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/fs_enet/mac-fec.c b/drivers/net/fs_enet/mac-fec.c
index 61035fc..b9fbc83 100644
--- a/drivers/net/fs_enet/mac-fec.c
+++ b/drivers/net/fs_enet/mac-fec.c
@@ -226,8 +226,8 @@ static void set_multicast_finish(struct net_device *dev)
 	}
 
 	FC(fecp, r_cntrl, FEC_RCNTRL_PROM);
-	FW(fecp, hash_table_high, fep->fec.hthi);
-	FW(fecp, hash_table_low, fep->fec.htlo);
+	FW(fecp, grp_hash_table_high, fep->fec.hthi);
+	FW(fecp, grp_hash_table_low, fep->fec.htlo);
 }
 
 static void set_multicast_list(struct net_device *dev)
@@ -273,8 +273,8 @@ static void restart(struct net_device *dev)
 	/*
 	 * Reset all multicast.
 	 */
-	FW(fecp, hash_table_high, fep->fec.hthi);
-	FW(fecp, hash_table_low, fep->fec.htlo);
+	FW(fecp, grp_hash_table_high, fep->fec.hthi);
+	FW(fecp, grp_hash_table_low, fep->fec.htlo);
 
 	/*
 	 * Set maximum receive buffer size.
-- 
1.7.0.4

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