netdev - [PATCH 2.6.21-rc5] b44: fix IFF_ALLMULTI handling of CAM slots

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Message-Id: <1175447428.9384.4.camel@tomato>
Date:	Sun, 01 Apr 2007 13:10:28 -0400
From:	Bill Helfinstine <bhelf@...tterfly.whirpon.com>
To:	zambrano@...adcom.com, jgarzik@...ox.com
Cc:	netdev@...r.kernel.org, bhelf@...tterfly.whirpon.com
Subject: [PATCH 2.6.21-rc5] b44: fix IFF_ALLMULTI handling of CAM slots

If you set the IFF_ALLMULTI flag on a b44 device, or if you join more than
B44_MCAST_TABLE_SIZE multicast groups, the device will stop receiving unicast
messages.  This is because the __b44_set_mac_addr call sets the zeroth CAM
entry to the MAC address of the device, and then the loop at line 1722
proceeds to overwrite it unless the value of i is set by the __b44_load_mcast
call.  However, when IFF_ALLMULTI is set, that call is bypassed, leaving i set
to zero.  

Fixed by starting the loop at 1 to make it skip the CAM entry for the MAC
address.

Signed-off-by: Bill Helfinstine <bhelf@...tterfly.whirpon.com>

---

diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index aaada57..d742bfe 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -1709,7 +1709,7 @@ static void __b44_set_rx_mode(struct net_device *dev)
 		bw32(bp, B44_RXCONFIG, val);
 	} else {
 		unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
-		int i = 0;
+		int i = 1;

 		__b44_set_mac_addr(bp);

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