From 667d41008eb8a0e1d495d6c0a6143b43fe587c98 Mon Sep 17 00:00:00 2001
From: David Kilroy <kilroyd@gmail.com>
Date: Sat, 23 Aug 2008 19:03:34 +0100
Subject: [PATCH] orinoco: Multicast to the specified addresses
When multicasting the driver sets the number of group addresses using
the count from the previous set multicast command. In general this means
you have to set the multicast addresses twice to get the behaviour you
want.
If we were multicasting, and reduce the number of addresses we are
multicasting to, then the driver would write uninitialised data from the
stack into the group addresses to multicast to.
Only write the multicast addresses we have specifically set.
Signed-off-by: David Kilroy <kilroyd@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/orinoco.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index 1ebcafe7ca5fd..36c004e156021 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -1970,6 +1970,9 @@ __orinoco_set_multicast_list(struct net_device *dev)
priv->promiscuous = promisc;
}
+ /* If we're not in promiscuous mode, then we need to set the
+ * group address if either we want to multicast, or if we were
+ * multicasting and want to stop */
if (! promisc && (mc_count || priv->mc_count) ) {
struct dev_mc_list *p = dev->mc_list;
struct hermes_multicast mclist;
@@ -1989,9 +1992,10 @@ __orinoco_set_multicast_list(struct net_device *dev)
printk(KERN_WARNING "%s: Multicast list is "
"longer than mc_count\n", dev->name);
- err = hermes_write_ltv(hw, USER_BAP, HERMES_RID_CNFGROUPADDRESSES,
- HERMES_BYTES_TO_RECLEN(priv->mc_count * ETH_ALEN),
- &mclist);
+ err = hermes_write_ltv(hw, USER_BAP,
+ HERMES_RID_CNFGROUPADDRESSES,
+ HERMES_BYTES_TO_RECLEN(mc_count * ETH_ALEN),
+ &mclist);
if (err)
printk(KERN_ERR "%s: Error %d setting multicast list.\n",
dev->name, err);
--
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