netdev - [PATCH net-next-2.6 3/4] e1000e: use mc helpers to access multicast list

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Date:	Thu, 22 Oct 2009 15:54:05 +0200
From:	Jiri Pirko <jpirko@...hat.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, eric.dumazet@...il.com,
	jeffrey.t.kirsher@...el.com, jesse.brandeburg@...el.com,
	bruce.w.allan@...el.com, peter.p.waskiewicz.jr@...el.com,
	john.ronciak@...el.com, e1000-devel@...ts.sourceforge.net,
	mchehab@...radead.org, linux-media@...r.kernel.org
Subject: [PATCH net-next-2.6 3/4] e1000e: use mc helpers to access
	multicast list

Signed-off-by: Jiri Pirko <jpirko@...hat.com>
---
 drivers/net/e1000e/netdev.c |   34 +++++++++++++++++++---------------
 1 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 3769248..97cd106 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2529,6 +2529,17 @@ static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
 }
 
 /**
+ * e1000_mc_walker - helper function
+ **/
+static void e1000_mc_walker(void *data, unsigned char *addr)
+{
+	u8 **mta_list_i = data;
+
+	memcpy(*mta_list_i, addr, ETH_ALEN);
+	*mta_list_i += ETH_ALEN;
+}
+
+/**
  * e1000_set_multi - Multicast and Promiscuous mode set
  * @netdev: network interface device structure
  *
@@ -2542,10 +2553,9 @@ static void e1000_set_multi(struct net_device *netdev)
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 	struct e1000_hw *hw = &adapter->hw;
 	struct e1000_mac_info *mac = &hw->mac;
-	struct dev_mc_list *mc_ptr;
-	u8  *mta_list;
+	u8  *mta_list, *mta_list_i;
 	u32 rctl;
-	int i;
+	int mc_count;
 
 	/* Check for Promiscuous and All Multicast modes */
 
@@ -2567,23 +2577,17 @@ static void e1000_set_multi(struct net_device *netdev)
 
 	ew32(RCTL, rctl);
 
-	if (netdev->mc_count) {
-		mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC);
+	mc_count = netdev_mc_count(netdev);
+	if (mc_count) {
+		mta_list = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
 		if (!mta_list)
 			return;
 
 		/* prepare a packed array of only addresses. */
-		mc_ptr = netdev->mc_list;
-
-		for (i = 0; i < netdev->mc_count; i++) {
-			if (!mc_ptr)
-				break;
-			memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr,
-			       ETH_ALEN);
-			mc_ptr = mc_ptr->next;
-		}
+		mta_list_i = mta_list;
+		netdev_mc_walk(netdev, e1000_mc_walker, &mta_list_i);
 
-		e1000_update_mc_addr_list(hw, mta_list, i, 1,
+		e1000_update_mc_addr_list(hw, mta_list, mc_count, 1,
 					  mac->rar_entry_count);
 		kfree(mta_list);
 	} else {
-- 
1.6.2.5

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