1 files changed, 85 insertions, 76 deletions

diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index a7b417523e9..5dc638cad2e 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -57,8 +57,8 @@
 #include <net/sock.h>
 #include <net/ipv6.h>
 #include <net/ip.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
+#include <net/dsa.h>
+#include <linux/uaccess.h>
 
 __setup("ether=", netdev_boot_setup);
 
@@ -72,16 +72,16 @@ __setup("ether=", netdev_boot_setup);
  * @len:   packet length (<= skb->len)
  *
  *
- * Set the protocol type. For a packet of type ETH_P_802_3 we put the length
- * in here instead. It is up to the 802.2 layer to carry protocol information.
+ * Set the protocol type. For a packet of type ETH_P_802_3/2 we put the length
+ * in here instead.
  */
 int eth_header(struct sk_buff *skb, struct net_device *dev,
 	       unsigned short type,
-	       const void *daddr, const void *saddr, unsigned len)
+	       const void *daddr, const void *saddr, unsigned int len)
 {
 	struct ethhdr *eth = (struct ethhdr *)skb_push(skb, ETH_HLEN);
 
-	if (type != ETH_P_802_3)
+	if (type != ETH_P_802_3 && type != ETH_P_802_2)
 		eth->h_proto = htons(type);
 	else
 		eth->h_proto = htons(len);
@@ -129,13 +129,13 @@ int eth_rebuild_header(struct sk_buff *skb)
 
 	switch (eth->h_proto) {
 #ifdef CONFIG_INET
-	case __constant_htons(ETH_P_IP):
+	case htons(ETH_P_IP):
 		return arp_find(eth->h_dest, skb);
 #endif
 	default:
-		printk(KERN_DEBUG
+		netdev_dbg(dev,
 		       "%s: unable to resolve type %X addresses.\n",
-		       dev->name, (int)eth->h_proto);
+		       dev->name, ntohs(eth->h_proto));
 
 		memcpy(eth->h_source, dev->dev_addr, ETH_ALEN);
 		break;
@@ -156,46 +156,48 @@ EXPORT_SYMBOL(eth_rebuild_header);
  */
 __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
 {
-	struct ethhdr *eth;
-	unsigned char *rawp;
+	unsigned short _service_access_point;
+	const unsigned short *sap;
+	const struct ethhdr *eth;
 
 	skb->dev = dev;
 	skb_reset_mac_header(skb);
-	skb_pull(skb, ETH_HLEN);
+	skb_pull_inline(skb, ETH_HLEN);
 	eth = eth_hdr(skb);
 
-	if (is_multicast_ether_addr(eth->h_dest)) {
-		if (!compare_ether_addr(eth->h_dest, dev->broadcast))
+	if (unlikely(is_multicast_ether_addr(eth->h_dest))) {
+		if (ether_addr_equal_64bits(eth->h_dest, dev->broadcast))
 			skb->pkt_type = PACKET_BROADCAST;
 		else
 			skb->pkt_type = PACKET_MULTICAST;
 	}
+	else if (unlikely(!ether_addr_equal_64bits(eth->h_dest,
+						   dev->dev_addr)))
+		skb->pkt_type = PACKET_OTHERHOST;
 
 	/*
-	 *      This ALLMULTI check should be redundant by 1.4
-	 *      so don't forget to remove it.
-	 *
-	 *      Seems, you forgot to remove it. All silly devices
-	 *      seems to set IFF_PROMISC.
+	 * Some variants of DSA tagging don't have an ethertype field
+	 * at all, so we check here whether one of those tagging
+	 * variants has been configured on the receiving interface,
+	 * and if so, set skb->protocol without looking at the packet.
 	 */
+	if (unlikely(netdev_uses_dsa_tags(dev)))
+		return htons(ETH_P_DSA);
 
-	else if (1 /*dev->flags&IFF_PROMISC */ ) {
-		if (unlikely(compare_ether_addr(eth->h_dest, dev->dev_addr)))
-			skb->pkt_type = PACKET_OTHERHOST;
-	}
+	if (unlikely(netdev_uses_trailer_tags(dev)))
+		return htons(ETH_P_TRAILER);
 
-	if (ntohs(eth->h_proto) >= 1536)
+	if (likely(ntohs(eth->h_proto) >= ETH_P_802_3_MIN))
 		return eth->h_proto;
 
-	rawp = skb->data;
-
 	/*
 	 *      This is a magic hack to spot IPX packets. Older Novell breaks
 	 *      the protocol design and runs IPX over 802.3 without an 802.2 LLC
 	 *      layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
 	 *      won't work for fault tolerant netware but does for the rest.
 	 */
-	if (*(unsigned short *)rawp == 0xFFFF)
+	sap = skb_header_pointer(skb, 0, sizeof(*sap), &_service_access_point);
+	if (sap && *sap == 0xFFFF)
 		return htons(ETH_P_802_3);
 
 	/*
@@ -222,11 +224,12 @@ EXPORT_SYMBOL(eth_header_parse);
  * eth_header_cache - fill cache entry from neighbour
  * @neigh: source neighbour
  * @hh: destination cache entry
+ * @type: Ethernet type field
+ *
  * Create an Ethernet header template from the neighbour.
  */
-int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh)
+int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh, __be16 type)
 {
-	__be16 type = hh->hh_type;
 	struct ethhdr *eth;
 	const struct net_device *dev = neigh->dev;
 
@@ -262,25 +265,56 @@ void eth_header_cache_update(struct hh_cache *hh,
 EXPORT_SYMBOL(eth_header_cache_update);
 
 /**
- * eth_mac_addr - set new Ethernet hardware address
+ * eth_prepare_mac_addr_change - prepare for mac change
  * @dev: network device
  * @p: socket address
- * Change hardware address of device.
- *
- * This doesn't change hardware matching, so needs to be overridden
- * for most real devices.
  */
-static int eth_mac_addr(struct net_device *dev, void *p)
+int eth_prepare_mac_addr_change(struct net_device *dev, void *p)
 {
 	struct sockaddr *addr = p;
 
-	if (netif_running(dev))
+	if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev))
 		return -EBUSY;
 	if (!is_valid_ether_addr(addr->sa_data))
 		return -EADDRNOTAVAIL;
+	return 0;
+}
+EXPORT_SYMBOL(eth_prepare_mac_addr_change);
+
+/**
+ * eth_commit_mac_addr_change - commit mac change
+ * @dev: network device
+ * @p: socket address
+ */
+void eth_commit_mac_addr_change(struct net_device *dev, void *p)
+{
+	struct sockaddr *addr = p;
+
 	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+}
+EXPORT_SYMBOL(eth_commit_mac_addr_change);
+
+/**
+ * eth_mac_addr - set new Ethernet hardware address
+ * @dev: network device
+ * @p: socket address
+ *
+ * Change hardware address of device.
+ *
+ * This doesn't change hardware matching, so needs to be overridden
+ * for most real devices.
+ */
+int eth_mac_addr(struct net_device *dev, void *p)
+{
+	int ret;
+
+	ret = eth_prepare_mac_addr_change(dev, p);
+	if (ret < 0)
+		return ret;
+	eth_commit_mac_addr_change(dev, p);
 	return 0;
 }
+EXPORT_SYMBOL(eth_mac_addr);
 
 /**
  * eth_change_mtu - set new MTU size
@@ -290,21 +324,23 @@ static int eth_mac_addr(struct net_device *dev, void *p)
  * Allow changing MTU size. Needs to be overridden for devices
  * supporting jumbo frames.
  */
-static int eth_change_mtu(struct net_device *dev, int new_mtu)
+int eth_change_mtu(struct net_device *dev, int new_mtu)
 {
 	if (new_mtu < 68 || new_mtu > ETH_DATA_LEN)
 		return -EINVAL;
 	dev->mtu = new_mtu;
 	return 0;
 }
+EXPORT_SYMBOL(eth_change_mtu);
 
-static int eth_validate_addr(struct net_device *dev)
+int eth_validate_addr(struct net_device *dev)
 {
 	if (!is_valid_ether_addr(dev->dev_addr))
-		return -EINVAL;
+		return -EADDRNOTAVAIL;
 
 	return 0;
 }
+EXPORT_SYMBOL(eth_validate_addr);
 
 const struct header_ops eth_header_ops ____cacheline_aligned = {
 	.create		= eth_header,
@@ -317,22 +353,19 @@ const struct header_ops eth_header_ops ____cacheline_aligned = {
 /**
  * ether_setup - setup Ethernet network device
  * @dev: network device
+ *
  * Fill in the fields of the device structure with Ethernet-generic values.
  */
 void ether_setup(struct net_device *dev)
 {
 	dev->header_ops		= &eth_header_ops;
-
-	dev->change_mtu		= eth_change_mtu;
-	dev->set_mac_address 	= eth_mac_addr;
-	dev->validate_addr	= eth_validate_addr;
-
 	dev->type		= ARPHRD_ETHER;
 	dev->hard_header_len 	= ETH_HLEN;
 	dev->mtu		= ETH_DATA_LEN;
 	dev->addr_len		= ETH_ALEN;
 	dev->tx_queue_len	= 1000;	/* Ethernet wants good queues */
 	dev->flags		= IFF_BROADCAST|IFF_MULTICAST;
+	dev->priv_flags		|= IFF_TX_SKB_SHARING;
 
 	memset(dev->broadcast, 0xFF, ETH_ALEN);
 
@@ -340,10 +373,11 @@ void ether_setup(struct net_device *dev)
 EXPORT_SYMBOL(ether_setup);
 
 /**
- * alloc_etherdev_mq - Allocates and sets up an Ethernet device
+ * alloc_etherdev_mqs - Allocates and sets up an Ethernet device
  * @sizeof_priv: Size of additional driver-private structure to be allocated
  *	for this Ethernet device
- * @queue_count: The number of queues this device has.
+ * @txqs: The number of TX queues this device has.
+ * @rxqs: The number of RX queues this device has.
  *
  * Fill in the fields of the device structure with Ethernet-generic
  * values. Basically does everything except registering the device.
@@ -353,40 +387,15 @@ EXPORT_SYMBOL(ether_setup);
  * this private data area.
  */
 
-struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count)
+struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs,
+				      unsigned int rxqs)
 {
-	return alloc_netdev_mq(sizeof_priv, "eth%d", ether_setup, queue_count);
-}
-EXPORT_SYMBOL(alloc_etherdev_mq);
-
-static size_t _format_mac_addr(char *buf, int buflen,
-				const unsigned char *addr, int len)
-{
-	int i;
-	char *cp = buf;
-
-	for (i = 0; i < len; i++) {
-		cp += scnprintf(cp, buflen - (cp - buf), "%02x", addr[i]);
-		if (i == len - 1)
-			break;
-		cp += strlcpy(cp, ":", buflen - (cp - buf));
-	}
-	return cp - buf;
+	return alloc_netdev_mqs(sizeof_priv, "eth%d", ether_setup, txqs, rxqs);
 }
+EXPORT_SYMBOL(alloc_etherdev_mqs);
 
 ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
 {
-	size_t l;
-
-	l = _format_mac_addr(buf, PAGE_SIZE, addr, len);
-	l += strlcpy(buf + l, "\n", PAGE_SIZE - l);
-	return ((ssize_t) l);
+	return scnprintf(buf, PAGE_SIZE, "%*phC\n", len, addr);
 }
 EXPORT_SYMBOL(sysfs_format_mac);
-
-char *print_mac(char *buf, const unsigned char *addr)
-{
-	_format_mac_addr(buf, MAC_BUF_SIZE, addr, ETH_ALEN);
-	return buf;
-}
-EXPORT_SYMBOL(print_mac);