1 files changed, 14 insertions, 23 deletions

diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index 2edc8b796a4e..13a63b48b7ee 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -154,27 +154,15 @@ EXPORT_SYMBOL(eth_get_headlen);
  */
 __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
 {
-	unsigned short _service_access_point;
 	const unsigned short *sap;
 	const struct ethhdr *eth;
+	__be16 res;
 
 	skb->dev = dev;
 	skb_reset_mac_header(skb);
 
-	eth = (struct ethhdr *)skb->data;
-	skb_pull_inline(skb, ETH_HLEN);
-
-	if (unlikely(!ether_addr_equal_64bits(eth->h_dest,
-					      dev->dev_addr))) {
-		if (unlikely(is_multicast_ether_addr_64bits(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 {
-			skb->pkt_type = PACKET_OTHERHOST;
-		}
-	}
+	eth = eth_skb_pull_mac(skb);
+	eth_skb_pkt_type(skb, dev);
 
 	/*
 	 * Some variants of DSA tagging don't have an ethertype field
@@ -193,15 +181,15 @@ __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
 	 *      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.
+	 *	We use skb->dev as temporary storage to not hit
+	 *	CONFIG_STACKPROTECTOR_STRONG=y costs on some platforms.
 	 */
-	sap = skb_header_pointer(skb, 0, sizeof(*sap), &_service_access_point);
-	if (sap && *sap == 0xFFFF)
-		return htons(ETH_P_802_3);
+	sap = skb_header_pointer(skb, 0, sizeof(*sap), &skb->dev);
+	res = (sap && *sap == 0xFFFF) ? htons(ETH_P_802_3) : htons(ETH_P_802_2);
 
-	/*
-	 *      Real 802.2 LLC
-	 */
-	return htons(ETH_P_802_2);
+	/* restore skb->dev in case it was mangled by skb_header_pointer(). */
+	skb->dev = dev;
+	return res;
 }
 EXPORT_SYMBOL(eth_type_trans);
 
@@ -625,7 +613,10 @@ EXPORT_SYMBOL(fwnode_get_mac_address);
  */
 int device_get_mac_address(struct device *dev, char *addr)
 {
-	return fwnode_get_mac_address(dev_fwnode(dev), addr);
+	if (!fwnode_get_mac_address(dev_fwnode(dev), addr))
+		return 0;
+
+	return nvmem_get_mac_address(dev, addr);
 }
 EXPORT_SYMBOL(device_get_mac_address);