Merge master.kernel.org:/home/rmk/linux-2.6-arm

[linux-2.6-omap-h63xx.git] / include / linux / etherdevice.h

diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index b7558ec81ed58117042520f8cb7d764028252c60..1cb0f0b90926116cdbe854b85a6b144a3bf021ed 100644 (file)
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -27,6 +27,7 @@
 #include <linux/if_ether.h>
 #include <linux/netdevice.h>
 #include <linux/random.h>
+#include <asm/unaligned.h>
 
 #ifdef __KERNEL__
 extern __be16          eth_type_trans(struct sk_buff *skb, struct net_device *dev);
@@ -41,6 +42,10 @@ extern int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh);
 extern void eth_header_cache_update(struct hh_cache *hh,
                                    const struct net_device *dev,
                                    const unsigned char *haddr);
+extern int eth_mac_addr(struct net_device *dev, void *p);
+extern int eth_change_mtu(struct net_device *dev, int new_mtu);
+extern int eth_validate_addr(struct net_device *dev);
+
 
 
 extern struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count);
@@ -70,8 +75,7 @@ static inline int is_multicast_ether_addr(const u8 *addr)
 }
 
 /**
- * is_local_ether_addr - Determine if the Ethernet address is locally-assigned
- * one (IEEE 802).
+ * is_local_ether_addr - Determine if the Ethernet address is locally-assigned one (IEEE 802).
  * @addr: Pointer to a six-byte array containing the Ethernet address
  *
  * Return true if the address is a local address.
@@ -137,6 +141,47 @@ static inline unsigned compare_ether_addr(const u8 *addr1, const u8 *addr2)
        BUILD_BUG_ON(ETH_ALEN != 6);
        return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])) != 0;
 }
+
+static inline unsigned long zap_last_2bytes(unsigned long value)
+{
+#ifdef __BIG_ENDIAN
+       return value >> 16;
+#else
+       return value << 16;
+#endif
+}
+
+/**
+ * compare_ether_addr_64bits - Compare two Ethernet addresses
+ * @addr1: Pointer to an array of 8 bytes
+ * @addr2: Pointer to an other array of 8 bytes
+ *
+ * Compare two ethernet addresses, returns 0 if equal.
+ * Same result than "memcmp(addr1, addr2, ETH_ALEN)" but without conditional
+ * branches, and possibly long word memory accesses on CPU allowing cheap
+ * unaligned memory reads.
+ * arrays = { byte1, byte2, byte3, byte4, byte6, byte7, pad1, pad2}
+ *
+ * Please note that alignment of addr1 & addr2 is only guaranted to be 16 bits.
+ */
+
+static inline unsigned compare_ether_addr_64bits(const u8 addr1[6+2],
+                                                const u8 addr2[6+2])
+{
+#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
+       unsigned long fold = ((*(unsigned long *)addr1) ^
+                             (*(unsigned long *)addr2));
+
+       if (sizeof(fold) == 8)
+               return zap_last_2bytes(fold) != 0;
+
+       fold |= zap_last_2bytes((*(unsigned long *)(addr1 + 4)) ^
+                               (*(unsigned long *)(addr2 + 4)));
+       return fold != 0;
+#else
+       return compare_ether_addr(addr1, addr2);
+#endif
+}
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_ETHERDEVICE_H */