#include <linux/if_ether.h>
#include <linux/netdevice.h>
#include <linux/random.h>
+#include <asm/unaligned.h>
#ifdef __KERNEL__
-extern int eth_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr,
- void *saddr, unsigned len);
-extern int eth_rebuild_header(struct sk_buff *skb);
extern __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
-extern void eth_header_cache_update(struct hh_cache *hh, struct net_device *dev,
- unsigned char * haddr);
-extern int eth_header_cache(struct neighbour *neigh,
- struct hh_cache *hh);
-
-extern struct net_device *alloc_etherdev(int sizeof_priv);
-static inline void eth_copy_and_sum (struct sk_buff *dest,
- const unsigned char *src,
- int len, int base)
-{
- memcpy (dest->data, src, len);
-}
+extern const struct header_ops eth_header_ops;
+
+extern int eth_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr, unsigned len);
+extern int eth_rebuild_header(struct sk_buff *skb);
+extern int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
+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);
+#define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1)
/**
- * is_zero_ether_addr - Determine if give Ethernet address is all
- * zeros.
+ * is_zero_ether_addr - Determine if give Ethernet address is all zeros.
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Return true if the address is all zeroes.
*/
static inline int is_zero_ether_addr(const u8 *addr)
{
}
/**
- * is_multicast_ether_addr - Determine if the given Ethernet address is a
- * multicast address.
- *
+ * is_multicast_ether_addr - Determine if the Ethernet address is a multicast.
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Return true if the address is a multicast address.
+ * By definition the broadcast address is also a multicast address.
*/
static inline int is_multicast_ether_addr(const u8 *addr)
{
- return ((addr[0] != 0xff) && (0x01 & addr[0]));
+ return (0x01 & addr[0]);
+}
+
+/**
+ * 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.
+ */
+static inline int is_local_ether_addr(const u8 *addr)
+{
+ return (0x02 & addr[0]);
+}
+
+/**
+ * is_broadcast_ether_addr - Determine if the Ethernet address is broadcast
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Return true if the address is the broadcast address.
+ */
+static inline int is_broadcast_ether_addr(const u8 *addr)
+{
+ return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;
}
/**
addr [0] &= 0xfe; /* clear multicast bit */
addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
}
+
+/**
+ * compare_ether_addr - Compare two Ethernet addresses
+ * @addr1: Pointer to a six-byte array containing the Ethernet address
+ * @addr2: Pointer other six-byte array containing the Ethernet address
+ *
+ * Compare two ethernet addresses, returns 0 if equal
+ */
+static inline unsigned compare_ether_addr(const u8 *addr1, const u8 *addr2)
+{
+ const u16 *a = (const u16 *) addr1;
+ const u16 *b = (const u16 *) 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
+}
+
+/**
+ * is_etherdev_addr - Tell if given Ethernet address belongs to the device.
+ * @dev: Pointer to a device structure
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Compare passed address with all addresses of the device. Return true if the
+ * address if one of the device addresses.
+ *
+ * Note that this function calls compare_ether_addr_64bits() so take care of
+ * the right padding.
+ */
+static inline bool is_etherdev_addr(const struct net_device *dev,
+ const u8 addr[6 + 2])
+{
+ struct netdev_hw_addr *ha;
+ int res = 1;
+
+ rcu_read_lock();
+ for_each_dev_addr(dev, ha) {
+ res = compare_ether_addr_64bits(addr, ha->addr);
+ if (!res)
+ break;
+ }
+ rcu_read_unlock();
+ return !res;
+}
#endif /* __KERNEL__ */
+/**
+ * compare_ether_header - Compare two Ethernet headers
+ * @a: Pointer to Ethernet header
+ * @b: Pointer to Ethernet header
+ *
+ * Compare two ethernet headers, returns 0 if equal.
+ * This assumes that the network header (i.e., IP header) is 4-byte
+ * aligned OR the platform can handle unaligned access. This is the
+ * case for all packets coming into netif_receive_skb or similar
+ * entry points.
+ */
+
+static inline int compare_ether_header(const void *a, const void *b)
+{
+ u32 *a32 = (u32 *)((u8 *)a + 2);
+ u32 *b32 = (u32 *)((u8 *)b + 2);
+
+ return (*(u16 *)a ^ *(u16 *)b) | (a32[0] ^ b32[0]) |
+ (a32[1] ^ b32[1]) | (a32[2] ^ b32[2]);
+}
+
#endif /* _LINUX_ETHERDEVICE_H */
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