diff options
| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-05-01 19:47:44 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-05-01 19:47:44 +0400 |
| commit | bf61c8840efe60fd8f91446860b63338fb424158 (patch) | |
| tree | 7a71832407a4f0d6346db773343f4c3ae2257b19 /include/linux/etherdevice.h | |
| parent | 5846115b30f3a881e542c8bfde59a699c1c13740 (diff) | |
| parent | 0c6a61657da78098472fd0eb71cc01f2387fa1bb (diff) | |
| download | linux-bf61c8840efe60fd8f91446860b63338fb424158.tar.xz | |
Merge branch 'next' into for-linus
Prepare first set of updates for 3.10 merge window.
Diffstat (limited to 'include/linux/etherdevice.h')
| -rw-r--r-- | include/linux/etherdevice.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index b006ba0a9f42..c623861964e4 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -40,6 +40,8 @@ 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_prepare_mac_addr_change(struct net_device *dev, void *p); +extern void eth_commit_mac_addr_change(struct net_device *dev, void *p); 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); @@ -51,6 +53,26 @@ extern struct net_device *alloc_etherdev_mqs(int sizeof_priv, unsigned int txqs, #define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1) #define alloc_etherdev_mq(sizeof_priv, count) alloc_etherdev_mqs(sizeof_priv, count, count) +/* Reserved Ethernet Addresses per IEEE 802.1Q */ +static const u8 eth_reserved_addr_base[ETH_ALEN] __aligned(2) = +{ 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; + +/** + * is_link_local_ether_addr - Determine if given Ethernet address is link-local + * @addr: Pointer to a six-byte array containing the Ethernet address + * + * Return true if address is link local reserved addr (01:80:c2:00:00:0X) per + * IEEE 802.1Q 8.6.3 Frame filtering. + */ +static inline bool is_link_local_ether_addr(const u8 *addr) +{ + __be16 *a = (__be16 *)addr; + static const __be16 *b = (const __be16 *)eth_reserved_addr_base; + static const __be16 m = cpu_to_be16(0xfff0); + + return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | ((a[2] ^ b[2]) & m)) == 0; +} + /** * is_zero_ether_addr - Determine if give Ethernet address is all zeros. * @addr: Pointer to a six-byte array containing the Ethernet address @@ -172,7 +194,7 @@ static inline void eth_zero_addr(u8 *addr) */ static inline void eth_hw_addr_random(struct net_device *dev) { - dev->addr_assign_type |= NET_ADDR_RANDOM; + dev->addr_assign_type = NET_ADDR_RANDOM; eth_random_addr(dev->dev_addr); } |