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| -rw-r--r-- | include/linux/etherdevice.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index f3301140d28..afacf8576d0 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -225,6 +225,26 @@ static inline unsigned compare_ether_addr_64bits(const u8 addr1[6+2], } /** + * ether_addr_equal_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 true if equal, false otherwise. + * + * The function doesn't need any conditional branches and possibly uses + * 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 bool ether_addr_equal_64bits(const u8 addr1[6+2], + const u8 addr2[6+2]) +{ + return !compare_ether_addr_64bits(addr1, addr2); +} + +/** * 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 |