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| author | Duan Jiong <djduanjiong@gmail.com> | 2012-09-08 20:32:28 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-09-10 23:49:54 +0400 |
| commit | 6d57e9078e880a3dd232d579f42ac437a8f1ef7b (patch) | |
| tree | 201dfec28dcc0d4c7fb4389ef0a0c57140e3f732 /include/linux/etherdevice.h | |
| parent | 82346a7b6a14793a48cc7a0692a007daf0843f99 (diff) | |
| download | linux-6d57e9078e880a3dd232d579f42ac437a8f1ef7b.tar.xz | |
etherdevice: introduce help function eth_zero_addr()
a lot of code has either the memset or an inefficient copy
from a static array that contains the all-zeros Ethernet address.
Introduce help function eth_zero_addr() to fill an address with
all zeros, making the code clearer and allowing us to get rid of
some constant arrays.
Signed-off-by: Duan Jiong <djduanjiong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/etherdevice.h')
| -rw-r--r-- | include/linux/etherdevice.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index d426336d92d9..b006ba0a9f42 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -151,6 +151,17 @@ static inline void eth_broadcast_addr(u8 *addr) } /** + * eth_zero_addr - Assign zero address + * @addr: Pointer to a six-byte array containing the Ethernet address + * + * Assign the zero address to the given address array. + */ +static inline void eth_zero_addr(u8 *addr) +{ + memset(addr, 0x00, ETH_ALEN); +} + +/** * eth_hw_addr_random - Generate software assigned random Ethernet and * set device flag * @dev: pointer to net_device structure |