diff options
| author |   Krzysztof Kozlowski <krzk@kernel.org> | 2018-07-23 18:20:20 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-07-25 13:40:39 -0700 |
| commit | d805f6a8682937d7f8136fe7561659b13f5aaa49 (patch) | |
| tree | 7dc2fa64d7202dc9c72dd60c971878ffbe2731e3 /drivers/net/ethernet/freescale/fs_enet | |
| parent | net: ethernet: freescale: Use generic CRC32 implementation (diff) | |
| download | linux-dev-d805f6a8682937d7f8136fe7561659b13f5aaa49.tar.xz linux-dev-d805f6a8682937d7f8136fe7561659b13f5aaa49.zip | |
net: ethernet: fs-enet: Use generic CRC32 implementation
Use generic kernel CRC32 implementation because it:
1. Should be faster (uses lookup tables),
2. Removes duplicated CRC generation code,
3. Uses well-proven algorithm instead of coding it one more time.
Suggested-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/fs_enet')
| -rw-r--r-- | drivers/net/ethernet/freescale/fs_enet/mac-fec.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c index 1fc27c97e3b2..99fe2c210d0f 100644 --- a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c +++ b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c @@ -18,6 +18,7 @@ #include <linux/string.h> #include <linux/ptrace.h> #include <linux/errno.h> +#include <linux/crc32.h> #include <linux/ioport.h> #include <linux/interrupt.h> #include <linux/delay.h> @@ -176,21 +177,10 @@ static void set_multicast_start(struct net_device *dev) static void set_multicast_one(struct net_device *dev, const u8 *mac) { struct fs_enet_private *fep = netdev_priv(dev); - int temp, hash_index, i, j; + int temp, hash_index; u32 crc, csrVal; - u8 byte, msb; - - crc = 0xffffffff; - for (i = 0; i < 6; i++) { - byte = mac[i]; - for (j = 0; j < 8; j++) { - msb = crc >> 31; - crc <<= 1; - if (msb ^ (byte & 0x1)) - crc ^= FEC_CRC_POLY; - byte >>= 1; - } - } + + crc = ether_crc(6, mac); temp = (crc & 0x3f) >> 1; hash_index = ((temp & 0x01) << 4) | |