diff options
| author | Stephen Hemminger <shemminger@osdl.org> | 2006-12-02 01:36:19 +0100 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-12-02 06:24:49 +0100 |
| commit | 57834ca152d5979f3f84f4e25f29f423e19d38fa (patch) | |
| tree | fbdf138a50b75161a4295b6712f2923d8b34168d /drivers | |
| parent | [PATCH] chelsio: cleanup pm3393 code (diff) | |
| download | linux-57834ca152d5979f3f84f4e25f29f423e19d38fa.tar.xz linux-57834ca152d5979f3f84f4e25f29f423e19d38fa.zip | |
[PATCH] chelsio: use standard CRC routines
Replace driver crc calculation with existing library.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/chelsio/pm3393.c | 31 |
2 files changed, 4 insertions, 28 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index ee391f29dae7..9de0eed6755b 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2360,6 +2360,7 @@ menu "Ethernet (10000 Mbit)" config CHELSIO_T1 tristate "Chelsio 10Gb Ethernet support" depends on PCI + select CRC32 help This driver supports Chelsio gigabit and 10-gigabit Ethernet cards. More information about adapter features and diff --git a/drivers/net/chelsio/pm3393.c b/drivers/net/chelsio/pm3393.c index a1d15eebe12c..63cabeb98afe 100644 --- a/drivers/net/chelsio/pm3393.c +++ b/drivers/net/chelsio/pm3393.c @@ -43,6 +43,8 @@ #include "elmer0.h" #include "suni1x10gexp_regs.h" +#include <linux/crc32.h> + #define OFFSET(REG_ADDR) (REG_ADDR << 2) /* Max frame size PM3393 can handle. Includes Ethernet header and CRC. */ @@ -345,33 +347,6 @@ static int pm3393_set_mtu(struct cmac *cmac, int mtu) return 0; } -static u32 calc_crc(u8 *b, int len) -{ - int i; - u32 crc = (u32)~0; - - /* calculate crc one bit at a time */ - while (len--) { - crc ^= *b++; - for (i = 0; i < 8; i++) { - if (crc & 0x1) - crc = (crc >> 1) ^ 0xedb88320; - else - crc = (crc >> 1); - } - } - - /* reverse bits */ - crc = ((crc >> 4) & 0x0f0f0f0f) | ((crc << 4) & 0xf0f0f0f0); - crc = ((crc >> 2) & 0x33333333) | ((crc << 2) & 0xcccccccc); - crc = ((crc >> 1) & 0x55555555) | ((crc << 1) & 0xaaaaaaaa); - /* swap bytes */ - crc = (crc >> 16) | (crc << 16); - crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00); - - return crc; -} - static int pm3393_set_rx_mode(struct cmac *cmac, struct t1_rx_mode *rm) { int enabled = cmac->instance->enabled & MAC_DIRECTION_RX; @@ -405,7 +380,7 @@ static int pm3393_set_rx_mode(struct cmac *cmac, struct t1_rx_mode *rm) u16 mc_filter[4] = { 0, }; while ((addr = t1_get_next_mcaddr(rm))) { - bit = (calc_crc(addr, ETH_ALEN) >> 23) & 0x3f; /* bit[23:28] */ + bit = (ether_crc(ETH_ALEN, addr) >> 23) & 0x3f; /* bit[23:28] */ mc_filter[bit >> 4] |= 1 << (bit & 0xf); } pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, mc_filter[0]); |