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[PATCH] amd8111e use standard CRC lib

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I noticed this driver (and several others) reinvent their own copy of the
existing CRC library. Don't have the hardware, but tested by extracting
code and comparing result.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Stephen Hemminger 2006-12-01 16:10:50 -08:00 committed by Jeff Garzik
parent b0a20ded56
commit 6b4bdde61b
2 changed files with 1 additions and 30 deletions
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27
drivers/net/amd8111e.c
View file

@ -1490,32 +1490,7 @@ static void amd8111e_read_regs(struct amd8111e_priv *lp, u32 *buf)
buf[12] = readl(mmio + STAT0);
}
/*
amd8111e crc generator implementation is different from the kernel
ether_crc() function.
*/
static int amd8111e_ether_crc(int len, char* mac_addr)
{
int i,byte;
unsigned char octet;
u32 crc= INITCRC;
for(byte=0; byte < len; byte++){
octet = mac_addr[byte];
for( i=0;i < 8; i++){
/*If the next bit form the input stream is 1,subtract the divisor (CRC32) from the dividend(crc).*/
if( (octet & 0x1) ^ (crc & 0x1) ){
crc >>= 1;
crc ^= CRC32;
}
else
crc >>= 1;
octet >>= 1;
}
}
return crc;
}
/*
This function sets promiscuos mode, all-multi mode or the multicast address
list to the device.
@ -1556,7 +1531,7 @@ static void amd8111e_set_multicast_list(struct net_device *dev)
mc_filter[1] = mc_filter[0] = 0;
for (i = 0, mc_ptr = dev->mc_list; mc_ptr && i < dev->mc_count;
i++, mc_ptr = mc_ptr->next) {
bit_num = ( amd8111e_ether_crc(ETH_ALEN,mc_ptr->dmi_addr) >> 26 ) & 0x3f;
bit_num = (ether_crc_le(ETH_ALEN, mc_ptr->dmi_addr) >> 26) & 0x3f;
mc_filter[bit_num >> 5] |= 1 << (bit_num & 31);
}
amd8111e_writeq(*(u64*)mc_filter,lp->mmio+ LADRF);

4
drivers/net/amd8111e.h
View file

@ -651,10 +651,6 @@ typedef enum {
/* driver ioctl parameters */
#define AMD8111E_REG_DUMP_LEN 13*sizeof(u32)
/* crc generator constants */
#define CRC32 0xedb88320
#define INITCRC 0xFFFFFFFF
/* amd8111e desriptor format */
struct amd8111e_tx_dr{