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sunhme: switch sunhme over to use net_crc32_le()

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Instead of sunhme_crc32_le() using its own implementation, we can simply call
net_crc32_le() directly and apply the bit shift inline.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Mark Cave-Ayland 2017-12-15 18:41:47 +00:00 committed by Jason Wang
parent 7c0348bd63
commit a89a6b052a
1 changed files with 1 additions and 24 deletions
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25
hw/net/sunhme.c
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@ -698,29 +698,6 @@ static inline void sunhme_set_rx_ring_nr(SunHMEState *s, int i)
s->erxregs[HME_ERXI_RING >> 2] = ring;
}
#define POLYNOMIAL_LE 0xedb88320
static uint32_t sunhme_crc32_le(const uint8_t *p, int len)
{
uint32_t crc;
int carry, i, j;
uint8_t b;
crc = 0xffffffff;
for (i = 0; i < len; i++) {
b = *p++;
for (j = 0; j < 8; j++) {
carry = (crc & 0x1) ^ (b & 0x01);
crc >>= 1;
b >>= 1;
if (carry) {
crc = crc ^ POLYNOMIAL_LE;
}
}
}
return crc;
}
#define MIN_BUF_SIZE 60
static ssize_t sunhme_receive(NetClientState *nc, const uint8_t *buf,
@ -761,7 +738,7 @@ static ssize_t sunhme_receive(NetClientState *nc, const uint8_t *buf,
trace_sunhme_rx_filter_bcast_match();
} else if (s->macregs[HME_MACI_RXCFG >> 2] & HME_MAC_RXCFG_HENABLE) {
/* Didn't match local address, check hash filter */
int mcast_idx = sunhme_crc32_le(buf, 6) >> 26;
int mcast_idx = net_crc32_le(buf, ETH_ALEN) >> 26;
if (!(s->macregs[(HME_MACI_HASHTAB0 >> 2) - (mcast_idx >> 4)] &
(1 << (mcast_idx & 0xf)))) {
/* Didn't match hash filter */