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[Qemu-devel] [PATCHv2 5/5] sunhme: switch sunhme_receive() over to use n
From: |
Mark Cave-Ayland |
Subject: |
[Qemu-devel] [PATCHv2 5/5] sunhme: switch sunhme_receive() over to use net_crc32_le() |
Date: |
Tue, 5 Dec 2017 08:17:44 +0000 |
Signed-off-by: Mark Cave-Ayland <address@hidden>
---
hw/net/sunhme.c | 25 +------------------------
1 file changed, 1 insertion(+), 24 deletions(-)
diff --git a/hw/net/sunhme.c b/hw/net/sunhme.c
index b1efa1b88d..df66e2630c 100644
--- a/hw/net/sunhme.c
+++ b/hw/net/sunhme.c
@@ -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, 6) >> 26;
if (!(s->macregs[(HME_MACI_HASHTAB0 >> 2) - (mcast_idx >> 4)] &
(1 << (mcast_idx & 0xf)))) {
/* Didn't match hash filter */
--
2.11.0
- Re: [Qemu-devel] [PATCHv2 2/5] net: introduce net_crc32_le() function, (continued)