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opencores_eth: use inline net_crc32() and bitshift instead of compute_mcast_idx()

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This makes it much easier to compare the multicast CRC calculation endian and
bitshift against the Linux driver implementation.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Mark Cave-Ayland 2017-12-15 18:41:50 +00:00 committed by Jason Wang
parent d00d6d0054
commit 308913bb43
1 changed files with 2 additions and 1 deletions
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3
hw/net/opencores_eth.c
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@ -36,6 +36,7 @@
#include "hw/net/mii.h" #include "hw/net/mii.h"
#include "hw/sysbus.h" #include "hw/sysbus.h"
#include "net/net.h" #include "net/net.h"
#include "net/eth.h"
#include "sysemu/sysemu.h" #include "sysemu/sysemu.h"
#include "trace.h" #include "trace.h"
@ -373,7 +374,7 @@ static ssize_t open_eth_receive(NetClientState *nc,
if (memcmp(buf, bcast_addr, sizeof(bcast_addr)) == 0) { if (memcmp(buf, bcast_addr, sizeof(bcast_addr)) == 0) {
miss = GET_REGBIT(s, MODER, BRO); miss = GET_REGBIT(s, MODER, BRO);
} else if ((buf[0] & 0x1) || GET_REGBIT(s, MODER, IAM)) { } else if ((buf[0] & 0x1) || GET_REGBIT(s, MODER, IAM)) {
unsigned mcast_idx = compute_mcast_idx(buf); unsigned mcast_idx = net_crc32(buf, ETH_ALEN) >> 26;
miss = !(s->regs[HASH0 + mcast_idx / 32] & miss = !(s->regs[HASH0 + mcast_idx / 32] &
(1 << (mcast_idx % 32))); (1 << (mcast_idx % 32)));
trace_open_eth_receive_mcast( trace_open_eth_receive_mcast(