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ne2000: 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 18:41:53 +00:00 committed by Jason Wang
parent 4227be63f0
commit 084e2b111b
1 changed files with 3 additions and 1 deletions
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4
hw/net/ne2000.c
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@ -23,6 +23,8 @@
*/ */
#include "qemu/osdep.h" #include "qemu/osdep.h"
#include "hw/pci/pci.h" #include "hw/pci/pci.h"
#include "net/net.h"
#include "net/eth.h"
#include "ne2000.h" #include "ne2000.h"
#include "hw/loader.h" #include "hw/loader.h"
#include "sysemu/sysemu.h" #include "sysemu/sysemu.h"
@ -199,7 +201,7 @@ ssize_t ne2000_receive(NetClientState *nc, const uint8_t *buf, size_t size_)
/* multicast */ /* multicast */
if (!(s->rxcr & 0x08)) if (!(s->rxcr & 0x08))
return size; return size;
mcast_idx = compute_mcast_idx(buf); mcast_idx = net_crc32(buf, ETH_ALEN) >> 26;
if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))))
return size; return size;
} else if (s->mem[0] == buf[0] && } else if (s->mem[0] == buf[0] &&