Revision 3831ab20 hw/virtio-net.c
| b/hw/virtio-net.c | ||
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| 222 | 222 |
return offset; |
| 223 | 223 |
} |
| 224 | 224 |
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static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) |
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{
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static const uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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uint8_t *ptr = (uint8_t *)buf; |
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if (n->promisc) |
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return 1; |
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#ifdef TAP_VNET_HDR |
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if (tap_has_vnet_hdr(n->vc->vlan->first_client)) |
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ptr += sizeof(struct virtio_net_hdr); |
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#endif |
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if ((ptr[0] & 1) && n->allmulti) |
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return 1; |
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if (!memcmp(ptr, bcast, sizeof(bcast))) |
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return 1; |
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if (!memcmp(ptr, n->mac, ETH_ALEN)) |
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return 1; |
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return 0; |
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} |
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| 225 | 250 |
static void virtio_net_receive(void *opaque, const uint8_t *buf, int size) |
| 226 | 251 |
{
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| 227 | 252 |
VirtIONet *n = opaque; |
| ... | ... | |
| 231 | 256 |
if (!do_virtio_net_can_receive(n, size)) |
| 232 | 257 |
return; |
| 233 | 258 |
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if (!receive_filter(n, buf, size)) |
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return; |
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| 234 | 262 |
/* hdr_len refers to the header we supply to the guest */ |
| 235 | 263 |
hdr_len = n->mergeable_rx_bufs ? |
| 236 | 264 |
sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr); |
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