Signed-off-by: Alex Williamson <alex.william...@hp.com> --- qemu/hw/virtio-net.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/qemu/hw/virtio-net.c b/qemu/hw/virtio-net.c index c5d9952..99e582f 100644 --- a/qemu/hw/virtio-net.c +++ b/qemu/hw/virtio-net.c @@ -273,6 +273,25 @@ static int receive_header(VirtIONet *n, struct iovec *iov, int iovcnt, return offset; } +static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) +{ + static uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + + if (n->promisc) + return 1; + + if ((buf[0] & 1) && n->allmulti) + return 1; + + if (!memcmp(buf, bcast, sizeof(bcast))) + return 1; + + if (!memcmp(buf, n->mac, 6)) + return 1; + + return 0; +} + static void virtio_net_receive(void *opaque, const uint8_t *buf, int size) { VirtIONet *n = opaque; @@ -282,6 +301,9 @@ static void virtio_net_receive(void *opaque, const uint8_t *buf, int size) if (!do_virtio_net_can_receive(n, size)) return; + if (!receive_filter(n, buf, size)) + return; + /* hdr_len refers to the header we supply to the guest */ hdr_len = n->mergeable_rx_bufs ? sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr); -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html