[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 5/7] qemu:virtio-net: Enable filtering based on MAC,
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [PATCH 5/7] qemu:virtio-net: Enable filtering based on MAC, promisc, broadcast and allmulti |
Date: |
Tue, 20 Jan 2009 14:31:08 -0700 |
User-agent: |
StGIT/0.14.2 |
Make use of the new RX_MODE control virtqueue class by dropping
packets the guest doesn't want to see.
Signed-off-by: Alex Williamson <address@hidden>
---
Updated to look past vnet_hdr where necessary.
qemu/hw/virtio-net.c | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/qemu/hw/virtio-net.c b/qemu/hw/virtio-net.c
index d34c299..18877b4 100644
--- a/qemu/hw/virtio-net.c
+++ b/qemu/hw/virtio-net.c
@@ -293,6 +293,31 @@ 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};
+ uint8_t *ptr = (uint8_t *)buf;
+
+#ifdef TAP_VNET_HDR
+ if (tap_has_vnet_hdr(n->vc->vlan->first_client))
+ ptr += sizeof(struct virtio_net_hdr);
+#endif
+
+ if (n->promisc)
+ return 1;
+
+ if ((ptr[0] & 1) && n->allmulti)
+ return 1;
+
+ if (!memcmp(ptr, bcast, sizeof(bcast)))
+ return 1;
+
+ if (!memcmp(ptr, n->mac, ETH_ALEN))
+ return 1;
+
+ return 0;
+}
+
static void virtio_net_receive(void *opaque, const uint8_t *buf, int size)
{
VirtIONet *n = opaque;
@@ -302,6 +327,9 @@ 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);
- [Qemu-devel] [PATCH 0/7] qemu:virtio-net: Add MAC and VLAN filtering, Alex Williamson, 2009/01/16
- [Qemu-devel] [PATCH 1/7] qemu:virtio-net: Allow setting the MAC address via set_config, Alex Williamson, 2009/01/16
- [Qemu-devel] [PATCH 2/7] qemu:virtio-net: Define ETH_ALEN for use when manipulating MAC addresses, Alex Williamson, 2009/01/16
- [Qemu-devel] [PATCH 3/7] qemu:virtio-net: Add a virtqueue for control commands from the guest, Alex Williamson, 2009/01/16
- [Qemu-devel] [PATCH 4/7] qemu:virtio-net: Add promiscuous and all-multicast mode bits, Alex Williamson, 2009/01/16
- [Qemu-devel] [PATCH 5/7] qemu:virtio-net: Enable filtering based on MAC, promisc, broadcast and allmulti, Alex Williamson, 2009/01/16
- [Qemu-devel] [PATCH 5/7] qemu:virtio-net: Enable filtering based on MAC, promisc, broadcast and allmulti,
Alex Williamson <=
- [Qemu-devel] [PATCH 6/7] qemu:virtio-net: Add additional MACs via a filter table, Alex Williamson, 2009/01/16
- [Qemu-devel] [PATCH 7/7] qemu:virtio-net: Add VLAN filtering, Alex Williamson, 2009/01/16
- [Qemu-devel] Re: [PATCH 0/7] qemu:virtio-net: Add MAC and VLAN filtering, Mark McLoughlin, 2009/01/19
- [Qemu-devel] Re: [PATCH 0/7] qemu:virtio-net: Add MAC and VLAN filtering, Anthony Liguori, 2009/01/19