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[Qemu-devel] [PATCH 3/7] virtio-net: reorganize receive_filter()
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [PATCH 3/7] virtio-net: reorganize receive_filter() |
Date: |
Fri, 05 Jun 2009 14:47:02 -0600 |
User-agent: |
StGIT/0.14.2 |
Reorganize receive_filter to better handle the split between
unicast and multicast filtering. This allows us to skip the
broadcast check on unicast packets and leads to more opportunities
for optimization.
Signed-off-by: Alex Williamson <address@hidden>
---
hw/virtio-net.c | 19 +++++++++++--------
1 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index de5a59f..395b735 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -344,14 +344,17 @@ static int receive_filter(VirtIONet *n, const uint8_t
*buf, int size)
return 0;
}
- 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;
+ if (ptr[0] & 1) { // multicast
+ if (!memcmp(ptr, bcast, sizeof(bcast))) {
+ return 1;
+ } else if (n->allmulti) {
+ return 1;
+ }
+ } else { // unicast
+ if (!memcmp(ptr, n->mac, ETH_ALEN)) {
+ return 1;
+ }
+ }
for (i = 0; i < n->mac_table.in_use; i++) {
if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN))
- [Qemu-devel] [PATCH 0/7] virtio-net: Filter cleanup/improvements, Alex Williamson, 2009/06/05
- [Qemu-devel] [PATCH 1/7] virtio-net: Add version_id 7 placeholder for vnet header support, Alex Williamson, 2009/06/05
- [Qemu-devel] [PATCH 2/7] virtio-net: Use a byte to store RX mode flags, Alex Williamson, 2009/06/05
- [Qemu-devel] [PATCH 3/7] virtio-net: reorganize receive_filter(),
Alex Williamson <=
- [Qemu-devel] [PATCH 4/7] virtio-net: Fix MAC filter overflow handling, Alex Williamson, 2009/06/05
- [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Alex Williamson, 2009/06/05
- Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Michael S. Tsirkin, 2009/06/06
- Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Alex Williamson, 2009/06/08
- Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Anthony Liguori, 2009/06/08
- Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Daniel P. Berrange, 2009/06/08
- Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Anthony Liguori, 2009/06/08
- Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Daniel P. Berrange, 2009/06/09
- Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls, Jamie Lokier, 2009/06/09
- [Qemu-devel] Re: [PATCH 6/7] virtio-net: Add new RX filter controls, Jan Kiszka, 2009/06/09