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[Qemu-devel] [PATCH 08/33] virtio-net: support longer header
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 08/33] virtio-net: support longer header |
Date: |
Thu, 4 Jun 2015 12:34:17 +0200 |
From: Cornelia Huck <address@hidden>
virtio-1 devices always use num_buffers in the header, even if
mergeable rx buffers have not been negotiated.
Signed-off-by: Cornelia Huck <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
hw/net/virtio-net.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index e2d2ab5..a01c4d1 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -367,15 +367,21 @@ static int peer_has_ufo(VirtIONet *n)
return n->has_ufo;
}
-static void virtio_net_set_mrg_rx_bufs(VirtIONet *n, int mergeable_rx_bufs)
+static void virtio_net_set_mrg_rx_bufs(VirtIONet *n, int mergeable_rx_bufs,
+ int version_1)
{
int i;
NetClientState *nc;
n->mergeable_rx_bufs = mergeable_rx_bufs;
- n->guest_hdr_len = n->mergeable_rx_bufs ?
- sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct
virtio_net_hdr);
+ if (version_1) {
+ n->guest_hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf);
+ } else {
+ n->guest_hdr_len = n->mergeable_rx_bufs ?
+ sizeof(struct virtio_net_hdr_mrg_rxbuf) :
+ sizeof(struct virtio_net_hdr);
+ }
for (i = 0; i < n->max_queues; i++) {
nc = qemu_get_subqueue(n->nic, i);
@@ -522,7 +528,9 @@ static void virtio_net_set_features(VirtIODevice *vdev,
uint64_t features)
virtio_net_set_mrg_rx_bufs(n,
__virtio_has_feature(features,
- VIRTIO_NET_F_MRG_RXBUF));
+ VIRTIO_NET_F_MRG_RXBUF),
+ __virtio_has_feature(features,
+ VIRTIO_F_VERSION_1));
if (n->has_vnet_hdr) {
n->curr_guest_offloads =
@@ -1375,7 +1383,8 @@ static int virtio_net_load_device(VirtIODevice *vdev,
QEMUFile *f,
qemu_get_buffer(f, n->mac, ETH_ALEN);
n->vqs[0].tx_waiting = qemu_get_be32(f);
- virtio_net_set_mrg_rx_bufs(n, qemu_get_be32(f));
+ virtio_net_set_mrg_rx_bufs(n, qemu_get_be32(f),
+ virtio_has_feature(vdev, VIRTIO_F_VERSION_1));
if (version_id >= 3)
n->status = qemu_get_be16(f);
@@ -1627,7 +1636,7 @@ static void virtio_net_device_realize(DeviceState *dev,
Error **errp)
n->vqs[0].tx_waiting = 0;
n->tx_burst = n->net_conf.txburst;
- virtio_net_set_mrg_rx_bufs(n, 0);
+ virtio_net_set_mrg_rx_bufs(n, 0, 0);
n->promisc = 1; /* for compatibility */
n->mac_table.macs = g_malloc0(MAC_TABLE_ENTRIES * ETH_ALEN);
--
1.8.3.1
- [Qemu-devel] [PATCH 01/33] virtio: 64bit features fixups., (continued)
- [Qemu-devel] [PATCH 01/33] virtio: 64bit features fixups., Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 09/33] virtio-net: enable virtio 1.0, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 10/33] vhost_net: add version_1 feature, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 03/33] virtio: allow virtio-1 queue layout, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 02/33] virtio: endianness checks for virtio 1.0 devices, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 17/33] virtio-pci: add flags to enable/disable legacy/modern, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 08/33] virtio-net: support longer header,
Gerd Hoffmann <=
- [Qemu-devel] [PATCH 15/33] virtio: add modern config accessors, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 14/33] virtio: generation counter support, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 21/33] virtio-pci: correctly set host notifiers for modern bar, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 16/33] virtio-pci: switch to modern accessors for 1.0, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 11/33] vhost: 64 bit features, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 22/33] virtio_balloon: header update, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 19/33] virtio-pci: change & document virtio pci bar layout., Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 29/33] virtio-pci: drop identical virtio_pci_cap, Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 26/33] virtio-pci: add virtio_pci_modern_region_map(), Gerd Hoffmann, 2015/06/04
- [Qemu-devel] [PATCH 06/33] virtio: allow to fail setting status, Gerd Hoffmann, 2015/06/04