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[PATCH for 8.0 v8 06/12] vdpa: extract vhost_vdpa_svq_allocate_iova_tree
From: |
Eugenio Pérez |
Subject: |
[PATCH for 8.0 v8 06/12] vdpa: extract vhost_vdpa_svq_allocate_iova_tree |
Date: |
Thu, 24 Nov 2022 16:51:52 +0100 |
It can be allocated either if all virtqueues must be shadowed or if
vdpa-net detects it can shadow only cvq.
Extract in its own function so we can reuse it.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
net/vhost-vdpa.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 88e0eec5fa..9ee3bc4cd3 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -240,6 +240,22 @@ static NetClientInfo net_vhost_vdpa_info = {
.check_peer_type = vhost_vdpa_check_peer_type,
};
+static int vhost_vdpa_get_iova_range(int fd,
+ struct vhost_vdpa_iova_range *iova_range)
+{
+ int ret = ioctl(fd, VHOST_VDPA_GET_IOVA_RANGE, iova_range);
+
+ return ret < 0 ? -errno : 0;
+}
+
+static VhostIOVATree *vhost_vdpa_svq_allocate_iova_tree(int vdpa_device_fd)
+{
+ struct vhost_vdpa_iova_range iova_range;
+
+ vhost_vdpa_get_iova_range(vdpa_device_fd, &iova_range);
+ return vhost_iova_tree_new(iova_range.first, iova_range.last);
+}
+
static void vhost_vdpa_cvq_unmap_buf(struct vhost_vdpa *v, void *addr)
{
VhostIOVATree *tree = v->iova_tree;
@@ -587,14 +603,6 @@ static NetClientState *net_vhost_vdpa_init(NetClientState
*peer,
return nc;
}
-static int vhost_vdpa_get_iova_range(int fd,
- struct vhost_vdpa_iova_range *iova_range)
-{
- int ret = ioctl(fd, VHOST_VDPA_GET_IOVA_RANGE, iova_range);
-
- return ret < 0 ? -errno : 0;
-}
-
static int vhost_vdpa_get_features(int fd, uint64_t *features, Error **errp)
{
int ret = ioctl(fd, VHOST_GET_FEATURES, features);
@@ -690,14 +698,11 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char
*name,
}
if (opts->x_svq) {
- struct vhost_vdpa_iova_range iova_range;
-
if (!vhost_vdpa_net_valid_svq_features(features, errp)) {
goto err_svq;
}
- vhost_vdpa_get_iova_range(vdpa_device_fd, &iova_range);
- iova_tree = vhost_iova_tree_new(iova_range.first, iova_range.last);
+ iova_tree = vhost_vdpa_svq_allocate_iova_tree(vdpa_device_fd);
}
ncs = g_malloc0(sizeof(*ncs) * queue_pairs);
--
2.31.1
- [PATCH for 8.0 v8 00/12] ASID support in vhost-vdpa net, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 01/12] vdpa: use v->shadow_vqs_enabled in vhost_vdpa_svqs_start & stop, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 02/12] vhost: set SVQ device call handler at SVQ start, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 03/12] vhost: allocate SVQ device file descriptors at device start, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 04/12] vhost: move iova_tree set to vhost_svq_start, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 05/12] vdpa: add vhost_vdpa_net_valid_svq_features, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 06/12] vdpa: extract vhost_vdpa_svq_allocate_iova_tree,
Eugenio Pérez <=
- [PATCH for 8.0 v8 08/12] vdpa: allocate SVQ array unconditionally, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 07/12] vdpa: move SVQ vring features check to net/, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 10/12] vdpa: store x-svq parameter in VhostVDPAState, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 09/12] vdpa: add asid parameter to vhost_vdpa_dma_map/unmap, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 11/12] vdpa: add shadow_data to vhost_vdpa, Eugenio Pérez, 2022/11/24
- [PATCH for 8.0 v8 12/12] vdpa: always start CVQ in SVQ mode if possible, Eugenio Pérez, 2022/11/24