[RFC 4/7] net/vhost-vdpa: Add the check for iommufd

[Cindy Lu <lulu@redhat.com>]

Add the check for object iommufd, if the iommfd enabled.
pass the information to vhost_vdpa.
vhost_vdpa dev start will check this bool and connect
to the iommufd

Signed-off-by: Cindy Lu <lulu@redhat.com>
---
 net/vhost-vdpa.c | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 1a13a34d35..d4819c28e1 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -659,16 +659,12 @@ static const VhostShadowVirtqueueOps vhost_vdpa_net_svq_ops = {
     .avail_handler = vhost_vdpa_net_handle_ctrl_avail,
 };
 
-static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
-                                       const char *device,
-                                       const char *name,
-                                       int vdpa_device_fd,
-                                       int queue_pair_index,
-                                       int nvqs,
-                                       bool is_datapath,
-                                       bool svq,
-                                       struct vhost_vdpa_iova_range iova_range,
-                                       VhostIOVATree *iova_tree)
+static NetClientState *
+net_vhost_vdpa_init(NetClientState *peer, const char *device, const char *name,
+                    int vdpa_device_fd, int queue_pair_index, int nvqs,
+                    bool is_datapath, bool svq, bool enable_iommufd,
+                    struct vhost_vdpa_iova_range iova_range,
+                    VhostIOVATree *iova_tree)
 {
     NetClientState *nc = NULL;
     VhostVDPAState *s;
@@ -691,6 +687,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
     s->vhost_vdpa.iova_range = iova_range;
     s->vhost_vdpa.shadow_data = svq;
     s->vhost_vdpa.iova_tree = iova_tree;
+    s->vhost_vdpa.enable_iommufd = enable_iommufd;
     if (!is_datapath) {
         s->cvq_cmd_out_buffer = qemu_memalign(qemu_real_host_page_size(),
                                             vhost_vdpa_net_cvq_cmd_page_len());
@@ -793,6 +790,12 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
         }
     }
 
+    bool enable_iommufd = false;
+    if (opts->iommufd) {
+        enable_iommufd = true;
+        printf("[%s] %d called\n", __func__, __LINE__);
+    }
+
     r = vhost_vdpa_get_features(vdpa_device_fd, &features, errp);
     if (unlikely(r < 0)) {
         goto err;
@@ -825,15 +828,15 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
     for (i = 0; i < queue_pairs; i++) {
         ncs[i] = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name,
                                      vdpa_device_fd, i, 2, true, opts->x_svq,
-                                     iova_range, iova_tree);
+                                     enable_iommufd, iova_range, iova_tree);
         if (!ncs[i])
             goto err;
     }
 
     if (has_cvq) {
-        nc = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name,
-                                 vdpa_device_fd, i, 1, false,
-                                 opts->x_svq, iova_range, iova_tree);
+        nc = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, vdpa_device_fd, i,
+                                 1, false, opts->x_svq, enable_iommufd,
+                                 iova_range, iova_tree);
         if (!nc)
             goto err;
     }
-- 
2.34.3