misc: move include files to include/qemu/

[qemu.git] / hw / vhost_net.c

diff --git a/hw/vhost_net.c b/hw/vhost_net.c
index 2e292eea260dd56955200d80f5cb9154f54f0e18..ae2785d83fc17dffe8edc4572e2a77e10ee68c07 100644 (file)
--- a/hw/vhost_net.c
+++ b/hw/vhost_net.c
@@ -8,19 +8,22 @@
  *
  * This work is licensed under the terms of the GNU GPL, version 2.  See
  * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
  */
 
-#include "net.h"
+#include "net/net.h"
 #include "net/tap.h"
 
 #include "virtio-net.h"
 #include "vhost_net.h"
+#include "qemu/error-report.h"
 
 #include "config.h"
 
 #ifdef CONFIG_VHOST_NET
 #include <linux/vhost.h>
-#include <sys/eventfd.h>
 #include <sys/socket.h>
 #include <linux/kvm.h>
 #include <fcntl.h>
@@ -39,7 +42,7 @@ struct vhost_net {
     struct vhost_dev dev;
     struct vhost_virtqueue vqs[2];
     int backend;
-    VLANClientState *vc;
+    NetClientState *nc;
 };
 
 unsigned vhost_net_get_features(struct vhost_net *net, unsigned features)
@@ -51,7 +54,12 @@ unsigned vhost_net_get_features(struct vhost_net *net, unsigned features)
     if (!(net->dev.features & (1 << VIRTIO_RING_F_INDIRECT_DESC))) {
         features &= ~(1 << VIRTIO_RING_F_INDIRECT_DESC);
     }
-    features &= ~(1 << VIRTIO_NET_F_MRG_RXBUF);
+    if (!(net->dev.features & (1 << VIRTIO_RING_F_EVENT_IDX))) {
+        features &= ~(1 << VIRTIO_RING_F_EVENT_IDX);
+    }
+    if (!(net->dev.features & (1 << VIRTIO_NET_F_MRG_RXBUF))) {
+        features &= ~(1 << VIRTIO_NET_F_MRG_RXBUF);
+    }
     return features;
 }
 
@@ -64,12 +72,18 @@ void vhost_net_ack_features(struct vhost_net *net, unsigned features)
     if (features & (1 << VIRTIO_RING_F_INDIRECT_DESC)) {
         net->dev.acked_features |= (1 << VIRTIO_RING_F_INDIRECT_DESC);
     }
+    if (features & (1 << VIRTIO_RING_F_EVENT_IDX)) {
+        net->dev.acked_features |= (1 << VIRTIO_RING_F_EVENT_IDX);
+    }
+    if (features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
+        net->dev.acked_features |= (1 << VIRTIO_NET_F_MRG_RXBUF);
+    }
 }
 
-static int vhost_net_get_fd(VLANClientState *backend)
+static int vhost_net_get_fd(NetClientState *backend)
 {
     switch (backend->info->type) {
-    case NET_CLIENT_TYPE_TAP:
+    case NET_CLIENT_OPTIONS_KIND_TAP:
         return tap_get_fd(backend);
     default:
         fprintf(stderr, "vhost-net requires tap backend\n");
@@ -77,10 +91,11 @@ static int vhost_net_get_fd(VLANClientState *backend)
     }
 }
 
-struct vhost_net *vhost_net_init(VLANClientState *backend, int devfd)
+struct vhost_net *vhost_net_init(NetClientState *backend, int devfd,
+                                 bool force)
 {
     int r;
-    struct vhost_net *net = qemu_malloc(sizeof *net);
+    struct vhost_net *net = g_malloc(sizeof *net);
     if (!backend) {
         fprintf(stderr, "vhost-net requires backend to be setup\n");
         goto fail;
@@ -89,18 +104,22 @@ struct vhost_net *vhost_net_init(VLANClientState *backend, int devfd)
     if (r < 0) {
         goto fail;
     }
-    net->vc = backend;
+    net->nc = backend;
     net->dev.backend_features = tap_has_vnet_hdr(backend) ? 0 :
         (1 << VHOST_NET_F_VIRTIO_NET_HDR);
     net->backend = r;
 
-    r = vhost_dev_init(&net->dev, devfd);
+    r = vhost_dev_init(&net->dev, devfd, "/dev/vhost-net", force);
     if (r < 0) {
         goto fail;
     }
+    if (!tap_has_vnet_hdr_len(backend,
+                              sizeof(struct virtio_net_hdr_mrg_rxbuf))) {
+        net->dev.features &= ~(1 << VIRTIO_NET_F_MRG_RXBUF);
+    }
     if (~net->dev.features & net->dev.backend_features) {
-        fprintf(stderr, "vhost lacks feature mask %llu for backend\n",
-                ~net->dev.features & net->dev.backend_features);
+        fprintf(stderr, "vhost lacks feature mask %" PRIu64 " for backend\n",
+                (uint64_t)(~net->dev.features & net->dev.backend_features));
         vhost_dev_cleanup(&net->dev);
         goto fail;
     }
@@ -109,10 +128,15 @@ struct vhost_net *vhost_net_init(VLANClientState *backend, int devfd)
     vhost_net_ack_features(net, 0);
     return net;
 fail:
-    qemu_free(net);
+    g_free(net);
     return NULL;
 }
 
+bool vhost_net_query(VHostNetState *net, VirtIODevice *dev)
+{
+    return vhost_dev_query(&net->dev, dev);
+}
+
 int vhost_net_start(struct vhost_net *net,
                     VirtIODevice *dev)
 {
@@ -121,12 +145,18 @@ int vhost_net_start(struct vhost_net *net,
 
     net->dev.nvqs = 2;
     net->dev.vqs = net->vqs;
+
+    r = vhost_dev_enable_notifiers(&net->dev, dev);
+    if (r < 0) {
+        goto fail_notifiers;
+    }
+
     r = vhost_dev_start(&net->dev, dev);
     if (r < 0) {
-        return r;
+        goto fail_start;
     }
 
-    net->vc->info->poll(net->vc, false);
+    net->nc->info->poll(net->nc, false);
     qemu_set_fd_handler(net->backend, NULL, NULL, NULL);
     file.fd = net->backend;
     for (file.index = 0; file.index < net->dev.nvqs; ++file.index) {
@@ -139,12 +169,15 @@ int vhost_net_start(struct vhost_net *net,
     return 0;
 fail:
     file.fd = -1;
-    while (--file.index >= 0) {
+    while (file.index-- > 0) {
         int r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
         assert(r >= 0);
     }
-    net->vc->info->poll(net->vc, true);
+    net->nc->info->poll(net->nc, true);
     vhost_dev_stop(&net->dev, dev);
+fail_start:
+    vhost_dev_disable_notifiers(&net->dev, dev);
+fail_notifiers:
     return r;
 }
 
@@ -157,25 +190,33 @@ void vhost_net_stop(struct vhost_net *net,
         int r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
         assert(r >= 0);
     }
-    net->vc->info->poll(net->vc, true);
+    net->nc->info->poll(net->nc, true);
     vhost_dev_stop(&net->dev, dev);
+    vhost_dev_disable_notifiers(&net->dev, dev);
 }
 
 void vhost_net_cleanup(struct vhost_net *net)
 {
     vhost_dev_cleanup(&net->dev);
-    qemu_free(net);
+    g_free(net);
 }
 #else
-struct vhost_net *vhost_net_init(VLANClientState *backend, int devfd)
+struct vhost_net *vhost_net_init(NetClientState *backend, int devfd,
+                                 bool force)
 {
-       return NULL;
+    error_report("vhost-net support is not compiled in");
+    return NULL;
+}
+
+bool vhost_net_query(VHostNetState *net, VirtIODevice *dev)
+{
+    return false;
 }
 
 int vhost_net_start(struct vhost_net *net,
                    VirtIODevice *dev)
 {
-       return -ENOSYS;
+    return -ENOSYS;
 }
 void vhost_net_stop(struct vhost_net *net,
                    VirtIODevice *dev)
@@ -188,7 +229,7 @@ void vhost_net_cleanup(struct vhost_net *net)
 
 unsigned vhost_net_get_features(struct vhost_net *net, unsigned features)
 {
-       return features;
+    return features;
 }
 void vhost_net_ack_features(struct vhost_net *net, unsigned features)
 {