diff options
Diffstat (limited to 'hw/net/vhost_net.c')
| -rw-r--r-- | hw/net/vhost_net.c | 145 |
1 files changed, 19 insertions, 126 deletions
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 891f235a0a..540492b37d 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -16,7 +16,6 @@ #include "qemu/osdep.h" #include "net/net.h" #include "net/tap.h" -#include "net/vhost-user.h" #include "net/vhost-vdpa.h" #include "standard-headers/linux/vhost_types.h" @@ -36,94 +35,9 @@ #include "hw/virtio/virtio-bus.h" #include "linux-headers/linux/vhost.h" - -/* Features supported by host kernel. */ -static const int kernel_feature_bits[] = { - VIRTIO_F_NOTIFY_ON_EMPTY, - VIRTIO_RING_F_INDIRECT_DESC, - VIRTIO_RING_F_EVENT_IDX, - VIRTIO_NET_F_MRG_RXBUF, - VIRTIO_F_VERSION_1, - VIRTIO_NET_F_MTU, - VIRTIO_F_IOMMU_PLATFORM, - VIRTIO_F_RING_PACKED, - VIRTIO_F_RING_RESET, - VIRTIO_F_IN_ORDER, - VIRTIO_F_NOTIFICATION_DATA, - VIRTIO_NET_F_RSC_EXT, - VIRTIO_NET_F_HASH_REPORT, - VHOST_INVALID_FEATURE_BIT -}; - -/* Features supported by others. */ -static const int user_feature_bits[] = { - VIRTIO_F_NOTIFY_ON_EMPTY, - VIRTIO_F_NOTIFICATION_DATA, - VIRTIO_RING_F_INDIRECT_DESC, - VIRTIO_RING_F_EVENT_IDX, - - VIRTIO_F_ANY_LAYOUT, - VIRTIO_F_VERSION_1, - VIRTIO_NET_F_CSUM, - VIRTIO_NET_F_GUEST_CSUM, - VIRTIO_NET_F_GSO, - VIRTIO_NET_F_GUEST_TSO4, - VIRTIO_NET_F_GUEST_TSO6, - VIRTIO_NET_F_GUEST_ECN, - VIRTIO_NET_F_GUEST_UFO, - VIRTIO_NET_F_HOST_TSO4, - VIRTIO_NET_F_HOST_TSO6, - VIRTIO_NET_F_HOST_ECN, - VIRTIO_NET_F_HOST_UFO, - VIRTIO_NET_F_MRG_RXBUF, - VIRTIO_NET_F_MTU, - VIRTIO_F_IOMMU_PLATFORM, - VIRTIO_F_RING_PACKED, - VIRTIO_F_RING_RESET, - VIRTIO_F_IN_ORDER, - VIRTIO_NET_F_RSS, - VIRTIO_NET_F_RSC_EXT, - VIRTIO_NET_F_HASH_REPORT, - VIRTIO_NET_F_GUEST_USO4, - VIRTIO_NET_F_GUEST_USO6, - VIRTIO_NET_F_HOST_USO, - - /* This bit implies RARP isn't sent by QEMU out of band */ - VIRTIO_NET_F_GUEST_ANNOUNCE, - - VIRTIO_NET_F_MQ, - - VHOST_INVALID_FEATURE_BIT -}; - -static const int *vhost_net_get_feature_bits(struct vhost_net *net) -{ - const int *feature_bits = 0; - - switch (net->nc->info->type) { - case NET_CLIENT_DRIVER_TAP: - feature_bits = kernel_feature_bits; - break; - case NET_CLIENT_DRIVER_VHOST_USER: - feature_bits = user_feature_bits; - break; -#ifdef CONFIG_VHOST_NET_VDPA - case NET_CLIENT_DRIVER_VHOST_VDPA: - feature_bits = vdpa_feature_bits; - break; -#endif - default: - error_report("Feature bits not defined for this type: %d", - net->nc->info->type); - break; - } - - return feature_bits; -} - uint64_t vhost_net_get_features(struct vhost_net *net, uint64_t features) { - return vhost_get_features(&net->dev, vhost_net_get_feature_bits(net), + return vhost_get_features(&net->dev, net->feature_bits, features); } int vhost_net_get_config(struct vhost_net *net, uint8_t *config, @@ -140,7 +54,7 @@ int vhost_net_set_config(struct vhost_net *net, const uint8_t *data, void vhost_net_ack_features(struct vhost_net *net, uint64_t features) { net->dev.acked_features = net->dev.backend_features; - vhost_ack_features(&net->dev, vhost_net_get_feature_bits(net), features); + vhost_ack_features(&net->dev, net->feature_bits, features); } uint64_t vhost_net_get_max_queues(VHostNetState *net) @@ -155,11 +69,11 @@ uint64_t vhost_net_get_acked_features(VHostNetState *net) void vhost_net_save_acked_features(NetClientState *nc) { -#ifdef CONFIG_VHOST_NET_USER - if (nc->info->type == NET_CLIENT_DRIVER_VHOST_USER) { - vhost_user_save_acked_features(nc); + struct vhost_net *net = get_vhost_net(nc); + + if (net && net->save_acked_features) { + net->save_acked_features(nc); } -#endif } static void vhost_net_disable_notifiers_nvhosts(VirtIODevice *dev, @@ -329,6 +243,10 @@ struct vhost_net *vhost_net_init(VhostNetOptions *options) } net->nc = options->net_backend; net->dev.nvqs = options->nvqs; + net->feature_bits = options->feature_bits; + net->save_acked_features = options->save_acked_features; + net->max_tx_queue_size = options->max_tx_queue_size; + net->is_vhost_user = options->is_vhost_user; net->dev.max_queues = 1; net->dev.vqs = net->vqs; @@ -372,9 +290,8 @@ struct vhost_net *vhost_net_init(VhostNetOptions *options) } /* Set sane init value. Override when guest acks. */ -#ifdef CONFIG_VHOST_NET_USER - if (net->nc->info->type == NET_CLIENT_DRIVER_VHOST_USER) { - features = vhost_user_get_acked_features(net->nc); + if (options->get_acked_features) { + features = options->get_acked_features(net->nc); if (~net->dev.features & features) { fprintf(stderr, "vhost lacks feature mask 0x%" PRIx64 " for backend\n", @@ -382,7 +299,6 @@ struct vhost_net *vhost_net_init(VhostNetOptions *options) goto fail; } } -#endif vhost_net_ack_features(net, features); @@ -525,7 +441,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, * because vhost user doesn't interrupt masking/unmasking * properly. */ - if (net->nc->info->type == NET_CLIENT_DRIVER_VHOST_USER) { + if (net->is_vhost_user) { dev->use_guest_notifier_mask = false; } } @@ -551,7 +467,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, if (peer->vring_enable) { /* restore vring enable state */ - r = vhost_set_vring_enable(peer, peer->vring_enable); + r = vhost_net_set_vring_enable(peer, peer->vring_enable); if (r < 0) { goto err_guest_notifiers; @@ -649,44 +565,21 @@ void vhost_net_config_mask(VHostNetState *net, VirtIODevice *dev, bool mask) { vhost_config_mask(&net->dev, dev, mask); } + VHostNetState *get_vhost_net(NetClientState *nc) { - VHostNetState *vhost_net = 0; - if (!nc) { return 0; } - switch (nc->info->type) { - case NET_CLIENT_DRIVER_TAP: - vhost_net = tap_get_vhost_net(nc); - /* - * tap_get_vhost_net() can return NULL if a tap net-device backend is - * created with 'vhost=off' option, 'vhostforce=off' or no vhost or - * vhostforce or vhostfd options at all. Please see net_init_tap_one(). - * Hence, we omit the assertion here. - */ - break; -#ifdef CONFIG_VHOST_NET_USER - case NET_CLIENT_DRIVER_VHOST_USER: - vhost_net = vhost_user_get_vhost_net(nc); - assert(vhost_net); - break; -#endif -#ifdef CONFIG_VHOST_NET_VDPA - case NET_CLIENT_DRIVER_VHOST_VDPA: - vhost_net = vhost_vdpa_get_vhost_net(nc); - assert(vhost_net); - break; -#endif - default: - break; + if (nc->info->get_vhost_net) { + return nc->info->get_vhost_net(nc); } - return vhost_net; + return NULL; } -int vhost_set_vring_enable(NetClientState *nc, int enable) +int vhost_net_set_vring_enable(NetClientState *nc, int enable) { VHostNetState *net = get_vhost_net(nc); const VhostOps *vhost_ops = net->dev.vhost_ops; |