search for: device_fd

...-- Ga?l Roualland -+- gael.roualland@oleane.net -------------- next part -------------- diff -ru tinc-1.0.4/src/bsd/device.c tinc-1.0.4.gr/src/bsd/device.c --- tinc-1.0.4/src/bsd/device.c Wed May 4 18:57:55 2005 +++ tinc-1.0.4.gr/src/bsd/device.c Wed May 17 22:47:27 2006 @@ -38,6 +38,10 @@ int device_fd = -1; char *device; + +static char device_buf[256]; +#define DEVICE_TRIES_MAX 255 + char *iface; char *device_info; static int device_total_in = 0; @@ -60,8 +64,31 @@ iface = rindex(device, '/') ? rindex(device, '/') + 1 : device; if((device_fd = open(device, O_RDWR | O_N...

This RFC is to demonstrate below ideas, a) Build vhost-mdev on top of the same abstraction defined in the virtio-mdev series [1]; b) Introduce /dev/vhost-mdev to do vhost ioctls and support setting mdev device as backend; Now the userspace API looks like this: - Userspace generates a compatible mdev device; - Userspace opens this mdev device with VFIO API (including doing IOMMU

This RFC is to demonstrate below ideas, a) Build vhost-mdev on top of the same abstraction defined in the virtio-mdev series [1]; b) Introduce /dev/vhost-mdev to do vhost ioctls and support setting mdev device as backend; Now the userspace API looks like this: - Userspace generates a compatible mdev device; - Userspace opens this mdev device with VFIO API (including doing IOMMU

...uests in above structure. Each message will be written to or read from this region at offset 0: int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; int ret; ret = pwrite64(vfio->device_fd, op, count, vfio->bar0_offset); if (ret != count) return -1; return 0; } int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; uint64_t request = op->request; int ret; ret...

...uests in above structure. Each message will be written to or read from this region at offset 0: int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; int ret; ret = pwrite64(vfio->device_fd, op, count, vfio->bar0_offset); if (ret != count) return -1; return 0; } int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; uint64_t request = op->request; int ret; ret...

...ion at offset 0: > > > > int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) > > { > > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; > > struct vhost_vfio *vfio = dev->opaque; > > int ret; > > > > ret = pwrite64(vfio->device_fd, op, count, vfio->bar0_offset); > > if (ret != count) > > return -1; > > > > return 0; > > } > > > > int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) > > { > > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; >...

...ion at offset 0: > > > > int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) > > { > > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; > > struct vhost_vfio *vfio = dev->opaque; > > int ret; > > > > ret = pwrite64(vfio->device_fd, op, count, vfio->bar0_offset); > > if (ret != count) > > return -1; > > > > return 0; > > } > > > > int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) > > { > > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; >...

...e will be written to or read from this region at offset 0: > > int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) > { > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; > struct vhost_vfio *vfio = dev->opaque; > int ret; > > ret = pwrite64(vfio->device_fd, op, count, vfio->config_offset); > if (ret != count) > return -1; > > return 0; > } > > int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) > { > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; > struct vhost_vfio *vfio = dev->opaque; &g...

...uests in above structure. Each message will be written to or read from this region at offset 0: int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; int ret; ret = pwrite64(vfio->device_fd, op, count, vfio->config_offset); if (ret != count) return -1; return 0; } int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; uint64_t request = op->request; int ret; re...

...uests in above structure. Each message will be written to or read from this region at offset 0: int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; int ret; ret = pwrite64(vfio->device_fd, op, count, vfio->config_offset); if (ret != count) return -1; return 0; } int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) { int count = VHOST_VFIO_OP_HDR_SIZE + op->size; struct vhost_vfio *vfio = dev->opaque; uint64_t request = op->request; int ret; re...

...nd))) { + r = -EFAULT; + goto err; + } + + file = fget(backend.group_fd); + if (!file) { + r = -EBADF; + goto err; + } + + group = vfio_group_get_external_user(file); + fput(file); + if (IS_ERR(group)) { + r = PTR_ERR(group); + goto err; + } + + device = vfio_device_get_from_fd(group, backend.device_fd); + if (!IS_ERR(device)) { + r = PTR_ERR(device); + goto err_put_group; + } + + if (!vfio_device_ops_match(device, &vfio_mdev_dev_ops)) { + r = -EINVAL; + goto err_put_device; + } + + mdev = vfio_device_data(m->vfio_device); + + magic = virtio_mdev_readl(mdev, VIRTIO_MDEV_MAGIC_VALUE); +...

...gt;vhost_vdpa.dev; > if (dev->vq_index + dev->nvqs == dev->vq_index_end) { > g_clear_pointer(&s->vhost_vdpa.iova_tree, vhost_iova_tree_delete); > @@ -741,6 +816,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, > s->vhost_vdpa.device_fd = vdpa_device_fd; > s->vhost_vdpa.index = queue_pair_index; > s->always_svq = svq; > + s->migration_state.notify = vdpa_net_migration_state_notifier; > s->vhost_vdpa.shadow_vqs_enabled = svq; > s->vhost_vdpa.iova_range = iova_range; >...

...l be written to or read from this > region at offset 0: > > int vhost_vfio_write(struct vhost_dev *dev, struct vhost_vfio_op *op) > { > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; > struct vhost_vfio *vfio = dev->opaque; > int ret; > > ret = pwrite64(vfio->device_fd, op, count, vfio->bar0_offset); > if (ret != count) > return -1; > > return 0; > } > > int vhost_vfio_read(struct vhost_dev *dev, struct vhost_vfio_op *op) > { > int count = VHOST_VFIO_OP_HDR_SIZE + op->size; > struct vhost_vfio *vfio = dev->opaque; >...

...group_fd); > + if (!file) { > + r = -EBADF; > + goto err; > + } > + > + group = vfio_group_get_external_user(file); > + fput(file); > + if (IS_ERR(group)) { > + r = PTR_ERR(group); > + goto err; > + } > + > + device = vfio_device_get_from_fd(group, backend.device_fd); > + if (!IS_ERR(device)) { > + r = PTR_ERR(device); > + goto err_put_group; > + } > + > + if (!vfio_device_ops_match(device, &vfio_mdev_dev_ops)) { > + r = -EINVAL; > + goto err_put_device; > + } It looks to me that we can avoid to expose vfio_mdev_dev_ops her...

.../May/2007:13:27:58 -0300] Discarding unused printer-state-changed event... D [18/May/2007:13:27:58 -0300] [Job 21957] Connected to 192.168.1.55:9100 (IPv4)... D [18/May/2007:13:27:58 -0300] Discarding unused job-progress event... D [18/May/2007:13:27:58 -0300] [Job 21957] backendRunLoop(print_fd=4, device_fd=5, use_bc=1) D [18/May/2007:13:27:58 -0300] [Job 21957] Read 8192 bytes of print data... D [18/May/2007:13:27:58 -0300] [Job 21957] Wrote 8192 bytes of print data... D [18/May/2007:13:27:58 -0300] [Job 21957] Read 8192 bytes of print data... D [18/May/2007:13:27:58 -0300] cupsdAcceptClient: 9 from...