diff options
| author | Jason Wang <jasowang@redhat.com> | 2022-09-27 15:48:09 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-10-07 09:32:40 -0400 |
| commit | 477f71971422fb225337b30f7b79363387b1d78c (patch) | |
| tree | 7fe1d2b79eee34e195293e47854d5cc2cf9e1211 /drivers/vdpa | |
| parent | 90fea5a800c3dd80fb8ad9a02929bcef5fde42b8 (diff) | |
| download | linux-stable-477f71971422fb225337b30f7b79363387b1d78c.tar.gz linux-stable-477f71971422fb225337b30f7b79363387b1d78c.tar.bz2 linux-stable-477f71971422fb225337b30f7b79363387b1d78c.zip | |
vdpa_sim_net: support feature provisioning
This patch implements features provisioning for vdpa_sim_net.
1) validating the provisioned features to be a subset of the parent
features.
2) clearing the features that is not wanted by the userspace
For example:
vdpasim_net:
supported_classes net
max_supported_vqs 3
dev_features MTU MAC CTRL_VQ CTRL_MAC_ADDR ANY_LAYOUT VERSION_1 ACCESS_PLATFORM
1) provision vDPA device with all features that are supported by the
net simulator
dev1: mac 00:00:00:00:00:00 link up link_announce false mtu 1500
negotiated_features MTU MAC CTRL_VQ CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM
2) provision vDPA device with a subset of the features
dev1: mac 00:00:00:00:00:00 link up link_announce false mtu 1500
negotiated_features CTRL_VQ VERSION_1 ACCESS_PLATFORM
Reviewed-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220927074810.28627-3-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/vdpa_sim/vdpa_sim.c | 12 | ||||
| -rw-r--r-- | drivers/vdpa/vdpa_sim/vdpa_sim.h | 3 | ||||
| -rw-r--r-- | drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 2 | ||||
| -rw-r--r-- | drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 5 |
4 files changed, 17 insertions, 5 deletions
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 225b7f5d8be3..b071f0d842fb 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -18,6 +18,7 @@ #include <linux/vdpa.h> #include <linux/vhost_iotlb.h> #include <linux/iova.h> +#include <uapi/linux/vdpa.h> #include "vdpa_sim.h" @@ -245,13 +246,22 @@ static const struct dma_map_ops vdpasim_dma_ops = { static const struct vdpa_config_ops vdpasim_config_ops; static const struct vdpa_config_ops vdpasim_batch_config_ops; -struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr) +struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr, + const struct vdpa_dev_set_config *config) { const struct vdpa_config_ops *ops; struct vdpasim *vdpasim; struct device *dev; int i, ret = -ENOMEM; + if (config->mask & BIT_ULL(VDPA_ATTR_DEV_FEATURES)) { + if (config->device_features & + ~dev_attr->supported_features) + return ERR_PTR(-EINVAL); + dev_attr->supported_features = + config->device_features; + } + if (batch_mapping) ops = &vdpasim_batch_config_ops; else diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h index 061986f30911..0e78737dcc16 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h @@ -71,7 +71,8 @@ struct vdpasim { spinlock_t iommu_lock; }; -struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *attr); +struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *attr, + const struct vdpa_dev_set_config *config); /* TODO: cross-endian support */ static inline bool vdpasim_is_little_endian(struct vdpasim *vdpasim) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c index c8bfea3b7db2..c6db1a1baf76 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c @@ -383,7 +383,7 @@ static int vdpasim_blk_dev_add(struct vdpa_mgmt_dev *mdev, const char *name, dev_attr.work_fn = vdpasim_blk_work; dev_attr.buffer_size = VDPASIM_BLK_CAPACITY << SECTOR_SHIFT; - simdev = vdpasim_create(&dev_attr); + simdev = vdpasim_create(&dev_attr, config); if (IS_ERR(simdev)) return PTR_ERR(simdev); diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c index 886449e88502..c3cb225ea469 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c @@ -254,7 +254,7 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev, const char *name, dev_attr.work_fn = vdpasim_net_work; dev_attr.buffer_size = PAGE_SIZE; - simdev = vdpasim_create(&dev_attr); + simdev = vdpasim_create(&dev_attr, config); if (IS_ERR(simdev)) return PTR_ERR(simdev); @@ -294,7 +294,8 @@ static struct vdpa_mgmt_dev mgmt_dev = { .id_table = id_table, .ops = &vdpasim_net_mgmtdev_ops, .config_attr_mask = (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR | - 1 << VDPA_ATTR_DEV_NET_CFG_MTU), + 1 << VDPA_ATTR_DEV_NET_CFG_MTU | + 1 << VDPA_ATTR_DEV_FEATURES), .max_supported_vqs = VDPASIM_NET_VQ_NUM, .supported_features = VDPASIM_NET_FEATURES, }; |