search for: max_vqs

...msix(struct pci_dev *dev, struct msix_entry *entries, - int *options, int noptions) -{ - int i; - for (i = 0; i < noptions; ++i) - if (!pci_enable_msix(dev, entries, options[i])) - return options[i]; - return -EBUSY; -} - -static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs, + int nvectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); const char *name = dev_name(&vp_dev->vdev.dev); unsigned i, v; int err = -ENOMEM; - /* We want at most one vector per queue...

...msix(struct pci_dev *dev, struct msix_entry *entries, - int *options, int noptions) -{ - int i; - for (i = 0; i < noptions; ++i) - if (!pci_enable_msix(dev, entries, options[i])) - return options[i]; - return -EBUSY; -} - -static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs, + int nvectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); const char *name = dev_name(&vp_dev->vdev.dev); unsigned i, v; int err = -ENOMEM; - /* We want at most one vector per queue...

...enable_msix(dev, entries, options[i])) > - return options[i]; > - return -EBUSY; > + int err = pci_enable_msix(dev, entries, nvectors); > + if (err > 0) > + err = -ENOSPC; > + return err; > } > > -static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) > +static int vp_request_irq(struct virtio_device *vdev) > +{ > + struct virtio_pci_device *vp_dev = to_vp_device(vdev); > + int err; > + /* Can't allocate enough MSI-X vectors, use regular interrupt */ > + vp_dev->msix_vectors = 0; > + err = request_irq(vp_dev->pci_...

...enable_msix(dev, entries, options[i])) > - return options[i]; > - return -EBUSY; > + int err = pci_enable_msix(dev, entries, nvectors); > + if (err > 0) > + err = -ENOSPC; > + return err; > } > > -static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) > +static int vp_request_irq(struct virtio_device *vdev) > +{ > + struct virtio_pci_device *vp_dev = to_vp_device(vdev); > + int err; > + /* Can't allocate enough MSI-X vectors, use regular interrupt */ > + vp_dev->msix_vectors = 0; > + err = request_irq(vp_dev->pci_...

...e subject to the dynamics of feature negotiation or possible change by driver to the config space. Examples: 1) Create vDPA by default without any config attribute $ vdpa dev add mgmtdev pci/0000:41:04.2 name vdpa0 $ vdpa dev show vdpa0 vdpa0: type network mgmtdev pci/0000:41:04.2 vendor_id 5555 max_vqs 9 max_vq_size 256 $ vdpa dev -jp show vdpa0 { "dev": { "vdpa0": { "type": "network", "mgmtdev": "pci/0000:41:04.2", "vendor_id": 5555, "max_vqs": 9,...

v2 for internal review - heavily reworked NET_F_MAC patch, matches recent PR-68875 - reordered to put "clean and reset vqs" before "alloc-irq" to make them slightly simpler patches - other minor cleanups for simpler patches These are some fixes for device providing a MAC address, for allocating irq resources later to support vhost use, and for properly cleaning vq info

v2 for internal review - heavily reworked NET_F_MAC patch, matches recent PR-68875 - reordered to put "clean and reset vqs" before "alloc-irq" to make them slightly simpler patches - other minor cleanups for simpler patches These are some fixes for device providing a MAC address, for allocating irq resources later to support vhost use, and for properly cleaning vq info

...> + > + MLX5_SET(rqtc, rqtc, list_q_type, MLX5_RQTC_LIST_Q_TYPE_VIRTIO_NET_Q); > + MLX5_SET(rqtc, rqtc, rqt_max_size, 1 << log_max_rqt); > + MLX5_SET(rqtc, rqtc, rqt_actual_size, 1); > + list = MLX5_ADDR_OF(rqtc, rqtc, rq_num[0]); > + for (i = 0, j = 0; j < ndev->mvdev.max_vqs; j++) { > + if (!ndev->vqs[j].initialized) > + continue; > + > + if (!vq_is_tx(ndev->vqs[j].index)) { > + list[i] = cpu_to_be32(ndev->vqs[j].virtq_id); > + i++; > + } > + } > + > + err = mlx5_vdpa_create_rqt(&ndev->mvdev, in, inlen, &ndev-&...

...dev->msix_preset_vectors; ++i) + free_irq(vp_dev->msix_entries[i].vector, vp_dev); + + if (!vp_dev->msix_preset_vectors) + free_irq(vp_dev->pci_dev->irq, vp_dev); +} + +/* the config->request_vqs() implementation */ +static int vp_request_vqs(struct virtio_device *vdev, unsigned max_vqs) { + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + const char *name = dev_name(&vp_dev->vdev.dev); + unsigned i, vectors; + int err = -ENOMEM; + + /* We need at most one vector per queue and one for config changes */ + vectors = vq_vector(max_vqs); + vp_dev->msix_entries = kmal...

...dev->msix_preset_vectors; ++i) + free_irq(vp_dev->msix_entries[i].vector, vp_dev); + + if (!vp_dev->msix_preset_vectors) + free_irq(vp_dev->pci_dev->irq, vp_dev); +} + +/* the config->request_vqs() implementation */ +static int vp_request_vqs(struct virtio_device *vdev, unsigned max_vqs) { + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + const char *name = dev_name(&vp_dev->vdev.dev); + unsigned i, vectors; + int err = -ENOMEM; + + /* We need at most one vector per queue and one for config changes */ + vectors = vq_vector(max_vqs); + vp_dev->msix_entries = kmal...

...free_irq(vp_dev->pci_dev->irq, vp_dev); + + if (vp_dev->msix_enabled) { + vp_dev->msix_enabled = 0; + pci_disable_msix(vp_dev->pci_dev); } - spin_unlock_irqrestore(&vp_dev->lock, flags); +} - return ret; +static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + const char *name = dev_name(&vp_dev->vdev.dev); + unsigned i, vectors; + int err = -ENOMEM; + + /* We need at most one vector per queue and one for config changes */ + vectors = VP_MSIX_VQ_VECTOR + max_vqs; + vp_dev->msix_entr...

...free_irq(vp_dev->pci_dev->irq, vp_dev); + + if (vp_dev->msix_enabled) { + vp_dev->msix_enabled = 0; + pci_disable_msix(vp_dev->pci_dev); } - spin_unlock_irqrestore(&vp_dev->lock, flags); +} - return ret; +static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + const char *name = dev_name(&vp_dev->vdev.dev); + unsigned i, vectors; + int err = -ENOMEM; + + /* We need at most one vector per queue and one for config changes */ + vectors = VP_MSIX_VQ_VECTOR + max_vqs; + vp_dev->msix_entr...

...msix(struct pci_dev *dev, struct msix_entry *entries, + int *options, int noptions) +{ + int i; + for (i = 0; i < noptions; ++i) + if (!pci_enable_msix(dev, entries, options[i])) + return options[i]; + return -EBUSY; +} + +static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + const char *name = dev_name(&vp_dev->vdev.dev); + unsigned i, v; + int err = -ENOMEM; + /* We want at most one vector per queue and one for config changes. + * Fallback to separate vectors for config and a shared for queues. +...

...msix(struct pci_dev *dev, struct msix_entry *entries, + int *options, int noptions) +{ + int i; + for (i = 0; i < noptions; ++i) + if (!pci_enable_msix(dev, entries, options[i])) + return options[i]; + return -EBUSY; +} + +static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + const char *name = dev_name(&vp_dev->vdev.dev); + unsigned i, v; + int err = -ENOMEM; + /* We want at most one vector per queue and one for config changes. + * Fallback to separate vectors for config and a shared for queues. +...

...msix(struct pci_dev *dev, struct msix_entry *entries, - int *options, int noptions) -{ - int i; - for (i = 0; i < noptions; ++i) - if (!pci_enable_msix(dev, entries, options[i])) - return options[i]; - return -EBUSY; -} - -static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +static int vp_request_vectors(struct virtio_device *vdev, int nvectors, + bool per_vq_vectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); const char *name = dev_name(&vp_dev->vdev.dev); unsigned i, v; int err = -ENOMEM; - /* We want at most one vector per que...

...msix(struct pci_dev *dev, struct msix_entry *entries, - int *options, int noptions) -{ - int i; - for (i = 0; i < noptions; ++i) - if (!pci_enable_msix(dev, entries, options[i])) - return options[i]; - return -EBUSY; -} - -static int vp_request_vectors(struct virtio_device *vdev, unsigned max_vqs) +static int vp_request_vectors(struct virtio_device *vdev, int nvectors, + bool per_vq_vectors) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); const char *name = dev_name(&vp_dev->vdev.dev); unsigned i, v; int err = -ENOMEM; - /* We want at most one vector per que...

...t; + struct pds_vdpa_comp ident_comp = {0}; > >> + struct vdpa_mgmt_dev *mgmt; > >> + struct device *pf_dev; > >> + struct pci_dev *pdev; > >> + dma_addr_t ident_pa; > >> + struct device *dev; > >> + u16 max_vqs; > >> + int err; > >> + > >> + dev = &vdpa_aux->padev->aux_dev.dev; > >> + pdev = vdpa_aux->padev->vf->pdev; > >> + mgmt = &vdpa_aux->vdpa_mdev; > >> + > >> + /* Get resource info...

This patchset is pre-requisite to export and provision device config attributes and features for vdpa live migration, in a way backward and forward compatibility can be retained. The follow up work [1] will need to be built around the new feature provisioning uAPI, with which it's easier to formalize migration compatibility support at the driver level. Thanks, -Siwei [1] [PATCH v3 0/4] vDPA:

This patchset is pre-requisite to export and provision device config attributes and features for vdpa live migration, in a way backward and forward compatibility can be retained. The follow up work [1] will need to be built around the new feature provisioning uAPI, with which it's easier to formalize migration compatibility support at the driver level. Thanks, -Siwei [1] [PATCH v3 0/4] vDPA:

This patchset is pre-requisite to export and provision device config attributes and features for vdpa live migration, in a way backward and forward compatibility can be retained. The follow up work [1] will need to be built around the new feature provisioning uAPI, with which it's easier to formalize migration compatibility support at the driver level. Thanks, -Siwei [1] [PATCH v3 0/4] vDPA: