From da802961832f9852886304290135457519815497 Mon Sep 17 00:00:00 2001 From: Xuan Zhuo Date: Mon, 1 Aug 2022 14:38:21 +0800 Subject: virtio: record the maximum queue num supported by the device. virtio-net can display the maximum (supported by hardware) ring size in ethtool -g eth0. When the subsequent patch implements vring reset, it can judge whether the ring size passed by the driver is legal based on this. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang Message-Id: <20220801063902.129329-2-xuanzhuo@linux.alibaba.com> Signed-off-by: Michael S. Tsirkin --- arch/um/drivers/virtio_uml.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/um/drivers') diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c index 82ff3785bf69..e719af8bdf56 100644 --- a/arch/um/drivers/virtio_uml.c +++ b/arch/um/drivers/virtio_uml.c @@ -958,6 +958,7 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev, goto error_create; } vq->priv = info; + vq->num_max = num; num = virtqueue_get_vring_size(vq); if (vu_dev->protocol_features & -- cgit v1.2.3 From a10fba0377145fccefea4dc4dd5915b7ed87e546 Mon Sep 17 00:00:00 2001 From: Xuan Zhuo Date: Mon, 1 Aug 2022 14:38:53 +0800 Subject: virtio: find_vqs() add arg sizes find_vqs() adds a new parameter sizes to specify the size of each vq vring. NULL as sizes means that all queues in find_vqs() use the maximum size. A value in the array is 0, which means that the corresponding queue uses the maximum size. In the split scenario, the meaning of size is the largest size, because it may be limited by memory, the virtio core will try a smaller size. And the size is power of 2. Signed-off-by: Xuan Zhuo Acked-by: Hans de Goede Reviewed-by: Mathieu Poirier Acked-by: Jason Wang Message-Id: <20220801063902.129329-34-xuanzhuo@linux.alibaba.com> Signed-off-by: Michael S. Tsirkin --- arch/um/drivers/virtio_uml.c | 2 +- drivers/platform/mellanox/mlxbf-tmfifo.c | 1 + drivers/remoteproc/remoteproc_virtio.c | 1 + drivers/s390/virtio/virtio_ccw.c | 1 + drivers/virtio/virtio_mmio.c | 1 + drivers/virtio/virtio_pci_common.c | 2 +- drivers/virtio/virtio_pci_common.h | 2 +- drivers/virtio/virtio_pci_modern.c | 7 +++++-- drivers/virtio/virtio_vdpa.c | 1 + include/linux/virtio_config.h | 14 +++++++++----- 10 files changed, 22 insertions(+), 10 deletions(-) (limited to 'arch/um/drivers') diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c index e719af8bdf56..79e38afd4b91 100644 --- a/arch/um/drivers/virtio_uml.c +++ b/arch/um/drivers/virtio_uml.c @@ -1011,7 +1011,7 @@ error_kzalloc: static int vu_find_vqs(struct virtio_device *vdev, unsigned nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, + const char * const names[], u32 sizes[], const bool *ctx, struct irq_affinity *desc) { struct virtio_uml_device *vu_dev = to_virtio_uml_device(vdev); diff --git a/drivers/platform/mellanox/mlxbf-tmfifo.c b/drivers/platform/mellanox/mlxbf-tmfifo.c index 1ae3c56b66b0..8be13d416f48 100644 --- a/drivers/platform/mellanox/mlxbf-tmfifo.c +++ b/drivers/platform/mellanox/mlxbf-tmfifo.c @@ -928,6 +928,7 @@ static int mlxbf_tmfifo_virtio_find_vqs(struct virtio_device *vdev, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], + u32 sizes[], const bool *ctx, struct irq_affinity *desc) { diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c index 0f7706e23eb9..81c4f5776109 100644 --- a/drivers/remoteproc/remoteproc_virtio.c +++ b/drivers/remoteproc/remoteproc_virtio.c @@ -158,6 +158,7 @@ static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], + u32 sizes[], const bool * ctx, struct irq_affinity *desc) { diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index 6b86d0280d6b..72500cd2dbf5 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -635,6 +635,7 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], + u32 sizes[], const bool *ctx, struct irq_affinity *desc) { diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 3ff746e3f24a..dfcecfd7aba1 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -474,6 +474,7 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], + u32 sizes[], const bool *ctx, struct irq_affinity *desc) { diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index ad258a9d3b9f..7ad734584823 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -396,7 +396,7 @@ out_del_vqs: /* the config->find_vqs() implementation */ int vp_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, + const char * const names[], u32 sizes[], const bool *ctx, struct irq_affinity *desc) { int err; diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h index 23112d84218f..a5ff838b85a5 100644 --- a/drivers/virtio/virtio_pci_common.h +++ b/drivers/virtio/virtio_pci_common.h @@ -110,7 +110,7 @@ void vp_del_vqs(struct virtio_device *vdev); /* the config->find_vqs() implementation */ int vp_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, + const char * const names[], u32 sizes[], const bool *ctx, struct irq_affinity *desc); const char *vp_bus_name(struct virtio_device *vdev); diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index c3b9f2761849..be51ec849252 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -347,12 +347,15 @@ err: static int vp_modern_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, + const char * const names[], + u32 sizes[], + const bool *ctx, struct irq_affinity *desc) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); struct virtqueue *vq; - int rc = vp_find_vqs(vdev, nvqs, vqs, callbacks, names, ctx, desc); + int rc = vp_find_vqs(vdev, nvqs, vqs, callbacks, names, sizes, ctx, + desc); if (rc) return rc; diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c index 9670cc79371d..832d2c5b1b19 100644 --- a/drivers/virtio/virtio_vdpa.c +++ b/drivers/virtio/virtio_vdpa.c @@ -269,6 +269,7 @@ static int virtio_vdpa_find_vqs(struct virtio_device *vdev, unsigned int nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], + u32 sizes[], const bool *ctx, struct irq_affinity *desc) { diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 36ec7be1f480..888f7e96f0c7 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -55,6 +55,7 @@ struct virtio_shm_region { * include a NULL entry for vqs that do not need a callback * names: array of virtqueue names (mainly for debugging) * include a NULL entry for vqs unused by driver + * sizes: array of virtqueue sizes * Returns 0 on success or error status * @del_vqs: free virtqueues found by find_vqs(). * @synchronize_cbs: synchronize with the virtqueue callbacks (optional) @@ -103,7 +104,9 @@ struct virtio_config_ops { void (*reset)(struct virtio_device *vdev); int (*find_vqs)(struct virtio_device *, unsigned nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], - const char * const names[], const bool *ctx, + const char * const names[], + u32 sizes[], + const bool *ctx, struct irq_affinity *desc); void (*del_vqs)(struct virtio_device *); void (*synchronize_cbs)(struct virtio_device *); @@ -212,7 +215,7 @@ struct virtqueue *virtio_find_single_vq(struct virtio_device *vdev, const char *names[] = { n }; struct virtqueue *vq; int err = vdev->config->find_vqs(vdev, 1, &vq, callbacks, names, NULL, - NULL); + NULL, NULL); if (err < 0) return ERR_PTR(err); return vq; @@ -224,7 +227,8 @@ int virtio_find_vqs(struct virtio_device *vdev, unsigned nvqs, const char * const names[], struct irq_affinity *desc) { - return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, NULL, desc); + return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, NULL, + NULL, desc); } static inline @@ -233,8 +237,8 @@ int virtio_find_vqs_ctx(struct virtio_device *vdev, unsigned nvqs, const char * const names[], const bool *ctx, struct irq_affinity *desc) { - return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, ctx, - desc); + return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, NULL, + ctx, desc); } /** -- cgit v1.2.3