[PATCH virtio v4 05/19] virtio_pci: convert vp_*find_vqs() ops to find_vqs_info()

[Jiri Pirko <jiri@resnulli.us>]

From: Jiri Pirko <jiri@nvidia.com>

Convert existing vp_find_vqs() and vp_modern_find_vqs() implementations
to find_vqs_info() config op.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
---
v3->v4:
- moved vqi decralation into loop in vp_find_vqs_intx()
v1->v2:
- s/virtio_queue_info/virtqueue_info/
---
 drivers/virtio/virtio_pci_common.c | 48 ++++++++++++++++--------------
 drivers/virtio/virtio_pci_common.h |  3 +-
 drivers/virtio/virtio_pci_legacy.c |  2 +-
 drivers/virtio/virtio_pci_modern.c |  9 +++---
 4 files changed, 32 insertions(+), 30 deletions(-)

diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index f6b0b00e4599..7d82facafd75 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -285,12 +285,13 @@ void vp_del_vqs(struct virtio_device *vdev)
 }
 
 static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
-		struct virtqueue *vqs[], vq_callback_t *callbacks[],
-		const char * const names[], bool per_vq_vectors,
-		const bool *ctx,
-		struct irq_affinity *desc)
+			    struct virtqueue *vqs[],
+			    struct virtqueue_info vqs_info[],
+			    bool per_vq_vectors,
+			    struct irq_affinity *desc)
 {
 	struct virtio_pci_device *vp_dev = to_vp_device(vdev);
+	struct virtqueue_info *vqi;
 	u16 msix_vec;
 	int i, err, nvectors, allocated_vectors, queue_idx = 0;
 
@@ -301,9 +302,11 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
 	if (per_vq_vectors) {
 		/* Best option: one for change interrupt, one per vq. */
 		nvectors = 1;
-		for (i = 0; i < nvqs; ++i)
-			if (names[i] && callbacks[i])
+		for (i = 0; i < nvqs; ++i) {
+			vqi = &vqs_info[i];
+			if (vqi->name && vqi->callback)
 				++nvectors;
+		}
 	} else {
 		/* Second best: one for change, shared for all vqs. */
 		nvectors = 2;
@@ -317,20 +320,20 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
 	vp_dev->per_vq_vectors = per_vq_vectors;
 	allocated_vectors = vp_dev->msix_used_vectors;
 	for (i = 0; i < nvqs; ++i) {
-		if (!names[i]) {
+		vqi = &vqs_info[i];
+		if (!vqi->name) {
 			vqs[i] = NULL;
 			continue;
 		}
 
-		if (!callbacks[i])
+		if (!vqi->callback)
 			msix_vec = VIRTIO_MSI_NO_VECTOR;
 		else if (vp_dev->per_vq_vectors)
 			msix_vec = allocated_vectors++;
 		else
 			msix_vec = VP_MSIX_VQ_VECTOR;
-		vqs[i] = vp_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
-				     ctx ? ctx[i] : false,
-				     msix_vec);
+		vqs[i] = vp_setup_vq(vdev, queue_idx++, vqi->callback,
+				     vqi->name, vqi->ctx, msix_vec);
 		if (IS_ERR(vqs[i])) {
 			err = PTR_ERR(vqs[i]);
 			goto error_find;
@@ -343,7 +346,7 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
 		snprintf(vp_dev->msix_names[msix_vec],
 			 sizeof *vp_dev->msix_names,
 			 "%s-%s",
-			 dev_name(&vp_dev->vdev.dev), names[i]);
+			 dev_name(&vp_dev->vdev.dev), vqi->name);
 		err = request_irq(pci_irq_vector(vp_dev->pci_dev, msix_vec),
 				  vring_interrupt, 0,
 				  vp_dev->msix_names[msix_vec],
@@ -361,8 +364,8 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
 }
 
 static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs,
-		struct virtqueue *vqs[], vq_callback_t *callbacks[],
-		const char * const names[], const bool *ctx)
+			    struct virtqueue *vqs[],
+			    struct virtqueue_info vqs_info[])
 {
 	struct virtio_pci_device *vp_dev = to_vp_device(vdev);
 	int i, err, queue_idx = 0;
@@ -379,12 +382,14 @@ static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs,
 	vp_dev->intx_enabled = 1;
 	vp_dev->per_vq_vectors = false;
 	for (i = 0; i < nvqs; ++i) {
-		if (!names[i]) {
+		struct virtqueue_info *vqi = &vqs_info[i];
+
+		if (!vqi->name) {
 			vqs[i] = NULL;
 			continue;
 		}
-		vqs[i] = vp_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
-				     ctx ? ctx[i] : false,
+		vqs[i] = vp_setup_vq(vdev, queue_idx++, vqi->callback,
+				     vqi->name, vqi->ctx,
 				     VIRTIO_MSI_NO_VECTOR);
 		if (IS_ERR(vqs[i])) {
 			err = PTR_ERR(vqs[i]);
@@ -400,25 +405,24 @@ static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs,
 
 /* 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,
+		struct virtqueue *vqs[], struct virtqueue_info vqs_info[],
 		struct irq_affinity *desc)
 {
 	int err;
 
 	/* Try MSI-X with one vector per queue. */
-	err = vp_find_vqs_msix(vdev, nvqs, vqs, callbacks, names, true, ctx, desc);
+	err = vp_find_vqs_msix(vdev, nvqs, vqs, vqs_info, true, desc);
 	if (!err)
 		return 0;
 	/* Fallback: MSI-X with one vector for config, one shared for queues. */
-	err = vp_find_vqs_msix(vdev, nvqs, vqs, callbacks, names, false, ctx, desc);
+	err = vp_find_vqs_msix(vdev, nvqs, vqs, vqs_info, false, desc);
 	if (!err)
 		return 0;
 	/* Is there an interrupt? If not give up. */
 	if (!(to_vp_device(vdev)->pci_dev->irq))
 		return err;
 	/* Finally fall back to regular interrupts. */
-	return vp_find_vqs_intx(vdev, nvqs, vqs, callbacks, names, ctx);
+	return vp_find_vqs_intx(vdev, nvqs, vqs, vqs_info);
 }
 
 const char *vp_bus_name(struct virtio_device *vdev)
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h
index 7fef52bee455..3c4bb2d6163a 100644
--- a/drivers/virtio/virtio_pci_common.h
+++ b/drivers/virtio/virtio_pci_common.h
@@ -127,8 +127,7 @@ bool vp_notify(struct virtqueue *vq);
 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,
+		struct virtqueue *vqs[], struct virtqueue_info vqs_info[],
 		struct irq_affinity *desc);
 const char *vp_bus_name(struct virtio_device *vdev);
 
diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index d9cbb02b35a1..a9786e38d763 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -192,7 +192,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = {
 	.get_status	= vp_get_status,
 	.set_status	= vp_set_status,
 	.reset		= vp_reset,
-	.find_vqs	= vp_find_vqs,
+	.find_vqs_info	= vp_find_vqs,
 	.del_vqs	= vp_del_vqs,
 	.synchronize_cbs = vp_synchronize_vectors,
 	.get_features	= vp_get_features,
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index f62b530aa3b5..adba4a29fdf4 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -595,13 +595,12 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
 
 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,
+			      struct virtqueue_info vqs_info[],
 			      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, vqs_info, desc);
 
 	if (rc)
 		return rc;
@@ -782,7 +781,7 @@ static const struct virtio_config_ops virtio_pci_config_nodev_ops = {
 	.get_status	= vp_get_status,
 	.set_status	= vp_set_status,
 	.reset		= vp_reset,
-	.find_vqs	= vp_modern_find_vqs,
+	.find_vqs_info	= vp_modern_find_vqs,
 	.del_vqs	= vp_del_vqs,
 	.synchronize_cbs = vp_synchronize_vectors,
 	.get_features	= vp_get_features,
@@ -804,7 +803,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = {
 	.get_status	= vp_get_status,
 	.set_status	= vp_set_status,
 	.reset		= vp_reset,
-	.find_vqs	= vp_modern_find_vqs,
+	.find_vqs_info	= vp_modern_find_vqs,
 	.del_vqs	= vp_del_vqs,
 	.synchronize_cbs = vp_synchronize_vectors,
 	.get_features	= vp_get_features,
-- 
2.45.2