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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: tiwei.bie@intel.com, zhihong.wang@intel.com, amorenoz@redhat.com,
xiao.w.wang@intel.com, dev@dpdk.org, jfreimann@redhat.com
Cc: stable@dpdk.org,
Maxime Coquelin <maxime.coquelin@redhat.com>
Date: Thu, 29 Aug 2019 09:59:52 +0200
Message-Id: <20190829080000.20806-8-maxime.coquelin@redhat.com>
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Subject: [dpdk-dev] [PATCH 07/15] net/virtio: add vDPA ops to get number of
queue
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This patch implements the vDPA .get_queue_num() callback.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
drivers/net/virtio/virtio_vdpa.c | 43 ++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c
index bbb417b94..07ff1e090 100644
--- a/drivers/net/virtio/virtio_vdpa.c
+++ b/drivers/net/virtio/virtio_vdpa.c
@@ -60,6 +60,29 @@ static struct internal_list_head internal_list =
static pthread_mutex_t internal_list_lock = PTHREAD_MUTEX_INITIALIZER;
+static struct internal_list *
+find_internal_resource_by_did(int did)
+{
+ int found = 0;
+ struct internal_list *list;
+
+ pthread_mutex_lock(&internal_list_lock);
+
+ TAILQ_FOREACH(list, &internal_list, next) {
+ if (did == list->dev->did) {
+ found = 1;
+ break;
+ }
+ }
+
+ pthread_mutex_unlock(&internal_list_lock);
+
+ if (!found)
+ return NULL;
+
+ return list;
+}
+
static struct internal_list *
find_internal_resource_by_dev(struct rte_pci_device *pdev)
{
@@ -131,7 +154,27 @@ virtio_vdpa_vfio_setup(struct virtio_vdpa_device *dev)
return -1;
}
+static int
+virtio_vdpa_get_queue_num(int did, uint32_t *queue_num)
+{
+ struct internal_list *list;
+ struct virtio_vdpa_device *dev;
+
+ list = find_internal_resource_by_did(did);
+ if (list == NULL) {
+ DRV_LOG(ERR, "Invalid device id: %d", did);
+ return -1;
+ }
+
+ dev = list->dev;
+
+ *queue_num = dev->max_queue_pairs;
+
+ return 0;
+}
+
static struct rte_vdpa_dev_ops virtio_vdpa_ops = {
+ .get_queue_num = virtio_vdpa_get_queue_num,
};
static inline int
--
2.21.0