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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 09:59:53 +0200
Message-Id: <20190829080000.20806-9-maxime.coquelin@redhat.com>
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(mx1.redhat.com [10.5.110.70]); Thu, 29 Aug 2019 08:00:43 +0000 (UTC)
Subject: [dpdk-dev] [PATCH 08/15] net/virtio: add virtio vDPA op to get
features
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This patch implements the vDPA .get_features() callback.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
drivers/net/virtio/virtio_vdpa.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/drivers/net/virtio/virtio_vdpa.c b/drivers/net/virtio/virtio_vdpa.c
index 07ff1e090..9e2af8313 100644
--- a/drivers/net/virtio/virtio_vdpa.c
+++ b/drivers/net/virtio/virtio_vdpa.c
@@ -173,8 +173,40 @@ virtio_vdpa_get_queue_num(int did, uint32_t *queue_num)
return 0;
}
+static int
+virtio_vdpa_get_features(int did, uint64_t *features)
+{
+ 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;
+
+ *features = VTPCI_OPS(&dev->hw)->get_features(&dev->hw);
+
+ if (!(*features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) {
+ DRV_LOG(ERR, "Device does not support IOMMU");
+ return -1;
+ }
+
+ if (*features & (1ULL << VIRTIO_NET_F_CTRL_VQ))
+ dev->has_ctrl_vq = true;
+ else
+ dev->has_ctrl_vq = false;
+
+ *features |= (1ULL << VHOST_USER_F_PROTOCOL_FEATURES);
+
+ return 0;
+}
+
static struct rte_vdpa_dev_ops virtio_vdpa_ops = {
.get_queue_num = virtio_vdpa_get_queue_num,
+ .get_features = virtio_vdpa_get_features,
};
static inline int
--
2.21.0