net/virtio: improve logs in vhost-vDPA DMA mapping

This patch adds debug logs in vhost_vdpa_dma_map() and
vhost_vdpa_dma_unmap() to ease debugging.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

diff --git a/drivers/net/virtio/virtio_user/vhost_vdpa.c b/drivers/net/virtio/virtio_user/vhost_vdpa.c
index c7b9349..c5b59e2 100644 (file)
--- a/drivers/net/virtio/virtio_user/vhost_vdpa.c
+++ b/drivers/net/virtio/virtio_user/vhost_vdpa.c
@@ -93,6 +93,9 @@ vhost_vdpa_dma_map(struct virtio_user_dev *dev, void *addr,
        msg.iotlb.size = len;
        msg.iotlb.perm = VHOST_ACCESS_RW;
 
+       PMD_DRV_LOG(DEBUG, "%s: iova: 0x%" PRIx64 ", addr: %p, len: 0x%zx",
+                       __func__, iova, addr, len);
+
        if (write(dev->vhostfd, &msg, sizeof(msg)) != sizeof(msg)) {
                PMD_DRV_LOG(ERR, "Failed to send IOTLB update (%s)",
                                strerror(errno));
@@ -113,6 +116,9 @@ vhost_vdpa_dma_unmap(struct virtio_user_dev *dev, __rte_unused void *addr,
        msg.iotlb.iova = iova;
        msg.iotlb.size = len;
 
+       PMD_DRV_LOG(DEBUG, "%s: iova: 0x%" PRIx64 ", len: 0x%zx",
+                       __func__, iova, len);
+
        if (write(dev->vhostfd, &msg, sizeof(msg)) != sizeof(msg)) {
                PMD_DRV_LOG(ERR, "Failed to send IOTLB invalidate (%s)",
                                strerror(errno));