rawdev: mark start and stop functions optional

Not all rawdevs will require a device start/stop function, so rather than
requiring such drivers to provide dummy functions, just set the
started/stopped rawdev flag from the rawdev layer and return success.

Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Nipun Gupta <nipun.gupta@nxp.com>

diff --git a/lib/librte_rawdev/rte_rawdev.c b/lib/librte_rawdev/rte_rawdev.c
index fd123bb..36f3acf 100644 (file)
--- a/lib/librte_rawdev/rte_rawdev.c
+++ b/lib/librte_rawdev/rte_rawdev.c
@@ -398,20 +398,21 @@ rte_rawdev_start(uint16_t dev_id)
 
        RTE_RAWDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
        dev = &rte_rawdevs[dev_id];
-       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
-
        if (dev->started != 0) {
                RTE_RDEV_ERR("Device with dev_id=%" PRIu8 "already started",
                             dev_id);
                return 0;
        }
 
+       if (dev->dev_ops->dev_start == NULL)
+               goto mark_started;
+
        diag = (*dev->dev_ops->dev_start)(dev);
-       if (diag == 0)
-               dev->started = 1;
-       else
+       if (diag != 0)
                return diag;
 
+mark_started:
+       dev->started = 1;
        return 0;
 }
 
@@ -425,15 +426,18 @@ rte_rawdev_stop(uint16_t dev_id)
        RTE_RAWDEV_VALID_DEVID_OR_RET(dev_id);
        dev = &rte_rawdevs[dev_id];
 
-       RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
-
        if (dev->started == 0) {
                RTE_RDEV_ERR("Device with dev_id=%" PRIu8 "already stopped",
                        dev_id);
                return;
        }
 
+       if (dev->dev_ops->dev_stop == NULL)
+               goto mark_stopped;
+
        (*dev->dev_ops->dev_stop)(dev);
+
+mark_stopped:
        dev->started = 0;
 }