2016-10-06 17:48, Bernard Iremonger:
> @@ -2508,7 +2508,7 @@ rte_eth_dev_callback_unregister(uint8_t port_id,
>
> void
> _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> - enum rte_eth_event_type event)
> + enum rte_eth_event_type event, void *cb_arg)
> {
> struct rte_eth_dev_callback *cb_lst;
> struct rte_eth_dev_callback dev_cb;
> @@ -2519,6 +2519,9 @@ _rte_eth_dev_callback_process(struct rte_eth_dev *dev,
> continue;
> dev_cb = *cb_lst;
> cb_lst->active = 1;
> + if (cb_arg != NULL)
> + dev_cb.cb_arg = (void *) cb_arg;
> +
> rte_spinlock_unlock(&rte_eth_dev_cb_lock);
> dev_cb.cb_fn(dev->data->port_id, dev_cb.event,
> dev_cb.cb_arg);
[...]
> @@ -3047,6 +3048,11 @@ typedef void (*rte_eth_dev_cb_fn)(uint8_t port_id, \
> * @param cb_arg
> * Pointer to the parameters for the registered callback.
> *
> + * The cb_arg must not be NULL if the application requires
> + * data to be returned when the callback is processed.
> + * For the RTE_ETH_EVENT_VF_MBOX data is returned to the
> + * application.
This comment is wrong.
You should say that the user data is overwritten in the case of
RTE_ETH_EVENT_VF_MBOX. And you should point to where the meaning
of this parameter is documented (ixgbe.h) or document it here.
