2016-06-14 10:38, Reshma Pattan: > Added new public api rte_eth_add_first_rx_callback to add given > callback as head of the list. > > Signed-off-by: Reshma Pattan <reshma.pattan at intel.com> > --- > +/* > +* Add a callback that must be called first on packet RX on a given port > +* and queue. > +* > +* This API configures a first function to be called for each burst of > +* packets received on a given NIC port queue. The return value is a pointer > +* that can be used to later remove the callback using > +* rte_eth_remove_rx_callback(). > +* > +* Multiple functions are called in the order that they are added. > +* > +* @param port_id > +* The port identifier of the Ethernet device. > +* @param queue_id > +* The queue on the Ethernet device on which the callback is to be added. > +* @param fn > +* The callback function > +* @param user_param > +* A generic pointer parameter which will be passed to each invocation of > the > +* callback function on this port and queue. > +* > +* @return > +* NULL on error. > +* On success, a pointer value which can later be used to remove the > callback. > +*/ > +void *rte_eth_add_first_rx_callback(uint8_t port_id, uint16_t queue_id, > + rte_rx_callback_fn fn, void *user_param);
Sorry I fail to understand why this function is needed. What cannot be done in rte_eth_add_rx_callback?
