1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2018 Intel Corporation 3 */ 4 5 #include "ethdev_profile.h" 6 7 /** 8 * This conditional block enables Ethernet device profiling with 9 * Intel (R) VTune (TM) Amplifier. 10 */ 11 #ifdef RTE_ETHDEV_PROFILE_WITH_VTUNE 12 13 /** 14 * Hook callback to trace rte_eth_rx_burst() calls. 15 */ 16 uint16_t 17 profile_hook_rx_burst_cb( 18 __rte_unused uint16_t port_id, __rte_unused uint16_t queue_id, 19 __rte_unused struct rte_mbuf *pkts[], uint16_t nb_pkts, 20 __rte_unused uint16_t max_pkts, __rte_unused void *user_param) 21 { 22 return nb_pkts; 23 } 24 25 /** 26 * Setting profiling Rx callback for a given Ethernet device. 27 * This function must be invoked when Ethernet device is being configured. 28 * 29 * @param port_id 30 * The port identifier of the Ethernet device. 31 * @param rx_queue_num 32 * The number of Rx queues on specified port. 33 * 34 * @return 35 * - On success, zero. 36 * - On failure, a negative value. 37 */ 38 static inline int 39 vtune_profile_rx_init(uint16_t port_id, uint8_t rx_queue_num) 40 { 41 uint16_t q_id; 42 43 for (q_id = 0; q_id < rx_queue_num; ++q_id) { 44 if (!rte_eth_add_rx_callback( 45 port_id, q_id, profile_hook_rx_burst_cb, NULL)) { 46 return -rte_errno; 47 } 48 } 49 50 return 0; 51 } 52 #endif /* RTE_ETHDEV_PROFILE_WITH_VTUNE */ 53 54 int 55 __rte_eth_dev_profile_init(__rte_unused uint16_t port_id, 56 __rte_unused struct rte_eth_dev *dev) 57 { 58 #ifdef RTE_ETHDEV_PROFILE_WITH_VTUNE 59 return vtune_profile_rx_init(port_id, dev->data->nb_rx_queues); 60 #endif 61 return 0; 62 } 63