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
profile_hook_rx_burst_cb(__rte_unused uint16_t port_id,__rte_unused uint16_t queue_id,__rte_unused struct rte_mbuf * pkts[],uint16_t nb_pkts,__rte_unused uint16_t max_pkts,__rte_unused void * user_param)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
vtune_profile_rx_init(uint16_t port_id,uint8_t rx_queue_num)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
__rte_eth_dev_profile_init(__rte_unused uint16_t port_id,__rte_unused struct rte_eth_dev * dev)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