1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
3 */
4
5 #include <stdint.h>
6 #include <stdio.h>
7 #include <string.h>
8 #include <sys/queue.h>
9 #include <errno.h>
10 #include <stdarg.h>
11 #include <inttypes.h>
12
13 #include <rte_common.h>
14 #include <rte_memory.h>
15 #include <rte_memzone.h>
16 #include <rte_eal.h>
17 #include <rte_byteorder.h>
18 #include <rte_launch.h>
19 #include <rte_per_lcore.h>
20 #include <rte_lcore.h>
21 #include <rte_branch_prediction.h>
22 #include <rte_debug.h>
23 #include <rte_ring.h>
24 #include <rte_log.h>
25 #include <rte_mempool.h>
26 #include <rte_memcpy.h>
27 #include <rte_mbuf.h>
28 #include <rte_interrupts.h>
29 #include <rte_ether.h>
30 #include <rte_ethdev.h>
31 #include <rte_malloc.h>
32 #include <rte_string_fns.h>
33 #include <rte_cycles.h>
34
35 #include "common.h"
36 #include "args.h"
37 #include "init.h"
38
39 #define MBUF_CACHE_SIZE 512
40
41 #define RTE_MP_RX_DESC_DEFAULT 1024
42 #define RTE_MP_TX_DESC_DEFAULT 1024
43 #define CLIENT_QUEUE_RINGSIZE 128
44
45 #define NO_FLAGS 0
46
47 /* The mbuf pool for packet rx */
48 struct rte_mempool *pktmbuf_pool;
49
50 /* array of info/queues for clients */
51 struct client *clients = NULL;
52
53 /* the port details */
54 struct port_info *ports;
55
56 /**
57 * Initialise the mbuf pool for packet reception for the NIC, and any other
58 * buffer pools needed by the app - currently none.
59 */
60 static int
init_mbuf_pools(void)61 init_mbuf_pools(void)
62 {
63 const unsigned int num_mbufs_server =
64 RTE_MP_RX_DESC_DEFAULT * ports->num_ports;
65 const unsigned int num_mbufs_client =
66 num_clients * (CLIENT_QUEUE_RINGSIZE +
67 RTE_MP_TX_DESC_DEFAULT * ports->num_ports);
68 const unsigned int num_mbufs_mp_cache =
69 (num_clients + 1) * MBUF_CACHE_SIZE;
70 const unsigned int num_mbufs =
71 num_mbufs_server + num_mbufs_client + num_mbufs_mp_cache;
72
73 /* don't pass single-producer/single-consumer flags to mbuf create as it
74 * seems faster to use a cache instead */
75 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
76 PKTMBUF_POOL_NAME, num_mbufs);
77 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
78 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
79
80 return pktmbuf_pool == NULL; /* 0 on success */
81 }
82
83 /**
84 * Initialise an individual port:
85 * - configure number of rx and tx rings
86 * - set up each rx ring, to pull from the main mbuf pool
87 * - set up each tx ring
88 * - start the port and report its status to stdout
89 */
90 static int
init_port(uint16_t port_num)91 init_port(uint16_t port_num)
92 {
93 /* for port configuration all features are off by default */
94 const struct rte_eth_conf port_conf = {
95 .rxmode = {
96 .mq_mode = RTE_ETH_MQ_RX_RSS
97 }
98 };
99 const uint16_t rx_rings = 1, tx_rings = num_clients;
100 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
101 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
102
103 uint16_t q;
104 int retval;
105
106 printf("Port %u init ... ", port_num);
107 fflush(stdout);
108
109 /* Standard DPDK port initialisation - config port, then set up
110 * rx and tx rings */
111 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
112 &port_conf)) != 0)
113 return retval;
114
115 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size,
116 &tx_ring_size);
117 if (retval != 0)
118 return retval;
119
120 for (q = 0; q < rx_rings; q++) {
121 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
122 rte_eth_dev_socket_id(port_num),
123 NULL, pktmbuf_pool);
124 if (retval < 0) return retval;
125 }
126
127 for ( q = 0; q < tx_rings; q ++ ) {
128 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
129 rte_eth_dev_socket_id(port_num),
130 NULL);
131 if (retval < 0) return retval;
132 }
133
134 retval = rte_eth_promiscuous_enable(port_num);
135 if (retval < 0)
136 return retval;
137
138 retval = rte_eth_dev_start(port_num);
139 if (retval < 0) return retval;
140
141 printf( "done: \n");
142
143 return 0;
144 }
145
146 /**
147 * Set up the DPDK rings which will be used to pass packets, via
148 * pointers, between the multi-process server and client processes.
149 * Each client needs one RX queue.
150 */
151 static int
init_shm_rings(void)152 init_shm_rings(void)
153 {
154 unsigned i;
155 unsigned socket_id;
156 const char * q_name;
157 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
158
159 clients = rte_malloc("client details",
160 sizeof(*clients) * num_clients, 0);
161 if (clients == NULL)
162 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
163
164 for (i = 0; i < num_clients; i++) {
165 /* Create an RX queue for each client */
166 socket_id = rte_socket_id();
167 q_name = get_rx_queue_name(i);
168 clients[i].rx_q = rte_ring_create(q_name,
169 ringsize, socket_id,
170 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
171 if (clients[i].rx_q == NULL)
172 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
173 }
174 return 0;
175 }
176
177 /* Check the link status of all ports in up to 9s, and print them finally */
178 static void
check_all_ports_link_status(uint16_t port_num,uint32_t port_mask)179 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
180 {
181 #define CHECK_INTERVAL 100 /* 100ms */
182 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
183 uint16_t portid;
184 uint8_t count, all_ports_up, print_flag = 0;
185 struct rte_eth_link link;
186 int ret;
187 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
188
189 printf("\nChecking link status");
190 fflush(stdout);
191 for (count = 0; count <= MAX_CHECK_TIME; count++) {
192 all_ports_up = 1;
193 for (portid = 0; portid < port_num; portid++) {
194 if ((port_mask & (1 << ports->id[portid])) == 0)
195 continue;
196 memset(&link, 0, sizeof(link));
197 ret = rte_eth_link_get_nowait(ports->id[portid], &link);
198 if (ret < 0) {
199 all_ports_up = 0;
200 if (print_flag == 1)
201 printf("Port %u link get failed: %s\n",
202 portid, rte_strerror(-ret));
203 continue;
204 }
205 /* print link status if flag set */
206 if (print_flag == 1) {
207 rte_eth_link_to_str(link_status_text,
208 sizeof(link_status_text), &link);
209 printf("Port %d %s\n",
210 ports->id[portid],
211 link_status_text);
212 continue;
213 }
214 /* clear all_ports_up flag if any link down */
215 if (link.link_status == RTE_ETH_LINK_DOWN) {
216 all_ports_up = 0;
217 break;
218 }
219 }
220 /* after finally printing all link status, get out */
221 if (print_flag == 1)
222 break;
223
224 if (all_ports_up == 0) {
225 printf(".");
226 fflush(stdout);
227 rte_delay_ms(CHECK_INTERVAL);
228 }
229
230 /* set the print_flag if all ports up or timeout */
231 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
232 print_flag = 1;
233 printf("done\n");
234 }
235 }
236 }
237
238 /**
239 * Main init function for the multi-process server app,
240 * calls subfunctions to do each stage of the initialisation.
241 */
242 int
init(int argc,char * argv[])243 init(int argc, char *argv[])
244 {
245 int retval;
246 const struct rte_memzone *mz;
247 uint16_t i;
248
249 /* init EAL, parsing EAL args */
250 retval = rte_eal_init(argc, argv);
251 if (retval < 0)
252 return -1;
253 argc -= retval;
254 argv += retval;
255
256 /* set up array for port data */
257 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
258 rte_socket_id(), NO_FLAGS);
259 if (mz == NULL)
260 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
261 memset(mz->addr, 0, sizeof(*ports));
262 ports = mz->addr;
263
264 /* parse additional, application arguments */
265 retval = parse_app_args(argc, argv);
266 if (retval != 0)
267 return -1;
268
269 /* initialise mbuf pools */
270 retval = init_mbuf_pools();
271 if (retval != 0)
272 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
273
274 /* now initialise the ports we will use */
275 for (i = 0; i < ports->num_ports; i++) {
276 retval = init_port(ports->id[i]);
277 if (retval != 0)
278 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
279 (unsigned)i);
280 }
281
282 check_all_ports_link_status(ports->num_ports, (~0x0));
283
284 /* initialise the client queues/rings for inter-eu comms */
285 init_shm_rings();
286
287 return 0;
288 }
289