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 <stdlib.h>
8 #include <string.h>
9 #include <sys/queue.h>
10 #include <errno.h>
11 #include <stdarg.h>
12 #include <inttypes.h>
13
14 #include <rte_common.h>
15 #include <rte_memory.h>
16 #include <rte_memzone.h>
17 #include <rte_eal.h>
18 #include <rte_byteorder.h>
19 #include <rte_launch.h>
20 #include <rte_per_lcore.h>
21 #include <rte_lcore.h>
22 #include <rte_branch_prediction.h>
23 #include <rte_debug.h>
24 #include <rte_ring.h>
25 #include <rte_log.h>
26 #include <rte_mempool.h>
27 #include <rte_memcpy.h>
28 #include <rte_mbuf.h>
29 #include <rte_interrupts.h>
30 #include <rte_ether.h>
31 #include <rte_ethdev.h>
32 #include <rte_malloc.h>
33 #include <rte_string_fns.h>
34 #include <rte_cycles.h>
35
36 #include "common.h"
37 #include "args.h"
38 #include "init.h"
39
40 #define MBUF_CACHE_SIZE 512
41
42 #define RTE_MP_RX_DESC_DEFAULT 1024
43 #define RTE_MP_TX_DESC_DEFAULT 1024
44 #define CLIENT_QUEUE_RINGSIZE 128
45
46 #define NO_FLAGS 0
47
48 /* The mbuf pool for packet rx */
49 struct rte_mempool *pktmbuf_pool;
50
51 /* array of info/queues for clients */
52 struct client *clients = NULL;
53
54 /* the port details */
55 struct port_info *ports;
56
57 /**
58 * Initialise the mbuf pool for packet reception for the NIC, and any other
59 * buffer pools needed by the app - currently none.
60 */
61 static int
init_mbuf_pools(void)62 init_mbuf_pools(void)
63 {
64 const unsigned int num_mbufs_server =
65 RTE_MP_RX_DESC_DEFAULT * ports->num_ports;
66 const unsigned int num_mbufs_client =
67 num_clients * (CLIENT_QUEUE_RINGSIZE +
68 RTE_MP_TX_DESC_DEFAULT * ports->num_ports);
69 const unsigned int num_mbufs_mp_cache =
70 (num_clients + 1) * MBUF_CACHE_SIZE;
71 const unsigned int num_mbufs =
72 num_mbufs_server + num_mbufs_client + num_mbufs_mp_cache;
73
74 /* don't pass single-producer/single-consumer flags to mbuf create as it
75 * seems faster to use a cache instead */
76 printf("Creating mbuf pool '%s' [%u mbufs] ...\n",
77 PKTMBUF_POOL_NAME, num_mbufs);
78 pktmbuf_pool = rte_pktmbuf_pool_create(PKTMBUF_POOL_NAME, num_mbufs,
79 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
80
81 return pktmbuf_pool == NULL; /* 0 on success */
82 }
83
84 /**
85 * Initialise an individual port:
86 * - configure number of rx and tx rings
87 * - set up each rx ring, to pull from the main mbuf pool
88 * - set up each tx ring
89 * - start the port and report its status to stdout
90 */
91 static int
init_port(uint16_t port_num)92 init_port(uint16_t port_num)
93 {
94 /* for port configuration all features are off by default */
95 const struct rte_eth_conf port_conf = {
96 .rxmode = {
97 .mq_mode = RTE_ETH_MQ_RX_RSS
98 }
99 };
100 const uint16_t rx_rings = 1, tx_rings = num_clients;
101 uint16_t rx_ring_size = RTE_MP_RX_DESC_DEFAULT;
102 uint16_t tx_ring_size = RTE_MP_TX_DESC_DEFAULT;
103
104 uint16_t q;
105 int retval;
106
107 printf("Port %u init ... ", port_num);
108 fflush(stdout);
109
110 /* Standard DPDK port initialisation - config port, then set up
111 * rx and tx rings */
112 if ((retval = rte_eth_dev_configure(port_num, rx_rings, tx_rings,
113 &port_conf)) != 0)
114 return retval;
115
116 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port_num, &rx_ring_size,
117 &tx_ring_size);
118 if (retval != 0)
119 return retval;
120
121 for (q = 0; q < rx_rings; q++) {
122 retval = rte_eth_rx_queue_setup(port_num, q, rx_ring_size,
123 rte_eth_dev_socket_id(port_num),
124 NULL, pktmbuf_pool);
125 if (retval < 0) return retval;
126 }
127
128 for ( q = 0; q < tx_rings; q ++ ) {
129 retval = rte_eth_tx_queue_setup(port_num, q, tx_ring_size,
130 rte_eth_dev_socket_id(port_num),
131 NULL);
132 if (retval < 0) return retval;
133 }
134
135 retval = rte_eth_promiscuous_enable(port_num);
136 if (retval < 0)
137 return retval;
138
139 retval = rte_eth_dev_start(port_num);
140 if (retval < 0) return retval;
141
142 printf( "done: \n");
143
144 return 0;
145 }
146
147 /**
148 * Set up the DPDK rings which will be used to pass packets, via
149 * pointers, between the multi-process server and client processes.
150 * Each client needs one RX queue.
151 */
152 static int
init_shm_rings(void)153 init_shm_rings(void)
154 {
155 unsigned i;
156 unsigned socket_id;
157 const char * q_name;
158 const unsigned ringsize = CLIENT_QUEUE_RINGSIZE;
159
160 clients = rte_malloc("client details",
161 sizeof(*clients) * num_clients, 0);
162 if (clients == NULL)
163 rte_exit(EXIT_FAILURE, "Cannot allocate memory for client program details\n");
164
165 for (i = 0; i < num_clients; i++) {
166 /* Create an RX queue for each client */
167 socket_id = rte_socket_id();
168 q_name = get_rx_queue_name(i);
169 clients[i].rx_q = rte_ring_create(q_name,
170 ringsize, socket_id,
171 RING_F_SP_ENQ | RING_F_SC_DEQ ); /* single prod, single cons */
172 if (clients[i].rx_q == NULL)
173 rte_exit(EXIT_FAILURE, "Cannot create rx ring queue for client %u\n", i);
174 }
175 return 0;
176 }
177
178 /* Check the link status of all ports in up to 9s, and print them finally */
179 static void
check_all_ports_link_status(uint16_t port_num,uint32_t port_mask)180 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
181 {
182 #define CHECK_INTERVAL 100 /* 100ms */
183 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
184 uint16_t portid;
185 uint8_t count, all_ports_up, print_flag = 0;
186 struct rte_eth_link link;
187 int ret;
188 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
189
190 printf("\nChecking link status");
191 fflush(stdout);
192 for (count = 0; count <= MAX_CHECK_TIME; count++) {
193 all_ports_up = 1;
194 for (portid = 0; portid < port_num; portid++) {
195 if ((port_mask & (1 << ports->id[portid])) == 0)
196 continue;
197 memset(&link, 0, sizeof(link));
198 ret = rte_eth_link_get_nowait(ports->id[portid], &link);
199 if (ret < 0) {
200 all_ports_up = 0;
201 if (print_flag == 1)
202 printf("Port %u link get failed: %s\n",
203 portid, rte_strerror(-ret));
204 continue;
205 }
206 /* print link status if flag set */
207 if (print_flag == 1) {
208 rte_eth_link_to_str(link_status_text,
209 sizeof(link_status_text), &link);
210 printf("Port %d %s\n",
211 ports->id[portid],
212 link_status_text);
213 continue;
214 }
215 /* clear all_ports_up flag if any link down */
216 if (link.link_status == RTE_ETH_LINK_DOWN) {
217 all_ports_up = 0;
218 break;
219 }
220 }
221 /* after finally printing all link status, get out */
222 if (print_flag == 1)
223 break;
224
225 if (all_ports_up == 0) {
226 printf(".");
227 fflush(stdout);
228 rte_delay_ms(CHECK_INTERVAL);
229 }
230
231 /* set the print_flag if all ports up or timeout */
232 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
233 print_flag = 1;
234 printf("done\n");
235 }
236 }
237 }
238
239 /**
240 * Main init function for the multi-process server app,
241 * calls subfunctions to do each stage of the initialisation.
242 */
243 int
init(int argc,char * argv[])244 init(int argc, char *argv[])
245 {
246 int retval;
247 const struct rte_memzone *mz;
248 uint16_t i;
249
250 /* init EAL, parsing EAL args */
251 retval = rte_eal_init(argc, argv);
252 if (retval < 0)
253 return -1;
254 argc -= retval;
255 argv += retval;
256
257 /* set up array for port data */
258 mz = rte_memzone_reserve(MZ_PORT_INFO, sizeof(*ports),
259 rte_socket_id(), NO_FLAGS);
260 if (mz == NULL)
261 rte_exit(EXIT_FAILURE, "Cannot reserve memory zone for port information\n");
262 memset(mz->addr, 0, sizeof(*ports));
263 ports = mz->addr;
264
265 /* parse additional, application arguments */
266 retval = parse_app_args(argc, argv);
267 if (retval != 0)
268 return -1;
269
270 /* initialise mbuf pools */
271 retval = init_mbuf_pools();
272 if (retval != 0)
273 rte_exit(EXIT_FAILURE, "Cannot create needed mbuf pools\n");
274
275 /* now initialise the ports we will use */
276 for (i = 0; i < ports->num_ports; i++) {
277 retval = init_port(ports->id[i]);
278 if (retval != 0)
279 rte_exit(EXIT_FAILURE, "Cannot initialise port %u\n",
280 (unsigned)i);
281 }
282
283 check_all_ports_link_status(ports->num_ports, (~0x0));
284
285 /* initialise the client queues/rings for inter-eu comms */
286 init_shm_rings();
287
288 return 0;
289 }
290