1 /* SPDX-License-Identifier: Apache-2.0
2 * Copyright(c) 2022 Cisco Systems, Inc.
17 #define APP_NAME "test_app"
19 #define IF_NAME0 "libmemif0"
21 #define IF_NAME1 "libmemif1"
23 #define SOCKET_PATH "/run/vpp/memif.sock"
25 memif_connection_t intf0, intf1;
28 /* informs user about connected status. private_ctx is used by user to identify
31 on_connect (memif_conn_handle_t conn, void *private_ctx)
33 INFO ("memif connected!");
36 memif_connection_t *c = (memif_connection_t *) private_ctx;
39 alloc_memif_buffers (c);
41 err = memif_refill_queue (conn, 0, -1, 0);
42 if (err != MEMIF_ERR_SUCCESS)
44 INFO ("memif_refill_queue: %s", memif_strerror (err));
48 print_memif_details (c);
53 /* informs user about disconnected status. private_ctx is used by user to
54 * identify connection */
56 on_disconnect (memif_conn_handle_t conn, void *private_ctx)
58 INFO ("memif disconnected!");
60 memif_connection_t *c = (memif_connection_t *) private_ctx;
63 free_memif_buffers (c);
65 /* stop event polling thread */
66 int err = memif_cancel_poll_event (memif_get_socket_handle (conn));
67 if (err != MEMIF_ERR_SUCCESS)
68 INFO ("We are doomed...");
74 on_interrupt (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
76 memif_connection_t *c = (memif_connection_t *) private_ctx;
77 memif_connection_t *s, *r;
92 /* receive packets from the shared memory */
94 memif_rx_burst (r->conn, qid, r->rx_bufs, MAX_MEMIF_BUFS, &r->rx_buf_num);
95 if (err != MEMIF_ERR_SUCCESS)
97 INFO ("memif_rx_burst: %s", memif_strerror (err));
103 /* allocate tx buffers */
104 err = memif_buffer_alloc (s->conn, s->tx_qid, s->tx_bufs, r->rx_buf_num,
105 &s->tx_buf_num, s->buffer_size);
106 /* suppress full ring error MEMIF_ERR_NOBUF_RING */
107 if (err != MEMIF_ERR_SUCCESS && err != MEMIF_ERR_NOBUF_RING)
109 INFO ("memif_buffer_alloc: %s", memif_strerror (err));
113 /* Process the packets */
114 for (i = 0; i < s->tx_buf_num; i++)
116 memcpy (s->tx_bufs[i].data, r->rx_bufs[i].data, r->rx_bufs[i].len);
117 s->tx_bufs[i].flags = r->rx_bufs[i].flags;
118 s->tx_bufs[i].len = r->rx_bufs[i].len;
121 /* Done processing packets */
122 /* refill the queue */
123 err = memif_refill_queue (r->conn, qid, s->tx_buf_num, 0);
124 if (err != MEMIF_ERR_SUCCESS)
126 INFO ("memif_refill_queue: %s", memif_strerror (err));
129 r->rx_buf_num -= s->tx_buf_num;
132 memif_tx_burst (s->conn, s->tx_qid, s->tx_bufs, s->tx_buf_num, &tx);
133 if (err != MEMIF_ERR_SUCCESS)
135 INFO ("memif_tx_burst: %s", memif_strerror (err));
139 /* This should never happen */
140 if (s->tx_buf_num != 0)
142 INFO ("memif_tx_burst failed to send all allocated buffers.");
146 while (r->rx_buf_num > 0);
151 err = memif_refill_queue (conn, qid, r->rx_buf_num, 0);
152 if (err != MEMIF_ERR_SUCCESS)
154 INFO ("memif_refill_queue: %s", memif_strerror (err));
165 printf ("LIBMEMIF TEST APP: %s", APP_NAME);
170 printf ("==============================\n");
172 printf ("==============================\n");
174 "In this testing application, memif endpoints connect to an external "
176 printf ("The test application loopbacks recieved packets from one memif to "
177 "another memif .\n");
178 printf ("The program will exit once the interfaces are disconnected.\n");
179 printf ("==============================\n");
180 printf ("Usage: test_app [OPTIONS]\n\n");
181 printf ("Options:\n");
182 printf ("\t-r\tInterface role <slave|master>. Default: slave\n");
183 printf ("\t-s\tSocket path. Supports abstract socket using @ before the "
184 "path. Default: /run/vpp/memif.sock\n");
185 printf ("\t-i\tInterface id. Default: 0\n");
186 printf ("\t-t\tInterface id2. Default: 1\n");
187 printf ("\t-b\tBuffer Size. Default: 2048\n");
188 printf ("\t-h\tShow help and exit.\n");
189 printf ("\t-v\tShow libmemif and memif version information and exit.\n");
193 main (int argc, char *argv[])
195 memif_socket_args_t memif_socket_args = { 0 };
196 memif_socket_handle_t memif_socket;
197 memif_conn_args_t memif_conn_args = { 0 };
198 int opt, err, ret = 0;
199 uint8_t is_master = 0;
200 char socket_path[108];
204 strncpy (socket_path, SOCKET_PATH, strlen (SOCKET_PATH));
206 /* prepare the private data */
207 memset (&intf0, 0, sizeof (intf0));
208 memset (&intf1, 0, sizeof (intf1));
210 while ((opt = getopt (argc, argv, "r:s:i:t:b:h:v")) != -1)
215 if (strncmp (optarg, "master", sizeof (optarg)) == 0)
219 else if (strncmp (optarg, "slave", sizeof (optarg)) == 0)
225 INFO ("Invalid role value: '%s'", optarg);
230 sprintf (socket_path, "%s", optarg);
239 intf1.buffer_size = intf0.buffer_size = atoi (optarg);
250 /** Create memif socket
252 * Interfaces are internally stored in a database referenced by memif socket.
254 sprintf (memif_socket_args.path, "%s", socket_path);
255 /* Set application name */
256 strncpy (memif_socket_args.app_name, APP_NAME, strlen (APP_NAME));
258 /* configure autoconnect timer */
261 memif_socket_args.connection_request_timer.it_value.tv_sec = 2;
262 memif_socket_args.connection_request_timer.it_value.tv_nsec = 0;
263 memif_socket_args.connection_request_timer.it_interval.tv_sec = 2;
264 memif_socket_args.connection_request_timer.it_interval.tv_nsec = 0;
267 err = memif_create_socket (&memif_socket, &memif_socket_args, NULL);
268 if (err != MEMIF_ERR_SUCCESS)
270 INFO ("memif_create_socket: %s", memif_strerror (err));
275 * Create memif interfaces
277 memif_conn_args.socket = memif_socket;
278 memif_conn_args.interface_id = id0;
279 strncpy (memif_conn_args.interface_name, IF_NAME0,
280 sizeof (memif_conn_args.interface_name));
281 memif_conn_args.is_master = is_master;
282 if (intf0.buffer_size)
283 memif_conn_args.buffer_size = intf0.buffer_size;
285 memif_conn_args.buffer_size = intf0.buffer_size = intf1.buffer_size = 2048;
287 err = memif_create (&intf0.conn, &memif_conn_args, on_connect, on_disconnect,
288 on_interrupt, (void *) &intf0);
289 if (err != MEMIF_ERR_SUCCESS)
291 INFO ("memif_create_socket: %s", memif_strerror (err));
295 memif_conn_args.interface_id = id1;
296 strncpy (memif_conn_args.interface_name, IF_NAME1,
297 sizeof (memif_conn_args.interface_name));
299 err = memif_create (&intf1.conn, &memif_conn_args, on_connect, on_disconnect,
300 on_interrupt, (void *) &intf1);
301 if (err != MEMIF_ERR_SUCCESS)
303 INFO ("memif_create_socket: %s", memif_strerror (err));
309 err = memif_poll_event (memif_socket, -1);
311 while (err == MEMIF_ERR_SUCCESS);
318 free_memif_buffers (&intf0);
319 free_memif_buffers (&intf1);
320 memif_delete (&intf0.conn);
321 memif_delete (&intf1.conn);
322 memif_delete_socket (&memif_socket);