summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--extras/libmemif/examples/CMakeLists.txt1
-rw-r--r--extras/libmemif/examples/common/common.h2
-rw-r--r--extras/libmemif/examples/test_app/main.c315
3 files changed, 317 insertions, 1 deletions
diff --git a/extras/libmemif/examples/CMakeLists.txt b/extras/libmemif/examples/CMakeLists.txt
index f6cfb882805..7622909e7be 100644
--- a/extras/libmemif/examples/CMakeLists.txt
+++ b/extras/libmemif/examples/CMakeLists.txt
@@ -26,6 +26,7 @@ set(COMMON_SOURCE_FILES
list(APPEND EXAMPLES_LIST
loopback/main.c
icmp_responder/main.c
+ test_app/main.c
)
foreach (EXAMPLE_SRC ${EXAMPLES_LIST})
diff --git a/extras/libmemif/examples/common/common.h b/extras/libmemif/examples/common/common.h
index 3538e39e23b..f6c5edc3b4e 100644
--- a/extras/libmemif/examples/common/common.h
+++ b/extras/libmemif/examples/common/common.h
@@ -46,7 +46,7 @@
while (0)
/* maximum tx/rx memif buffers */
-#define MAX_MEMIF_BUFS 256
+#define MAX_MEMIF_BUFS 1024
struct memif_connection;
diff --git a/extras/libmemif/examples/test_app/main.c b/extras/libmemif/examples/test_app/main.c
new file mode 100644
index 00000000000..2293365d0bb
--- /dev/null
+++ b/extras/libmemif/examples/test_app/main.c
@@ -0,0 +1,315 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2022 Cisco Systems, Inc.
+ */
+#include <stdlib.h>
+#include <sys/types.h>
+#include <inttypes.h>
+#include <string.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <getopt.h>
+
+#include <libmemif.h>
+#include <common.h>
+
+#define APP_NAME "test_app"
+
+#define IF_NAME0 "libmemif0"
+#define IF_ID0 0
+#define IF_NAME1 "libmemif1"
+#define IF_ID1 1
+#define SOCKET_PATH "/run/vpp/memif.sock"
+
+memif_connection_t intf0, intf1;
+int epfd;
+
+/* informs user about connected status. private_ctx is used by user to identify
+ * connection */
+int
+on_connect (memif_conn_handle_t conn, void *private_ctx)
+{
+ INFO ("memif connected!");
+ int err;
+
+ memif_connection_t *c = (memif_connection_t *) private_ctx;
+
+ c->is_connected = 1;
+ alloc_memif_buffers (c);
+
+ err = memif_refill_queue (conn, 0, -1, 0);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_refill_queue: %s", memif_strerror (err));
+ return err;
+ }
+
+ print_memif_details (c);
+
+ return 0;
+}
+
+/* informs user about disconnected status. private_ctx is used by user to
+ * identify connection */
+int
+on_disconnect (memif_conn_handle_t conn, void *private_ctx)
+{
+ INFO ("memif disconnected!");
+
+ memif_connection_t *c = (memif_connection_t *) private_ctx;
+
+ c->is_connected = 0;
+ free_memif_buffers (c);
+
+ /* stop event polling thread */
+ int err = memif_cancel_poll_event (memif_get_socket_handle (conn));
+ if (err != MEMIF_ERR_SUCCESS)
+ INFO ("We are doomed...");
+
+ return 0;
+}
+
+int
+on_interrupt (memif_conn_handle_t conn, void *private_ctx, uint16_t qid)
+{
+ memif_connection_t *c = (memif_connection_t *) private_ctx;
+ memif_connection_t *s, *r;
+ int err, i;
+ uint16_t tx;
+
+ if (c == &intf0)
+ {
+ r = &intf0;
+ s = &intf1;
+ }
+ else
+ {
+ r = &intf1;
+ s = &intf0;
+ }
+
+ /* receive packets from the shared memory */
+ err =
+ memif_rx_burst (r->conn, qid, r->rx_bufs, MAX_MEMIF_BUFS, &r->rx_buf_num);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_rx_burst: %s", memif_strerror (err));
+ return err;
+ }
+
+ do
+ {
+ /* allocate tx buffers */
+ err = memif_buffer_alloc (s->conn, s->tx_qid, s->tx_bufs, r->rx_buf_num,
+ &s->tx_buf_num, 2048);
+ /* suppress full ring error MEMIF_ERR_NOBUF_RING */
+ if (err != MEMIF_ERR_SUCCESS && err != MEMIF_ERR_NOBUF_RING)
+ {
+ INFO ("memif_buffer_alloc: %s", memif_strerror (err));
+ goto error;
+ }
+
+ /* Process the packets */
+ for (i = 0; i < s->tx_buf_num; i++)
+ {
+ memcpy (s->tx_bufs[i].data, r->rx_bufs[i].data, r->rx_bufs[i].len);
+ s->tx_bufs[i].len = r->rx_bufs[i].len;
+ }
+
+ /* Done processing packets */
+ /* refill the queue */
+ err = memif_refill_queue (r->conn, qid, s->tx_buf_num, 0);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_refill_queue: %s", memif_strerror (err));
+ goto error;
+ }
+ r->rx_buf_num -= s->tx_buf_num;
+
+ err =
+ memif_tx_burst (s->conn, s->tx_qid, s->tx_bufs, s->tx_buf_num, &tx);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_tx_burst: %s", memif_strerror (err));
+ goto error;
+ }
+ s->tx_buf_num -= tx;
+ /* This should never happen */
+ if (s->tx_buf_num != 0)
+ {
+ INFO ("memif_tx_burst failed to send all allocated buffers.");
+ goto error;
+ }
+ }
+ while (r->rx_buf_num > 0);
+
+ return 0;
+
+error:
+ err = memif_refill_queue (conn, qid, r->rx_buf_num, 0);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_refill_queue: %s", memif_strerror (err));
+ return err;
+ }
+ r->rx_buf_num = 0;
+
+ return -1;
+}
+
+void
+print_help ()
+{
+ printf ("LIBMEMIF TEST APP: %s", APP_NAME);
+#ifdef TEST_DBG
+ printf (" (debug)");
+#endif
+ printf ("\n");
+ printf ("==============================\n");
+ print_version ();
+ printf ("==============================\n");
+ printf (
+ "In this testing application, memif endpoints connect to an external "
+ "application.\n");
+ printf ("The test application loopbacks recieved packets from one memif to "
+ "another memif .\n");
+ printf ("The program will exit once the interfaces are disconnected.\n");
+ printf ("==============================\n");
+ printf ("Usage: test_app [OPTIONS]\n\n");
+ printf ("Options:\n");
+ printf ("\t-r\tInterface role <slave|master>. Default: slave\n");
+ printf ("\t-s\tSocket path. Supports abstract socket using @ before the "
+ "path. Default: /run/vpp/memif.sock\n");
+ printf ("\t-i\tInterface id. Default: 0\n");
+ printf ("\t-t\tInterface id2. Default: 1\n");
+ printf ("\t-h\tShow help and exit.\n");
+ printf ("\t-v\tShow libmemif and memif version information and exit.\n");
+}
+
+int
+main (int argc, char *argv[])
+{
+ memif_socket_args_t memif_socket_args = { 0 };
+ memif_socket_handle_t memif_socket;
+ memif_conn_args_t memif_conn_args = { 0 };
+ int opt, err, ret = 0;
+ uint8_t is_master = 0;
+ char socket_path[108];
+ int id0 = IF_ID0;
+ int id1 = IF_ID1;
+
+ strncpy (socket_path, SOCKET_PATH, strlen (SOCKET_PATH));
+
+ /* prepare the private data */
+ memset (&intf0, 0, sizeof (intf0));
+ memset (&intf1, 0, sizeof (intf1));
+
+ while ((opt = getopt (argc, argv, "rsithv")) != -1)
+ {
+ switch (opt)
+ {
+ case 'r':
+ if (strncmp (optarg, "master", sizeof (optarg)) == 0)
+ {
+ is_master = 1;
+ }
+ else if (strncmp (optarg, "slave", sizeof (optarg)) == 0)
+ {
+ is_master = 0;
+ }
+ else
+ {
+ INFO ("Invalid role value: '%s'", optarg);
+ return -1;
+ }
+ break;
+ case 's':
+ sprintf (socket_path, "%s", optarg);
+ break;
+ case 'i':
+ id0 = atoi (optarg);
+ break;
+ case 't':
+ id1 = atoi (optarg);
+ break;
+ case 'h':
+ print_help ();
+ return 0;
+ case 'v':
+ print_version ();
+ return 0;
+ }
+ }
+
+ /** Create memif socket
+ *
+ * Interfaces are internally stored in a database referenced by memif socket.
+ */
+ sprintf (memif_socket_args.path, "%s", socket_path);
+ /* Set application name */
+ strncpy (memif_socket_args.app_name, APP_NAME, strlen (APP_NAME));
+
+ /* configure autoconnect timer */
+ if (is_master == 0)
+ {
+ memif_socket_args.connection_request_timer.it_value.tv_sec = 2;
+ memif_socket_args.connection_request_timer.it_value.tv_nsec = 0;
+ memif_socket_args.connection_request_timer.it_interval.tv_sec = 2;
+ memif_socket_args.connection_request_timer.it_interval.tv_nsec = 0;
+ }
+
+ err = memif_create_socket (&memif_socket, &memif_socket_args, NULL);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_create_socket: %s", memif_strerror (err));
+ goto error;
+ }
+
+ /**
+ * Create memif interfaces
+ */
+ memif_conn_args.socket = memif_socket;
+ memif_conn_args.interface_id = id0;
+ strncpy (memif_conn_args.interface_name, IF_NAME0,
+ sizeof (memif_conn_args.interface_name));
+ memif_conn_args.is_master = is_master;
+
+ err = memif_create (&intf0.conn, &memif_conn_args, on_connect, on_disconnect,
+ on_interrupt, (void *) &intf0);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_create_socket: %s", memif_strerror (err));
+ return err;
+ }
+
+ memif_conn_args.interface_id = id1;
+ strncpy (memif_conn_args.interface_name, IF_NAME1,
+ sizeof (memif_conn_args.interface_name));
+
+ err = memif_create (&intf1.conn, &memif_conn_args, on_connect, on_disconnect,
+ on_interrupt, (void *) &intf1);
+ if (err != MEMIF_ERR_SUCCESS)
+ {
+ INFO ("memif_create_socket: %s", memif_strerror (err));
+ return err;
+ }
+
+ do
+ {
+ err = memif_poll_event (memif_socket, -1);
+ }
+ while (err == MEMIF_ERR_SUCCESS);
+
+ return 0;
+
+error:
+ ret = -1;
+done:
+ free_memif_buffers (&intf0);
+ free_memif_buffers (&intf1);
+ memif_delete (&intf0.conn);
+ memif_delete (&intf1.conn);
+ memif_delete_socket (&memif_socket);
+ return ret;
+}