+++ /dev/null
-/*
- *------------------------------------------------------------------
- * Copyright (c) 2017 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *------------------------------------------------------------------
- */
-
-#include <stdlib.h>
-#include <stdint.h>
-#include <net/if.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/uio.h>
-#include <sys/mman.h>
-#include <sys/prctl.h>
-#include <inttypes.h>
-#include <string.h>
-#include <stdio.h>
-#include <netdb.h>
-#include <linux/ip.h>
-#include <linux/icmp.h>
-#include <arpa/inet.h>
-#include <stdlib.h>
-#include <netinet/if_ether.h>
-#include <net/if_arp.h>
-#include <asm/byteorder.h>
-#include <byteswap.h>
-#include <string.h>
-#include <sys/epoll.h>
-#include <errno.h>
-#include <unistd.h>
-#include <signal.h>
-#include <pthread.h>
-
-#include <libmemif.h>
-#include <icmp_proto.h>
-
-#define APP_NAME "ICMP_Responder"
-#define IF_NAME "memif_connection"
-
-
-#ifdef ICMP_DBG
-#define DBG(...) do { \
- printf (APP_NAME":%s:%d: ", __func__, __LINE__); \
- printf (__VA_ARGS__); \
- printf ("\n"); \
- } while (0)
-#else
-#define DBG(...)
-#endif
-
-#define INFO(...) do { \
- printf ("INFO: "__VA_ARGS__); \
- printf ("\n"); \
- } while (0)
-
-/* maximum tx/rx memif buffers */
-#define MAX_MEMIF_BUFS 256
-#define MAX_CONNS 50
-#define MAX_QUEUES 2
-#define MAX_THREADS ((MAX_CONNS) * (MAX_QUEUES))
-
-int main_epfd;
-
-typedef struct
-{
- /* thread id */
- uint8_t id;
- /* memif connection index */
- uint16_t index;
- /* id of queue to be handled by thread */
- uint8_t qid;
- uint8_t isRunning;
-
- uint16_t rx_buf_num;
- uint16_t tx_buf_num;
- memif_buffer_t *rx_bufs;
- memif_buffer_t *tx_bufs;
-} memif_thread_data_t;
-
-typedef struct
-{
- uint16_t index;
- /* memif connection handle */
- memif_conn_handle_t conn;
- /* interface ip address */
- uint8_t ip_addr[4];
- /* inform pthread about connection termination */
- uint8_t pending_del;
-} memif_connection_t;
-
-memif_connection_t memif_connection[MAX_CONNS];
-long ctx[MAX_CONNS];
-
-/* thread data specific for each thread */
-memif_thread_data_t thread_data[MAX_THREADS];
-pthread_t thread[MAX_THREADS];
-
-void
-user_signal_handler (int sig)
-{
-}
-
-static void
-print_memif_details ()
-{
- memif_details_t md;
- ssize_t buflen;
- char *buf;
- int err, i, e, ti;
- buflen = 2048;
- buf = malloc (buflen);
- printf ("MEMIF DETAILS\n");
- printf ("==============================\n");
- for (i = 0; i < MAX_CONNS; i++)
- {
- memif_connection_t *c = &memif_connection[i];
-
- memset (&md, 0, sizeof (md));
- memset (buf, 0, buflen);
-
- err = memif_get_details (c->conn, &md, buf, buflen);
- if (err != MEMIF_ERR_SUCCESS)
- {
- if (err != MEMIF_ERR_NOCONN)
- INFO ("%s", memif_strerror (err));
- continue;
- }
-
- printf ("interface index: %d\n", i);
-
- printf ("\tinterface ip: %u.%u.%u.%u\n",
- c->ip_addr[0], c->ip_addr[1], c->ip_addr[2], c->ip_addr[3]);
- printf ("\tinterface name: %s\n", (char *) md.if_name);
- printf ("\tapp name: %s\n", (char *) md.inst_name);
- printf ("\tremote interface name: %s\n", (char *) md.remote_if_name);
- printf ("\tremote app name: %s\n", (char *) md.remote_inst_name);
- printf ("\tid: %u\n", md.id);
- printf ("\tsecret: %s\n", (char *) md.secret);
- printf ("\trole: ");
- if (md.role)
- printf ("slave\n");
- else
- printf ("master\n");
- printf ("\tmode: ");
- switch (md.mode)
- {
- case 0:
- printf ("ethernet\n");
- break;
- case 1:
- printf ("ip\n");
- break;
- case 2:
- printf ("punt/inject\n");
- break;
- default:
- printf ("unknown\n");
- break;
- }
- printf ("\tsocket filename: %s\n", (char *) md.socket_filename);
- printf ("\trx queues:\n");
- for (e = 0; e < md.rx_queues_num; e++)
- {
- ti = (i * MAX_QUEUES) + e;
- printf ("\tqueue id: %u\n", md.rx_queues[e].qid);
- printf ("\t\tring size: %u\n", md.rx_queues[e].ring_size);
- printf ("\t\tbuffer size: %u\n", md.rx_queues[e].buffer_size);
- printf ("\t\tthread id: %u\n", thread_data[ti].id);
- printf ("\t\tthread connection index: %u\n", thread_data[ti].index);
- printf ("\t\tthread running: ");
- if (thread_data[ti].isRunning)
- printf ("yes\n");
- else
- printf ("no");
- }
- printf ("\ttx queues:\n");
- for (e = 0; e < md.tx_queues_num; e++)
- {
- printf ("\tqueue id: %u\n", md.tx_queues[e].qid);
- printf ("\t\tring size: %u\n", md.tx_queues[e].ring_size);
- printf ("\t\tbuffer size: %u\n", md.tx_queues[e].buffer_size);
- }
- printf ("\tlink: ");
- if (md.link_up_down)
- printf ("up\n");
- else
- printf ("down\n");
- }
- free (buf);
-}
-
-int
-add_epoll_fd (int epfd, int fd, uint32_t events)
-{
- if (fd < 0)
- {
- DBG ("invalid fd %d", fd);
- return -1;
- }
- struct epoll_event evt;
- memset (&evt, 0, sizeof (evt));
- evt.events = events;
- evt.data.fd = fd;
- if (epoll_ctl (epfd, EPOLL_CTL_ADD, fd, &evt) < 0)
- {
- DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
- return -1;
- }
- DBG ("fd %d added to epoll", fd);
- return 0;
-}
-
-int
-mod_epoll_fd (int epfd, int fd, uint32_t events)
-{
- if (fd < 0)
- {
- DBG ("invalid fd %d", fd);
- return -1;
- }
- struct epoll_event evt;
- memset (&evt, 0, sizeof (evt));
- evt.events = events;
- evt.data.fd = fd;
- if (epoll_ctl (epfd, EPOLL_CTL_MOD, fd, &evt) < 0)
- {
- DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
- return -1;
- }
- DBG ("fd %d modified on epoll", fd);
- return 0;
-}
-
-int
-del_epoll_fd (int epfd, int fd)
-{
- if (fd < 0)
- {
- DBG ("invalid fd %d", fd);
- return -1;
- }
- struct epoll_event evt;
- memset (&evt, 0, sizeof (evt));
- if (epoll_ctl (epfd, EPOLL_CTL_DEL, fd, &evt) < 0)
- {
- DBG ("epoll_ctl: %s fd %d", strerror (errno), fd);
- return -1;
- }
- DBG ("fd %d removed from epoll", fd);
- return 0;
-}
-
-void *
-memif_rx_poll (void *ptr)
-{
- memif_thread_data_t *data = (memif_thread_data_t *) ptr;
- memif_connection_t *c = &memif_connection[data->index];
- int err;
- uint16_t rx = 0, tx = 0, fb = 0;
-
- data->rx_bufs = malloc (sizeof (memif_buffer_t) * MAX_MEMIF_BUFS);
- data->tx_bufs = malloc (sizeof (memif_buffer_t) * MAX_MEMIF_BUFS);
- data->rx_buf_num = 0;
- data->tx_buf_num = 0;
-
- data->isRunning = 1;
- INFO ("pthread id %u starts in polling mode", data->id);
-
- while (1)
- {
- if (c->pending_del)
- goto close;
-
- /* receive data from shared memory buffers */
- err =
- memif_rx_burst (c->conn, data->qid, data->rx_bufs, MAX_MEMIF_BUFS,
- &rx);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_rx_burst: %s", memif_strerror (err));
- data->rx_buf_num += rx;
- goto error;
- }
- data->rx_buf_num += rx;
- if (rx == 0)
- {
- continue;
- }
-
- DBG ("thread id: %u", data->id);
-
- DBG ("received %d buffers. %u/%u alloc/free buffers",
- rx, data->rx_buf_num, MAX_MEMIF_BUFS - data->rx_buf_num);
-
- err =
- memif_buffer_alloc (c->conn, data->qid, data->tx_bufs,
- data->rx_buf_num, &tx, 0);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_buffer_alloc: %s", memif_strerror (err));
- data->tx_buf_num += tx;
- goto error;
- }
- data->tx_buf_num += tx;
- DBG ("allocated %d/%d buffers, %u free buffers",
- tx, data->rx_buf_num, MAX_MEMIF_BUFS - data->tx_buf_num);
-
- int i;
- for (i = 0; i < rx; i++)
- {
- resolve_packet ((void *) (data->rx_bufs + i)->data,
- (data->rx_bufs + i)->len,
- (void *) (data->tx_bufs + i)->data,
- &(data->tx_bufs + i)->len, c->ip_addr);
- }
-
- /* mark memif buffers and shared memory buffers as free */
- err = memif_refill_queue (c->conn, data->qid, rx, 0);
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_buffer_free: %s", memif_strerror (err));
- data->rx_buf_num -= fb;
-
- DBG ("freed %d buffers. %u/%u alloc/free buffers",
- fb, data->rx_buf_num, MAX_MEMIF_BUFS - data->rx_buf_num);
-
- err =
- memif_tx_burst (c->conn, data->qid, data->tx_bufs, data->tx_buf_num,
- &tx);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_tx_burst: %s", memif_strerror (err));
- goto error;
- }
- DBG ("tx: %d/%u", tx, data->tx_buf_num);
- data->tx_buf_num -= tx;
- }
-
-error:
- INFO ("thread %u error!", data->id);
- goto close;
-
-close:
- err = memif_refill_queue (c->conn, data->qid, rx, 0);
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_buffer_free: %s", memif_strerror (err));
- data->rx_buf_num -= fb;
- DBG ("freed %d buffers. %u/%u alloc/free buffers",
- fb, data->rx_buf_num, MAX_MEMIF_BUFS - data->rx_buf_num);
- free (data->rx_bufs);
- free (data->tx_bufs);
- data->isRunning = 0;
- INFO ("pthread id %u exit", data->id);
- pthread_exit (NULL);
-}
-
-void *
-memif_rx_interrupt (void *ptr)
-{
- memif_thread_data_t *data = (memif_thread_data_t *) ptr;
- memif_connection_t *c = &memif_connection[data->index];
- int err;
- uint16_t rx = 0, tx = 0, fb = 0;
- struct epoll_event evt;
- int en = 0;
- sigset_t sigset;
-
- signal (SIGUSR1, user_signal_handler);
-
- data->rx_bufs = malloc (sizeof (memif_buffer_t) * MAX_MEMIF_BUFS);
- data->tx_bufs = malloc (sizeof (memif_buffer_t) * MAX_MEMIF_BUFS);
- data->rx_buf_num = 0;
- data->tx_buf_num = 0;
-
- data->isRunning = 1;
- INFO ("pthread id %u starts in interrupt mode", data->id);
- int thread_epfd = epoll_create (1);
-
- /* get interrupt queue id */
- int fd = -1;
- err = memif_get_queue_efd (c->conn, data->qid, &fd);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_get_queue_efd: %s", memif_strerror (err));
- goto error;
- }
- add_epoll_fd (thread_epfd, fd, EPOLLIN);
-
- while (1)
- {
- memset (&evt, 0, sizeof (evt));
- evt.events = EPOLLIN | EPOLLOUT;
- sigemptyset (&sigset);
- en = epoll_pwait (thread_epfd, &evt, 1, -1, &sigset);
- if (en < 0)
- {
- if (errno == EINTR)
- goto close;
- DBG ("epoll_pwait: %s", strerror (errno));
- goto error;
- }
- else if (en > 0)
- {
- /* receive data from shared memory buffers */
- err =
- memif_rx_burst (c->conn, data->qid, data->rx_bufs, MAX_MEMIF_BUFS,
- &rx);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_rx_burst: %s", memif_strerror (err));
- data->rx_buf_num += rx;
- goto error;
- }
- data->rx_buf_num += rx;
- if (rx == 0)
- {
- continue;
- }
-
- DBG ("thread id: %u", data->id);
-
- DBG ("received %d buffers. %u/%u alloc/free buffers",
- rx, data->rx_buf_num, MAX_MEMIF_BUFS - data->rx_buf_num);
-
- err =
- memif_buffer_alloc (c->conn, data->qid, data->tx_bufs,
- data->rx_buf_num, &tx, 0);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_buffer_alloc: %s", memif_strerror (err));
- data->tx_buf_num += tx;
- goto error;
- }
- data->tx_buf_num += tx;
- DBG ("allocated %d/%d buffers, %u free buffers",
- tx, data->rx_buf_num, MAX_MEMIF_BUFS - data->tx_buf_num);
-
- int i;
- for (i = 0; i < rx; i++)
- {
- resolve_packet ((void *) (data->rx_bufs + i)->data,
- (data->rx_bufs + i)->len,
- (void *) (data->tx_bufs + i)->data,
- &(data->tx_bufs + i)->len, c->ip_addr);
- }
-
- /* mark memif buffers and shared memory buffers as free */
- err = memif_refill_queue (c->conn, data->qid, rx, 0);
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_buffer_free: %s", memif_strerror (err));
- data->rx_buf_num -= fb;
-
- DBG ("freed %d buffers. %u/%u alloc/free buffers",
- fb, data->rx_buf_num, MAX_MEMIF_BUFS - data->rx_buf_num);
-
- err =
- memif_tx_burst (c->conn, data->qid, data->tx_bufs,
- data->tx_buf_num, &tx);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_tx_burst: %s", memif_strerror (err));
- goto error;
- }
- DBG ("tx: %d/%u", tx, data->tx_buf_num);
- data->tx_buf_num -= tx;
- }
- }
-
-error:
- INFO ("thread %u error!", data->id);
- goto close;
-
-close:
- err = memif_refill_queue (c->conn, data->qid, rx, 0);
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_buffer_free: %s", memif_strerror (err));
- data->rx_buf_num -= fb;
- DBG ("freed %d buffers. %u/%u alloc/free buffers",
- fb, data->rx_buf_num, MAX_MEMIF_BUFS - data->rx_buf_num);
- free (data->rx_bufs);
- free (data->tx_bufs);
- data->isRunning = 0;
- INFO ("pthread id %u exit", data->id);
- pthread_exit (NULL);
-
-}
-
-/* informs user about connected status. private_ctx is used by user to identify connection
- (multiple connections WIP) */
-int
-on_connect (memif_conn_handle_t conn, void *private_ctx)
-{
- long index = (*(long *) private_ctx);
- int err, i, ti;
- INFO ("memif connected! index %ld", index);
- memif_connection_t *c = &memif_connection[index];
- c->pending_del = 0;
-
- for (i = 0; i < MAX_QUEUES; i++)
- {
- err = memif_set_rx_mode (c->conn, MEMIF_RX_MODE_POLLING, i);
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_set_rx_mode: %s qid: %u", memif_strerror (err), i);
- else
- {
- ti = (index * MAX_QUEUES) + i;
- if (thread_data[ti].isRunning)
- {
- INFO ("thread id: %d already running!", ti);
- continue;
- }
- thread_data[ti].index = index;
- thread_data[ti].qid = i;
- thread_data[ti].id = ti;
- if ((i % 2) == 0)
- pthread_create (&thread[ti],
- NULL, memif_rx_poll, (void *) &thread_data[ti]);
- else
- pthread_create (&thread[ti],
- NULL, memif_rx_interrupt,
- (void *) &thread_data[ti]);
- }
-
- }
- return 0;
-}
-
-/* informs user about disconnected status. private_ctx is used by user to identify connection
- (multiple connections WIP) */
-int
-on_disconnect (memif_conn_handle_t conn, void *private_ctx)
-{
- void *ptr;
- long index = (*(long *) private_ctx);
- memif_connection_t *c = &memif_connection[index];
- int i, ti;
- INFO ("memif disconnected!");
- /* inform thread in polling mode about memif disconnection */
- c->pending_del = 1;
- for (i = 0; i < MAX_QUEUES; i++)
- {
- ti = (index * MAX_QUEUES) + i;
- if (!thread_data[ti].isRunning)
- continue;
- if ((i % 2) != 0)
- pthread_kill (thread[ti], SIGUSR1); /* interrupt thread in interrupt mode */
- pthread_join (thread[ti], &ptr);
- }
- return 0;
-}
-
-/* user needs to watch new fd or stop watching fd that is about to be closed.
- control fd will be modified during connection establishment to minimize CPU usage */
-int
-control_fd_update (int fd, uint8_t events, void *ctx)
-{
- /* convert memif event definitions to epoll events */
- if (events & MEMIF_FD_EVENT_DEL)
- return del_epoll_fd (main_epfd, fd);
-
- uint32_t evt = 0;
- if (events & MEMIF_FD_EVENT_READ)
- evt |= EPOLLIN;
- if (events & MEMIF_FD_EVENT_WRITE)
- evt |= EPOLLOUT;
-
- if (events & MEMIF_FD_EVENT_MOD)
- return mod_epoll_fd (main_epfd, fd, evt);
-
- return add_epoll_fd (main_epfd, fd, evt);
-}
-
-int
-icmpr_memif_create (long index)
-{
- if (index >= MAX_CONNS)
- {
- INFO ("connection array overflow");
- return 0;
- }
- if (index < 0)
- {
- INFO ("don't even try...");
- return 0;
- }
- memif_connection_t *c = &memif_connection[index];
-
- /* setting memif connection arguments */
- memif_conn_args_t args;
- memset (&args, 0, sizeof (args));
- args.is_master = 0;
- args.log2_ring_size = 10;
- args.buffer_size = 2048;
- args.num_s2m_rings = 2;
- args.num_m2s_rings = 2;
- strncpy ((char *) args.interface_name, IF_NAME, strlen (IF_NAME));
- args.mode = 0;
- /* socket filename is not specified, because this app is supposed to
- connect to VPP over memif. so default socket filename will be used */
- /* default socketfile = /run/vpp/memif.sock */
-
- args.interface_id = index;
- /* last argument for memif_create (void * private_ctx) is used by user
- to identify connection. this context is returned with callbacks */
- int err = memif_create (&c->conn,
- &args, on_connect, on_disconnect, NULL,
- &ctx[index]);
- if (err != MEMIF_ERR_SUCCESS)
- {
- INFO ("memif_create: %s", memif_strerror (err));
- return 0;
- }
-
- c->index = index;
-
- c->ip_addr[0] = 192;
- c->ip_addr[1] = 168;
- c->ip_addr[2] = c->index + 1;
- c->ip_addr[3] = 2;
- return 0;
-}
-
-int
-icmpr_memif_delete (long index)
-{
- if (index >= MAX_CONNS)
- {
- INFO ("connection array overflow");
- return 0;
- }
- if (index < 0)
- {
- INFO ("don't even try...");
- return 0;
- }
- memif_connection_t *c = &memif_connection[index];
-
- int err;
- /* disconnect then delete memif connection */
- err = memif_delete (&c->conn);
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_delete: %s", memif_strerror (err));
- return 0;
-}
-
-void
-print_help ()
-{
- printf ("LIBMEMIF EXAMPLE APP: %s", APP_NAME);
-#ifdef ICMP_DBG
- printf (" (debug)");
-#endif
- printf ("\n");
- printf ("==============================\n");
- printf ("libmemif version: %s", LIBMEMIF_VERSION);
-#ifdef MEMIF_DBG
- printf (" (debug)");
-#endif
- printf ("\n");
- printf ("memif version: %d\n", memif_get_version ());
- printf ("commands:\n");
- printf ("\thelp - prints this help\n");
- printf ("\texit - exit app\n");
- printf ("\tconn <index> - create memif (slave-mode)\n");
- printf ("\tdel <index> - delete memif\n");
- printf ("\tshow - show connection details\n");
- printf ("\tip-set <index> <ip-addr> - set interface ip address\n");
-}
-
-int
-icmpr_free ()
-{
- /* application cleanup */
- int err;
- long i;
- for (i = 0; i < MAX_CONNS; i++)
- {
- memif_connection_t *c = &memif_connection[i];
- if (c->conn)
- icmpr_memif_delete (i);
- }
-
- err = memif_cleanup ();
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_delete: %s", memif_strerror (err));
-
- return 0;
-}
-
-int
-icmpr_set_ip (long index, char *ip)
-{
- if (index >= MAX_CONNS)
- {
- INFO ("connection array overflow");
- return 0;
- }
- if (index < 0)
- {
- INFO ("don't even try...");
- return 0;
- }
- memif_connection_t *c = &memif_connection[index];
- if (c->conn == NULL)
- {
- INFO ("no connection at index %ld", index);
- return 0;
- }
-
- char *end;
- char *ui;
- uint8_t tmp[4];
- ui = strtok (ip, ".");
- if (ui == NULL)
- goto error;
- tmp[0] = strtol (ui, &end, 10);
-
- ui = strtok (NULL, ".");
- if (ui == NULL)
- goto error;
- tmp[1] = strtol (ui, &end, 10);
-
- ui = strtok (NULL, ".");
- if (ui == NULL)
- goto error;
- tmp[2] = strtol (ui, &end, 10);
-
- ui = strtok (NULL, ".");
- if (ui == NULL)
- goto error;
- tmp[3] = strtol (ui, &end, 10);
-
- c->ip_addr[0] = tmp[0];
- c->ip_addr[1] = tmp[1];
- c->ip_addr[2] = tmp[2];
- c->ip_addr[3] = tmp[3];
-
- INFO ("memif %ld ip address set to %u.%u.%u.%u",
- index, c->ip_addr[0], c->ip_addr[1], c->ip_addr[2], c->ip_addr[3]);
-
- return 0;
-
-error:
- INFO ("invalid ip address");
- return 0;
-}
-
-
-int
-user_input_handler ()
-{
- char *in = (char *) malloc (256);
- char *ui = fgets (in, 256, stdin);
- char *end;
- if (in[0] == '\n')
- goto done;
- ui = strtok (in, " ");
- if (strncmp (ui, "exit", 4) == 0)
- {
- free (in);
- icmpr_free ();
- exit (EXIT_SUCCESS);
- }
- else if (strncmp (ui, "help", 4) == 0)
- {
- print_help ();
- goto done;
- }
- else if (strncmp (ui, "conn", 4) == 0)
- {
- ui = strtok (NULL, " ");
- if (ui != NULL)
- icmpr_memif_create (strtol (ui, &end, 10));
- else
- INFO ("expected id");
- goto done;
- }
- else if (strncmp (ui, "del", 3) == 0)
- {
- ui = strtok (NULL, " ");
- if (ui != NULL)
- icmpr_memif_delete (strtol (ui, &end, 10));
- else
- INFO ("expected id");
- goto done;
- }
- else if (strncmp (ui, "show", 4) == 0)
- {
- print_memif_details ();
- goto done;
- }
- else if (strncmp (ui, "ip-set", 6) == 0)
- {
- ui = strtok (NULL, " ");
- if (ui != NULL)
- icmpr_set_ip (strtol (ui, &end, 10), strtok (NULL, " "));
- else
- INFO ("expected id");
- goto done;
- }
- else
- {
- DBG ("unknown command: %s", ui);
- goto done;
- }
-
- return 0;
-done:
- free (in);
- return 0;
-}
-
-int
-poll_event (int timeout)
-{
- struct epoll_event evt;
- int app_err = 0, memif_err = 0, en = 0;
- uint32_t events = 0;
- memset (&evt, 0, sizeof (evt));
- evt.events = EPOLLIN | EPOLLOUT;
- sigset_t sigset;
- sigemptyset (&sigset);
- en = epoll_pwait (main_epfd, &evt, 1, timeout, &sigset);
- if (en < 0)
- {
- DBG ("epoll_pwait: %s", strerror (errno));
- return -1;
- }
- if (en > 0)
- {
- /* this app does not use any other file descriptors than stds and memif control fds */
- if (evt.data.fd > 2)
- {
- /* event of memif control fd */
- /* convert epoll events to memif events */
- if (evt.events & EPOLLIN)
- events |= MEMIF_FD_EVENT_READ;
- if (evt.events & EPOLLOUT)
- events |= MEMIF_FD_EVENT_WRITE;
- if (evt.events & EPOLLERR)
- events |= MEMIF_FD_EVENT_ERROR;
- memif_err = memif_control_fd_handler (evt.data.fd, events);
- if (memif_err != MEMIF_ERR_SUCCESS)
- INFO ("memif_control_fd_handler: %s", memif_strerror (memif_err));
- }
- else if (evt.data.fd == 0)
- {
- app_err = user_input_handler ();
- }
- else
- {
- DBG ("unexpected event at memif_epfd. fd %d", evt.data.fd);
- }
- }
-
- if ((app_err < 0) || (memif_err < 0))
- {
- if (app_err < 0)
- DBG ("user input handler error");
- if (memif_err < 0)
- DBG ("memif control fd handler error");
- return -1;
- }
-
- return 0;
-}
-
-int
-main ()
-{
- main_epfd = epoll_create (1);
- add_epoll_fd (main_epfd, 0, EPOLLIN);
-
- /* initialize memory interface */
- int err, i;
- /* if valid callback is passed as argument, fd event polling will be done by user
- all file descriptors and events will be passed to user in this callback */
- /* if callback is set to NULL libmemif will handle fd event polling */
- err = memif_init (control_fd_update, APP_NAME, NULL, NULL, NULL);
- if (err != MEMIF_ERR_SUCCESS)
- INFO ("memif_init: %s", memif_strerror (err));
-
- for (i = 0; i < MAX_CONNS; i++)
- {
- memif_connection[i].conn = NULL;
- ctx[i] = i;
- }
-
- memset (&thread_data, 0, sizeof (memif_thread_data_t) * MAX_THREADS);
-
- print_help ();
-
- /* main loop */
- while (1)
- {
- if (poll_event (-1) < 0)
- {
- DBG ("poll_event error!");
- }
- }
-}
Code Review / vpp.git / blobdiff