--- /dev/null
+/*
+ * $Id$
+ */
+
+/*
+ * tst-filter.c
+ *
+ * Copyright (c) 2011 Volkswagen Group Electronic Research
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Volkswagen nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * The provided data structures and external interfaces from this code
+ * are not restricted to be used by modules with a GPL compatible license.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * Send feedback to <socketcan-users@lists.berlios.de>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <net/if.h>
+
+#include <linux/can.h>
+#include <linux/can/raw.h>
+
+#define ID 0x123
+#define TC 18 /* # of testcases */
+
+const int rx_res[TC] = {4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1};
+const int rxbits_res[TC] = {4369, 4369, 4369, 4369, 17, 4352, 17, 4352, 257, 257, 4112, 4112, 1, 256, 16, 4096, 1, 256};
+
+canid_t calc_id(int testcase)
+{
+ canid_t id = ID;
+
+ if (testcase & 1)
+ id |= CAN_EFF_FLAG;
+ if (testcase & 2)
+ id |= CAN_RTR_FLAG;
+
+ return id;
+}
+
+canid_t calc_mask(int testcase)
+{
+ canid_t mask = CAN_SFF_MASK;
+
+ if (testcase > 15)
+ return (CAN_EFF_MASK | CAN_EFF_FLAG | CAN_RTR_FLAG);
+
+ if (testcase & 4)
+ mask |= CAN_EFF_FLAG;
+ if (testcase & 8)
+ mask |= CAN_RTR_FLAG;
+
+ return mask;
+}
+
+int main(int argc, char **argv)
+{
+ fd_set rdfs;
+ struct timeval tv;
+ int s;
+ struct sockaddr_can addr;
+ struct can_filter rfilter;
+ struct can_frame frame;
+ int testcase;
+ int have_rx;
+ int rx;
+ int rxbits, rxbitval;
+ int ret;
+ int recv_own_msgs = 1;
+ struct ifreq ifr;
+
+ /* check command line options */
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <device>\n", argv[0]);
+ return 1;
+ }
+
+ if ((s = socket(PF_CAN, SOCK_RAW, CAN_RAW)) < 0) {
+ perror("socket");
+ return 1;
+ }
+
+ strcpy(ifr.ifr_name, argv[1]);
+ if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
+ perror("SIOCGIFINDEX");
+ return 1;
+ }
+ addr.can_family = AF_CAN;
+ addr.can_ifindex = ifr.ifr_ifindex;
+
+ setsockopt(s, SOL_CAN_RAW, CAN_RAW_RECV_OWN_MSGS,
+ &recv_own_msgs, sizeof(recv_own_msgs));
+
+ if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ perror("bind");
+ return 1;
+ }
+
+ printf("---\n");
+
+ for (testcase = 0; testcase < TC; testcase++) {
+
+ rfilter.can_id = calc_id(testcase);
+ rfilter.can_mask = calc_mask(testcase);
+ setsockopt(s, SOL_CAN_RAW, CAN_RAW_FILTER,
+ &rfilter, sizeof(rfilter));
+
+ printf("testcase %2d filters : can_id = 0x%08X can_mask = 0x%08X\n",
+ testcase, rfilter.can_id, rfilter.can_mask);
+
+ printf("testcase %2d sending patterns ... ", testcase);
+
+ frame.can_dlc = 1;
+ frame.data[0] = testcase;
+
+ frame.can_id = ID;
+ if (write(s, &frame, sizeof(frame)) < 0) {
+ perror("write");
+ exit(1);
+ }
+ frame.can_id = (ID | CAN_RTR_FLAG);
+ if (write(s, &frame, sizeof(frame)) < 0) {
+ perror("write");
+ exit(1);
+ }
+ frame.can_id = (ID | CAN_EFF_FLAG);
+ if (write(s, &frame, sizeof(frame)) < 0) {
+ perror("write");
+ exit(1);
+ }
+ frame.can_id = (ID | CAN_EFF_FLAG | CAN_RTR_FLAG);
+ if (write(s, &frame, sizeof(frame)) < 0) {
+ perror("write");
+ exit(1);
+ }
+
+ printf("ok\n");
+
+ have_rx = 1;
+ rx = 0;
+ rxbits = 0;
+
+ while (have_rx) {
+
+ have_rx = 0;
+ FD_ZERO(&rdfs);
+ FD_SET(s, &rdfs);
+ tv.tv_sec = 0;
+ tv.tv_usec = 50000; /* 50ms timeout */
+
+ ret = select(s+1, &rdfs, NULL, NULL, &tv);
+ if (ret < 0) {
+ perror("select");
+ exit(1);
+ }
+
+ if (FD_ISSET(s, &rdfs)) {
+ have_rx = 1;
+ ret = read(s, &frame, sizeof(struct can_frame));
+ if (ret < 0) {
+ perror("read");
+ exit(1);
+ }
+ if ((frame.can_id & CAN_SFF_MASK) != ID) {
+ fprintf(stderr, "received wrong can_id!\n");
+ exit(1);
+ }
+ if (frame.data[0] != testcase) {
+ fprintf(stderr, "received wrong testcase!\n");
+ exit(1);
+ }
+
+ /* test & calc rxbits */
+ rxbitval = 1 << ((frame.can_id & (CAN_EFF_FLAG|CAN_RTR_FLAG|CAN_ERR_FLAG)) >> 28);
+
+ /* only receive a rxbitval once */
+ if ((rxbits & rxbitval) == rxbitval) {
+ fprintf(stderr, "received rxbitval %d twice!\n", rxbitval);
+ exit(1);
+ }
+ rxbits |= rxbitval;
+ rx++;
+
+ printf("testcase %2d rx : can_id = 0x%08X rx = %d rxbits = %d\n",
+ testcase, frame.can_id, rx, rxbits);
+ }
+ }
+ /* rx timed out -> check the received results */
+ if (rx_res[testcase] != rx) {
+ fprintf(stderr, "wrong rx value in testcase %d : %d (expected %d)\n",
+ testcase, rx, rx_res[testcase]);
+ exit(1);
+ }
+ if (rxbits_res[testcase] != rxbits) {
+ fprintf(stderr, "wrong rxbits value in testcase %d : %d (expected %d)\n",
+ testcase, rxbits, rxbits_res[testcase]);
+ exit(1);
+ }
+ printf("testcase %2d ok\n---\n", testcase);
+ }
+
+ close(s);
+
+ return 0;
+}
projects / socketcan-devel.git / commitdiff