tests/test-flows.c

   1 /*
   2  * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18 #undef NDEBUG
  19 #include "flow.h"
  20 #include <assert.h>
  21 #include <errno.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include "classifier.h"
  25 #include "ofpbuf.h"
  26 #include "ofp-print.h"
  27 #include "ofp-util.h"
  28 #include "openflow/openflow.h"
  29 #include "ovstest.h"
  30 #include "pcap-file.h"
  31 #include "timeval.h"
  32 #include "util.h"
  33 #include "openvswitch/vlog.h"
  34
  35 static void
  36 test_flows_main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
  37 {
  38     struct ofp10_match expected_match;
  39     FILE *flows, *pcap;
  40     int retval;
  41     int n = 0, errors = 0;
  42
  43     set_program_name(argv[0]);
  44
  45     flows = fopen(argv[1], "rb");
  46     if (!flows) {
  47         ovs_fatal(errno, "failed to open %s", argv[1]);
  48     }
  49     pcap = fopen(argv[2], "rb");
  50     if (!pcap) {
  51         ovs_fatal(errno, "failed to open %s", argv[2]);
  52     }
  53
  54     retval = ovs_pcap_read_header(pcap);
  55     if (retval) {
  56         ovs_fatal(retval > 0 ? retval : 0, "reading pcap header failed");
  57     }
  58
  59     while (fread(&expected_match, sizeof expected_match, 1, flows)) {
  60         struct ofpbuf *packet;
  61         struct ofp10_match extracted_match;
  62         struct match match;
  63         struct flow flow;
  64         n++;
  65
  66         retval = ovs_pcap_read(pcap, &packet, NULL);
  67         if (retval == EOF) {
  68             ovs_fatal(0, "unexpected end of file reading pcap file");
  69         } else if (retval) {
  70             ovs_fatal(retval, "error reading pcap file");
  71         }
  72
  73         flow_extract(packet, NULL, &flow);
  74         flow.in_port.ofp_port = u16_to_ofp(1);
  75
  76         match_wc_init(&match, &flow);
  77         ofputil_match_to_ofp10_match(&match, &extracted_match);
  78
  79         if (memcmp(&expected_match, &extracted_match, sizeof expected_match)) {
  80             char *exp_s = ofp10_match_to_string(&expected_match, 2);
  81             char *got_s = ofp10_match_to_string(&extracted_match, 2);
  82             errors++;
  83             printf("mismatch on packet #%d (1-based).\n", n);
  84             printf("Packet:\n");
  85             ofp_print_packet(stdout, ofpbuf_data(packet), ofpbuf_size(packet));
  86             ovs_hex_dump(stdout, ofpbuf_data(packet), ofpbuf_size(packet), 0, true);
  87             match_print(&match);
  88             printf("Expected flow:\n%s\n", exp_s);
  89             printf("Actually extracted flow:\n%s\n", got_s);
  90             ovs_hex_dump(stdout, &expected_match, sizeof expected_match, 0, false);
  91             ovs_hex_dump(stdout, &extracted_match, sizeof extracted_match, 0, false);
  92             printf("\n");
  93             free(exp_s);
  94             free(got_s);
  95         }
  96
  97         ofpbuf_delete(packet);
  98     }
  99     printf("checked %d packets, %d errors\n", n, errors);
 100     exit(errors != 0);
 101 }
 102
 103 OVSTEST_REGISTER("test-flows", test_flows_main);