tests/test-flows.c

   1 /*
   2  * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2017 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 "openflow/openflow.h"
  26 #include "openvswitch/ofp-match.h"
  27 #include "openvswitch/ofp-print.h"
  28 #include "openvswitch/ofpbuf.h"
  29 #include "openvswitch/vlog.h"
  30 #include "ovstest.h"
  31 #include "dp-packet.h"
  32 #include "pcap-file.h"
  33 #include "timeval.h"
  34 #include "util.h"
  35
  36 static void
  37 test_flows_main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
  38 {
  39     struct ofp10_match expected_match;
  40     FILE *flows;
  41     struct pcap_file *pcap;
  42     int retval;
  43     int n = 0, errors = 0;
  44
  45     set_program_name(argv[0]);
  46
  47     flows = fopen(argv[1], "rb");
  48     if (!flows) {
  49         ovs_fatal(errno, "failed to open %s", argv[1]);
  50     }
  51     pcap = ovs_pcap_open(argv[2], "rb");
  52     if (!pcap) {
  53         ovs_fatal(errno, "failed to open %s", argv[2]);
  54     }
  55
  56     while (fread(&expected_match, sizeof expected_match, 1, flows)) {
  57         struct dp_packet *packet;
  58         struct ofp10_match extracted_match;
  59         struct match match;
  60         struct flow flow;
  61         n++;
  62
  63         retval = ovs_pcap_read(pcap, &packet, NULL);
  64         if (retval == EOF) {
  65             ovs_fatal(0, "unexpected end of file reading pcap file");
  66         } else if (retval) {
  67             ovs_fatal(retval, "error reading pcap file");
  68         }
  69
  70         flow_extract(packet, &flow);
  71         flow.in_port.ofp_port = u16_to_ofp(1);
  72
  73         match_wc_init(&match, &flow);
  74         ofputil_match_to_ofp10_match(&match, &extracted_match);
  75
  76         if (memcmp(&expected_match, &extracted_match, sizeof expected_match)) {
  77             char *exp_s = ofp10_match_to_string(&expected_match, NULL, 2);
  78             char *got_s = ofp10_match_to_string(&extracted_match, NULL, 2);
  79             errors++;
  80             printf("mismatch on packet #%d (1-based).\n", n);
  81             printf("Packet:\n");
  82             ofp_print_packet(stdout, dp_packet_data(packet), dp_packet_size(packet), htonl(PT_ETH));
  83             ovs_hex_dump(stdout, dp_packet_data(packet), dp_packet_size(packet), 0, true);
  84             match_print(&match, NULL);
  85             printf("Expected flow:\n%s\n", exp_s);
  86             printf("Actually extracted flow:\n%s\n", got_s);
  87             ovs_hex_dump(stdout, &expected_match, sizeof expected_match, 0, false);
  88             ovs_hex_dump(stdout, &extracted_match, sizeof extracted_match, 0, false);
  89             printf("\n");
  90             free(exp_s);
  91             free(got_s);
  92         }
  93
  94         dp_packet_delete(packet);
  95     }
  96     ovs_pcap_close(pcap);
  97     printf("checked %d packets, %d errors\n", n, errors);
  98     exit(errors != 0);
  99 }
 100
 101 OVSTEST_REGISTER("test-flows", test_flows_main);