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 #include "flow.h"
  19 #include <errno.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include "classifier.h"
  23 #include "openflow/openflow.h"
  24 #include "timeval.h"
  25 #include "ofpbuf.h"
  26 #include "ofp-print.h"
  27 #include "ofp-util.h"
  28 #include "pcap-file.h"
  29 #include "util.h"
  30 #include "vlog.h"
  31 #include "ovstest.h"
  32
  33 #undef NDEBUG
  34 #include <assert.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, *pcap;
  41     int retval;
  42     int n = 0, errors = 0;
  43
  44     set_program_name(argv[0]);
  45
  46     flows = stdin;
  47     pcap = fdopen(3, "rb");
  48     if (!pcap) {
  49         ovs_fatal(errno, "failed to open fd 3 for reading");
  50     }
  51
  52     retval = ovs_pcap_read_header(pcap);
  53     if (retval) {
  54         ovs_fatal(retval > 0 ? retval : 0, "reading pcap header failed");
  55     }
  56
  57     while (fread(&expected_match, sizeof expected_match, 1, flows)) {
  58         struct ofpbuf *packet;
  59         struct ofp10_match extracted_match;
  60         struct match match;
  61         struct flow flow;
  62         n++;
  63
  64         retval = ovs_pcap_read(pcap, &packet, NULL);
  65         if (retval == EOF) {
  66             ovs_fatal(0, "unexpected end of file reading pcap file");
  67         } else if (retval) {
  68             ovs_fatal(retval, "error reading pcap file");
  69         }
  70
  71         flow_extract(packet, NULL, &flow);
  72         flow.in_port.ofp_port = u16_to_ofp(1);
  73
  74         match_wc_init(&match, &flow);
  75         ofputil_match_to_ofp10_match(&match, &extracted_match);
  76
  77         if (memcmp(&expected_match, &extracted_match, sizeof expected_match)) {
  78             char *exp_s = ofp10_match_to_string(&expected_match, 2);
  79             char *got_s = ofp10_match_to_string(&extracted_match, 2);
  80             errors++;
  81             printf("mismatch on packet #%d (1-based).\n", n);
  82             printf("Packet:\n");
  83             ofp_print_packet(stdout, ofpbuf_data(packet), ofpbuf_size(packet));
  84             ovs_hex_dump(stdout, ofpbuf_data(packet), ofpbuf_size(packet), 0, true);
  85             match_print(&match);
  86             printf("Expected flow:\n%s\n", exp_s);
  87             printf("Actually extracted flow:\n%s\n", got_s);
  88             ovs_hex_dump(stdout, &expected_match, sizeof expected_match, 0, false);
  89             ovs_hex_dump(stdout, &extracted_match, sizeof extracted_match, 0, false);
  90             printf("\n");
  91             free(exp_s);
  92             free(got_s);
  93         }
  94
  95         ofpbuf_delete(packet);
  96     }
  97     printf("checked %d packets, %d errors\n", n, errors);
  98     exit(errors != 0);
  99 }
 100
 101 OVSTEST_REGISTER("test-flows", test_flows_main);