tests/test-flows.c

   1 /*
   2  * Copyright (c) 2009, 2010 Nicira Networks.
   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 "openflow/openflow.h"
  23 #include "timeval.h"
  24 #include "ofpbuf.h"
  25 #include "ofp-print.h"
  26 #include "pcap.h"
  27 #include "util.h"
  28 #include "vlog.h"
  29
  30 #undef NDEBUG
  31 #include <assert.h>
  32
  33 int
  34 main(int argc OVS_UNUSED, char *argv[])
  35 {
  36     struct ofp_match expected_match;
  37     FILE *flows, *pcap;
  38     int retval;
  39     int n = 0, errors = 0;
  40
  41     set_program_name(argv[0]);
  42     time_init();
  43     vlog_init();
  44
  45     flows = stdin;
  46     pcap = fdopen(3, "rb");
  47     if (!pcap) {
  48         ovs_fatal(errno, "failed to open fd 3 for reading");
  49     }
  50
  51     retval = pcap_read_header(pcap);
  52     if (retval) {
  53         ovs_fatal(retval > 0 ? retval : 0, "reading pcap header failed");
  54     }
  55
  56     while (fread(&expected_match, sizeof expected_match, 1, flows)) {
  57         struct ofpbuf *packet;
  58         struct ofp_match extracted_match;
  59         flow_t flow;
  60
  61         n++;
  62
  63         retval = pcap_read(pcap, &packet);
  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, 1, &flow);
  71         flow_to_match(&flow, 0, &extracted_match);
  72
  73         if (memcmp(&expected_match, &extracted_match, sizeof expected_match)) {
  74             char *exp_s = ofp_match_to_string(&expected_match, 2);
  75             char *got_s = ofp_match_to_string(&extracted_match, 2);
  76             errors++;
  77             printf("mismatch on packet #%d (1-based).\n", n);
  78             printf("Packet:\n");
  79             ofp_print_packet(stdout, packet->data, packet->size, packet->size);
  80             printf("Expected flow:\n%s\n", exp_s);
  81             printf("Actually extracted flow:\n%s\n", got_s);
  82             printf("\n");
  83             free(exp_s);
  84             free(got_s);
  85         }
  86
  87         ofpbuf_delete(packet);
  88     }
  89     printf("checked %d packets, %d errors\n", n, errors);
  90     return errors != 0;
  91 }
  92