tests/test-flows.c

   1 /*
   2  * Copyright (c) 2009, 2010, 2011 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.h"
  29 #include "util.h"
  30 #include "vlog.h"
  31
  32 #undef NDEBUG
  33 #include <assert.h>
  34
  35 int
  36 main(int argc OVS_UNUSED, char *argv[])
  37 {
  38     struct ofp_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 = 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         struct cls_rule rule;
  60         struct flow flow;
  61
  62         n++;
  63
  64         retval = pcap_read(pcap, &packet);
  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, 0, 0, 1, &flow);
  72         cls_rule_init_exact(&flow, 0, &rule);
  73         ofputil_cls_rule_to_match(&rule, &extracted_match);
  74
  75         if (memcmp(&expected_match, &extracted_match, sizeof expected_match)) {
  76             char *exp_s = ofp_match_to_string(&expected_match, 2);
  77             char *got_s = ofp_match_to_string(&extracted_match, 2);
  78             errors++;
  79             printf("mismatch on packet #%d (1-based).\n", n);
  80             printf("Packet:\n");
  81             ofp_print_packet(stdout, packet->data, packet->size);
  82             ovs_hex_dump(stdout, packet->data, packet->size, 0, true);
  83             cls_rule_print(&rule);
  84             printf("Expected flow:\n%s\n", exp_s);
  85             printf("Actually extracted flow:\n%s\n", got_s);
  86             ovs_hex_dump(stdout, &expected_match, sizeof expected_match, 0, false);
  87             ovs_hex_dump(stdout, &extracted_match, sizeof extracted_match, 0, false);
  88             printf("\n");
  89             free(exp_s);
  90             free(got_s);
  91         }
  92
  93         ofpbuf_delete(packet);
  94     }
  95     printf("checked %d packets, %d errors\n", n, errors);
  96     return errors != 0;
  97 }
  98