mirror of
https://github.com/openvswitch/ovs
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b6e840aed0
PCAP header magic numbers are different for microsecond and nanosecond resolution timestamps. This patch adds support for understanding the difference and reporting the time correctly with ovs_pcap_read(). When writing pcap files, OVS will always use microsecond resolution, so no new calculations were added to those functions. Signed-off-by: Mark Michelson <mmichels@redhat.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
102 lines
3.3 KiB
C
102 lines
3.3 KiB
C
/*
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* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2017 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#undef NDEBUG
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#include "flow.h"
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#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "classifier.h"
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#include "openflow/openflow.h"
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#include "openvswitch/ofp-match.h"
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#include "openvswitch/ofp-print.h"
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#include "openvswitch/ofpbuf.h"
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#include "openvswitch/vlog.h"
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#include "ovstest.h"
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#include "dp-packet.h"
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#include "pcap-file.h"
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#include "timeval.h"
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#include "util.h"
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static void
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test_flows_main(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
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{
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struct ofp10_match expected_match;
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FILE *flows;
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struct pcap_file *pcap;
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int retval;
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int n = 0, errors = 0;
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set_program_name(argv[0]);
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flows = fopen(argv[1], "rb");
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if (!flows) {
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ovs_fatal(errno, "failed to open %s", argv[1]);
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}
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pcap = ovs_pcap_open(argv[2], "rb");
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if (!pcap) {
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ovs_fatal(errno, "failed to open %s", argv[2]);
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}
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while (fread(&expected_match, sizeof expected_match, 1, flows)) {
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struct dp_packet *packet;
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struct ofp10_match extracted_match;
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struct match match;
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struct flow flow;
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n++;
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retval = ovs_pcap_read(pcap, &packet, NULL);
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if (retval == EOF) {
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ovs_fatal(0, "unexpected end of file reading pcap file");
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} else if (retval) {
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ovs_fatal(retval, "error reading pcap file");
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}
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flow_extract(packet, &flow);
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flow.in_port.ofp_port = u16_to_ofp(1);
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match_wc_init(&match, &flow);
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ofputil_match_to_ofp10_match(&match, &extracted_match);
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if (memcmp(&expected_match, &extracted_match, sizeof expected_match)) {
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char *exp_s = ofp10_match_to_string(&expected_match, NULL, 2);
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char *got_s = ofp10_match_to_string(&extracted_match, NULL, 2);
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errors++;
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printf("mismatch on packet #%d (1-based).\n", n);
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printf("Packet:\n");
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ofp_print_packet(stdout, dp_packet_data(packet), dp_packet_size(packet), htonl(PT_ETH));
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ovs_hex_dump(stdout, dp_packet_data(packet), dp_packet_size(packet), 0, true);
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match_print(&match, NULL);
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printf("Expected flow:\n%s\n", exp_s);
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printf("Actually extracted flow:\n%s\n", got_s);
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ovs_hex_dump(stdout, &expected_match, sizeof expected_match, 0, false);
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ovs_hex_dump(stdout, &extracted_match, sizeof extracted_match, 0, false);
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printf("\n");
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free(exp_s);
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free(got_s);
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}
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dp_packet_delete(packet);
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}
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ovs_pcap_close(pcap);
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printf("checked %d packets, %d errors\n", n, errors);
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exit(errors != 0);
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}
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OVSTEST_REGISTER("test-flows", test_flows_main);
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