From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vnet/unix/pcap2pg.c | 182 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 src/vnet/unix/pcap2pg.c (limited to 'src/vnet/unix/pcap2pg.c') diff --git a/src/vnet/unix/pcap2pg.c b/src/vnet/unix/pcap2pg.c new file mode 100644 index 00000000..217a61f4 --- /dev/null +++ b/src/vnet/unix/pcap2pg.c @@ -0,0 +1,182 @@ +/* + * pcap2pg.c: convert pcap input to pg input + * + * Copyright (c) 2013 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/** + * @file + * @brief Functions to convert PCAP file format to VPP PG (Packet Generator) + * + */ +#include +#include +#include + +pcap_main_t pcap_main; + +/** + * @brief char * to seed a PG file + */ +static char * pg_fmt = + "packet-generator new {\n" + " name s%d\n" + " limit 1\n" + " size %d-%d\n" + " node ethernet-input\n"; + + +/** + * @brief Packet Generator Stream boilerplate + * + * @param *ofp - FILE + * @param i - int + * @param *pkt - u8 + */ +void stream_boilerplate (FILE *ofp, int i, u8 * pkt) +{ + fformat(ofp, pg_fmt, i, vec_len(pkt), vec_len(pkt)); +} + +/** + * @brief Conversion of PCAP file to PG file format + * + * @param *pm - pcap_main_t + * @param *ofp - FILE + * + * @return rc - int + * + */ +int pcap2pg (pcap_main_t * pm, FILE *ofp) +{ + int i, j; + u8 *pkt; + + for (i = 0; i < vec_len (pm->packets_read); i++) + { + int offset; + ethernet_header_t * h; + u64 ethertype; + + pkt = pm->packets_read[i]; + h = (ethernet_header_t *)pkt; + + stream_boilerplate (ofp, i, pkt); + + fformat (ofp, " data {\n"); + + ethertype = clib_net_to_host_u16 (h->type); + + /** + * In vnet terms, packet generator interfaces are not ethernets. + * They don't have vlan tables. + * This transforms captured 802.1q VLAN packets into + * regular Ethernet packets. + */ + if (ethertype == 0x8100 /* 802.1q vlan */) + { + u16 * vlan_ethertype = (u16 *)(h+1); + ethertype = clib_net_to_host_u16(vlan_ethertype[0]); + offset = 18; + } + else + offset = 14; + + fformat (ofp, + " 0x%04x: %02x%02x.%02x%02x.%02x%02x" + " -> %02x%02x.%02x%02x.%02x%02x\n", + ethertype, + h->src_address[0], + h->src_address[1], + h->src_address[2], + h->src_address[3], + h->src_address[4], + h->src_address[5], + h->dst_address[0], + h->dst_address[1], + h->dst_address[2], + h->dst_address[3], + h->dst_address[4], + h->dst_address[5]); + + fformat (ofp, " hex 0x"); + + for (j = offset; j < vec_len (pkt); j++) + fformat (ofp, "%02x", pkt[j]); + + fformat (ofp, " }\n"); + fformat (ofp, "}\n\n"); + } + return 0; +} + +/** + * @brief pcap2pg. + * usage: pcap2pg -i [-o ] + */ +int main (int argc, char **argv) +{ + unformat_input_t input; + pcap_main_t * pm = &pcap_main; + u8 * input_file = 0, * output_file = 0; + FILE * ofp; + clib_error_t * error; + + unformat_init_command_line (&input, argv); + + while (unformat_check_input (&input) != UNFORMAT_END_OF_INPUT) + { + if (unformat(&input, "-i %s", &input_file) + || unformat (&input, "input %s", &input_file)) + ; + else if (unformat (&input, "-o %s", &output_file) + || unformat (&input, "output %s", &output_file)) + ; + else + { + usage: + fformat(stderr, + "usage: pcap2pg -i [-o ]\n"); + exit (1); + } + } + + if (input_file == 0) + goto usage; + + pm->file_name = (char *)input_file; + error = pcap_read (pm); + + if (error) + { + clib_error_report (error); + exit (1); + } + + if (output_file) + { + ofp = fopen ((char *)output_file, "rw"); + if (ofp == NULL) + clib_unix_warning ("Couldn't create '%s'", output_file); + exit (1); + } + else + { + ofp = stdout; + } + + pcap2pg (pm, ofp); + + fclose (ofp); + exit (0); +} -- cgit 1.2.3-korg