net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 1 | /* |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 2 | * m_pedit.c packet editor: IPV4/6 header |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can distribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | * |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 9 | * Authors: J Hadi Salim (hadi@cyberus.ca) |
| 10 | * |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 11 | */ |
| 12 | |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <unistd.h> |
| 16 | #include <syslog.h> |
| 17 | #include <fcntl.h> |
| 18 | #include <sys/socket.h> |
| 19 | #include <netinet/in.h> |
| 20 | #include <arpa/inet.h> |
| 21 | #include <string.h> |
| 22 | #include "utils.h" |
| 23 | #include "tc_util.h" |
| 24 | #include "m_pedit.h" |
| 25 | |
| 26 | static int |
Phil Sutter | 952f89d | 2016-03-22 15:16:21 +0100 | [diff] [blame] | 27 | parse_ip(int *argc_p, char ***argv_p, |
| 28 | struct tc_pedit_sel *sel, struct tc_pedit_key *tkey) |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 29 | { |
| 30 | int res = -1; |
| 31 | int argc = *argc_p; |
| 32 | char **argv = *argv_p; |
| 33 | |
| 34 | if (argc < 2) |
| 35 | return -1; |
| 36 | |
| 37 | if (strcmp(*argv, "src") == 0) { |
| 38 | NEXT_ARG(); |
| 39 | tkey->off = 12; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 40 | res = parse_cmd(&argc, &argv, 4, TIPV4, RU32, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 41 | goto done; |
| 42 | } |
| 43 | if (strcmp(*argv, "dst") == 0) { |
| 44 | NEXT_ARG(); |
| 45 | tkey->off = 16; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 46 | res = parse_cmd(&argc, &argv, 4, TIPV4, RU32, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 47 | goto done; |
| 48 | } |
| 49 | /* jamal - look at these and make them either old or new |
| 50 | ** scheme given diffserv |
| 51 | ** dont forget the CE bit |
| 52 | */ |
| 53 | if (strcmp(*argv, "tos") == 0 || matches(*argv, "dsfield") == 0) { |
| 54 | NEXT_ARG(); |
| 55 | tkey->off = 1; |
Phil Sutter | 952f89d | 2016-03-22 15:16:21 +0100 | [diff] [blame] | 56 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 57 | goto done; |
| 58 | } |
| 59 | if (strcmp(*argv, "ihl") == 0) { |
| 60 | NEXT_ARG(); |
| 61 | tkey->off = 0; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 62 | res = parse_cmd(&argc, &argv, 1, TU32, 0x0f, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 63 | goto done; |
| 64 | } |
| 65 | if (strcmp(*argv, "protocol") == 0) { |
| 66 | NEXT_ARG(); |
| 67 | tkey->off = 9; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 68 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 69 | goto done; |
| 70 | } |
| 71 | /* jamal - fix this */ |
| 72 | if (matches(*argv, "precedence") == 0) { |
| 73 | NEXT_ARG(); |
| 74 | tkey->off = 1; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 75 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 76 | goto done; |
| 77 | } |
| 78 | /* jamal - validate this at some point */ |
| 79 | if (strcmp(*argv, "nofrag") == 0) { |
| 80 | NEXT_ARG(); |
| 81 | tkey->off = 6; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 82 | res = parse_cmd(&argc, &argv, 1, TU32, 0x3F, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 83 | goto done; |
| 84 | } |
| 85 | /* jamal - validate this at some point */ |
| 86 | if (strcmp(*argv, "firstfrag") == 0) { |
| 87 | NEXT_ARG(); |
| 88 | tkey->off = 6; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 89 | res = parse_cmd(&argc, &argv, 1, TU32, 0x1F, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 90 | goto done; |
| 91 | } |
| 92 | if (strcmp(*argv, "ce") == 0) { |
| 93 | NEXT_ARG(); |
| 94 | tkey->off = 6; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 95 | res = parse_cmd(&argc, &argv, 1, TU32, 0x80, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 96 | goto done; |
| 97 | } |
| 98 | if (strcmp(*argv, "df") == 0) { |
| 99 | NEXT_ARG(); |
| 100 | tkey->off = 6; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 101 | res = parse_cmd(&argc, &argv, 1, TU32, 0x40, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 102 | goto done; |
| 103 | } |
| 104 | if (strcmp(*argv, "mf") == 0) { |
| 105 | NEXT_ARG(); |
| 106 | tkey->off = 6; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 107 | res = parse_cmd(&argc, &argv, 1, TU32, 0x20, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 108 | goto done; |
| 109 | } |
| 110 | if (strcmp(*argv, "dport") == 0) { |
| 111 | NEXT_ARG(); |
| 112 | tkey->off = 22; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 113 | res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 114 | goto done; |
| 115 | } |
| 116 | if (strcmp(*argv, "sport") == 0) { |
| 117 | NEXT_ARG(); |
| 118 | tkey->off = 20; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 119 | res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 120 | goto done; |
| 121 | } |
| 122 | if (strcmp(*argv, "icmp_type") == 0) { |
| 123 | NEXT_ARG(); |
| 124 | tkey->off = 20; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 125 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 126 | goto done; |
| 127 | } |
| 128 | if (strcmp(*argv, "icmp_code") == 0) { |
| 129 | NEXT_ARG(); |
| 130 | tkey->off = 20; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 131 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 132 | goto done; |
| 133 | } |
| 134 | return -1; |
| 135 | |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 136 | done: |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 137 | *argc_p = argc; |
| 138 | *argv_p = argv; |
| 139 | return res; |
| 140 | } |
| 141 | |
| 142 | static int |
Phil Sutter | 952f89d | 2016-03-22 15:16:21 +0100 | [diff] [blame] | 143 | parse_ip6(int *argc_p, char ***argv_p, |
| 144 | struct tc_pedit_sel *sel, struct tc_pedit_key *tkey) |
net[shemminger]!shemminger | 7e7c737 | 2005-01-17 23:32:51 +0000 | [diff] [blame] | 145 | { |
| 146 | int res = -1; |
| 147 | return res; |
| 148 | } |
| 149 | |
| 150 | struct m_pedit_util p_pedit_ip = { |
| 151 | NULL, |
| 152 | "ip", |
| 153 | parse_ip, |
| 154 | }; |
| 155 | |
| 156 | |
| 157 | struct m_pedit_util p_pedit_ip6 = { |
| 158 | NULL, |
| 159 | "ip6", |
| 160 | parse_ip6, |
| 161 | }; |