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Commit | Line | Data |
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7e7c7372 | 1 | /* |
ae665a52 | 2 | * m_pedit.c packet editor: IPV4/6 header |
7e7c7372 | 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 | * | |
ae665a52 SH |
9 | * Authors: J Hadi Salim (hadi@cyberus.ca) |
10 | * | |
7e7c7372 | 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 | |
952f89de | 27 | parse_ip(int *argc_p, char ***argv_p, |
7c71a40c | 28 | struct m_pedit_sel *sel, struct m_pedit_key *tkey) |
7e7c7372 | 29 | { |
30 | int res = -1; | |
31 | int argc = *argc_p; | |
32 | char **argv = *argv_p; | |
33 | ||
34 | if (argc < 2) | |
35 | return -1; | |
36 | ||
7c71a40c AV |
37 | tkey->htype = sel->extended ? |
38 | TCA_PEDIT_KEY_EX_HDR_TYPE_IP4 : | |
39 | TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK; | |
40 | ||
7e7c7372 | 41 | if (strcmp(*argv, "src") == 0) { |
42 | NEXT_ARG(); | |
43 | tkey->off = 12; | |
32a121cb | 44 | res = parse_cmd(&argc, &argv, 4, TIPV4, RU32, sel, tkey); |
7e7c7372 | 45 | goto done; |
46 | } | |
47 | if (strcmp(*argv, "dst") == 0) { | |
48 | NEXT_ARG(); | |
49 | tkey->off = 16; | |
32a121cb | 50 | res = parse_cmd(&argc, &argv, 4, TIPV4, RU32, sel, tkey); |
7e7c7372 | 51 | goto done; |
52 | } | |
53 | /* jamal - look at these and make them either old or new | |
54 | ** scheme given diffserv | |
55 | ** dont forget the CE bit | |
56 | */ | |
57 | if (strcmp(*argv, "tos") == 0 || matches(*argv, "dsfield") == 0) { | |
58 | NEXT_ARG(); | |
59 | tkey->off = 1; | |
952f89de | 60 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
7e7c7372 | 61 | goto done; |
62 | } | |
63 | if (strcmp(*argv, "ihl") == 0) { | |
64 | NEXT_ARG(); | |
65 | tkey->off = 0; | |
32a121cb | 66 | res = parse_cmd(&argc, &argv, 1, TU32, 0x0f, sel, tkey); |
7e7c7372 | 67 | goto done; |
68 | } | |
8d193d96 AV |
69 | if (strcmp(*argv, "ttl") == 0) { |
70 | NEXT_ARG(); | |
71 | tkey->off = 8; | |
72 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); | |
73 | goto done; | |
74 | } | |
7e7c7372 | 75 | if (strcmp(*argv, "protocol") == 0) { |
76 | NEXT_ARG(); | |
77 | tkey->off = 9; | |
32a121cb | 78 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
7e7c7372 | 79 | goto done; |
80 | } | |
81 | /* jamal - fix this */ | |
82 | if (matches(*argv, "precedence") == 0) { | |
83 | NEXT_ARG(); | |
84 | tkey->off = 1; | |
32a121cb | 85 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
7e7c7372 | 86 | goto done; |
87 | } | |
88 | /* jamal - validate this at some point */ | |
89 | if (strcmp(*argv, "nofrag") == 0) { | |
90 | NEXT_ARG(); | |
91 | tkey->off = 6; | |
32a121cb | 92 | res = parse_cmd(&argc, &argv, 1, TU32, 0x3F, sel, tkey); |
7e7c7372 | 93 | goto done; |
94 | } | |
95 | /* jamal - validate this at some point */ | |
96 | if (strcmp(*argv, "firstfrag") == 0) { | |
97 | NEXT_ARG(); | |
98 | tkey->off = 6; | |
32a121cb | 99 | res = parse_cmd(&argc, &argv, 1, TU32, 0x1F, sel, tkey); |
7e7c7372 | 100 | goto done; |
101 | } | |
102 | if (strcmp(*argv, "ce") == 0) { | |
103 | NEXT_ARG(); | |
104 | tkey->off = 6; | |
32a121cb | 105 | res = parse_cmd(&argc, &argv, 1, TU32, 0x80, sel, tkey); |
7e7c7372 | 106 | goto done; |
107 | } | |
108 | if (strcmp(*argv, "df") == 0) { | |
109 | NEXT_ARG(); | |
110 | tkey->off = 6; | |
32a121cb | 111 | res = parse_cmd(&argc, &argv, 1, TU32, 0x40, sel, tkey); |
7e7c7372 | 112 | goto done; |
113 | } | |
114 | if (strcmp(*argv, "mf") == 0) { | |
115 | NEXT_ARG(); | |
116 | tkey->off = 6; | |
32a121cb | 117 | res = parse_cmd(&argc, &argv, 1, TU32, 0x20, sel, tkey); |
7e7c7372 | 118 | goto done; |
119 | } | |
7c71a40c AV |
120 | |
121 | if (sel->extended) | |
122 | return -1; /* fields located outside IP header should be | |
123 | * addressed using the relevant header type in | |
124 | * extended pedit kABI | |
125 | */ | |
126 | ||
7e7c7372 | 127 | if (strcmp(*argv, "dport") == 0) { |
128 | NEXT_ARG(); | |
129 | tkey->off = 22; | |
32a121cb | 130 | res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey); |
7e7c7372 | 131 | goto done; |
132 | } | |
133 | if (strcmp(*argv, "sport") == 0) { | |
134 | NEXT_ARG(); | |
135 | tkey->off = 20; | |
32a121cb | 136 | res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey); |
7e7c7372 | 137 | goto done; |
138 | } | |
139 | if (strcmp(*argv, "icmp_type") == 0) { | |
140 | NEXT_ARG(); | |
141 | tkey->off = 20; | |
32a121cb | 142 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
7e7c7372 | 143 | goto done; |
144 | } | |
145 | if (strcmp(*argv, "icmp_code") == 0) { | |
146 | NEXT_ARG(); | |
147 | tkey->off = 20; | |
32a121cb | 148 | res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey); |
7e7c7372 | 149 | goto done; |
150 | } | |
151 | return -1; | |
152 | ||
32a121cb | 153 | done: |
7e7c7372 | 154 | *argc_p = argc; |
155 | *argv_p = argv; | |
156 | return res; | |
157 | } | |
158 | ||
159 | static int | |
952f89de | 160 | parse_ip6(int *argc_p, char ***argv_p, |
7c71a40c | 161 | struct m_pedit_sel *sel, struct m_pedit_key *tkey) |
7e7c7372 | 162 | { |
163 | int res = -1; | |
164 | return res; | |
165 | } | |
166 | ||
167 | struct m_pedit_util p_pedit_ip = { | |
168 | NULL, | |
169 | "ip", | |
170 | parse_ip, | |
171 | }; | |
172 | ||
173 | ||
174 | struct m_pedit_util p_pedit_ip6 = { | |
175 | NULL, | |
176 | "ip6", | |
177 | parse_ip6, | |
178 | }; |