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| /*
| * p_ip6.c packet editor: IPV6 header
| *
| * This program is free software; you can distribute it and/or
| * modify it under the terms of the GNU General Public License
| * as published by the Free Software Foundation; either version
| * 2 of the License, or (at your option) any later version.
| *
| * Authors: Amir Vadai <amir@vadai.me>
| *
| */
|
| #include <stdio.h>
| #include <stdlib.h>
| #include <unistd.h>
| #include <syslog.h>
| #include <fcntl.h>
| #include <sys/socket.h>
| #include <netinet/in.h>
| #include <arpa/inet.h>
| #include <string.h>
| #include "utils.h"
| #include "tc_util.h"
| #include "m_pedit.h"
|
| static int
| parse_ip6(int *argc_p, char ***argv_p,
| struct m_pedit_sel *sel, struct m_pedit_key *tkey)
| {
| int res = -1;
| int argc = *argc_p;
| char **argv = *argv_p;
|
| if (argc < 2)
| return -1;
|
| if (!sel->extended)
| return -1;
|
| tkey->htype = TCA_PEDIT_KEY_EX_HDR_TYPE_IP6;
|
| if (strcmp(*argv, "src") == 0) {
| NEXT_ARG();
| tkey->off = 8;
| res = parse_cmd(&argc, &argv, 16, TIPV6, RU32, sel, tkey);
| goto done;
| }
| if (strcmp(*argv, "dst") == 0) {
| NEXT_ARG();
| tkey->off = 24;
| res = parse_cmd(&argc, &argv, 16, TIPV6, RU32, sel, tkey);
| goto done;
| }
| if (strcmp(*argv, "flow_lbl") == 0) {
| NEXT_ARG();
| tkey->off = 0;
| res = parse_cmd(&argc, &argv, 4, TU32, 0x0007ffff, sel, tkey);
| goto done;
| }
| if (strcmp(*argv, "payload_len") == 0) {
| NEXT_ARG();
| tkey->off = 4;
| res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey);
| goto done;
| }
| if (strcmp(*argv, "nexthdr") == 0) {
| NEXT_ARG();
| tkey->off = 6;
| res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey);
| goto done;
| }
| if (strcmp(*argv, "hoplimit") == 0) {
| NEXT_ARG();
| tkey->off = 7;
| res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey);
| goto done;
| }
|
| return -1;
|
| done:
| *argc_p = argc;
| *argv_p = argv;
| return res;
| }
|
| struct m_pedit_util p_pedit_ip6 = {
| NULL,
| "ipv6",
| parse_ip6,
| };
|
|
