[mirror_iproute2.git] / tc / m_skbedit.c

/*
 * m_skbedit.c		SKB Editing module
 *
 * Copyright (c) 2008, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses>.
 *
 * Authors:	Alexander Duyck <alexander.h.duyck@intel.com>
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "utils.h"
#include "tc_util.h"
#include <linux/tc_act/tc_skbedit.h>
#include <linux/if_packet.h>

static void explain(void)
{
	fprintf(stderr, "Usage: ... skbedit <[QM] [PM] [MM] [PT]>\n"
		"QM = queue_mapping QUEUE_MAPPING\n"
		"PM = priority PRIORITY\n"
		"MM = mark MARK\n"
		"PT = ptype PACKETYPE\n"
		"PACKETYPE = is one of:\n"
		"  host, otherhost, broadcast, multicast\n"
		"QUEUE_MAPPING = device transmit queue to use\n"
		"PRIORITY = classID to assign to priority field\n"
		"MARK = firewall mark to set\n");
}

static void
usage(void)
{
	explain();
	exit(-1);
}

static int
parse_skbedit(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
	      struct nlmsghdr *n)
{
	int argc = *argc_p;
	char **argv = *argv_p;
	int ok = 0;
	struct rtattr *tail;
	unsigned int tmp;
	__u16 queue_mapping, ptype;
	__u32 flags = 0, priority, mark;
	struct tc_skbedit sel = { 0 };

	if (matches(*argv, "skbedit") != 0)
		return -1;

	NEXT_ARG();

	while (argc > 0) {
		if (matches(*argv, "queue_mapping") == 0) {
			flags |= SKBEDIT_F_QUEUE_MAPPING;
			NEXT_ARG();
			if (get_unsigned(&tmp, *argv, 10) || tmp > 65535) {
				fprintf(stderr, "Illegal queue_mapping\n");
				return -1;
			}
			queue_mapping = tmp;
			ok++;
		} else if (matches(*argv, "priority") == 0) {
			flags |= SKBEDIT_F_PRIORITY;
			NEXT_ARG();
			if (get_tc_classid(&priority, *argv)) {
				fprintf(stderr, "Illegal priority\n");
				return -1;
			}
			ok++;
		} else if (matches(*argv, "mark") == 0) {
			flags |= SKBEDIT_F_MARK;
			NEXT_ARG();
			if (get_u32(&mark, *argv, 0)) {
				fprintf(stderr, "Illegal mark\n");
				return -1;
			}
			ok++;
		} else if (matches(*argv, "ptype") == 0) {

			NEXT_ARG();
			if (matches(*argv, "host") == 0) {
				ptype = PACKET_HOST;
			} else if (matches(*argv, "broadcast") == 0) {
				ptype = PACKET_BROADCAST;
			} else if (matches(*argv, "multicast") == 0) {
				ptype = PACKET_MULTICAST;
			} else if (matches(*argv, "otherhost") == 0) {
				ptype = PACKET_OTHERHOST;
			} else {
				fprintf(stderr, "Illegal ptype (%s)\n",
					*argv);
				return -1;
			}
			flags |= SKBEDIT_F_PTYPE;
			ok++;
		} else if (matches(*argv, "help") == 0) {
			usage();
		} else {
			break;
		}
		argc--;
		argv++;
	}

	parse_action_control_dflt(&argc, &argv, &sel.action,
				  false, TC_ACT_PIPE);

	if (argc) {
		if (matches(*argv, "index") == 0) {
			NEXT_ARG();
			if (get_u32(&sel.index, *argv, 10)) {
				fprintf(stderr, "Pedit: Illegal \"index\"\n");
				return -1;
			}
			argc--;
			argv++;
			ok++;
		}
	}

	if (!ok) {
		explain();
		return -1;
	}


	tail = addattr_nest(n, MAX_MSG, tca_id);
	addattr_l(n, MAX_MSG, TCA_SKBEDIT_PARMS, &sel, sizeof(sel));
	if (flags & SKBEDIT_F_QUEUE_MAPPING)
		addattr_l(n, MAX_MSG, TCA_SKBEDIT_QUEUE_MAPPING,
			  &queue_mapping, sizeof(queue_mapping));
	if (flags & SKBEDIT_F_PRIORITY)
		addattr_l(n, MAX_MSG, TCA_SKBEDIT_PRIORITY,
			  &priority, sizeof(priority));
	if (flags & SKBEDIT_F_MARK)
		addattr_l(n, MAX_MSG, TCA_SKBEDIT_MARK,
			  &mark, sizeof(mark));
	if (flags & SKBEDIT_F_PTYPE)
		addattr_l(n, MAX_MSG, TCA_SKBEDIT_PTYPE,
			  &ptype, sizeof(ptype));
	addattr_nest_end(n, tail);

	*argc_p = argc;
	*argv_p = argv;
	return 0;
}

static int print_skbedit(struct action_util *au, FILE *f, struct rtattr *arg)
{
	struct rtattr *tb[TCA_SKBEDIT_MAX + 1];

	SPRINT_BUF(b1);
	__u32 priority;
	__u16 ptype;
	struct tc_skbedit *p = NULL;

	if (arg == NULL)
		return -1;

	parse_rtattr_nested(tb, TCA_SKBEDIT_MAX, arg);

	if (tb[TCA_SKBEDIT_PARMS] == NULL) {
		print_string(PRINT_FP, NULL, "%s", "[NULL skbedit parameters]");
		return -1;
	}
	p = RTA_DATA(tb[TCA_SKBEDIT_PARMS]);

	print_string(PRINT_ANY, "kind", "%s ", "skbedit");

	if (tb[TCA_SKBEDIT_QUEUE_MAPPING] != NULL) {
		print_uint(PRINT_ANY, "queue_mapping", "queue_mapping %u",
			   rta_getattr_u16(tb[TCA_SKBEDIT_QUEUE_MAPPING]));
	}
	if (tb[TCA_SKBEDIT_PRIORITY] != NULL) {
		priority = rta_getattr_u32(tb[TCA_SKBEDIT_PRIORITY]);
		print_string(PRINT_ANY, "priority", " priority %s",
			     sprint_tc_classid(priority, b1));
	}
	if (tb[TCA_SKBEDIT_MARK] != NULL) {
		print_uint(PRINT_ANY, "mark", " mark %u",
			   rta_getattr_u32(tb[TCA_SKBEDIT_MARK]));
	}
	if (tb[TCA_SKBEDIT_PTYPE] != NULL) {
		ptype = rta_getattr_u16(tb[TCA_SKBEDIT_PTYPE]);
		if (ptype == PACKET_HOST)
			print_string(PRINT_ANY, "ptype", " ptype %s", "host");
		else if (ptype == PACKET_BROADCAST)
			print_string(PRINT_ANY, "ptype", " ptype %s",
				     "broadcast");
		else if (ptype == PACKET_MULTICAST)
			print_string(PRINT_ANY, "ptype", " ptype %s",
				     "multicast");
		else if (ptype == PACKET_OTHERHOST)
			print_string(PRINT_ANY, "ptype", " ptype %s",
				     "otherhost");
		else
			print_uint(PRINT_ANY, "ptype", " ptype %u", ptype);
	}

	print_action_control(f, " ", p->action, "");

	print_string(PRINT_FP, NULL, "%s", _SL_);
	print_uint(PRINT_ANY, "index", "\t index %u", p->index);
	print_int(PRINT_ANY, "ref", " ref %d", p->refcnt);
	print_int(PRINT_ANY, "bind", " bind %d", p->bindcnt);

	if (show_stats) {
		if (tb[TCA_SKBEDIT_TM]) {
			struct tcf_t *tm = RTA_DATA(tb[TCA_SKBEDIT_TM]);

			print_tm(f, tm);
		}
	}

	print_string(PRINT_FP, NULL, "%s", _SL_);

	return 0;
}

struct action_util skbedit_action_util = {
	.id = "skbedit",
	.parse_aopt = parse_skbedit,
	.print_aopt = print_skbedit,
};
Commit	Line	Data
f72a7aab AD	1	/*
	2	* m_skbedit.c SKB Editing module
	3	*
	4	* Copyright (c) 2008, Intel Corporation.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
4d98ab00 SH	15	* You should have received a copy of the GNU General Public License
4d98ab00 SH	16	* along with this program; if not, see <http://www.gnu.org/licenses>.
f72a7aab AD	17	*
	18	* Authors: Alexander Duyck <alexander.h.duyck@intel.com>
	19	*
	20	*/
	21
	22	#include <stdio.h>
	23	#include <stdlib.h>
	24	#include <unistd.h>
	25	#include <string.h>
	26	#include "utils.h"
	27	#include "tc_util.h"
	28	#include <linux/tc_act/tc_skbedit.h>
1d1e0fd2	29	#include <linux/if_packet.h>
f72a7aab	30
1d1e0fd2	31	static void explain(void)
f72a7aab	32	{
1d1e0fd2	33	fprintf(stderr, "Usage: ... skbedit <[QM] [PM] [MM] [PT]>\n"
e04dd30a	34	"QM = queue_mapping QUEUE_MAPPING\n"
32a121cb SH	35	"PM = priority PRIORITY\n"
32a121cb SH	36	"MM = mark MARK\n"
1d1e0fd2 JHS	37	"PT = ptype PACKETYPE\n"
	38	"PACKETYPE = is one of:\n"
	39	" host, otherhost, broadcast, multicast\n"
e04dd30a JHS	40	"QUEUE_MAPPING = device transmit queue to use\n"
	41	"PRIORITY = classID to assign to priority field\n"
	42	"MARK = firewall mark to set\n");
f72a7aab AD	43	}
	44
	45	static void
	46	usage(void)
	47	{
	48	explain();
	49	exit(-1);
	50	}
	51
	52	static int
	53	parse_skbedit(struct action_util a, int argc_p, char ***argv_p, int tca_id,
	54	struct nlmsghdr *n)
	55	{
f72a7aab AD	56	int argc = *argc_p;
	57	char *argv = argv_p;
	58	int ok = 0;
	59	struct rtattr *tail;
	60	unsigned int tmp;
1d1e0fd2	61	__u16 queue_mapping, ptype;
e04dd30a	62	__u32 flags = 0, priority, mark;
46a65732	63	struct tc_skbedit sel = { 0 };
f72a7aab AD	64
	65	if (matches(*argv, "skbedit") != 0)
	66	return -1;
	67
	68	NEXT_ARG();
	69
	70	while (argc > 0) {
	71	if (matches(*argv, "queue_mapping") == 0) {
	72	flags \|= SKBEDIT_F_QUEUE_MAPPING;
	73	NEXT_ARG();
	74	if (get_unsigned(&tmp, *argv, 10) \|\| tmp > 65535) {
	75	fprintf(stderr, "Illegal queue_mapping\n");
	76	return -1;
	77	}
	78	queue_mapping = tmp;
	79	ok++;
	80	} else if (matches(*argv, "priority") == 0) {
	81	flags \|= SKBEDIT_F_PRIORITY;
	82	NEXT_ARG();
	83	if (get_tc_classid(&priority, *argv)) {
	84	fprintf(stderr, "Illegal priority\n");
	85	return -1;
	86	}
	87	ok++;
e04dd30a JHS	88	} else if (matches(*argv, "mark") == 0) {
	89	flags \|= SKBEDIT_F_MARK;
	90	NEXT_ARG();
e906975a	91	if (get_u32(&mark, *argv, 0)) {
e04dd30a JHS	92	fprintf(stderr, "Illegal mark\n");
	93	return -1;
	94	}
	95	ok++;
1d1e0fd2 JHS	96	} else if (matches(*argv, "ptype") == 0) {
	97
	98	NEXT_ARG();
	99	if (matches(*argv, "host") == 0) {
	100	ptype = PACKET_HOST;
	101	} else if (matches(*argv, "broadcast") == 0) {
	102	ptype = PACKET_BROADCAST;
	103	} else if (matches(*argv, "multicast") == 0) {
	104	ptype = PACKET_MULTICAST;
	105	} else if (matches(*argv, "otherhost") == 0) {
	106	ptype = PACKET_OTHERHOST;
	107	} else {
	108	fprintf(stderr, "Illegal ptype (%s)\n",
	109	*argv);
	110	return -1;
	111	}
	112	flags \|= SKBEDIT_F_PTYPE;
	113	ok++;
f72a7aab AD	114	} else if (matches(*argv, "help") == 0) {
	115	usage();
	116	} else {
	117	break;
	118	}
	119	argc--;
	120	argv++;
	121	}
	122
e67aba55 JP	123	parse_action_control_dflt(&argc, &argv, &sel.action,
e67aba55 JP	124	false, TC_ACT_PIPE);
f72a7aab AD	125
	126	if (argc) {
	127	if (matches(*argv, "index") == 0) {
	128	NEXT_ARG();
	129	if (get_u32(&sel.index, *argv, 10)) {
	130	fprintf(stderr, "Pedit: Illegal \"index\"\n");
	131	return -1;
	132	}
	133	argc--;
	134	argv++;
	135	ok++;
	136	}
	137	}
	138
	139	if (!ok) {
	140	explain();
	141	return -1;
	142	}
	143
	144
c14f9d92	145	tail = addattr_nest(n, MAX_MSG, tca_id);
f72a7aab AD	146	addattr_l(n, MAX_MSG, TCA_SKBEDIT_PARMS, &sel, sizeof(sel));
	147	if (flags & SKBEDIT_F_QUEUE_MAPPING)
	148	addattr_l(n, MAX_MSG, TCA_SKBEDIT_QUEUE_MAPPING,
	149	&queue_mapping, sizeof(queue_mapping));
	150	if (flags & SKBEDIT_F_PRIORITY)
	151	addattr_l(n, MAX_MSG, TCA_SKBEDIT_PRIORITY,
	152	&priority, sizeof(priority));
e04dd30a JHS	153	if (flags & SKBEDIT_F_MARK)
	154	addattr_l(n, MAX_MSG, TCA_SKBEDIT_MARK,
	155	&mark, sizeof(mark));
1d1e0fd2 JHS	156	if (flags & SKBEDIT_F_PTYPE)
	157	addattr_l(n, MAX_MSG, TCA_SKBEDIT_PTYPE,
	158	&ptype, sizeof(ptype));
c14f9d92	159	addattr_nest_end(n, tail);
f72a7aab AD	160
	161	*argc_p = argc;
	162	*argv_p = argv;
	163	return 0;
	164	}
	165
	166	static int print_skbedit(struct action_util au, FILE f, struct rtattr *arg)
	167	{
f72a7aab	168	struct rtattr *tb[TCA_SKBEDIT_MAX + 1];
32a121cb	169
f72a7aab	170	SPRINT_BUF(b1);
7b177017 RM	171	__u32 priority;
7b177017 RM	172	__u16 ptype;
02b1d345	173	struct tc_skbedit *p = NULL;
f72a7aab AD	174
	175	if (arg == NULL)
	176	return -1;
	177
	178	parse_rtattr_nested(tb, TCA_SKBEDIT_MAX, arg);
	179
	180	if (tb[TCA_SKBEDIT_PARMS] == NULL) {
7b177017	181	print_string(PRINT_FP, NULL, "%s", "[NULL skbedit parameters]");
f72a7aab AD	182	return -1;
f72a7aab AD	183	}
02b1d345	184	p = RTA_DATA(tb[TCA_SKBEDIT_PARMS]);
f72a7aab	185
7b177017	186	print_string(PRINT_ANY, "kind", "%s ", "skbedit");
f72a7aab AD	187
f72a7aab AD	188	if (tb[TCA_SKBEDIT_QUEUE_MAPPING] != NULL) {
7b177017 RM	189	print_uint(PRINT_ANY, "queue_mapping", "queue_mapping %u",
7b177017 RM	190	rta_getattr_u16(tb[TCA_SKBEDIT_QUEUE_MAPPING]));
f72a7aab AD	191	}
f72a7aab AD	192	if (tb[TCA_SKBEDIT_PRIORITY] != NULL) {
7b177017 RM	193	priority = rta_getattr_u32(tb[TCA_SKBEDIT_PRIORITY]);
	194	print_string(PRINT_ANY, "priority", " priority %s",
	195	sprint_tc_classid(priority, b1));
f72a7aab	196	}
e04dd30a	197	if (tb[TCA_SKBEDIT_MARK] != NULL) {
7b177017 RM	198	print_uint(PRINT_ANY, "mark", " mark %u",
7b177017 RM	199	rta_getattr_u32(tb[TCA_SKBEDIT_MARK]));
e04dd30a	200	}
1d1e0fd2	201	if (tb[TCA_SKBEDIT_PTYPE] != NULL) {
7b177017 RM	202	ptype = rta_getattr_u16(tb[TCA_SKBEDIT_PTYPE]);
	203	if (ptype == PACKET_HOST)
	204	print_string(PRINT_ANY, "ptype", " ptype %s", "host");
	205	else if (ptype == PACKET_BROADCAST)
	206	print_string(PRINT_ANY, "ptype", " ptype %s",
	207	"broadcast");
	208	else if (ptype == PACKET_MULTICAST)
	209	print_string(PRINT_ANY, "ptype", " ptype %s",
	210	"multicast");
	211	else if (ptype == PACKET_OTHERHOST)
	212	print_string(PRINT_ANY, "ptype", " ptype %s",
	213	"otherhost");
1d1e0fd2	214	else
7b177017	215	print_uint(PRINT_ANY, "ptype", " ptype %u", ptype);
1d1e0fd2	216	}
f72a7aab	217
e67aba55	218	print_action_control(f, " ", p->action, "");
878babff	219
7b177017 RM	220	print_string(PRINT_FP, NULL, "%s", _SL_);
	221	print_uint(PRINT_ANY, "index", "\t index %u", p->index);
	222	print_int(PRINT_ANY, "ref", " ref %d", p->refcnt);
	223	print_int(PRINT_ANY, "bind", " bind %d", p->bindcnt);
02b1d345	224
f72a7aab AD	225	if (show_stats) {
	226	if (tb[TCA_SKBEDIT_TM]) {
	227	struct tcf_t *tm = RTA_DATA(tb[TCA_SKBEDIT_TM]);
32a121cb	228
f72a7aab AD	229	print_tm(f, tm);
	230	}
	231	}
	232
7b177017	233	print_string(PRINT_FP, NULL, "%s", _SL_);
02b1d345	234
f72a7aab AD	235	return 0;
	236	}
	237
	238	struct action_util skbedit_action_util = {
	239	.id = "skbedit",
	240	.parse_aopt = parse_skbedit,
	241	.print_aopt = print_skbedit,
	242	};