[mirror_iproute2.git] / tc / q_htb.c

/*
 * q_htb.c		HTB.
 *
 *		This program is free software; you can redistribute 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:	Martin Devera, devik@cdi.cz
 *
 */

#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"

#define HTB_TC_VER 0x30003
#if HTB_TC_VER >> 16 != TC_HTB_PROTOVER
#error "Different kernel and TC HTB versions"
#endif

static void explain(void)
{
	fprintf(stderr, "Usage: ... qdisc add ... htb [default N] [r2q N]\n"
		"                      [direct_qlen P]\n"
		" default  minor id of class to which unclassified packets are sent {0}\n"
		" r2q      DRR quantums are computed as rate in Bps/r2q {10}\n"
		" debug    string of 16 numbers each 0-3 {0}\n\n"
		" direct_qlen  Limit of the direct queue {in packets}\n"
		"... class add ... htb rate R1 [burst B1] [mpu B] [overhead O]\n"
		"                      [prio P] [slot S] [pslot PS]\n"
		"                      [ceil R2] [cburst B2] [mtu MTU] [quantum Q]\n"
		" rate     rate allocated to this class (class can still borrow)\n"
		" burst    max bytes burst which can be accumulated during idle period {computed}\n"
		" mpu      minimum packet size used in rate computations\n"
		" overhead per-packet size overhead used in rate computations\n"
		" linklay  adapting to a linklayer e.g. atm\n"
		" ceil     definite upper class rate (no borrows) {rate}\n"
		" cburst   burst but for ceil {computed}\n"
		" mtu      max packet size we create rate map for {1600}\n"
		" prio     priority of leaf; lower are served first {0}\n"
		" quantum  how much bytes to serve from leaf at once {use r2q}\n"
		"\nTC HTB version %d.%d\n", HTB_TC_VER>>16, HTB_TC_VER&0xffff
		);
}

static void explain1(char *arg)
{
    fprintf(stderr, "Illegal \"%s\"\n", arg);
    explain();
}


static int htb_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
	unsigned int direct_qlen = ~0U;
	struct tc_htb_glob opt = {
		.rate2quantum = 10,
		.version = 3,
	};
	struct rtattr *tail;
	unsigned int i; char *p;

	while (argc > 0) {
		if (matches(*argv, "r2q") == 0) {
			NEXT_ARG();
			if (get_u32(&opt.rate2quantum, *argv, 10)) {
				explain1("r2q"); return -1;
			}
		} else if (matches(*argv, "default") == 0) {
			NEXT_ARG();
			if (get_u32(&opt.defcls, *argv, 16)) {
				explain1("default"); return -1;
			}
		} else if (matches(*argv, "debug") == 0) {
			NEXT_ARG(); p = *argv;
			for (i = 0; i < 16; i++, p++) {
				if (*p < '0' || *p > '3') break;
				opt.debug |= (*p-'0')<<(2*i);
			}
		} else if (matches(*argv, "direct_qlen") == 0) {
			NEXT_ARG();
			if (get_u32(&direct_qlen, *argv, 10)) {
				explain1("direct_qlen"); return -1;
			}
		} else {
			fprintf(stderr, "What is \"%s\"?\n", *argv);
			explain();
			return -1;
		}
		argc--; argv++;
	}
	tail = NLMSG_TAIL(n);
	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
	addattr_l(n, 2024, TCA_HTB_INIT, &opt, NLMSG_ALIGN(sizeof(opt)));
	if (direct_qlen != ~0U)
		addattr_l(n, 2024, TCA_HTB_DIRECT_QLEN,
			  &direct_qlen, sizeof(direct_qlen));
	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
	return 0;
}

static int htb_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
{
	int ok = 0;
	struct tc_htb_opt opt = {};
	__u32 rtab[256], ctab[256];
	unsigned buffer = 0, cbuffer = 0;
	int cell_log =  -1, ccell_log = -1;
	unsigned int mtu = 1600; /* eth packet len */
	unsigned short mpu = 0;
	unsigned short overhead = 0;
	unsigned int linklayer  = LINKLAYER_ETHERNET; /* Assume ethernet */
	struct rtattr *tail;
	__u64 ceil64 = 0, rate64 = 0;

	while (argc > 0) {
		if (matches(*argv, "prio") == 0) {
			NEXT_ARG();
			if (get_u32(&opt.prio, *argv, 10)) {
				explain1("prio"); return -1;
			}
			ok++;
		} else if (matches(*argv, "mtu") == 0) {
			NEXT_ARG();
			if (get_u32(&mtu, *argv, 10)) {
				explain1("mtu"); return -1;
			}
		} else if (matches(*argv, "mpu") == 0) {
			NEXT_ARG();
			if (get_u16(&mpu, *argv, 10)) {
				explain1("mpu"); return -1;
			}
		} else if (matches(*argv, "overhead") == 0) {
			NEXT_ARG();
			if (get_u16(&overhead, *argv, 10)) {
				explain1("overhead"); return -1;
			}
		} else if (matches(*argv, "linklayer") == 0) {
			NEXT_ARG();
			if (get_linklayer(&linklayer, *argv)) {
				explain1("linklayer"); return -1;
			}
		} else if (matches(*argv, "quantum") == 0) {
			NEXT_ARG();
			if (get_u32(&opt.quantum, *argv, 10)) {
				explain1("quantum"); return -1;
			}
		} else if (matches(*argv, "burst") == 0 ||
			   strcmp(*argv, "buffer") == 0 ||
			   strcmp(*argv, "maxburst") == 0) {
			NEXT_ARG();
			if (get_size_and_cell(&buffer, &cell_log, *argv) < 0) {
				explain1("buffer");
				return -1;
			}
			ok++;
		} else if (matches(*argv, "cburst") == 0 ||
			   strcmp(*argv, "cbuffer") == 0 ||
			   strcmp(*argv, "cmaxburst") == 0) {
			NEXT_ARG();
			if (get_size_and_cell(&cbuffer, &ccell_log, *argv) < 0) {
				explain1("cbuffer");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "ceil") == 0) {
			NEXT_ARG();
			if (ceil64) {
				fprintf(stderr, "Double \"ceil\" spec\n");
				return -1;
			}
			if (get_rate64(&ceil64, *argv)) {
				explain1("ceil");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "rate") == 0) {
			NEXT_ARG();
			if (rate64) {
				fprintf(stderr, "Double \"rate\" spec\n");
				return -1;
			}
			if (get_rate64(&rate64, *argv)) {
				explain1("rate");
				return -1;
			}
			ok++;
		} else if (strcmp(*argv, "help") == 0) {
			explain();
			return -1;
		} else {
			fprintf(stderr, "What is \"%s\"?\n", *argv);
			explain();
			return -1;
		}
		argc--; argv++;
	}

	/*	if (!ok)
		return 0;*/

	if (!rate64) {
		fprintf(stderr, "\"rate\" is required.\n");
		return -1;
	}
	/* if ceil params are missing, use the same as rate */
	if (!ceil64)
		ceil64 = rate64;

	opt.rate.rate = (rate64 >= (1ULL << 32)) ? ~0U : rate64;
	opt.ceil.rate = (ceil64 >= (1ULL << 32)) ? ~0U : ceil64;

	/* compute minimal allowed burst from rate; mtu is added here to make
	   sute that buffer is larger than mtu and to have some safeguard space */
	if (!buffer)
		buffer = rate64 / get_hz() + mtu;
	if (!cbuffer)
		cbuffer = ceil64 / get_hz() + mtu;

	opt.ceil.overhead = overhead;
	opt.rate.overhead = overhead;

	opt.ceil.mpu = mpu;
	opt.rate.mpu = mpu;

	if (tc_calc_rtable(&opt.rate, rtab, cell_log, mtu, linklayer) < 0) {
		fprintf(stderr, "htb: failed to calculate rate table.\n");
		return -1;
	}
	opt.buffer = tc_calc_xmittime(rate64, buffer);

	if (tc_calc_rtable(&opt.ceil, ctab, ccell_log, mtu, linklayer) < 0) {
		fprintf(stderr, "htb: failed to calculate ceil rate table.\n");
		return -1;
	}
	opt.cbuffer = tc_calc_xmittime(ceil64, cbuffer);

	tail = NLMSG_TAIL(n);
	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);

	if (rate64 >= (1ULL << 32))
		addattr_l(n, 1124, TCA_HTB_RATE64, &rate64, sizeof(rate64));

	if (ceil64 >= (1ULL << 32))
		addattr_l(n, 1224, TCA_HTB_CEIL64, &ceil64, sizeof(ceil64));

	addattr_l(n, 2024, TCA_HTB_PARMS, &opt, sizeof(opt));
	addattr_l(n, 3024, TCA_HTB_RTAB, rtab, 1024);
	addattr_l(n, 4024, TCA_HTB_CTAB, ctab, 1024);
	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
	return 0;
}

static int htb_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
{
	struct rtattr *tb[TCA_HTB_MAX + 1];
	struct tc_htb_opt *hopt;
	struct tc_htb_glob *gopt;
	double buffer, cbuffer;
	unsigned int linklayer;
	__u64 rate64, ceil64;

	SPRINT_BUF(b1);
	SPRINT_BUF(b2);
	SPRINT_BUF(b3);

	if (opt == NULL)
		return 0;

	parse_rtattr_nested(tb, TCA_HTB_MAX, opt);

	if (tb[TCA_HTB_PARMS]) {
		hopt = RTA_DATA(tb[TCA_HTB_PARMS]);
		if (RTA_PAYLOAD(tb[TCA_HTB_PARMS])  < sizeof(*hopt)) return -1;

		if (!hopt->level) {
			fprintf(f, "prio %d ", (int)hopt->prio);
			if (show_details)
				fprintf(f, "quantum %d ", (int)hopt->quantum);
		}

		rate64 = hopt->rate.rate;
		if (tb[TCA_HTB_RATE64] &&
		    RTA_PAYLOAD(tb[TCA_HTB_RATE64]) >= sizeof(rate64)) {
			rate64 = rta_getattr_u64(tb[TCA_HTB_RATE64]);
		}

		ceil64 = hopt->ceil.rate;
		if (tb[TCA_HTB_CEIL64] &&
		    RTA_PAYLOAD(tb[TCA_HTB_CEIL64]) >= sizeof(ceil64))
			ceil64 = rta_getattr_u64(tb[TCA_HTB_CEIL64]);

		fprintf(f, "rate %s ", sprint_rate(rate64, b1));
		if (hopt->rate.overhead)
			fprintf(f, "overhead %u ", hopt->rate.overhead);
		buffer = tc_calc_xmitsize(rate64, hopt->buffer);

		fprintf(f, "ceil %s ", sprint_rate(ceil64, b1));
		cbuffer = tc_calc_xmitsize(ceil64, hopt->cbuffer);
		linklayer = (hopt->rate.linklayer & TC_LINKLAYER_MASK);
		if (linklayer > TC_LINKLAYER_ETHERNET || show_details)
			fprintf(f, "linklayer %s ", sprint_linklayer(linklayer, b3));
		if (show_details) {
			fprintf(f, "burst %s/%u mpu %s ",
				sprint_size(buffer, b1),
				1<<hopt->rate.cell_log,
				sprint_size(hopt->rate.mpu, b2));
			fprintf(f, "cburst %s/%u mpu %s ",
				sprint_size(cbuffer, b1),
				1<<hopt->ceil.cell_log,
				sprint_size(hopt->ceil.mpu, b2));
			fprintf(f, "level %d ", (int)hopt->level);
		} else {
			fprintf(f, "burst %s ", sprint_size(buffer, b1));
			fprintf(f, "cburst %s ", sprint_size(cbuffer, b1));
		}
		if (show_raw)
			fprintf(f, "buffer [%08x] cbuffer [%08x] ",
				hopt->buffer, hopt->cbuffer);
	}
	if (tb[TCA_HTB_INIT]) {
		gopt = RTA_DATA(tb[TCA_HTB_INIT]);
		if (RTA_PAYLOAD(tb[TCA_HTB_INIT])  < sizeof(*gopt)) return -1;

		fprintf(f, "r2q %d default %x direct_packets_stat %u",
			gopt->rate2quantum, gopt->defcls, gopt->direct_pkts);
		if (show_details)
			fprintf(f, " ver %d.%d", gopt->version >> 16, gopt->version & 0xffff);
	}
	if (tb[TCA_HTB_DIRECT_QLEN] &&
	    RTA_PAYLOAD(tb[TCA_HTB_DIRECT_QLEN]) >= sizeof(__u32)) {
		__u32 direct_qlen = rta_getattr_u32(tb[TCA_HTB_DIRECT_QLEN]);

		fprintf(f, " direct_qlen %u", direct_qlen);
	}
	return 0;
}

static int htb_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
{
	struct tc_htb_xstats *st;

	if (xstats == NULL)
		return 0;

	if (RTA_PAYLOAD(xstats) < sizeof(*st))
		return -1;

	st = RTA_DATA(xstats);
	fprintf(f, " lended: %u borrowed: %u giants: %u\n",
		st->lends, st->borrows, st->giants);
	fprintf(f, " tokens: %d ctokens: %d\n", st->tokens, st->ctokens);
	return 0;
}

struct qdisc_util htb_qdisc_util = {
	.id		= "htb",
	.parse_qopt	= htb_parse_opt,
	.print_qopt	= htb_print_opt,
	.print_xstats	= htb_print_xstats,
	.parse_copt	= htb_parse_class_opt,
	.print_copt	= htb_print_opt,
};
Commit	Line	Data
9e9d615e	1	/*
	2	* q_htb.c HTB.
	3	*
	4	* This program is free software; you can redistribute 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	*
	9	* Authors: Martin Devera, devik@cdi.cz
	10	*
	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
	23	#include "utils.h"
	24	#include "tc_util.h"
	25
	26	#define HTB_TC_VER 0x30003
	27	#if HTB_TC_VER >> 16 != TC_HTB_PROTOVER
	28	#error "Different kernel and TC HTB versions"
	29	#endif
	30
	31	static void explain(void)
	32	{
	33	fprintf(stderr, "Usage: ... qdisc add ... htb [default N] [r2q N]\n"
b43f3318	34	" [direct_qlen P]\n"
9e9d615e	35	" default minor id of class to which unclassified packets are sent {0}\n"
	36	" r2q DRR quantums are computed as rate in Bps/r2q {10}\n"
	37	" debug string of 16 numbers each 0-3 {0}\n\n"
b43f3318	38	" direct_qlen Limit of the direct queue {in packets}\n"
a166d246 SH	39	"... class add ... htb rate R1 [burst B1] [mpu B] [overhead O]\n"
a166d246 SH	40	" [prio P] [slot S] [pslot PS]\n"
9e9d615e	41	" [ceil R2] [cburst B2] [mtu MTU] [quantum Q]\n"
	42	" rate rate allocated to this class (class can still borrow)\n"
	43	" burst max bytes burst which can be accumulated during idle period {computed}\n"
a166d246 SH	44	" mpu minimum packet size used in rate computations\n"
a166d246 SH	45	" overhead per-packet size overhead used in rate computations\n"
292f29b4	46	" linklay adapting to a linklayer e.g. atm\n"
9e9d615e	47	" ceil definite upper class rate (no borrows) {rate}\n"
	48	" cburst burst but for ceil {computed}\n"
	49	" mtu max packet size we create rate map for {1600}\n"
	50	" prio priority of leaf; lower are served first {0}\n"
	51	" quantum how much bytes to serve from leaf at once {use r2q}\n"
32a121cb	52	"\nTC HTB version %d.%d\n", HTB_TC_VER>>16, HTB_TC_VER&0xffff
9e9d615e	53	);
	54	}
	55
	56	static void explain1(char *arg)
	57	{
	58	fprintf(stderr, "Illegal \"%s\"\n", arg);
	59	explain();
	60	}
	61
	62
9e9d615e	63	static int htb_parse_opt(struct qdisc_util qu, int argc, char argv, struct nlmsghdr n)
9e9d615e	64	{
4d4da09e	65	unsigned int direct_qlen = ~0U;
d17b136f PS	66	struct tc_htb_glob opt = {
	67	.rate2quantum = 10,
	68	.version = 3,
	69	};
9e9d615e	70	struct rtattr *tail;
32a121cb SH	71	unsigned int i; char *p;
32a121cb SH	72
9e9d615e	73	while (argc > 0) {
9e9d615e	74	if (matches(*argv, "r2q") == 0) {
22fa92e3 SH	75	NEXT_ARG();
	76	if (get_u32(&opt.rate2quantum, *argv, 10)) {
	77	explain1("r2q"); return -1;
	78	}
9e9d615e	79	} else if (matches(*argv, "default") == 0) {
22fa92e3 SH	80	NEXT_ARG();
	81	if (get_u32(&opt.defcls, *argv, 16)) {
	82	explain1("default"); return -1;
	83	}
9e9d615e	84	} else if (matches(*argv, "debug") == 0) {
22fa92e3	85	NEXT_ARG(); p = *argv;
32a121cb SH	86	for (i = 0; i < 16; i++, p++) {
32a121cb SH	87	if (p < '0' \|\| p > '3') break;
22fa92e3 SH	88	opt.debug \|= (p-'0')<<(2i);
22fa92e3 SH	89	}
4d4da09e HS	90	} else if (matches(*argv, "direct_qlen") == 0) {
	91	NEXT_ARG();
	92	if (get_u32(&direct_qlen, *argv, 10)) {
	93	explain1("direct_qlen"); return -1;
	94	}
9e9d615e	95	} else {
	96	fprintf(stderr, "What is \"%s\"?\n", *argv);
	97	explain();
	98	return -1;
	99	}
	100	argc--; argv++;
	101	}
1b52a762	102	tail = NLMSG_TAIL(n);
9e9d615e	103	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
9e9d615e	104	addattr_l(n, 2024, TCA_HTB_INIT, &opt, NLMSG_ALIGN(sizeof(opt)));
4d4da09e HS	105	if (direct_qlen != ~0U)
	106	addattr_l(n, 2024, TCA_HTB_DIRECT_QLEN,
	107	&direct_qlen, sizeof(direct_qlen));
1b52a762	108	tail->rta_len = (void ) NLMSG_TAIL(n) - (void ) tail;
9e9d615e	109	return 0;
	110	}
	111
	112	static int htb_parse_class_opt(struct qdisc_util qu, int argc, char argv, struct nlmsghdr n)
	113	{
32a121cb	114	int ok = 0;
d17b136f	115	struct tc_htb_opt opt = {};
32a121cb SH	116	__u32 rtab[256], ctab[256];
	117	unsigned buffer = 0, cbuffer = 0;
	118	int cell_log = -1, ccell_log = -1;
d17b136f	119	unsigned int mtu = 1600; /* eth packet len */
bccd014b JDB	120	unsigned short mpu = 0;
bccd014b JDB	121	unsigned short overhead = 0;
292f29b4	122	unsigned int linklayer = LINKLAYER_ETHERNET; /* Assume ethernet */
9e9d615e	123	struct rtattr *tail;
8334bb32	124	__u64 ceil64 = 0, rate64 = 0;
9e9d615e	125
9e9d615e	126	while (argc > 0) {
	127	if (matches(*argv, "prio") == 0) {
	128	NEXT_ARG();
	129	if (get_u32(&opt.prio, *argv, 10)) {
	130	explain1("prio"); return -1;
	131	}
	132	ok++;
	133	} else if (matches(*argv, "mtu") == 0) {
	134	NEXT_ARG();
	135	if (get_u32(&mtu, *argv, 10)) {
	136	explain1("mtu"); return -1;
	137	}
a166d246 SH	138	} else if (matches(*argv, "mpu") == 0) {
a166d246 SH	139	NEXT_ARG();
bccd014b	140	if (get_u16(&mpu, *argv, 10)) {
a166d246 SH	141	explain1("mpu"); return -1;
	142	}
	143	} else if (matches(*argv, "overhead") == 0) {
	144	NEXT_ARG();
bccd014b	145	if (get_u16(&overhead, *argv, 10)) {
a166d246 SH	146	explain1("overhead"); return -1;
a166d246 SH	147	}
292f29b4 JDB	148	} else if (matches(*argv, "linklayer") == 0) {
	149	NEXT_ARG();
	150	if (get_linklayer(&linklayer, *argv)) {
	151	explain1("linklayer"); return -1;
	152	}
9e9d615e	153	} else if (matches(*argv, "quantum") == 0) {
	154	NEXT_ARG();
	155	if (get_u32(&opt.quantum, *argv, 10)) {
	156	explain1("quantum"); return -1;
	157	}
	158	} else if (matches(*argv, "burst") == 0 \|\|
22fa92e3 SH	159	strcmp(*argv, "buffer") == 0 \|\|
22fa92e3 SH	160	strcmp(*argv, "maxburst") == 0) {
9e9d615e	161	NEXT_ARG();
	162	if (get_size_and_cell(&buffer, &cell_log, *argv) < 0) {
	163	explain1("buffer");
	164	return -1;
	165	}
	166	ok++;
	167	} else if (matches(*argv, "cburst") == 0 \|\|
22fa92e3 SH	168	strcmp(*argv, "cbuffer") == 0 \|\|
22fa92e3 SH	169	strcmp(*argv, "cmaxburst") == 0) {
9e9d615e	170	NEXT_ARG();
	171	if (get_size_and_cell(&cbuffer, &ccell_log, *argv) < 0) {
	172	explain1("cbuffer");
	173	return -1;
	174	}
	175	ok++;
	176	} else if (strcmp(*argv, "ceil") == 0) {
	177	NEXT_ARG();
8334bb32	178	if (ceil64) {
9e9d615e	179	fprintf(stderr, "Double \"ceil\" spec\n");
	180	return -1;
	181	}
8334bb32	182	if (get_rate64(&ceil64, *argv)) {
9e9d615e	183	explain1("ceil");
	184	return -1;
	185	}
	186	ok++;
	187	} else if (strcmp(*argv, "rate") == 0) {
	188	NEXT_ARG();
8334bb32	189	if (rate64) {
9e9d615e	190	fprintf(stderr, "Double \"rate\" spec\n");
	191	return -1;
	192	}
8334bb32	193	if (get_rate64(&rate64, *argv)) {
9e9d615e	194	explain1("rate");
	195	return -1;
	196	}
	197	ok++;
	198	} else if (strcmp(*argv, "help") == 0) {
	199	explain();
	200	return -1;
	201	} else {
	202	fprintf(stderr, "What is \"%s\"?\n", *argv);
	203	explain();
	204	return -1;
	205	}
	206	argc--; argv++;
	207	}
	208
22fa92e3	209	/* if (!ok)
9e9d615e	210	return 0;*/
9e9d615e	211
8334bb32	212	if (!rate64) {
9e9d615e	213	fprintf(stderr, "\"rate\" is required.\n");
	214	return -1;
	215	}
	216	/* if ceil params are missing, use the same as rate */
8334bb32 ED	217	if (!ceil64)
	218	ceil64 = rate64;
	219
	220	opt.rate.rate = (rate64 >= (1ULL << 32)) ? ~0U : rate64;
	221	opt.ceil.rate = (ceil64 >= (1ULL << 32)) ? ~0U : ceil64;
9e9d615e	222
	223	/* compute minimal allowed burst from rate; mtu is added here to make
	224	sute that buffer is larger than mtu and to have some safeguard space */
8334bb32 ED	225	if (!buffer)
	226	buffer = rate64 / get_hz() + mtu;
	227	if (!cbuffer)
	228	cbuffer = ceil64 / get_hz() + mtu;
9e9d615e	229
bccd014b JDB	230	opt.ceil.overhead = overhead;
	231	opt.rate.overhead = overhead;
	232
	233	opt.ceil.mpu = mpu;
	234	opt.rate.mpu = mpu;
a166d246	235
292f29b4	236	if (tc_calc_rtable(&opt.rate, rtab, cell_log, mtu, linklayer) < 0) {
9e9d615e	237	fprintf(stderr, "htb: failed to calculate rate table.\n");
	238	return -1;
	239	}
8334bb32	240	opt.buffer = tc_calc_xmittime(rate64, buffer);
ae665a52	241
292f29b4	242	if (tc_calc_rtable(&opt.ceil, ctab, ccell_log, mtu, linklayer) < 0) {
9e9d615e	243	fprintf(stderr, "htb: failed to calculate ceil rate table.\n");
	244	return -1;
	245	}
8334bb32	246	opt.cbuffer = tc_calc_xmittime(ceil64, cbuffer);
9e9d615e	247
1b52a762	248	tail = NLMSG_TAIL(n);
9e9d615e	249	addattr_l(n, 1024, TCA_OPTIONS, NULL, 0);
8334bb32 ED	250
	251	if (rate64 >= (1ULL << 32))
	252	addattr_l(n, 1124, TCA_HTB_RATE64, &rate64, sizeof(rate64));
	253
	254	if (ceil64 >= (1ULL << 32))
	255	addattr_l(n, 1224, TCA_HTB_CEIL64, &ceil64, sizeof(ceil64));
	256
9e9d615e	257	addattr_l(n, 2024, TCA_HTB_PARMS, &opt, sizeof(opt));
	258	addattr_l(n, 3024, TCA_HTB_RTAB, rtab, 1024);
	259	addattr_l(n, 4024, TCA_HTB_CTAB, ctab, 1024);
1b52a762	260	tail->rta_len = (void ) NLMSG_TAIL(n) - (void ) tail;
9e9d615e	261	return 0;
	262	}
	263
	264	static int htb_print_opt(struct qdisc_util qu, FILE f, struct rtattr *opt)
	265	{
b43f3318	266	struct rtattr *tb[TCA_HTB_MAX + 1];
9e9d615e	267	struct tc_htb_opt *hopt;
9e9d615e	268	struct tc_htb_glob *gopt;
32a121cb	269	double buffer, cbuffer;
3e92ff52	270	unsigned int linklayer;
8334bb32	271	__u64 rate64, ceil64;
32a121cb	272
9e9d615e	273	SPRINT_BUF(b1);
9e9d615e	274	SPRINT_BUF(b2);
467f9fce	275	SPRINT_BUF(b3);
9e9d615e	276
	277	if (opt == NULL)
	278	return 0;
	279
b43f3318	280	parse_rtattr_nested(tb, TCA_HTB_MAX, opt);
9e9d615e	281
9e9d615e	282	if (tb[TCA_HTB_PARMS]) {
22fa92e3 SH	283	hopt = RTA_DATA(tb[TCA_HTB_PARMS]);
22fa92e3 SH	284	if (RTA_PAYLOAD(tb[TCA_HTB_PARMS]) < sizeof(*hopt)) return -1;
9e9d615e	285
	286	if (!hopt->level) {
	287	fprintf(f, "prio %d ", (int)hopt->prio);
	288	if (show_details)
	289	fprintf(f, "quantum %d ", (int)hopt->quantum);
	290	}
8334bb32 ED	291
	292	rate64 = hopt->rate.rate;
	293	if (tb[TCA_HTB_RATE64] &&
	294	RTA_PAYLOAD(tb[TCA_HTB_RATE64]) >= sizeof(rate64)) {
	295	rate64 = rta_getattr_u64(tb[TCA_HTB_RATE64]);
	296	}
	297
	298	ceil64 = hopt->ceil.rate;
	299	if (tb[TCA_HTB_CEIL64] &&
	300	RTA_PAYLOAD(tb[TCA_HTB_CEIL64]) >= sizeof(ceil64))
	301	ceil64 = rta_getattr_u64(tb[TCA_HTB_CEIL64]);
	302
	303	fprintf(f, "rate %s ", sprint_rate(rate64, b1));
22fa92e3 SH	304	if (hopt->rate.overhead)
22fa92e3 SH	305	fprintf(f, "overhead %u ", hopt->rate.overhead);
8334bb32 ED	306	buffer = tc_calc_xmitsize(rate64, hopt->buffer);
	307
	308	fprintf(f, "ceil %s ", sprint_rate(ceil64, b1));
	309	cbuffer = tc_calc_xmitsize(ceil64, hopt->cbuffer);
3e92ff52 JDB	310	linklayer = (hopt->rate.linklayer & TC_LINKLAYER_MASK);
3e92ff52 JDB	311	if (linklayer > TC_LINKLAYER_ETHERNET \|\| show_details)
467f9fce	312	fprintf(f, "linklayer %s ", sprint_linklayer(linklayer, b3));
22fa92e3	313	if (show_details) {
1aea7fea	314	fprintf(f, "burst %s/%u mpu %s ",
22fa92e3 SH	315	sprint_size(buffer, b1),
22fa92e3 SH	316	1<<hopt->rate.cell_log,
1aea7fea DS	317	sprint_size(hopt->rate.mpu, b2));
1aea7fea DS	318	fprintf(f, "cburst %s/%u mpu %s ",
22fa92e3 SH	319	sprint_size(cbuffer, b1),
22fa92e3 SH	320	1<<hopt->ceil.cell_log,
1aea7fea	321	sprint_size(hopt->ceil.mpu, b2));
22fa92e3 SH	322	fprintf(f, "level %d ", (int)hopt->level);
	323	} else {
	324	fprintf(f, "burst %s ", sprint_size(buffer, b1));
	325	fprintf(f, "cburst %s ", sprint_size(cbuffer, b1));
	326	}
	327	if (show_raw)
	328	fprintf(f, "buffer [%08x] cbuffer [%08x] ",
32a121cb	329	hopt->buffer, hopt->cbuffer);
9e9d615e	330	}
9e9d615e	331	if (tb[TCA_HTB_INIT]) {
22fa92e3 SH	332	gopt = RTA_DATA(tb[TCA_HTB_INIT]);
22fa92e3 SH	333	if (RTA_PAYLOAD(tb[TCA_HTB_INIT]) < sizeof(*gopt)) return -1;
9e9d615e	334
22fa92e3	335	fprintf(f, "r2q %d default %x direct_packets_stat %u",
32a121cb	336	gopt->rate2quantum, gopt->defcls, gopt->direct_pkts);
9e9d615e	337	if (show_details)
32a121cb	338	fprintf(f, " ver %d.%d", gopt->version >> 16, gopt->version & 0xffff);
9e9d615e	339	}
b43f3318 ED	340	if (tb[TCA_HTB_DIRECT_QLEN] &&
	341	RTA_PAYLOAD(tb[TCA_HTB_DIRECT_QLEN]) >= sizeof(__u32)) {
	342	__u32 direct_qlen = rta_getattr_u32(tb[TCA_HTB_DIRECT_QLEN]);
	343
	344	fprintf(f, " direct_qlen %u", direct_qlen);
	345	}
9e9d615e	346	return 0;
	347	}
	348
	349	static int htb_print_xstats(struct qdisc_util qu, FILE f, struct rtattr *xstats)
	350	{
	351	struct tc_htb_xstats *st;
32a121cb	352
9e9d615e	353	if (xstats == NULL)
	354	return 0;
	355
	356	if (RTA_PAYLOAD(xstats) < sizeof(*st))
	357	return -1;
	358
	359	st = RTA_DATA(xstats);
ae665a52	360	fprintf(f, " lended: %u borrowed: %u giants: %u\n",
32a121cb SH	361	st->lends, st->borrows, st->giants);
32a121cb SH	362	fprintf(f, " tokens: %d ctokens: %d\n", st->tokens, st->ctokens);
9e9d615e	363	return 0;
	364	}
	365
95812b56	366	struct qdisc_util htb_qdisc_util = {
32a121cb	367	.id = "htb",
f2f99e2e SH	368	.parse_qopt = htb_parse_opt,
f2f99e2e SH	369	.print_qopt = htb_print_opt,
32a121cb	370	.print_xstats = htb_print_xstats,
f2f99e2e SH	371	.parse_copt = htb_parse_class_opt,
f2f99e2e SH	372	.print_copt = htb_print_opt,
9e9d615e	373	};