X-Git-Url: http://git.onelab.eu/?p=libnl.git;a=blobdiff_plain;f=lib%2Froute%2Ftc.c;fp=lib%2Froute%2Ftc.c;h=0000000000000000000000000000000000000000;hp=fc2069dd95229cc765ab083fa3ea0ef49454424e;hb=332c8b7561dcac7ac95cc0d07328b1cb22d780a6;hpb=eabdd897b75ecc1fac5e255229a899126085e57a

diff --git a/lib/route/tc.c b/lib/route/tc.c
deleted file mode 100644
index fc2069d..0000000
--- a/lib/route/tc.c
+++ /dev/null
@@ -1,566 +0,0 @@
-/*
- * lib/route/tc.c		Traffic Control
- *
- *	This library is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU Lesser General Public
- *	License as published by the Free Software Foundation version 2.1
- *	of the License.
- *
- * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
- */
-
-/**
- * @ingroup rtnl
- * @defgroup tc Traffic Control
- * @brief
- * @{
- */
-
-#include <netlink-local.h>
-#include <netlink-tc.h>
-#include <netlink/netlink.h>
-#include <netlink/utils.h>
-#include <netlink/route/rtnl.h>
-#include <netlink/route/link.h>
-#include <netlink/route/tc.h>
-
-/** @cond SKIP */
-
-static struct nla_policy tc_policy[TCA_MAX+1] = {
-	[TCA_KIND]	= { .type = NLA_STRING,
-			    .maxlen = TCKINDSIZ },
-	[TCA_STATS]	= { .minlen = sizeof(struct tc_stats) },
-	[TCA_STATS2]	= { .type = NLA_NESTED },
-};
-
-int tca_parse(struct nlattr **tb, int maxattr, struct rtnl_tca *g,
-	      struct nla_policy *policy)
-{
-	
-	if (g->tc_mask & TCA_ATTR_OPTS)
-		return nla_parse(tb, maxattr,
-				 (struct nlattr *) g->tc_opts->d_data,
-				 g->tc_opts->d_size, policy);
-	else {
-		/* Ugly but tb[] must be in a defined state even if no
-		 * attributes can be found. */
-		memset(tb, 0, sizeof(struct nlattr *) * (maxattr + 1));
-		return 0;
-	}
-}
-
-static struct nla_policy tc_stats2_policy[TCA_STATS_MAX+1] = {
-	[TCA_STATS_BASIC]    = { .minlen = sizeof(struct gnet_stats_basic) },
-	[TCA_STATS_RATE_EST] = { .minlen = sizeof(struct gnet_stats_rate_est) },
-	[TCA_STATS_QUEUE]    = { .minlen = sizeof(struct gnet_stats_queue) },
-};
-
-int tca_msg_parser(struct nlmsghdr *n, struct rtnl_tca *g)
-{
-	struct nlattr *tb[TCA_MAX + 1];
-	struct tcmsg *tm;
-	int err;
-
-	err = nlmsg_parse(n, sizeof(*tm), tb, TCA_MAX, tc_policy);
-	if (err < 0)
-		return err;
-
-	if (tb[TCA_KIND] == NULL)
-		return nl_error(EINVAL, "Missing tca kind TLV");
-
-	nla_strlcpy(g->tc_kind, tb[TCA_KIND], TCKINDSIZ);
-
-	tm = nlmsg_data(n);
-	g->tc_family  = tm->tcm_family;
-	g->tc_ifindex = tm->tcm_ifindex;
-	g->tc_handle  = tm->tcm_handle;
-	g->tc_parent  = tm->tcm_parent;
-	g->tc_info    = tm->tcm_info;
-
-	g->tc_mask = (TCA_ATTR_FAMILY|TCA_ATTR_IFINDEX|TCA_ATTR_HANDLE|
-		TCA_ATTR_PARENT|TCA_ATTR_INFO|TCA_ATTR_KIND);
-
-	if (tb[TCA_OPTIONS]) {
-		g->tc_opts = nla_get_data(tb[TCA_OPTIONS]);
-		if (!g->tc_opts)
-			return nl_errno(ENOMEM);
-		g->tc_mask |= TCA_ATTR_OPTS;
-	}
-	
-
-	if (tb[TCA_STATS2]) {
-		struct nlattr *tbs[TCA_STATS_MAX + 1];
-
-		err = nla_parse_nested(tbs, TCA_STATS_MAX, tb[TCA_STATS2],
-				       tc_stats2_policy);
-		if (err < 0)
-			return err;
-
-		if (tbs[TCA_STATS_BASIC]) {
-			struct gnet_stats_basic *bs;
-			
-			bs = nla_data(tbs[TCA_STATS_BASIC]);
-			g->tc_stats[RTNL_TC_BYTES]	= bs->bytes;
-			g->tc_stats[RTNL_TC_PACKETS]	= bs->packets;
-		}
-
-		if (tbs[TCA_STATS_RATE_EST]) {
-			struct gnet_stats_rate_est *re;
-
-			re = nla_data(tbs[TCA_STATS_RATE_EST]);
-			g->tc_stats[RTNL_TC_RATE_BPS]	= re->bps;
-			g->tc_stats[RTNL_TC_RATE_PPS]	= re->pps;
-		}
-		
-		if (tbs[TCA_STATS_QUEUE]) {
-			struct gnet_stats_queue *q;
-
-			q = nla_data(tbs[TCA_STATS_QUEUE]);
-			g->tc_stats[RTNL_TC_QLEN]	= q->qlen;
-			g->tc_stats[RTNL_TC_BACKLOG]	= q->backlog;
-			g->tc_stats[RTNL_TC_DROPS]	= q->drops;
-			g->tc_stats[RTNL_TC_REQUEUES]	= q->requeues;
-			g->tc_stats[RTNL_TC_OVERLIMITS]	= q->overlimits;
-		}
-
-		g->tc_mask |= TCA_ATTR_STATS;
-		
-		if (tbs[TCA_STATS_APP]) {
-			g->tc_xstats = nla_get_data(tbs[TCA_STATS_APP]);
-			if (g->tc_xstats == NULL)
-				return -ENOMEM;
-		} else
-			goto compat_xstats;
-	} else {
-		if (tb[TCA_STATS]) {
-			struct tc_stats *st = nla_data(tb[TCA_STATS]);
-
-			g->tc_stats[RTNL_TC_BYTES]	= st->bytes;
-			g->tc_stats[RTNL_TC_PACKETS]	= st->packets;
-			g->tc_stats[RTNL_TC_RATE_BPS]	= st->bps;
-			g->tc_stats[RTNL_TC_RATE_PPS]	= st->pps;
-			g->tc_stats[RTNL_TC_QLEN]	= st->qlen;
-			g->tc_stats[RTNL_TC_BACKLOG]	= st->backlog;
-			g->tc_stats[RTNL_TC_DROPS]	= st->drops;
-			g->tc_stats[RTNL_TC_OVERLIMITS]	= st->overlimits;
-
-			g->tc_mask |= TCA_ATTR_STATS;
-		}
-
-compat_xstats:
-		if (tb[TCA_XSTATS]) {
-			g->tc_xstats = nla_get_data(tb[TCA_XSTATS]);
-			if (g->tc_xstats == NULL)
-				return -ENOMEM;
-			g->tc_mask |= TCA_ATTR_XSTATS;
-		}
-	}
-
-
-	return 0;
-}
-
-void tca_free_data(struct rtnl_tca *tca)
-{
-	nl_data_free(tca->tc_opts);
-	nl_data_free(tca->tc_xstats);
-}
-
-int tca_dump_brief(struct rtnl_tca *g, const char *type,
-		   struct nl_dump_params *p, int line)
-{
-	char handle[32], parent[32];
-	struct nl_cache *link_cache;
-	
-	link_cache = nl_cache_mngt_require("route/link");
-
-	dp_dump(p, "%s %s ", g->tc_kind, type);
-
-	if (link_cache) {
-		char buf[32];
-		dp_dump(p, "dev %s ",
-			rtnl_link_i2name(link_cache, g->tc_ifindex,
-					 buf, sizeof(buf)));
-	} else
-		dp_dump(p, "dev %u ", g->tc_ifindex);
-	
-	dp_dump(p, "handle %s parent %s",
-		rtnl_tc_handle2str(g->tc_handle, handle, sizeof(handle)),
-		rtnl_tc_handle2str(g->tc_parent, parent, sizeof(parent)));
-
-	return 1;
-}
-
-int tca_dump_full(struct rtnl_tca *g, struct nl_dump_params *p, int line)
-{
-	dp_dump_line(p, line++, "  ");
-	return line;
-}
-
-int tca_dump_stats(struct rtnl_tca *g, struct nl_dump_params *p, int line)
-{
-	char *unit, fmt[64];
-	float res;
-	strcpy(fmt, "        %7.2f %s %10u %10u %10u %10u %10u\n");
-
-	dp_dump_line(p, line++,
-		"    Stats:    bytes    packets      drops overlimits" \
-		"       qlen    backlog\n");
-
-	res = nl_cancel_down_bytes(g->tc_stats[RTNL_TC_BYTES], &unit);
-	if (*unit == 'B')
-		fmt[11] = '9';
-
-	dp_dump_line(p, line++, fmt, res, unit,
-		g->tc_stats[RTNL_TC_PACKETS],
-		g->tc_stats[RTNL_TC_DROPS],
-		g->tc_stats[RTNL_TC_OVERLIMITS],
-		g->tc_stats[RTNL_TC_QLEN],
-		g->tc_stats[RTNL_TC_BACKLOG]);
-
-	res = nl_cancel_down_bytes(g->tc_stats[RTNL_TC_RATE_BPS], &unit);
-
-	strcpy(fmt, "        %7.2f %s/s%9u pps");
-
-	if (*unit == 'B')
-		fmt[11] = '9';
-
-	dp_dump_line(p, line++, fmt, res, unit, g->tc_stats[RTNL_TC_RATE_PPS]);
-
-	return line;
-}
-
-int tca_filter(struct rtnl_tca *o, struct rtnl_tca *f)
-{
-#define REQ(F) (f->tc_mask & TCA_ATTR_##F)
-#define AVAIL(F) (o->tc_mask & TCA_ATTR_##F)
-#define _O(F, EXPR) (REQ(F) && (!AVAIL(F) || (EXPR)))
-#define _C(F, N) (REQ(F) && (!AVAIL(F) || (o->N != f->N)))
-	if (_C(HANDLE,	tc_handle)			||
-	    _C(PARENT,	tc_parent)			||
-	    _C(IFINDEX,	tc_ifindex)			||
-	    _O(KIND,	strcmp(o->tc_kind, f->tc_kind)))
-		return 0;
-#undef REQ
-#undef AVAIL
-#undef _O
-#undef _C
-
-	return 1;
-}
-
-void tca_set_ifindex(struct rtnl_tca *t, int ifindex)
-{
-	t->tc_ifindex = ifindex;
-	t->tc_mask |= TCA_ATTR_IFINDEX;
-}
-
-int tca_get_ifindex(struct rtnl_tca *t)
-{
-	if (t->tc_mask & TCA_ATTR_IFINDEX)
-		return t->tc_ifindex;
-	else
-		return RTNL_LINK_NOT_FOUND;
-}
-
-void tca_set_handle(struct rtnl_tca *t, uint32_t handle)
-{
-	t->tc_handle = handle;
-	t->tc_mask |= TCA_ATTR_HANDLE;
-}
-
-uint32_t tca_get_handle(struct rtnl_tca *t)
-{
-	if (t->tc_mask & TCA_ATTR_HANDLE)
-		return t->tc_handle;
-	else
-		return 0;
-}
-
-void tca_set_parent(struct rtnl_tca *t, uint32_t parent)
-{
-	t->tc_parent = parent;
-	t->tc_mask |= TCA_ATTR_PARENT;
-}
-
-uint32_t tca_get_parent(struct rtnl_tca *t)
-{
-	if (t->tc_mask & TCA_ATTR_PARENT)
-		return t->tc_parent;
-	else
-		return 0;
-}
-
-void tca_set_kind(struct rtnl_tca *t, const char *kind)
-{
-	strncpy(t->tc_kind, kind, sizeof(t->tc_kind) - 1);
-	t->tc_mask |= TCA_ATTR_KIND;
-}
-
-char *tca_get_kind(struct rtnl_tca *t)
-{
-	if (t->tc_mask & TCA_ATTR_KIND)
-		return t->tc_kind;
-	else
-		return NULL;
-}
-
-uint64_t tca_get_stat(struct rtnl_tca *t, int id)
-{
-	if (id < 0 || id > RTNL_TC_STATS_MAX)
-		return 0;
-
-	return t->tc_stats[id];
-}
-
-struct nl_msg *tca_build_msg(struct rtnl_tca *tca, int type, int flags)
-{
-	struct nl_msg *msg;
-	struct tcmsg tchdr = {
-		.tcm_family = AF_UNSPEC,
-		.tcm_ifindex = tca->tc_ifindex,
-		.tcm_handle = tca->tc_handle,
-		.tcm_parent = tca->tc_parent,
-	};
-
-	msg = nlmsg_build_simple(type, flags);
-	if (!msg)
-		goto nla_put_failure;
-
-	if (nlmsg_append(msg, &tchdr, sizeof(tchdr), 1) < 0)
-		goto nla_put_failure;
-
-	if (tca->tc_mask & TCA_ATTR_KIND)
-	    NLA_PUT_STRING(msg, TCA_KIND, tca->tc_kind);
-
-	return msg;
-
-nla_put_failure:
-	nlmsg_free(msg);
-	return NULL;
-}
-
-/** @endcond */
-
-/**
- * @name Utilities
- * @{
- */
-
-/**
- * Calculate time required to transmit buffer at a specific rate
- * @arg bufsize		Size of buffer to be transmited in bytes.
- * @arg rate		Transmit rate in bytes per second.
- *
- * Calculates the number of micro seconds required to transmit a
- * specific buffer at a specific transmit rate.
- *
- * @f[
- *   txtime=\frac{bufsize}{rate}10^6
- * @f]
- * 
- * @return Required transmit time in micro seconds.
- */
-int rtnl_tc_calc_txtime(int bufsize, int rate)
-{
-	double tx_time_secs;
-	
-	tx_time_secs = (double) bufsize / (double) rate;
-
-	return tx_time_secs * 1000000.;
-}
-
-/**
- * Calculate buffer size able to transmit in a specific time and rate.
- * @arg txtime		Available transmit time in micro seconds.
- * @arg rate		Transmit rate in bytes per second.
- *
- * Calculates the size of the buffer that can be transmitted in a
- * specific time period at a specific transmit rate.
- *
- * @f[
- *   bufsize=\frac{{txtime} \times {rate}}{10^6}
- * @f]
- *
- * @return Size of buffer in bytes.
- */
-int rtnl_tc_calc_bufsize(int txtime, int rate)
-{
-	double bufsize;
-
-	bufsize = (double) txtime * (double) rate;
-
-	return bufsize / 1000000.;
-}
-
-/**
- * Calculate the binary logarithm for a specific cell size
- * @arg cell_size	Size of cell, must be a power of two.
- * @return Binary logirhtm of cell size or a negative error code.
- */
-int rtnl_tc_calc_cell_log(int cell_size)
-{
-	int i;
-
-	for (i = 0; i < 32; i++)
-		if ((1 << i) == cell_size)
-			return i;
-
-	return nl_errno(EINVAL);
-}
-
-
-/** @} */
-
-/**
- * @name Rate Tables
- * @{
- */
-
-/**
- * Compute a transmission time lookup table
- * @arg dst	 Destination buffer of RTNL_TC_RTABLE_SIZE uint32_t[].
- * @arg mpu	 Minimal size of a packet at all times.
- * @arg overhead Overhead to be added to each packet.
- * @arg cell	 Size of cell, i.e. size of step between entries in bytes.
- * @arg rate	 Rate in bytes per second.
- *
- * Computes a table of RTNL_TC_RTABLE_SIZE entries specyfing the
- * transmission times for various packet sizes, e.g. the transmission
- * time for a packet of size \c pktsize could be looked up:
- * @code
- * txtime = table[pktsize >> log2(cell)];
- * @endcode
- */
-int rtnl_tc_build_rate_table(uint32_t *dst, uint8_t mpu, uint8_t overhead,
-			     int cell, int rate)
-{
-	int i, size, cell_log;
-
-	cell_log = rtnl_tc_calc_cell_log(cell);
-	if (cell_log < 0)
-		return cell_log;
-
-	for (i = 0; i < RTNL_TC_RTABLE_SIZE; i++) {
-		size = (i << cell_log) + overhead;
-		if (size < mpu)
-			size = mpu;
-
-		dst[i] = rtnl_tc_calc_txtime(size, rate);
-	}
-
-	return 0;
-}
-
-/** @} */
-
-/**
- * @name Traffic Control Handle Translations
- * @{
- */
-
-/**
- * Convert a traffic control handle to a character string (Reentrant).
- * @arg handle		traffic control handle
- * @arg buf		destination buffer
- * @arg len		buffer length
- *
- * Converts a tarffic control handle to a character string in the
- * form of \c MAJ:MIN and stores it in the specified destination buffer.
- *
- * @return The destination buffer or the type encoded in hexidecimal
- *         form if no match was found.
- */
-char * rtnl_tc_handle2str(uint32_t handle, char *buf, size_t len)
-{
-	if (TC_H_ROOT == handle)
-		snprintf(buf, len, "root");
-	else if (TC_H_UNSPEC == handle)
-		snprintf(buf, len, "none");
-	else if (0 == TC_H_MAJ(handle))
-		snprintf(buf, len, ":%02x", TC_H_MIN(handle));
-	else if (0 == TC_H_MIN(handle))
-		snprintf(buf, len, "%02x:", TC_H_MAJ(handle) >> 16);
-	else
-		snprintf(buf, len, "%02x:%02x",
-			TC_H_MAJ(handle) >> 16, TC_H_MIN(handle));
-
-	return buf;
-}
-
-/**
- * Convert a charactering strint to a traffic control handle
- * @arg name		traffic control handle as character string
- * @arg res		destination buffer
- *
- * Converts the provided character string specifying a traffic
- * control handle to the corresponding numeric value.
- *
- * The handle must be provided in one of the following formats:
- *  - root
- *  - none
- *  - XXXX:
- *  - :YYYY
- *  - XXXX:YYYY
- *  - XXXXYYYY
- *
- * @return 0 on success or a negative error code
- */
-int rtnl_tc_str2handle(const char *name, uint32_t *res)
-{
-	char *colon, *end;
-	uint32_t h;
-
-	if (!strcasecmp(name, "root")) {
-		*res = TC_H_ROOT;
-		return 0;
-	}
-
-	if (!strcasecmp(name, "none")) {
-		*res = TC_H_UNSPEC;
-		return 0;
-	}
-
-	h = strtoul(name, &colon, 16);
-
-	if (colon == name) {
-		/* :YYYY */
-		h = 0;
-		if (':' != *colon)
-			return -EINVAL;
-	}
-
-	if (':' == *colon) {
-		/* check if we would lose bits */
-		if (TC_H_MAJ(h))
-			return -ERANGE;
-		h <<= 16;
-
-		if ('\0' == colon[1]) {
-			/* XXXX: */
-			*res = h;
-		} else {
-			/* XXXX:YYYY */
-			uint32_t l = strtoul(colon+1, &end, 16);
-
-			/* check if we overlap with major part */
-			if (TC_H_MAJ(l))
-				return -ERANGE;
-
-			if ('\0' != *end)
-				return -EINVAL;
-
-			*res = (h | l);
-		}
-	} else if ('\0' == *colon) {
-		/* XXXXYYYY */
-		*res = h;
-	} else
-		return -EINVAL;
-
-	return 0;
-}
-
-/** @} */
-
-/** @} */