X-Git-Url: http://git.onelab.eu/?p=libnl.git;a=blobdiff_plain;f=lib%2Froute%2Fsch%2Fsfq.c;fp=lib%2Froute%2Fsch%2Fsfq.c;h=0000000000000000000000000000000000000000;hp=2e7d3ce83f4e948de9b17d0bbbf41c6efb0ba12d;hb=332c8b7561dcac7ac95cc0d07328b1cb22d780a6;hpb=eabdd897b75ecc1fac5e255229a899126085e57a diff --git a/lib/route/sch/sfq.c b/lib/route/sch/sfq.c deleted file mode 100644 index 2e7d3ce..0000000 --- a/lib/route/sch/sfq.c +++ /dev/null @@ -1,294 +0,0 @@ -/* - * lib/route/sch/sfq.c SFQ Qdisc - * - * 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 - */ - -/** - * @ingroup qdisc - * @defgroup sfq Stochastic Fairness Queueing (SFQ) - * @brief - * - * @par Parameter Description - * - \b Quantum: Number of bytes to send out per slot and round. - * - \b Perturbation: Timer period between changing the hash function. - * - \b Limit: Upper limit of queue in number of packets before SFQ starts - * dropping packets. - * - \b Divisor: Hash table divisor, i.e. size of hash table. - * @{ - */ - -#include -#include -#include -#include -#include -#include -#include - -/** @cond SKIP */ -#define SCH_SFQ_ATTR_QUANTUM 0x01 -#define SCH_SFQ_ATTR_PERTURB 0x02 -#define SCH_SFQ_ATTR_LIMIT 0x04 -#define SCH_SFQ_ATTR_DIVISOR 0x08 -#define SCH_SFQ_ATTR_FLOWS 0x10 -/** @endcond */ - -static inline struct rtnl_sfq *sfq_qdisc(struct rtnl_qdisc *qdisc) -{ - return (struct rtnl_sfq *) qdisc->q_subdata; -} - -static inline struct rtnl_sfq *sfq_alloc(struct rtnl_qdisc *qdisc) -{ - if (!qdisc->q_subdata) - qdisc->q_subdata = calloc(1, sizeof(struct rtnl_sfq)); - - return sfq_qdisc(qdisc); -} - -static int sfq_msg_parser(struct rtnl_qdisc *qdisc) -{ - struct rtnl_sfq *sfq; - struct tc_sfq_qopt *opts; - - if (!(qdisc->q_mask & TCA_ATTR_OPTS)) - return 0; - - if (qdisc->q_opts->d_size < sizeof(*opts)) - return nl_error(EINVAL, "SFQ specific options size mismatch"); - - sfq = sfq_alloc(qdisc); - if (!sfq) - return nl_errno(ENOMEM); - - opts = (struct tc_sfq_qopt *) qdisc->q_opts->d_data; - - sfq->qs_quantum = opts->quantum; - sfq->qs_perturb = opts->perturb_period; - sfq->qs_limit = opts->limit; - sfq->qs_divisor = opts->divisor; - sfq->qs_flows = opts->flows; - - sfq->qs_mask = (SCH_SFQ_ATTR_QUANTUM | SCH_SFQ_ATTR_PERTURB | - SCH_SFQ_ATTR_LIMIT | SCH_SFQ_ATTR_DIVISOR | - SCH_SFQ_ATTR_FLOWS); - - return 0; -} - -static void sfq_free_data(struct rtnl_qdisc *qdisc) -{ - free(qdisc->q_subdata); -} - -static int sfq_dump_brief(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, - int line) -{ - struct rtnl_sfq *sfq = sfq_qdisc(qdisc); - - if (sfq) - dp_dump(p, " quantum %u perturb %us", - sfq->qs_quantum, - nl_ticks2us(sfq->qs_perturb * nl_get_hz())); - - return line; -} - -static int sfq_dump_full(struct rtnl_qdisc *qdisc, struct nl_dump_params *p, - int line) -{ - struct rtnl_sfq *sfq = sfq_qdisc(qdisc); - - if (sfq) - dp_dump(p, "limit %u divisor %u", - sfq->qs_limit, sfq->qs_divisor); - - return line; -} - -static struct nl_msg *sfq_get_opts(struct rtnl_qdisc *qdisc) -{ - struct rtnl_sfq *sfq; - struct tc_sfq_qopt opts; - struct nl_msg *msg; - - sfq = sfq_qdisc(qdisc); - if (!sfq) - return NULL; - - msg = nlmsg_build_no_hdr(); - if (!msg) - goto errout; - - memset(&opts, 0, sizeof(opts)); - opts.quantum = sfq->qs_quantum; - opts.perturb_period = sfq->qs_perturb; - opts.limit = sfq->qs_limit; - - if (nlmsg_append(msg, &opts, sizeof(opts), 0) < 0) - goto errout; - - return msg; -errout: - nlmsg_free(msg); - return NULL; -} - -/** - * @name Attribute Access - * @{ - */ - -/** - * Set quantum of SFQ qdisc. - * @arg qdisc SFQ qdisc to be modified. - * @arg quantum New quantum in bytes. - * @return 0 on success or a negative error code. - */ -int rtnl_sfq_set_quantum(struct rtnl_qdisc *qdisc, int quantum) -{ - struct rtnl_sfq *sfq; - - sfq = sfq_alloc(qdisc); - if (!sfq) - return nl_errno(ENOMEM); - - sfq->qs_quantum = quantum; - sfq->qs_mask |= SCH_SFQ_ATTR_QUANTUM; - - return 0; -} - -/** - * Get quantum of SFQ qdisc. - * @arg qdisc SFQ qdisc. - * @return Quantum in bytes or a negative error code. - */ -int rtnl_sfq_get_quantum(struct rtnl_qdisc *qdisc) -{ - struct rtnl_sfq *sfq; - - sfq = sfq_qdisc(qdisc); - if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_QUANTUM) - return sfq->qs_quantum; - else - return nl_errno(ENOENT); -} - -/** - * Set limit of SFQ qdisc. - * @arg qdisc SFQ qdisc to be modified. - * @arg limit New limit in number of packets. - * @return 0 on success or a negative error code. - */ -int rtnl_sfq_set_limit(struct rtnl_qdisc *qdisc, int limit) -{ - struct rtnl_sfq *sfq; - - sfq = sfq_alloc(qdisc); - if (!sfq) - return nl_errno(ENOMEM); - - sfq->qs_limit = limit; - sfq->qs_mask |= SCH_SFQ_ATTR_LIMIT; - - return 0; -} - -/** - * Get limit of SFQ qdisc. - * @arg qdisc SFQ qdisc. - * @return Limit or a negative error code. - */ -int rtnl_sfq_get_limit(struct rtnl_qdisc *qdisc) -{ - struct rtnl_sfq *sfq; - - sfq = sfq_qdisc(qdisc); - if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_LIMIT) - return sfq->qs_limit; - else - return nl_errno(ENOENT); -} - -/** - * Set perturbation interval of SFQ qdisc. - * @arg qdisc SFQ qdisc to be modified. - * @arg perturb New perturbation interval in seconds. - * @note A value of 0 disables perturbation altogether. - * @return 0 on success or a negative error code. - */ -int rtnl_sfq_set_perturb(struct rtnl_qdisc *qdisc, int perturb) -{ - struct rtnl_sfq *sfq; - - sfq = sfq_alloc(qdisc); - if (!sfq) - return nl_errno(ENOMEM); - - sfq->qs_perturb = perturb; - sfq->qs_mask |= SCH_SFQ_ATTR_PERTURB; - - return 0; -} - -/** - * Get perturbation interval of SFQ qdisc. - * @arg qdisc SFQ qdisc. - * @return Perturbation interval in seconds or a negative error code. - */ -int rtnl_sfq_get_perturb(struct rtnl_qdisc *qdisc) -{ - struct rtnl_sfq *sfq; - - sfq = sfq_qdisc(qdisc); - if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_PERTURB) - return sfq->qs_perturb; - else - return nl_errno(ENOENT); -} - -/** - * Get divisor of SFQ qdisc. - * @arg qdisc SFQ qdisc. - * @return Divisor in number of entries or a negative error code. - */ -int rtnl_sfq_get_divisor(struct rtnl_qdisc *qdisc) -{ - struct rtnl_sfq *sfq; - - sfq = sfq_qdisc(qdisc); - if (sfq && sfq->qs_mask & SCH_SFQ_ATTR_DIVISOR) - return sfq->qs_divisor; - else - return nl_errno(ENOENT); -} - -/** @} */ - -static struct rtnl_qdisc_ops sfq_ops = { - .qo_kind = "sfq", - .qo_msg_parser = sfq_msg_parser, - .qo_free_data = sfq_free_data, - .qo_dump[NL_DUMP_BRIEF] = sfq_dump_brief, - .qo_dump[NL_DUMP_FULL] = sfq_dump_full, - .qo_get_opts = sfq_get_opts, -}; - -static void __init sfq_init(void) -{ - rtnl_qdisc_register(&sfq_ops); -} - -static void __exit sfq_exit(void) -{ - rtnl_qdisc_unregister(&sfq_ops); -} - -/** @} */