src/network/tc/qdisc.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later
   2  * Copyright © 2019 VMware, Inc. */
   3 #pragma once
   4
   5 #include "conf-parser.h"
   6 #include "networkd-util.h"
   7
   8 typedef struct Link Link;
   9 typedef struct Manager Manager;
  10 typedef struct Network Network;
  11
  12 typedef enum QDiscKind {
  13         QDISC_KIND_BFIFO,
  14         QDISC_KIND_CAKE,
  15         QDISC_KIND_CODEL,
  16         QDISC_KIND_DRR,
  17         QDISC_KIND_ETS,
  18         QDISC_KIND_FQ,
  19         QDISC_KIND_FQ_CODEL,
  20         QDISC_KIND_FQ_PIE,
  21         QDISC_KIND_GRED,
  22         QDISC_KIND_HHF,
  23         QDISC_KIND_HTB,
  24         QDISC_KIND_NETEM,
  25         QDISC_KIND_PFIFO,
  26         QDISC_KIND_PFIFO_FAST,
  27         QDISC_KIND_PFIFO_HEAD_DROP,
  28         QDISC_KIND_PIE,
  29         QDISC_KIND_QFQ,
  30         QDISC_KIND_SFB,
  31         QDISC_KIND_SFQ,
  32         QDISC_KIND_TBF,
  33         QDISC_KIND_TEQL,
  34         _QDISC_KIND_MAX,
  35         _QDISC_KIND_INVALID = -EINVAL,
  36 } QDiscKind;
  37
  38 typedef struct QDisc {
  39         Link *link;
  40         Network *network;
  41         ConfigSection *section;
  42         NetworkConfigSource source;
  43         NetworkConfigState state;
  44
  45         uint32_t handle;
  46         uint32_t parent;
  47
  48         char *tca_kind;
  49         QDiscKind kind;
  50 } QDisc;
  51
  52 typedef struct QDiscVTable {
  53         size_t object_size;
  54         const char *tca_kind;
  55         /* called in qdisc_new() */
  56         int (*init)(QDisc *qdisc);
  57         int (*fill_message)(Link *link, QDisc *qdisc, sd_netlink_message *m);
  58         int (*verify)(QDisc *qdisc);
  59         int (*is_ready)(QDisc *qdisc, Link *link);
  60 } QDiscVTable;
  61
  62 extern const QDiscVTable * const qdisc_vtable[_QDISC_KIND_MAX];
  63
  64 #define QDISC_VTABLE(q) ((q)->kind != _QDISC_KIND_INVALID ? qdisc_vtable[(q)->kind] : NULL)
  65
  66 /* For casting a qdisc into the various qdisc kinds */
  67 #define DEFINE_QDISC_CAST(UPPERCASE, MixedCase)                           \
  68         static inline MixedCase* UPPERCASE(QDisc *q) {                    \
  69                 if (_unlikely_(!q || q->kind != QDISC_KIND_##UPPERCASE))  \
  70                         return NULL;                                      \
  71                                                                           \
  72                 return (MixedCase*) q;                                    \
  73         }
  74
  75 DEFINE_NETWORK_CONFIG_STATE_FUNCTIONS(QDisc, qdisc);
  76
  77 QDisc* qdisc_free(QDisc *qdisc);
  78 int qdisc_new_static(QDiscKind kind, Network *network, const char *filename, unsigned section_line, QDisc **ret);
  79
  80 int link_find_qdisc(Link *link, uint32_t handle, uint32_t parent, const char *kind, QDisc **qdisc);
  81
  82 int link_request_qdisc(Link *link, QDisc *qdisc);
  83
  84 void network_drop_invalid_qdisc(Network *network);
  85
  86 int manager_rtnl_process_qdisc(sd_netlink *rtnl, sd_netlink_message *message, Manager *m);
  87
  88 DEFINE_SECTION_CLEANUP_FUNCTIONS(QDisc, qdisc_free);
  89
  90 CONFIG_PARSER_PROTOTYPE(config_parse_qdisc_parent);
  91 CONFIG_PARSER_PROTOTYPE(config_parse_qdisc_handle);
  92
  93 #include "cake.h"
  94 #include "codel.h"
  95 #include "ets.h"
  96 #include "fifo.h"
  97 #include "fq-codel.h"
  98 #include "fq-pie.h"
  99 #include "fq.h"
 100 #include "gred.h"
 101 #include "hhf.h"
 102 #include "htb.h"
 103 #include "pie.h"
 104 #include "qfq.h"
 105 #include "netem.h"
 106 #include "drr.h"
 107 #include "sfb.h"
 108 #include "sfq.h"
 109 #include "tbf.h"
 110 #include "teql.h"