src/network/tc/tc.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include "networkd-link.h"
   5
   6 typedef enum TrafficControlKind {
   7         TC_KIND_QDISC,
   8         TC_KIND_TCLASS,
   9         TC_KIND_FILTER,
  10         _TC_KIND_MAX,
  11         _TC_KIND_INVALID = -EINVAL,
  12 } TrafficControlKind;
  13
  14 typedef struct TrafficControl {
  15         TrafficControlKind kind;
  16 } TrafficControl;
  17
  18 /* For casting a tc into the various tc kinds */
  19 #define DEFINE_TC_CAST(UPPERCASE, MixedCase)                           \
  20         static inline MixedCase* TC_TO_##UPPERCASE(TrafficControl *tc) {                    \
  21                 if (_unlikely_(!tc || tc->kind != TC_KIND_##UPPERCASE))  \
  22                         return NULL;                                      \
  23                                                                           \
  24                 return (MixedCase*) tc;                                    \
  25         }
  26
  27 /* For casting the various tc kinds into a tc */
  28 #define TC(tc) (&(tc)->meta)
  29
  30 void traffic_control_free(TrafficControl *tc);
  31 int link_configure_traffic_control(Link *link);
  32 void network_drop_invalid_traffic_control(Network *network);