extcap/dpauxmon_user.h

   1 /** @file
   2  *
   3  * Copyright 2018, Dirk Eibach, Guntermann & Drunck GmbH <dirk.eibach@gdsys.cc>
   4  *
   5  * SPDX-License-Identifier: GPL-2.0-or-later
   6  */
   7
   8 #ifndef DPAUXMON_USER_H_
   9 #define DPAUXMON_USER_H_
  10
  11 #include <linux/types.h>
  12
  13 /*
  14  * Generic Netlink Interface for DisplayPort AUX channel monitoring
  15  */
  16
  17 /*
  18  * enum dpauxmon_cmd - supported dpauxmon netlink commands
  19  *
  20  * @__DPAUXMON_CMD_UNSPEC: unspecified command to catch errors
  21  *
  22  * @DPAUXMON_CMD_START: start monitoring on %DPAUXMON_ATTR_IFINDEX
  23  * @DPAUXMON_CMD_STOP: stop monitoring on %DPAUXMON_ATTR_IFINDEX
  24  * @DPAUXMON_CMD_DATA: captured data from %DPAUXMON_ATTR_IFINDEX
  25  */
  26 enum dpauxmon_cmd {
  27         __DPAUXMON_CMD_UNSPEC,
  28         DPAUXMON_CMD_START,
  29         DPAUXMON_CMD_STOP,
  30         DPAUXMON_CMD_DATA,
  31
  32         /* keep last */
  33         __DPAUXMON_CMD_MAX,
  34         DPAUXMON_CMD_MAX = __DPAUXMON_CMD_MAX - 1,
  35 };
  36
  37 /*
  38  * enum dpauxmon_attr - dpauxmon netlink attributes
  39  *
  40  * @__DPAUXMON_ATTR_UNSPEC: unspecified attribute to catch errors
  41  *
  42  * @DPAUXMON_ATTR_IFINDEX: index of dpauxmon unit to operate on
  43  * @DPAUXMON_ATTR_DATA: dpauxmon data payload
  44  * @DPAUXMON_ATTR_FROM_SOURCE: data payload is sent from source
  45  * @DPAUXMON_ATTR_TIMESTAMP: data payload is sent from source
  46  */
  47 enum dpauxmon_attr {
  48         __DPAUXMON_ATTR_UNSPEC,
  49         DPAUXMON_ATTR_IFINDEX, /* NLA_U32 */
  50         DPAUXMON_ATTR_DATA, /* NLA_BINARY */
  51         DPAUXMON_ATTR_FROM_SOURCE, /* NLA_FLAG */
  52         DPAUXMON_ATTR_TIMESTAMP, /* NLA_MSECS */
  53
  54         /* keep last */
  55         __DPAUXMON_ATTR_AFTER_LAST,
  56         DPAUXMON_ATTR_MAX = __DPAUXMON_ATTR_AFTER_LAST - 1
  57 };
  58
  59 #endif