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Diffstat (limited to 'extcap/dpauxmon_user.h')
| -rw-r--r-- | extcap/dpauxmon_user.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/extcap/dpauxmon_user.h b/extcap/dpauxmon_user.h new file mode 100644 index 00000000..645e4b8b --- /dev/null +++ b/extcap/dpauxmon_user.h @@ -0,0 +1,59 @@ +/** @file + * + * Copyright 2018, Dirk Eibach, Guntermann & Drunck GmbH <dirk.eibach@gdsys.cc> + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef DPAUXMON_USER_H_ +#define DPAUXMON_USER_H_ + +#include <linux/types.h> + +/* + * Generic Netlink Interface for DisplayPort AUX channel monitoring + */ + +/* + * enum dpauxmon_cmd - supported dpauxmon netlink commands + * + * @__DPAUXMON_CMD_UNSPEC: unspecified command to catch errors + * + * @DPAUXMON_CMD_START: start monitoring on %DPAUXMON_ATTR_IFINDEX + * @DPAUXMON_CMD_STOP: stop monitoring on %DPAUXMON_ATTR_IFINDEX + * @DPAUXMON_CMD_DATA: captured data from %DPAUXMON_ATTR_IFINDEX + */ +enum dpauxmon_cmd { + __DPAUXMON_CMD_UNSPEC, + DPAUXMON_CMD_START, + DPAUXMON_CMD_STOP, + DPAUXMON_CMD_DATA, + + /* keep last */ + __DPAUXMON_CMD_MAX, + DPAUXMON_CMD_MAX = __DPAUXMON_CMD_MAX - 1, +}; + +/* + * enum dpauxmon_attr - dpauxmon netlink attributes + * + * @__DPAUXMON_ATTR_UNSPEC: unspecified attribute to catch errors + * + * @DPAUXMON_ATTR_IFINDEX: index of dpauxmon unit to operate on + * @DPAUXMON_ATTR_DATA: dpauxmon data payload + * @DPAUXMON_ATTR_FROM_SOURCE: data payload is sent from source + * @DPAUXMON_ATTR_TIMESTAMP: data payload is sent from source + */ +enum dpauxmon_attr { + __DPAUXMON_ATTR_UNSPEC, + DPAUXMON_ATTR_IFINDEX, /* NLA_U32 */ + DPAUXMON_ATTR_DATA, /* NLA_BINARY */ + DPAUXMON_ATTR_FROM_SOURCE, /* NLA_FLAG */ + DPAUXMON_ATTR_TIMESTAMP, /* NLA_MSECS */ + + /* keep last */ + __DPAUXMON_ATTR_AFTER_LAST, + DPAUXMON_ATTR_MAX = __DPAUXMON_ATTR_AFTER_LAST - 1 +}; + +#endif |