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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/* linux/caif_socket.h
* CAIF Definitions for CAIF socket and network layer
* Copyright (C) ST-Ericsson AB 2010
* Author: Sjur Brendeland
* License terms: GNU General Public License (GPL) version 2
*/
#ifndef _LINUX_CAIF_SOCKET_H
#define _LINUX_CAIF_SOCKET_H
#include <linux/types.h>
#include <linux/socket.h>
/**
* enum caif_link_selector - Physical Link Selection.
* @CAIF_LINK_HIGH_BANDW: Physical interface for high-bandwidth
* traffic.
* @CAIF_LINK_LOW_LATENCY: Physical interface for low-latency
* traffic.
*
* CAIF Link Layers can register their link properties.
* This enum is used for choosing between CAIF Link Layers when
* setting up CAIF Channels when multiple CAIF Link Layers exists.
*/
enum caif_link_selector {
CAIF_LINK_HIGH_BANDW,
CAIF_LINK_LOW_LATENCY
};
/**
* enum caif_channel_priority - CAIF channel priorities.
*
* @CAIF_PRIO_MIN: Min priority for a channel.
* @CAIF_PRIO_LOW: Low-priority channel.
* @CAIF_PRIO_NORMAL: Normal/default priority level.
* @CAIF_PRIO_HIGH: High priority level
* @CAIF_PRIO_MAX: Max priority for channel
*
* Priority can be set on CAIF Channels in order to
* prioritize between traffic on different CAIF Channels.
* These priority levels are recommended, but the priority value
* is not restricted to the values defined in this enum, any value
* between CAIF_PRIO_MIN and CAIF_PRIO_MAX could be used.
*/
enum caif_channel_priority {
CAIF_PRIO_MIN = 0x01,
CAIF_PRIO_LOW = 0x04,
CAIF_PRIO_NORMAL = 0x0f,
CAIF_PRIO_HIGH = 0x14,
CAIF_PRIO_MAX = 0x1F
};
/**
* enum caif_protocol_type - CAIF Channel type.
* @CAIFPROTO_AT: Classic AT channel.
* @CAIFPROTO_DATAGRAM: Datagram channel.
* @CAIFPROTO_DATAGRAM_LOOP: Datagram loopback channel, used for testing.
* @CAIFPROTO_UTIL: Utility (Psock) channel.
* @CAIFPROTO_RFM: Remote File Manager
* @CAIFPROTO_DEBUG: Debug link
*
* This enum defines the CAIF Channel type to be used. This defines
* the service to connect to on the modem.
*/
enum caif_protocol_type {
CAIFPROTO_AT,
CAIFPROTO_DATAGRAM,
CAIFPROTO_DATAGRAM_LOOP,
CAIFPROTO_UTIL,
CAIFPROTO_RFM,
CAIFPROTO_DEBUG,
_CAIFPROTO_MAX
};
#define CAIFPROTO_MAX _CAIFPROTO_MAX
/**
* enum caif_at_type - AT Service Endpoint
* @CAIF_ATTYPE_PLAIN: Connects to a plain vanilla AT channel.
*/
enum caif_at_type {
CAIF_ATTYPE_PLAIN = 2
};
/**
* enum caif_debug_type - Content selection for debug connection
* @CAIF_DEBUG_TRACE_INTERACTIVE: Connection will contain
* both trace and interactive debug.
* @CAIF_DEBUG_TRACE: Connection contains trace only.
* @CAIF_DEBUG_INTERACTIVE: Connection to interactive debug.
*/
enum caif_debug_type {
CAIF_DEBUG_TRACE_INTERACTIVE = 0,
CAIF_DEBUG_TRACE,
CAIF_DEBUG_INTERACTIVE,
};
/**
* enum caif_debug_service - Debug Service Endpoint
* @CAIF_RADIO_DEBUG_SERVICE: Debug service on the Radio sub-system
* @CAIF_APP_DEBUG_SERVICE: Debug for the applications sub-system
*/
enum caif_debug_service {
CAIF_RADIO_DEBUG_SERVICE = 1,
CAIF_APP_DEBUG_SERVICE
};
/**
* struct sockaddr_caif - the sockaddr structure for CAIF sockets.
* @family: Address family number, must be AF_CAIF.
* @u: Union of address data 'switched' by family.
* :
* @u.at: Applies when family = CAIFPROTO_AT.
*
* @u.at.type: Type of AT link to set up (enum caif_at_type).
*
* @u.util: Applies when family = CAIFPROTO_UTIL
*
* @u.util.service: Utility service name.
*
* @u.dgm: Applies when family = CAIFPROTO_DATAGRAM
*
* @u.dgm.connection_id: Datagram connection id.
*
* @u.dgm.nsapi: NSAPI of the PDP-Context.
*
* @u.rfm: Applies when family = CAIFPROTO_RFM
*
* @u.rfm.connection_id: Connection ID for RFM.
*
* @u.rfm.volume: Volume to mount.
*
* @u.dbg: Applies when family = CAIFPROTO_DEBUG.
*
* @u.dbg.type: Type of debug connection to set up
* (caif_debug_type).
*
* @u.dbg.service: Service sub-system to connect (caif_debug_service
* Description:
* This structure holds the connect parameters used for setting up a
* CAIF Channel. It defines the service to connect to on the modem.
*/
struct sockaddr_caif {
__kernel_sa_family_t family;
union {
struct {
__u8 type; /* type: enum caif_at_type */
} at; /* CAIFPROTO_AT */
struct {
char service[16];
} util; /* CAIFPROTO_UTIL */
union {
__u32 connection_id;
__u8 nsapi;
} dgm; /* CAIFPROTO_DATAGRAM(_LOOP)*/
struct {
__u32 connection_id;
char volume[16];
} rfm; /* CAIFPROTO_RFM */
struct {
__u8 type; /* type:enum caif_debug_type */
__u8 service; /* service:caif_debug_service */
} dbg; /* CAIFPROTO_DEBUG */
} u;
};
/**
* enum caif_socket_opts - CAIF option values for getsockopt and setsockopt.
*
* @CAIFSO_LINK_SELECT: Selector used if multiple CAIF Link layers are
* available. Either a high bandwidth
* link can be selected (CAIF_LINK_HIGH_BANDW) or
* a low latency link (CAIF_LINK_LOW_LATENCY).
* This option is of type __u32.
* Alternatively SO_BINDTODEVICE can be used.
*
* @CAIFSO_REQ_PARAM: Used to set the request parameters for a
* utility channel. (maximum 256 bytes). This
* option must be set before connecting.
*
* @CAIFSO_RSP_PARAM: Gets the response parameters for a utility
* channel. (maximum 256 bytes). This option
* is valid after a successful connect.
*
*
* This enum defines the CAIF Socket options to be used on a socket
* of type PF_CAIF.
*
*/
enum caif_socket_opts {
CAIFSO_LINK_SELECT = 127,
CAIFSO_REQ_PARAM = 128,
CAIFSO_RSP_PARAM = 129,
};
#endif /* _LINUX_CAIF_SOCKET_H */