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/*
* DECT Link Control Entity (LCE)
*
* Copyright (c) 2009-2010 Patrick McHardy <kaber@trash.net>
*/
#ifndef _LIBDECT_LCE_H
#define _LIBDECT_LCE_H
#include <sys/socket.h>
#include <linux/dect.h>
#include <list.h>
#include <s_fmt.h>
#include <utils.h>
static inline void dect_mbuf_dump(enum dect_debug_subsys subsys,
const struct dect_msg_buf *mb,
const char *prefix)
{
dect_hexdump(subsys, prefix, mb->data, mb->len);
}
/**
* enum dect_transaction_role - the LCE's role in a transaction
*
* @DECT_TRANSACTION_INITIATOR: Transaction was initiated by higher layer protocol entity
* @DECT_TRANSACTION_RESPONDER: Transaction was initiated by network
*/
enum dect_transaction_role {
DECT_TRANSACTION_INITIATOR,
DECT_TRANSACTION_RESPONDER,
__DECT_TRANSACTION_MAX
};
#define DECT_TRANSACTION_MAX (__DECT_TRANSACTION_MAX - 1)
enum dect_transaction_state {
DECT_TRANSACTION_CLOSED,
DECT_TRANSACTION_OPEN,
};
/* Connectionless NWK layer transaction value */
#define DECT_TV_CONNECTIONLESS 6
enum dect_release_modes {
DECT_DDL_RELEASE_NORMAL,
DECT_DDL_RELEASE_PARTIAL,
};
/**
* struct dect_transaction - DECT protocol transaction
*
* @list: Datalink transaction list node
* @link: Associated data link
* @mb: Message buffer for retransmissions
* @pd: Protocol discriminator
* @role: Role (initiator/responder)
* @tv: Transaction value
*/
enum dect_s_pd_values;
struct dect_transaction {
struct list_head list;
struct dect_data_link *link;
struct dect_msg_buf *mb;
enum dect_pds pd;
enum dect_transaction_role role:8;
enum dect_transaction_state state:8;
uint16_t tv;
};
extern int dect_ddl_transaction_open(struct dect_handle *dh,
struct dect_transaction *ta,
struct dect_data_link *ddl,
enum dect_pds pd);
extern struct dect_data_link *dect_ddl_connect(struct dect_handle *dh,
const struct dect_ipui *ipui);
extern int dect_ddl_set_ipui(struct dect_handle *dh, struct dect_data_link *ddl,
const struct dect_ipui *ipui);
extern int dect_transaction_open(struct dect_handle *dh,
struct dect_transaction *ta,
const struct dect_ipui *ipui,
enum dect_pds pd);
extern void dect_transaction_confirm(struct dect_handle *dh,
struct dect_transaction *ta,
const struct dect_transaction *req);
extern void dect_transaction_close(struct dect_handle *dh,
struct dect_transaction *ta,
enum dect_release_modes mode);
extern void dect_transaction_get_ulei(struct sockaddr_dect_lu *addr,
const struct dect_transaction *ta);
extern int dect_lce_send(const struct dect_handle *dh,
struct dect_transaction *ta,
const struct dect_sfmt_msg_desc *desc,
const struct dect_msg_common *msg, uint8_t type);
extern int dect_lce_retransmit(const struct dect_handle *dh,
struct dect_transaction *ta);
extern ssize_t dect_lce_broadcast(const struct dect_handle *dh,
const struct dect_msg_buf *mb,
bool long_page);
/**
* struct dect_nwk_protocol - NWK layer protocol
*
* @name: Protocol name
* @pd: Protocol discriminator
* @open: Open a new transaction initiated by the network
* @shutdown: Perform an active shutdown of the transaction
* @rcv: Receive a message related to an active transaction
*/
enum dect_cipher_states;
struct dect_nwk_protocol {
const char *name;
enum dect_pds pd;
uint16_t max_transactions;
void (*open)(struct dect_handle *dh,
struct dect_transaction *req,
struct dect_msg_buf *mb);
void (*shutdown)(struct dect_handle *dh,
struct dect_transaction *req);
void (*rcv)(struct dect_handle *dh,
struct dect_transaction *ta,
struct dect_msg_buf *mb);
void (*encrypt_ind)(struct dect_handle *dh,
struct dect_transaction *ta,
enum dect_cipher_states state);
};
extern void dect_lce_register_protocol(const struct dect_nwk_protocol *protocol);
/**
* struct dect_lte - Location Table Entry
*
* @list: Location table list node
* @ipui: International Portable User ID
* @tpui: Temporary Portable User ID
*/
struct dect_lte {
struct list_head list;
struct dect_ipui ipui;
struct dect_tpui tpui;
};
struct dect_location_table {
struct list_head entries;
};
enum dect_data_link_states {
DECT_DATA_LINK_RELEASED,
DECT_DATA_LINK_ESTABLISHED,
DECT_DATA_LINK_ESTABLISH_PENDING,
DECT_DATA_LINK_RELEASE_PENDING,
DECT_DATA_LINK_SUSPENDED,
DECT_DATA_LINK_SUSPEND_PENDING,
DECT_DATA_LINK_RESUME_PENDING,
__DECT_DATA_LINK_STATE_MAX
};
#define DECT_DATA_LINK_STATE_MAX (__DECT_DATA_LINK_STATE_MAX - 1)
enum dect_data_link_flags {
DECT_DATA_LINK_IPUI_VALID = 0x1,
};
/**
* struct dect_data_link
*
* @list: DECT handle link list node
* @dfd: Associated socket file descriptor
* @dlei: Data Link Endpoint identifier
* @ipui: International Portable User ID
* @state: Data link state
* @sdu_timer: Establish without SDU timer (LCE.05)
* @release_timer: Normal link release timer (LCE.01)
* @page_timer: Indirect establish timer (LCE.03)
* @page_count: Number of page messages sent
* @msg_queue: Message queue used during ESTABLISH_PENDING state
*/
struct dect_data_link {
struct list_head list;
struct sockaddr_dect_ssap dlei;
struct dect_ipui ipui;
struct dect_fd *dfd;
enum dect_data_link_states state;
enum dect_cipher_states cipher;
struct dect_timer *sdu_timer;
struct dect_timer *release_timer;
struct dect_timer *page_timer;
uint8_t page_count;
uint8_t flags;
struct list_head msg_queue;
struct list_head transactions;
};
#define DECT_DDL_RELEASE_TIMEOUT 5 /* seconds */
#define DECT_DDL_ESTABLISH_SDU_TIMEOUT 5 /* seconds */
#define DECT_DDL_PAGE_TIMEOUT 5 /* seconds */
#define DECT_DDL_PAGE_RETRANS_MAX 3 /* N.300 */
extern int dect_ddl_set_cipher_key(const struct dect_data_link *ddl,
const uint8_t ck[]);
extern int dect_ddl_encrypt_req(const struct dect_data_link *ddl,
enum dect_cipher_states status);
/* LCE message types */
enum dect_lce_msg_types {
DECT_LCE_PAGE_RESPONSE = 0x71,
DECT_LCE_PAGE_REJECT = 0x72,
};
/**
* struct dect_lce_page_response_msg - LCE Page response S-Format message
*
* @common: Message header
* @portable_identity: Portable Identity IE
* @fixed_identity: Fixed Identity IE
* @nwk_assigned_identity: NWK-assigned Identity IE (optional)
* @cipher_info: Cipher Info IE (optional)
* @escape_to_proprietary: Escape to proprietary IE (optional)
*/
struct dect_lce_page_response_msg {
struct dect_msg_common common;
struct dect_ie_portable_identity *portable_identity;
struct dect_ie_fixed_identity *fixed_identity;
struct dect_ie_nwk_assigned_identity *nwk_assigned_identity;
struct dect_ie_cipher_info *cipher_info;
struct dect_ie_escape_to_proprietary *escape_to_proprietary;
};
/**
* struct dect_lce_page_reject_msg - LCE Page reject S-Format message
*
* @common: Message header
* @portable_identity: Portable Identity IE
* @fixed_identity: Fixed Identity IE
* @reject_reason: Reject reason IE
* @escape_to_proprietary: Escape to proprietary IE (optional)
*/
struct dect_lce_page_reject_msg {
struct dect_msg_common common;
struct dect_ie_portable_identity *portable_identity;
struct dect_ie_fixed_identity *fixed_identity;
struct dect_ie_reject_reason *reject_reason;
struct dect_ie_escape_to_proprietary *escape_to_proprietary;
};
extern void dect_pp_change_pmid(struct dect_handle *dh);
extern int dect_lce_init(struct dect_handle *dh);
extern void dect_lce_exit(struct dect_handle *dh);
#endif /* _LIBDECT_LCE_H */
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