126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/gsm/protocol/gsm_48_049.h>
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struct osmo_cbsp_cbc_client;
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struct osmo_sabp_cbc_client;
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/*********************************************************************************
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* CBC Peer
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*********************************************************************************/
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enum cbc_peer_protocol {
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CBC_PEER_PROTO_CBSP,
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CBC_PEER_PROTO_SABP,
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};
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struct cbc_peer {
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struct llist_head list; /* linked to cbc.peers */
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const char *name;
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char *remote_host; /* remote IP address in string format */
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int remote_port; /* remote port number or -1 for random */
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enum cbc_peer_protocol proto;
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union {
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struct osmo_cbsp_cbc_client *cbsp;
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struct osmo_sabp_cbc_client *sabp;
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} client;
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};
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extern const struct value_string cbc_peer_proto_name[];
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/*********************************************************************************
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* CBC Message
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*********************************************************************************/
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/* a single SMSCB page of 82 user bytes (excluding any GSM specific header) */
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#define SMSCB_RAW_PAGE_LEN 82
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#define SMSCB_MAX_NUM_PAGES 15
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/* representation of a plain SMSCB message without any metadata such as cell lists */
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struct smscb_message {
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uint16_t message_id;
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uint16_t serial_nr;
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bool is_etws;
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union {
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struct {
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/* data coding scheme */
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uint8_t dcs;
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/* number of pages containing valid information */
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unsigned int num_pages;
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/* actual page data, concatenated */
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uint8_t data[SMSCB_MAX_NUM_PAGES][SMSCB_RAW_PAGE_LEN];
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/* FIXME: do we need information on the total length to
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* determine which is the last block used in [at least the last]
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* page? */
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} cbs;
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struct {
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/* WarningType 16bit parameter as per 23.041 9.3.24 */
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uint16_t warning_type;
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uint8_t warning_sec_info[50];
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} etws;
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};
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};
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enum cbc_message_scope {
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CBC_MSG_SCOPE_PLMN,
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/* FIXME: more local/regional scopes than PLMN-wide */
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};
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/* link between a SMSCB message and a peer (BSC, RNC, MME) */
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struct cbc_message_peer {
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struct llist_head list; /* lined to cbc_message.peers */
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struct cbc_peer *peer; /* peer */
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bool acknowledged; /* did peer acknowledge this message yet? */
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};
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/* internal representation of a CBC message */
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struct cbc_message {
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struct llist_head list; /* global list of currently active CBCs */
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const char *cbe_name; /* name of the CBE originating this SMSCB */
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enum cbsp_category priority;
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uint16_t rep_period; /* repetition period (1..4095) */
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bool extended_cbch; /* basic (false) or extended (true) CBCH */
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uint32_t warning_period_sec; /* warning period in seconds (0xffffffff = unlimited) */
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uint16_t num_bcast; /* number of broadcasts requested (0=unlimited) */
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enum cbc_message_scope scope;
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/* FIXME: data for other scopes than PLMN-wide */
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/* SMSCB message with id, serial, dcs, pages, ... */
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struct smscb_message msg;
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/* CBC peers (BSCs, RNCs, MMEs) to which this message has already been sent */
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struct llist_head peers;
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};
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/*********************************************************************************
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* CBC itself
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*********************************************************************************/
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struct cbc {
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struct {
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bool permit_unknown_peers;
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} config;
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struct llist_head messages; /* cbc_message.list */
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struct llist_head peers; /* cbc_peer.list */
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};
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extern struct cbc *g_cbc;
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int cbc_message_del_peer(struct cbc_message *cbcmsg, struct cbc_peer *peer);
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int cbc_message_add_peer(struct cbc_message *cbcmsg, struct cbc_peer *peer);
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struct cbc_peer *cbc_peer_by_name(const char *name);
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struct cbc_peer *cbc_peer_by_addr_proto(const char *remote_host, uint16_t remote_port,
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enum cbc_peer_protocol proto);
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struct cbc_peer *cbc_peer_create(const char *name, enum cbc_peer_protocol proto);
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void cbc_peer_remove(struct cbc_peer *peer);
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