576 lines
18 KiB
C
576 lines
18 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/core/utils.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/prim.h>
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#include <osmocom/core/socket.h>
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#include <osmocom/core/rate_ctr.h>
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extern struct llist_head osmo_ss7_instances;
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struct osmo_ss7_instance;
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struct osmo_ss7_user;
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struct osmo_sccp_instance;
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struct osmo_mtp_prim;
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struct osmo_xua_layer_manager;
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int osmo_ss7_init(void);
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int osmo_ss7_find_free_rctx(struct osmo_ss7_instance *inst);
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bool osmo_ss7_pc_is_local(struct osmo_ss7_instance *inst, uint32_t pc);
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int osmo_ss7_pointcode_parse(struct osmo_ss7_instance *inst, const char *str);
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int osmo_ss7_pointcode_parse_mask_or_len(struct osmo_ss7_instance *inst, const char *in);
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const char *osmo_ss7_pointcode_print_buf(char *buf, size_t buf_len, const struct osmo_ss7_instance *inst, uint32_t pc);
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const char *osmo_ss7_pointcode_print(const struct osmo_ss7_instance *inst, uint32_t pc);
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const char *osmo_ss7_pointcode_print2(const struct osmo_ss7_instance *inst, uint32_t pc);
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/* All known point-code formats have a length of or below 24 bit.
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* A point-code value exceeding that is used to indicate an unset PC. */
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#define OSMO_SS7_PC_INVALID 0xffffffff
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static inline bool osmo_ss7_pc_is_valid(uint32_t pc)
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{
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return pc <= 0x00ffffff;
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}
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/***********************************************************************
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* SS7 Routing Tables
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***********************************************************************/
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struct osmo_ss7_route_table {
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/*! member in list of routing tables */
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struct llist_head list;
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/*! \ref osmo_ss7_instance to which we belong */
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struct osmo_ss7_instance *inst;
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/*! list of \ref osmo_ss7_route */
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struct llist_head routes;
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struct {
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char *name;
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char *description;
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} cfg;
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};
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struct osmo_ss7_route_table *
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osmo_ss7_route_table_find(struct osmo_ss7_instance *inst, const char *name);
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struct osmo_ss7_route_table *
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osmo_ss7_route_table_find_or_create(struct osmo_ss7_instance *inst, const char *name);
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void osmo_ss7_route_table_destroy(struct osmo_ss7_route_table *rtbl);
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/***********************************************************************
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* SS7 Instances
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***********************************************************************/
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struct osmo_ss7_pc_fmt {
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char delimiter;
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uint8_t component_len[3];
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};
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struct osmo_ss7_instance {
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/*! member of global list of instances */
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struct llist_head list;
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/*! list of \ref osmo_ss7_linkset */
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struct llist_head linksets;
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/*! list of \ref osmo_ss7_as */
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struct llist_head as_list;
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/*! list of \ref osmo_ss7_asp */
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struct llist_head asp_list;
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/*! list of \ref osmo_ss7_route_table */
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struct llist_head rtable_list;
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/*! list of \ref osmo_xua_servers */
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struct llist_head xua_servers;
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/* array for faster lookup of user (indexed by service
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* indicator) */
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const struct osmo_ss7_user *user[16];
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struct osmo_ss7_route_table *rtable_system;
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struct osmo_sccp_instance *sccp;
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struct {
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uint32_t id;
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char *name;
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char *description;
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uint32_t primary_pc;
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/* secondary PCs */
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/* capability PCs */
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uint8_t network_indicator;
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struct osmo_ss7_pc_fmt pc_fmt;
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bool permit_dyn_rkm_alloc;
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struct llist_head sccp_address_book;
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} cfg;
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};
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struct osmo_ss7_instance *osmo_ss7_instance_find(uint32_t id);
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struct osmo_ss7_instance *
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osmo_ss7_instance_find_or_create(void *ctx, uint32_t id);
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void osmo_ss7_instance_destroy(struct osmo_ss7_instance *inst);
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int osmo_ss7_instance_set_pc_fmt(struct osmo_ss7_instance *inst,
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uint8_t c0, uint8_t c1, uint8_t c2);
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struct osmo_sccp_instance *osmo_ss7_ensure_sccp(struct osmo_ss7_instance *inst);
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uint8_t osmo_ss7_pc_width(const struct osmo_ss7_pc_fmt *pc_fmt);
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uint32_t osmo_ss7_pc_normalize(const struct osmo_ss7_pc_fmt *pc_fmt, uint32_t pc);
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/***********************************************************************
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* MTP Users (Users of MTP, such as SCCP or ISUP)
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***********************************************************************/
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struct osmo_ss7_user {
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/* pointer back to SS7 instance */
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struct osmo_ss7_instance *inst;
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/* name of the user */
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const char *name;
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/* primitive call-back for incoming MTP primitives */
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osmo_prim_cb prim_cb;
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/* private data */
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void *priv;
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};
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int osmo_ss7_user_register(struct osmo_ss7_instance *inst, uint8_t service_ind,
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struct osmo_ss7_user *user);
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int osmo_ss7_user_unregister(struct osmo_ss7_instance *inst, uint8_t service_ind,
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struct osmo_ss7_user *user);
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int osmo_ss7_mtp_to_user(struct osmo_ss7_instance *inst, struct osmo_mtp_prim *omp);
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/* SS7 User wants to issue MTP-TRANSFER.req */
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int osmo_ss7_user_mtp_xfer_req(struct osmo_ss7_instance *inst,
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struct osmo_mtp_prim *omp);
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/***********************************************************************
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* SS7 Links
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***********************************************************************/
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enum osmo_ss7_link_adm_state {
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OSMO_SS7_LS_SHUTDOWN,
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OSMO_SS7_LS_INHIBITED,
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OSMO_SS7_LS_ENABLED,
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_NUM_OSMO_SS7_LS
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};
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struct osmo_ss7_linkset;
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struct osmo_ss7_link;
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struct osmo_ss7_link {
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/*! \ref osmo_ss7_linkset to which we belong */
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struct osmo_ss7_linkset *linkset;
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struct {
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char *name;
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char *description;
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uint32_t id;
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enum osmo_ss7_link_adm_state adm_state;
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} cfg;
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};
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void osmo_ss7_link_destroy(struct osmo_ss7_link *link);
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struct osmo_ss7_link *
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osmo_ss7_link_find_or_create(struct osmo_ss7_linkset *lset, uint32_t id);
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/***********************************************************************
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* SS7 Linksets
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***********************************************************************/
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struct osmo_ss7_linkset {
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struct llist_head list;
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/*! \ref osmo_ss7_instance to which we belong */
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struct osmo_ss7_instance *inst;
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/*! array of \ref osmo_ss7_link */
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struct osmo_ss7_link *links[16];
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struct {
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char *name;
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char *description;
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uint32_t adjacent_pc;
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uint32_t local_pc;
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} cfg;
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};
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void osmo_ss7_linkset_destroy(struct osmo_ss7_linkset *lset);
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struct osmo_ss7_linkset *
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osmo_ss7_linkset_find_by_name(struct osmo_ss7_instance *inst, const char *name);
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struct osmo_ss7_linkset *
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osmo_ss7_linkset_find_or_create(struct osmo_ss7_instance *inst, const char *name, uint32_t pc);
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/***********************************************************************
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* SS7 Routes
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***********************************************************************/
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struct osmo_ss7_route {
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/*! member in \ref osmo_ss7_route_table.routes */
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struct llist_head list;
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/*! \ref osmo_ss7_route_table to which we belong */
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struct osmo_ss7_route_table *rtable;
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struct {
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/*! pointer to linkset (destination) of route */
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struct osmo_ss7_linkset *linkset;
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/*! pointer to Application Server */
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struct osmo_ss7_as *as;
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} dest;
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struct {
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/* FIXME: presence? */
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uint32_t pc;
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uint32_t mask;
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/*! human-specified linkset name */
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char *linkset_name;
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/*! lower priority is higher */
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uint32_t priority;
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uint8_t qos_class;
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} cfg;
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};
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struct osmo_ss7_route *
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osmo_ss7_route_find_dpc(struct osmo_ss7_route_table *rtbl, uint32_t dpc);
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struct osmo_ss7_route *
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osmo_ss7_route_find_dpc_mask(struct osmo_ss7_route_table *rtbl, uint32_t dpc,
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uint32_t mask);
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struct osmo_ss7_route *
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osmo_ss7_route_lookup(struct osmo_ss7_instance *inst, uint32_t dpc);
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struct osmo_ss7_route *
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osmo_ss7_route_create(struct osmo_ss7_route_table *rtbl, uint32_t dpc,
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uint32_t mask, const char *linkset_name);
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void osmo_ss7_route_destroy(struct osmo_ss7_route *rt);
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const char *osmo_ss7_route_print(const struct osmo_ss7_route *rt);
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const char *osmo_ss7_route_name(struct osmo_ss7_route *rt, bool list_asps);
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/***********************************************************************
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* SS7 Application Servers
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***********************************************************************/
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struct osmo_ss7_routing_key {
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uint32_t context;
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uint32_t l_rk_id;
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uint32_t pc;
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uint8_t si;
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uint32_t ssn;
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/* FIXME: more complex routing keys */
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};
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enum osmo_ss7_as_traffic_mode {
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OSMO_SS7_AS_TMOD_OVERRIDE = 0, /* default */
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OSMO_SS7_AS_TMOD_BCAST,
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OSMO_SS7_AS_TMOD_LOADSHARE,
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OSMO_SS7_AS_TMOD_ROUNDROBIN,
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_NUM_OSMO_SS7_ASP_TMOD
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};
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extern struct value_string osmo_ss7_as_traffic_mode_vals[];
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static inline const char *
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osmo_ss7_as_traffic_mode_name(enum osmo_ss7_as_traffic_mode mode)
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{
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return get_value_string(osmo_ss7_as_traffic_mode_vals, mode);
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}
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enum osmo_ss7_asp_protocol {
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OSMO_SS7_ASP_PROT_NONE,
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OSMO_SS7_ASP_PROT_SUA,
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OSMO_SS7_ASP_PROT_M3UA,
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OSMO_SS7_ASP_PROT_IPA,
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_NUM_OSMO_SS7_ASP_PROT
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};
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extern struct value_string osmo_ss7_asp_protocol_vals[];
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static inline const char *
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osmo_ss7_asp_protocol_name(enum osmo_ss7_asp_protocol mode)
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{
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return get_value_string(osmo_ss7_asp_protocol_vals, mode);
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}
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int osmo_ss7_asp_protocol_port(enum osmo_ss7_asp_protocol prot);
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enum osmo_ss7_as_patch_sccp_mode {
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OSMO_SS7_PATCH_NONE, /* no patching of SCCP */
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OSMO_SS7_PATCH_BOTH, /* patch both OPC and DPC into SCCP addresses */
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};
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struct osmo_ss7_as {
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/*! entry in 'ref osmo_ss7_instance.as_list */
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struct llist_head list;
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struct osmo_ss7_instance *inst;
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/*! AS FSM */
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struct osmo_fsm_inst *fi;
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/*! Were we dynamically allocated by RKM? */
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bool rkm_dyn_allocated;
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/*! Were we allocated by "simple client" support? */
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bool simple_client_allocated;
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/*! Rate Counter Group */
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struct rate_ctr_group *ctrg;
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struct {
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char *name;
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char *description;
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enum osmo_ss7_asp_protocol proto;
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struct osmo_ss7_routing_key routing_key;
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enum osmo_ss7_as_traffic_mode mode;
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/* traffic mode was configured by VTY / config file */
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bool mode_set_by_vty;
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/* traffic mode was configured by RKM (routing key management) or first ASPAC */
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bool mode_set_by_peer;
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uint32_t recovery_timeout_msec;
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uint8_t qos_class;
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struct {
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uint32_t dpc;
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enum osmo_ss7_as_patch_sccp_mode sccp_mode;
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} pc_override;
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struct osmo_ss7_asp *asps[16];
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uint8_t last_asp_idx_sent; /* used for load-sharing traffic mode (round robin implementation) */
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} cfg;
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};
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struct osmo_ss7_as *
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osmo_ss7_as_find_by_name(struct osmo_ss7_instance *inst, const char *name);
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struct osmo_ss7_as *
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osmo_ss7_as_find_by_rctx(struct osmo_ss7_instance *inst, uint32_t rctx);
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struct osmo_ss7_as *
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osmo_ss7_as_find_by_l_rk_id(struct osmo_ss7_instance *inst, uint32_t l_rk_id);
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struct osmo_ss7_as *osmo_ss7_as_find_by_proto(struct osmo_ss7_instance *inst,
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enum osmo_ss7_asp_protocol proto);
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struct osmo_ss7_as *
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osmo_ss7_as_find_or_create(struct osmo_ss7_instance *inst, const char *name,
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enum osmo_ss7_asp_protocol proto);
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int osmo_ss7_as_add_asp(struct osmo_ss7_as *as, const char *asp_name);
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int osmo_ss7_as_del_asp(struct osmo_ss7_as *as, const char *asp_name);
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void osmo_ss7_as_destroy(struct osmo_ss7_as *as);
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bool osmo_ss7_as_has_asp(const struct osmo_ss7_as *as,
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const struct osmo_ss7_asp *asp);
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bool osmo_ss7_as_active(const struct osmo_ss7_as *as);
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bool osmo_ss7_as_tmode_compatible_xua(struct osmo_ss7_as *as, uint32_t m3ua_tmt);
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void osmo_ss7_asp_disconnect(struct osmo_ss7_asp *asp);
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/***********************************************************************
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* SS7 Application Server Processes
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***********************************************************************/
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struct osmo_ss7_asp_peer {
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char *host[OSMO_SOCK_MAX_ADDRS];
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size_t host_cnt;
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uint16_t port;
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};
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enum osmo_ss7_asp_admin_state {
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/*! no SCTP association with peer */
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OSMO_SS7_ASP_ADM_S_SHUTDOWN,
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/*! SCP association, but reject ASP-ACTIVE */
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OSMO_SS7_ASP_ADM_S_BLOCKED,
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/*! in normal operation */
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OSMO_SS7_ASP_ADM_S_ENABLED,
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};
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enum osmo_ss7_asp_role {
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OSMO_SS7_ASP_ROLE_ASP,
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OSMO_SS7_ASP_ROLE_SG,
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OSMO_SS7_ASP_ROLE_IPSP,
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};
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extern const struct value_string osmo_ss7_asp_role_names[];
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struct osmo_ss7_asp {
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/*! entry in \ref osmo_ss7_instance.asp_list */
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struct llist_head list;
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struct osmo_ss7_instance *inst;
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/*! ASP FSM */
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struct osmo_fsm_inst *fi;
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/*! \ref osmo_xua_server over which we were established */
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struct osmo_xua_server *xua_server;
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struct llist_head siblings;
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/*! osmo_stream / libosmo-netif handles */
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struct osmo_stream_cli *client;
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struct osmo_stream_srv *server;
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/*! pre-formatted human readable local/remote socket name */
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char *sock_name;
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/* ASP Identifier for ASP-UP + NTFY */
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uint32_t asp_id;
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bool asp_id_present;
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/* Layer Manager to which we talk */
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const struct osmo_xua_layer_manager *lm;
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void *lm_priv;
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/*! Were we dynamically allocated */
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bool dyn_allocated;
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/*! Were we allocated by "simple client" support? */
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bool simple_client_allocated;
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/*! Rate Counter Group */
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struct rate_ctr_group *ctrg;
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/*! Pending message for non-blocking IPA read */
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struct msgb *pending_msg;
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struct {
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char *name;
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char *description;
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enum osmo_ss7_asp_protocol proto;
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enum osmo_ss7_asp_admin_state adm_state;
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bool is_server;
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enum osmo_ss7_asp_role role;
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bool role_set_by_vty;
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struct osmo_ss7_asp_peer local;
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struct osmo_ss7_asp_peer remote;
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uint8_t qos_class;
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uint32_t quirks;
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} cfg;
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};
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/*! Peer SG doesn't send NTFY(AS-INACTIVE) after ASP-UP procedure */
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#define OSMO_SS7_ASP_QUIRK_NO_NOTIFY 0x00000001
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/*! Accept DAUD in ASP role (RFC states only permitted in ASP->SG role) */
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#define OSMO_SS7_ASP_QUIRK_DAUD_IN_ASP 0x00000002
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/*! Accept SSNM even if ASP is in AS-INACTIVE state */
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#define OSMO_SS7_ASP_QUIRK_SNM_INACTIVE 0x00000004
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int osmo_ss7_asp_peer_snprintf(char* buf, size_t buf_len, struct osmo_ss7_asp_peer *peer);
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int osmo_ss7_asp_peer_set_hosts(struct osmo_ss7_asp_peer *peer, void *talloc_ctx,
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const char* const* hosts, size_t host_cnt);
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int osmo_ss7_asp_peer_add_host(struct osmo_ss7_asp_peer *peer, void *talloc_ctx, const char *host);
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struct osmo_ss7_asp *
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osmo_ss7_asp_find_by_name(struct osmo_ss7_instance *inst, const char *name);
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struct osmo_ss7_asp
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*osmo_ss7_asp_find_by_proto(struct osmo_ss7_as *as,
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enum osmo_ss7_asp_protocol proto);
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struct osmo_ss7_asp *
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osmo_ss7_asp_find(struct osmo_ss7_instance *inst, const char *name,
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uint16_t remote_port, uint16_t local_port,
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enum osmo_ss7_asp_protocol proto);
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struct osmo_ss7_asp *
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osmo_ss7_asp_find_or_create(struct osmo_ss7_instance *inst, const char *name,
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uint16_t remote_port, uint16_t local_port,
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enum osmo_ss7_asp_protocol proto);
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void osmo_ss7_asp_destroy(struct osmo_ss7_asp *asp);
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int osmo_ss7_asp_send(struct osmo_ss7_asp *asp, struct msgb *msg);
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int osmo_ss7_asp_restart(struct osmo_ss7_asp *asp);
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int osmo_ss7_asp_use_default_lm(struct osmo_ss7_asp *asp, int log_level);
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bool osmo_ss7_asp_active(const struct osmo_ss7_asp *asp);
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int osmo_ss7_asp_get_log_subsys(const struct osmo_ss7_asp *asp);
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|
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/*! Weak function to handle payload for unknown/unsupported PPID or IPA StreamID.
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* This function can be overridden by application code to implement whatever handling
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* it wants for such additional payloads/streams.
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* \param[in] asp Application Server Process through which data was received
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* \param[in] ppid_sid SCTP PPID (in sigtran case) or IPA Stream ID
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* \param[in] msg Message buffer containing received data. Continues to be owned by caller!
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* \return 0 on success; negative on error */
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typedef int osmo_ss7_asp_rx_unknown_cb(struct osmo_ss7_asp *asp, int ppid_mux, struct msgb *msg);
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|
|
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void osmo_ss7_register_rx_unknown_cb(osmo_ss7_asp_rx_unknown_cb *cb);
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|
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#define _LOGSS7(inst, subsys, level, fmt, args ...) \
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LOGP(subsys, level, "%u: " fmt, inst ? (inst)->cfg.id : 0, ## args)
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#define LOGSS7(inst, level, fmt, args ...) _LOGSS7(inst, DLSS7, level, fmt, ## args)
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|
|
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#define LOGPASP(asp, subsys, level, fmt, args ...) \
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_LOGSS7((asp)->inst, subsys, level, "asp-%s: " fmt, (asp)->cfg.name, ## args)
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|
#define LOGPAS(as, subsys, level, fmt, args ...) \
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_LOGSS7((as)->inst, subsys, level, "as-%s: " fmt, (as)->cfg.name, ## args)
|
|
|
|
/***********************************************************************
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|
* xUA Servers
|
|
***********************************************************************/
|
|
|
|
struct osmo_xua_layer_manager {
|
|
osmo_prim_cb prim_cb;
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|
};
|
|
|
|
struct osmo_xua_server {
|
|
struct llist_head list;
|
|
struct osmo_ss7_instance *inst;
|
|
|
|
/* list of ASPs established via this server */
|
|
struct llist_head asp_list;
|
|
|
|
struct osmo_stream_srv_link *server;
|
|
|
|
struct {
|
|
bool accept_dyn_reg;
|
|
struct osmo_ss7_asp_peer local;
|
|
enum osmo_ss7_asp_protocol proto;
|
|
} cfg;
|
|
};
|
|
|
|
struct osmo_xua_server *
|
|
osmo_ss7_xua_server_find(struct osmo_ss7_instance *inst, enum osmo_ss7_asp_protocol proto,
|
|
uint16_t local_port);
|
|
|
|
struct osmo_xua_server *
|
|
osmo_ss7_xua_server_create(struct osmo_ss7_instance *inst, enum osmo_ss7_asp_protocol proto,
|
|
uint16_t local_port, const char *local_host);
|
|
|
|
int
|
|
osmo_ss7_xua_server_bind(struct osmo_xua_server *xs);
|
|
|
|
int
|
|
osmo_ss7_xua_server_set_local_host(struct osmo_xua_server *xs, const char *local_host);
|
|
int
|
|
osmo_ss7_xua_server_set_local_hosts(struct osmo_xua_server *xs, const char **local_hosts, size_t local_host_cnt);
|
|
int osmo_ss7_xua_server_add_local_host(struct osmo_xua_server *xs, const char *local_host);
|
|
void osmo_ss7_xua_server_destroy(struct osmo_xua_server *xs);
|
|
|
|
struct osmo_sccp_instance *
|
|
osmo_sccp_simple_client(void *ctx, const char *name, uint32_t default_pc,
|
|
enum osmo_ss7_asp_protocol prot, int default_local_port,
|
|
const char *default_local_ip, int default_remote_port,
|
|
const char *default_remote_ip);
|
|
|
|
struct osmo_sccp_instance *
|
|
osmo_sccp_simple_client_on_ss7_id(void *ctx, uint32_t ss7_id, const char *name,
|
|
uint32_t default_pc,
|
|
enum osmo_ss7_asp_protocol prot,
|
|
int default_local_port,
|
|
const char *default_local_ip,
|
|
int default_remote_port,
|
|
const char *default_remote_ip);
|
|
|
|
struct osmo_sccp_instance *
|
|
osmo_sccp_simple_server(void *ctx, uint32_t pc,
|
|
enum osmo_ss7_asp_protocol prot, int local_port,
|
|
const char *local_ip);
|
|
|
|
struct osmo_sccp_instance *
|
|
osmo_sccp_simple_server_on_ss7_id(void *ctx, uint32_t ss7_id, uint32_t pc,
|
|
enum osmo_ss7_asp_protocol prot,
|
|
int local_port, const char *local_ip);
|
|
|
|
struct osmo_sccp_instance *
|
|
osmo_sccp_simple_server_add_clnt(struct osmo_sccp_instance *inst,
|
|
enum osmo_ss7_asp_protocol prot,
|
|
const char *name, uint32_t pc,
|
|
int local_port, int remote_port,
|
|
const char *remote_ip);
|
|
|
|
enum osmo_ss7_as_traffic_mode osmo_ss7_tmode_from_xua(uint32_t in);
|
|
int osmo_ss7_tmode_to_xua(enum osmo_ss7_as_traffic_mode tmod);
|
|
|
|
/* VTY related */
|
|
struct vty;
|
|
void osmo_ss7_vty_init_asp(void *ctx);
|
|
void osmo_ss7_vty_init_sg(void *ctx);
|
|
int osmo_ss7_vty_go_parent(struct vty *vty);
|
|
int osmo_ss7_is_config_node(struct vty *vty, int node);
|