208 lines
9.7 KiB
C
208 lines
9.7 KiB
C
/*
|
|
* OpenGGSN - Gateway GPRS Support Node
|
|
* Copyright (C) 2002, 2003 Mondru AB.
|
|
*
|
|
* The contents of this file may be used under the terms of the GNU
|
|
* General Public License Version 2, provided that the above copyright
|
|
* notice and this permission notice is included in all copies or
|
|
* substantial portions of the software.
|
|
*
|
|
* The initial developer of the original code is
|
|
* Jens Jakobsen <jj@openggsn.org>
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
*/
|
|
|
|
#ifndef _PDP_H
|
|
#define _PDP_H
|
|
|
|
#define PDP_MAX 1024 /* Max number of PDP contexts */
|
|
|
|
#define PDP_DEBUG 0 /* Print debug information */
|
|
|
|
/* GTP Information elements from 29.060 v3.9.0 7.7 Information Elements */
|
|
/* Also covers version 0. Note that version 0 6: QOS Profile was superceded *
|
|
* by 135: QOS Profile in version 1 */
|
|
|
|
|
|
struct sl_t {
|
|
int l;
|
|
char *v;
|
|
};
|
|
|
|
struct ul_t {
|
|
int l;
|
|
unsigned char *v;
|
|
};
|
|
|
|
struct ul16_t {
|
|
int l;
|
|
unsigned char v[16];
|
|
};
|
|
|
|
struct ul66_t {
|
|
int l;
|
|
unsigned char v[66];
|
|
};
|
|
|
|
struct ul255_t {
|
|
int l;
|
|
unsigned char v[255];
|
|
};
|
|
|
|
|
|
/* ***********************************************************
|
|
* Information storage for each PDP context
|
|
*
|
|
* Information storage for each PDP context is defined in
|
|
* 23.060 section 13.3 and 03.60. Includes IMSI, MSISDN, APN,
|
|
* PDP-type, PDP-address (IP address), sequence numbers, charging ID.
|
|
* For the SGSN it also includes radio related mobility
|
|
* information.
|
|
* The following structure is a combination of the storage
|
|
* requirements for each PDP context for the GGSN and SGSN.
|
|
* It contains both 23.060 as well as 03.60 parameters.
|
|
* Information is stored in the format for information elements
|
|
* described in 29.060 and 09.60.
|
|
* 31 * 4 + 15 structs + = 120 + 15 structs ~ 2k / context
|
|
* Structs: IP address 16+4 bytes (6), APN 255 bytes (2)
|
|
* QOS: 255 bytes (3), msisdn 16 bytes (1),
|
|
*
|
|
* TODO: We need to consider who manages the pdp_t hash tables
|
|
* Is it gtp_lib, or is it the application?
|
|
* I suppose that it will be gtp_lib.
|
|
* SGSN will ask gtplib for new pdp_t. Fill out the fields,
|
|
* and pass it on to gtp_create_pdp_req.
|
|
* GGSN will receive gtp_create_pdp_ind, create new pdp_t and
|
|
* send responce to SGSN.
|
|
* SGSN will receive response and gtplib will find the
|
|
* original pdp_t corresponding to the request. This will be
|
|
* passed on to the application.
|
|
* Eventually the SGSN will close the connection, and the
|
|
* pdp_t will be freed by gtplib in SGSN and GGSN
|
|
* This means that gtplib need to have functions to
|
|
* allocate, free, sort and find pdp_t
|
|
* (newpdp, freepdp, getpdp)
|
|
* Hash tables: TID, IMSI, IP etc.)
|
|
*************************************************************/
|
|
|
|
struct pdp_t {
|
|
/* Parameter determining if this PDP is in use. */
|
|
uint8_t inuse; /* 0=free. 1=used by somebody */
|
|
|
|
/* Pointers related to hash tables */
|
|
struct pdp_t *tidnext;
|
|
struct pdp_t *ipnext;
|
|
|
|
/* Parameters shared by all PDP context belonging to the same MS */
|
|
|
|
void *ipif; /* IP network interface */
|
|
void *peer; /* Pointer to peer protocol */
|
|
void *asap; /* Application specific service access point */
|
|
|
|
uint64_t imsi; /* International Mobile Subscriber Identity.*/
|
|
struct ul16_t msisdn; /* The basic MSISDN of the MS. */
|
|
uint8_t mnrg; /* Indicates whether the MS is marked as not reachable for PS at the HLR. (1 bit, not transmitted) */
|
|
uint8_t cch_sub; /* The charging characteristics for the MS, e.g. normal, prepaid, flat-rate, and/or hot billing subscription. (not transmitted) */
|
|
uint16_t traceref; /* Identifies a record or a collection of records for a particular trace. */
|
|
uint16_t tracetype;/* Indicates the type of trace. */
|
|
struct ul_t triggerid;/* Identifies the entity that initiated the trace. */
|
|
struct ul_t omcid; /* Identifies the OMC that shall receive the trace record(s). */
|
|
uint8_t rec_hlr; /* Indicates if HLR or VLR is performing database recovery. (1 bit, not transmitted) */
|
|
|
|
/* Parameters specific to each individual PDP context */
|
|
|
|
uint8_t pdp_id; /* Index of the PDP context. (PDP context identifier) */
|
|
uint8_t pdp_state;/* PDP State Packet data protocol state, INACTIVE or ACTIVE. (1 bit, not transmitted) */
|
|
/* struct ul_t pdp_type; * PDP type; e.g. PPP or IP. */
|
|
/* struct ul_t pdp_addr; * PDP address; e.g. an IP address. */
|
|
struct ul66_t eua; /* End user address. PDP type and address combined */
|
|
uint8_t pdp_dyn; /* Indicates whether PDP Address is static or dynamic. (1 bit, not transmitted) */
|
|
struct ul255_t apn_req;/* The APN requested. */
|
|
struct ul255_t apn_sub;/* The APN received from the HLR. */
|
|
struct ul255_t apn_use;/* The APN Network Identifier currently used. */
|
|
uint8_t nsapi; /* Network layer Service Access Point Identifier. (4 bit) */
|
|
uint16_t ti; /* Transaction Identifier. (4 or 12 bit) */
|
|
|
|
uint32_t teic_own; /* (Own Tunnel Endpoint Identifier Control) */
|
|
uint32_t teid_own; /* (Own Tunnel Endpoint Identifier Data I) */
|
|
uint32_t teic_gn; /* Tunnel Endpoint Identifier for the Gn and Gp interfaces. (Control plane) */
|
|
uint32_t teid_gn; /* Tunnel Endpoint Identifier for the Gn and Gp interfaces. (Data I) */
|
|
uint32_t tei_iu; /* Tunnel Endpoint Identifier for the Iu interface. */
|
|
|
|
uint16_t fllc; /* (Local Flow Label Control, gtp0) */
|
|
uint16_t fllu; /* (Local Flow Label Data I, gtp0) */
|
|
uint16_t flrc; /* (Remote gn/gp Flow Label Control, gtp0) */
|
|
uint16_t flru; /* (Remote gn/gp Flow Label Data I, gtp0) */
|
|
|
|
struct ul_t tft; /* Traffic flow template. */
|
|
/*struct ul16_t sgsnc; * The IP address of the SGSN currently serving this MS. (Control plane) */
|
|
/*struct ul16_t sgsnu; * The IP address of the SGSN currently serving this MS. (User plane) */
|
|
/*struct ul16_t ggsnc; * The IP address of the GGSN currently used. (Control plane) */
|
|
/*struct ul16_t ggsnu; * The IP address of the GGSN currently used. (User plane) */
|
|
|
|
struct ul16_t gsnlc; /* The IP address of the local GSN. (Control plane) */
|
|
struct ul16_t gsnlu; /* The IP address of the local GSN. (User plane) */
|
|
struct ul16_t gsnrc; /* The IP address of the remote GSN. (Control plane) */
|
|
struct ul16_t gsnru; /* The IP address of the remote GSN. (User plane) */
|
|
|
|
uint8_t vplmn_allow; /* Specifies whether the MS is allowed to use the APN in the domain of the HPLMN only, or additionally the APN in the domain of the VPLMN. (1 bit) */
|
|
uint8_t qos_sub0[3]; /* The quality of service profile subscribed. */
|
|
uint8_t qos_req0[3]; /* The quality of service profile requested. */
|
|
uint8_t qos_neg0[3]; /* The quality of service profile negotiated. */
|
|
struct ul255_t qos_sub; /* The quality of service profile subscribed. */
|
|
struct ul255_t qos_req; /* The quality of service profile requested. */
|
|
struct ul255_t qos_neg; /* The quality of service profile negotiated. */
|
|
uint8_t radio_pri;/* The RLC/MAC radio priority level for uplink user data transmission. (4 bit) */
|
|
uint16_t flow_id; /* Packet flow identifier. */
|
|
/* struct ul_t bssqos_neg; * The aggregate BSS quality of service profile negotiated for the packet flow that this PDP context belongs to. (NOT GTP)*/
|
|
uint8_t sndcpd; /* SNDCP sequence number of the next downlink N-PDU to be sent to the MS. */
|
|
uint8_t sndcpu; /* SNDCP sequence number of the next uplink N-PDU expected from the MS. */
|
|
uint8_t rec_sgsn; /* Indicates if the SGSN is performing database recovery. (1 bit, not transmitted) */
|
|
/* uint16_t gtpsnd; GTP-U sequence number of the next downlink N-PDU to be sent to the SGSN / received from the GGSN. */
|
|
/* uint16_t gtpsnu; GTP-U sequence number of the next uplink N-PDU to be received from the SGSN / sent to the GGSN */
|
|
uint16_t gtpsntx; /* GTP-U sequence number of the next downlink N-PDU to be sent (09.60 section 8.1.1.1) */
|
|
uint16_t gtpsnrx; /* GTP-U sequence number of the next uplink N-PDU to be received (09.60 section 8.1.1.1) */
|
|
uint8_t pdcpsndd; /* Sequence number of the next downlink in-sequence PDCP-PDU to be sent to the MS. */
|
|
uint8_t pdcpsndu; /* Sequence number of the next uplink in-sequence PDCP-PDU expected from the MS. */
|
|
uint32_t cid; /* Charging identifier, identifies charging records generated by SGSN and GGSN. */
|
|
uint16_t cch_pdp; /* The charging characteristics for this PDP context, e.g. normal, prepaid, flat-rate, and/or hot billing. */
|
|
struct ul16_t rnc_addr;/* The IP address of the RNC currently used. */
|
|
uint8_t reorder; /* Specifies whether the GGSN shall reorder N-PDUs received from the SGSN / Specifies whether the SGSN shall reorder N-PDUs before delivering the N-PSUs to the MS. (1 bit) */
|
|
struct ul255_t pco_req; /* Requested packet control options. */
|
|
struct ul255_t pco_neg; /* Negotiated packet control options. */
|
|
uint32_t selmode; /* Selection mode. */
|
|
uint64_t tid; /* (Combination of imsi and nsapi) */
|
|
};
|
|
|
|
|
|
/* functions related to pdp_t management */
|
|
int pdp_init();
|
|
int pdp_newpdp(struct pdp_t **pdp, uint64_t imsi, uint8_t nsapi,
|
|
struct pdp_t *pdp_old);
|
|
int pdp_freepdp(struct pdp_t *pdp);
|
|
int pdp_getpdp(struct pdp_t **pdp);
|
|
|
|
int pdp_getgtp0(struct pdp_t **pdp, uint16_t fl);
|
|
int pdp_getgtp1(struct pdp_t **pdp, uint32_t teid);
|
|
|
|
int pdp_tidhash(uint64_t tid);
|
|
int pdp_tidset(struct pdp_t *pdp, uint64_t tid);
|
|
int pdp_tiddel(struct pdp_t *pdp);
|
|
int pdp_tidget(struct pdp_t **pdp, uint64_t tid);
|
|
|
|
/*
|
|
int pdp_iphash(void* ipif, struct ul66_t *eua);
|
|
int pdp_ipset(struct pdp_t *pdp, void* ipif, struct ul66_t *eua);
|
|
int pdp_ipdel(struct pdp_t *pdp);
|
|
int pdp_ipget(struct pdp_t **pdp, void* ipif, struct ul66_t *eua);
|
|
*/
|
|
|
|
int pdp_ntoeua(struct in_addr *src, struct ul66_t *eua);
|
|
int pdp_euaton(struct ul66_t *eua, struct in_addr *dst);
|
|
uint64_t pdp_gettid(uint64_t imsi, uint8_t nsapi);
|
|
int ulcpy(void* dst, void* src, size_t size);
|
|
|
|
#endif /* !_PDP_H */
|