1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
#ifndef _GPRS_SGSN_H
#define _GPRS_SGSN_H
#include <stdint.h>
#include <netinet/in.h>
#include <osmocore/gsm48.h>
#define GSM_IMSI_LENGTH 17
#define GSM_IMEI_LENGTH 17
#define GSM_EXTENSION_LENGTH 15
/* TS 04.08 4.1.3.3 GMM mobility management states on the network side */
enum gprs_mm_state {
GMM_DEREGISTERED, /* 4.1.3.3.1.1 */
GMM_COMMON_PROC_INIT, /* 4.1.3.3.1.2 */
GMM_REGISTERED_NORMAL, /* 4.1.3.3.2.1 */
GMM_REGISTERED_SUSPENDED, /* 4.1.3.3.2.2 */
GMM_DEREGISTERED_INIT, /* 4.1.3.3.1.4 */
};
enum gprs_ciph_algo {
GPRS_ALGO_GEA0,
GPRS_ALGO_GEA1,
GPRS_ALGO_GEA2,
};
enum grs_mm_ctr {
GMM_CTR_PKTS_SIG_IN,
GMM_CTR_PKTS_SIG_OUT,
GMM_CTR_PKTS_UDATA_IN,
GMM_CTR_PKTS_UDATA_OUT,
GMM_CTR_BYTES_UDATA_IN,
GMM_CTR_BYTES_UDATA_OUT,
GMM_CTR_PDP_CTX_ACT,
GMM_CTR_SUSPEND,
GMM_CTR_PAGING_PS,
GMM_CTR_PAGING_CS,
GMM_CTR_RA_UPDATE,
};
#define MS_RADIO_ACCESS_CAPA
/* According to TS 03.60, Table 5: SGSN MM and PDP Contexts */
/* Extended by 3GPP TS 23.060, Table 6: SGSN MM and PDP Contexts */
struct sgsn_mm_ctx {
struct llist_head list;
char imsi[GSM_IMSI_LENGTH];
enum gprs_mm_state mm_state;
uint32_t p_tmsi;
uint32_t p_tmsi_sig;
char imei[GSM_IMEI_LENGTH];
/* Opt: Software Version Numbber / TS 23.195 */
char msisdn[GSM_EXTENSION_LENGTH];
struct gprs_ra_id ra;
uint16_t cell_id;
uint32_t cell_id_age;
uint16_t sac; /* Iu: Service Area Code */
uint32_t sac_age;/* Iu: Service Area Code age */
/* VLR number */
uint32_t new_sgsn_addr;
/* Authentication Triplets */
/* Kc */
/* Iu: CK, IK, KSI */
/* CKSN */
enum gprs_ciph_algo ciph_algo;
struct {
uint8_t buf[14]; /* 10.5.5.12a */
uint8_t len;
} ms_radio_access_capa;
struct {
uint8_t buf[4]; /* 10.5.5.12 */
uint8_t len;
} ms_network_capa;
uint16_t drx_parms;
int mnrg; /* MS reported to HLR? */
int ngaf; /* MS reported to MSC/VLR? */
int ppf; /* paging for GPRS + non-GPRS? */
/* SMS Parameters */
int recovery;
uint8_t radio_prio_sms;
struct llist_head pdp_list;
/* Additional bits not present in the GSM TS */
uint32_t tlli;
uint16_t nsei;
uint16_t bvci;
struct rate_ctr_group *ctrg;
struct timer_list timer;
unsigned int T;
};
/* look-up a SGSN MM context based on TLLI + RAI */
struct sgsn_mm_ctx *sgsn_mm_ctx_by_tlli(uint32_t tlli,
const struct gprs_ra_id *raid);
struct sgsn_mm_ctx *sgsn_mm_ctx_by_ptmsi(uint32_t tmsi);
struct sgsn_mm_ctx *sgsn_mm_ctx_by_imsi(const char *imsi);
/* Allocate a new SGSN MM context */
struct sgsn_mm_ctx *sgsn_mm_ctx_alloc(uint32_t tlli,
const struct gprs_ra_id *raid);
enum pdp_ctx_state {
PDP_STATE_NONE,
PDP_STATE_CR_REQ,
PDP_STATE_CR_CONF,
};
enum pdp_type {
PDP_TYPE_NONE,
PDP_TYPE_ETSI_PPP,
PDP_TYPE_IANA_IPv4,
PDP_TYPE_IANA_IPv6,
};
struct sgsn_pdp_ctx {
struct llist_head list; /* list_head for mmctx->pdp_list */
struct llist_head g_list; /* list_head for global list */
struct sgsn_mm_ctx *mm; /* back pointer to MM CTX */
struct sgsn_ggsn_ctx *ggsn; /* which GGSN serves this PDP */
//unsigned int id;
struct pdp_t *lib; /* pointer to libgtp PDP ctx */
enum pdp_ctx_state state;
enum pdp_type type;
uint32_t address;
char *apn_subscribed;
//char *apn_used;
uint16_t nsapi; /* SNDCP */
uint16_t sapi; /* LLC */
uint8_t ti; /* transaction identifier */
int vplmn_allowed;
uint32_t qos_profile_subscr;
//uint32_t qos_profile_req;
//uint32_t qos_profile_neg;
uint8_t radio_prio;
uint32_t tx_npdu_nr;
uint32_t rx_npdu_nr;
uint32_t tx_gtp_snd;
uint32_t rx_gtp_snu;
//uint32_t charging_id;
int reordering_reqd;
};
struct sgsn_pdp_ctx *sgsn_pdp_ctx_by_nsapi(const struct sgsn_mm_ctx *mm,
uint8_t nsapi);
struct sgsn_pdp_ctx *sgsn_pdp_ctx_by_tid(const struct sgsn_mm_ctx *mm,
uint8_t tid);
struct sgsn_pdp_ctx *sgsn_pdp_ctx_alloc(struct sgsn_mm_ctx *mm,
uint8_t nsapi);
void sgsn_pdp_ctx_free(struct sgsn_pdp_ctx *pdp);
struct sgsn_ggsn_ctx {
struct llist_head list;
uint32_t id;
unsigned int gtp_version;
struct in_addr remote_addr;
struct gsn_t *gsn;
};
struct ggsn_ctx *ggsn_ctx_alloc(uint32_t id);
struct ggsn_ctx *ggsn_ctx_by_id(uint32_t id);
struct ggsn_ctx *ggsn_ctx_find_alloc(uint32_t id);
struct apn_ctx {
struct llist_head list;
struct sgsn_ggsn_ctx *ggsn;
char *name;
char *description;
};
extern struct llist_head sgsn_mm_ctxts;
extern struct llist_head sgsn_ggsn_ctxts;
extern struct llist_head sgsn_apn_ctxts;
extern struct llist_head sgsn_pdp_ctxts;
#endif /* _GPRS_SGSN_H */
|
