5 #include <osmocom/core/timer.h>
6 #include <osmocom/core/msgb.h>
7 #include <osmocom/gsm/prim.h>
30 #define MDL_CAUSE_T200_EXPIRED 0x01
31 #define MDL_CAUSE_REEST_REQ 0x02
32 #define MDL_CAUSE_UNSOL_UA_RESP 0x03
33 #define MDL_CAUSE_UNSOL_DM_RESP 0x04
34 #define MDL_CAUSE_UNSOL_DM_RESP_MF 0x05
35 #define MDL_CAUSE_UNSOL_SPRV_RESP 0x06
36 #define MDL_CAUSE_SEQ_ERR 0x07
37 #define MDL_CAUSE_UFRM_INC_PARAM 0x08
38 #define MDL_CAUSE_SFRM_INC_PARAM 0x09
39 #define MDL_CAUSE_IFRM_INC_MBITS 0x0a
40 #define MDL_CAUSE_IFRM_INC_LEN 0x0b
41 #define MDL_CAUSE_FRM_UNIMPL 0x0c
42 #define MDL_CAUSE_SABM_MF 0x0d
43 #define MDL_CAUSE_SABM_INFO_NOTALL 0x0e
44 #define MDL_CAUSE_FRMR 0x0f
58 struct osmo_prim_hdr
oph;
75 LAPD_STATE_ASS_TEI_WAIT,
76 LAPD_STATE_EST_TEI_WAIT,
81 LAPD_STATE_TIMER_RECOV,
163 void lapd_dl_init(
struct lapd_datalink *dl, uint8_t k, uint8_t v_range,
168 int lapd_ph_data_ind(
struct msgb *msg,
struct lapd_msg_ctx *lctx);
uint8_t v_recv
seq nr of next I frame expected to be received
Definition: lapd_core.h:143
primitive header for LAPD DL-SAP primitives
Definition: lapd_core.h:57
int n200_est_rel
number of retranmissions
Definition: lapd_core.h:136
struct osmo_timer_list t200
T200 timer.
Definition: lapd_core.h:150
struct msgb * send_buffer
current frame transmitting
Definition: lapd_core.h:155
DL-RESUME.
Definition: lapd_core.h:24
MDL-ERROR.
Definition: lapd_core.h:26
lapd_mode
LAPD mode/role.
Definition: lapd_core.h:66
int t200_usec
retry timer (default 1 sec)
Definition: lapd_core.h:148
DL-ESTABLISH.
Definition: lapd_core.h:21
struct llist_head send_queue
frames from L3
Definition: lapd_core.h:154
DL-UNIT-DATA.
Definition: lapd_core.h:19
for DL-REL.req
Definition: lapd_core.h:52
int seq_err_cond
condition of sequence error
Definition: lapd_core.h:145
struct llist_head tx_queue
frames to L1
Definition: lapd_core.h:153
struct lapd_history * tx_hist
tx history structure array
Definition: lapd_core.h:157
uint8_t own_busy
receiver busy on our side
Definition: lapd_core.h:146
uint8_t k
maximum number of unacknowledged frames
Definition: lapd_core.h:139
int maxf
maximum frame size (after defragmentation)
Definition: lapd_core.h:138
DL-RECONNECT.
Definition: lapd_core.h:25
Definition: lapd_core.h:117
for MDL-ERROR.ind
Definition: lapd_core.h:47
struct lapd_cr_ent loc2rem
filled-in once we set the lapd_mode above
Definition: lapd_core.h:130
struct osmo_prim_hdr oph
generic primitive header
Definition: lapd_core.h:58
struct osmo_timer_list t203
T203 timer.
Definition: lapd_core.h:151
uint8_t mode
release mode
Definition: lapd_core.h:53
struct msgb * cont_res
buffer to store content resolution data on network side, to detect multiple phones on same channel ...
Definition: lapd_core.h:160
uint8_t range_hist
range of history buffer 2..2^n
Definition: lapd_core.h:158
LAPD datalink.
Definition: lapd_core.h:123
osmo_dl_prim
LAPD related primitives (L2<->L3 SAP)
Definition: lapd_core.h:18
LAPD message context.
Definition: lapd_core.h:93
DL-RLEEASE.
Definition: lapd_core.h:22
uint8_t peer_busy
receiver busy on remote side
Definition: lapd_core.h:147
Definition: lapd_core.h:112
behave like network
Definition: lapd_core.h:68
int lapd_set_mode(struct lapd_datalink *dl, enum lapd_mode mode)
Set the lapdm_mode of a LAPDm entity.
Definition: lapd_core.c:328
behave like user
Definition: lapd_core.h:67
uint32_t state
LAPD state (lapd_state)
Definition: lapd_core.h:144
DL-DATA.
Definition: lapd_core.h:20
uint8_t retrans_ctr
re-transmission counter
Definition: lapd_core.h:152
int send_out
how much was sent from send_buffer
Definition: lapd_core.h:156
int t203_usec
retry timer (default 10 secs)
Definition: lapd_core.h:149
enum lapd_mode mode
current mode of link
Definition: lapd_core.h:133
uint8_t v_ack
last frame ACKed by peer
Definition: lapd_core.h:142
uint8_t v_send
seq nr of next I frame to be transmitted
Definition: lapd_core.h:141
int reestablish
enable reestablish support
Definition: lapd_core.h:135
uint8_t cause
generic cause value
Definition: lapd_core.h:48
int use_sabme
use SABME instead of SABM
Definition: lapd_core.h:134
struct msgb * rcv_buffer
buffer to assemble the received message
Definition: lapd_core.h:159
lapd_format
LAPD message format (I / S / U)
Definition: lapd_core.h:85
lapd_state
LAPD state (Figure B.2/Q.921)
Definition: lapd_core.h:72
struct lapd_msg_ctx lctx
LAPD context.
Definition: lapd_core.h:137
uint8_t length
Length in octets.
Definition: gsm_12_21.h:115
union osmo_dlsap_prim::@2 u
request-specific data
DL-SUSPEND.
Definition: lapd_core.h:23
uint8_t v_range
range of sequence numbers
Definition: lapd_core.h:140