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comparison src/g23m-gprs/llc/llc_irxp.c @ 1:fa8dc04885d8

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src/g23m-*: import from Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 16 Oct 2020 06:25:50 +0000
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0:4e78acac3d88 1:fa8dc04885d8
1 /*
2 +-----------------------------------------------------------------------------
3 | Project :
4 | Modul :
5 +-----------------------------------------------------------------------------
6 | Copyright 2002 Texas Instruments Berlin, AG
7 | All rights reserved.
8 |
9 | This file is confidential and a trade secret of Texas
10 | Instruments Berlin, AG
11 | The receipt of or possession of this file does not convey
12 | any rights to reproduce or disclose its contents or to
13 | manufacture, use, or sell anything it may describe, in
14 | whole, or in part, without the specific written consent of
15 | Texas Instruments Berlin, AG.
16 +-----------------------------------------------------------------------------
17 | Purpose : This modul is part of the entity LLC and implements all
18 | functions to handles the incoming primitives as described in
19 | the SDL-documentation (IRX-statemachine)
20 +-----------------------------------------------------------------------------
21 */
22
23 #ifndef LLC_IRXP_C
24 #define LLC_IRXP_C
25 #endif
26
27 #define ENTITY_LLC
28
29 /*==== INCLUDES =============================================================*/
30
31 #include "typedefs.h" /* to get Condat data types */
32 #include "vsi.h" /* to get a lot of macros */
33 #include "macdef.h"
34 #include "gprs.h"
35 #include "gsm.h" /* to get a lot of macros */
36 #include "cnf_llc.h" /* to get cnf-definitions */
37 #include "mon_llc.h" /* to get mon-definitions */
38 #include "prim.h" /* to get the definitions of used SAP and directions */
39 #include "llc.h" /* to get the global entity definitions */
40
41 #include "llc_irxf.h" /* to get IRX helper functions */
42
43
44 /*==== CONST ================================================================*/
45
46 /*==== LOCAL VARS ===========================================================*/
47
48 /*==== PRIVATE FUNCTIONS ====================================================*/
49
50 /*==== PUBLIC FUNCTIONS =====================================================*/
51
52 /*
53 +------------------------------------------------------------------------------
54 | Function : irx_ll_getdata_req
55 +------------------------------------------------------------------------------
56 | Description : Handles the primitive LL_GETDATA_REQ
57 |
58 | Parameters : *ll_getdata_req - Ptr to primitive payload
59 |
60 +------------------------------------------------------------------------------
61 */
62 GLOBAL void irx_ll_getdata_req ( T_LL_GETDATA_REQ *ll_getdata_req )
63 {
64 BOOL frame_found;
65 T_LL_UNITDATA_IND *ll_unitdata_ind;
66
67 TRACE_FUNCTION( "ll_getdata_req" );
68
69 SWITCH_LLC (ll_getdata_req->sapi);
70
71 TRACE_1_PARA("s:%d", ll_getdata_req->sapi);
72
73 switch (GET_STATE(IRX))
74 {
75 case IRX_TLLI_UNASSIGNED:
76 /*
77 * Ignore primitive.
78 */
79 PFREE (ll_getdata_req);
80 /* SET_STATE (IRX, SAME_STATE); */
81 break;
82
83 case IRX_TLLI_ASSIGNED:
84 /*
85 * Store L3 ready flag
86 */
87 llc_data->irx->ll_send_ready = TRUE;
88 PFREE (ll_getdata_req);
89 /* SET_STATE (IRX, SAME_STATE); */
90 break;
91
92 case IRX_ABM:
93 /*
94 * Try to retrieve a frame from the queue and
95 * forward it to L3, else store L3 ready flag.
96 */
97 irx_queue_retrieve (&ll_unitdata_ind, &frame_found);
98 if (frame_found)
99 {
100 PPASS (ll_unitdata_ind, ll_data_ind, LL_DATA_IND);
101 TRACE_2_OUT_PARA("s:%d len:%d", ll_data_ind->sapi, BYTELEN(ll_data_ind->sdu.l_buf));
102 PSEND (hCommSNDCP, ll_data_ind);
103
104 llc_data->irx->ll_send_ready = FALSE;
105
106 /* SET_STATE (IRX, SAME_STATE); */
107 }
108 else
109 {
110 llc_data->irx->ll_send_ready = TRUE;
111
112 /* SET_STATE (IRX, SAME_STATE); */
113 }
114 PFREE (ll_getdata_req);
115 break;
116
117 case IRX_ABM_BUSY:
118 /*
119 * Try to retrieve a frame from the queue and
120 * forward it to L3, else store L3 ready flag.
121 */
122 irx_queue_retrieve (&ll_unitdata_ind, &frame_found);
123 if (frame_found)
124 {
125 PPASS (ll_unitdata_ind, ll_data_ind, LL_DATA_IND);
126 TRACE_2_OUT_PARA("s:%d len:%d", ll_data_ind->sapi, BYTELEN(ll_data_ind->sdu.l_buf));
127 PSEND (hCommSNDCP, ll_data_ind);
128
129 llc_data->irx->ll_send_ready = FALSE;
130
131 /*
132 * Indicate the clearance of the 'own received
133 * busy' condition to the peer entity
134 */
135 irx_send_ack (ABIT_SET_REQ);
136
137 SET_STATE (IRX, IRX_ABM);
138 }
139 else
140 {
141 llc_data->irx->ll_send_ready = TRUE;
142
143 /* SET_STATE (IRX, SAME_STATE); */
144 }
145 PFREE (ll_getdata_req);
146 break;
147
148 default:
149 PFREE (ll_getdata_req);
150 TRACE_ERROR( "LL_GETDATA_REQ unexpected" );
151 break;
152 }
153
154 } /* irx_ll_getdata_req() */