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view src/g23m-gprs/sndcp/sndcp_sdaf.c @ 149:163b839c55de
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author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 16 Nov 2020 06:03:26 +0000 |
parents | fa8dc04885d8 |
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/* +----------------------------------------------------------------------------- | Project : GPRS (8441) | Modul : sndcp_sdaf.c +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This modul is part of the entity SNDCP and implements all | procedures and functions as described in the | SDL-documentation (SDA-statemachine) +----------------------------------------------------------------------------- */ #define ENTITY_SNDCP /*==== INCLUDES =============================================================*/ #include "typedefs.h" /* to get Condat data types */ #include "vsi.h" /* to get a lot of macros */ #include "macdef.h" #include "prim.h" /* to get the definitions of used SAP and directions */ #include "dti.h" #include "sndcp.h" /* to get the global entity definitions */ #include "sndcp_f.h" /* to get the functions to access the global arrays*/ #include "sndcp_sdaf.h" /* to get functions from sda */ #include "sndcp_pdas.h" /* to get the signals to service pda.*/ #include "sndcp_mgs.h" /* to get the signals to service mg.*/ #include "sndcp_cias.h" /* to get the signals to service cia.*/ /*==== CONST ================================================================*/ /*==== LOCAL VARS ===========================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ LOCAL UBYTE sda_get_dcomp (T_LL_DATA_IND* ll_data_ind); /* +------------------------------------------------------------------------------ | Function : sda_get_dcomp +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Returns the DCOMP value in the sdu of the given primitive. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ LOCAL UBYTE sda_get_dcomp (T_LL_DATA_IND* ll_data_ind) { return (ll_data_ind->sdu.buf[ll_data_ind->sdu.o_buf / 8 + 1] & 0xf0) >> 4 ; } /* sda_get_dcomp() */ /* +------------------------------------------------------------------------------ | Function : sda_get_nsapi +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Gets the NSAPI from the segment header. | | Parameters : ll_data_ind T_LL_DATA_IND*, nsapi* | +------------------------------------------------------------------------------ */ GLOBAL void sda_get_nsapi (T_LL_DATA_IND* ll_data_ind, UBYTE* nsapi) { /* * The nsapi number in the sn-pdu header is the least sig half first octet. */ UBYTE first = ll_data_ind->sdu.buf[(ll_data_ind->sdu.o_buf / 8)]; *nsapi = first & 0xf; } /* sda_get_nsapi() */ /*==== PUBLIC FUNCTIONS =====================================================*/ /* +------------------------------------------------------------------------------ | Function : sda_get_data_if_nec +------------------------------------------------------------------------------ | Description : This function sends a SIG_SD_PD_GETDATA_REQ to the affected | SAPI | if necessary (service variable llc_may_send was set to FALSE) | and sets llc_may_send to TRUE or does nothing (service | variable llc_may_send already was set to TRUE). | | Parameters : FPAR IN sapi UBYTE the number of the affected SAPI | +------------------------------------------------------------------------------ */ GLOBAL void sda_get_data_if_nec (UBYTE sapi) { UBYTE sapi_index = 0; USHORT state = 0; TRACE_FUNCTION( "sda_get_data_if_nec" ); #ifdef SNDCP_TRACE_ALL if (sndcp_data->sda->llc_may_send) { TRACE_EVENT("llc_may_send TRUE"); } else { TRACE_EVENT("llc_may_send FALSE"); } #endif /* * set service instance according to sapi in signal */ sndcp_get_sapi_index(sapi, &sapi_index); sndcp_data->sda = & sndcp_data->sda_base[sapi_index]; sndcp_get_sapi_state(sapi, &state); if (! sndcp_data->sda->llc_may_send) { sig_sda_pda_getdata_req(sapi); /* * Mark this LLC SAPI as pending. */ sndcp_data->sda->llc_may_send = TRUE; } } /* sd_get_data_if_nec() */ /* +------------------------------------------------------------------------------ | Function : sda_is_seg_valid +------------------------------------------------------------------------------ | Description : According to GSM 4.65, 6.9 unacknowledged segments for NSAPIs | in acknowledged mode and vice versa and also segments for not | activated NSAPIs shall be discarded without further error | notification. | | Parameters : nsapi, sapi, BOOL ack, BOOL* valid | +------------------------------------------------------------------------------ */ GLOBAL void sda_is_seg_valid(T_LL_DATA_IND* ll_data_ind, BOOL* valid) { UBYTE nsapi = 0; UBYTE sapi = 0; /* * Is the affected NSAPI using acknowledged LLC mode? */ BOOL ack = TRUE; /* * Is the NSAPI used at all? */ BOOL used = FALSE; TRACE_FUNCTION( "sda_is_seg_valid" ); *valid = TRUE; /* * Get the affected nsapi from primitive. */ sda_get_nsapi(ll_data_ind, &nsapi); /* * If the NSAPI is not used, leave. */ sndcp_is_nsapi_used(nsapi, &used); if (!used) { *valid = FALSE; return; } /* * To which sapi is the given nsapi mapped? */ sndcp_get_nsapi_sapi(nsapi, &sapi); /* * If the sapi in the primitive is the wrong one, leave. */ if (sapi != ll_data_ind->sapi) { *valid = FALSE; return; } /* * If the nsapi normally uses unacknowledged LLC mode, leave. * Note: if 'ack' is false the NSAPI is in unacknowledged * mode normally and the 'sda' service is the wrong one * anyway, but it was chosen because of the ack primitive. */ sndcp_get_nsapi_ack(nsapi, &ack); if (!ack) { *valid = FALSE; return; } } /* sd_is_seg_valid() */ /* +------------------------------------------------------------------------------ | Function : sda_delete_cur_sn_data_ind +------------------------------------------------------------------------------ | Description : The descriptor list in service variable cur_sn_data_ind is | deleted recursively, then the primitive is freed with PFREE | macro. | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sda_delete_cur_sn_data_ind (U8 nsapi) { TRACE_FUNCTION( "sda_delete_cur_sn_data_ind" ); if (sndcp_data->sda->cur_sn_data_ind[nsapi] != NULL) { #ifdef _SNDCP_DTI_2_ MFREE_PRIM(sndcp_data->sda->cur_sn_data_ind[nsapi]); #else /*_SNDCP_DTI_2_*/ PFREE_DESC(sndcp_data->sda->cur_sn_data_ind[nsapi]); #endif /*_SNDCP_DTI_2_*/ sndcp_data->sda->cur_sn_data_ind[nsapi] = NULL; } } /* sda_delete_cur_sn_data_ind() */ /* +------------------------------------------------------------------------------ | Function : sda_f_bit +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Returns TRUE if the f bit in the given sdu is set to 1, else | FALSE. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL BOOL sda_f_bit (T_LL_DATA_IND* ll_data_ind) { UBYTE f_b = ll_data_ind->sdu.buf[ll_data_ind->sdu.o_buf / 8] & 0x40; TRACE_FUNCTION( "sda_f_bit" ); return (f_b > 0); } /* sda_f_bit() */ /* +------------------------------------------------------------------------------ | Function : sda_get_pcomp +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Returns the PCOMP value in the sdu of the given primitive. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL UBYTE sda_get_pcomp (T_LL_DATA_IND* ll_data_ind) { return ll_data_ind->sdu.buf[ll_data_ind->sdu.o_buf / 8 + 1] & 0xf; } /* sda_get_pcomp() */ /* +------------------------------------------------------------------------------ | Function : sda_init +------------------------------------------------------------------------------ | Description : Initialize the entity instance. | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sda_init (void) { TRACE_FUNCTION( "sda_init" ); sndcp_data->sda = & sndcp_data->sda_base[0]; INIT_STATE(SDA_0, SDA_DEFAULT); #ifdef SNDCP_2to1 sndcp_data->sda->sapi = PS_SAPI_3; #else sndcp_data->sda->sapi = LL_SAPI_3; #endif /*SNDCP_2to1*/ sndcp_data->sda = & sndcp_data->sda_base[1]; INIT_STATE(SDA_1, SDA_DEFAULT); #ifdef SNDCP_2to1 sndcp_data->sda->sapi = PS_SAPI_5; #else sndcp_data->sda->sapi = LL_SAPI_5; #endif /*SNDCP_2to1*/ sndcp_data->sda = & sndcp_data->sda_base[2]; INIT_STATE(SDA_2, SDA_DEFAULT); #ifdef SNDCP_2to1 sndcp_data->sda->sapi = PS_SAPI_9; #else sndcp_data->sda->sapi = LL_SAPI_9; #endif /*SNDCP_2to1*/ sndcp_data->sda = & sndcp_data->sda_base[3]; INIT_STATE(SDA_3, SDA_DEFAULT); #ifdef SNDCP_2to1 sndcp_data->sda->sapi = PS_SAPI_11; #else sndcp_data->sda->sapi = LL_SAPI_11; #endif /*SNDCP_2to1*/ { UBYTE sapi_index = 0; for (sapi_index = 0; sapi_index < SNDCP_NUMBER_OF_SAPIS; sapi_index++) { UBYTE nsapi = 0; sndcp_data->sda = & sndcp_data->sda_base[sapi_index]; for (nsapi = 0; nsapi < SNDCP_NUMBER_OF_NSAPIS; nsapi++) { sda_set_nsapi_rec(nsapi, FALSE); sndcp_data->sda->cur_sn_data_ind[nsapi] = NULL; } sndcp_data->sda->llc_may_send = FALSE; sndcp_data->sda->uncomp_npdu_num = 0; } } } /* sda_init() */ /* +------------------------------------------------------------------------------ | Function : sda_is_nsapi_rec +------------------------------------------------------------------------------ | Description : Returns TRUE if the given nsapi is receptive, else | FALSE. | | Parameters : nsapi, BOOL* b | +------------------------------------------------------------------------------ */ GLOBAL void sda_is_nsapi_rec (UBYTE nsapi, BOOL* b) { *b = sndcp_data->sda->nsapi_rec_ra[nsapi]; #ifdef SNDCP_TRACE_ALL TRACE_EVENT("is nsapi receptive?"); if (*b) { TRACE_EVENT("TRUE"); } else { TRACE_EVENT("FALSE"); } #endif } /* sda_is_nsapi_rec() */ /* +------------------------------------------------------------------------------ | Function : sda_m_bit +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Returns TRUE if the m bit in the given sdu is set to 1, else | FALSE. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL BOOL sda_m_bit (T_LL_DATA_IND* ll_data_ind) { UBYTE m_b = 0; TRACE_FUNCTION( "sda_m_bit" ); m_b = ll_data_ind->sdu.buf[ll_data_ind->sdu.o_buf / 8] & 0x10; return (m_b > 0); } /* sda_m_bit() */ /* +------------------------------------------------------------------------------ | Function : sda_set_nsapi_rec +------------------------------------------------------------------------------ | Description : Sets the given nsapi_rec_ra element to the given BOOL. | | Parameters : nsapi, BOOL b | +------------------------------------------------------------------------------ */ GLOBAL void sda_set_nsapi_rec (UBYTE nsapi, BOOL b) { sndcp_data->sda->nsapi_rec_ra[nsapi] = b; #ifdef SNDCP_TRACE_ALL TRACE_EVENT("set nsapi receptive to"); if (b) { TRACE_EVENT("TRUE"); } else { TRACE_EVENT("FALSE"); } #endif } /* sda_set_nsapi_rec */ /* +------------------------------------------------------------------------------ | Function : sda_ac_f_f0 +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Represents the label AC_F_F0 in SDL. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL void sda_ac_f_f0 (T_LL_DATA_IND* ll_data_ind) { /* * Get the NSAPI number from ll_data_ind. */ UBYTE nsapi = 0; sda_get_nsapi(ll_data_ind, &nsapi); sig_sda_mg_re_est(ll_data_ind->sapi, nsapi); PFREE(ll_data_ind); } /* sda_ac_f_f0() */ /* +------------------------------------------------------------------------------ | Function : sda_ac_f_f1_m0 +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Represents the label AC_F_F1_M0 in SDL. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL void sda_ac_f_f1_m0 (T_LL_DATA_IND* ll_data_ind) { sndcp_set_ack_transfer_params(ll_data_ind); sig_sda_cia_cia_decomp_req(ll_data_ind); } /* sda_ac_f_f1_m0() */ /* +------------------------------------------------------------------------------ | Function : sda_ac_f_f1_m1 +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Represents the label AC_F_F1_M1 in SDL. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL void sda_ac_f_f1_m1 (T_LL_DATA_IND* ll_data_ind) { UBYTE nsapi = 0; sda_get_nsapi(ll_data_ind, &nsapi); sndcp_set_ack_transfer_params(ll_data_ind); sig_sda_cia_cia_decomp_req(ll_data_ind); sndcp_set_nsapi_rec_state(nsapi, SDA_RECEIVE_SUBSEQUENT_SEGMENT); } /* sda_ac_f_f1_m0() */ /* +------------------------------------------------------------------------------ | Function : sda_ac_s_f0_m0 +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Represents the label UN_S_F0_M0 in SDL. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL void sda_ac_s_f0_m0 (T_LL_DATA_IND* ll_data_ind) { UBYTE nsapi = 0; sda_get_nsapi(ll_data_ind, &nsapi); sndcp_data->cur_seg_pos[nsapi] = SEG_POS_LAST; sndcp_set_nsapi_rec_state(nsapi, SDA_RECEIVE_FIRST_SEGMENT); sig_sda_cia_cia_decomp_req(ll_data_ind); } /* sda_ac_s_f0_m0() */ /* +------------------------------------------------------------------------------ | Function : sda_ac_s_f0_m1 +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Represents the label AC_S_F0_M1 in SDL. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL void sda_ac_s_f0_m1 (T_LL_DATA_IND* ll_data_ind) { UBYTE nsapi = 0; sda_get_nsapi(ll_data_ind, &nsapi); sndcp_data->cur_seg_pos[nsapi] = SEG_POS_NONE; sig_sda_cia_cia_decomp_req(ll_data_ind); } /* sda_ac_s_f0_m1() */ /* +------------------------------------------------------------------------------ | Function : sda_ac_s_f1_m1 +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Represents the label AC_S_F1_M1 in SDL. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL void sda_ac_s_f1_m1 (T_LL_DATA_IND* ll_data_ind) { /* * Are PCOMP and DCOMP value the same as in the first segment? */ UBYTE prim_dcomp = 0; UBYTE prim_pcomp = 0; UBYTE nsapi = 0; sda_get_nsapi(ll_data_ind, &nsapi); prim_dcomp = sda_get_dcomp(ll_data_ind); prim_pcomp = sda_get_pcomp(ll_data_ind); if (prim_dcomp == sndcp_data->cur_dcomp[nsapi] && prim_pcomp == sndcp_data->cur_pcomp[nsapi]) { sndcp_data->big_head[nsapi] = TRUE; sda_ac_s_f0_m1(ll_data_ind); } else { sda_delete_cur_sn_data_ind(nsapi); sig_sda_mg_re_est(ll_data_ind->sapi, nsapi); PFREE(ll_data_ind); } } /* sda_ac_s_f1_m1() */ /* +------------------------------------------------------------------------------ | Function : sda_ac_s_f1_m0 +------------------------------------------------------------------------------ | Description : E X T R A convenience function, not in SDL. | Represents the label AC_S_F1_M1 in SDL. | | Parameters : ll_data_ind T_LL_DATA_IND* | +------------------------------------------------------------------------------ */ GLOBAL void sda_ac_s_f1_m0 (T_LL_DATA_IND* ll_data_ind) { /* * Are PCOMP and DCOMP value the same as in the first segment? */ UBYTE prim_dcomp = 0; UBYTE prim_pcomp = 0; UBYTE nsapi = 0; sda_get_nsapi(ll_data_ind, &nsapi); prim_dcomp = sda_get_dcomp(ll_data_ind); prim_pcomp = sda_get_pcomp(ll_data_ind); if (prim_dcomp == sndcp_data->cur_dcomp[nsapi] && prim_pcomp == sndcp_data->cur_pcomp[nsapi]) { sndcp_data->big_head[nsapi] = TRUE; sda_ac_s_f0_m0(ll_data_ind); } else { sda_delete_cur_sn_data_ind(nsapi); sig_sda_mg_re_est(ll_data_ind->sapi, nsapi); PFREE(ll_data_ind); } } /* sda_ac_s_f1_m0() */