--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/g23m-gprs/llc/llc_uirxs.c	Thu Oct 13 04:24:13 2016 +0000
@@ -0,0 +1,363 @@
+/*
++-----------------------------------------------------------------------------
+|  Project :
+|  Modul   :
++-----------------------------------------------------------------------------
+|  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 LLC and implements all
+|             functions to handles the incoming process internal signals as
+|             described in the SDL-documentation (UIRX-statemachine)
++-----------------------------------------------------------------------------
+*/
+
+#ifndef LLC_UIRXS_C
+#define LLC_UIRXS_C
+#endif
+
+#define ENTITY_LLC
+
+/*==== INCLUDES =============================================================*/
+
+#include "typedefs.h"   /* to get Condat data types */
+#include "vsi.h"        /* to get a lot of macros */
+#include "macdef.h"
+#include "gprs.h"
+#include "gsm.h"        /* to get a lot of macros */
+#include "cnf_llc.h"    /* to get cnf-definitions */
+#include "mon_llc.h"    /* to get mon-definitions */
+#include "prim.h"       /* to get the definitions of used SAP and directions */
+#include "llc.h"        /* to get the global entity definitions */
+
+#include "llc_uirxf.h"  /* to get local UIRX functions */
+
+/*==== CONST ================================================================*/
+
+/*==== LOCAL VARS ===========================================================*/
+
+/*==== PRIVATE FUNCTIONS ====================================================*/
+
+/*==== PUBLIC FUNCTIONS =====================================================*/
+
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_llme_uirx_assign_req
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_LLME_UIRX_ASSIGN_REQ
+|
+| Parameters  :
+|
++------------------------------------------------------------------------------
+*/
+#ifndef CF_FAST_EXEC
+
+GLOBAL void sig_llme_uirx_assign_req (void)
+{
+  TRACE_ISIG( "sig_llme_uirx_assign_req" );
+
+  switch (GET_STATE(UIRX))
+  {
+    case UIRX_TLLI_UNASSIGNED_NOT_READY:
+      SET_STATE (UIRX, UIRX_ADM_NOT_READY);
+      /*
+       * Initialise current incarnation.
+       */
+      uirx_init_sapi();
+      break;
+    case UIRX_TLLI_UNASSIGNED_READY:
+      SET_STATE (UIRX, UIRX_ADM_READY);
+      /*
+       * Initialise current incarnation.
+       */
+      uirx_init_sapi();
+      break;
+    default:
+      TRACE_ERROR( "SIG_LLME_UIRX_ASSIGN_REQ unexpected" );
+      break;
+  }
+} /* sig_llme_uirx_assign_req() */
+
+#endif /* CF_FAST_EXEC */
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_llme_uirx_unassign_req
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_LLME_UIRX_UNASSIGN_REQ
+|
+| Parameters  :
+|
++------------------------------------------------------------------------------
+*/
+#ifndef CF_FAST_EXEC
+
+GLOBAL void sig_llme_uirx_unassign_req (void)
+{
+  TRACE_ISIG( "sig_llme_uirx_unassign_req" );
+
+  switch (GET_STATE(UIRX))
+  {
+    case UIRX_ADM_NOT_READY:
+      SET_STATE (UIRX, UIRX_TLLI_UNASSIGNED_NOT_READY);
+      break;
+    case UIRX_ADM_READY:
+      SET_STATE (UIRX, UIRX_TLLI_UNASSIGNED_READY);
+      break;
+    default:
+      TRACE_ERROR( "SIG_LLME_UIRX_UNASSIGN_REQ unexpected" );
+      break;
+  }
+} /* sig_llme_uirx_unassign_req() */
+
+#endif /* CF_FAST_EXEC */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_llme_uirx_reset_req
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_LLME_UIRX_RESET_REQ
+|
+| Parameters  :
+|
++------------------------------------------------------------------------------
+*/
+#ifndef CF_FAST_EXEC
+
+GLOBAL void sig_llme_uirx_reset_req (void)
+{
+  TRACE_ISIG( "sig_llme_uirx_reset_req" );
+
+  switch (GET_STATE(UIRX))
+  {
+    case UIRX_TLLI_UNASSIGNED_NOT_READY:
+      /*
+       * No break!
+       */
+    case UIRX_TLLI_UNASSIGNED_READY:
+      /*
+       * No break!
+       */
+    case UIRX_ADM_NOT_READY:
+      /*
+       * No break!
+       */
+    case UIRX_ADM_READY:
+      /*
+       * Only use this procedure as long as it initalises only the requested
+       * variables on reset (V(UR) as of V6.4.0).
+       */
+      uirx_init_sapi();
+      break;
+    default:
+      TRACE_ERROR( "SIG_LLME_UIRX_RESET_REQ unexpected" );
+      break;
+  }
+} /* sig_llme_uirx_reset_req() */
+
+#endif /* CF_FAST_EXEC */
+
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_rx_uirx_data_ind
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_RX_UIRX_DATA_IND
+|
+| Parameters  : ll_unitdata_ind - a valid pointer to an LL-UNITDATA-IND
+|                                 primitive
+|               nu - N(U) of the received UI frame
+|
++------------------------------------------------------------------------------
+*/
+/*#if defined(CF_FAST_EXEC) || defined(_SIMULATION_) || \
+   !defined(REL99)     || defined(LL_2to1) */
+
+GLOBAL void sig_rx_uirx_data_ind (T_LL_UNITDATA_IND *ll_unitdata_ind,
+                                  T_FRAME_NUM nu)
+{
+  USHORT            diff;
+
+  TRACE_ISIG( "sig_rx_uirx_data_ind" );
+
+  /*
+   * SAPI has already been checked by service RX.
+   */
+
+  switch (GET_STATE(UIRX))
+  {
+    case UIRX_ADM_NOT_READY:
+      /*
+       * Calculate relative difference of V(UR) and N(U): add 512 to V(UR),
+       * subtract N(U), apply modulo 512 to get back into the valid range
+       */
+      diff = (((llc_data->sapi->vur +
+        (MAX_SEQUENCE_NUMBER+1)) - nu) % (MAX_SEQUENCE_NUMBER+1));
+
+      /*
+       * Original formula:
+       *   V(UR)-32 <= N(U) < V(UR)
+       * Translated:
+       *   the relative difference must be maximally 32, and minimally 1
+       */
+      if ((diff > 0) AND (diff <= 32))
+      {
+        /*
+         * We've got an retranmitted frame. Check if we got it already.
+         */
+        if (uirx_check_nu (nu, llc_data->sapi->vur) == TRUE)
+        {
+          /*
+           * N(U) already received. Discard frame without any futher action.
+           */
+          PFREE (ll_unitdata_ind);
+          TRACE_0_INFO("Duplicate frame number ignored");
+          return;
+        }
+      }
+      else
+      {
+        /*
+         * We've got a new, not retransmitted, frame. Set V(UR) to the new value.
+         */
+        uirx_set_new_vur ((T_FRAME_NUM)(nu + 1));
+      }
+
+      /*
+       * Store the N(U) of the frame to be already received.
+       */
+      uirx_store_nu (nu, llc_data->sapi->vur);
+
+      /*
+       * We are not ready to send data. Store frame in UIRX queue,
+       * if possible.
+       */
+      uirx_queue_store (ll_unitdata_ind);
+      break;
+
+    case UIRX_ADM_READY:
+      /*
+       * Calculate relative difference of V(UR) and N(U): add 512 to V(UR),
+       * subtract N(U), apply modulo 512 to get back into the valid range
+       */
+      diff = (((llc_data->sapi->vur +
+        (MAX_SEQUENCE_NUMBER+1)) - nu) % (MAX_SEQUENCE_NUMBER+1));
+
+      /*
+       * Original formula:
+       *   V(UR)-32 <= N(U) < V(UR)
+       * Translated:
+       *   the relative difference must be maximally 32, and minimally 1
+       */
+      if ((diff > 0) AND (diff <= 32))
+      {
+        /*
+         * We've got an retranmitted frame. Check if we got it already.
+         */
+        if (uirx_check_nu (nu, llc_data->sapi->vur) == TRUE)
+        {
+          /*
+           * N(U) already received. Discard frame without any futher action.
+           */
+          PFREE (ll_unitdata_ind);
+          TRACE_0_INFO("Duplicated frame number ignored");
+          return;
+        }
+      }
+      else
+      {
+        /*
+         * We've got a new, not retransmitted, frame. Set V(UR) to the new value.
+         */
+        uirx_set_new_vur ((T_FRAME_NUM)(nu + 1));
+      }
+
+      /*
+       * Store the N(U) of the frame to be already received.
+       */
+      uirx_store_nu (nu, llc_data->sapi->vur);
+
+      /*
+       * Label S_UNITDATA
+       */
+
+      /*
+       * No flow control for SAPI 1.
+       */
+      if (llc_data->current_sapi != LL_SAPI_1)
+      {
+        /*
+         * Transit to state ADM_NOT_READY.
+         */
+        SET_STATE (UIRX, UIRX_ADM_NOT_READY);
+      }
+
+      /*
+       * Send primitive LL-UNITDATA-IND to either GMM, SNDCP, or GSMS,
+       * depending on the SAPI.
+       */
+      switch (ll_unitdata_ind->sapi)
+      {
+        case LL_SAPI_1:
+          TRACE_PRIM_TO("GMM");
+          TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi,
+                                           BYTELEN(ll_unitdata_ind->sdu.l_buf),
+                                           ll_unitdata_ind->cipher);
+          PSEND (hCommGMM, ll_unitdata_ind);
+          break;
+
+        case LL_SAPI_3:
+        case LL_SAPI_5:
+        case LL_SAPI_9:
+        case LL_SAPI_11:
+          TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi,
+                                           BYTELEN(ll_unitdata_ind->sdu.l_buf),
+                                           ll_unitdata_ind->cipher);
+          PSEND (hCommSNDCP, ll_unitdata_ind);
+          break;
+
+        case LL_SAPI_7:
+#ifdef LL_2to1
+          TRACE_PRIM_TO("MM");
+          TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi,
+                                           BYTELEN(ll_unitdata_ind->sdu.l_buf),
+                                           ll_unitdata_ind->cipher);
+          PSEND (hCommMM, ll_unitdata_ind);
+#else
+          TRACE_PRIM_TO("GSMS");
+          TRACE_3_OUT_PARA("s:%d len:%d c:%d", ll_unitdata_ind->sapi,
+                                           BYTELEN(ll_unitdata_ind->sdu.l_buf),
+                                           ll_unitdata_ind->cipher);
+          PSEND (hCommGSMS, ll_unitdata_ind);
+#endif
+          break;
+
+        default:
+          PFREE (ll_unitdata_ind);
+          TRACE_ERROR ("invalid global SAPI value");
+          break;
+      }
+      break;
+
+    default:
+      PFREE (ll_unitdata_ind);
+      TRACE_ERROR( "SIG_RX_UIRX_DATA_IND unexpected" );
+      break;
+  }
+} /* sig_rx_uirx_data_ind() */
+
+/*#endif */ /* CF_FAST_EXEC || _SIMULATION_ */
+
+