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annotate src/g23m-fad/tcpip/rnet/rnet_rt/rnet_rt_api_shutdown.c @ 303:f76436d19a7a default tip

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!GPRS config: fix long-standing AT+COPS chance hanging bug There has been a long-standing bug in FreeCalypso going back years: sometimes in the AT command bring-up sequence of an ACI-only MS, the AT+COPS command would produce only a power scan followed by cessation of protocol stack activity (only L1 ADC traces), instead of the expected network search sequence. This behaviour was seen in different FC firmware versions going back to Citrine, and seemed to follow some law of chance, not reliably repeatable. This bug has been tracked down and found to be specific to !GPRS configuration, stemming from our TCS2/TCS3 hybrid and reconstruction of !GPRS support that was bitrotten in TCS3.2/LoCosto version. ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3 version and had to be pulled from TCS2 - but as it turns out, there is a new field in the MMR_REG_REQ primitive that needs to be set correctly, and that psa_mms.c module is the place where this initialization needed to be added.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 08 Jun 2023 08:23:37 +0000
parents fa8dc04885d8
children
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1 /**
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2 * @file rnet_rt_api_shutdown.c
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3 *
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4 * RNET_RT API
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5 *
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6 * @author Regis Feneon
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7 * @version 0.1
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8 */
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9
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10 /*
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11 * $Id: rnet_rt_api_shutdown.c,v 1.3 2002/10/30 15:23:34 rf Exp $
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12 * $Name: ti_20021030 $
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13 *
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14 * History:
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15 *
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16 * Date Author Modification
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17 * --------------------------------------------------
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18 * 3/22/2002 Regis Feneon Create
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19 *
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20 * (C) Copyright 2002 by TI, All Rights Reserved
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21 *
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22 */
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23
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24 #include "rnet_cfg.h"
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25 #ifdef RNET_CFG_REAL_TRANSPORT
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26
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27 #include "rnet_rt_i.h"
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28 #include "rnet_rt_env.h"
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29
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30 /**
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31 * Disables the sending on a socket and informs the peer
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32 * about it.
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33 *
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34 * Subsequent calls to the send function are disallowed.
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35 * For TCP sockets, a FIN will be sent after all data is sent and acknowledged by the receiver.
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36 * The rnet_shutdown function does not frees the connection ID. Any resources attached
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37 * to the ID will not be freed until rnet_close is invoked.
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38 *
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39 * To assure that all data is sent and received on a connection (TCP) before it
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40 * is closed, an application should use rnet_shutdown to close connection before calling
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41 * rnet_close. For example, to initiate a graceful disconnect:
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42 * 1) Call rnet_shutdown.
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43 * 2) When RNET_ERROR_IND with RNET_CONN_CLOSED is received, call rnet_recv until
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44 * the len parameter is zero.
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45 * 3) Call rnet_close.
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46 *
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47 * Following technique describes how to minimize the chance of problems
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48 * occurring during connection teardown. In this example, the client is responsible for
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49 * initiating a graceful shutdown.
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50 *
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51 * Client Side Server Side
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52 * (1) Invoke rnet_shutdown to
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53 * signal end of session and that
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54 * client has no more data to send.
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55 * (2) Receive RNET_ERROR_IND with RNET_CONN_CLOSED,
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56 * indicating graceful shutdown in progress
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57 * and that all data has been received.
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58 * (3) Send any remaining response data with rnet_send.
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59 * (5') Get RNET_RECV_IND and (4) Invoke rnet_shutdown to
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60 * invoke rnet_recv to get any indicate server has no more data to send.
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61 * response data sent by server.
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62 * (5) Receive RNET_ERROR_IND (4') Invoke rnet_close.
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63 * with RNET_CONN_CLOSED.
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64 * (6) Invoke rnet_close.
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65 *
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66 * The timing sequence is maintained from step (1) to step (6) between the client and
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67 * the server, except for step (4') and (5') which only has local timing significance in
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68 * the sense that step (5) follows step (5') on the client side while step (4') follows
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69 * step (4) on the server side, with no timing relationship with the remote party.
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70 *
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71 * @param desc Connection identifier.
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72 * @return RNET_NOT_INITIALIZED NET subsystem not initialized (internal error).
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73 * RNET_INTERNAL_ERR Network subsystem failed.
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74 * RNET_INVALID_PARAMETER The connection ID is invalid.
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75 * The descriptor is not connected (TCP only).
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76 * RNET_NOT_READY Still processing a callback function.
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77 * RNET_OK Connection shutdown, sending impossible
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78 * RNET_ERROR_IND with the parameter RNET_CONN_CLOSED
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79 * will be sent to the peer.
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80 */
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81
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82 T_RNET_RET rnet_rt_shutdown (T_RNET_DESC * desc)
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83 {
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84 int err;
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85
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86 /* stop sending data */
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87 rvf_lock_mutex( &rnet_rt_env_ctrl_blk_p->mutex);
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88 err = ngSAIOShutdown( (NGsock *) desc, 1);
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89 rvf_unlock_mutex( &rnet_rt_env_ctrl_blk_p->mutex);
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90
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91 return( rnet_rt_ngip_error( err));
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92 }
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93
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94 #endif /* ifdef RNET_CFG_REAL_TRANSPORT */
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95