FreeCalypso > hg > fc-tourmaline
annotate src/g23m-fad/tcpip/rnet/rnet_rt/rnet_rt_api_getbufsize.c @ 303:f76436d19a7a default tip
!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> |
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date | Thu, 08 Jun 2023 08:23:37 +0000 |
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1 /** |
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2 * @file rnet_rt_api_getbufsize.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_getbufsize.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 * Use to determine the amount of data pending in the network's input buffer |
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32 * that can be read from the connection ID. |
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33 * |
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34 * If desc is stream oriented (TCP), returns the amount of data that can be read |
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35 * in a single call to the rnet_recv function; this might not be the same as the |
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36 * total amount of data queued on the socket. |
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37 * If desc is message oriented (UDP), returns the size of the first datagram |
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38 * (message) queued on the socket. |
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39 * |
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40 * Use the socket option SO_NREAD. |
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41 * |
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42 * @param desc Connection identifier [IN]. |
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43 * @param size_p Pointer to an unsigned int in which the result is stored [OUT]. |
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44 * @return RNET_NOT_INITIALIZED NET subsystem not initialized (internal error). |
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45 * RNET_INTERNAL_ERR Network subsystem failed. |
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46 * RNET_INVALID_PARAMETER The connection ID is invalid. |
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47 * RNET_NOT_READY Still processing a callback function. |
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48 * RNET_OK Value successfully get. |
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49 */ |
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50 |
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51 T_RNET_RET rnet_rt_get_buff_size (T_RNET_DESC * desc, |
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52 UINT32 * size_p) |
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53 { |
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54 int err, len, nread; |
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55 |
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56 len = sizeof( nread); |
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57 |
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58 /* get number of bytes in receive buffer */ |
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59 rvf_lock_mutex( &rnet_rt_env_ctrl_blk_p->mutex); |
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60 err = ngSAIOGetOption( (NGsock *) desc, NG_IOCTL_SOCKET, NG_SO_NREAD, |
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61 &nread, &len); |
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62 rvf_unlock_mutex( &rnet_rt_env_ctrl_blk_p->mutex); |
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63 |
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64 if( err == NG_EOK) { |
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65 *size_p = nread; |
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66 return( RNET_OK); |
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67 } |
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68 |
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69 return( rnet_rt_ngip_error( err)); |
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70 } |
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71 |
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72 #endif /* ifdef RNET_CFG_REAL_TRANSPORT */ |
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73 |