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This commit adds the LListHead class which is a wrapper around the
linuxlist. It adds an additional member to refer to the container,
since the container_of macro doesn't work properly with C++ classes.
All functions and macros from linuxlist.h are support except for the
entry macros (e.g. llist_entry, llist_for_each_entry, ...). To access
the container (entry), an entry() method is provided instead:
llist_for_each(pos, &elems) {
pos->entry()->do_something();
}
Sponsored-by: On-Waves ehf
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Currently only TBF objects are used to handle the data flow between
the MS and the SGSN. MS specific data (e.g. pending LLC frames, TLLI)
is copied between successive TBFs. If all TBFs (uplink and downlink)
are idle for some time, all information about the MS is discarded in
the PCU. This makes the implementation of some features more
difficult, e.g. proper TLLI and timing advance handling,
connection based CS selection, and proper management of multiple TBF.
This commit adds the GprsMs class that is intended to hold
information directly related to the MS and to keep references to the
active TBFs.
The class is not yet integrated with the other PCU code. A GprsMs
object container and MS specific fields (TA, CS) will be added in
later commits.
Note that calling detach_tbf() can possibly delete the MS object
depending on the callback implementation.
Ticket: #1674
Sponsored-by: On-Waves ehf
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When cross-compiling osmo-bts/osmo-pcu one can not easily
execute the testsuite. By adding the OSMO_QEMU variable in
front of the normal execution we can execute the tests. This
should work for native and cross builds.
$ OSMO_QEMU="qemu-arm -L /opt/poky/1.1.2/sysroots/armv5te-poky-linux-gnueabi/" make check
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* Make append_data, remaining_space and fits_in_current.. work
on m_length and not the index. This ways things can't overflow.
* The current API consumer was moving the m_index so it should have
worked okay.
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During a routing area update a new P-TMSI was assigned. During
the PACKET CONTROL ACK on the DL we notice the change of TLLI
but didn't propagate this. This means that a Routing Area Update
Complete was only sent after a new RACH request.
Addresses:
<0007> gprs_rlcmac_meas.cpp:103 UL RSSI of TLLI=0x88661bc6: -67 dBm
<0002> bts.cpp:945 Got ACK, but UL TBF is gone TLLI=0xe512eba3
<0007> gprs_rlcmac_meas.cpp:158 DL packet loss of IMSI=274080000004765 / TLLI=0xe512eba3: 0%
<0002> tbf.cpp:668 TBF TFI=0 TLLI=0x88661bc6 T3169 timeout during transsmission
<0002> tbf.cpp:690 - Assignment was on PACCH
<0002> tbf.cpp:694 - No uplink data received yet
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