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Try to get the company name of our sponsor right...
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the other
Right now the memcpy with the data will copy data to itself as
the new_msg->data and msg->data are the same due the previous
copying of the header which included copying the list entry..
We allocate a message as big as the current one, then we have to
set all pointers by looking of how far they are away from the
msg->_data and add that to the new pointers.
Also copy the OpenBSC/GPRS specific CB data, also do the same
for calculating the offset to the data... At the end we should
end up with a copy...
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Use UINT_MAX (or -1) if the peer can not be found.
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Some BSS that connect to the proxy do not continue to perform the
RESET procedure after a timeout. In order to resurrect them, we
simply start a RESET procedure.
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As only NS-UNITDATA messages are ever passed into the Gb Proxy,
we need to do the msgb_free() at a much higher point in the calling
stack, i.e. inside the NS protocol layer. This means it is now
the same logic as in OpenBSC itself.
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The old idea was to take a msgb from gbprox_rcvmsg() and then
modify it and finally send it all the way down to nsip_sendmsg()
to the remote peer.
However, this introduces memory management difficulties, as we then
have to distinguish three cases:
* msgb was sent to a remote peer
* we sent some error message and need to free the msgb
* we need to make n-1 copies in case of a BSSVC-RESET from the SGSN
So instead we now simply always copy the message if we pass it on.
All messages received by gbprox_rcvmsg() are msgb_free()d in the very
same routine
All messages allocated by tx2peer() or tx2sgsn() are freed after
nsip_sendmsg()
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The Gb Proxy can then restart the RESET procedure.
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If a PTP BVC is BVC-RESET by the BSS, the PDU contains the
Cell Identifier. We can snoop this into our gbprox_peer structure
for better visualization of each peer in they vty.
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make sure we mark the NS connection as 'SGSN-facing' if the NSEI matches
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In order to reuse the existing bssgp_tx_* functions without pulling
in the dependencies of gprs_bssgp.c, we have to move those functions
to gprs_bssgp_util.c
Furthermore, we can remove gbprox_nsi and replace it with bssgp_nsi,
and we can do proper processing of BVC-RESET messages coming from
the SGSN on the signalling BVC. In that case we need to send RESET
messages to all the BSS.
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The 'show gbproxy' now actually shows information about the Gb proxy
BTS peers, whereas 'show ns' shows information about existing NS links.
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