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Cédric Roux authored
Implement data transfer (38.331 5.2): - transmit operation (in nr_pdcp_entity_recv_sdu) - receive operation (in nr_pdcp_entity_recv_pdu) - t-Reordering expiration To keep track of time the function nr_pdcp_wakeup_timer_thread has been added and is called by the gNB's MAC scheduler via nr_pdcp_tick. (The UE has not been modified.) A thread has been introduced to set time of all the existing PDCP entities in the system. This probably does not scale well with many PDCP entities (many UEs connected to the gNB). To be changed at some point when needed. Hopefully, with a few UEs this mechanism won't be too problematic (ie. won't cause realtime problems). The problem with time in PDCP is that SDUs are kept if some are missing, to do reordering. A timer is started and when it expires we have to transmit the SDUs even if some are still missing. We want to do that as soon as possible. So we have to check timers often (every millisecond). In RLC the time is set when there is so...
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