Tx ul ack/nack: Avoid sending invalid/unknown TLLI
It could happen that if MS sends first UL blocks without TLLI (wrongly, due to being in contention resolution), the submitted UL ACK/NACK would contain an invalid TLLI. Related: OS#1940 Change-Id: Ibae5df6cfbb56f8f8007cb9fec9c29006d673b72
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@ -890,8 +890,12 @@ static void write_packet_uplink_ack_gprs(
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bitvec_write_field(dest, &wp, mcs_chan_code(tbf->current_cs()), 2); // CHANNEL_CODING_COMMAND
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write_packet_ack_nack_desc_gprs(dest, wp, window, is_final);
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if (tbf->is_tlli_valid()) {
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bitvec_write_field(dest, &wp, 1, 1); // 1: have CONTENTION_RESOLUTION_TLLI
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bitvec_write_field(dest, &wp, tbf->tlli(), 32); // CONTENTION_RESOLUTION_TLLI
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} else {
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bitvec_write_field(dest, &wp, 0, 1); // 0: don't have CONTENTION_RESOLUTION_TLLI
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}
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bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Timing Advance
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bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Power Control Parameters
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@ -1072,8 +1076,14 @@ static void write_packet_uplink_ack_egprs(
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bitvec_write_field(dest, &wp, 1, 1); // PRE_EMPTIVE_TRANSMISSION, TODO: This resembles GPRS, change it?
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bitvec_write_field(dest, &wp, 0, 1); // 0: no PRR_RETRANSMISSION_REQUEST, TODO: clarify
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bitvec_write_field(dest, &wp, 0, 1); // 0: no ARAC_RETRANSMISSION_REQUEST, TODO: clarify
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if (tbf->is_tlli_valid()) {
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bitvec_write_field(dest, &wp, 1, 1); // 1: have CONTENTION_RESOLUTION_TLLI
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bitvec_write_field(dest, &wp, tbf->tlli(), 32); // CONTENTION_RESOLUTION_TLLI
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} else {
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bitvec_write_field(dest, &wp, 0, 1); // 0: don't have CONTENTION_RESOLUTION_TLLI
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}
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bitvec_write_field(dest, &wp, 1, 1); // TBF_EST (enabled)
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bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Timing Advance
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bitvec_write_field(dest, &wp, 0, 1); // 0: don't have Packet Extended Timing Advance
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