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Bluetooth: controller: Unified ISO-AL TX SDU fragment count

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Implemented incrementing TX SDU fragment count such that it indicates
the number of completed SDU fragments in the PDU being emitted for both
unframed and framed transmission.

Signed-off-by: Nirosharn Amarasinghe <niag@demant.com>
This commit is contained in:
Nirosharn Amarasinghe 2022-04-27 17:58:57 +02:00 committed by Carles Cufí
parent 64c9a521d4
commit fc107a0775
1 changed files with 32 additions and 6 deletions
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38
subsys/bluetooth/controller/ll_sw/isoal.c
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@ -1202,6 +1202,7 @@ static isoal_status_t isoal_tx_try_emit_pdu(struct isoal_source *source,
pp->payload_number,
pp->pdu_written);
pp->payload_number++;
pp->sdu_fragments = 0;
}
return err;
@ -1273,11 +1274,12 @@ static isoal_status_t isoal_tx_unframed_produce(struct isoal_source *source,
/* Reset PDU fragmentation count for this SDU */
pp->pdu_cnt = 0;
/* The start of an unframed SDU will always be in a new PDU.
* There cannot be any other fragments packed.
*/
pp->sdu_fragments = 0;
}
pp->sdu_fragments++;
/* PDUs should be created until the SDU fragment has been fragmented or
* if this is the last fragment of the SDU, until the required padding
* PDU(s) are sent.
@ -1298,6 +1300,13 @@ static isoal_status_t isoal_tx_unframed_produce(struct isoal_source *source,
pp->pdu_available
);
/* End of the SDU fragment has been reached when the last of the
* SDU is packed into a PDU.
*/
bool end_of_sdu_frag = !padding_pdu &&
((consume_len > 0 && consume_len == packet_available) ||
zero_length_sdu);
if (consume_len > 0) {
err |= session->pdu_write(&pdu->contents,
pp->pdu_written,
@ -1309,6 +1318,13 @@ static isoal_status_t isoal_tx_unframed_produce(struct isoal_source *source,
packet_available -= consume_len;
}
if (end_of_sdu_frag) {
/* Each PDU will carry the number of completed SDU
* fragments contained in that PDU.
*/
pp->sdu_fragments++;
}
/* End of the SDU is reached at the end of the last SDU fragment
* or if this is a single fragment SDU
*/
@ -1568,12 +1584,8 @@ static isoal_status_t isoal_tx_framed_produce(struct isoal_source *source,
/* Reset PDU fragmentation count for this SDU */
pp->pdu_cnt = 0;
pp->sdu_fragments = 0;
}
pp->sdu_fragments++;
/* PDUs should be created until the SDU fragment has been fragmented or if
* this is the last fragment of the SDU, until the required padding PDU(s)
* are sent.
@ -1612,6 +1624,13 @@ static isoal_status_t isoal_tx_framed_produce(struct isoal_source *source,
pp->pdu_available
);
/* End of the SDU fragment has been reached when the last of the
* SDU is packed into a PDU.
*/
bool end_of_sdu_frag = !padding_pdu &&
((consume_len > 0 && consume_len == packet_available) ||
zero_length_sdu);
if (consume_len > 0) {
err |= session->pdu_write(&pdu->contents,
pp->pdu_written,
@ -1623,6 +1642,13 @@ static isoal_status_t isoal_tx_framed_produce(struct isoal_source *source,
packet_available -= consume_len;
}
if (end_of_sdu_frag) {
/* Each PDU will carry the number of completed SDU
* fragments contained in that PDU.
*/
pp->sdu_fragments++;
}
/* End of the SDU is reached at the end of the last SDU fragment
* or if this is a single fragment SDU
*/