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Bluetooth: Controller: Fix extended scanning data length assertion

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Fix assertion due to LLL scheduling of auxiliary PDU
reception was not considered in the ULL when checking for
accumulated data length exceeding the supported maximum scan
data length. This caused the auxiliary context to be release
while LLL was still active with scheduled PDU reception.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2024-01-18 12:04:28 +01:00 committed by Carles Cufí
parent 8262766a0a
commit 4158d9523e
1 changed files with 14 additions and 1 deletions
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15
subsys/bluetooth/controller/ll_sw/ull_scan_aux.c
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@ -538,8 +538,21 @@ void ull_scan_aux_setup(memq_link_t *link, struct node_rx_hdr *rx)
} else {
aux->data_len += data_len;
/* Flush auxiliary PDU receptions and stop any more ULL
* scheduling if accumulated data length exceeds configured
* maximum supported.
*/
if (aux->data_len >= CONFIG_BT_CTLR_SCAN_DATA_LEN_MAX) {
goto ull_scan_aux_rx_flush;
/* If LLL has already scheduled, then let it proceed.
*
* TODO: LLL to check accumulated data length and
* stop further reception.
* Currently LLL will schedule as long as there
* are free node rx available.
*/
if (!ftr->aux_lll_sched) {
goto ull_scan_aux_rx_flush;
}
}
}