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Bluetooth: Controller: Remove incorrect check of RFU bit

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RFU bits has to be ignored according to the spec; In addition,
some MediaTek devices seems to have it set (by mistake I assume),
so having the check means we cannot sync to these devices

Signed-off-by: Troels Nilsson <trnn@demant.com>
This commit is contained in:
Troels Nilsson 2024-09-11 09:12:49 +02:00 • committed by David Leach
commit 6f64f77557
1 changed files with 5 additions and 6 deletions
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11
subsys/bluetooth/controller/ll_sw/ull_scan_aux.c
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@ -361,13 +361,12 @@ void ull_scan_aux_setup(memq_link_t *link, struct node_rx_pdu *rx)
h = (void *)p->ext_hdr_adv_data;
/* Regard PDU as invalid if a RFU field is set, we do not know the
* size of this future field, hence will cause incorrect calculation of
* offset to ACAD field.
/* Note: The extended header contains a RFU flag that could potentially cause incorrect
* calculation of offset to ACAD field if it gets used to add a new header field; However,
* from discussion in BT errata ES-8080 it seems clear that BT SIG is aware that the RFU
* bit can not be used to add a new field since existing implementations will not be able
* to calculate the start of ACAD in that case
*/
if (h->rfu) {
goto ull_scan_aux_rx_flush;
}
ptr = h->data;