Bluetooth: Controller: Only validate CIS SDU interval for BN > 0 #88939
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Some in the-wild devices use SDU interval of 0 when BN == 0; This is not allowed by BT Core Spec v6.0, but is not specifically mentioned in v5.4 and earlier. To allow connecting a CIS to these devices, relax the check on SDU interval Note: LL/CIS/PER/BI-07-C only checks rejection of invalid SDU interval with BN > 0, so it still passes with this change Signed-off-by: Troels Nilsson <[email protected]>
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| if ((pdu->llctrl.cis_req.c_bn > 0 && c_sdu_interval < BT_HCI_ISO_SDU_INTERVAL_MIN) || | ||
| (pdu->llctrl.cis_req.p_bn > 0 && p_sdu_interval < BT_HCI_ISO_SDU_INTERVAL_MIN)) { |
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| if ((pdu->llctrl.cis_req.c_bn > 0 && c_sdu_interval < BT_HCI_ISO_SDU_INTERVAL_MIN) || | |
| (pdu->llctrl.cis_req.p_bn > 0 && p_sdu_interval < BT_HCI_ISO_SDU_INTERVAL_MIN)) { | |
| /* | |
| Some in the-wild devices use SDU interval of 0 when BN == 0; This | |
| is not allowed by BT Core Spec v6.0, but is not specifically | |
| mentioned in v5.4 and earlier. To allow connecting a CIS to these | |
| devices, relax the check on SDU interval | |
| */ | |
| if ((pdu->llctrl.cis_req.c_bn > 0 && c_sdu_interval < BT_HCI_ISO_SDU_INTERVAL_MIN) || | |
| (pdu->llctrl.cis_req.p_bn > 0 && p_sdu_interval < BT_HCI_ISO_SDU_INTERVAL_MIN)) { |
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Some in the-wild devices use SDU interval of 0 when BN == 0; This is not allowed by BT Core Spec v6.0, but is not specifically mentioned in v5.4 and earlier. To allow connecting a CIS to these devices, relax the check on SDU interval
Note: LL/CIS/PER/BI-07-C only checks rejection of invalid SDU interval with BN > 0, so it still passes with this change