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The following commit(s) were added to refs/heads/master by this push:
new 02ceea9f5 nimble/ll/big: Ensure the Segmentation Header fits the SDU
02ceea9f5 is described below
commit 02ceea9f54908939c123d9ebfaee6f3ab53801f5
Author: Mariusz Skamra <[email protected]>
AuthorDate: Mon Apr 7 10:15:30 2025 +0200
nimble/ll/big: Ensure the Segmentation Header fits the SDU
As a workaround for SDU Interval issue, if the user requests
the Framed PDUs to be used, make sure the Segmentation Header
fits the PDU, so that we could avoid the segmentation.
---
nimble/controller/src/ble_ll_iso_big.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/nimble/controller/src/ble_ll_iso_big.c
b/nimble/controller/src/ble_ll_iso_big.c
index 1454ed6a5..774465315 100644
--- a/nimble/controller/src/ble_ll_iso_big.c
+++ b/nimble/controller/src/ble_ll_iso_big.c
@@ -1327,7 +1327,15 @@ ble_ll_iso_big_hci_create(const uint8_t *cmdbuf, uint8_t
len)
bp.framing = cmd->framing;
bp.iso_interval = iso_interval;
bp.bn = 1;
- bp.max_pdu = bp.max_sdu;
+ if (cmd->framing == BLE_HCI_ISO_FRAMING_UNFRAMED) {
+ bp.max_pdu = bp.max_sdu;
+ } else {
+ /**
+ * XXX: The requirements for using Unframed PDUs are met but the
user
+ * requested Framed PDUs explicitly. Ensure the PDU fits the
Segmentation Header.
+ */
+ bp.max_pdu = bp.max_sdu + 5;
+ }
}
rc = ble_ll_iso_big_create(cmd->big_handle, cmd->adv_handle, cmd->num_bis,
