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Bluetooth: controller: split: Fix DLE duplicate requests

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Fix implementation to handle back-to-back and duplicate
LENGTH_REQ PDU reception.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2020-03-24 12:53:40 +05:30 • committed by Carles Cufí
commit 45500f3dc9
1 changed files with 14 additions and 3 deletions
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17
subsys/bluetooth/controller/ll_sw/ull_conn.c
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@ -4678,9 +4678,20 @@ static inline int length_req_rsp_recv(struct ll_conn *conn, memq_link_t *link,
#endif /* CONFIG_BT_CTLR_PHY */
}
} else {
/* Drop response with no Local initiated request. */
LL_ASSERT(pdu_rx->llctrl.opcode ==
PDU_DATA_LLCTRL_TYPE_LENGTH_RSP);
/* Drop response with no Local initiated request and duplicate
* requests.
*/
if (pdu_rx->llctrl.opcode != PDU_DATA_LLCTRL_TYPE_LENGTH_RSP) {
mem_release(tx, &mem_conn_tx_ctrl.free);
/* Defer new request if previous in resize state */
if (conn->llcp_length.state ==
LLCP_LENGTH_STATE_RESIZE) {
return -EBUSY;
}
}
return 0;
}
send_length_resp: