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Bluetooth: controller: Do not feature exchange more than once

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Updated the controller implementation to not feature
exchange if already done once either by local or remote peer
device in an active connection session.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2018-11-19 08:25:47 +01:00 • committed by Carles Cufí
commit c326ae729f
1 changed files with 36 additions and 0 deletions
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36
subsys/bluetooth/controller/ll_sw/ctrl.c
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@ -7167,6 +7167,42 @@ static inline void event_fex_prep(struct connection *conn)
{
struct radio_pdu_node_tx *node_tx;
if (conn->common.fex_valid) {
struct radio_pdu_node_rx *node_rx;
struct pdu_data *pdu_ctrl_rx;
/* procedure request acked */
conn->llcp_ack = conn->llcp_req;
/* Prepare the rx packet structure */
node_rx = packet_rx_reserve_get(2);
LL_ASSERT(node_rx);
node_rx->hdr.handle = conn->handle;
node_rx->hdr.type = NODE_RX_TYPE_DC_PDU;
/* prepare feature rsp structure */
pdu_ctrl_rx = (void *)node_rx->pdu_data;
pdu_ctrl_rx->ll_id = PDU_DATA_LLID_CTRL;
pdu_ctrl_rx->len = offsetof(struct pdu_data_llctrl,
feature_rsp) +
sizeof(struct pdu_data_llctrl_feature_rsp);
pdu_ctrl_rx->llctrl.opcode = PDU_DATA_LLCTRL_TYPE_FEATURE_RSP;
(void)memset(&pdu_ctrl_rx->llctrl.feature_rsp.features[0], 0x00,
sizeof(pdu_ctrl_rx->llctrl.feature_rsp.features));
pdu_ctrl_rx->llctrl.feature_req.features[0] =
conn->llcp_features & 0xFF;
pdu_ctrl_rx->llctrl.feature_req.features[1] =
(conn->llcp_features >> 8) & 0xFF;
pdu_ctrl_rx->llctrl.feature_req.features[2] =
(conn->llcp_features >> 16) & 0xFF;
/* enqueue feature rsp structure into rx queue */
packet_rx_enqueue();
return;
}
node_tx = mem_acquire(&_radio.pkt_tx_ctrl_free);
if (node_tx) {
struct pdu_data *pdu_ctrl_tx = (void *)node_tx->pdu_data;