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Bluetooth: controller: ull/lll: Do not feature exc 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: Alexander Svensen <alsv@nordicsemi.no>
This commit is contained in:
Alexander Svensen 2019-05-03 12:20:07 +02:00 • committed by Alberto Escolar
commit e5cf9ce1f2
1 changed files with 38 additions and 0 deletions
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38
subsys/bluetooth/controller/ll_sw/ull_conn.c
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@ -2168,6 +2168,44 @@ static inline void event_fex_prep(struct ll_conn *conn)
{
struct node_tx *tx;
if (conn->common.fex_valid) {
struct node_rx_pdu *rx;
struct pdu_data *pdu;
/* procedure request acked */
conn->llcp_ack = conn->llcp_req;
/* get a rx node for ULL->LL */
rx = ll_pdu_rx_alloc();
if (!rx) {
return;
}
rx->hdr.handle = conn->lll.handle;
rx->hdr.type = NODE_RX_TYPE_DC_PDU;
/* prepare feature rsp structure */
pdu = (void *)rx->pdu;
pdu->ll_id = PDU_DATA_LLID_CTRL;
pdu->len = offsetof(struct pdu_data_llctrl, feature_rsp) +
sizeof(struct pdu_data_llctrl_feature_rsp);
pdu->llctrl.opcode = PDU_DATA_LLCTRL_TYPE_FEATURE_RSP;
(void)memset(&pdu->llctrl.feature_rsp.features[0], 0x00,
sizeof(pdu->llctrl.feature_rsp.features));
pdu->llctrl.feature_req.features[0] =
conn->llcp_features & 0xFF;
pdu->llctrl.feature_req.features[1] =
(conn->llcp_features >> 8) & 0xFF;
pdu->llctrl.feature_req.features[2] =
(conn->llcp_features >> 16) & 0xFF;
/* enqueue feature rsp structure into rx queue */
ll_rx_put(rx->hdr.link, rx);
ll_rx_sched();
return;
}
tx = mem_acquire(&mem_conn_tx_ctrl.free);
if (tx) {
struct pdu_data *pdu = (void *)tx->pdu;