Bluetooth: controller: ull/lll: Workaround CPR procedure collision
This is a workaround for IOP issue, where peer rejects LLCP Slave Connection Parameter Request with LMP Error Transaction Collision error code even if previous request is complete at the instant. Signed-off-by: Alexander Svensen <alsv@nordicsemi.no>
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1 changed files with 10 additions and 13 deletions
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@ -3485,29 +3485,26 @@ static inline void reject_ind_conn_upd_recv(struct ll_conn *conn,
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goto reject_ind_conn_upd_recv_exit;
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goto reject_ind_conn_upd_recv_exit;
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}
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}
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/* Same Procedure or Different Procedure Collision */
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/* FIXME: handle unsupported LL parameters error */
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/* If not same procedure, stop procedure timeout, else
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* continue timer until phy upd ind is received.
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*/
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else if (rej_ext_ind->error_code != BT_HCI_ERR_LL_PROC_COLLISION) {
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else if (rej_ext_ind->error_code != BT_HCI_ERR_LL_PROC_COLLISION) {
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/* update to next ticks offset */
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if (lll->role) {
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conn->slave.ticks_to_offset =
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conn->llcp_conn_param.ticks_to_offset_next;
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}
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}
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if (conn->llcp_conn_param.state == LLCP_CPR_STATE_RSP_WAIT) {
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LL_ASSERT(conn_upd_curr == conn);
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LL_ASSERT(conn_upd_curr == conn);
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/* reset mutex */
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/* reset mutex */
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conn_upd_curr = NULL;
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conn_upd_curr = NULL;
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/* Procedure complete */
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/* Procedure complete */
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conn->llcp_conn_param.ack =
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conn->llcp_conn_param.ack = conn->llcp_conn_param.req;
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conn->llcp_conn_param.req;
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/* Stop procedure timeout */
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/* Stop procedure timeout */
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conn->procedure_expire = 0U;
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conn->procedure_expire = 0U;
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/* update to next ticks offsets */
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if (lll->role) {
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conn->slave.ticks_to_offset =
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conn->llcp_conn_param.ticks_to_offset_next;
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}
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}
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}
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/* skip event generation if not cmd initiated */
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/* skip event generation if not cmd initiated */
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