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Bluetooth: Controller: Fix regression in scan aux release

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Fix regression in scan aux release now that aux context is
retrieved from the node rx when supporting multiple chain
reception.

Relates to commit a8065926ac ("Bluetooth: Controller: Fix
to release aux context stored in node rx").

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada
2025-02-13 05:58:58 +01:00
committed by Fabio Baltieri
parent aec991ef1a
commit 49642efa41
3 changed files with 53 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
subsys/bluetooth/controller/ll_sw/nordic/lll/lll_scan.c
View File

@@ -1089,6 +1089,9 @@ static void isr_done_cleanup(void *param)
lll->is_stop = 1U;
}
/* LLL scheduled auxiliary PDU reception is_abort on duration expire or
* aborted in the unreserved time space.
*/
if (lll->is_aux_sched) {
struct node_rx_pdu *node_rx2;

19
subsys/bluetooth/controller/ll_sw/nordic/lll/lll_sync.c
View File

@@ -635,7 +635,13 @@ static void abort_cb(struct lll_prepare_param *prepare_param, void *param)
lll = prepare_param->param;
lll->skip_prepare += (lll->lazy_prepare + 1U);
/* Reset Sync context association with any Aux context as the chain reception is aborted. */
/* Reset Sync context association with any Aux context as the chain reception is aborted.
* There is no race with ULL execution context assigning lll_aux as this is prepare being
* aborted and no assignment would be done yet before the superior PDU is received.
* TODO: This code here is redundant as isr_rx_done_cleanup() should ensure it is reset
* on every periodic sync chain done. Remove it if there is no regression running
* conformance tests.
*/
lll->lll_aux = NULL;
/* Extra done event, to check sync lost */
@@ -819,6 +825,11 @@ static int isr_rx(struct lll_sync *lll, uint8_t node_type, uint8_t crc_ok,
if (node_type != NODE_RX_TYPE_EXT_AUX_REPORT) {
/* Reset Sync context association with any Aux context
* as a new chain is being setup for reception here.
* TODO: This code here is redundant as
* isr_rx_done_cleanup() should ensure it is reset
* on every periodic sync chain done. Remove it if
* there is no regression running conformance
* tests.
*/
lll->lll_aux = NULL;
@@ -1189,7 +1200,11 @@ static void isr_rx_done_cleanup(struct lll_sync *lll, uint8_t crc_ok, bool sync_
{
struct event_done_extra *e;
/* Reset Sync context association with any Aux context as the chain reception is done. */
/* Reset Sync context association with any Aux context as the chain reception is done.
* By code inspection there should not be a race that ULL execution context assigns lll_aux
* that would be reset here, because either we are here not receiving a chain PDU or the
* lll_aux has been set in the node rx type NODE_RX_TYPE_EXT_AUX_RELEASE before we are here.
*/
lll->lll_aux = NULL;
/* Calculate and place the drift information in done event */

34
subsys/bluetooth/controller/ll_sw/ull_scan_aux.c
View File

@@ -1126,6 +1126,10 @@ void ull_scan_aux_release(memq_link_t *link, struct node_rx_pdu *rx)
param_ull = HDR_LLL2ULL(rx->rx_ftr.param);
if (ull_scan_is_valid_get(param_ull)) {
/* Release aux context when LLL scheduled auxiliary PDU
* reception is_abort on duration expire or aborted in the
* unreserved time space.
*/
struct lll_scan *lll;
/* Mark for buffer for release */
@@ -1134,8 +1138,21 @@ void ull_scan_aux_release(memq_link_t *link, struct node_rx_pdu *rx)
lll = rx->rx_ftr.param;
lll_aux = rx->rx_ftr.lll_aux;
/* Under race condition when LLL scheduling a reception of
* auxiliary PDU, a scan aux context may be assigned late and
* the node rx releasing the aux context will not have it.
* Release the scan aux context assigned in the scan context.
*/
if (!lll_aux) {
lll_aux = lll->lll_aux;
}
} else if (!IS_ENABLED(CONFIG_BT_CTLR_SYNC_PERIODIC) ||
ull_scan_aux_is_valid_get(param_ull)) {
/* Release aux context when ULL scheduled auxiliary PDU
* reception is aborted.
*/
/* Mark for buffer for release */
rx->hdr.type = NODE_RX_TYPE_RELEASE;
@@ -1150,9 +1167,21 @@ void ull_scan_aux_release(memq_link_t *link, struct node_rx_pdu *rx)
/* reset data len total */
sync->data_len = 0U;
/* Release aux context in case of chain PDU reception, otherwise
* lll_aux is NULL.
*/
lll = rx->rx_ftr.param;
lll_aux = rx->rx_ftr.lll_aux;
/* Under race condition when LLL scheduling a reception of
* auxiliary PDU, a scan aux context may be assigned late and
* the node rx releasing the aux context will not have it.
* Release the scan aux context assigned in the sync context.
*/
if (!lll_aux) {
lll_aux = lll->lll_aux;
}
/* Change node type so HCI can dispatch report for truncated
* data properly.
*/
@@ -1183,13 +1212,16 @@ void ull_scan_aux_release(memq_link_t *link, struct node_rx_pdu *rx)
scan = ull_scan_is_valid_get(scan);
if (scan) {
is_stop = scan->is_stop;
} else {
} else if (IS_ENABLED(CONFIG_BT_CTLR_SYNC_PERIODIC)) {
struct lll_sync *sync_lll;
struct ll_sync_set *sync;
sync_lll = (void *)lll;
sync = HDR_LLL2ULL(sync_lll);
is_stop = sync->is_stop;
} else {
LL_ASSERT(0);
return;
}
if (!is_stop) {