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Bluetooth: controller: LLCP and ISOAL Fixes for EBQ LL tests

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- Prioritize CIS_REQ handling in (old) LLCP
- Reject if CIS_REQ uses exisiting CIS ID

These fixes prevent assertions in /LL/CIS/PER/BV-38-C.

Signed-off-by: Morten Priess <mtpr@oticon.com>
This commit is contained in:
Morten Priess 2022-04-13 15:13:21 +02:00 • committed by Carles Cufí
commit 3d4215d6a3
2 changed files with 34 additions and 22 deletions
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54
subsys/bluetooth/controller/ll_sw/ull_conn.c
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@ -1113,6 +1113,21 @@ int ull_conn_llcp(struct ll_conn *conn, uint32_t ticks_at_expire, uint16_t lazy)
conn->llcp_type = LLCP_CONN_UPD;
conn->llcp_ack -= 2U;
#if defined(CONFIG_BT_CTLR_PERIPHERAL_ISO)
} else if (conn->llcp_cis.req != conn->llcp_cis.ack) {
if (conn->llcp_cis.state == LLCP_CIS_STATE_RSP_WAIT) {
const struct lll_conn *lll = &conn->lll;
uint16_t event_counter;
/* Calculate current event counter */
event_counter = lll->event_counter +
lll->latency_prepare + lazy;
/* Handle CIS response */
event_send_cis_rsp(conn, event_counter);
}
#endif /* CONFIG_BT_CTLR_PERIPHERAL_ISO */
/* check if feature exchange procedure is requested */
} else if (conn->llcp_feature.ack != conn->llcp_feature.req) {
/* handle feature exchange state machine */
@ -1152,27 +1167,6 @@ int ull_conn_llcp(struct ll_conn *conn, uint32_t ticks_at_expire, uint16_t lazy)
/* handle PHY Upd state machine */
event_phy_req_prep(conn);
#endif /* CONFIG_BT_CTLR_PHY */
#if defined(CONFIG_BT_CTLR_PERIPHERAL_ISO)
} else if (conn->llcp_cis.req != conn->llcp_cis.ack) {
struct lll_conn *lll = &conn->lll;
uint16_t event_counter;
/* Calculate current event counter */
event_counter = lll->event_counter +
lll->latency_prepare + lazy;
if (conn->llcp_cis.state == LLCP_CIS_STATE_RSP_WAIT) {
/* Handle CIS response */
event_send_cis_rsp(conn, event_counter);
} else if (conn->llcp_cis.state ==
LLCP_CIS_STATE_INST_WAIT) {
/* Start CIS peripheral */
event_peripheral_iso_prep(conn,
event_counter,
ticks_at_expire);
}
#endif /* CONFIG_BT_CTLR_PERIPHERAL_ISO */
}
}
@ -1347,6 +1341,24 @@ int ull_conn_llcp(struct ll_conn *conn, uint32_t ticks_at_expire, uint16_t lazy)
}
}
#if defined(CONFIG_BT_CTLR_PERIPHERAL_ISO)
/* In any state, allow processing of CIS peripheral waiting for
* instant.
*/
if (conn->llcp_cis.state == LLCP_CIS_STATE_INST_WAIT) {
const struct lll_conn *lll = &conn->lll;
uint16_t event_counter;
/* Calculate current event counter */
event_counter = lll->event_counter +
lll->latency_prepare + lazy;
event_peripheral_iso_prep(conn, event_counter,
ticks_at_expire);
}
#endif /* CONFIG_BT_CTLR_PERIPHERAL_ISO */
return 0;
#else /* CONFIG_BT_LL_SW_LLCP_LEGACY */
LL_ASSERT(conn->lll.handle != LLL_HANDLE_INVALID);