diff options
author | Baochen Qiang <quic_bqiang@quicinc.com> | 2024-04-22 15:11:45 +0300 |
---|---|---|
committer | Kalle Valo <quic_kvalo@quicinc.com> | 2024-04-23 12:27:15 +0300 |
commit | 692921ead832c0fccbf2b426140917333312a7f1 (patch) | |
tree | f8ca4625ded44989532f28713cbaac22d2818d84 /drivers/net/wireless/ath | |
parent | 7b3d4eb283d2ee6323c60e7bc523cb7bef3c7fc1 (diff) |
wifi: ath12k: flush all packets before suspend
In order to send out all packets before going to suspend, current code
adds a 500ms delay as a workaround. It is a rough estimate and may not
work.
Fix this by checking packet counters, if counters become zero, then all
packets are sent out or dropped.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240412060620.27519-7-quic_bqiang@quicinc.com
Diffstat (limited to 'drivers/net/wireless/ath')
-rw-r--r-- | drivers/net/wireless/ath/ath12k/core.c | 20 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath12k/mac.c | 28 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath12k/mac.h | 1 |
3 files changed, 38 insertions, 11 deletions
diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c index 90e04d602822..d55245b48020 100644 --- a/drivers/net/wireless/ath/ath12k/core.c +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -44,15 +44,25 @@ static int ath12k_core_rfkill_config(struct ath12k_base *ab) int ath12k_core_suspend(struct ath12k_base *ab) { - int ret; + struct ath12k *ar; + int ret, i; if (!ab->hw_params->supports_suspend) return -EOPNOTSUPP; - /* TODO: there can frames in queues so for now add delay as a hack. - * Need to implement to handle and remove this delay. - */ - msleep(500); + rcu_read_lock(); + for (i = 0; i < ab->num_radios; i++) { + ar = ath12k_mac_get_ar_by_pdev_id(ab, i); + if (!ar) + continue; + ret = ath12k_mac_wait_tx_complete(ar); + if (ret) { + ath12k_warn(ab, "failed to wait tx complete: %d\n", ret); + rcu_read_unlock(); + return ret; + } + } + rcu_read_unlock(); ret = ath12k_dp_rx_pktlog_stop(ab, true); if (ret) { diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index cfb883181616..f6cf8b8c4b18 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -7417,22 +7417,38 @@ static int ath12k_mac_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value) return -EOPNOTSUPP; } -static void ath12k_mac_flush(struct ath12k *ar) +static int ath12k_mac_flush(struct ath12k *ar) { long time_left; + int ret = 0; time_left = wait_event_timeout(ar->dp.tx_empty_waitq, (atomic_read(&ar->dp.num_tx_pending) == 0), ATH12K_FLUSH_TIMEOUT); - if (time_left == 0) - ath12k_warn(ar->ab, "failed to flush transmit queue %ld\n", time_left); + if (time_left == 0) { + ath12k_warn(ar->ab, + "failed to flush transmit queue, data pkts pending %d\n", + atomic_read(&ar->dp.num_tx_pending)); + ret = -ETIMEDOUT; + } time_left = wait_event_timeout(ar->txmgmt_empty_waitq, (atomic_read(&ar->num_pending_mgmt_tx) == 0), ATH12K_FLUSH_TIMEOUT); - if (time_left == 0) - ath12k_warn(ar->ab, "failed to flush mgmt transmit queue %ld\n", - time_left); + if (time_left == 0) { + ath12k_warn(ar->ab, + "failed to flush mgmt transmit queue, mgmt pkts pending %d\n", + atomic_read(&ar->num_pending_mgmt_tx)); + ret = -ETIMEDOUT; + } + + return ret; +} + +int ath12k_mac_wait_tx_complete(struct ath12k *ar) +{ + ath12k_mac_drain_tx(ar); + return ath12k_mac_flush(ar); } static void ath12k_mac_op_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, diff --git a/drivers/net/wireless/ath/ath12k/mac.h b/drivers/net/wireless/ath/ath12k/mac.h index 3f5e1be0dff9..f826822d30c8 100644 --- a/drivers/net/wireless/ath/ath12k/mac.h +++ b/drivers/net/wireless/ath/ath12k/mac.h @@ -78,4 +78,5 @@ enum ath12k_supported_bw ath12k_mac_mac80211_bw_to_ath12k_bw(enum rate_info_bw b enum hal_encrypt_type ath12k_dp_tx_get_encrypt_type(u32 cipher); int ath12k_mac_rfkill_enable_radio(struct ath12k *ar, bool enable); int ath12k_mac_rfkill_config(struct ath12k *ar); +int ath12k_mac_wait_tx_complete(struct ath12k *ar); #endif |