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ath11k is the upstream driver for Qualcomm 802.11ax radios, both for the internal AHB and PCI based cards. This commit does however only provide PCI support while AHB will follow but its SoC specific so it will require an OpenWrt target first. It differs a bit from ath10k as it requires stuff like QRTR, MHI and QMI helpers. PCI variant requires qrtr-mhi and mhi-bus which backports do provide, however we are dropping those in a patch as they will conflict with support for the AHB variant as that one requires qrtr-smd which in turn requires RPMSG and GLINK and its not feasable to provide those in backports as they are really SoC specific. QRTR and MHI in kernel 5.10 are not usable and backporting the changes is not easy as they have changed drastically from 5.10 to 5.15 ath11k will only be available on targets that use kernel 5.15. Signed-off-by: Robert Marko <robimarko@gmail.com>
120 lines
4.0 KiB
Diff
120 lines
4.0 KiB
Diff
From a018750a2cceaf4427c4ee3d9ce3e83a171d5bd6 Mon Sep 17 00:00:00 2001
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From: Youghandhar Chintala <quic_youghand@quicinc.com>
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Date: Fri, 4 Nov 2022 14:24:03 +0530
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Subject: [PATCH] wifi: ath11k: Trigger sta disconnect on hardware restart
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Currently after the hardware restart triggered from the driver, the
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station interface connection remains intact, since a disconnect trigger
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is not sent to userspace. This can lead to a problem in targets where
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the wifi mac sequence is added by the firmware.
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After the target restart, its wifi mac sequence number gets reset to
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zero. Hence AP to which our device is connected will receive frames with
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a wifi mac sequence number jump to the past, thereby resulting in the
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AP dropping all these frames, until the frame arrives with a wifi mac
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sequence number which AP was expecting.
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To avoid such frame drops, its better to trigger a station disconnect
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upon target hardware restart which can be done with API
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ieee80211_reconfig_disconnect exposed to mac80211.
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The other targets are not affected by this change, since the hardware
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params flag is not set.
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Reported-by: kernel test robot <lkp@intel.com>
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Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00887-QCAMSLSWPLZ-1
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Signed-off-by: Youghandhar Chintala <quic_youghand@quicinc.com>
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Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
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Link: https://lore.kernel.org/r/20221104085403.11025-1-quic_youghand@quicinc.com
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---
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drivers/net/wireless/ath/ath11k/core.c | 6 ++++++
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drivers/net/wireless/ath/ath11k/hw.h | 1 +
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drivers/net/wireless/ath/ath11k/mac.c | 7 +++++++
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3 files changed, 14 insertions(+)
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--- a/drivers/net/wireless/ath/ath11k/core.c
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+++ b/drivers/net/wireless/ath/ath11k/core.c
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@@ -195,6 +195,7 @@ static const struct ath11k_hw_params ath
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.tcl_ring_retry = true,
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.tx_ring_size = DP_TCL_DATA_RING_SIZE,
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.smp2p_wow_exit = false,
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+ .support_fw_mac_sequence = false,
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},
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{
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.name = "qca6390 hw2.0",
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@@ -277,6 +278,7 @@ static const struct ath11k_hw_params ath
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.tcl_ring_retry = true,
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.tx_ring_size = DP_TCL_DATA_RING_SIZE,
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.smp2p_wow_exit = false,
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+ .support_fw_mac_sequence = true,
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},
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{
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.name = "qcn9074 hw1.0",
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@@ -356,6 +358,7 @@ static const struct ath11k_hw_params ath
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.tcl_ring_retry = true,
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.tx_ring_size = DP_TCL_DATA_RING_SIZE,
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.smp2p_wow_exit = false,
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+ .support_fw_mac_sequence = false,
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},
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{
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.name = "wcn6855 hw2.0",
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@@ -438,6 +441,7 @@ static const struct ath11k_hw_params ath
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.tcl_ring_retry = true,
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.tx_ring_size = DP_TCL_DATA_RING_SIZE,
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.smp2p_wow_exit = false,
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+ .support_fw_mac_sequence = true,
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},
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{
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.name = "wcn6855 hw2.1",
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@@ -519,6 +523,7 @@ static const struct ath11k_hw_params ath
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.tcl_ring_retry = true,
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.tx_ring_size = DP_TCL_DATA_RING_SIZE,
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.smp2p_wow_exit = false,
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+ .support_fw_mac_sequence = true,
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},
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{
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.name = "wcn6750 hw1.0",
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@@ -597,6 +602,7 @@ static const struct ath11k_hw_params ath
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.tcl_ring_retry = false,
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.tx_ring_size = DP_TCL_DATA_RING_SIZE_WCN6750,
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.smp2p_wow_exit = true,
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+ .support_fw_mac_sequence = true,
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},
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};
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--- a/drivers/net/wireless/ath/ath11k/hw.h
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+++ b/drivers/net/wireless/ath/ath11k/hw.h
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@@ -219,6 +219,7 @@ struct ath11k_hw_params {
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bool tcl_ring_retry;
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u32 tx_ring_size;
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bool smp2p_wow_exit;
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+ bool support_fw_mac_sequence;
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};
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struct ath11k_hw_ops {
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--- a/drivers/net/wireless/ath/ath11k/mac.c
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+++ b/drivers/net/wireless/ath/ath11k/mac.c
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@@ -8010,6 +8010,7 @@ ath11k_mac_op_reconfig_complete(struct i
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struct ath11k *ar = hw->priv;
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struct ath11k_base *ab = ar->ab;
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int recovery_count;
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+ struct ath11k_vif *arvif;
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if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
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return;
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@@ -8045,6 +8046,12 @@ ath11k_mac_op_reconfig_complete(struct i
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ath11k_dbg(ab, ATH11K_DBG_BOOT, "reset success\n");
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}
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}
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+ if (ar->ab->hw_params.support_fw_mac_sequence) {
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+ list_for_each_entry(arvif, &ar->arvifs, list) {
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+ if (arvif->is_up && arvif->vdev_type == WMI_VDEV_TYPE_STA)
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+ ieee80211_hw_restart_disconnect(arvif->vif);
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+ }
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+ }
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}
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mutex_unlock(&ar->conf_mutex);
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