kernel/drivers/net/wireless/ath/ath11k/debugfs_sta.c, branch linux-6.2.y

wifi: ath11k: Add support to get power save duration for each client

2022-09-26T09:34:38Z

Add support to get the following power save information through debugfs interface, * Current ps state of the peer * Time duration since the peer is in power save * Total duration of the peer spent in power save Above information is helpful in debugging the issues with power save clients. This patch also add trace log support for PS timekeeper to track the PS state change of the peers alongs with the peer MAC address and timestamp. Use the below commands to get the above power save information, To know the time_since_station_in_power_save: cat /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/stations/ XX:XX:XX:XX:XX:XX/current_ps_duration To know power_save_duration: cat /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/stations/ XX:XX:XX:XX:XX:XX/total_ps_duration To reset the power_save_duration of all stations connected to AP: echo 1 > /sys/kernel/debug/ieee80211/phyX/ath11k/reset_ps_duration To enable/disable the ps_timekeeper: echo Y > /sys/kernel/debug/ieee80211/phyX/ath11k/ps_timekeeper_enable Y = 1 to enable and Y = 0 to disable. To record PS timekeeer logs after enabling ps_timekeeper: trace-cmd record -e ath11k_ps_timekeeper Tested-on: Tested-on: IPQ8074 WLAN.HK.2.5.0.1-00991-QCAHKSWPL_SILICONZ-1 Signed-off-by: Venkateswara Naralasetty Signed-off-by: Tamizh Chelvam Raja Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220725054601.14719-1-quic_tamizhr@quicinc.com

ath11k: report tx bitrate for iw wlan station dump

2021-12-20T18:29:01Z

HTT_T2H_MSG_TYPE_PPDU_STATS_IND is a message which include the ppdu info, currently it is not report from firmware for ath11k, then the tx bitrate of "iw wlan0 station dump" always show an invalid value "tx bitrate: 6.0 MBit/s". To address the issue, this is to parse the info of tx complete report from firmware and indicate the tx rate to mac80211. After that, "iw wlan0 station dump" show the correct tx bit rate such as: tx bitrate: 78.0 MBit/s MCS 12 tx bitrate: 144.4 MBit/s VHT-MCS 7 short GI VHT-NSS 2 tx bitrate: 286.7 MBit/s HE-MCS 11 HE-NSS 2 HE-GI 0 HE-DCM 0 tx bitrate: 1921.5 MBit/s 160MHz HE-MCS 9 HE-NSS 2 HE-GI 0 HE-DCM 0 Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1 Signed-off-by: Wen Gong Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20211217093722.5739-1-quic_wgong@quicinc.com

ath11k: add HTT stats support for new stats

2021-09-28T13:53:15Z

Add HTT stats support for, 29-ATH11K_DBG_HTT_EXT_STATS_PEER_CTRL_PATH_TXRX_STATS: Used to dump the control path txrx stats for each connected peer. Usage: echo 29 > /sys/kernel/debug/ieee80211/phyx/ath11k/htt_stats_type cat /sys/kernel/debug/ieee80211/phyx/netdev\:wlan0/stations/ /htt_peer_stats. 31-ATH11K_DBG_HTT_EXT_STATS_PDEV_TX_RATE_TXBF_STATS: Used to dump the per pdev tx rate txbf stats. Usage: echo 31 > /sys/kernel/debug/ieee80211/phyx/ath11k/htt_stats_type cat /sys/kernel/debug/ieee80211/phyx/ath11k/htt_stats 32-ATH11k_DBG_HTT_EXT_STATS_TXBF_OFDMA: Used to dump the TXBF ofdma stats for all ofdma users. Usage: echo 32 > /sys/kernel/debug/ieee80211/phyx/ath11k/htt_stats_type cat /sys/kernel/debug/ieee80211/phyx/ath11k/htt_stats 37-ATH11K_DBG_HTT_EXT_PHY_COUNTERS_AND_PHY_STATS: Used to dump the mac and phy txrx counts and phy stats like per chain rssi and ANI level. Usage: echo 37 > /sys/kernel/debug/ieee80211/phyx/ath11k/htt_stats_type cat /sys/kernel/debug/ieee80211/phyx/ath11k/htt_stats Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-00486-QCAHKSWPL_SILICONZ-1 Signed-off-by: Venkateswara Naralasetty Signed-off-by: Jouni Malinen Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20210913223148.208026-6-jouni@codeaurora.org

ath11k: debugfs: move some function declarations to correct header files

2020-09-22T07:41:49Z

Some of the function declarations are for functions in debugfs_htt_stats.c and debugfs_sta.c, move them to corresponding header files. As debugfs_sta.h didn't exist create it. Also in debugfs_htt_stats.h move dunction declarations to the end of the file. No functional changes. Compile tested only. Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1600264523-12939-4-git-send-email-kvalo@codeaurora.org

ath11k: rename debug_htt_stats.[c|h] to debugfs_htt_stats.[c|h]

2020-09-22T07:41:46Z

For consistency with debugfs.c rename debug_htt_stats files and functions to debugfs_htt_stats. No functional changes. Compile tested only. Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1600264523-12939-3-git-send-email-kvalo@codeaurora.org

ath11k: debugfs: use ath11k_debugfs_ prefix

2020-09-22T07:41:44Z

As these functions are now defined in debugfs.c change the prefix to use ath11k_debugfs_ as well. No functional changes. Compile tested only. Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1600264523-12939-2-git-send-email-kvalo@codeaurora.org

ath11k: Add support to reset htt peer stats

2020-05-06T06:15:30Z

This patch add supports to reset the per peer htt stats. Usage: echo 1 > /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/stations//htt_peer_stats_reset While doing so, sync the wmi services between FW and host. Signed-off-by: Ashok Raj Nagarajan Signed-off-by: Tamizh Chelvam Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1588610147-20231-1-git-send-email-tamizhr@codeaurora.org

ath11k: fix resource unavailability for htt stats after peer stats display

2020-05-05T07:37:54Z

htt stats are not working after htt peer stats display and also after htt peer stats reset. Trying to dump htt stats shows "Resource temporarily unavailable". This is because of "ar->debug.htt_stats.stats_req" member is being consecutively used for all htt stats without being reset during the previous usage. Hence assigning NULL to this member after freeing the allocated memory fixes the issue. console logs below: # echo 9 >/sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats_type # cat /sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats_type 9 # cat /sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats cat: can't open '/sys/kernel/debug/ath11k/ipq8074/mac1/htt_stats' : Resource temporarily unavailable Signed-off-by: Sowmiya Sree Elavalagan Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1588592755-10427-1-git-send-email-ssreeela@codeaurora.org

ath11k: Add sta debugfs support to configure ADDBA and DELBA

2020-04-06T16:13:37Z

Add support to test aggregation procedures (addba/addba_resp/delba) manually by adding the required callbacks in sta debugfs files. To enable automatic aggregation in target, echo 0 > /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/ stations/XX:XX:XX:XX:XX:XX/aggr_mode For manual mode, echo 1 > /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/ stations/XX:XX:XX:XX:XX:XX/aggr_mode To send addba response, echo 0 25 > /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/ stations/XX:XX:XX:XX:XX:XX/addba_resp To send addba, echo 1 32 > /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/ stations/XX:XX:XX:XX:XX:XX/addba To send delba, echo 0 1 37 > /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/ stations/XX:XX:XX:XX:XX:XX/delba Signed-off-by: Maharaja Kennadyrajan Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1585213026-28406-1-git-send-email-mkenna@codeaurora.org

ath11k: Adding proper validation before accessing tx_stats

2020-03-18T11:52:42Z

Before dumping tx_stats proper validation was not been taken care of. Due to which we were encountering null pointer dereference(kernel panic). This scenario will arise when a station is getting disconnected and we are changing the STA state by ath11k_mac_op_sta_state and assigning tx_stats as NULL and after this the mac80211 will destroy the debugfs entry from where we are trying to read the stats. If anyone tries to dump tx_stats for that STA in between setting tx_stats to NULL and debugfs file removal without checking the NULL value it will run into a NULL pointer exception. Proceeding with the analysis of "ARM Kernel Panic". The APSS crash happened due to OOPS on CPU 3. Crash Signature : Unable to handle kernel NULL pointer dereference at virtual address 00000360 During the crash, PC points to "ath11k_debug_htt_stats_init+0x16ac/0x1acc [ath11k]" LR points to "ath11k_debug_htt_stats_init+0x1688/0x1acc [ath11k]". The Backtrace obtained is as follows: [] ath11k_debug_htt_stats_init+0x16ac/0x1acc [ath11k] [] do_loop_readv_writev+0x60/0xa4 [] do_readv_writev+0xd8/0x19c [] vfs_readv+0x34/0x48 [] default_file_splice_read+0x1a8/0x2e4 [] do_splice_to+0x78/0x98 [] splice_direct_to_actor+0xb0/0x1a4 [] do_splice_direct+0x84/0xa8 [] do_sendfile+0x160/0x2a4 [] SyS_sendfile64+0xb4/0xc8 Signed-off-by: Pravas Kumar Panda Signed-off-by: Kalle Valo