[PATCH 2/2] ath10k: add per peer tx stats support for 10.2.4

[Maxime Bizon]

On Fri, 2017-12-01 at 19:18 +0530, akolli at codeaurora.org wrote:

> Hope CONFIG_MAC80211_DEBUGFS is enabled in your build.

it wasn't and IMHO it's confusing because tx rate is filled by the other
drivers without it.

I now have the following warning:

[   96.174967] ------------[ cut here ]------------
[   96.179640] WARNING: CPU: 0 PID: 609 at net/wireless/util.c:1254 cfg80211_calculate_bitrate+0x174/0x220
[   96.189538] invalid rate bw=1, mcs=9, nss=2
[   96.219736] CPU: 0 PID: 609 Comm: hostapd Not tainted 4.14.3-00381-gec9756b0f64d #28
[   96.227910] Hardware name: Marvell Kirkwood (Flattened Device Tree)
[   96.235450] [<80010124>] (unwind_backtrace) from [<8000d9ec>] (show_stack+0x10/0x14)
[   96.247180] [<8000d9ec>] (show_stack) from [<8002016c>] (__warn+0xdc/0xf8)
[   96.254243] [<8002016c>] (__warn) from [<800201bc>] (warn_slowpath_fmt+0x34/0x44)
[   96.262016] [<800201bc>] (warn_slowpath_fmt) from [<8064dfdc>] (cfg80211_calculate_bitrate+0x174/0x220)
[   96.272652] [<8064dfdc>] (cfg80211_calculate_bitrate) from [<806692d4>] (nl80211_put_sta_rate+0x44/0x1dc)
[   96.282509] [<806692d4>] (nl80211_put_sta_rate) from [<8066001c>] (nl80211_send_station+0x388/0xaf0)
[   96.292261] [<8066001c>] (nl80211_send_station) from [<8066082c>] (nl80211_get_station+0xa8/0xec)
[   96.304166] [<8066082c>] (nl80211_get_station) from [<80509c20>] (genl_rcv_msg+0x2dc/0x34c)
[   96.313324] [<80509c20>] (genl_rcv_msg) from [<8050890c>] (netlink_rcv_skb+0x84/0xdc)
[   96.321880] [<8050890c>] (netlink_rcv_skb) from [<805093c0>] (genl_rcv+0x20/0x34)
[   96.329668] [<805093c0>] (genl_rcv) from [<80508188>] (netlink_unicast+0x12c/0x1e0)
[   96.338408] [<80508188>] (netlink_unicast) from [<805085d8>] (netlink_sendmsg+0x2e0/0x304)
[   96.350736] [<805085d8>] (netlink_sendmsg) from [<804b5f9c>] (sock_sendmsg+0x14/0x24)
[   96.358656] [<804b5f9c>] (sock_sendmsg) from [<804b66e8>] (___sys_sendmsg+0x1c8/0x20c)
[   96.367093] [<804b66e8>] (___sys_sendmsg) from [<804b739c>] (__sys_sendmsg+0x40/0x64)
[   96.375276] [<804b739c>] (__sys_sendmsg) from [<8000a3e0>] (ret_fast_syscall+0x0/0x44)
[   96.383455] ---[ end trace da8257d6a850e91a ]---

# iw dev wlan1 station dump
Station e4:42:a6:24:c8:95 (on wlan1)
	inactive time:	550 ms
	rx bytes:	41217
	rx packets:	152
	tx bytes:	49397
	tx packets:	107
	tx retries:	0
	tx failed:	1
	rx drop misc:	0
	signal:  	-62 [-66, -65, -83] dBm
	signal avg:	-61 [-65, -65, -78] dBm
	tx bitrate:	 VHT-MCS 9 short GI VHT-NSS 2
	rx bitrate:	360.0 MBit/s VHT-MCS 8 40MHz short GI VHT-NSS 2
	rx duration:	0 us
	authorized:	yes
	authenticated:	yes
	associated:	yes
	preamble:	long
	WMM/WME:	yes
	MFP:		no
	TDLS peer:	no
	DTIM period:	2
	beacon interval:96
	short slot time:yes
	connected time:	5 seconds

Thanks

-- 
Maxime