On 04/04/2014 04:37 AM, Michal Kazior wrote:
Hi, After digging around I've found what seems to be the problem with WMI Tx credit starvation and inability to properly flush Tx in ath10k_flush().
I applied all four, rebooted AP and Station machine with the new kernel (3.14.0-wl-ath+). I had removed my own tx-hang detection hack. It is not working well...though perhaps it is not directly related to your patches...I will do some reboots and try reversing some patches. But, 3.14.0-rc8-wl-ath+ was working mostly OK for me.... It seems my user-space app got hung, probably because rtnl was being held too long while doing admin-down on a bunch of stations. Out of 32 stations, maybe 5 of them managed to come up and get an IP address through DHCP before user-space app hung and log started filling with the errors at the end of the dmesg below. sta218: associated IPv6: ADDRCONF(NETDEV_CHANGE): sta218: link becomes ready sta219: authenticate with 04:f0:21:03:38:99 ath10k: mac vdev 19 beacon_interval 100 ath10k: mac vdev 19 create peer 04:f0:21:03:38:99 ath10k: mac vdev 19 start 04:f0:21:03:38:99 ath10k: mac vdev 19 start center_freq 5180 phymode 11ac-vht80 sta219: send auth to 04:f0:21:03:38:99 (try 1/3) sta219: authenticated sta218: deauthenticating from 04:f0:21:03:38:99 by local choice (Reason: 3=DEAUTH_LEAVING) ath10k: mac flushing peer 04:f0:21:03:38:99 on vdev 18 mgmt tid for unicast mgmt ath10k: mac vdev 18 peer delete 04:f0:21:03:38:99 (sta gone) ath10k: mac vdev 18 stop (disassociated ath10k: mac vdev 18 down ath10k: mac vdev 18 cts_prot 0 ath10k: mac vdev 18 slot_time 1 ath10k: mac vdev 18 preamble 1n sta219: associate with 04:f0:21:03:38:99 (try 1/3) sta219: RX AssocResp from 04:f0:21:03:38:99 (capab=0x1 status=0 aid=22) ath10k: mac vdev 19 dtim_period 2 ath10k: mac vdev 19 slot_time 2 ath10k: mac ht peer 04:f0:21:03:38:99 mcs cnt 24 nss 3 ath10k: mac vht peer 04:f0:21:03:38:99 max_mpdu 65535 flags 0x6003001 ath10k: mac peer 04:f0:21:03:38:99 phymode 11ac-vht80 ath10k: mac vdev 19 up (associated) bssid 04:f0:21:03:38:99 aid 22 sta219: associated IPv6: ADDRCONF(NETDEV_CHANGE): sta219: link becomes ready sta220: authenticate with 04:f0:21:03:38:99 ath10k: mac vdev 20 beacon_interval 100 ath10k: mac vdev 20 create peer 04:f0:21:03:38:99 ath10k: mac vdev 20 start 04:f0:21:03:38:99 ath10k: mac vdev 20 start center_freq 5180 phymode 11ac-vht80 sta220: send auth to 04:f0:21:03:38:99 (try 1/3) sta220: authenticated sta220: associate with 04:f0:21:03:38:99 (try 1/3) sta220: RX AssocResp from 04:f0:21:03:38:99 (capab=0x1 status=0 aid=23) ath10k: mac vdev 20 dtim_period 2 ath10k: mac vdev 20 slot_time 2 ath10k: mac ht peer 04:f0:21:03:38:99 mcs cnt 24 nss 3 ath10k: mac vht peer 04:f0:21:03:38:99 max_mpdu 65535 flags 0x6003001 ath10k: mac peer 04:f0:21:03:38:99 phymode 11ac-vht80 ath10k: mac vdev 20 up (associated) bssid 04:f0:21:03:38:99 aid 23 sta220: associated IPv6: ADDRCONF(NETDEV_CHANGE): sta220: link becomes ready ath10k: Creating vdev id: 21 map: 4292870144 ath10k: mac vdev create 21 (add interface) type 2 subtype 0 ath10k: mac vdev 21 cts_prot 0 ath10k: mac vdev 21 slot_time 1 ath10k: mac vdev 21 preamble 1n IPv6: ADDRCONF(NETDEV_UP): sta221: link is not ready ath10k: mac vdev 21 delete (remove interface) ath10k: peer-unmap-event: unknown peer id 23 ath10k: Creating vdev id: 21 map: 4292870144 ath10k: mac vdev create 21 (add interface) type 2 subtype 0 ath10k: mac vdev 21 cts_prot 0 ath10k: mac vdev 21 slot_time 1 ath10k: mac vdev 21 preamble 1n IPv6: ADDRCONF(NETDEV_UP): sta221: link is not ready sta217: authenticate with 04:f0:21:03:38:99 ath10k: mac vdev 17 beacon_interval 100 ath10k: mac vdev 17 create peer 04:f0:21:03:38:99 ath10k: mac vdev 17 start 04:f0:21:03:38:99 ath10k: mac vdev 17 start center_freq 5180 phymode 11ac-vht80 sta217: send auth to 04:f0:21:03:38:99 (try 1/3) sta217: authenticated sta217: associate with 04:f0:21:03:38:99 (try 1/3) sta217: RX AssocResp from 04:f0:21:03:38:99 (capab=0x1 status=0 aid=20) ath10k: mac vdev 17 dtim_period 2 ath10k: mac vdev 17 slot_time 2 ath10k: mac ht peer 04:f0:21:03:38:99 mcs cnt 24 nss 3 ath10k: mac vht peer 04:f0:21:03:38:99 max_mpdu 65535 flags 0x6003001 ath10k: mac peer 04:f0:21:03:38:99 phymode 11ac-vht80 ath10k: mac vdev 17 up (associated) bssid 04:f0:21:03:38:99 aid 20 sta217: associated IPv6: ADDRCONF(NETDEV_CHANGE): sta217: link becomes ready sta218: authenticate with 04:f0:21:03:38:99 ath10k: mac vdev 18 beacon_interval 100 ath10k: mac vdev 18 create peer 04:f0:21:03:38:99 ath10k: mac vdev 18 start 04:f0:21:03:38:99 ath10k: mac vdev 18 start center_freq 5180 phymode 11ac-vht80 sta218: send auth to 04:f0:21:03:38:99 (try 1/3) ath10k: Creating vdev id: 22 map: 4290772992 ath10k: mac vdev create 22 (add interface) type 2 subtype 0 sta218: authenticated ath10k: mac vdev 22 cts_prot 0 ath10k: mac vdev 22 slot_time 1 ath10k: mac vdev 22 preamble 1n IPv6: ADDRCONF(NETDEV_UP): sta222: link is not ready sta218: associate with 04:f0:21:03:38:99 (try 1/3) sta218: RX AssocResp from 04:f0:21:03:38:99 (capab=0x1 status=0 aid=18) ath10k: mac vdev 18 dtim_period 2 ath10k: mac vdev 18 slot_time 2 ath10k: mac ht peer 04:f0:21:03:38:99 mcs cnt 24 nss 3 ath10k: mac vht peer 04:f0:21:03:38:99 max_mpdu 65535 flags 0x6003001 ath10k: mac peer 04:f0:21:03:38:99 phymode 11ac-vht80 ath10k: mac vdev 18 up (associated) bssid 04:f0:21:03:38:99 aid 18 sta218: associated sta222: authenticate with 04:f0:21:03:38:99 ath10k: mac vdev 22 beacon_interval 100 ath10k: mac vdev 22 create peer 04:f0:21:03:38:99 ath10k: mac vdev 22 start 04:f0:21:03:38:99 ath10k: mac vdev 22 start center_freq 5180 phymode 11ac-vht80 sta222: send auth to 04:f0:21:03:38:99 (try 1/3) ath10k: mac vdev 22 peer delete 04:f0:21:03:38:99 (sta gone) ath10k: mac vdev 22 stop (disassociated ath10k: mac vdev 22 down ath10k: mac vdev 22 delete (remove interface) ath10k: peer-unmap-event: unknown peer id 24 ath10k: Creating vdev id: 22 map: 4290772992 ath10k: mac vdev create 22 (add interface) type 2 subtype 0 ath10k: mac vdev 22 cts_prot 0 ath10k: mac vdev 22 slot_time 1 ath10k: mac vdev 22 preamble 1n IPv6: ADDRCONF(NETDEV_UP): sta222: link is not ready sta221: authenticate with 04:f0:21:03:38:99 ath10k: mac vdev 21 beacon_interval 100 ath10k: mac vdev 21 create peer 04:f0:21:03:38:99 ath10k: mac vdev 21 start 04:f0:21:03:38:99 ath10k: mac vdev 21 start center_freq 5180 phymode 11ac-vht80 sta221: send auth to 04:f0:21:03:38:99 (try 1/3) sta221: authenticated sta221: associate with 04:f0:21:03:38:99 (try 1/3) sta221: RX AssocResp from 04:f0:21:03:38:99 (capab=0x1 status=0 aid=19) ath10k: mac vdev 21 dtim_period 2 ath10k: mac vdev 21 slot_time 2 ath10k: mac ht peer 04:f0:21:03:38:99 mcs cnt 24 nss 3 ath10k: mac vht peer 04:f0:21:03:38:99 max_mpdu 65535 flags 0x6003001 ath10k: mac peer 04:f0:21:03:38:99 phymode 11ac-vht80 ath10k: mac vdev 21 up (associated) bssid 04:f0:21:03:38:99 aid 19 sta221: associated IPv6: ADDRCONF(NETDEV_CHANGE): sta221: link becomes ready sta222: authenticate with 04:f0:21:03:38:99 ath10k: mac vdev 22 beacon_interval 100 ath10k: mac vdev 22 create peer 04:f0:21:03:38:99 ath10k: mac vdev 22 start 04:f0:21:03:38:99 ath10k: mac vdev 22 start center_freq 5180 phymode 11ac-vht80 sta222: send auth to 04:f0:21:03:38:99 (try 1/3) sta222: authenticated sta222: associate with 04:f0:21:03:38:99 (try 1/3) sta222: RX AssocResp from 04:f0:21:03:38:99 (capab=0x1 status=0 aid=24) ath10k: mac vdev 22 dtim_period 2 ath10k: mac vdev 22 slot_time 2 ath10k: mac ht peer 04:f0:21:03:38:99 mcs cnt 24 nss 3 ath10k: mac vht peer 04:f0:21:03:38:99 max_mpdu 65535 flags 0x6003001 ath10k: mac peer 04:f0:21:03:38:99 phymode 11ac-vht80 ath10k: mac vdev 22 up (associated) bssid 04:f0:21:03:38:99 aid 24 sta222: associated IPv6: ADDRCONF(NETDEV_CHANGE): sta222: link becomes ready sta213: deauthenticating from 04:f0:21:03:38:99 by local choice (Reason: 3=DEAUTH_LEAVING) ath10k: mac flushing peer 04:f0:21:03:38:99 on vdev 13 mgmt tid for unicast mgmt ath10k: mac vdev 13 peer delete 04:f0:21:03:38:99 (sta gone) ath10k: mac vdev 13 stop (disassociated ath10k: mac vdev 13 down ath10k: mac vdev 13 cts_prot 0 ath10k: mac vdev 13 slot_time 1 ath10k: failed to set erp slot for vdev 13: -11 ath10k: mac vdev 13 preamble 1n ath10k: failed to set preamble for vdev 13: -11 ath10k: failed to set wmm params: -11 ath10k: failed to set wmm params: -11 ath10k: failed to set wmm params: -11 ath10k: failed to set wmm params: -11 ath10k: mac vdev 13 delete (remove interface) ath10k: failed to delete WMI vdev 13: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 sta219: deauthenticating from 04:f0:21:03:38:99 by local choice (Reason: 3=DEAUTH_LEAVING) ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: mac vdev 19 peer delete 04:f0:21:03:38:99 (sta gone) ath10k: failed to request wmi peer 04:f0:21:03:38:99 on vdev 19 removal: -11 ath10k: removing peer 04:f0:21:03:38:99 on vdev 19 still being mapped in firmware ath10k: mac vdev 19 stop (disassociated ath10k: failed to stop WMI vdev 19: -11 ath10k: mac vdev 19 down ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: mac vdev 19 cts_prot 0 ath10k: failed to recalculate rts/cts prot for vdev 19: -11 ath10k: mac vdev 19 slot_time 1 ath10k: failed to set erp slot for vdev 19: -11 ath10k: mac vdev 19 preamble 1n ath10k: failed to set preamble for vdev 19: -11 ath10k: failed to set wmm params: -11 ath10k: failed to set wmm params: -11 ath10k: failed to set wmm params: -11 ath10k: failed to set wmm params: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: mac vdev 19 delete (remove interface) ath10k: failed to delete WMI vdev 19: -11 ath10k: failed to wait for tx to flush: -110, forcing ath10k: failed to request peer 04:f0:21:03:38:99 on vdev 22 to flush ffffffff: -11 ath10k: failed to flush all peer tids: -11 ath10k: mac vdev 0 peer delete 04:f0:21:03:38:99 (sta gone) ath10k: failed to request wmi peer 04:f0:21:03:38:99 on vdev 0 removal: -11 ath10k: removing peer 04:f0:21:03:38:99 on vdev 0 still being mapped in firmware ath10k: mac vdev 0 stop (disassociated ath10k: failed to stop WMI vdev 0: -11 ath10k: mac vdev 0 down ath10k: mac vdev 0 cts_prot 0 ath10k: failed to recalculate rts/cts prot for vdev 0: -11 ath10k: mac vdev 0 slot_time 1 ath10k: failed to set erp slot for vdev 0: -11 ath10k: mac vdev 0 preamble 1n ath10k: failed to set preamble for vdev 0: -11 ath10k: failed to set wmm params: -11 -- Ben Greear <greearb@xxxxxxxxxxxxxxx> Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx 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