I am on FreeBSD 11.0-CURRENT #2 r297521M: Sun Apr 3 12:30:45 PDT 2016 with latest sys/dev/iwn and I can no longer switch to a new ssid with 'service netif restart'. I have to do 'kldunload if_iwn; kldload if_iwn'. jhb@ suggested to do devctl disable/enable iwn0. I think this should be fixed.
A few observations: 1) if a network/ssid goes away, iwn connects to the next available one without trouble. 2) wpa_cli reassoc - works perfectly as jhb suggested Problem occurs when I start up my phone hotspot (which has higher priority in wpa_supplicant.conf) and try to associate with it via 'service netif restart' as I used to. Actually, after doing 'service netif restart' iwn doesn't associate with anything. Which is the actual bug. # ifconfig -v wlan0 list scan returns nothing. # ifconfig -v wlan0 wlan0: flags=8803<UP,BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500 ether a0:88:b4:f1:65:78 nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> media: IEEE 802.11 Wireless Ethernet autoselect (autoselect) status: no carrier ssid "" channel 1 (2412 MHz 11g) bssid 00:00:00:00:00:00 regdomain 0 country US anywhere -ecm authmode WPA1+WPA2/802.11i -wps -tsn privacy MIXED deftxkey UNDEF powersavemode OFF powersavesleep 100 txpower 11 txpowmax 50.0 -dotd rtsthreshold 2346 fragthreshold 2346 bmiss 10 11a ucast NONE mgmt 6 Mb/s mcast 6 Mb/s maxretry 6 11b ucast NONE mgmt 1 Mb/s mcast 1 Mb/s maxretry 6 11g ucast NONE mgmt 1 Mb/s mcast 1 Mb/s maxretry 6 turboA ucast NONE mgmt 6 Mb/s mcast 6 Mb/s maxretry 6 turboG ucast NONE mgmt 1 Mb/s mcast 1 Mb/s maxretry 6 sturbo ucast NONE mgmt 6 Mb/s mcast 6 Mb/s maxretry 6 11na ucast NONE mgmt 12 MCS mcast 12 MCS maxretry 6 11ng ucast NONE mgmt 2 MCS mcast 2 MCS maxretry 6 half ucast NONE mgmt 3 Mb/s mcast 3 Mb/s maxretry 6 quarter ucast NONE mgmt 1 Mb/s mcast 1 Mb/s maxretry 6 scanvalid 60 -bgscan bgscanintvl 300 bgscanidle 250 roam:11a rssi 7dBm rate 12 Mb/s roam:11b rssi 7dBm rate 1 Mb/s roam:11g rssi 7dBm rate 5 Mb/s roam:turboA rssi 7dBm rate 12 Mb/s roam:turboG rssi 7dBm rate 12 Mb/s roam:sturbo rssi 7dBm rate 12 Mb/s roam:11na rssi 7dBm MCS 1 roam:11ng rssi 7dBm MCS 1 roam:half rssi 7dBm rate 6 Mb/s roam:quarter rssi 7dBm rate 3 Mb/s -pureg protmode CTS ht htcompat ampdu ampdulimit 8k ampdudensity NA -amsdutx amsdurx shortgi htprotmode RTSCTS -puren -smps -rifs wme -burst -dwds roaming MANUAL bintval 0 AC_BE cwmin 4 cwmax 10 aifs 3 txopLimit 0 -acm ack cwmin 4 cwmax 10 aifs 3 txopLimit 0 -acm AC_BK cwmin 4 cwmax 10 aifs 7 txopLimit 0 -acm ack cwmin 4 cwmax 10 aifs 7 txopLimit 0 -acm AC_VI cwmin 3 cwmax 4 aifs 2 txopLimit 94 -acm ack cwmin 3 cwmax 4 aifs 2 txopLimit 94 -acm AC_VO cwmin 2 cwmax 3 aifs 2 txopLimit 47 -acm ack cwmin 2 cwmax 3 aifs 2 txopLimit 47 -acm groups: wlan Sometimes (not always) on 'service netif restart' iwn crashes: ifa_maintain_loopback_route: deletion failed for interface lo0: 48 wlan0: Ethernet address: a0:88:b4:f1:65:78 iwn0: iwn_read_firmware: ucode rev=0x12a80601 iwn0: iwn_intr: fatal firmware error firmware error log: error type = "UNKNOWN" (0x00002776) program counter = 0x00008AD0 source line = 0x00000067 error data = 0x0901008000000002 branch link = 0x00008ABE00008ABE interrupt link = 0x0000D6BE00000000 time = 26954 driver status: tx ring 0: qid=0 cur=0 queued=0 tx ring 1: qid=1 cur=0 queued=0 tx ring 2: qid=2 cur=0 queued=0 tx ring 3: qid=3 cur=0 queued=0 tx ring 4: qid=4 cur=0 queued=0 tx ring 5: qid=5 cur=0 queued=0 tx ring 6: qid=6 cur=0 queued=0 tx ring 7: qid=7 cur=0 queued=0 tx ring 8: qid=8 cur=0 queued=0 tx ring 9: qid=9 cur=3 queued=0 tx ring 10: qid=10 cur=0 queued=0 tx ring 11: qid=11 cur=0 queued=0 tx ring 12: qid=12 cur=0 queued=0 tx ring 13: qid=13 cur=0 queued=0 tx ring 14: qid=14 cur=0 queued=0 tx ring 15: qid=15 cur=0 queued=0 tx ring 16: qid=16 cur=0 queued=0 tx ring 17: qid=17 cur=0 queued=0 tx ring 18: qid=18 cur=0 queued=0 tx ring 19: qid=19 cur=0 queued=0 rx ring: cur=1 iwn0: iwn_panicked: controller panicked, iv_state = 0; restarting iwn0: iwn5000_post_alive: could not configure WiMAX coexistence, error 35 iwn0: iwn_init_locked: could not initialize hardware, error 35 After this, only way to revive iwn is # kldunload if_iwn; kldload if_iwn
Is this still a problem on 13-CURRENT?