[OpenWrt-Devel] ag71xx packet loss on AR9342 rev 3 / Zyxel NWA1123-AC

Christian Schöbel scoe at brg19.at
Tue May 1 18:03:28 EDT 2018


Hi!

I am trying to make OpenWrt work on ZyXEL NWA1123-AC, I have created  
the entry on the OpenWrt toh page in 2015:

https://openwrt.org/toh/zyxel/nwa1123-ac

The corresponding forum is:

https://forum.openwrt.org/viewtopic.php?id=56608

I am currently focusing on the LAN part. I fetched OpenWrt  
r6796-56ae9f9 and compiled it. Using the board parameter DB120 the LAN  
interface somehow works, but with strange packet loss. I realized this  
when I tried pinging from both sides:

OpenWrt -> PC: ~22% packet loss
PC -> OpenWrt: ~85% packet loss

I monitored the direction OpenWrt -> PC with wireshark: if a loss  
happens, there is no ICMP echo REQUEST packet on the network, so the  
problem seems to be with the TX on the OpenWrt side.

For the other direction PC -> OpenWrt I used the output from ifconfig:  
if a loss happens, indeed the RX and TX byte values increase, but  
there is no ICMP echo REPLY packet from OpenWrt on the network.


The driver used is the ag71xx. I am not sure if the problem is in the  
driver for the built-in switch or for the LAN PHY. Perhaps these lines  
from the kernel boot messages will be helpful (see the full output  
below):

[    0.978637] libphy: Fixed MDIO Bus: probed
[    1.002134] libphy: ag71xx_mdio: probed
[    1.011246] libphy: ag71xx_mdio: probed
[    1.745154] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00  
[uid=004dd072, driver=Atheros 8035 ethernet]
[    1.756139] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RGMII
[    2.386369] ag71xx-mdio.1: Found an AR934X built-in switch
[    2.438864] eth1: Atheros AG71xx at 0xba000000, irq 5, mode:GMII

Can you tell me how I can enable driver debugging? I'd guess there  
would be some helpful error messages.

Any other suggestions are gratefully welcomed too!

Thanks in advance!

Cheers,
Christian


Full output from dmesg below:
[    0.000000] Linux version 4.9.96 (chr at charlie) (gcc version 7.3.0  
(OpenWrt GCC 7.3.0 r6796-56ae9f9) ) #0 Mon Apr 30 08:12:55 2018
[    0.000000] MyLoader: sysp=8829cc2d, boardp=82234a80, parts=06091402
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 0001974c (MIPS 74Kc)
[    0.000000] SoC: Atheros AR9342 rev 3
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] User-defined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases,  
linesize 32 bytes
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Initmem setup node 0 [mem  
0x0000000000000000-0x0000000003ffffff]
[    0.000000] On node 0 totalpages: 16384
[    0.000000] free_area_init_node: node 0, pgdat 80463dd4,  
node_mem_map 81000020
[    0.000000]   Normal zone: 128 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 16384 pages, LIFO batch:3
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.   
Total pages: 16256
[    0.000000] Kernel command line: board=DB120 console=ttyS0,115200  
root=31:02 rootfstype=jffs2 init=/sbin/init  
mtdparts=spi0.0:256k(u-boot),64k(u-boot-env),8192k(rootfs),960k(uImage),6528k(reserve),256k(config),64k(mib0),64k(ART) mem=64M rootfstype=squashfs  
noinitrd
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Writing ErrCtl register=00000000
[    0.000000] Readback ErrCtl register=00000000
[    0.000000] Memory: 59896K/65536K available (3153K kernel code,  
170K rwdata, 792K rodata, 292K init, 213K bss, 5640K reserved, 0K  
cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS:51
[    0.000000] Clocks: CPU:560.000MHz, DDR:400.000MHz, AHB:200.000MHz,  
Ref:40.000MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles:  
0xffffffff, max_idle_ns: 6825930166 ns
[    0.000010] sched_clock: 32 bits at 280MHz, resolution 3ns, wraps  
every 7669584382ns
[    0.008332] Calibrating delay loop... 278.93 BogoMIPS (lpj=1394688)
[    0.081153] pid_max: default: 32768 minimum: 301
[    0.086190] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.093245] Mountpoint-cache hash table entries: 1024 (order: 0,  
4096 bytes)
[    0.103874] clocksource: jiffies: mask: 0xffffffff max_cycles:  
0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.114383] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.121555] NET: Registered protocol family 16
[    0.128120] MIPS: machine is Atheros DB120 reference board
[    0.141935] registering PCI controller with io_map_base unset
[    0.388417] ar71xx: using random MAC address for eth1
[    0.643595] PCI host bridge to bus 0000:00
[    0.647980] pci_bus 0000:00: root bus resource [mem 0x10000000-0x13ffffff]
[    0.655351] pci_bus 0000:00: root bus resource [io  0x0000]
[    0.661281] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[    0.668518] pci_bus 0000:00: No busn resource found for root bus,  
will use [bus 00-ff]
[    0.676981] pci 0000:00:00.0: [168c:003c] type 00 class 0x028000
[    0.676993] pci 0000:00:00.0: invalid calibration data
[    0.682500] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x001fffff 64bit]
[    0.682555] pci 0000:00:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[    0.682638] pci 0000:00:00.0: supports D1 D2
[    0.682649] pci 0000:00:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    0.682907] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
[    0.682941] pci 0000:00:00.0: BAR 0: assigned [mem  
0x10000000-0x101fffff 64bit]
[    0.690743] pci 0000:00:00.0: BAR 6: assigned [mem  
0x10200000-0x1020ffff pref]
[    0.698478] pci 0000:00:00.0: using irq 40 for pin 1
[    0.704591] clocksource: Switched to clocksource MIPS
[    0.711252] NET: Registered protocol family 2
[    0.716854] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.724285] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[    0.731116] TCP: Hash tables configured (established 1024 bind 1024)
[    0.737988] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.744223] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.751232] NET: Registered protocol family 1
[    0.755961] PCI: CLS 0 bytes, default 32
[    0.761263] Crashlog allocated RAM at address 0x3f00000
[    0.768029] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    0.782617] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.788874] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME)  
(CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.809363] io scheduler noop registered
[    0.813543] io scheduler deadline registered (default)
[    0.819509] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    0.826811] console [ttyS0] disabled
[    0.850702] serial8250.0: ttyS0 at MMIO 0x18020000 (irq = 11,  
base_baud = 2500000) is a 16550A
[    0.859906] console [ttyS0] enabled
[    0.867327] bootconsole [early0] disabled
[    0.879683] m25p80 spi0.0: found mx25l12805d, expected m25p80
[    0.886298] m25p80 spi0.0: mx25l12805d (16384 Kbytes)
[    0.891469] 8 cmdlinepart partitions found on MTD device spi0.0
[    0.897524] Creating 8 MTD partitions on "spi0.0":
[    0.902397] 0x000000000000-0x000000040000 : "u-boot"
[    0.909196] 0x000000040000-0x000000050000 : "u-boot-env"
[    0.916540] 0x000000050000-0x000000850000 : "rootfs"
[    0.923402] mtd: device 2 (rootfs) set to be root filesystem
[    0.929268] 1 squashfs-split partitions found on MTD device rootfs
[    0.935565] 0x0000002a0000-0x000000850000 : "rootfs_data"
[    0.942922] 0x000000850000-0x000000940000 : "uImage"
[    0.949901] 0x000000940000-0x000000fa0000 : "reserve"
[    0.956997] 0x000000fa0000-0x000000fe0000 : "config"
[    0.963926] 0x000000fe0000-0x000000ff0000 : "mib0"
[    0.970753] 0x000000ff0000-0x000001000000 : "ART"
[    0.978637] libphy: Fixed MDIO Bus: probed
[    1.002134] libphy: ag71xx_mdio: probed
[    1.011246] libphy: ag71xx_mdio: probed
[    1.745154] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.0:00  
[uid=004dd072, driver=Atheros 8035 ethernet]
[    1.756139] eth0: Atheros AG71xx at 0xb9000000, irq 4, mode:RGMII
[    2.386369] ag71xx-mdio.1: Found an AR934X built-in switch
[    2.438864] eth1: Atheros AG71xx at 0xba000000, irq 5, mode:GMII
[    2.447009] NET: Registered protocol family 10
[    2.455859] NET: Registered protocol family 17
[    2.460556] 8021q: 802.1Q VLAN Support v1.8
[    2.471583] VFS: Mounted root (squashfs filesystem) readonly on  
device 31:2.
[    2.480760] Freeing unused kernel memory: 292K
[    2.485313] This architecture does not have kernel memory protection.
[    2.564606] random: fast init done
[    3.110325] init: Console is alive
[    3.114044] init: - watchdog -
[    4.253749] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    4.312917] usbcore: registered new interface driver usbfs
[    4.318650] usbcore: registered new interface driver hub
[    4.324160] usbcore: registered new device driver usb
[    4.335699] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    4.352726] SCSI subsystem initialized
[    4.362330] ehci-platform: EHCI generic platform driver
[    4.372986] usbcore: registered new interface driver usb-storage
[    4.379844] kmodloader: done loading kernel modules from  
/etc/modules-boot.d/*
[    4.389826] init: - preinit -
[    5.635311] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    5.665309] random: procd: uninitialized urandom read (4 bytes read)
[    8.756059] eth0: link up (1000Mbps/Full duplex)
[    8.760789] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[    9.010477] jffs2: notice: (392) jffs2_build_xattr_subsystem:  
complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan)  
and 0 of xref (0 dead, 0 orphan) found.
[    9.027760] mount_root: switching to jffs2 overlay
[    9.067426] urandom-seed: Seeding with /etc/urandom.seed
[    9.205570] eth0: link down
[    9.222064] procd: - early -
[    9.225587] procd: - watchdog -
[    9.853993] procd: - watchdog -
[    9.857556] procd: - ubus -
[    9.899720] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.937888] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.944968] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.951473] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.958602] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.965191] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.971864] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.978557] random: ubusd: uninitialized urandom read (4 bytes read)
[    9.985488] procd: - init -
[   10.429170] kmodloader: loading kernel modules from /etc/modules.d/*
[   10.467320] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   10.487063] Loading modules backported from Linux version  
wt-2017-11-01-0-gfe248fc2c180
[   10.495259] Backport generated by backports.git v4.14-rc2-1-31-g86cf0e5d
[   10.505980] ip_tables: (C) 2000-2006 Netfilter Core Team
[   10.522018] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[   10.595014] xt_time: kernel timezone is -0000
[   10.827310] PPP generic driver version 2.4.2
[   10.834508] NET: Registered protocol family 24
[   10.870701] PCI: Enabling device 0000:00:00.0 (0000 -> 0002)
[   10.878784] ath10k_pci 0000:00:00.0: pci irq legacy oper_irq_mode 1  
irq_mode 0 reset_mode 0
[   11.159341] ath10k_pci 0000:00:00.0: Direct firmware load for  
ath10k/pre-cal-pci-0000:00:00.0.bin failed with error -2
[   11.170253] ath10k_pci 0000:00:00.0: Falling back to user helper
[   11.401627] firmware ath10k!pre-cal-pci-0000:00:00.0.bin:  
firmware_loading_store: map pages failed
[   11.411106] ath10k_pci 0000:00:00.0: Direct firmware load for  
ath10k/cal-pci-0000:00:00.0.bin failed with error -2
[   11.421658] ath10k_pci 0000:00:00.0: Falling back to user helper
[   11.603674] firmware ath10k!cal-pci-0000:00:00.0.bin:  
firmware_loading_store: map pages failed
[   11.612941] ath10k_pci 0000:00:00.0: Direct firmware load for  
ath10k/QCA988X/hw2.0/firmware-6.bin failed with error -2
[   11.623854] ath10k_pci 0000:00:00.0: Falling back to user helper
[   11.804295] firmware ath10k!QCA988X!hw2.0!firmware-6.bin:  
firmware_loading_store: map pages failed
[   11.820634] ath10k_pci 0000:00:00.0: qca988x hw2.0 target  
0x4100016c chip_id 0x043222ff sub 0000:0000
[   11.830050] ath10k_pci 0000:00:00.0: kconfig debug 0 debugfs 1  
tracing 0 dfs 1 testmode 1
[   11.844679] ath10k_pci 0000:00:00.0: firmware ver 10.2.4-1.0-00033  
api 5 features no-p2p,raw-mode,mfp,allows-mesh-bcast crc32 c41417d0
[   11.946617] ath10k_pci 0000:00:00.0: Direct firmware load for  
ath10k/QCA988X/hw2.0/board-2.bin failed with error -2
[   11.957266] ath10k_pci 0000:00:00.0: Falling back to user helper
[   12.069974] firmware ath10k!QCA988X!hw2.0!board-2.bin:  
firmware_loading_store: map pages failed
[   12.104921] ath10k_pci 0000:00:00.0: board_file api 1 bmi_id N/A  
crc32 bebc7c08
[   13.288624] ath10k_pci 0000:00:00.0: htt-ver 2.1 wmi-op 5 htt-op 2  
cal otp max-sta 128 raw 0 hwcrypto 1
[   13.426793] ath: EEPROM regdomain: 0x0
[   13.426803] ath: EEPROM indicates default country code should be used
[   13.426807] ath: doing EEPROM country->regdmn map search
[   13.426822] ath: country maps to regdmn code: 0x3a
[   13.426828] ath: Country alpha2 being used: US
[   13.426832] ath: Regpair used: 0x3a
[   13.596715] ath: EEPROM regdomain: 0x0
[   13.596725] ath: EEPROM indicates default country code should be used
[   13.596729] ath: doing EEPROM country->regdmn map search
[   13.596746] ath: country maps to regdmn code: 0x3a
[   13.596752] ath: Country alpha2 being used: US
[   13.596756] ath: Regpair used: 0x3a
[   13.610410] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[   13.615187] ieee80211 phy1: Atheros AR9340 Rev:3 mem=0xb8100000, irq=47
[   13.626660] kmodloader: done loading kernel modules from /etc/modules.d/*
[   15.020830] random: jshn: uninitialized urandom read (4 bytes read)
[   22.479102] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   24.596146] eth0: link up (1000Mbps/Full duplex)
[   24.600888] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[  129.914639] random: crng init done
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