[Click] Issue in kernel-level click

Ashok Anand ashok.anand at gmail.com
Thu Aug 16 23:40:41 EDT 2012 

Hi,

I am using a following configuration for kernel-level click, click-2.0.1

oqueue :: Queue(1000);
th :: ToHost;
FromDevice(eth2)
-> c :: Classifier(12/0800, 12/0806 20/0002, -)
-> Strip(14)
-> CheckIPHeader2
-> MarkIPHeader(0)
-> SetIPAddress(10.1.1.3)
-> aq::ARPQuerier(10.1.1.4, eth2)
-> oqueue

c[1] -> t::Tee -> [1]aq;
t[1] -> th
c[2] -> th

oqueue -> ToDevice(eth2);

10.1.1.4 is the ip-address of the machine where it is running, eth2 is the
interface, and i am sending packet to 10.1.1.3.

The configuration seems to work fine, except that i get very low speed. I
find in dmesg that there is constantly some warning message being thrown.
Any thoughts on what could be going wrong?

[688191.001209] ------------[ cut here ]------------
[688191.001215] WARNING: at
/build/buildd-linux-2.6_2.6.32-45-amd64-FcX7RM/linux-2.6-2.6.32/debian/build/source_amd64_none/net/core/dev.c:1582
skb_gso_segment+0x109/0x263()
[688191.001220] Hardware name: HP Z800 Workstation
[688191.001222] ixgbe: caps=(0x331cbb3, 0x0) len=2948 data_len=0 ip_summed=1
[688191.001225] Modules linked in: click ixgbe proclikefs cn autofs4 nfsd
exportfs nfs lockd fscache nfs_acl auth_rpcgss sunrpc bridge stp loop
firewire_sbp2 snd_hda_codec_realtek snd_hda_intel snd_hda_codec wmi
snd_hwdep snd_pcm nouveau snd_timer ttm snd drm_kms_helper drm i2c_algo_bit
i2c_core soundcore snd_page_alloc evdev psmouse pcspkr serio_raw processor
button ext4 mbcache jbd2 crc16 dm_mod nbd usbhid hid sg sr_mod sd_mod cdrom
crc_t10dif mptsas uhci_hcd mptscsih mptbase firewire_ohci ahci
scsi_transport_sas libata scsi_mod firewire_core crc_itu_t tg3 libphy
ehci_hcd floppy thermal usbcore nls_base thermal_sys dca [last unloaded:
click]
[688191.001450] Pid: 20474, comm: kclick Tainted: G        W
 2.6.32-5-amd64 #1
[688191.001471] Call Trace:
[688191.001482]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.001514]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.001541]  [<ffffffff8104df40>] ? warn_slowpath_common+0x77/0xa3
[688191.001551]  [<ffffffff8104dfc8>] ? warn_slowpath_fmt+0x51/0x59
[688191.001572]  [<ffffffff810114ce>] ? common_interrupt+0xe/0x13
[688191.001581]  [<ffffffff8119363e>] ? strncpy+0x9/0x1e
[688191.001598]  [<ffffffffa0023238>] ? ixgbe_get_drvinfo+0x78/0xd0 [ixgbe]
[688191.001619]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.001633]  [<ffffffff8125091b>] ? dev_hard_start_xmit+0x1b0/0x2db
[688191.001647]  [<ffffffff8126392c>] ? sch_direct_xmit+0x58/0x14c
[688191.001669]  [<ffffffff81250d99>] ? dev_queue_xmit+0x252/0x38d
[688191.001738]  [<ffffffffa080f3f0>] ?
_ZN8ToDevice12queue_packetEP6PacketP12netdev_queue+0x110/0x1d0 [click]
[688191.001828]  [<ffffffffa080f5c5>] ?
_ZN8ToDevice8run_taskEP4Task+0x115/0x250 [click]
[688191.001910]  [<ffffffffa080ab17>] ?
_ZN10FromDevice8run_taskEP4Task+0x97/0xf0 [click]
[688191.001974]  [<ffffffffa07b9a8d>] ?
_ZN12RouterThread6driverEv+0x38d/0x580 [click]
[688191.002051]  [<ffffffffa0851fc0>] ? _ZL11click_schedPv+0x160/0x250
[click]
[688191.002087]  [<ffffffff810482db>] ? finish_task_switch+0x88/0xaf
[688191.002099]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[688191.002144]  [<ffffffffa0851e60>] ? _ZL11click_schedPv+0x0/0x250 [click]
[688191.002178]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[688191.002198] ---[ end trace 1b77e8b33d8320fb ]---
[688191.002243] ------------[ cut here ]------------
[688191.002247] WARNING: at
/build/buildd-linux-2.6_2.6.32-45-amd64-FcX7RM/linux-2.6-2.6.32/debian/build/source_amd64_none/net/core/dev.c:1582
skb_gso_segment+0x109/0x263()
[688191.002252] Hardware name: HP Z800 Workstation
[688191.002258] ixgbe: caps=(0x331cbb3, 0x0) len=2948 data_len=0 ip_summed=1
[688191.002265] Modules linked in: click ixgbe proclikefs cn autofs4 nfsd
exportfs nfs lockd fscache nfs_acl auth_rpcgss sunrpc bridge stp loop
firewire_sbp2 snd_hda_codec_realtek snd_hda_intel snd_hda_codec wmi
snd_hwdep snd_pcm nouveau snd_timer ttm snd drm_kms_helper drm i2c_algo_bit
i2c_core soundcore snd_page_alloc evdev psmouse pcspkr serio_raw processor
button ext4 mbcache jbd2 crc16 dm_mod nbd usbhid hid sg sr_mod sd_mod cdrom
crc_t10dif mptsas uhci_hcd mptscsih mptbase firewire_ohci ahci
scsi_transport_sas libata scsi_mod firewire_core crc_itu_t tg3 libphy
ehci_hcd floppy thermal usbcore nls_base thermal_sys dca [last unloaded:
click]
[688191.002486] Pid: 20474, comm: kclick Tainted: G        W
 2.6.32-5-amd64 #1
[688191.002492] Call Trace:
[688191.002499]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.002509]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.002533]  [<ffffffff8104df40>] ? warn_slowpath_common+0x77/0xa3
[688191.002562]  [<ffffffff8104dfc8>] ? warn_slowpath_fmt+0x51/0x59
[688191.002589]  [<ffffffff810114ce>] ? common_interrupt+0xe/0x13
[688191.002611]  [<ffffffff8119363e>] ? strncpy+0x9/0x1e
[688191.002642]  [<ffffffffa0023238>] ? ixgbe_get_drvinfo+0x78/0xd0 [ixgbe]
[688191.002657]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.002687]  [<ffffffff8125091b>] ? dev_hard_start_xmit+0x1b0/0x2db
[688191.002710]  [<ffffffff8126392c>] ? sch_direct_xmit+0x58/0x14c
[688191.002728]  [<ffffffff81250d99>] ? dev_queue_xmit+0x252/0x38d
[688191.002795]  [<ffffffffa080f3f0>] ?
_ZN8ToDevice12queue_packetEP6PacketP12netdev_queue+0x110/0x1d0 [click]
[688191.002870]  [<ffffffffa080f5c5>] ?
_ZN8ToDevice8run_taskEP4Task+0x115/0x250 [click]
[688191.002957]  [<ffffffffa080ab17>] ?
_ZN10FromDevice8run_taskEP4Task+0x97/0xf0 [click]
[688191.003018]  [<ffffffffa07b9a8d>] ?
_ZN12RouterThread6driverEv+0x38d/0x580 [click]
[688191.003095]  [<ffffffffa0851fc0>] ? _ZL11click_schedPv+0x160/0x250
[click]
[688191.003130]  [<ffffffff810482db>] ? finish_task_switch+0x88/0xaf
[688191.003147]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[688191.003199]  [<ffffffffa0851e60>] ? _ZL11click_schedPv+0x0/0x250 [click]
[688191.003230]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[688191.003250] ---[ end trace 1b77e8b33d8320fc ]---
[688191.003290] ------------[ cut here ]------------
[688191.003295] WARNING: at
/build/buildd-linux-2.6_2.6.32-45-amd64-FcX7RM/linux-2.6-2.6.32/debian/build/source_amd64_none/net/core/dev.c:1582
skb_gso_segment+0x109/0x263()
[688191.003300] Hardware name: HP Z800 Workstation
[688191.003304] ixgbe: caps=(0x331cbb3, 0x0) len=14532 data_len=0
ip_summed=1
[688191.003308] Modules linked in: click ixgbe proclikefs cn autofs4 nfsd
exportfs nfs lockd fscache nfs_acl auth_rpcgss sunrpc bridge stp loop
firewire_sbp2 snd_hda_codec_realtek snd_hda_intel snd_hda_codec wmi
snd_hwdep snd_pcm nouveau snd_timer ttm snd drm_kms_helper drm i2c_algo_bit
i2c_core soundcore snd_page_alloc evdev psmouse pcspkr serio_raw processor
button ext4 mbcache jbd2 crc16 dm_mod nbd usbhid hid sg sr_mod sd_mod cdrom
crc_t10dif mptsas uhci_hcd mptscsih mptbase firewire_ohci ahci
scsi_transport_sas libata scsi_mod firewire_core crc_itu_t tg3 libphy
ehci_hcd floppy thermal usbcore nls_base thermal_sys dca [last unloaded:
click]
[688191.003545] Pid: 20474, comm: kclick Tainted: G        W
 2.6.32-5-amd64 #1
[688191.003568] Call Trace:
[688191.003584]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.003616]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.003644]  [<ffffffff8104df40>] ? warn_slowpath_common+0x77/0xa3
[688191.003667]  [<ffffffff8104dfc8>] ? warn_slowpath_fmt+0x51/0x59
[688191.003694]  [<ffffffff810114ce>] ? common_interrupt+0xe/0x13
[688191.003721]  [<ffffffff8119363e>] ? strncpy+0x9/0x1e
[688191.003752]  [<ffffffffa0023238>] ? ixgbe_get_drvinfo+0x78/0xd0 [ixgbe]
[688191.003782]  [<ffffffff81250611>] ? skb_gso_segment+0x109/0x263
[688191.003807]  [<ffffffff8125091b>] ? dev_hard_start_xmit+0x1b0/0x2db
[688191.003839]  [<ffffffff8126392c>] ? sch_direct_xmit+0x58/0x14c
[688191.003865]  [<ffffffff81250d99>] ? dev_queue_xmit+0x252/0x38d
[688191.003935]  [<ffffffffa080f3f0>] ?
_ZN8ToDevice12queue_packetEP6PacketP12netdev_queue+0x110/0x1d0 [click]
[688191.004018]  [<ffffffffa080f5c5>] ?
_ZN8ToDevice8run_taskEP4Task+0x115/0x250 [click]
[688191.004099]  [<ffffffffa080ab17>] ?
_ZN10FromDevice8run_taskEP4Task+0x97/0xf0 [click]
[688191.004166]  [<ffffffffa07b9a8d>] ?
_ZN12RouterThread6driverEv+0x38d/0x580 [click]
[688191.004240]  [<ffffffffa0851fc0>] ? _ZL11click_schedPv+0x160/0x250
[click]
[688191.004276]  [<ffffffff810482db>] ? finish_task_switch+0x88/0xaf
[688191.004297]  [<ffffffff81011baa>] ? child_rip+0xa/0x20
[688191.004355]  [<ffffffffa0851e60>] ? _ZL11click_schedPv+0x0/0x250 [click]
[688191.004373]  [<ffffffff81011ba0>] ? child_rip+0x0/0x20
[688191.004374] ---[ end trace 1b77e8b33d8320fd ]---


Regards,
Ashok

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