Red Hat Bugzilla – Bug 256001
iwlwifi4965, ping cannot work under IBSS mode
Last modified: 2009-06-19 20:42:20 EDT
Description of problem: I tested iwlwifi4965 driver on RHEL5.1 snapshot 3 kernel-2.6.28-41.el5.x86_64. Ping fails under IBSS mode. Version-Release number of selected component (if applicable): The integrated iwlwifi4965 driver is version 1.0.0 How reproducible: Steps to Reproduce: On machine-1, 1.ifconfig wlan0 down 2.iwconfig wlan0 mode ad-hoc 3.ifconfig wlan0 up 4.iwconfig wlan0 essid test channel 6 5.ifconfig wlan0 <IP1> 6.Set up machine-2 as the same steps above, but change to a different IP address, <IP2> 7. On machine-2, ping -I wlan0 <IP1> Actual results: Ping failed, "Destination Host Unreachable". Expected results: Ping cannot work. Additional info:
I'll built a test kernel with the patch Intel thinks will resolve this and have Jane test tonight.
Created attachment 179521 [details] Patch to 1.0.0-1 "hotfix" release which should resolve the bug Provided binary kernel -43 plus this patch to Jane for testing.
I tested the binary kernel -43 w/ patch attachment(id=179521). Ping works under IBSS mode. Here is test log, ===================== [root@hlv-sr ~]# ifconfig wlan0 down [root@hlv-sr ~]# iwconfig wlan0 mode ad-hoc [root@hlv-sr ~]# ifconfig wlan0 up [root@hlv-sr ~]# iwconfig lo no wireless extensions. eth0 no wireless extensions. sit0 no wireless extensions. wmaster0 no wireless extensions. Warning: Driver for device wlan0 recommend version 21 of Wireless Extension, but has been compiled with version 20, therefore some driver features may not be available... wlan0 IEEE 802.11g ESSID:"" Mode:Ad-Hoc Frequency:2.412 GHz Cell: Not-Associated Retry min limit:7 RTS thr:off Fragment thr=2346 B Encryption key:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 [root@hlv-sr ~]# iwlist wlan0 scan |grep Ad-Hoc -C8 -B2 Warning: Driver for device wlan0 recommend version 21 of Wireless Extension, but has been compiled with version 20, therefore some driver features may not be available... Cell 07 - Address: 02:0E:35:2D:70:AF ESSID:"adhoctest" Mode:Ad-Hoc Channel:5 Frequency:2.432 GHz Quality=87/100 Signal level=-46 dBm Noise level=-127 dBm Encryption key:off Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s 48 Mb/s; 54 Mb/s Extra:tsf=0000000045573f4f [root@hlv-sr ~]# iwconfig wlan0 channel 5 [root@hlv-sr ~]# iwconfig wlan0 essid adhoctest [root@hlv-sr ~]# iwconfig lo no wireless extensions. eth0 no wireless extensions. sit0 no wireless extensions. wmaster0 no wireless extensions. Warning: Driver for device wlan0 recommend version 21 of Wireless Extension, but has been compiled with version 20, therefore some driver features may not be available... wlan0 IEEE 802.11g ESSID:"adhoctest" Mode:Ad-Hoc Frequency:2.432 GHz Cell: 02:0E:35:2D:70:AF Retry min limit:7 RTS thr:off Fragment thr=2346 B Encryption key:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 [root@hlv-sr ~]# ifconfig wlan0 192.168.1.67 [root@hlv-sr ~]# ping 192.168.1.66 PING 192.168.1.66 (192.168.1.66) 56(84) bytes of data. 64 bytes from 192.168.1.66: icmp_seq=1 ttl=64 time=16.0 ms 64 bytes from 192.168.1.66: icmp_seq=2 ttl=64 time=10.5 ms 64 bytes from 192.168.1.66: icmp_seq=3 ttl=64 time=1.92 ms 64 bytes from 192.168.1.66: icmp_seq=4 ttl=64 time=3.67 ms 64 bytes from 192.168.1.66: icmp_seq=5 ttl=64 time=2.96 ms 64 bytes from 192.168.1.66: icmp_seq=6 ttl=64 time=29.3 ms --- 192.168.1.66 ping statistics --- 6 packets transmitted, 6 received, 0% packet loss, time 5001ms rtt min/avg/max/mdev = 1.922/10.756/29.361/9.690 ms
Test kernels w/ recent mac80211 and iwl4965 updates available here: http://people.redhat.com/linville/kernels/rhel5/ You will also need updated firmware. The easiest option is probably to install the F-7 package (you will need to use the "--force" option to rpm): http://download.fedora.redhat.com/pub/fedora/linux/updates/7/x86_64/iwl4965-firmware-4.44.1.18-2.noarch.rpm Do these kernels work for you?
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
Thanks for updates. I will have a test and provide result here.
Verified the fix w/ kernel 2.6.18-54.el5.jwltest.45 and the firmware from F-7 package. Ping works under IBSS mode.
Test kernels w/ very up-to-date mac80211/iwl4965 available here: http://people.redhat.com/linville/kernels/rhel5/ YMMV, I have not yet tested them -- please feel free to do so and let me know the results! :-)
I tried the kernel-2.6.18-58.jwltest.47.5 and got some warning messages when installing the kernel rpm. ======================= [root@hlv-sr ~]# rpm -ihv kernel-2.6.18-58.el5.jwltest.47.2.i686.rpm Preparing... ########################################### [100%] 1:kernel ########################################### [100%] WARNING: /lib/modules/2.6.18- 58.el5.jwltest.47.2/kernel/drivers/net/wireless/p54pci.ko needs unknown symbol pci_try_set_mwi WARNING: /lib/modules/2.6.18- 58.el5.jwltest.47.2/kernel/drivers/net/wireless/iwlwifi/iwl4965.ko needs unknown symbol hex_dump_to_buffer WARNING: /lib/modules/2.6.18- 58.el5.jwltest.47.2/kernel/drivers/net/wireless/iwlwifi/iwl4965.ko needs unknown symbol print_hex_dump WARNING: /lib/modules/2.6.18- 58.el5.jwltest.47.2/kernel/drivers/net/wireless/iwlwifi/iwl3945.ko needs unknown symbol hex_dump_to_buffer WARNING: /lib/modules/2.6.18- 58.el5.jwltest.47.2/kernel/drivers/net/wireless/iwlwifi/iwl3945.ko needs unknown symbol print_hex_dump After boot up from the installed kernel, failed to load iwl4965 driver. ================== [root@hlv-sr ~]# modprobe iwl4965 FATAL: Error inserting iwl4965 (/lib/modules/2.6.18- 58.el5.jwltest.47.2/kernel/drivers/net/wireless/iwlwifi/iwl4965.ko): Unknown symbol in module, or unknown parameter (see dmesg) Dmesg also shows the unknown symbol for iwl4965 driver.
The error messages in comment 12 are from jwltest.47.2. Please use jwltest.47.5 (or later).
Tested jwltest.47.5. The IBSS mode can work well on it.
in 2.6.18-66.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5
Greetings Red Hat Partner, A fix for this issue should be included in the latest packages contained in RHEL5.2-Snapshot1--available now on partners.redhat.com. Please test and confirm that your issue is fixed. After you (Red Hat Partner) have verified that this issue has been addressed, please perform the following: 1) Change the *status* of this bug to VERIFIED. 2) Add *keyword* of PartnerVerified (leaving the existing keywords unmodified) If this issue is not fixed, please add a comment describing the most recent symptoms of the problem you are having and change the status of the bug to ASSIGNED. If you are receiving this message in Issue Tracker, please reply with a message to Issue Tracker about your results and I will update bugzilla for you. If you need assistance accessing ftp://partners.redhat.com, please contact your Partner Manager. Thank you
Greetings Red Hat Partner, A fix for this issue should be included in the latest packages contained in RHEL5.2-Snapshot3--available now on partners.redhat.com. Please test and confirm that your issue is fixed. After you (Red Hat Partner) have verified that this issue has been addressed, please perform the following: 1) Change the *status* of this bug to VERIFIED. 2) Add *keyword* of PartnerVerified (leaving the existing keywords unmodified) If this issue is not fixed, please add a comment describing the most recent symptoms of the problem you are having and change the status of the bug to ASSIGNED. If you are receiving this message in Issue Tracker, please reply with a message to Issue Tracker about your results and I will update bugzilla for you. If you need assistance accessing ftp://partners.redhat.com, please contact your Partner Manager. Thank you
Greetings Red Hat Partner, A fix for this issue should be included in the latest packages contained in RHEL5.2-Snapshot4--available now on partners.redhat.com. Please test and confirm that your issue is fixed. After you (Red Hat Partner) have verified that this issue has been addressed, please perform the following: 1) Change the *status* of this bug to VERIFIED. 2) Add *keyword* of PartnerVerified (leaving the existing keywords unmodified) If this issue is not fixed, please add a comment describing the most recent symptoms of the problem you are having and change the status of the bug to ASSIGNED. If you are receiving this message in Issue Tracker, please reply with a message to Issue Tracker about your results and I will update bugzilla for you. If you need assistance accessing ftp://partners.redhat.com, please contact your Partner Manager. Thank you
Verified this bug on RHEL5.2-sp4.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2008-0314.html