QLogic 10 Gigabit Converged Network Adapter driver version qlge-1.00.00.31 for SUSE Linux Enterprise Server 11 (SLES 11) - IBM System x

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Change history

Severity: Suggested

QLogic 10 Gigabit Converged Network Adapter driver for SUSE Linux Enterprise Server 11 (SLES 11)

Version: qlge-1.00.00.31

This is NIC driver release version 1.00.00.31

Changes

The following changes have been made to the Converged Network Adapter Networking Driver Update for Linux Kernel 2.6.x:

• Enabled ethtool WoL support
• Fixed ethtool loopback test hang
• Fixed stat counter
  

Hardware Support

• QLE8142 PCI-Express to 10 Gigabit Fibre Channel over Ethernet Converged Network Adapter
• QMI8142 PCI-Express to 10 Gigabit Fibre Channel over Ethernet Converged Network Adapter

Operating System Support

These drivers work with the following Linux kernel 2.6.x distributions

• Novell SUSE Linux Enterprise Server 11 (SLES 11)
  

Software Components

• Driver 1.00.00.31 for SLES 11
  

Fixes and Enhancements:

• Fixed issue where "FC link not coming up after cable pull, only when QLGE module has been loaded."
  

Known Issues

The following known issues can be observed in the Converged Network Adapter Networking Driver Update for Linux Kernel 2.6.x:

• Driver Compilation
  • When trying to compile the driver by running make install, the following error can occur:
    "Linux kernel source not configured - missing version.h"
  • To resolve this issue, create the version.h file by going to the Linux source tree and entering the following command:
    make include/linux/version.h
    
    
• Jumbo Frames System Requirement
  • Memory allocation failures have been observed on Linux systems that are running Jumbo frames with 64 MB of system memory or less. If you are using Jumbo frames, your system might require more than the advertised minimum requirement of 64 MB of system memory.
    
    
• Performance Degradation with Jumbo Frames
  • Degradation in throughput performance may be observed in some Jumbo frames environments. If this performance degradation is observed, increasing the application's socket buffer size and/or increasing the /proc/sys /net/ipv4/tcp_*mem entry values might help.
  • For more details, see the specific application manual and /usr/src/linux*/Documentation/networking/ip-sysctl.txt.
    
    
• Multiple Interfaces on Same Ethernet Broadcast Network
  • Due to the default ARP behavior on Linux, it is not possible to have one system on two IP networks in the same Ethernet broadcast domain (non-partitioned switch) behave as expected. All Ethernet interfaces will respond to IP traffic for any IP address assigned to the system. This results in unbalanced receive traffic.
  • If you have multiple interfaces in a server, do either of the following:
    • Turn on ARP filtering by entering the following command:
      echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
      
      
    • Install the interfaces in separate broadcast domains: either in different switches or in a switch partitioned to VLANs.
      
      
• UDP Stress Test Dropped Packet Issue
  • Under small packets UDP stress test with 10 Gigabit Ethernet driver, the Linux system can drop UDP packets due to the fullness of socket buffers. You might want to change the driver's Flow Control variables to the minimum value for controlling packet reception. Or, you can increase the kernel's default buffer sizes for UDP by changing the values in /proc/sys/net/core/rmem_default and rmem_max.
    
    
• Unplugging Network Cable While ethtool -p is Running
  • In kernel versions 2.5.50 and later (including 2.6 kernel), unplugging the network cable while ethtool -p is running will cause the system to become unresponsive to keyboard commands, except for CTRL+ALT+DEL. Restarting the system appears to be the only remedy.
• Bonding Configuration
  • While creating the bond, issue the following command:
    modprobe -v bonding fail_over_mac=1
    
    
  • Then rebuild the initrd and reboot the system.
    

Note: See the change history file for more information.

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