danish-rehman
danish-rehman
/ List of files needed for new boot
Last active
August 29, 2015 14:13
List of files needed for new boot
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| # List of all the files stored | |
| >> ls quick_boot_kernel | |
| bzImage | |
| System.map | |
| config-3.16.0 | |
| 3.16.0 |
danish-rehman
/ setup_host
Created
January 8, 2015 06:04
Copy the files at appropriate location of the destination host.
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| # Copy the files at appropriate location of the destination host. | |
| >> cp -R quick_boot_kernel/3.16.0 /lib/modules/ | |
| >> cp quick_boot_kernel/config-3.16.0 /boot/ | |
danish-rehman
/ install_kernel
Last active
August 29, 2015 14:13
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| >> cd quick_boot_kernel | |
| >> /sbin/installkernel 3.16.0 bzImage System.map "/boot" |
danish-rehman
/ compile_install_module
Last active
August 29, 2015 14:13
Compile and install a linux kernel module
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| # Go to linux kernel source code | |
| # This kernel is already compiled and installed | |
| # on the given host | |
| >> cd /mnt/local/linux-3.16 | |
| # Edit the network driver code | |
| >> vim drivers/net/ethernet/intel/igb/igb_main.c | |
| # Compile the module | |
| >> make -C /lib/modules/`uname -r`/build M=drivers/net/ethernet/intel/igb | |
| # Install the module | |
| >> make -C /lib/modules/`uname -r`/build INSTALL_MOD_DIR=kernel/drivers/net/ethernet/intel/igb M=drivers/net/ethernet/intel/igb modules_install |
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| >> ls /lib/modules/3.16.0/kernel/drivers/net/ethernet/intel/igb/igb.ko |
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| # Check your NIC card | |
| >> lspci | awk '/net/ {print $1}' | xargs -i% lspci -ks % | |
| >> lspci | grep -i net | |
| >> sudo lshw -c network | |
| # Determine which driver is currently running | |
| >> ls -l /sys/class/net/<devname>/device/driver/module | |
| ../../../../module/e1000e | |
| >> ls -l /sys/class/net/<devname>/device/driver | |
| ../../../../../bus/pci/drivers/e1000e |
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| # Download the ethtool | |
| >> wget https://www.kernel.org/pub/software/network/ethtool/ethtool-3.16.tar.gz | |
| # Get attributes of the NIC | |
| >> ethtool -t eth0 |
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| Check the offloading values | |
| >> ethtool --show-offload eth0 | |
| Offload parameters for eth1: | |
| rx-checksumming: on | |
| tx-checksumming: on | |
| scatter-gather: on | |
| tcp-segmentation-offload: on | |
| udp-fragmentation-offload: off | |
| generic-segmentation-offload: on | |
| generic-receive-offload: on |
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| >> sudo ethtool --offload eth1 rx off tx off | |
| >> sudo ethtool -K eth1 gso off |
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| >> sudo ethtool -G eth1 tx 64 |