kernel

Writing An Ebtables Match Module Tutorial

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One of the biggest problems I have had when working with Linux and other open-source projects is the lack of up-to-date documentation. Some projects go to great lengths to modernize documentation and others don't at all which results in the project being forgotten. Netfilter Xtables modules while in use on almost every system, seem to not get the polish they deserve for tutorials, examples and updated documentation.

Bridge Silently Drops LLDP Traffic Despite Ebtables Rule

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I recently discovered that LLDP traffic is silently blocked/dropped via a mask in br_input.c and will not forward LLDP despite having a rule with the correct protocol value in ebtables. In ebtables, the packet count will not increment and no messages are generated in the kernel logs.

To fix the netmask value to allow LLDP, patch net/bridge/br_private.h or use my patch:

Compiling Fedora 16/17/18/19 Kernel

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Here in this post, I will explain how to compile and install Linux Kernel for any version of fedora 16 and upwards from Vanilla source available from Kernel.org

To compile Linux Kernel the following are required to be installed:

  • gcc latest version,
  • ncurses development package
  • and system packages should be up-to date

To install the dependencies run the following commands:

For gcc

$ sudo yum install gcc

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