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Forum: Kernel

Request help with Linux kernel compilation, theory, programming, or other kernel related issues

  1. Question about select()

    Hi, I'm trying to understand how the select() system call works. My understanding is the following: - The select() is called in the user space....

    Started by blshyu, 05-19-2011
    • Replies: 0
    • Views: 912
    05-19-2011 Go to last post
  2. Writting a network device driver

    Hello! I'm trying to write a network device driver that creates a device file (for example, /dev/output), and when it's acessed (by system call...

    Started by killer_you, 05-18-2011
    • Replies: 0
    • Views: 725
    05-18-2011 Go to last post
  3. How to control switch Marvel 88E6097 by MDIO bus on MPC8306 processor

    Hi all, i'm starting to write a kernel module to control a Marvel 88E6097 switch connected to a MPC8306 processor through MDIO. Unfortunately i can't...

    Started by MirkoBanchi, 05-18-2011
    • Replies: 0
    • Views: 3,994
    05-18-2011 Go to last post
  4. Red face changing the kernel loadable module size

    Hi, I was trying to load a module using insmod, but the module did not load, as the size of the module was too big. :eek: Is there any limit to...

    Started by rinjo, 05-17-2011
    • Replies: 5
    • Views: 2,140
    05-18-2011 Go to last post
  5. How to control a phy eth device by MII/MDIO

    Hi all, i have some problems trying to control a phy eth device by mii/mdio. I'm a newbie about this topic and i can't find online documentation...

    Started by MirkoBanchi, 05-18-2011
    • Replies: 0
    • Views: 3,659
    05-18-2011 Go to last post
  6. issue while accessing PCI device

    Hi I am trying to bringup a PCI device on an EVAL board. When linux kernel comes up the device is detected and its configuration space is...

    Started by amitkumarpal, 05-18-2011
    • Replies: 0
    • Views: 1,037
    05-18-2011 Go to last post
  7. Question How to change the source MAC while sending packet

    Hi All, I have a problem in sending udp packets.The problem details are... I configured 6 Ip's, 3 in one bond(bond0.207), next 3 in...

    Started by muralilinux, 05-17-2011
    • Replies: 0
    • Views: 1,601
    05-17-2011 Go to last post
  8. control individual VGA pins with linux

    Hi everyone, I'm stuck. I've been trying to figure out how to control the individual pins of a VGA port with Linux, within a piece of C code. I've...

    Started by jforce93, 05-16-2011
    • Replies: 0
    • Views: 1,079
    05-16-2011 Go to last post
  9. Question Linux Driver

    :confused: Hello, I'm trying to understand how a network kernel device driver work. For example when an application using libc call the...

    Started by MonuDs, 05-13-2011
    • Replies: 0
    • Views: 975
    05-13-2011 Go to last post
  10. Can we use fifos for transfering data from device driver to an user ap

    Can we use fifos for transfering data from device driver to an user application?

    Started by tanniru, 05-11-2011
    • Replies: 1
    • Views: 1,001
    05-12-2011 Go to last post
  11. Boot param is missed

    Hi, In my boot command line, root= option is not there. How the kernel gets to know where to mount the ramdisk? Thanks in advance...

    Started by subvand, 05-12-2011
    • Replies: 0
    • Views: 680
    05-12-2011 Go to last post
  12. root file system more users with different access before mounting

    Hi, I need to customize linux kernel root file system for embedded linux system. During compile time, for root file system I am able to create...

    Started by hieswarmcaquest, 05-11-2011
    • Replies: 0
    • Views: 632
    05-11-2011 Go to last post
  13. how can we send data from device driver to an user application?

    Hi.. how can we send data from device driver to an user application? which will be efficient one? 1) using named pipe.. thats FIFO ..... here...

    Started by tanniru, 05-11-2011
    • Replies: 0
    • Views: 1,116
    05-11-2011 Go to last post
  14. How to access kernel config from application?

    I use different configurations of the same kernel (2.4). How can I add an information (e.g. string or int) to my kernel which my user space...

    Started by yakoda, 05-11-2011
    • Replies: 0
    • Views: 838
    05-11-2011 Go to last post
  15. __init and module_init() difference?

    Could somebody help to explain what the difference is?

    Started by ssg10, 05-11-2011
    • Replies: 0
    • Views: 1,278
    05-11-2011 Go to last post
  16. Dma descriptor allocation

    Hello experts, I'm trying to allocate mem for dma descriptor in chain mode, I need your help in allocation of dma descriptors and buffers. Suppose I...

    Started by 2raghu, 05-10-2011
    • Replies: 0
    • Views: 1,286
    05-10-2011 Go to last post
  17. Unhappy sk_buff->list

    Hello! I am writing a module for Linux 2.6.35. I need replace structure sk_buff in the queue which I get from struct packet_type (field .func)....

    Started by spopov, 05-10-2011
    • Replies: 1
    • Views: 1,225
    05-10-2011 Go to last post
  18. How to debbug crashes in interrupts?

    I'm having some difficulty tracking down a bug I have when a TCP connection is initialized. Specifically, I'm getting this error message when I try...

    Started by sinusance, 05-10-2011
    • Replies: 0
    • Views: 1,037
    05-10-2011 Go to last post
  19. crypto driver

    I have small software protocol that use socket to communicate with an external FPGA (through Ethernet). This FPGA is responsible about only...

    Started by aisha, 05-09-2011
    • Replies: 0
    • Views: 1,457
    05-09-2011 Go to last post
  20. ethernet network driver module

    Can someone help me with simple example of network driver modules that send and receive Ethernet packet on same network interface

    Started by aisha, 05-08-2011
    • Replies: 3
    • Views: 1,814
    05-09-2011 Go to last post

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