hello,
i want to add my own variables with icmp header.
so i modified icmp header and added 2 variables to
make icmp header len is 16 bytes. but when i build
kernel image and boot it and then ping to myself why
am i still getting 8 bytes header i.e. 84 bytes packet
and why not 92 bytes packet?
56 bytes data + 16 bytes icmp header + 20 bytes ip
header = 92 bytes
also ping results shown below takes much time to ping
myself. what gone wrong? how to make it behave like
normal ping?
regards,
parag.
I POST TO LINUX-KERNEL mailing list but uanble to get good explaination.
On Tue, 27 Apr 2004 mohanlal jangir wrote :
>See this
>http://www.dirac.org/linux/writing/lkmpg/lkmpg.html#AEN715
>
>Also read about copy_to_user/copy_from_user functions.
>
>Regards
>Mohanlal
>
>----- Original Message -----
> From: "bunty" <bunty123_4@rediffmail.com>
>To: <kernelnewbies@nl.linux.org>; <mohanlal@samsung.com>;
><omanakuttan@tataelxsi.co.in>
>Sent: Monday, April 26, 2004 8:24 PM
>Subject: query related to /proc and read_write.c file
>
>
>hello,
> 1) how kernel write to /proc entry? while studying kernel source i found
>that there is no open/read/write/close file functions.
>what i found is that sprintf function that writes to /proc entry. can anyone
>please explain it?
>
> 2)what is the use of read_write.c file in fs directory of kernel source?
>the file contains sys_read, sys_write. why there is no function that will
>read a user space file and write to it.
>i found few questions asked on linux-kernel as well as kernelnewbies but
>there is no one able to answer it?
>i am using kernel 2.4.24.
>regards,
>parag.
>
>
>--
>Kernelnewbies: Help each other learn about the Linux kernel.
>Archive: http://mail.nl.linux.org/kernelnewbies/
>FAQ: http://kernelnewbies.org/faq/
>
