Kernel modules responsible for sending and receiving packets

rcorcs · 09-25-2011, 03:47 PM

Hi,

I'm studying some parts of the kernel code, and I need to learn
the part of the kernel responsible for sending and receiving packets.

What I mean is, when someone calls the C functions send(), sendto(), recv() and recvfrom(), which kernel modules and files of the kernel source code are responsible for implementing such tasks?

Please, can anyone help me?

Thanks

rcorcs · 09-25-2011, 04:23 PM

I know that in the Minix kernel (actually it's in the Minix application layer) the files responsibles for doing that are:

SEND:
src/lib/ip/sendto.c
src/lib/ip/send.c

RECV:
src/lib/ip/recvfrom.c
src/lib/ip/recv.c

Are they similar in the Linux kernel?

andrewthomas · 09-25-2011, 06:08 PM

You might want to look at:

Code:

./net/ipv4/ip_output.c
./net/ipv4/ip_input.c

relative to the top-level of your kernel source directory.