Subject: Re: how is dest addr handled by connect() or sendto() code ?
To: Philip Christian <>
From: Jaromir Dolecek <>
List: tech-kern
Date: 01/30/2003 15:14:55
Philip Christian wrote:
> In fact I have manually forced an address into this structure
> inside the rclnp_output function and recompiled the kernel, and a
> packet is then actually transmitted.

Seems like the address isn't properly copied to ISO-specific structures
for some reason.

> I cannot figure out what the kernel does when send() or sendto() are executed.
> There are various tables of system calls in places like /sys/syscall.h
> but I can't get from there to the actual code.

send() is now userland wrapper around sendto(2) syscall. Look
in kernel, in src/sys/kern/uipc_syscalls.c:sys_sendto() for actual
My guess there is some #ifdef ISO missing somewhere in kernel,
somewhere along similar #ifdef INET etc.

Jaromir Dolecek <>  
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