Hi...
On Wed, Jul 26, 2006 at 12:36:29PM +0530, Chinmaya Mishra wrote:
> Hi all,
>
> I am creating a socket in kernel. It is able to bind. But after abnormal
> termination of the module, I am not able to bind the socket once again.
> Here i use
>
> .......................................................................
> /* create a socket */
> if ((err = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock)) < 0) {
> printk(KERN_INFO MODULE_NAME": Could not create a datagram socket,
> error = %d\n", -ENXIO);
> return;
> }
>
> if((err = sock->ops->setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
> (void*)&option, sizeof(option)))<0)
> printk(KERN_INFO MODULE_NAME": Error in set socket opt for
> SO_REUSEADDR \n");
Either use:
/* must use SOL_IP because we are directly calling proto impl. */
sock->ops->setsockopt(sock, SOL_IP, ...);
or:
/* use "generic" setsockopt entry point */
sock_setsockopt(sock, SOL_SOCKET, ...);
or directly ride the horse:
sock->sk->sk_reuse=1;
BTW don't forget to wrap all "syscall-like" calling with else you'll
get EFAULTs:
mm_segment_t oldfs;
set_fs(KERNEL_DS);
:
/* syscall'ing-alike ...*/
:
set_fs(oldfs);
Regards... and be kind to feedback your results
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