Hi ,
You can do that rather there is tutorial on how to do
socket programming from kernel space by Allesandro
rubini.
Somthing like this.
int error;
static int sockfd;
static struct completion startup =
COMPLETION_INITIALIZER(startup);
error=sock_create(PF_INET,SOCK_DGRAM,
IPPROTO_UDP, &sock);
if(error < 0){
printk("MY thread can't create
socket:errno=%d\n", error);
}
memset(&source,0,sizeof(source));
source.sin_family =PF_INET;
source.sin_addr.s_addr
=htonl(inet_addr(CLIENTIP));
source.sin_port =htons(CLIENT_PORT);
memset(&target,0,sizeof(target));
target.sin_family =PF_INET;
target.sin_addr.s_addr
=htonl(inet_addr(SERVERIP));
target.sin_port =htons(SERVER_PORT);
error = sock->ops->bind(sock,(struct sockaddr
*)&source,sizeof(source));
if (error<0) {
printk("sockd: can't bind UDP port
%d\n",SERVER_PORT);
}
pid=kernel_thread(sock_thread,&startup,0);
although abovs code snippet is for simple UDP data
transfer.
I dont think much difference for
tcp data transfer as well.
--- jhoney jhoney <jhoney_joney@xxxxxxxxxxxxxx> wrote:
> Hello All,
>
> I am calling socket function (sock_*) from the
> kernel. In my work no application is being run,
> everything should be done from the kernel only. The
> actual application runs on other boad and
> communicates with the pci add-on card which runs
> linux and I have to make use of the TCP/IP stack.To
> test this I have written one server programe which
> is running from the kernel.
>
> I faced the following problem. when I connected more
> than two clients from other machine to the server
> progarm, it is getting hanged, I guess it is due to
> the accept() function.
>
> But in actual application program, the process is
> going to block until the accept returns. Since I do
> not have any application, how to simulate this.
>
> I had one plan of using kernel threads for accept.
> will it be appropriate?
>
> Can I create process from the kernel so that for
> each connection , process is going to block when
> accept is called .
>
> Thanks in advance.
>
> Regards
> Jhoney
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