Hello Team,
Since we should not be calling sock_send msg from interrupt context,
Is there any other alterative call that we can use to send messages over TCP sockets
From interrupt context.
To explain the scenario :
When we invoke our driver from ppp through ping,
ppp_write ->tty_layer..... my_serial_driver_write(..,userbuffer, )
my_serial_driver_write(struct tty_struct *tty,userdatabuffer,int buff_len )
{
msg.iov.iov_base=userdatabuffer;
sock_sendmsg();
}
Since sock_sendmsg calls many sleep calls like might_sleep we are not supposed use them, so can u plz suggest me if there is any other way of passing the data.
Regards,
J.ENDEAVOR
On 2/7/07, Erik Mouw <mouw@xxxxxxxxxxxx> wrote:
On Wed, Feb 07, 2007 at 09:43:43AM -0800, Greg KH wrote:
> On Wed, Feb 07, 2007 at 06:04:06PM +0100, Erik Mouw wrote:
> > FWIW, you can find such functionality in the Perle trueport driver for
> > their Jetstream ethernet serial ports. See
> > http://www.perle.com/downloads/trueport.shtml .
>
> They are hacking up the pty layer in a way that is not very "nice" :(
Well, it's basically a copy of the legacy BSD pty layer with some extra
code for the Trueport to support the real hardware related ioctls (set
speed, etc). The ethernet stuff (or rather: TCP/IP stuff) is handled in
userspace, which is nice.
If you would extend the current Unix98 ptys with such hardware related
functionality, you could handle all ethernet terminal servers in
userland.
Erik
--
They're all fools. Don't worry. Darwin may be slow, but he'll
eventually get them. -- Matthew Lammers in alt.sysadmin.recovery
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