[PATCH rtems-libbsd] ppp: Fix transmitting data

[Chris Johns]

On 12/8/21 9:42 pm, Christian Mauderer wrote:
> The pppstart expected that a driver write would somehow magically
> process all data passed to the write function. Because ppp disables all
> buffering that originally has been in termios, that assumption is not
> true for all but polled drivers.
> 
> With this patch, the pppstart now gets and processes the feedback that
> is returned from the driver via rtems_termios_dequeue_characters.
> 
> Fixes #4493
> ---
>  rtemsbsd/sys/net/if_ppp.c    | 11 ++++++-----
>  rtemsbsd/sys/net/if_pppvar.h |  1 +
>  rtemsbsd/sys/net/ppp_tty.c   | 32 ++++++++++++++++++++++++++++----
>  3 files changed, 35 insertions(+), 9 deletions(-)
> 
> diff --git a/rtemsbsd/sys/net/if_ppp.c b/rtemsbsd/sys/net/if_ppp.c
> index 709f13e04..e134dc760 100644
> --- a/rtemsbsd/sys/net/if_ppp.c
> +++ b/rtemsbsd/sys/net/if_ppp.c
> @@ -313,11 +313,12 @@ static rtems_task ppp_txdaemon(rtems_task_argument arg)
>        frag=0;
>  
>        /* initialize output values */
> -      sc->sc_outfcs    = PPP_INITFCS;
> -      sc->sc_outbuf    = (u_char *)0;
> -      sc->sc_outlen    = (short   )0;
> -      sc->sc_outoff    = (short   )0;
> -      sc->sc_outfcslen = (short   )0;
> +      sc->sc_outfcs        = PPP_INITFCS;
> +      sc->sc_outbuf        = (u_char *)0;
> +      sc->sc_outlen        = (short   )0;
> +      sc->sc_outoff        = (short   )0;
> +      sc->sc_outoff_update = false;
> +      sc->sc_outfcslen     = (short   )0;

This is not the FreeBSD clang-format. Once my changes are pushed you can use the
style to reformat this code.

Chris