On Fri, 22 Sep 2017, Boris Ostrovsky wrote:
> > +static bool pvcalls_front_write_todo(struct sock_mapping *map)
> > +{
> > + struct pvcalls_data_intf *intf = map->active.ring;
> > + RING_IDX cons, prod, size = XEN_FLEX_RING_SIZE(PVCALLS_RING_ORDER);
> > + int32_t error;
> > +
> > + cons = i
> +static bool pvcalls_front_write_todo(struct sock_mapping *map)
> +{
> + struct pvcalls_data_intf *intf = map->active.ring;
> + RING_IDX cons, prod, size = XEN_FLEX_RING_SIZE(PVCALLS_RING_ORDER);
> + int32_t error;
> +
> + cons = intf->out_cons;
> + prod = intf->out_prod;
> +
Send data to an active socket by copying data to the "out" ring. Take
the active socket out_mutex so that only one function can access the
ring at any given time.
If not enough room is available on the ring, rather than returning
immediately or sleep-waiting, spin for up to 5000 cycles. This small
