On Thu, 21 Sep 2017, Boris Ostrovsky wrote:
> > +int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int
> > flags)
> > +{
> > + struct pvcalls_bedata *bedata;
> > + struct sock_mapping *map;
> > + struct sock_mapping *map2 = NULL;
> > + struct xen_pvcalls_request *req;
>
+int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int
flags)
+{
+ struct pvcalls_bedata *bedata;
+ struct sock_mapping *map;
+ struct sock_mapping *map2 = NULL;
+ struct xen_pvcalls_request *req;
+ int notify, req_id, ret, evtchn, nonblock;
+
Introduce a waitqueue to allow only one outstanding accept command at
any given time and to implement polling on the passive socket. Introduce
a flags field to keep track of in-flight accept and poll commands.
Send PVCALLS_ACCEPT to the backend. Allocate a new active socket. Make
sure that only
