AF_ATMPVC
msg.addr.sap_family = AF_ATMPVC;
msg.addr.sap_family = AF_ATMPVC;
#define PF_ATMPVC AF_ATMPVC
if (sk_atm(vcc)->sk_family == AF_ATMPVC)
pvc.sap_family = AF_ATMPVC;
case AF_ATMPVC:
if (addr->sap_family != AF_ATMPVC)
addr->sap_family = AF_ATMPVC;
#define PF_ATMPVC AF_ATMPVC