AF_IRDA 221 include/linux/socket.h #define PF_IRDA AF_IRDA AF_IRDA 721 net/irda/af_irda.c saddr.sir_family = AF_IRDA; AF_IRDA 725 net/irda/af_irda.c saddr.sir_family = AF_IRDA; AF_IRDA 1600 net/irda/af_irda.c if (addr->sir_family != AF_IRDA)