comp_extra 1452 drivers/net/ppp/ppp_generic.c ppp->xcomp->comp_extra + ppp->dev->hard_header_len; comp_extra 1454 drivers/net/ppp/ppp_generic.c ppp->xcomp->comp_extra + PPP_HDRLEN; comp_extra 649 drivers/net/ppp/ppp_mppe.c .comp_extra = MPPE_PAD, comp_extra 83 include/linux/ppp-comp.h unsigned int comp_extra;