1*7517Sroot /* raw_cb.c 4.11 82/07/24 */ 25635Sroot 35635Sroot #include "../h/param.h" 45635Sroot #include "../h/systm.h" 55635Sroot #include "../h/mbuf.h" 65635Sroot #include "../h/socket.h" 75635Sroot #include "../h/socketvar.h" 85635Sroot #include "../h/mtpr.h" 95635Sroot #include "../net/in.h" 105635Sroot #include "../net/in_systm.h" 115635Sroot #include "../net/if.h" 125635Sroot #include "../net/raw_cb.h" 136339Ssam #include "../net/pup.h" 147298Ssam #include <errno.h> 155635Sroot 165635Sroot /* 175635Sroot * Routines to manage the raw protocol control blocks. 185635Sroot * 195635Sroot * TODO: 205635Sroot * hash lookups by protocol family/protocol + address family 216339Ssam * take care of unique address problems per AF? 226045Swnj * redo address binding to allow wildcards 235635Sroot */ 245635Sroot 255635Sroot /* 265635Sroot * Allocate a control block and a nominal amount 275635Sroot * of buffer space for the socket. 285635Sroot */ 295635Sroot raw_attach(so, addr) 305635Sroot register struct socket *so; 315635Sroot struct sockaddr *addr; 325635Sroot { 335635Sroot struct mbuf *m; 345635Sroot register struct rawcb *rp; 355635Sroot 366339Ssam if (ifnet == 0) 376339Ssam return (EADDRNOTAVAIL); 385635Sroot /* 395635Sroot * Should we verify address not already in use? 405635Sroot * Some say yes, others no. 415635Sroot */ 425635Sroot if (addr) switch (addr->sa_family) { 435635Sroot 445772Swnj case AF_IMPLINK: 456339Ssam case AF_INET: 466339Ssam if (((struct sockaddr_in *)addr)->sin_addr.s_addr && 476339Ssam if_ifwithaddr(addr) == 0) 486339Ssam return (EADDRNOTAVAIL); 495635Sroot break; 505635Sroot 516339Ssam #ifdef PUP 526339Ssam /* 536339Ssam * Curious, we convert PUP address format to internet 546339Ssam * to allow us to verify we're asking for an Ethernet 556339Ssam * interface. This is wrong, but things are heavily 566339Ssam * oriented towards the internet addressing scheme, and 576339Ssam * converting internet to PUP would be very expensive. 586339Ssam */ 596339Ssam case AF_PUP: { 606339Ssam struct sockaddr_pup *spup = (struct sockaddr_pup *)addr; 616339Ssam struct sockaddr_in inpup; 626339Ssam 636339Ssam bzero((caddr_t)&inpup, sizeof(inpup)); 646509Ssam inpup.sin_family = AF_INET; 656339Ssam inpup.sin_addr.s_net = spup->sp_net; 666339Ssam inpup.sin_addr.s_impno = spup->sp_host; 676339Ssam if (inpup.sin_addr.s_addr && 686339Ssam if_ifwithaddr((struct sockaddr *)&inpup) == 0) 696339Ssam return (EADDRNOTAVAIL); 706045Swnj break; 716339Ssam } 726339Ssam #endif 736045Swnj 745635Sroot default: 755635Sroot return (EAFNOSUPPORT); 765635Sroot } 775635Sroot m = m_getclr(M_DONTWAIT); 785635Sroot if (m == 0) 795635Sroot return (ENOBUFS); 805635Sroot if (sbreserve(&so->so_snd, RAWSNDQ) == 0) 815635Sroot goto bad; 825635Sroot if (sbreserve(&so->so_rcv, RAWRCVQ) == 0) 835635Sroot goto bad2; 845635Sroot rp = mtod(m, struct rawcb *); 855635Sroot rp->rcb_socket = so; 865635Sroot insque(rp, &rawcb); 875635Sroot so->so_pcb = (caddr_t)rp; 885635Sroot rp->rcb_pcb = 0; 896529Ssam if (addr) { 906509Ssam bcopy((caddr_t)addr, (caddr_t)&rp->rcb_laddr, sizeof(*addr)); 916529Ssam rp->rcb_flags |= RAW_LADDR; 926529Ssam } 935635Sroot return (0); 945635Sroot bad2: 955635Sroot sbrelease(&so->so_snd); 965635Sroot bad: 975635Sroot (void) m_free(m); 985635Sroot return (ENOBUFS); 995635Sroot } 1005635Sroot 1015635Sroot /* 1025635Sroot * Detach the raw connection block and discard 1035635Sroot * socket resources. 1045635Sroot */ 1055635Sroot raw_detach(rp) 1065635Sroot register struct rawcb *rp; 1075635Sroot { 1085635Sroot struct socket *so = rp->rcb_socket; 1095635Sroot 1105635Sroot so->so_pcb = 0; 1115635Sroot sofree(so); 1125635Sroot remque(rp); 1136339Ssam (void) m_freem(dtom(rp)); 1145635Sroot } 1155635Sroot 1165635Sroot /* 1175635Sroot * Disconnect and possibly release resources. 1185635Sroot */ 1195635Sroot raw_disconnect(rp) 1205635Sroot struct rawcb *rp; 1215635Sroot { 1226509Ssam rp->rcb_flags &= ~RAW_FADDR; 123*7517Sroot if (rp->rcb_socket->so_state & SS_NOFDREF) 1245635Sroot raw_detach(rp); 1255635Sroot } 1265635Sroot 1275635Sroot /* 1285635Sroot * Associate a peer's address with a 1295635Sroot * raw connection block. 1305635Sroot */ 1315635Sroot raw_connaddr(rp, addr) 1325635Sroot struct rawcb *rp; 1335635Sroot struct sockaddr *addr; 1345635Sroot { 1356509Ssam bcopy((caddr_t)addr, (caddr_t)&rp->rcb_faddr, sizeof(*addr)); 1366509Ssam rp->rcb_flags |= RAW_FADDR; 1375635Sroot } 138