123160Smckusick /* 223160Smckusick * Copyright (c) 1980 Regents of the University of California. 323160Smckusick * All rights reserved. The Berkeley software License Agreement 423160Smckusick * specifies the terms and conditions for redistribution. 523160Smckusick * 6*26035Skarels * @(#)raw_cb.c 6.9 (Berkeley) 02/02/86 723160Smckusick */ 85635Sroot 917066Sbloom #include "param.h" 1017066Sbloom #include "systm.h" 1117066Sbloom #include "mbuf.h" 1217066Sbloom #include "socket.h" 1317066Sbloom #include "socketvar.h" 1421769Skarels #include "domain.h" 1521769Skarels #include "protosw.h" 1617066Sbloom #include "errno.h" 1710890Ssam 1817066Sbloom #include "if.h" 1917066Sbloom #include "route.h" 2017066Sbloom #include "raw_cb.h" 2112783Ssam #include "../netinet/in.h" 2219948Sbloom #ifdef PUP 2312783Ssam #include "../netpup/pup.h" 2419948Sbloom #endif 255635Sroot 2610890Ssam #include "../vax/mtpr.h" 2710890Ssam 285635Sroot /* 295635Sroot * Routines to manage the raw protocol control blocks. 305635Sroot * 315635Sroot * TODO: 325635Sroot * hash lookups by protocol family/protocol + address family 336339Ssam * take care of unique address problems per AF? 346045Swnj * redo address binding to allow wildcards 355635Sroot */ 365635Sroot 375635Sroot /* 385635Sroot * Allocate a control block and a nominal amount 395635Sroot * of buffer space for the socket. 405635Sroot */ 4121769Skarels raw_attach(so, proto) 425635Sroot register struct socket *so; 4321769Skarels int proto; 445635Sroot { 455635Sroot struct mbuf *m; 465635Sroot register struct rawcb *rp; 475635Sroot 489638Ssam m = m_getclr(M_DONTWAIT, MT_PCB); 495635Sroot if (m == 0) 505635Sroot return (ENOBUFS); 515635Sroot if (sbreserve(&so->so_snd, RAWSNDQ) == 0) 525635Sroot goto bad; 535635Sroot if (sbreserve(&so->so_rcv, RAWRCVQ) == 0) 545635Sroot goto bad2; 555635Sroot rp = mtod(m, struct rawcb *); 565635Sroot rp->rcb_socket = so; 575635Sroot so->so_pcb = (caddr_t)rp; 585635Sroot rp->rcb_pcb = 0; 5921769Skarels rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 6021769Skarels rp->rcb_proto.sp_protocol = proto; 6121769Skarels insque(rp, &rawcb); 625635Sroot return (0); 635635Sroot bad2: 645635Sroot sbrelease(&so->so_snd); 655635Sroot bad: 665635Sroot (void) m_free(m); 675635Sroot return (ENOBUFS); 685635Sroot } 695635Sroot 705635Sroot /* 715635Sroot * Detach the raw connection block and discard 725635Sroot * socket resources. 735635Sroot */ 745635Sroot raw_detach(rp) 755635Sroot register struct rawcb *rp; 765635Sroot { 775635Sroot struct socket *so = rp->rcb_socket; 785635Sroot 7924774Skarels if (rp->rcb_route.ro_rt) 8024774Skarels rtfree(rp->rcb_route.ro_rt); 815635Sroot so->so_pcb = 0; 825635Sroot sofree(so); 835635Sroot remque(rp); 84*26035Skarels if (rp->rcb_options) 85*26035Skarels m_freem(dtom(rp->rcb_options)); 868975Sroot m_freem(dtom(rp)); 875635Sroot } 885635Sroot 895635Sroot /* 905635Sroot * Disconnect and possibly release resources. 915635Sroot */ 925635Sroot raw_disconnect(rp) 935635Sroot struct rawcb *rp; 945635Sroot { 958975Sroot 966509Ssam rp->rcb_flags &= ~RAW_FADDR; 977517Sroot if (rp->rcb_socket->so_state & SS_NOFDREF) 985635Sroot raw_detach(rp); 995635Sroot } 1005635Sroot 1018394Swnj raw_bind(so, nam) 1028394Swnj register struct socket *so; 1038394Swnj struct mbuf *nam; 1048394Swnj { 1058394Swnj struct sockaddr *addr = mtod(nam, struct sockaddr *); 1068394Swnj register struct rawcb *rp; 1078394Swnj 1088394Swnj if (ifnet == 0) 1098394Swnj return (EADDRNOTAVAIL); 1108394Swnj /* BEGIN DUBIOUS */ 1118394Swnj /* 1128394Swnj * Should we verify address not already in use? 1138394Swnj * Some say yes, others no. 1148394Swnj */ 1158394Swnj switch (addr->sa_family) { 1168394Swnj 11725647Skarels #ifdef INET 1188394Swnj case AF_IMPLINK: 11912783Ssam case AF_INET: { 1208394Swnj if (((struct sockaddr_in *)addr)->sin_addr.s_addr && 12118409Skarels ifa_ifwithaddr(addr) == 0) 1228394Swnj return (EADDRNOTAVAIL); 1238394Swnj break; 12412783Ssam } 12512783Ssam #endif 1268394Swnj 1278394Swnj default: 1288394Swnj return (EAFNOSUPPORT); 1298394Swnj } 1308394Swnj /* END DUBIOUS */ 1319184Ssam rp = sotorawcb(so); 1328394Swnj bcopy((caddr_t)addr, (caddr_t)&rp->rcb_laddr, sizeof (*addr)); 1338394Swnj rp->rcb_flags |= RAW_LADDR; 1348394Swnj return (0); 1358394Swnj } 1368394Swnj 1375635Sroot /* 1385635Sroot * Associate a peer's address with a 1395635Sroot * raw connection block. 1405635Sroot */ 1418394Swnj raw_connaddr(rp, nam) 1425635Sroot struct rawcb *rp; 1438394Swnj struct mbuf *nam; 1445635Sroot { 1458394Swnj struct sockaddr *addr = mtod(nam, struct sockaddr *); 1468394Swnj 1476509Ssam bcopy((caddr_t)addr, (caddr_t)&rp->rcb_faddr, sizeof(*addr)); 1486509Ssam rp->rcb_flags |= RAW_FADDR; 1495635Sroot } 150