1*5635Sroot /* raw_cb.c 4.1 82/02/01 */ 2*5635Sroot 3*5635Sroot #include "../h/param.h" 4*5635Sroot #include "../h/systm.h" 5*5635Sroot #include "../h/mbuf.h" 6*5635Sroot #include "../h/socket.h" 7*5635Sroot #include "../h/socketvar.h" 8*5635Sroot #include "../h/mtpr.h" 9*5635Sroot #include "../net/in.h" 10*5635Sroot #include "../net/in_systm.h" 11*5635Sroot #include "../net/if.h" 12*5635Sroot #include "../net/raw_cb.h" 13*5635Sroot #include "/usr/include/errno.h" 14*5635Sroot 15*5635Sroot /* 16*5635Sroot * Routines to manage the raw protocol control blocks. 17*5635Sroot * 18*5635Sroot * TODO: 19*5635Sroot * hash lookups by protocol family/protocol + address family 20*5635Sroot * take care of unique address problems per AF 21*5635Sroot */ 22*5635Sroot 23*5635Sroot /* 24*5635Sroot * Allocate a control block and a nominal amount 25*5635Sroot * of buffer space for the socket. 26*5635Sroot */ 27*5635Sroot raw_attach(so, addr) 28*5635Sroot register struct socket *so; 29*5635Sroot struct sockaddr *addr; 30*5635Sroot { 31*5635Sroot struct mbuf *m; 32*5635Sroot register struct rawcb *rp; 33*5635Sroot struct ifnet *ifp = ifnet; 34*5635Sroot 35*5635Sroot COUNT(RAW_ATTACH); 36*5635Sroot if (so->so_options & SO_DEBUG) 37*5635Sroot printf("raw_attach: addr=%d\n", addr->sa_family); 38*5635Sroot /* 39*5635Sroot * Should we verify address not already in use? 40*5635Sroot * Some say yes, others no. 41*5635Sroot */ 42*5635Sroot if (addr) switch (addr->sa_family) { 43*5635Sroot 44*5635Sroot case AF_INET: { 45*5635Sroot register struct sockaddr_in *sin = (struct sockaddr_in *)addr; 46*5635Sroot 47*5635Sroot if (ifnet && sin->sin_addr.s_addr == 0) 48*5635Sroot sin->sin_addr = ifnet->if_addr; 49*5635Sroot ifp = if_ifwithaddr(sin->sin_addr); 50*5635Sroot break; 51*5635Sroot } 52*5635Sroot 53*5635Sroot default: 54*5635Sroot return (EAFNOSUPPORT); 55*5635Sroot } 56*5635Sroot if (ifp == 0) 57*5635Sroot return (EADDRNOTAVAIL); 58*5635Sroot m = m_getclr(M_DONTWAIT); 59*5635Sroot if (m == 0) 60*5635Sroot return (ENOBUFS); 61*5635Sroot if (sbreserve(&so->so_snd, RAWSNDQ) == 0) 62*5635Sroot goto bad; 63*5635Sroot if (sbreserve(&so->so_rcv, RAWRCVQ) == 0) 64*5635Sroot goto bad2; 65*5635Sroot rp = mtod(m, struct rawcb *); 66*5635Sroot rp->rcb_socket = so; 67*5635Sroot insque(rp, &rawcb); 68*5635Sroot so->so_pcb = (caddr_t)rp; 69*5635Sroot rp->rcb_pcb = 0; 70*5635Sroot 71*5635Sroot if (addr) 72*5635Sroot bcopy(addr, &so->so_addr, sizeof(*addr)); 73*5635Sroot return (0); 74*5635Sroot bad2: 75*5635Sroot sbrelease(&so->so_snd); 76*5635Sroot bad: 77*5635Sroot (void) m_free(m); 78*5635Sroot return (ENOBUFS); 79*5635Sroot } 80*5635Sroot 81*5635Sroot /* 82*5635Sroot * Detach the raw connection block and discard 83*5635Sroot * socket resources. 84*5635Sroot */ 85*5635Sroot raw_detach(rp) 86*5635Sroot register struct rawcb *rp; 87*5635Sroot { 88*5635Sroot struct socket *so = rp->rcb_socket; 89*5635Sroot 90*5635Sroot COUNT(RAW_DETACH); 91*5635Sroot if (rp->rcb_socket->so_options & SO_DEBUG) 92*5635Sroot printf("raw_detach: rp=%X\n", rp); 93*5635Sroot so->so_pcb = 0; 94*5635Sroot sofree(so); 95*5635Sroot remque(rp); 96*5635Sroot (void) m_freem(dtom(rp)); 97*5635Sroot } 98*5635Sroot 99*5635Sroot /* 100*5635Sroot * Disconnect and possibly release resources. 101*5635Sroot */ 102*5635Sroot raw_disconnect(rp) 103*5635Sroot struct rawcb *rp; 104*5635Sroot { 105*5635Sroot COUNT(RAW_DISCONNECT); 106*5635Sroot if (rp->rcb_socket->so_options & SO_DEBUG) 107*5635Sroot printf("raw_disconnect: rp=%X\n", rp); 108*5635Sroot rp->rcb_flags &= ~RAW_ADDR; 109*5635Sroot if (rp->rcb_socket->so_state & SS_USERGONE) 110*5635Sroot raw_detach(rp); 111*5635Sroot } 112*5635Sroot 113*5635Sroot /* 114*5635Sroot * Associate a peer's address with a 115*5635Sroot * raw connection block. 116*5635Sroot */ 117*5635Sroot raw_connaddr(rp, addr) 118*5635Sroot struct rawcb *rp; 119*5635Sroot struct sockaddr *addr; 120*5635Sroot { 121*5635Sroot COUNT(RAW_CONNADDR); 122*5635Sroot if (rp->rcb_socket->so_options & SO_DEBUG); 123*5635Sroot printf("raw_connaddr: rp=%x, addr=<%x,%x>\n", 124*5635Sroot rp, addr->sa_family, ((struct sockaddr_in *)addr)->sin_addr); 125*5635Sroot bcopy(addr, &rp->rcb_addr, sizeof(struct sockaddr)); 126*5635Sroot rp->rcb_flags |= RAW_ADDR; 127*5635Sroot } 128