1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)raw_cb.c 8.1 (Berkeley) 06/10/93 8 */ 9 10 #include <sys/param.h> 11 #include <sys/systm.h> 12 #include <sys/mbuf.h> 13 #include <sys/socket.h> 14 #include <sys/socketvar.h> 15 #include <sys/domain.h> 16 #include <sys/protosw.h> 17 #include <sys/errno.h> 18 19 #include <net/if.h> 20 #include <net/route.h> 21 #include <net/raw_cb.h> 22 #include <netinet/in.h> 23 24 /* 25 * Routines to manage the raw protocol control blocks. 26 * 27 * TODO: 28 * hash lookups by protocol family/protocol + address family 29 * take care of unique address problems per AF? 30 * redo address binding to allow wildcards 31 */ 32 33 u_long raw_sendspace = RAWSNDQ; 34 u_long raw_recvspace = RAWRCVQ; 35 36 /* 37 * Allocate a control block and a nominal amount 38 * of buffer space for the socket. 39 */ 40 int 41 raw_attach(so, proto) 42 register struct socket *so; 43 int proto; 44 { 45 register struct rawcb *rp = sotorawcb(so); 46 int error; 47 48 /* 49 * It is assumed that raw_attach is called 50 * after space has been allocated for the 51 * rawcb. 52 */ 53 if (rp == 0) 54 return (ENOBUFS); 55 if (error = soreserve(so, raw_sendspace, raw_recvspace)) 56 return (error); 57 rp->rcb_socket = so; 58 rp->rcb_proto.sp_family = so->so_proto->pr_domain->dom_family; 59 rp->rcb_proto.sp_protocol = proto; 60 insque(rp, &rawcb); 61 return (0); 62 } 63 64 /* 65 * Detach the raw connection block and discard 66 * socket resources. 67 */ 68 void 69 raw_detach(rp) 70 register struct rawcb *rp; 71 { 72 struct socket *so = rp->rcb_socket; 73 74 so->so_pcb = 0; 75 sofree(so); 76 remque(rp); 77 #ifdef notdef 78 if (rp->rcb_laddr) 79 m_freem(dtom(rp->rcb_laddr)); 80 rp->rcb_laddr = 0; 81 #endif 82 free((caddr_t)(rp), M_PCB); 83 } 84 85 /* 86 * Disconnect and possibly release resources. 87 */ 88 void 89 raw_disconnect(rp) 90 struct rawcb *rp; 91 { 92 93 #ifdef notdef 94 if (rp->rcb_faddr) 95 m_freem(dtom(rp->rcb_faddr)); 96 rp->rcb_faddr = 0; 97 #endif 98 if (rp->rcb_socket->so_state & SS_NOFDREF) 99 raw_detach(rp); 100 } 101 102 #ifdef notdef 103 int 104 raw_bind(so, nam) 105 register struct socket *so; 106 struct mbuf *nam; 107 { 108 struct sockaddr *addr = mtod(nam, struct sockaddr *); 109 register struct rawcb *rp; 110 111 if (ifnet == 0) 112 return (EADDRNOTAVAIL); 113 rp = sotorawcb(so); 114 nam = m_copym(nam, 0, M_COPYALL, M_WAITOK); 115 rp->rcb_laddr = mtod(nam, struct sockaddr *); 116 return (0); 117 } 118 #endif 119