1 /* uipc_proto.c 4.10 81/12/03 */ 2 3 #include "../h/param.h" 4 #include "../h/socket.h" 5 #include "../h/protosw.h" 6 #include "../h/mbuf.h" 7 #include "../net/in.h" 8 #include "../net/in_systm.h" 9 10 /* 11 * Protocol configuration table and routines to search it. 12 * 13 * SHOULD INCLUDE A HEADER FILE GIVING DESIRED PROTOCOLS 14 */ 15 16 /* 17 * Local protocol handler. 18 */ 19 int piusrreq(); 20 21 /* 22 * TCP/IP protocol family: IP, ICMP, UDP, TCP. 23 */ 24 int ip_output(); 25 int ip_init(),ip_slowtimo(),ip_drain(); 26 int icmp_input(),icmp_ctlinput(); 27 int icmp_drain(); 28 int udp_input(),udp_ctlinput(); 29 int udp_usrreq(); 30 int udp_init(); 31 int tcp_input(),tcp_ctlinput(); 32 int tcp_usrreq(); 33 int tcp_init(),tcp_fasttimo(),tcp_slowtimo(),tcp_drain(); 34 int rip_input(),rip_output(),rip_ctlinput(); 35 int rip_usrreq(),rip_slowtimo(); 36 37 struct protosw protosw[] = { 38 { SOCK_STREAM, PF_UNIX, 0, PR_CONNREQUIRED, 39 0, 0, 0, 0, 40 piusrreq, 41 0, 0, 0, 0, 42 }, 43 { SOCK_DGRAM, PF_UNIX, 0, PR_ATOMIC|PR_ADDR, 44 0, 0, 0, 0, 45 piusrreq, 46 0, 0, 0, 0, 47 }, 48 { SOCK_RDM, PF_UNIX, 0, PR_ATOMIC|PR_ADDR, 49 0, 0, 0, 0, 50 piusrreq, 51 0, 0, 0, 0, 52 }, 53 { SOCK_RAW, PF_UNIX, 0, PR_ATOMIC|PR_ADDR, 54 0, 0, 0, 0, 55 piusrreq, 56 0, 0, 0, 0, 57 }, 58 { 0, 0, 0, 0, 59 0, ip_output, 0, 0, 60 0, 61 ip_init, 0, ip_slowtimo, ip_drain, 62 }, 63 { 0, 0, IPPROTO_ICMP, 0, 64 icmp_input, 0, icmp_ctlinput, 0, 65 0, 66 0, 0, 0, icmp_drain, 67 }, 68 { SOCK_DGRAM, PF_INET, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, 69 udp_input, 0, udp_ctlinput, 0, 70 udp_usrreq, 71 udp_init, 0, 0, 0, 72 }, 73 { SOCK_STREAM, PF_INET, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD, 74 tcp_input, 0, tcp_ctlinput, 0, 75 tcp_usrreq, 76 tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, 77 }, 78 { SOCK_RAW, PF_INET, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, 79 rip_input, rip_output, rip_ctlinput, 0, 80 rip_usrreq, 81 0, 0, rip_slowtimo, 0, 82 } 83 }; 84 85 #define NPROTOSW (sizeof(protosw) / sizeof(protosw[0])) 86 87 struct protosw *protoswLAST = &protosw[NPROTOSW-1]; 88 89 /* 90 * Operations on protocol table and protocol families. 91 */ 92 93 /* 94 * Initialize all protocols. 95 */ 96 pfinit() 97 { 98 register struct protosw *pr; 99 100 COUNT(PFINIT); 101 for (pr = protoswLAST; pr >= protosw; pr--) 102 if (pr->pr_init) 103 (*pr->pr_init)(); 104 } 105 106 /* 107 * Find a standard protocol in a protocol family 108 * of a specific type. 109 */ 110 struct protosw * 111 pffindtype(family, type) 112 int family, type; 113 { 114 register struct protosw *pr; 115 116 COUNT(PFFINDTYPE); 117 if (family == 0) 118 return (0); 119 for (pr = protosw; pr <= protoswLAST; pr++) 120 if (pr->pr_family == family && pr->pr_type == type) 121 return (pr); 122 return (0); 123 } 124 125 /* 126 * Find a specified protocol in a specified protocol family. 127 */ 128 struct protosw * 129 pffindproto(family, protocol) 130 int family, protocol; 131 { 132 register struct protosw *pr; 133 134 COUNT(PFFINDPROTO); 135 if (family == 0) 136 return (0); 137 for (pr = protosw; pr <= protoswLAST; pr++) 138 if (pr->pr_family == family && pr->pr_protocol == protocol) 139 return (pr); 140 return (0); 141 } 142