| 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 | } |