projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 24d3bb4c | 1 | /* tp_usrreq.c 1.2 82/05/15 */ |
| a98f6f8a SL |
2 | |
| 3 | #include "../h/param.h" | |
| 4 | #include "../h/systm.h" | |
| 5 | #include "../h/mbuf.h" | |
| 6 | #include "../h/socket.h" | |
| 7 | #include "../h/socketvar.h" | |
| 8 | #include "../h/protosw.h" | |
| 9 | #include "../net/dn_systm.h" | |
| 10 | #include "../net/if.h" | |
| 11 | #include "../net/tp.h" | |
| 12 | #include "../net/tp_var.h" | |
| 13 | #include "../errno.h" | |
| 14 | ||
| 15 | /* | |
| 16 | * Transport protocol interface to socket abstraction. | |
| 17 | * Used ONLY to initialize the Transport layer. May be | |
| 18 | * used for routing control in the future. | |
| 19 | */ | |
| 20 | ||
| 21 | /* | |
| 22 | * Process a Transport user request. Only allowed | |
| 23 | * operation is PRU_ATTACH to initialize the Transport | |
| 24 | * layer. | |
| 25 | */ | |
| 26 | tp_usrreq(so, req, m, addr) | |
| 27 | struct socket *so; | |
| 28 | int req; | |
| 29 | struct mbuf *m; | |
| 30 | caddr_t addr; | |
| 31 | { | |
| 32 | int s = splimp(); | |
| 33 | int error = 0; | |
| 34 | ||
| 35 | /* | |
| 36 | */ | |
| 37 | if (so->so_pcb != 0 || req != PRU_ATTACH) { | |
| 38 | splx(s); | |
| 39 | return (EINVAL); /* XXX */ | |
| 40 | } | |
| 41 | if (tpstate != TPS_HALT) { | |
| 42 | splx(s); | |
| 43 | return (0); | |
| 44 | } | |
| 45 | if (tp_linit() == 0) { | |
| 46 | splx(s); | |
| 47 | return (EIO); | |
| 48 | } | |
| 49 | sleep((caddr_t)&tpstate, PZERO+1); | |
| 50 | splx(s); | |
| 51 | return (0); | |
| 52 | } | |
| 53 | ||
| 54 | /* | |
| 55 | * Perform transport initialization for a line | |
| 56 | */ | |
| 57 | tp_linit() | |
| 58 | { | |
| 59 | register struct mbuf *m; | |
| 60 | register struct tpin *t; | |
| 61 | register int n; | |
| 62 | ||
| 63 | m = m_get(0); | |
| 64 | if (m == 0) | |
| 65 | return (0); | |
| 66 | m->m_off = MMINOFF; | |
| 67 | m->m_len = sizeof (struct tpin); | |
| 68 | t = mtod(m, struct tpin *); | |
| 69 | t->tpin_ctlflg = TP_INIT; | |
| 70 | AD_SHORT(t->tpin_srcnode, tp_host); | |
| 71 | t->tpin_tiinfo = TPINNT_NRT; | |
| 72 | AD_SHORT(t->tpin_blksize, 1024); | |
| 73 | t->tpin_ver[0] = 1; | |
| 74 | t->tpin_ver[1] = 3; | |
| 75 | t->tpin_ver[2] = 0; | |
| 76 | t->tpin_res = 0; | |
| 77 | n = (*tpifp->if_output)(tpifp, m, PF_DECNET); | |
| 78 | tpstate = TPS_TIS; | |
| 79 | m_freem(m); | |
| 80 | return (n); | |
| 81 | } |