fix header files

[unix-history] / usr / src / sys / deprecated / netdecnet / tp_usrreq.c

/*      tp_usrreq.c     1.2     82/05/15        */

#include "../h/param.h"
#include "../h/systm.h"
#include "../h/mbuf.h"
#include "../h/socket.h"
#include "../h/socketvar.h"
#include "../h/protosw.h"
#include "../net/dn_systm.h"
#include "../net/if.h"
#include "../net/tp.h"
#include "../net/tp_var.h"
#include "../errno.h"

/*
* Transport protocol interface to socket abstraction.
* Used ONLY to initialize the Transport layer.  May be
* used for routing control in the future.
*/

/*
* Process a Transport user request.  Only allowed
* operation is PRU_ATTACH to initialize the Transport
* layer.
*/
tp_usrreq(so, req, m, addr)
       struct socket *so;
       int req;
       struct mbuf *m;
       caddr_t addr;
{
       int s = splimp();
       int error = 0;

       /*
        */
       if (so->so_pcb != 0 || req != PRU_ATTACH) {
               splx(s);
               return (EINVAL);                /* XXX */
       }
       if (tpstate != TPS_HALT) {
               splx(s);
               return (0);
       }
       if (tp_linit() == 0) {
               splx(s);
               return (EIO);
       }
       sleep((caddr_t)&tpstate, PZERO+1);
       splx(s);
       return (0);
}

/*
* Perform transport initialization for a line
*/
tp_linit()
{
       register struct mbuf *m;
       register struct tpin *t;
       register int n;

       m = m_get(0);
       if (m == 0)
               return (0);
       m->m_off = MMINOFF;
       m->m_len = sizeof (struct tpin);
       t = mtod(m, struct tpin *);
       t->tpin_ctlflg = TP_INIT;
       AD_SHORT(t->tpin_srcnode, tp_host);
       t->tpin_tiinfo = TPINNT_NRT;
       AD_SHORT(t->tpin_blksize, 1024);
       t->tpin_ver[0] = 1;
       t->tpin_ver[1] = 3;
       t->tpin_ver[2] = 0;
       t->tpin_res = 0;
       n = (*tpifp->if_output)(tpifp, m, PF_DECNET);
       tpstate = TPS_TIS;
       m_freem(m);
       return (n);
}