minix/servers/inet/generic/ip_ps.c

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2005-04-21 16:53:53 +02:00
/*
generic/ip_ps.c
pseudo IP specific part of the IP implementation
Created: Apr 23, 1993 by Philip Homburg
Copyright 1995 Philip Homburg
*/
#include "inet.h"
#include "assert.h"
#include "type.h"
#include "buf.h"
#include "event.h"
#include "ip.h"
#include "ip_int.h"
#include "psip.h"
THIS_FILE
FORWARD void ipps_main ARGS(( ip_port_t *ip_port ));
FORWARD void ipps_set_ipaddr ARGS(( ip_port_t *ip_port ));
FORWARD int ipps_send ARGS(( struct ip_port *ip_port, ipaddr_t dest,
acc_t *pack, int broadcast ));
PUBLIC int ipps_init(ip_port)
ip_port_t *ip_port;
{
int result;
result= psip_enable(ip_port->ip_dl.dl_ps.ps_port, ip_port->ip_port);
if (result == -1)
return -1;
#if ZERO
ip_port->ip_dl.dl_ps.ps_send_head= NULL;
ip_port->ip_dl.dl_ps.ps_send_tail= NULL;
#endif
ip_port->ip_dev_main= ipps_main;
ip_port->ip_dev_set_ipaddr= ipps_set_ipaddr;
ip_port->ip_dev_send= ipps_send;
return result;
}
PUBLIC void ipps_get(ip_port_nr)
int ip_port_nr;
{
int result;
acc_t *pack;
ip_port_t *ip_port;
assert(ip_port_nr >= 0 && ip_port_nr < ip_conf_nr);
ip_port= &ip_port_table[ip_port_nr];
assert(ip_port->ip_dl_type == IPDL_PSIP);
while (ip_port->ip_dl.dl_ps.ps_send_head != NULL)
{
pack= ip_port->ip_dl.dl_ps.ps_send_head;
ip_port->ip_dl.dl_ps.ps_send_head= pack->acc_ext_link;
result= psip_send(ip_port->ip_dl.dl_ps.ps_port, pack);
if (result != NW_SUSPEND)
{
assert(result == NW_OK);
continue;
}
pack->acc_ext_link= ip_port->ip_dl.dl_ps.ps_send_head;
ip_port->ip_dl.dl_ps.ps_send_head= pack;
if (pack->acc_ext_link == NULL)
ip_port->ip_dl.dl_ps.ps_send_tail= pack;
break;
}
}
PUBLIC void ipps_put(ip_port_nr, pack)
int ip_port_nr;
acc_t *pack;
{
ip_port_t *ip_port;
assert(ip_port_nr >= 0 && ip_port_nr < ip_conf_nr);
ip_port= &ip_port_table[ip_port_nr];
assert(ip_port->ip_dl_type == IPDL_PSIP);
ip_arrived(ip_port, pack);
}
PRIVATE void ipps_main(ip_port)
ip_port_t *ip_port;
{
/* nothing to do */
}
PRIVATE void ipps_set_ipaddr(ip_port)
ip_port_t *ip_port;
{
int i;
ip_fd_t *ip_fd;
/* revive calls waiting for an ip addresses */
for (i=0, ip_fd= ip_fd_table; i<IP_FD_NR; i++, ip_fd++)
{
if (!(ip_fd->if_flags & IFF_INUSE))
{
continue;
}
if (ip_fd->if_port != ip_port)
{
continue;
}
if (ip_fd->if_flags & IFF_GIPCONF_IP)
{
ip_ioctl (i, NWIOGIPCONF);
}
}
}
PRIVATE int ipps_send(ip_port, dest, pack, broadcast)
struct ip_port *ip_port;
ipaddr_t dest;
acc_t *pack;
int broadcast;
{
int result;
if (broadcast)
ip_arrived_broadcast(ip_port, bf_dupacc(pack));
if (ip_port->ip_dl.dl_ps.ps_send_head == NULL)
{
result= psip_send(ip_port->ip_dl.dl_ps.ps_port, pack);
if (result != NW_SUSPEND)
{
assert(result == NW_OK);
return result;
}
assert (ip_port->ip_dl.dl_ps.ps_send_head == NULL);
ip_port->ip_dl.dl_ps.ps_send_head= pack;
}
else
ip_port->ip_dl.dl_ps.ps_send_tail->acc_ext_link= pack;
ip_port->ip_dl.dl_ps.ps_send_tail= pack;
pack->acc_ext_link= NULL;
return NW_OK;
}
/*
* $PchId: ip_ps.c,v 1.5 1995/11/21 06:45:27 philip Exp $
*/