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- /* Generic serial line interface routines
- * Copyright 1992 Phil Karn, KA9Q
- */
- #include <stdio.h>
- #include "global.h"
- #include "proc.h"
- #include "iface.h"
- #include "netuser.h"
- #include "slhc.h"
- #include "n8250.h"
- #include "asy.h"
- #include "ax25.h"
- #include "kiss.h"
- #include "nrs.h"
- #include "pktdrvr.h"
- #include "slip.h"
- #include "ppp.h"
- #include "commands.h"
-
- static int asy_detach __ARGS((struct iface *ifp));
-
- /* Attach a serial interface to the system
- * argv[0]: hardware type, must be "asy"
- * argv[1]: I/O address, e.g., "0x3f8"
- * argv[2]: vector, e.g., "4"
- * argv[3]: mode, may be:
- * "slip" (point-to-point SLIP)
- * "ax25" (AX.25 frame format in SLIP for raw TNC)
- * "nrs" (NET/ROM format serial protocol)
- * "ppp" (Point-to-Point Protocol, RFC1171, RFC1172)
- * argv[4]: interface label, e.g., "sl0"
- * argv[5]: receiver ring buffer size in bytes
- * argv[6]: maximum transmission unit, bytes
- * argv[7]: interface speed, e.g, "9600"
- * argv[8]: optional flags,
- * 'v' for Van Jacobson TCP header compression (SLIP only,
- * use ppp command for VJ compression with PPP);
- * 'c' for cts flow control
- * 'r' for rlsd (cd) detection
- */
- int
- asy_attach(argc,argv,p)
- int argc;
- char *argv[];
- void *p;
- {
- register struct iface *ifp;
- int dev;
- int trigchar = -1;
- int cts,rlsd;
- struct asymode *ap;
- int vj;
- char *cp;
-
- if(if_lookup(argv[4]) != NULLIF){
- printf("Interface %s already exists\n",argv[4]);
- return -1;
- }
- /* Find unused asy control block */
- for(dev=0;dev < ASY_MAX;dev++){
- if(Asy[dev].iface == NULLIF)
- break;
- }
- if(dev >= ASY_MAX){
- printf("Too many asynch controllers\n");
- return -1;
- }
-
- /* Create interface structure and fill in details */
- ifp = (struct iface *)callocw(1,sizeof(struct iface));
- ifp->addr = Ip_addr;
- ifp->name = strdup(argv[4]);
- ifp->mtu = atoi(argv[6]);
- ifp->dev = dev;
- ifp->stop = asy_detach;
- if(argc > 8 && strchr(argv[8],'v') != NULLCHAR)
- vj = 1;
- else
- vj = 0;
-
- /* Look for the interface mode in the table */
- for(ap = Asymode;ap->name != NULLCHAR;ap++){
- if(stricmp(argv[3],ap->name) == 0){
- trigchar = uchar(ap->trigchar);
- if((*ap->init)(ifp,vj) != 0){
- printf("%s: mode %s Init failed\n",
- ifp->name,argv[3]);
- if_detach(ifp);
- return -1;
- }
- break;
- }
- }
- if(ap->name == NULLCHAR){
- printf("Mode %s unknown for interface %s\n",
- argv[3],argv[4]);
- if_detach(ifp);
- return -1;
- }
- /* Link in the interface */
- ifp->next = Ifaces;
- Ifaces = ifp;
-
- cts = rlsd = 0;
- if(argc > 8){
- if(strchr(argv[8],'c') != NULLCHAR)
- cts = 1;
- if(strchr(argv[8],'r') != NULLCHAR)
- rlsd = 1;
- }
- asy_init(dev,ifp,argv[1],argv[2],(int16)atol(argv[5]),
- trigchar,(int16)atol(argv[7]),cts,rlsd);
- cp = if_name(ifp," tx");
- ifp->txproc = newproc(cp,768,if_tx,0,ifp,NULL,0);
- free(cp);
- return 0;
- }
-
- static int
- asy_detach(ifp)
- struct iface *ifp;
- {
- struct asymode *ap;
-
- if(ifp == NULLIF)
- return -1;
- asy_stop(ifp);
-
- /* Call mode-dependent routine */
- for(ap = Asymode;ap->name != NULLCHAR;ap++){
- if(ifp->iftype != NULLIFT
- && stricmp(ifp->iftype->name,ap->name) == 0
- && ap->free != NULLFP){
- (*ap->free)(ifp);
- }
- }
- return 0;
- }
-
-
-