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- /*
- * NET-2 This file contains the SLIP support for the NET-2 base
- * distribution.
- *
- * Version: @(#)slip.c 1.10 10/07/93
- *
- * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
- * Copyright 1993 MicroWalt Corporation
- *
- * Modified by Alan Cox, May 94 to cover NET-3
- *
- * This program is free software; you can redistribute it
- * and/or modify it under the terms of the GNU General
- * Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at
- * your option) any later version.
- */
- #include "config.h"
-
- #if HAVE_HWSLIP
-
- #include <sys/types.h>
- #include <sys/ioctl.h>
- #include <sys/socket.h>
- #include <linux/if.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <ctype.h>
- #include <errno.h>
- #include <fcntl.h>
- #include <string.h>
- #include <termios.h>
- #include <unistd.h>
- #include "support.h"
- #include "pathnames.h"
-
-
- /* Set the line discipline of a terminal line. */
- static int
- SLIP_set_disc(int fd, int disc)
- {
- if (ioctl(fd, TIOCSETD, &disc) < 0) {
- fprintf(stderr, "SLIP_set_disc(%d): %s\n", disc, strerror(errno));
- return(-errno);
- }
- return(0);
- }
-
-
- /* Set the encapsulation type of a terminal line. */
- static int
- SLIP_set_encap(int fd, int encap)
- {
- if (ioctl(fd, SIOCSIFENCAP, &encap) < 0) {
- fprintf(stderr, "SLIP_set_encap(%d): %s\n", encap, strerror(errno));
- return(-errno);
- }
- return(0);
- }
-
-
- /* Start the SLIP encapsulation on the file descriptor. */
- static int
- do_slip(int fd)
- {
- if (SLIP_set_disc(fd, N_SLIP) < 0) return(-1);
- if (SLIP_set_encap(fd, 0) < 0) return(-1);
- return(0);
- }
-
-
- /* Start the VJ-SLIP encapsulation on the file descriptor. */
- static int
- do_cslip(int fd)
- {
- if (SLIP_set_disc(fd, N_SLIP) < 0) return(-1);
- if (SLIP_set_encap(fd, 1) < 0) return(-1);
- return(0);
- }
-
-
- /* Start the SLIP-6 encapsulation on the file descriptor. */
- static int
- do_slip6(int fd)
- {
- if (SLIP_set_disc(fd, N_SLIP) < 0) return(-1);
- if (SLIP_set_encap(fd, 2) < 0) return(-1);
- return(0);
- }
-
-
- /* Start the VJ-SLIP-6 encapsulation on the file descriptor. */
- static int
- do_cslip6(int fd)
- {
- if (SLIP_set_disc(fd, N_SLIP) < 0) return(-1);
- if (SLIP_set_encap(fd, 3) < 0) return(-1);
- return(0);
- }
-
- /* Start adaptive encapsulation on the file descriptor. */
- static int
- do_adaptive(int fd)
- {
- if (SLIP_set_disc(fd, N_SLIP) < 0) return(-1);
- if (SLIP_set_encap(fd, 8) < 0) return(-1);
- return(0);
- }
-
-
- struct hwtype slip_hwtype = {
- "slip", "Serial Line IP", ARPHRD_SLIP, 0,
- NULL, NULL, NULL, do_slip
- };
- struct hwtype cslip_hwtype = {
- "cslip", "VJ Serial Line IP", ARPHRD_CSLIP, 0,
- NULL, NULL, NULL, do_cslip
- };
- struct hwtype slip6_hwtype = {
- "slip6", "6-bit Serial Line IP", ARPHRD_SLIP6, 0,
- NULL, NULL, NULL, do_slip6
- };
- struct hwtype cslip6_hwtype = {
- "cslip6", "VJ 6-bit Serial Line IP", ARPHRD_CSLIP6, 0,
- NULL, NULL, NULL, do_cslip6
- };
- struct hwtype adaptive_hwtype = {
- "adaptive", "Adaptive Serial Line IP", ARPHRD_ADAPT,0,
- NULL, NULL, NULL, do_adaptive
- };
-
-
- #endif /* HAVE_HWSLIP */
-