diff options
Diffstat (limited to 'cpukit/pppd/sys-rtems.c')
| -rw-r--r-- | cpukit/pppd/sys-rtems.c | 1321 |
1 files changed, 0 insertions, 1321 deletions
diff --git a/cpukit/pppd/sys-rtems.c b/cpukit/pppd/sys-rtems.c deleted file mode 100644 index f973795b2c..0000000000 --- a/cpukit/pppd/sys-rtems.c +++ /dev/null @@ -1,1321 +0,0 @@ -/* - * sys-bsd.c - System-dependent procedures for setting up - * PPP interfaces on bsd-4.4-ish systems (including 386BSD, NetBSD, etc.) - * - * Copyright (c) 1989 Carnegie Mellon University. - * Copyright (c) 1995 The Australian National University. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by Carnegie Mellon University and The Australian National University. - * The names of the Universities may not be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> -#include <fcntl.h> -#include <termios.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <sys/stat.h> -#include <sys/param.h> -#ifdef PPP_FILTER -#include <net/bpf.h> -#endif - -#include <net/if.h> -#include <net/ppp_defs.h> -#include <net/if_ppp.h> -#include <net/route.h> -#include <net/if_dl.h> -#include <netinet/in.h> - -#if RTM_VERSION >= 3 -#include <sys/param.h> -#if defined(NetBSD) && (NetBSD >= 199703) -#include <netinet/if_inarp.h> -#else /* NetBSD 1.2D or later */ -#include <netinet/if_ether.h> -#endif -#endif - -#include <rtems.h> -#include <rtems/rtems_bsdnet.h> -#include <rtems/termiostypes.h> -extern int rtems_bsdnet_microseconds_per_tick; -extern rtems_id rtems_pppd_taskid; - -#include "pppd.h" -#include "fsm.h" -#include "ipcp.h" - -static int initdisc = -1; /* Initial TTY discipline for ppp_fd */ -static int initfdflags = -1; /* Initial file descriptor flags for ppp_fd */ -static int ppp_fd = -1; /* fd which is set to PPP discipline */ -static int rtm_seq; - -static int restore_term; /* 1 => we've munged the terminal */ -static struct termios inittermios; /* Initial TTY termios */ -static struct winsize wsinfo; /* Initial window size info */ - -static int loop_slave = -1; -static int loop_master; - -static unsigned char inbuf[512]; /* buffer for chars read from loopback */ - -static int sockfd; /* socket for doing interface ioctls */ - -static int if_is_up; /* the interface is currently up */ -static uint32_t ifaddrs[2]; /* local and remote addresses we set */ -static uint32_t default_route_gateway; /* gateway addr for default route */ -static uint32_t proxy_arp_addr; /* remote addr for proxy arp */ - -/* Prototypes for procedures local to this file. */ -static int dodefaultroute(uint32_t, int); -static int get_ether_addr(uint32_t, struct sockaddr_dl *); - - -/* - * sys_init - System-dependent initialization. - */ -void -sys_init(void) -{ - /* Get an internet socket for doing socket ioctl's on. */ - if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) - fatal("Couldn't create IP socket: %m"); -} - -/* - * sys_cleanup - restore any system state we modified before exiting: - * mark the interface down, delete default route and/or proxy arp entry. - * This should call die() because it's called from die(). - */ -void -sys_cleanup(void) -{ - struct ifreq ifr; - - if (if_is_up) { - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0 - && ((ifr.ifr_flags & IFF_UP) != 0)) { - ifr.ifr_flags &= ~IFF_UP; - ioctl(sockfd, SIOCSIFFLAGS, &ifr); - } - } - if (ifaddrs[0] != 0) - cifaddr(0, ifaddrs[0], ifaddrs[1]); - if (default_route_gateway) - cifdefaultroute(0, 0, default_route_gateway); - if (proxy_arp_addr) - cifproxyarp(0, proxy_arp_addr); -} - -/* - * sys_close - Clean up in a child process before execing. - */ -void -sys_close(void) -{ - close(sockfd); - if (loop_slave >= 0) { - close(loop_slave); - close(loop_master); - } -} - -/* - * sys_check_options - check the options that the user specified - */ -int -sys_check_options(void) -{ - return 1; -} - -/* - * ppp_available - check whether the system has any ppp interfaces - * (in fact we check whether we can do an ioctl on ppp0). - */ -int -ppp_available(void) -{ - int s, ok; - struct ifreq ifr; - - if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) - return 1; /* can't tell */ - - strlcpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name)); - ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0; - close(s); - - return ok; -} - -/* - * establish_ppp - Turn the serial port into a ppp interface. - */ -int -establish_ppp( - int fd) -{ - int taskid = (int)rtems_pppd_taskid; - int pppdisc = PPPDISC; - int x; - - if (demand) { - /* - * Demand mode - prime the old ppp device to relinquish the unit. - */ - if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) - fatal("ioctl(transfer ppp unit): %m"); - } - - /* - * Save the old line discipline of fd, and set it to PPP. - */ - if (ioctl(fd, TIOCGETD, &initdisc) < 0) - fatal("ioctl(TIOCGETD): %m"); - if (ioctl(fd, TIOCSETD, &pppdisc) < 0) - fatal("ioctl(TIOCSETD): %m"); - - /* set pppd taskid into the driver */ - ioctl(fd, PPPIOCSTASK, &taskid); - - if (!demand) { - /* - * Find out which interface we were given. - */ - if (ioctl(fd, PPPIOCGUNIT, &pppifunit) < 0) - fatal("ioctl(PPPIOCGUNIT): %m"); - } else { - /* - * Check that we got the same unit again. - */ - if (ioctl(fd, PPPIOCGUNIT, &x) < 0) - fatal("ioctl(PPPIOCGUNIT): %m"); - if (x != pppifunit) - fatal("transfer_ppp failed: wanted unit %d, got %d", pppifunit, x); - x = TTYDISC; - ioctl(loop_slave, TIOCSETD, &x); - } - - ppp_fd = fd; - - /* - * Enable debug in the driver if requested. - */ - if (kdebugflag) { - if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { - warn("ioctl (PPPIOCGFLAGS): %m"); - } else { - x |= (kdebugflag & 0xFF) * SC_DEBUG; - if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) - warn("ioctl(PPPIOCSFLAGS): %m"); - } - } - - /* - * Set device for non-blocking reads. - */ - if ((initfdflags = fcntl(fd, F_GETFL)) == -1 - || fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) { - warn("Couldn't set device to non-blocking mode: %m"); - } - - return fd; -} - -/* - * restore_loop - reattach the ppp unit to the loopback. - */ -void -restore_loop(void) -{ - int x; - - /* - * Transfer the ppp interface back to the loopback. - */ - if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) - fatal("ioctl(transfer ppp unit): %m"); - x = PPPDISC; - if (ioctl(loop_slave, TIOCSETD, &x) < 0) - fatal("ioctl(TIOCSETD): %m"); - - /* - * Check that we got the same unit again. - */ - if (ioctl(loop_slave, PPPIOCGUNIT, &x) < 0) - fatal("ioctl(PPPIOCGUNIT): %m"); - if (x != pppifunit) - fatal("transfer_ppp failed: wanted unit %d, got %d", pppifunit, x); - ppp_fd = loop_slave; -} - - -/* - * disestablish_ppp - Restore the serial port to normal operation. - * This shouldn't call die() because it's called from die(). - */ -void -disestablish_ppp( - int fd) -{ - int taskid = (int)0; - - /* clear pppd taskid from the driver */ - ioctl(fd, PPPIOCSTASK, &taskid); - - /* Reset non-blocking mode on fd. */ - if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0) - warn("Couldn't restore device fd flags: %m"); - initfdflags = -1; - - /* Restore old line discipline. */ - if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0) - error("ioctl(TIOCSETD): %m"); - initdisc = -1; - - if (fd == ppp_fd) - ppp_fd = -1; -} - -/* - * Check whether the link seems not to be 8-bit clean. - */ -void -clean_check(void) -{ - int x; - char *s; - - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) { - s = NULL; - switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) { - case SC_RCV_B7_0: - s = "bit 7 set to 1"; - break; - case SC_RCV_B7_1: - s = "bit 7 set to 0"; - break; - case SC_RCV_EVNP: - s = "odd parity"; - break; - case SC_RCV_ODDP: - s = "even parity"; - break; - } - if (s != NULL) { - warn("Serial link is not 8-bit clean:"); - warn("All received characters had %s", s); - } - } -} - -/* - * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, - * at the requested speed, etc. If `local' is true, set CLOCAL - * regardless of whether the modem option was specified. - * - * For *BSD, we assume that speed_t values numerically equal bits/second. - */ -void -set_up_tty( - int fd, int local) -{ - struct termios tios; - - if (tcgetattr(fd, &tios) < 0) - fatal("tcgetattr: %m"); - - if (!restore_term) { - inittermios = tios; - ioctl(fd, TIOCGWINSZ, &wsinfo); - } - - tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); - if (crtscts > 0 && !local) { - if (crtscts == 2) { -#ifdef CDTRCTS - tios.c_cflag |= CDTRCTS; -#endif - } else - tios.c_cflag |= CRTSCTS; - } else if (crtscts < 0) { - tios.c_cflag &= ~CRTSCTS; -#ifdef CDTRCTS - tios.c_cflag &= ~CDTRCTS; -#endif - } - - tios.c_cflag |= CS8 | CREAD | HUPCL; - if (local || !modem) - tios.c_cflag |= CLOCAL; - tios.c_iflag = IGNBRK | IGNPAR; - tios.c_oflag = 0; - tios.c_lflag = 0; - tios.c_cc[VMIN] = 1; - tios.c_cc[VTIME] = 0; - - if (crtscts == -2) { - tios.c_iflag |= IXON | IXOFF; - tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */ - tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */ - } - - if (inspeed) { - cfsetospeed(&tios, inspeed); - cfsetispeed(&tios, inspeed); - } else { - inspeed = cfgetospeed(&tios); - /* - * We can't proceed if the serial port speed is 0, - * since that implies that the serial port is disabled. - */ - if (inspeed == 0) - fatal("Baud rate for %s is 0; need explicit baud rate", devnam); - } - baud_rate = inspeed; - -/* if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) { */ - if (tcsetattr(fd, TCSADRAIN, &tios) < 0) { - fatal("tcsetattr: %m"); - } - - restore_term = 1; -} - -/* - * restore_tty - restore the terminal to the saved settings. - */ -void -restore_tty( - int fd) -{ - if (restore_term) { - if (!default_device) { - /* - * Turn off echoing, because otherwise we can get into - * a loop with the tty and the modem echoing to each other. - * We presume we are the sole user of this tty device, so - * when we close it, it will revert to its defaults anyway. - */ - inittermios.c_lflag &= ~(ECHO | ECHONL); - } -/* if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0) { */ - if (tcsetattr(fd, TCSADRAIN, &inittermios) < 0) { - if (errno != ENXIO) - warn("tcsetattr: %m"); - } - ioctl(fd, TIOCSWINSZ, &wsinfo); - restore_term = 0; - } -} - -/* - * setdtr - control the DTR line on the serial port. - * This is called from die(), so it shouldn't call die(). - */ -void -setdtr( - int fd, int on ) -{ - int modembits = TIOCM_DTR; - - ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); -} - - -/* - * open_ppp_loopback - open the device we use for getting - * packets in demand mode, and connect it to a ppp interface. - * Here we use a pty. - */ -int -open_ppp_loopback(void) -{ - return loop_master; -} - - -/* - * output - Output PPP packet. - */ -void -output( - int unit, - u_char *p, - int len) -{ - if (debug) - dbglog("sent %P", p, len); -/* printf("sent packet [%d]\n", len); */ - - if (write(pppd_ttyfd, p, len) < 0) { - if (errno != EIO) - error("write: %m"); - } -} - -void -ppp_delay(void) -{ - rtems_interval ticks; - - /* recommended delay to help negotiation */ - ticks = 300000/rtems_bsdnet_microseconds_per_tick; - rtems_task_wake_after(ticks); -} - -/* - * wait_input - wait until there is data available, - * for the length of time specified by *timo (indefinite - * if timo is NULL). - */ -void -wait_input( - struct timeval *timo) -{ - rtems_event_set events; - rtems_interval ticks = 0; - rtems_option wait = RTEMS_WAIT; - - if(timo) { - if(timo->tv_sec == 0 && timo->tv_usec == 0) - wait = RTEMS_NO_WAIT; - else { - ticks = (timo->tv_sec * 1000000 + timo->tv_usec) / - rtems_bsdnet_microseconds_per_tick; - if(ticks <= 0) - ticks = 1; - } - } - rtems_event_receive(RTEMS_EVENT_31, RTEMS_EVENT_ANY | wait, ticks, &events); -} - -/* - * read_packet - get a PPP packet from the serial device. - */ -int -read_packet( - u_char *buf) -{ - int len; - - if ((len = read(pppd_ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) { - if (errno == EWOULDBLOCK || errno == EINTR) len = -1; - /*fatal("read: %m"); */ - } - -/* printf("read packet [%d]\n", len); */ - return len; -} - - -/* - * get_loop_output - read characters from the loopback, form them - * into frames, and detect when we want to bring the real link up. - * Return value is 1 if we need to bring up the link, 0 otherwise. - */ -int -get_loop_output(void) -{ - int rv = 0; - int n; - - while ((n = read(loop_master, inbuf, sizeof(inbuf))) >= 0) { - if (loop_chars(inbuf, n)) - rv = 1; - } - - if (n == 0) - fatal("eof on loopback"); - if (errno != EWOULDBLOCK) - fatal("read from loopback: %m"); - - return rv; -} - - -/* - * ppp_send_config - configure the transmit characteristics of - * the ppp interface. - */ -void -ppp_send_config( - int unit, - int mtu, - uint32_t asyncmap, - int pcomp, - int accomp) -{ - u_int x; - struct ifreq ifr; - - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - ifr.ifr_mtu = mtu; - if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) - fatal("ioctl(SIOCSIFMTU): %m"); - - if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) - fatal("ioctl(PPPIOCSASYNCMAP): %m"); - - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) - fatal("ioctl (PPPIOCGFLAGS): %m"); - x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT; - x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC; -/* x = sync_serial ? x | SC_SYNC : x & ~SC_SYNC; */ - if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) - fatal("ioctl(PPPIOCSFLAGS): %m"); -} - - -/* - * ppp_set_xaccm - set the extended transmit ACCM for the interface. - */ -void -ppp_set_xaccm( - int unit, - ext_accm accm) -{ - if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY) - warn("ioctl(set extended ACCM): %m"); -} - - -/* - * ppp_recv_config - configure the receive-side characteristics of - * the ppp interface. - */ -void -ppp_recv_config( - int unit, - int mru, - uint32_t asyncmap, - int pcomp, int accomp) -{ - int x; - - if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) - fatal("ioctl(PPPIOCSMRU): %m"); - if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) - fatal("ioctl(PPPIOCSRASYNCMAP): %m"); - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) - fatal("ioctl (PPPIOCGFLAGS): %m"); - x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC; - if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) - fatal("ioctl(PPPIOCSFLAGS): %m"); -} - -/* - * ccp_test - ask kernel whether a given compression method - * is acceptable for use. Returns 1 if the method and parameters - * are OK, 0 if the method is known but the parameters are not OK - * (e.g. code size should be reduced), or -1 if the method is unknown. - */ -int -ccp_test( - int unit, u_char *opt_ptr, int opt_len, int for_transmit) -{ - struct ppp_option_data data; - - data.ptr = opt_ptr; - data.length = opt_len; - data.transmit = for_transmit; - if (ioctl(pppd_ttyfd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0) - return 1; - return (errno == ENOBUFS)? 0: -1; -} - -/* - * ccp_flags_set - inform kernel about the current state of CCP. - */ -void -ccp_flags_set( - int unit, int isopen, int isup) -{ - int x; - - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { - error("ioctl (PPPIOCGFLAGS): %m"); - return; - } - x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN; - x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP; - if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) - error("ioctl(PPPIOCSFLAGS): %m"); -} - -/* - * ccp_fatal_error - returns 1 if decompression was disabled as a - * result of an error detected after decompression of a packet, - * 0 otherwise. This is necessary because of patent nonsense. - */ -int -ccp_fatal_error( - int unit) -{ - int x; - - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { - error("ioctl(PPPIOCGFLAGS): %m"); - return 0; - } - return x & SC_DC_FERROR; -} - -/* - * get_idle_time - return how long the link has been idle. - */ -int -get_idle_time( - int u, - struct ppp_idle *ip) -{ - return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0; -} - -/* - * get_ppp_stats - return statistics for the link. - */ -int -get_ppp_stats( - int u, - struct pppd_stats *stats) -{ - struct ifpppstatsreq req; - - memset (&req, 0, sizeof (req)); - strlcpy(req.ifr_name, ifname, sizeof(req.ifr_name)); - if (ioctl(sockfd, SIOCGPPPSTATS, &req) < 0) { - error("Couldn't get PPP statistics: %m"); - return 0; - } - stats->bytes_in = req.stats.p.ppp_ibytes; - stats->bytes_out = req.stats.p.ppp_obytes; - return 1; -} - - -#ifdef PPP_FILTER -/* - * set_filters - transfer the pass and active filters to the kernel. - */ -int -set_filters( - struct bpf_program *pass, struct bpf_program *active) -{ - int ret = 1; - - if (pass->bf_len > 0) { - if (ioctl(ppp_fd, PPPIOCSPASS, pass) < 0) { - error("Couldn't set pass-filter in kernel: %m"); - ret = 0; - } - } - if (active->bf_len > 0) { - if (ioctl(ppp_fd, PPPIOCSACTIVE, active) < 0) { - error("Couldn't set active-filter in kernel: %m"); - ret = 0; - } - } - return ret; -} -#endif - -/* - * sifvjcomp - config tcp header compression - */ -int -sifvjcomp( - int u, int vjcomp, int cidcomp, int maxcid) -{ - u_int x; - - if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) { - error("ioctl (PPPIOCGFLAGS): %m"); - return 0; - } - x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP; - x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID; - if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) { - error("ioctl(PPPIOCSFLAGS): %m"); - return 0; - } - if (vjcomp && ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) { - error("ioctl(PPPIOCSMAXCID): %m"); - return 0; - } - return 1; -} - -/* - * sifup - Config the interface up and enable IP packets to pass. - */ -int -sifup( - int u) -{ - struct ifreq ifr; - - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { - error("ioctl (SIOCGIFFLAGS): %m"); - return 0; - } - ifr.ifr_flags |= IFF_UP; - if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { - error("ioctl(SIOCSIFFLAGS): %m"); - return 0; - } - if_is_up = 1; - return 1; -} - -/* - * sifnpmode - Set the mode for handling packets for a given NP. - */ -int -sifnpmode( - int u, - int proto, - enum NPmode mode) -{ - struct npioctl npi; - - npi.protocol = proto; - npi.mode = mode; - if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) { - error("ioctl(set NP %d mode to %d): %m", proto, mode); - return 0; - } - return 1; -} - -/* - * sifdown - Config the interface down and disable IP. - */ -int -sifdown( - int u) -{ - struct ifreq ifr; - int rv; - struct npioctl npi; - - rv = 1; - npi.protocol = PPP_IP; - npi.mode = NPMODE_ERROR; - ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi); - /* ignore errors, because ppp_fd might have been closed by now. */ - - strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { - error("ioctl (SIOCGIFFLAGS): %m"); - rv = 0; - } else { - ifr.ifr_flags &= ~IFF_UP; - if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { - error("ioctl(SIOCSIFFLAGS): %m"); - rv = 0; - } else - if_is_up = 0; - } - return rv; -} - -/* - * SET_SA_FAMILY - set the sa_family field of a struct sockaddr, - * if it exists. - */ -#define SET_SA_FAMILY(addr, family) \ - BZERO((char *) &(addr), sizeof(addr)); \ - addr.sa_family = (family); \ - addr.sa_len = sizeof(addr); - -/* - * sifaddr - Config the interface IP addresses and netmask. - */ -int -sifaddr( - int u, - uint32_t o, uint32_t h, uint32_t m ) -{ - struct ifaliasreq ifra; - struct ifreq ifr; - - strlcpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name)); - SET_SA_FAMILY(ifra.ifra_addr, AF_INET); - ((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o; - SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET); - ((struct sockaddr_in *) &ifra.ifra_broadaddr)->sin_addr.s_addr = h; - if (m != 0) { - SET_SA_FAMILY(ifra.ifra_mask, AF_INET); - ((struct sockaddr_in *) &ifra.ifra_mask)->sin_addr.s_addr = m; - } else - BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask)); - BZERO(&ifr, sizeof(ifr)); - strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); - if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifr) < 0) { - if (errno != EADDRNOTAVAIL) - warn("Couldn't remove interface address: %m"); - } - if (ioctl(sockfd, SIOCAIFADDR, (caddr_t) &ifra) < 0) { - if (errno != EEXIST) { - error("Couldn't set interface address: %m"); - return 0; - } - warn("Couldn't set interface address: Address %I already exists", o); - } - ifaddrs[0] = o; - ifaddrs[1] = h; - return 1; -} - -/* - * cifaddr - Clear the interface IP addresses, and delete routes - * through the interface if possible. - */ -int -cifaddr( - int u, - uint32_t o, uint32_t h ) -{ - struct ifaliasreq ifra; - - ifaddrs[0] = 0; - strlcpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name)); - SET_SA_FAMILY(ifra.ifra_addr, AF_INET); - ((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o; - SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET); - ((struct sockaddr_in *) &ifra.ifra_broadaddr)->sin_addr.s_addr = h; - BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask)); - if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifra) < 0) { - if (errno != EADDRNOTAVAIL) - warn("Couldn't delete interface address: %m"); - return 0; - } - return 1; -} - -/* - * sifdefaultroute - assign a default route through the address given. - */ -int -sifdefaultroute( - int u, - uint32_t l, uint32_t g) -{ - return dodefaultroute(g, 's'); -} - -/* - * cifdefaultroute - delete a default route through the address given. - */ -int -cifdefaultroute( - int u, - uint32_t l, uint32_t g) -{ - return dodefaultroute(g, 'c'); -} - -/* - * dodefaultroute - talk to a routing socket to add/delete a default route. - */ -static int -dodefaultroute( - uint32_t g, - int cmd) -{ -/* int status; */ - struct sockaddr_in address; - struct sockaddr_in netmask; - struct sockaddr_in gateway; - - memset((void *) &address, 0, sizeof(address)); - address.sin_len = sizeof address; - address.sin_family = AF_INET; - address.sin_addr.s_addr = INADDR_ANY; - - memset((void *) &netmask, 0, sizeof(netmask)); - netmask.sin_len = sizeof netmask; - netmask.sin_addr.s_addr = INADDR_ANY; - netmask.sin_family = AF_INET; - - if (cmd=='s') { - memset((void *) &gateway, 0, sizeof(gateway)); - gateway.sin_len = sizeof gateway; - gateway.sin_family = AF_INET; - gateway.sin_addr.s_addr = g; - - rtems_bsdnet_rtrequest(RTM_ADD, - (struct sockaddr *)&address, - (struct sockaddr *)&gateway, - (struct sockaddr *)&netmask, - (RTF_UP|RTF_GATEWAY|RTF_STATIC), NULL); - } - else { - memset((void *) &gateway, 0, sizeof(gateway)); - gateway.sin_len = sizeof gateway; - gateway.sin_family = AF_INET; - gateway.sin_addr.s_addr = INADDR_ANY; - - rtems_bsdnet_rtrequest(RTM_DELETE, - (struct sockaddr *)&address, - (struct sockaddr *)&gateway, - (struct sockaddr *)&netmask, - (RTF_UP|RTF_STATIC), NULL); - } - - default_route_gateway = (cmd == 's')? g: 0; - - return 1; -} - -#if RTM_VERSION >= 3 - -/* - * sifproxyarp - Make a proxy ARP entry for the peer. - */ -static struct { - struct rt_msghdr hdr; - struct sockaddr_inarp dst; - struct sockaddr_dl hwa; - char extra[128]; -} arpmsg; - -static int arpmsg_valid; - -int -sifproxyarp( - int unit, - uint32_t hisaddr) -{ - int routes; - - /* - * Get the hardware address of an interface on the same subnet - * as our local address. - */ - memset(&arpmsg, 0, sizeof(arpmsg)); - if (!get_ether_addr(hisaddr, &arpmsg.hwa)) { - error("Cannot determine ethernet address for proxy ARP"); - return 0; - } - - if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) { - error("Couldn't add proxy arp entry: socket: %m"); - return 0; - } - - arpmsg.hdr.rtm_type = RTM_ADD; - arpmsg.hdr.rtm_flags = RTF_ANNOUNCE | RTF_HOST | RTF_STATIC; - arpmsg.hdr.rtm_version = RTM_VERSION; - arpmsg.hdr.rtm_seq = ++rtm_seq; - arpmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY; - arpmsg.hdr.rtm_inits = RTV_EXPIRE; - arpmsg.dst.sin_len = sizeof(struct sockaddr_inarp); - arpmsg.dst.sin_family = AF_INET; - arpmsg.dst.sin_addr.s_addr = hisaddr; - arpmsg.dst.sin_other = SIN_PROXY; - - arpmsg.hdr.rtm_msglen = (char *) &arpmsg.hwa - (char *) &arpmsg - + arpmsg.hwa.sdl_len; - if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) { - error("Couldn't add proxy arp entry: %m"); - close(routes); - return 0; - } - - close(routes); - arpmsg_valid = 1; - proxy_arp_addr = hisaddr; - return 1; -} - -/* - * cifproxyarp - Delete the proxy ARP entry for the peer. - */ -int -cifproxyarp( - int unit, - uint32_t hisaddr) -{ - int routes; - - if (!arpmsg_valid) - return 0; - arpmsg_valid = 0; - - arpmsg.hdr.rtm_type = RTM_DELETE; - arpmsg.hdr.rtm_seq = ++rtm_seq; - - if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) { - error("Couldn't delete proxy arp entry: socket: %m"); - return 0; - } - - if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) { - error("Couldn't delete proxy arp entry: %m"); - close(routes); - return 0; - } - - close(routes); - proxy_arp_addr = 0; - return 1; -} - -#else /* RTM_VERSION */ - -/* - * sifproxyarp - Make a proxy ARP entry for the peer. - */ -int -sifproxyarp( - int unit, - uint32_t hisaddr) -{ - struct arpreq arpreq; - struct { - struct sockaddr_dl sdl; - char space[128]; - } dls; - - BZERO(&arpreq, sizeof(arpreq)); - - /* - * Get the hardware address of an interface on the same subnet - * as our local address. - */ - if (!get_ether_addr(hisaddr, &dls.sdl)) { - error("Cannot determine ethernet address for proxy ARP"); - return 0; - } - - arpreq.arp_ha.sa_len = sizeof(struct sockaddr); - arpreq.arp_ha.sa_family = AF_UNSPEC; - BCOPY(LLADDR(&dls.sdl), arpreq.arp_ha.sa_data, dls.sdl.sdl_alen); - SET_SA_FAMILY(arpreq.arp_pa, AF_INET); - ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr; - arpreq.arp_flags = ATF_PERM | ATF_PUBL; - if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) { - error("Couldn't add proxy arp entry: %m"); - return 0; - } - - proxy_arp_addr = hisaddr; - return 1; -} - -/* - * cifproxyarp - Delete the proxy ARP entry for the peer. - */ -int -cifproxyarp( - int unit, - uint32_t hisaddr) -{ - struct arpreq arpreq; - - BZERO(&arpreq, sizeof(arpreq)); - SET_SA_FAMILY(arpreq.arp_pa, AF_INET); - ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr; - if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) { - warn("Couldn't delete proxy arp entry: %m"); - return 0; - } - proxy_arp_addr = 0; - return 1; -} -#endif /* RTM_VERSION */ - - -/* - * get_ether_addr - get the hardware address of an interface on the - * the same subnet as ipaddr. - */ -#define MAX_IFS 32 - -static int -get_ether_addr( - uint32_t ipaddr, - struct sockaddr_dl *hwaddr) -{ - struct ifreq *ifr, *ifend, *ifp; - uint32_t ina, mask; - struct sockaddr_dl *dla; - struct ifreq ifreq; - struct ifconf ifc; - struct ifreq ifs[MAX_IFS]; - - ifc.ifc_len = sizeof(ifs); - ifc.ifc_req = ifs; - if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) { - error("ioctl(SIOCGIFCONF): %m"); - return 0; - } - - /* - * Scan through looking for an interface with an Internet - * address on the same subnet as `ipaddr'. - */ - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *) - ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len)) { - if (ifr->ifr_addr.sa_family == AF_INET) { - ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr; - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - /* - * Check that the interface is up, and not point-to-point - * or loopback. - */ - if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - if ((ifreq.ifr_flags & - (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) - != (IFF_UP|IFF_BROADCAST)) - continue; - /* - * Get its netmask and check that it's on the right subnet. - */ - if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr; - if ((ipaddr & mask) != (ina & mask)) - continue; - - break; - } - } - - if (ifr >= ifend) - return 0; - info("found interface %s for proxy arp", ifr->ifr_name); - - /* - * Now scan through again looking for a link-level address - * for this interface. - */ - ifp = ifr; - for (ifr = ifc.ifc_req; ifr < ifend; ) { - if (strcmp(ifp->ifr_name, ifr->ifr_name) == 0 - && ifr->ifr_addr.sa_family == AF_LINK) { - /* - * Found the link-level address - copy it out - */ - dla = (struct sockaddr_dl *) &ifr->ifr_addr; - BCOPY(dla, hwaddr, dla->sdl_len); - return 1; - } - ifr = (struct ifreq *) ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len); - } - - return 0; -} - -/* - * Return user specified netmask, modified by any mask we might determine - * for address `addr' (in network byte order). - * Here we scan through the system's list of interfaces, looking for - * any non-point-to-point interfaces which might appear to be on the same - * network as `addr'. If we find any, we OR in their netmask to the - * user-specified netmask. - */ -uint32_t -GetMask( - uint32_t addr) -{ - uint32_t mask, nmask, ina; - struct ifreq *ifr, *ifend, ifreq; - struct ifconf ifc; - struct ifreq ifs[MAX_IFS]; - - addr = ntohl(addr); - if (IN_CLASSA(addr)) /* determine network mask for address class */ - nmask = IN_CLASSA_NET; - else if (IN_CLASSB(addr)) - nmask = IN_CLASSB_NET; - else - nmask = IN_CLASSC_NET; - /* class D nets are disallowed by bad_ip_adrs */ - mask = netmask | htonl(nmask); - - /* - * Scan through the system's network interfaces. - */ - ifc.ifc_len = sizeof(ifs); - ifc.ifc_req = ifs; - if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) { - warn("ioctl(SIOCGIFCONF): %m"); - return mask; - } - ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); - for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *) - ((char *)&ifr->ifr_addr + ifr->ifr_addr.sa_len)) { - /* - * Check the interface's internet address. - */ - if (ifr->ifr_addr.sa_family != AF_INET) - continue; - ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr; - if ((ntohl(ina) & nmask) != (addr & nmask)) - continue; - /* - * Check that the interface is up, and not point-to-point or loopback. - */ - strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); - if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK)) - != IFF_UP) - continue; - /* - * Get its netmask and OR it into our mask. - */ - if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr; - } - - return mask; -} - -/* - * have_route_to - determine if the system has any route to - * a given IP address. - * For demand mode to work properly, we have to ignore routes - * through our own interface. - */ -int have_route_to(uint32_t addr) -{ - return -1; -} - -/* - * Use the hostid as part of the random number seed. - */ -int -get_host_seed(void) -{ - return 17; -} |