#include "pppd.h"
#include "fsm.h"
#include "ipcp.h"
-#include "patchlevel.h"
#ifdef IPX_CHANGE
#include "ipxcp.h"
#endif
#endif /* IPX_CHANGE */
+#ifdef PPP_FILTER
+#include <net/bpf.h>
+#include <linux/filter.h>
+#endif /* PPP_FILTER */
+
#ifdef LOCKLIB
#include <sys/locks.h>
#endif
{
int flags;
- openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
- setlogmask(LOG_UPTO(LOG_INFO));
- if (debug)
- setlogmask(LOG_UPTO(LOG_DEBUG));
-
if (new_style_driver) {
ppp_dev_fd = open("/dev/ppp", O_RDWR);
if (ppp_dev_fd < 0)
#ifdef INET6
sock6_fd = socket(AF_INET6, SOCK_DGRAM, 0);
if (sock6_fd < 0)
- fatal("Couldn't create IPv6 socket: %m(%d)", errno);
+ sock6_fd = -errno; /* save errno for later */
#endif
FD_ZERO(&in_fds);
/********************************************************************
*
- * establish_ppp - Turn the serial port into a ppp interface.
+ * tty_establish_ppp - Turn the serial port into a ppp interface.
*/
-int establish_ppp (int tty_fd)
+int tty_establish_ppp (int tty_fd)
{
int x;
int fd = -1;
warn("Couldn't set /dev/ppp (channel) to nonblock: %m");
set_ppp_fd(fd);
- ifunit = -1;
+ if (!looped)
+ ifunit = -1;
if (!looped && !multilink) {
/*
* Create a new PPP unit.
*/
set_ppp_fd (tty_fd);
if (ioctl(tty_fd, PPPIOCGUNIT, &x) < 0) {
- if ( ! ok_error (errno))
- fatal("ioctl(PPPIOCGUNIT): %m(%d)", errno);
+ if (ok_error (errno))
+ goto err;
+ fatal("ioctl(PPPIOCGUNIT): %m(%d)", errno);
}
/* Check that we got the same unit again. */
if (looped && x != ifunit)
if (!looped)
set_kdebugflag (kdebugflag);
- set_flags(ppp_fd, get_flags(ppp_fd) & ~(SC_RCV_B7_0 | SC_RCV_B7_1 |
- SC_RCV_EVNP | SC_RCV_ODDP));
+#define SC_RCVB (SC_RCV_B7_0 | SC_RCV_B7_1 | SC_RCV_EVNP | SC_RCV_ODDP)
+#define SC_LOGB (SC_DEBUG | SC_LOG_INPKT | SC_LOG_OUTPKT | SC_LOG_RAWIN \
+ | SC_LOG_FLUSH)
+
+ set_flags(ppp_fd, ((get_flags(ppp_fd) & ~(SC_RCVB | SC_LOGB))
+ | ((kdebugflag * SC_DEBUG) & SC_LOGB)));
SYSDEBUG ((LOG_NOTICE, "Using version %d.%d.%d of PPP driver",
driver_version, driver_modification, driver_patch));
/********************************************************************
*
- * disestablish_ppp - Restore the serial port to normal operation.
+ * tty_disestablish_ppp - Restore the serial port to normal operation,
+ * and reconnect the ppp unit to the loopback if in demand mode.
* This shouldn't call die() because it's called from die().
*/
-void disestablish_ppp(int tty_fd)
+void tty_disestablish_ppp(int tty_fd)
{
if (!hungup) {
/*
if (new_style_driver) {
close(ppp_fd);
ppp_fd = -1;
- if (!looped && ifunit >= 0 && ioctl(ppp_dev_fd, PPPIOCDETACH) < 0)
+ if (demand) {
+ set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_LOOP_TRAFFIC);
+ looped = 1;
+ } else if (ifunit >= 0 && ioctl(ppp_dev_fd, PPPIOCDETACH) < 0)
error("Couldn't release PPP unit: %m");
if (!multilink)
remove_fd(ppp_dev_fd);
+ } else {
+ /* old-style driver */
+ if (demand)
+ set_ppp_fd(slave_fd);
}
}
}
/*
- * make_new_bundle - create a new PPP unit (i.e. a bundle)
- * and connect our channel to it. This should only get called
- * if `multilink' was set at the time establish_ppp was called.
+ * cfg_bundle - configure the existing bundle.
+ * Used in demand mode.
*/
-void make_new_bundle(int mrru, int mtru, int rssn, int tssn)
+void cfg_bundle(int mrru, int mtru, int rssn, int tssn)
{
int flags;
- struct ifreq ifr;
- if (looped || !new_style_driver)
+ if (!new_style_driver)
return;
- dbglog("make_new_bundle(%d,%d,%d,%d)", mrru, mtru, rssn, tssn);
-
- /* make us a ppp unit */
- if (make_ppp_unit() < 0)
- die(1);
/* set the mrru, mtu and flags */
if (ioctl(ppp_dev_fd, PPPIOCSMRRU, &mrru) < 0)
error("Couldn't set MRRU: %m");
flags = get_flags(ppp_dev_fd);
flags &= ~(SC_MP_SHORTSEQ | SC_MP_XSHORTSEQ);
- flags |= (rssn? SC_MP_SHORTSEQ: 0) | (tssn? SC_MP_XSHORTSEQ: 0);
-
- if (mtru > 0 && mtru != link_mtu) {
- memset(&ifr, 0, sizeof(ifr));
- slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
- ifr.ifr_mtu = mtru;
- if (ioctl(sock_fd, SIOCSIFMTU, &ifr) < 0)
- error("Couldn't set interface MTU: %m");
- flags |= SC_MULTILINK;
- }
+ flags |= (rssn? SC_MP_SHORTSEQ: 0) | (tssn? SC_MP_XSHORTSEQ: 0)
+ | (mrru? SC_MULTILINK: 0);
set_flags(ppp_dev_fd, flags);
add_fd(ppp_dev_fd);
}
+/*
+ * make_new_bundle - create a new PPP unit (i.e. a bundle)
+ * and connect our channel to it. This should only get called
+ * if `multilink' was set at the time establish_ppp was called.
+ * In demand mode this uses our existing bundle instead of making
+ * a new one.
+ */
+void make_new_bundle(int mrru, int mtru, int rssn, int tssn)
+{
+ if (!new_style_driver)
+ return;
+
+ /* make us a ppp unit */
+ if (make_ppp_unit() < 0)
+ die(1);
+
+ /* set the mrru and flags */
+ cfg_bundle(mrru, mtru, rssn, tssn);
+}
+
/*
* bundle_attach - attach our link to a given PPP unit.
+ * We assume the unit is controlled by another pppd.
*/
int bundle_attach(int ifnum)
{
set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_MULTILINK);
ifunit = ifnum;
- dbglog("bundle_attach succeeded");
return 1;
}
#ifdef B57600
{ 57600, B57600 },
#endif
+#ifdef B76800
+ { 76800, B76800 },
+#endif
#ifdef B115200
{ 115200, B115200 },
#endif
#endif
#ifdef B460800
{ 460800, B460800 },
+#endif
+#ifdef B921600
+ { 921600, B921600 },
#endif
{ 0, 0 }
};
nr = -1;
if (ppp_fd >= 0) {
nr = read(ppp_fd, buf, len);
- if (nr < 0 && errno != EWOULDBLOCK && errno != EIO)
+ if (nr < 0 && errno != EWOULDBLOCK && errno != EIO && errno != EINTR)
error("read: %m");
+ if (nr < 0 && errno == ENXIO)
+ return 0;
}
if (nr < 0 && new_style_driver && ifunit >= 0) {
/* N.B. we read ppp_fd first since LCP packets come in there. */
nr = read(ppp_dev_fd, buf, len);
- if (nr < 0 && errno != EWOULDBLOCK && errno != EIO)
+ if (nr < 0 && errno != EWOULDBLOCK && errno != EIO && errno != EINTR)
error("read /dev/ppp: %m");
+ if (nr < 0 && errno == ENXIO)
+ return 0;
}
return (new_style_driver && nr > 0)? nr+2: nr;
}
return rv;
}
-/********************************************************************
- *
- * ppp_send_config - configure the transmit characteristics of
- * the ppp interface.
+/*
+ * netif_set_mtu - set the MTU on the PPP network interface.
*/
-
-void ppp_send_config (int unit,int mtu,u_int32_t asyncmap,int pcomp,int accomp)
+void
+netif_set_mtu(int unit, int mtu)
{
- u_int x;
struct ifreq ifr;
-
- SYSDEBUG ((LOG_DEBUG, "send_config: mtu = %d\n", mtu));
-/*
- * Set the MTU and other parameters for the ppp device
- */
+
+ SYSDEBUG ((LOG_DEBUG, "netif_set_mtu: mtu = %d\n", mtu));
+
memset (&ifr, '\0', sizeof (ifr));
strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
ifr.ifr_mtu = mtu;
if (ifunit >= 0 && ioctl(sock_fd, SIOCSIFMTU, (caddr_t) &ifr) < 0)
- fatal("ioctl(SIOCSIFMTU): %m(%d)", errno);
- link_mtu = mtu;
+ fatal("ioctl(SIOCSIFMTU): %m");
+}
+
+/********************************************************************
+ *
+ * tty_send_config - configure the transmit characteristics of
+ * the ppp interface.
+ */
+void tty_send_config (int mtu,u_int32_t asyncmap,int pcomp,int accomp)
+{
+ u_int x;
+
+/*
+ * Set the asyncmap and other parameters for the ppp device
+ */
if (!still_ppp())
return;
+ link_mtu = mtu;
SYSDEBUG ((LOG_DEBUG, "send_config: asyncmap = %lx\n", asyncmap));
if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
if (!ok_error(errno))
/********************************************************************
*
- * ppp_set_xaccm - set the extended transmit ACCM for the interface.
+ * tty_set_xaccm - set the extended transmit ACCM for the interface.
*/
-void ppp_set_xaccm (int unit, ext_accm accm)
+void tty_set_xaccm (ext_accm accm)
{
SYSDEBUG ((LOG_DEBUG, "set_xaccm: %08lx %08lx %08lx %08lx\n",
accm[0], accm[1], accm[2], accm[3]));
/********************************************************************
*
- * ppp_recv_config - configure the receive-side characteristics of
+ * tty_recv_config - configure the receive-side characteristics of
* the ppp interface.
*/
-void ppp_recv_config (int unit,int mru,u_int32_t asyncmap,int pcomp,int accomp)
+void tty_recv_config (int mru,u_int32_t asyncmap,int pcomp,int accomp)
{
SYSDEBUG ((LOG_DEBUG, "recv_config: mru = %d\n", mru));
/*
void ccp_flags_set (int unit, int isopen, int isup)
{
- if (still_ppp()) {
+ if (still_ppp() && ifunit >= 0) {
int x = get_flags(ppp_dev_fd);
x = isopen? x | SC_CCP_OPEN : x &~ SC_CCP_OPEN;
x = isup? x | SC_CCP_UP : x &~ SC_CCP_UP;
}
}
+#ifdef PPP_FILTER
+/*
+ * set_filters - set the active and pass filters in the kernel driver.
+ */
+int set_filters(struct bpf_program *pass, struct bpf_program *active)
+{
+ struct sock_fprog fp;
+
+ fp.len = pass->bf_len;
+ fp.filter = (struct sock_filter *) pass->bf_insns;
+ if (ioctl(ppp_dev_fd, PPPIOCSPASS, &fp) < 0) {
+ if (errno == ENOTTY)
+ warn("kernel does not support PPP filtering");
+ else
+ error("Couldn't set pass-filter in kernel: %m");
+ return 0;
+ }
+ fp.len = active->bf_len;
+ fp.filter = (struct sock_filter *) active->bf_insns;
+ if (ioctl(ppp_dev_fd, PPPIOCSACTIVE, &fp) < 0) {
+ error("Couldn't set active-filter in kernel: %m");
+ return 0;
+ }
+ return 1;
+}
+#endif /* PPP_FILTER */
+
/********************************************************************
*
* get_idle_time - return how long the link has been idle.
}
stats->bytes_in = req.stats.p.ppp_ibytes;
stats->bytes_out = req.stats.p.ppp_obytes;
+ stats->pkts_in = req.stats.p.ppp_ipackets;
+ stats->pkts_out = req.stats.p.ppp_opackets;
return 1;
}
static void decode_version (char *buf, int *version,
int *modification, int *patch)
{
- *version = (int) strtoul (buf, &buf, 10);
+ char *endp;
+
+ *version = (int) strtoul (buf, &endp, 10);
*modification = 0;
*patch = 0;
- if (*buf == '.') {
- ++buf;
- *modification = (int) strtoul (buf, &buf, 10);
- if (*buf == '.') {
- ++buf;
+ if (endp != buf && *endp == '.') {
+ buf = endp + 1;
+ *modification = (int) strtoul (buf, &endp, 10);
+ if (endp != buf && *endp == '.') {
+ buf = endp + 1;
*patch = (int) strtoul (buf, &buf, 10);
}
}
-
- if (*buf != '\0') {
- *version =
- *modification =
- *patch = 0;
- }
}
/********************************************************************
close(fd);
return 1;
}
- if (kernel_version >= KVERSION(2,3,13))
+ if (kernel_version >= KVERSION(2,3,13)) {
+ if (errno == ENOENT)
+ no_ppp_msg =
+ "pppd is unable to open the /dev/ppp device.\n"
+ "You need to create the /dev/ppp device node by\n"
+ "executing the following command as root:\n"
+ " mknod /dev/ppp c 108 0\n";
return 0;
+ }
/*
* Open a socket for doing the ioctl operations.
struct ifreq ifr;
struct in6_rtmsg rt6;
+ if (sock6_fd < 0) {
+ errno = -sock6_fd;
+ error("IPv6 socket creation failed: %m");
+ return 0;
+ }
memset(&ifr, 0, sizeof (ifr));
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) {
struct ifreq ifr;
struct in6_ifreq ifr6;
+ if (sock6_fd < 0) {
+ errno = -sock6_fd;
+ error("IPv6 socket creation failed: %m");
+ return 0;
+ }
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) {
*slave_fdp = sfd;
if (tcgetattr(sfd, &tios) == 0) {
tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
- tios.c_cflag |= CS8 | CREAD;
- tios.c_iflag = IGNPAR | CLOCAL;
+ tios.c_cflag |= CS8 | CREAD | CLOCAL;
+ tios.c_iflag = IGNPAR;
tios.c_oflag = 0;
tios.c_lflag = 0;
if (tcsetattr(sfd, TCSAFLUSH, &tios) < 0)
return master_fd;
}
-/********************************************************************
- *
- * restore_loop - reattach the ppp unit to the loopback.
- *
- * The kernel ppp driver automatically reattaches the ppp unit to
- * the loopback if the serial port is set to a line discipline other
- * than ppp, or if it detects a modem hangup. The former will happen
- * in disestablish_ppp if the latter hasn't already happened, so we
- * shouldn't need to do anything.
- *
- * Just to be sure, set the real serial port to the normal discipline.
- */
-
-void
-restore_loop(void)
-{
- looped = 1;
- if (new_style_driver) {
- set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_LOOP_TRAFFIC);
- return;
- }
- if (ppp_fd != slave_fd) {
- (void) ioctl(ppp_fd, TIOCSETD, &tty_disc);
- set_ppp_fd(slave_fd);
- }
-}
-
/********************************************************************
*
* sifnpmode - Set the mode for handling packets for a given NP.
projects / ppp.git / blobdiff