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freebsd-nq/usr.sbin/ppp/tun.c

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Add (BSD) copyright headers.
1997-12-21 12:11:13 +00:00
/*-
* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
MFMP: Make ppp multilink capable. See the file README.changes, and re-read the man page.
1998-05-21 21:49:08 +00:00
* $Id: tun.c,v 1.6.4.18 1998/05/06 23:50:22 brian Exp $
Add id strings to tun.[ch]. Don't try to open ppp.secret if we're never going to use it.
1997-11-17 00:42:41 +00:00
*/
o Move alias function pointers into loadalias.c o Move Var*Version into command.c o Remove struct pppVars (and there was much rejoicing) ! o Forward-decl some structs in .h files to avoid include ordering requirements and remove a few more redundant #includes.
1998-04-07 00:54:26 +00:00
#include <sys/types.h>
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
#include <sys/socket.h>
#include <net/if.h>
This commit was manufactured by cvs2svn to create branch 'MP'.
1998-01-29 00:44:16 +00:00
#include <netinet/in.h>
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
#include <net/if_tun.h>
Move VJ compression state and stats into struct ipcp.
1998-03-16 22:54:35 +00:00
#include <netinet/in_systm.h>
#include <netinet/ip.h>
o Add the link name to modem diagnostics. o Create struct mpserver as part of struct mp. mpserver creates a unix-domain socket based on the peers auth name and endpoint discriminator. If it already exists, ppp will ``pass the link'' over to the owner of the socket, joining it into the bundle of another ppp invocation, otherwise ppp waits for other invocations to pass it links through this socket. The final piece of code will be the code that flattens our datalink info and passes it down this channel (not yet implemented).
1998-04-28 01:25:46 +00:00
#include <sys/un.h>
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
#include <string.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
Fix prototypes. Remove extraneous decls. Add ``const'' to several places. Allow ``make NOALIAS=1'' to remove IP aliasing. Merge with OpenBSD - only the Makefiles vary. We can now survive a compile with -Wall -Wbad-function-cast -Wcast-align -Wcast-qual -Winline -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-prototypes -Wwrite-strings -Wchar-subscripts (although the Makefile just contains -Wall).
1997-11-22 03:37:54 +00:00
#include "mbuf.h"
#include "log.h"
o Create `struct hdlc' - a part of struct physical. o Move our LCP report timer into struct hdlc - it's really a hdlc timer (fcs errors etc). o Make `show hdlc' require context and make the output more friendly. o Remove all non-const globals from hdlc.c o Output peer-rejected protocols by name - not just ones that we reject.
1998-02-18 19:35:59 +00:00
#include "timer.h"
De-staticise LQR information Increment OutPackets for any packet - not just LQRs MFC: o Fix a few comment typos. o Fix ``set timeout'' usage message and documentation. o Change ifOutPackets, ifOutOctets and ifOutLQRs to `u_int32_t's so that they wrap correctly. o Put the LQR in network byte order using the correct struct size (sizeof u_int32_t, not sizeof u_long). o Wrap LQR ECHO counters correctly. o Don't increment OutLQR count if the last LQR hasn't been replied to. o Initialise last received LQR in StartLqm. o Don't start the LQR timer if we're `disabled' and `accepted'. o Generate LQR responses when both sides are using a timer and we're not going to send our next LQR before the peers max timeout.
1998-03-13 00:44:26 +00:00
#include "lqr.h"
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
#include "hdlc.h"
#include "defs.h"
Create struct fsm_parent. FSMs are created with one of these, and the FSM passes subsequent events to them. The datalink now hides its CCP from the bundle layer.
1998-02-27 01:22:39 +00:00
#include "fsm.h"
Move the IPCP into struct bundle.
1998-03-13 21:07:46 +00:00
#include "throughput.h"
#include "iplist.h"
Move VJ compression state and stats into struct ipcp.
1998-03-16 22:54:35 +00:00
#include "slcompress.h"
Move the IPCP into struct bundle.
1998-03-13 21:07:46 +00:00
#include "ipcp.h"
Move filter sets into struct bundle.
1998-03-16 22:52:54 +00:00
#include "filter.h"
Make struct bundle into a sort of `struct descriptor'. It does the fdsets/reads/writes for each of it's datalinks.
1998-03-20 19:48:28 +00:00
#include "descriptor.h"
o Move struct lcp and struct ccp into struct link. o Remove bundle2lcp(), bundle2ccp() and bundle2link(). They're too resource-hungry and we have `owner pointers' to do their job. o Make our FSM understand LCPs that are always ST_OPENED (with a minimum code that != 1). o Send FSM code rejects for invalid codes. o Make our bundle fsm_parent deal with multiple links. o Make timer diagnostics pretty and allow access via ~t in `term' mode (not just when logging debug) and `show timers'. Only show timers every second in debug mode, otherwise we get too many diagnostics to be useful (we probably still do). Also, don't restrict ~m in term mode to depend on debug logging. o Rationalise our bundles' phases. o Create struct mp (multilink protocol). This is both an NCP and a type of struct link. It feeds off other NCPs for output, passing fragmented packets into the queues of available datalinks. It also gets PROTO_MP input, reassembles the fragments into ppp frames, and passes them back to the HDLC layer that the fragments were passed from. ** It's not yet possible to enter multilink mode :-( ** o Add `set weight' (requires context) for deciding on a links weighting in multilink mode. Weighting is simplistic (and probably badly implemented) for now. o Remove the function pointers in struct link. They ended up only applying to physical links. o Configure our tun device with an MTU equal to the MRU from struct mp's LCP and a speed equal to the sum of our link speeds. o `show {lcp,ccp,proto}' and `set deflate' now have optional context and use ChooseLink() to decide on which `struct link' to use. This allows behaviour as before when in non-multilink mode, and allows access to the MP logical link in multilink mode. o Ignore reconnect and redial values when in -direct mode and when cleaning up. Always redial when in -ddial or -dedicated mode (unless cleaning up). o Tell our links to `staydown' when we close them due to a signal. o Remove remaining `#ifdef SIGALRM's (ppp doesn't function without alarms). o Don't bother strdup()ing our physical link name. o Various other cosmetic changes.
1998-04-03 19:21:56 +00:00
#include "lcp.h"
#include "ccp.h"
#include "link.h"
#include "mp.h"
Create `struct bundle' - the top level control structure. This structure will eventually contain a list of NCPs (currently only IPCP is supported) and a list of physical `struct link's. It will also derive from a struct link itself. Make ModemTimeout() static - it's way to dangerous to be called from outside ! Bump version to 1.9. Our first MP release should be 2.0.
1998-02-02 19:32:16 +00:00
#include "bundle.h"
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
#include "tun.h"
void
Categorize the fields in struct bundle, and make the tunnel device speed available in ``show bundle''.
1998-05-06 23:50:25 +00:00
tun_configure(struct bundle *bundle, int mtu)
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
{
struct tuninfo info;
info.type = 23;
info.mtu = mtu;
Categorize the fields in struct bundle, and make the tunnel device speed available in ``show bundle''.
1998-05-06 23:50:25 +00:00
info.baudrate = bundle->ifp.Speed;
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
#ifdef __OpenBSD__
info.flags = IFF_UP|IFF_POINTOPOINT;
#endif
Categorize the fields in struct bundle, and make the tunnel device speed available in ``show bundle''.
1998-05-06 23:50:25 +00:00
if (ioctl(bundle->dev.fd, TUNSIFINFO, &info) < 0)
Cosmetic: Make our external function names consistent.
1998-05-01 19:26:12 +00:00
log_Printf(LogERROR, "tun_configure: ioctl(TUNSIFINFO): %s\n",
Abstract data read from and written to the tun device, allowing for a possible header on the front of all packets. In OpenBSD, there's a structure containing the address family here. If we're building under OpenBSD, set up the ``flags'' part of struct tuninfo (not there under FreeBSD) so that we config the interface as POINTOPOINT. Prefix prototypes with ``extern'' in os.c for consistency. These changes are cosmetic under FreeBSD, but allow ppp to build & work under OpenBSD (bar the srandomdev() stuff, the inclusing of <net/if_var.h> and some Makefile symantecs).
1997-11-16 22:15:11 +00:00
strerror(errno));
}
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