89ce3ea906
being the same as the previous (still supported) ``host:port'' syntax for tcp socket devices. A udp device uses synchronous ppp rather than async, and avoids the double-retransmit overhead that comes with ppp over tcp (it's usually a bad idea to transport IP over a reliable transport that itself is using an unreliable transport). PPP over UDP provides througput of ** 1.5Mb per second ** with all compression disabled, maxing out a PPro/200 when running ppp twice, back-to-back. This proves that PPPoE is plausable in userland.... This change adds a few more handler functions to struct device and allows derivations of struct device (which may contain their own data etc) to pass themselves through the unix domain socket for MP. ** At last **, struct physical has lost all the tty crud ! iov2physical() is now smart enough to restore the correct stack of layers so that MP servers will work again. The version number has bumped as our MP link transfer contents have changed (they now may contain a `struct device'). Don't extract the protocol twice in MP mode (resulting in protocol rejects for every MP packet). This was broken with my original layering changes. Add ``Physical'' and ``Sync'' log levels for logging the relevent raw packets and add protocol-tracking LogDEBUG stuff in various LayerPush & LayerPull functions. Assign our physical device name for incoming tcp connections by calling getpeername(). Assign our physical device name for incoming udp connections from the address retrieved by the first recvfrom().
139 lines
5.2 KiB
C
139 lines
5.2 KiB
C
/*
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* Written by Eivind Eklund <eivind@yes.no>
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* for Yes Interactive
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*
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* Copyright (C) 1998, Yes Interactive. All rights reserved.
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*
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* Redistribution and use in any form is permitted. Redistribution in
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* source form should include the above copyright and this set of
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* conditions, because large sections american law seems to have been
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* created by a bunch of jerks on drugs that are now illegal, forcing
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* me to include this copyright-stuff instead of placing this in the
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* public domain. The name of of 'Yes Interactive' or 'Eivind Eklund'
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* may not be used to endorse or promote products derived from this
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* software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: physical.h,v 1.9 1999/05/08 11:07:24 brian Exp $
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*
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*/
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struct datalink;
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struct bundle;
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struct iovec;
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struct physical;
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struct bundle;
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struct ccp;
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struct cmdargs;
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#define TTY_DEVICE 1
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#define TCP_DEVICE 2
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#define UDP_DEVICE 3
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#define EXEC_DEVICE 4
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struct device {
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int type;
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const char *name;
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int (*raw)(struct physical *);
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void (*offline)(struct physical *);
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void (*cooked)(struct physical *);
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void (*stoptimer)(struct physical *);
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void (*destroy)(struct physical *);
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ssize_t (*read)(struct physical *, void *, size_t);
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ssize_t (*write)(struct physical *, const void *, size_t);
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void (*device2iov)(struct physical *, struct iovec *, int *, int, pid_t);
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int (*speed)(struct physical *);
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const char *(*openinfo)(struct physical *);
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};
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struct physical {
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struct link link;
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struct descriptor desc;
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int type; /* What sort of PHYS_* link are we ? */
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struct async async; /* Our async state */
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struct hdlc hdlc; /* Our hdlc state */
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int fd; /* File descriptor for this device */
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struct mbuf *out; /* mbuf that suffered a short write */
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int connect_count;
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struct datalink *dl; /* my owner */
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struct {
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u_char buf[MAX_MRU]; /* Our input data buffer */
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size_t sz;
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} input;
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struct {
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char full[40]; /* Our current device name */
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char *base;
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} name;
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unsigned Utmp : 1; /* Are we in utmp ? (move to ttydevice ?) */
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pid_t session_owner; /* HUP this when closing the link */
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struct device *handler; /* device specific handler */
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struct {
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unsigned rts_cts : 1; /* Is rts/cts enabled ? */
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unsigned parity; /* What parity is enabled? (tty flags) */
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unsigned speed; /* tty speed */
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char devlist[LINE_LEN]; /* NUL separated list of devices */
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int ndev; /* number of devices in list */
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struct {
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unsigned required : 1; /* Is cd *REQUIRED* on this device */
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int delay; /* Wait this many seconds after login script */
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} cd;
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} cfg;
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};
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#define field2phys(fp, name) \
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((struct physical *)((char *)fp - (int)(&((struct physical *)0)->name)))
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#define link2physical(l) \
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((l)->type == PHYSICAL_LINK ? field2phys(l, link) : NULL)
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#define descriptor2physical(d) \
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((d)->type == PHYSICAL_DESCRIPTOR ? field2phys(d, desc) : NULL)
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#define PHYSICAL_NOFORCE 1
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#define PHYSICAL_FORCE_ASYNC 2
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#define PHYSICAL_FORCE_SYNC 3
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extern struct physical *physical_Create(struct datalink *, int);
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extern int physical_Open(struct physical *, struct bundle *);
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extern int physical_Raw(struct physical *);
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extern int physical_GetSpeed(struct physical *);
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extern int physical_SetSpeed(struct physical *, int);
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extern int physical_SetParity(struct physical *, const char *);
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extern int physical_SetRtsCts(struct physical *, int);
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extern void physical_SetSync(struct physical *);
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extern int physical_ShowStatus(struct cmdargs const *);
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extern void physical_Offline(struct physical *);
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extern void physical_Close(struct physical *);
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extern void physical_Destroy(struct physical *);
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extern struct physical *iov2physical(struct datalink *, struct iovec *, int *,
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int, int);
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extern int physical2iov(struct physical *, struct iovec *, int *, int, pid_t);
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extern void physical_ChangedPid(struct physical *, pid_t);
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extern int physical_IsSync(struct physical *);
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extern const char *physical_GetDevice(struct physical *);
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extern void physical_SetDeviceList(struct physical *, int, const char *const *);
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extern void physical_SetDevice(struct physical *, const char *);
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extern ssize_t physical_Read(struct physical *, void *, size_t);
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extern ssize_t physical_Write(struct physical *, const void *, size_t);
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extern int physical_doUpdateSet(struct descriptor *, fd_set *, fd_set *,
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fd_set *, int *, int);
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extern int physical_IsSet(struct descriptor *, const fd_set *);
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extern void physical_Login(struct physical *, const char *);
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extern int physical_RemoveFromSet(struct physical *, fd_set *, fd_set *,
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fd_set *);
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extern int physical_SetMode(struct physical *, int);
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extern void physical_DeleteQueue(struct physical *);
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extern void physical_SetupStack(struct physical *, int);
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extern void physical_StopDeviceTimer(struct physical *);
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