ia64/linux-2.6.18-xen.hg

view drivers/net/slip.h @ 912:dd42cdb0ab89

[IA64] Build blktap2 driver by default in x86 builds.

add CONFIG_XEN_BLKDEV_TAP2=y to buildconfigs/linux-defconfig_xen_ia64.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 12:09:16 2009 +0900 (2009-06-29)
parents 831230e53067
children
line source
1 /*
2 * slip.h Define the SLIP device driver interface and constants.
3 *
4 * NOTE: THIS FILE WILL BE MOVED TO THE LINUX INCLUDE DIRECTORY
5 * AS SOON AS POSSIBLE!
6 *
7 * Version: @(#)slip.h 1.2.0 03/28/93
8 *
9 * Fixes:
10 * Alan Cox : Added slip mtu field.
11 * Matt Dillon : Printable slip (borrowed from net2e)
12 * Alan Cox : Added SL_SLIP_LOTS
13 * Dmitry Gorodchanin : A lot of changes in the 'struct slip'
14 * Dmitry Gorodchanin : Added CSLIP statistics.
15 * Stanislav Voronyi : Make line checking as created by
16 * Igor Chechik, RELCOM Corp.
17 * Craig Schlenter : Fixed #define bug that caused
18 * CSLIP telnets to hang in 1.3.61-6
19 *
20 * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
21 */
22 #ifndef _LINUX_SLIP_H
23 #define _LINUX_SLIP_H
26 #if defined(CONFIG_INET) && defined(CONFIG_SLIP_COMPRESSED)
27 # define SL_INCLUDE_CSLIP
28 #endif
30 #ifdef SL_INCLUDE_CSLIP
31 # define SL_MODE_DEFAULT SL_MODE_ADAPTIVE
32 #else
33 # define SL_MODE_DEFAULT SL_MODE_SLIP
34 #endif
36 /* SLIP configuration. */
37 #define SL_NRUNIT 256 /* MAX number of SLIP channels;
38 This can be overridden with
39 insmod -oslip_maxdev=nnn */
40 #define SL_MTU 296 /* 296; I am used to 600- FvK */
42 /* SLIP protocol characters. */
43 #define END 0300 /* indicates end of frame */
44 #define ESC 0333 /* indicates byte stuffing */
45 #define ESC_END 0334 /* ESC ESC_END means END 'data' */
46 #define ESC_ESC 0335 /* ESC ESC_ESC means ESC 'data' */
49 struct slip {
50 int magic;
52 /* Various fields. */
53 struct tty_struct *tty; /* ptr to TTY structure */
54 struct net_device *dev; /* easy for intr handling */
55 spinlock_t lock;
57 #ifdef SL_INCLUDE_CSLIP
58 struct slcompress *slcomp; /* for header compression */
59 unsigned char *cbuff; /* compression buffer */
60 #endif
62 /* These are pointers to the malloc()ed frame buffers. */
63 unsigned char *rbuff; /* receiver buffer */
64 int rcount; /* received chars counter */
65 unsigned char *xbuff; /* transmitter buffer */
66 unsigned char *xhead; /* pointer to next byte to XMIT */
67 int xleft; /* bytes left in XMIT queue */
69 /* SLIP interface statistics. */
70 unsigned long rx_packets; /* inbound frames counter */
71 unsigned long tx_packets; /* outbound frames counter */
72 unsigned long rx_bytes; /* inbound byte counte */
73 unsigned long tx_bytes; /* outbound byte counter */
74 unsigned long rx_errors; /* Parity, etc. errors */
75 unsigned long tx_errors; /* Planned stuff */
76 unsigned long rx_dropped; /* No memory for skb */
77 unsigned long tx_dropped; /* When MTU change */
78 unsigned long rx_over_errors; /* Frame bigger then SLIP buf. */
79 #ifdef SL_INCLUDE_CSLIP
80 unsigned long tx_compressed;
81 unsigned long rx_compressed;
82 unsigned long tx_misses;
83 #endif
84 /* Detailed SLIP statistics. */
86 int mtu; /* Our mtu (to spot changes!) */
87 int buffsize; /* Max buffers sizes */
89 #ifdef CONFIG_SLIP_MODE_SLIP6
90 int xdata, xbits; /* 6 bit slip controls */
91 #endif
93 unsigned long flags; /* Flag values/ mode etc */
94 #define SLF_INUSE 0 /* Channel in use */
95 #define SLF_ESCAPE 1 /* ESC received */
96 #define SLF_ERROR 2 /* Parity, etc. error */
97 #define SLF_KEEPTEST 3 /* Keepalive test flag */
98 #define SLF_OUTWAIT 4 /* is outpacket was flag */
100 unsigned char mode; /* SLIP mode */
101 unsigned char leased;
102 dev_t line;
103 pid_t pid;
104 #define SL_MODE_SLIP 0
105 #define SL_MODE_CSLIP 1
106 #define SL_MODE_SLIP6 2 /* Matt Dillon's printable slip */
107 #define SL_MODE_CSLIP6 (SL_MODE_SLIP6|SL_MODE_CSLIP)
108 #define SL_MODE_AX25 4
109 #define SL_MODE_ADAPTIVE 8
110 #ifdef CONFIG_SLIP_SMART
111 unsigned char outfill; /* # of sec between outfill packet */
112 unsigned char keepalive; /* keepalive seconds */
113 struct timer_list outfill_timer;
114 struct timer_list keepalive_timer;
115 #endif
116 };
118 #define SLIP_MAGIC 0x5302
120 #endif /* _LINUX_SLIP.H */