diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/slip.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/net/slip.h')
-rw-r--r-- | drivers/net/slip.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/net/slip.h b/drivers/net/slip.h new file mode 100644 index 000000000000..ab3efe66a642 --- /dev/null +++ b/drivers/net/slip.h | |||
@@ -0,0 +1,121 @@ | |||
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 | ||
24 | |||
25 | #include <linux/config.h> | ||
26 | |||
27 | #if defined(CONFIG_INET) && defined(CONFIG_SLIP_COMPRESSED) | ||
28 | # define SL_INCLUDE_CSLIP | ||
29 | #endif | ||
30 | |||
31 | #ifdef SL_INCLUDE_CSLIP | ||
32 | # define SL_MODE_DEFAULT SL_MODE_ADAPTIVE | ||
33 | #else | ||
34 | # define SL_MODE_DEFAULT SL_MODE_SLIP | ||
35 | #endif | ||
36 | |||
37 | /* SLIP configuration. */ | ||
38 | #define SL_NRUNIT 256 /* MAX number of SLIP channels; | ||
39 | This can be overridden with | ||
40 | insmod -oslip_maxdev=nnn */ | ||
41 | #define SL_MTU 296 /* 296; I am used to 600- FvK */ | ||
42 | |||
43 | /* SLIP protocol characters. */ | ||
44 | #define END 0300 /* indicates end of frame */ | ||
45 | #define ESC 0333 /* indicates byte stuffing */ | ||
46 | #define ESC_END 0334 /* ESC ESC_END means END 'data' */ | ||
47 | #define ESC_ESC 0335 /* ESC ESC_ESC means ESC 'data' */ | ||
48 | |||
49 | |||
50 | struct slip { | ||
51 | int magic; | ||
52 | |||
53 | /* Various fields. */ | ||
54 | struct tty_struct *tty; /* ptr to TTY structure */ | ||
55 | struct net_device *dev; /* easy for intr handling */ | ||
56 | spinlock_t lock; | ||
57 | |||
58 | #ifdef SL_INCLUDE_CSLIP | ||
59 | struct slcompress *slcomp; /* for header compression */ | ||
60 | unsigned char *cbuff; /* compression buffer */ | ||
61 | #endif | ||
62 | |||
63 | /* These are pointers to the malloc()ed frame buffers. */ | ||
64 | unsigned char *rbuff; /* receiver buffer */ | ||
65 | int rcount; /* received chars counter */ | ||
66 | unsigned char *xbuff; /* transmitter buffer */ | ||
67 | unsigned char *xhead; /* pointer to next byte to XMIT */ | ||
68 | int xleft; /* bytes left in XMIT queue */ | ||
69 | |||
70 | /* SLIP interface statistics. */ | ||
71 | unsigned long rx_packets; /* inbound frames counter */ | ||
72 | unsigned long tx_packets; /* outbound frames counter */ | ||
73 | unsigned long rx_bytes; /* inbound byte counte */ | ||
74 | unsigned long tx_bytes; /* outbound byte counter */ | ||
75 | unsigned long rx_errors; /* Parity, etc. errors */ | ||
76 | unsigned long tx_errors; /* Planned stuff */ | ||
77 | unsigned long rx_dropped; /* No memory for skb */ | ||
78 | unsigned long tx_dropped; /* When MTU change */ | ||
79 | unsigned long rx_over_errors; /* Frame bigger then SLIP buf. */ | ||
80 | #ifdef SL_INCLUDE_CSLIP | ||
81 | unsigned long tx_compressed; | ||
82 | unsigned long rx_compressed; | ||
83 | unsigned long tx_misses; | ||
84 | #endif | ||
85 | /* Detailed SLIP statistics. */ | ||
86 | |||
87 | int mtu; /* Our mtu (to spot changes!) */ | ||
88 | int buffsize; /* Max buffers sizes */ | ||
89 | |||
90 | #ifdef CONFIG_SLIP_MODE_SLIP6 | ||
91 | int xdata, xbits; /* 6 bit slip controls */ | ||
92 | #endif | ||
93 | |||
94 | unsigned long flags; /* Flag values/ mode etc */ | ||
95 | #define SLF_INUSE 0 /* Channel in use */ | ||
96 | #define SLF_ESCAPE 1 /* ESC received */ | ||
97 | #define SLF_ERROR 2 /* Parity, etc. error */ | ||
98 | #define SLF_KEEPTEST 3 /* Keepalive test flag */ | ||
99 | #define SLF_OUTWAIT 4 /* is outpacket was flag */ | ||
100 | |||
101 | unsigned char mode; /* SLIP mode */ | ||
102 | unsigned char leased; | ||
103 | dev_t line; | ||
104 | pid_t pid; | ||
105 | #define SL_MODE_SLIP 0 | ||
106 | #define SL_MODE_CSLIP 1 | ||
107 | #define SL_MODE_SLIP6 2 /* Matt Dillon's printable slip */ | ||
108 | #define SL_MODE_CSLIP6 (SL_MODE_SLIP6|SL_MODE_CSLIP) | ||
109 | #define SL_MODE_AX25 4 | ||
110 | #define SL_MODE_ADAPTIVE 8 | ||
111 | #ifdef CONFIG_SLIP_SMART | ||
112 | unsigned char outfill; /* # of sec between outfill packet */ | ||
113 | unsigned char keepalive; /* keepalive seconds */ | ||
114 | struct timer_list outfill_timer; | ||
115 | struct timer_list keepalive_timer; | ||
116 | #endif | ||
117 | }; | ||
118 | |||
119 | #define SLIP_MAGIC 0x5302 | ||
120 | |||
121 | #endif /* _LINUX_SLIP.H */ | ||