Root/
1 | /* $Id: concap.h,v 1.3.2.2 2004/01/12 23:08:35 keil Exp $ |
2 | * |
3 | * Copyright 1997 by Henner Eisen <eis@baty.hanse.de> |
4 | * |
5 | * This software may be used and distributed according to the terms |
6 | * of the GNU General Public License, incorporated herein by reference. |
7 | */ |
8 | |
9 | #ifndef _LINUX_CONCAP_H |
10 | #define _LINUX_CONCAP_H |
11 | |
12 | #include <linux/skbuff.h> |
13 | #include <linux/netdevice.h> |
14 | |
15 | /* Stuff to support encapsulation protocols genericly. The encapsulation |
16 | protocol is processed at the uppermost layer of the network interface. |
17 | |
18 | Based on a ideas developed in a 'synchronous device' thread in the |
19 | linux-x25 mailing list contributed by Alan Cox, Thomasz Motylewski |
20 | and Jonathan Naylor. |
21 | |
22 | For more documetation on this refer to Documentation/isdn/README.concap |
23 | */ |
24 | |
25 | struct concap_proto_ops; |
26 | struct concap_device_ops; |
27 | |
28 | /* this manages all data needed by the encapsulation protocol |
29 | */ |
30 | struct concap_proto{ |
31 | struct net_device *net_dev; /* net device using our service */ |
32 | struct concap_device_ops *dops; /* callbacks provided by device */ |
33 | struct concap_proto_ops *pops; /* callbacks provided by us */ |
34 | spinlock_t lock; |
35 | int flags; |
36 | void *proto_data; /* protocol specific private data, to |
37 | be accessed via *pops methods only*/ |
38 | /* |
39 | : |
40 | whatever |
41 | : |
42 | */ |
43 | }; |
44 | |
45 | /* Operations to be supported by the net device. Called by the encapsulation |
46 | * protocol entity. No receive method is offered because the encapsulation |
47 | * protocol directly calls netif_rx(). |
48 | */ |
49 | struct concap_device_ops{ |
50 | |
51 | /* to request data is submitted by device*/ |
52 | int (*data_req)(struct concap_proto *, struct sk_buff *); |
53 | |
54 | /* Control methods must be set to NULL by devices which do not |
55 | support connection control.*/ |
56 | /* to request a connection is set up */ |
57 | int (*connect_req)(struct concap_proto *); |
58 | |
59 | /* to request a connection is released */ |
60 | int (*disconn_req)(struct concap_proto *); |
61 | }; |
62 | |
63 | /* Operations to be supported by the encapsulation protocol. Called by |
64 | * device driver. |
65 | */ |
66 | struct concap_proto_ops{ |
67 | |
68 | /* create a new encapsulation protocol instance of same type */ |
69 | struct concap_proto * (*proto_new) (void); |
70 | |
71 | /* delete encapsulation protocol instance and free all its resources. |
72 | cprot may no loger be referenced after calling this */ |
73 | void (*proto_del)(struct concap_proto *cprot); |
74 | |
75 | /* initialize the protocol's data. To be called at interface startup |
76 | or when the device driver resets the interface. All services of the |
77 | encapsulation protocol may be used after this*/ |
78 | int (*restart)(struct concap_proto *cprot, |
79 | struct net_device *ndev, |
80 | struct concap_device_ops *dops); |
81 | |
82 | /* inactivate an encapsulation protocol instance. The encapsulation |
83 | protocol may not call any *dops methods after this. */ |
84 | int (*close)(struct concap_proto *cprot); |
85 | |
86 | /* process a frame handed down to us by upper layer */ |
87 | int (*encap_and_xmit)(struct concap_proto *cprot, struct sk_buff *skb); |
88 | |
89 | /* to be called for each data entity received from lower layer*/ |
90 | int (*data_ind)(struct concap_proto *cprot, struct sk_buff *skb); |
91 | |
92 | /* to be called when a connection was set up/down. |
93 | Protocols that don't process these primitives might fill in |
94 | dummy methods here */ |
95 | int (*connect_ind)(struct concap_proto *cprot); |
96 | int (*disconn_ind)(struct concap_proto *cprot); |
97 | /* |
98 | Some network device support functions, like net_header(), rebuild_header(), |
99 | and others, that depend solely on the encapsulation protocol, might |
100 | be provided here, too. The net device would just fill them in its |
101 | corresponding fields when it is opened. |
102 | */ |
103 | }; |
104 | |
105 | /* dummy restart/close/connect/reset/disconn methods |
106 | */ |
107 | extern int concap_nop(struct concap_proto *cprot); |
108 | |
109 | /* dummy submit method |
110 | */ |
111 | extern int concap_drop_skb(struct concap_proto *cprot, struct sk_buff *skb); |
112 | #endif |
113 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9