Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef LLC_H |
2 | #define LLC_H | |
3 | /* | |
4 | * Copyright (c) 1997 by Procom Technology, Inc. | |
5 | * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> | |
6 | * | |
7 | * This program can be redistributed or modified under the terms of the | |
8 | * GNU General Public License as published by the Free Software Foundation. | |
9 | * This program is distributed without any warranty or implied warranty | |
10 | * of merchantability or fitness for a particular purpose. | |
11 | * | |
12 | * See the GNU General Public License for more details. | |
13 | */ | |
14 | ||
15 | #include <linux/if.h> | |
16 | #include <linux/if_ether.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/spinlock.h> | |
19 | ||
20 | struct net_device; | |
21 | struct packet_type; | |
22 | struct sk_buff; | |
23 | ||
24 | struct llc_addr { | |
25 | unsigned char lsap; | |
26 | unsigned char mac[IFHWADDRLEN]; | |
27 | }; | |
28 | ||
29 | #define LLC_SAP_STATE_INACTIVE 1 | |
30 | #define LLC_SAP_STATE_ACTIVE 2 | |
31 | ||
32 | /** | |
33 | * struct llc_sap - Defines the SAP component | |
34 | * | |
35 | * @station - station this sap belongs to | |
36 | * @state - sap state | |
37 | * @p_bit - only lowest-order bit used | |
38 | * @f_bit - only lowest-order bit used | |
39 | * @laddr - SAP value in this 'lsap' | |
40 | * @node - entry in station sap_list | |
41 | * @sk_list - LLC sockets this one manages | |
42 | */ | |
43 | struct llc_sap { | |
44 | unsigned char state; | |
45 | unsigned char p_bit; | |
46 | unsigned char f_bit; | |
47 | int (*rcv_func)(struct sk_buff *skb, | |
48 | struct net_device *dev, | |
f2ccd8fa DM |
49 | struct packet_type *pt, |
50 | struct net_device *orig_dev); | |
1da177e4 LT |
51 | struct llc_addr laddr; |
52 | struct list_head node; | |
53 | struct { | |
54 | rwlock_t lock; | |
55 | struct hlist_head list; | |
56 | } sk_list; | |
57 | }; | |
58 | ||
59 | #define LLC_DEST_INVALID 0 /* Invalid LLC PDU type */ | |
60 | #define LLC_DEST_SAP 1 /* Type 1 goes here */ | |
61 | #define LLC_DEST_CONN 2 /* Type 2 goes here */ | |
62 | ||
63 | extern struct list_head llc_sap_list; | |
64 | extern rwlock_t llc_sap_list_lock; | |
65 | extern unsigned char llc_station_mac_sa[ETH_ALEN]; | |
66 | ||
67 | extern int llc_rcv(struct sk_buff *skb, struct net_device *dev, | |
f2ccd8fa | 68 | struct packet_type *pt, struct net_device *orig_dev); |
1da177e4 LT |
69 | |
70 | extern int llc_mac_hdr_init(struct sk_buff *skb, | |
71 | unsigned char *sa, unsigned char *da); | |
72 | ||
73 | extern void llc_add_pack(int type, void (*handler)(struct llc_sap *sap, | |
74 | struct sk_buff *skb)); | |
75 | extern void llc_remove_pack(int type); | |
76 | ||
77 | extern void llc_set_station_handler(void (*handler)(struct sk_buff *skb)); | |
78 | ||
79 | extern struct llc_sap *llc_sap_open(unsigned char lsap, | |
80 | int (*rcv)(struct sk_buff *skb, | |
81 | struct net_device *dev, | |
f2ccd8fa DM |
82 | struct packet_type *pt, |
83 | struct net_device *orig_dev)); | |
1da177e4 LT |
84 | extern void llc_sap_close(struct llc_sap *sap); |
85 | ||
86 | extern struct llc_sap *llc_sap_find(unsigned char sap_value); | |
87 | ||
88 | extern int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb, | |
89 | unsigned char *dmac, unsigned char dsap); | |
90 | ||
91 | extern int llc_station_init(void); | |
92 | extern void llc_station_exit(void); | |
93 | ||
94 | #ifdef CONFIG_PROC_FS | |
95 | extern int llc_proc_init(void); | |
96 | extern void llc_proc_exit(void); | |
97 | #else | |
98 | #define llc_proc_init() (0) | |
99 | #define llc_proc_exit() do { } while(0) | |
100 | #endif /* CONFIG_PROC_FS */ | |
101 | #endif /* LLC_H */ |