1 #ifndef LLC_IF_H
2 #define LLC_IF_H
3 /*
4  * Copyright (c) 1997 by Procom Technology,Inc.
5  * 		 2001 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 /* Defines LLC interface to network layer */
15 /* Available primitives */
16 #include <linux/if.h>
17 #include <linux/if_arp.h>
18 #include <linux/llc.h>
19 #include <linux/etherdevice.h>
20 #include <net/llc.h>
21 
22 #define LLC_DATAUNIT_PRIM	1
23 #define LLC_CONN_PRIM		2
24 #define LLC_DATA_PRIM		3
25 #define LLC_DISC_PRIM		4
26 #define LLC_RESET_PRIM		5
27 #define LLC_FLOWCONTROL_PRIM	6 /* Not supported at this time */
28 #define LLC_DISABLE_PRIM	7
29 #define LLC_XID_PRIM		8
30 #define LLC_TEST_PRIM		9
31 #define LLC_SAP_ACTIVATION     10
32 #define LLC_SAP_DEACTIVATION   11
33 
34 #define LLC_NBR_PRIMITIVES     11
35 
36 #define LLC_IND			1
37 #define LLC_CONFIRM		2
38 
39 /* Primitive type */
40 #define LLC_PRIM_TYPE_REQ	1
41 #define LLC_PRIM_TYPE_IND	2
42 #define LLC_PRIM_TYPE_RESP	3
43 #define LLC_PRIM_TYPE_CONFIRM	4
44 
45 /* Reset reasons, remote entity or local LLC */
46 #define LLC_RESET_REASON_REMOTE	1
47 #define LLC_RESET_REASON_LOCAL	2
48 
49 /* Disconnect reasons */
50 #define LLC_DISC_REASON_RX_DM_RSP_PDU	0
51 #define LLC_DISC_REASON_RX_DISC_CMD_PDU	1
52 #define LLC_DISC_REASON_ACK_TMR_EXP	2
53 
54 /* Confirm reasons */
55 #define LLC_STATUS_CONN		0 /* connect confirm & reset confirm */
56 #define LLC_STATUS_DISC		1 /* connect confirm & reset confirm */
57 #define LLC_STATUS_FAILED	2 /* connect confirm & reset confirm */
58 #define LLC_STATUS_IMPOSSIBLE	3 /* connect confirm */
59 #define LLC_STATUS_RECEIVED	4 /* data conn */
60 #define LLC_STATUS_REMOTE_BUSY	5 /* data conn */
61 #define LLC_STATUS_REFUSE	6 /* data conn */
62 #define LLC_STATUS_CONFLICT	7 /* disconnect conn */
63 #define LLC_STATUS_RESET_DONE	8 /*  */
64 
65 /**
66  *      llc_mac_null - determines if a address is a null mac address
67  *      @mac: Mac address to test if null.
68  *
69  *      Determines if a given address is a null mac address.  Returns 0 if the
70  *      address is not a null mac, 1 if the address is a null mac.
71  */
llc_mac_null(const u8 * mac)72 static inline int llc_mac_null(const u8 *mac)
73 {
74 	return is_zero_ether_addr(mac);
75 }
76 
llc_mac_multicast(const u8 * mac)77 static inline int llc_mac_multicast(const u8 *mac)
78 {
79 	return is_multicast_ether_addr(mac);
80 }
81 /**
82  *	llc_mac_match - determines if two mac addresses are the same
83  *	@mac1: First mac address to compare.
84  *	@mac2: Second mac address to compare.
85  *
86  *	Determines if two given mac address are the same.  Returns 0 if there
87  *	is not a complete match up to len, 1 if a complete match up to len is
88  *	found.
89  */
llc_mac_match(const u8 * mac1,const u8 * mac2)90 static inline int llc_mac_match(const u8 *mac1, const u8 *mac2)
91 {
92 	return !compare_ether_addr(mac1, mac2);
93 }
94 
95 extern int llc_establish_connection(struct sock *sk, u8 *lmac,
96 				    u8 *dmac, u8 dsap);
97 extern int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb);
98 extern int llc_send_disc(struct sock *sk);
99 #endif /* LLC_IF_H */
100