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 */
72static inline int llc_mac_null(const u8 *mac)
73{
74	return is_zero_ether_addr(mac);
75}
76
77static inline int llc_addrany(const struct llc_addr *addr)
78{
79	return llc_mac_null(addr->mac) && !addr->lsap;
80}
81
82static inline int llc_mac_multicast(const u8 *mac)
83{
84	return is_multicast_ether_addr(mac);
85}
86/**
87 *	llc_mac_match - determines if two mac addresses are the same
88 *	@mac1: First mac address to compare.
89 *	@mac2: Second mac address to compare.
90 *
91 *	Determines if two given mac address are the same.  Returns 0 if there
92 *	is not a complete match up to len, 1 if a complete match up to len is
93 *	found.
94 */
95static inline int llc_mac_match(const u8 *mac1, const u8 *mac2)
96{
97	return !compare_ether_addr(mac1, mac2);
98}
99
100extern int llc_establish_connection(struct sock *sk, u8 *lmac,
101				    u8 *dmac, u8 dsap);
102extern int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb);
103extern int llc_send_disc(struct sock *sk);
104#endif /* LLC_IF_H */
105