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