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
64 extern 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 */
73 static __inline__ int llc_mac_null(u8 *mac)
74 {
75 return !memcmp(mac, llc_mac_null_var, IFHWADDRLEN);
76 }
77
78 static __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 */
92 static __inline__ int llc_mac_match(u8 *mac1, u8 *mac2)
93 {
94 return !memcmp(mac1, mac2, IFHWADDRLEN);
95 }
96
97 extern int llc_establish_connection(struct sock *sk, u8 *lmac,
98 u8 *dmac, u8 dsap);
99 extern int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb);
100 extern int llc_send_disc(struct sock *sk);
101 #endif /* LLC_IF_H */
102
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