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