| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |