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