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 */ 72 static inline int llc_mac_null(const u8 *mac) 73 { 74 return is_zero_ether_addr(mac); 75 } 76 77 static inline int llc_addrany(const struct llc_addr *addr) 78 { 79 return llc_mac_null(addr->mac) && !addr->lsap; 80 } 81 82 static inline int llc_mac_multicast(const u8 *mac) 83 { 84 return is_multicast_ether_addr(mac); 85 } 86 /** 87 * llc_mac_match - determines if two mac addresses are the same 88 * @mac1: First mac address to compare. 89 * @mac2: Second mac address to compare. 90 * 91 * Determines if two given mac address are the same. Returns 0 if there 92 * is not a complete match up to len, 1 if a complete match up to len is 93 * found. 94 */ 95 static inline int llc_mac_match(const u8 *mac1, const u8 *mac2) 96 { 97 return !compare_ether_addr(mac1, mac2); 98 } 99 100 extern int llc_establish_connection(struct sock *sk, u8 *lmac, 101 u8 *dmac, u8 dsap); 102 extern int llc_build_and_send_pkt(struct sock *sk, struct sk_buff *skb); 103 extern int llc_send_disc(struct sock *sk); 104 #endif /* LLC_IF_H */ 105