include/net/llc_if.h

   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 */