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1  /* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */
2  /*
3   * IEEE 802.2 User Interface SAPs for Linux, data structures and indicators.
4   *
5   * Copyright (c) 2001 by Jay Schulist <jschlst@samba.org>
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  #ifndef _UAPI__LINUX_LLC_H
15  #define _UAPI__LINUX_LLC_H
16  
17  #include <linux/socket.h>
18  #include <linux/if.h> 		/* For IFHWADDRLEN. */
19  
20  #define __LLC_SOCK_SIZE__ 16	/* sizeof(sockaddr_llc), word align. */
21  struct sockaddr_llc {
22  	__kernel_sa_family_t sllc_family; /* AF_LLC */
23  	__kernel_sa_family_t sllc_arphrd; /* ARPHRD_ETHER */
24  	unsigned char   sllc_test;
25  	unsigned char   sllc_xid;
26  	unsigned char	sllc_ua;	/* UA data, only for SOCK_STREAM. */
27  	unsigned char   sllc_sap;
28  	unsigned char   sllc_mac[IFHWADDRLEN];
29  	unsigned char   __pad[__LLC_SOCK_SIZE__ -
30  			      sizeof(__kernel_sa_family_t) * 2 -
31  			      sizeof(unsigned char) * 4 - IFHWADDRLEN];
32  };
33  
34  /* sockopt definitions. */
35  enum llc_sockopts {
36  	LLC_OPT_UNKNOWN = 0,
37  	LLC_OPT_RETRY,		/* max retrans attempts. */
38  	LLC_OPT_SIZE,		/* max PDU size (octets). */
39  	LLC_OPT_ACK_TMR_EXP,	/* ack expire time (secs). */
40  	LLC_OPT_P_TMR_EXP,	/* pf cycle expire time (secs). */
41  	LLC_OPT_REJ_TMR_EXP,	/* rej sent expire time (secs). */
42  	LLC_OPT_BUSY_TMR_EXP,	/* busy state expire time (secs). */
43  	LLC_OPT_TX_WIN,		/* tx window size. */
44  	LLC_OPT_RX_WIN,		/* rx window size. */
45  	LLC_OPT_PKTINFO,	/* ancillary packet information. */
46  	LLC_OPT_MAX
47  };
48  
49  #define LLC_OPT_MAX_RETRY	 100
50  #define LLC_OPT_MAX_SIZE	4196
51  #define LLC_OPT_MAX_WIN		 127
52  #define LLC_OPT_MAX_ACK_TMR_EXP	  60
53  #define LLC_OPT_MAX_P_TMR_EXP	  60
54  #define LLC_OPT_MAX_REJ_TMR_EXP	  60
55  #define LLC_OPT_MAX_BUSY_TMR_EXP  60
56  
57  /* LLC SAP types. */
58  #define LLC_SAP_NULL	0x00		/* NULL SAP. 			*/
59  #define LLC_SAP_LLC	0x02		/* LLC Sublayer Management. 	*/
60  #define LLC_SAP_SNA	0x04		/* SNA Path Control. 		*/
61  #define LLC_SAP_PNM	0x0E		/* Proway Network Management.	*/
62  #define LLC_SAP_IP	0x06		/* TCP/IP. 			*/
63  #define LLC_SAP_BSPAN	0x42		/* Bridge Spanning Tree Proto	*/
64  #define LLC_SAP_MMS	0x4E		/* Manufacturing Message Srv.	*/
65  #define LLC_SAP_8208	0x7E		/* ISO 8208			*/
66  #define LLC_SAP_3COM	0x80		/* 3COM. 			*/
67  #define LLC_SAP_PRO	0x8E		/* Proway Active Station List	*/
68  #define LLC_SAP_SNAP	0xAA		/* SNAP. 			*/
69  #define LLC_SAP_BANYAN	0xBC		/* Banyan. 			*/
70  #define LLC_SAP_IPX	0xE0		/* IPX/SPX. 			*/
71  #define LLC_SAP_NETBEUI	0xF0		/* NetBEUI. 			*/
72  #define LLC_SAP_LANMGR	0xF4		/* LanManager. 			*/
73  #define LLC_SAP_IMPL	0xF8		/* IMPL				*/
74  #define LLC_SAP_DISC	0xFC		/* Discovery			*/
75  #define LLC_SAP_OSI	0xFE		/* OSI Network Layers. 		*/
76  #define LLC_SAP_LAR	0xDC		/* LAN Address Resolution 	*/
77  #define LLC_SAP_RM	0xD4		/* Resource Management 		*/
78  #define LLC_SAP_GLOBAL	0xFF		/* Global SAP. 			*/
79  
80  struct llc_pktinfo {
81  	int lpi_ifindex;
82  	unsigned char lpi_sap;
83  	unsigned char lpi_mac[IFHWADDRLEN];
84  };
85  
86  #endif /* _UAPI__LINUX_LLC_H */
87