LXR linux/net/bluetooth/bnep/bnep.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3  BNEP protocol definition for Linux Bluetooth stack (BlueZ).
   4  Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
   5
   6*/
   7
   8#ifndef _BNEP_H
   9#define _BNEP_H
  10
  11#include <linux/types.h>
  12#include <linux/crc32.h>
  13#include <net/bluetooth/bluetooth.h>
  14
  15/* Limits */
  16#define BNEP_MAX_PROTO_FILTERS          5
  17#define BNEP_MAX_MULTICAST_FILTERS      20
  18
  19/* UUIDs */
  20#define BNEP_BASE_UUID  0x0000000000001000800000805F9B34FB
  21#define BNEP_UUID16     0x02
  22#define BNEP_UUID32     0x04
  23#define BNEP_UUID128    0x16
  24
  25#define BNEP_SVC_PANU   0x1115
  26#define BNEP_SVC_NAP    0x1116
  27#define BNEP_SVC_GN     0x1117
  28
  29/* Packet types */
  30#define BNEP_GENERAL                    0x00
  31#define BNEP_CONTROL                    0x01
  32#define BNEP_COMPRESSED                 0x02
  33#define BNEP_COMPRESSED_SRC_ONLY        0x03
  34#define BNEP_COMPRESSED_DST_ONLY        0x04
  35
  36/* Control types */
  37#define BNEP_CMD_NOT_UNDERSTOOD         0x00
  38#define BNEP_SETUP_CONN_REQ             0x01
  39#define BNEP_SETUP_CONN_RSP             0x02
  40#define BNEP_FILTER_NET_TYPE_SET        0x03
  41#define BNEP_FILTER_NET_TYPE_RSP        0x04
  42#define BNEP_FILTER_MULTI_ADDR_SET      0x05
  43#define BNEP_FILTER_MULTI_ADDR_RSP      0x06
  44
  45/* Extension types */
  46#define BNEP_EXT_CONTROL 0x00
  47
  48/* Response messages */
  49#define BNEP_SUCCESS 0x00
  50
  51#define BNEP_CONN_INVALID_DST 0x01
  52#define BNEP_CONN_INVALID_SRC 0x02
  53#define BNEP_CONN_INVALID_SVC 0x03
  54#define BNEP_CONN_NOT_ALLOWED 0x04
  55
  56#define BNEP_FILTER_UNSUPPORTED_REQ     0x01
  57#define BNEP_FILTER_INVALID_RANGE       0x02
  58#define BNEP_FILTER_INVALID_MCADDR      0x02
  59#define BNEP_FILTER_LIMIT_REACHED       0x03
  60#define BNEP_FILTER_DENIED_SECURITY     0x04
  61
  62/* L2CAP settings */
  63#define BNEP_MTU        1691
  64#define BNEP_PSM        0x0f
  65#define BNEP_FLUSH_TO   0xffff
  66#define BNEP_CONNECT_TO 15
  67#define BNEP_FILTER_TO  15
  68
  69/* Headers */
  70#define BNEP_TYPE_MASK  0x7f
  71#define BNEP_EXT_HEADER 0x80
  72
  73struct bnep_setup_conn_req {
  74        __u8 type;
  75        __u8 ctrl;
  76        __u8 uuid_size;
  77        __u8 service[0];
  78} __packed;
  79
  80struct bnep_set_filter_req {
  81        __u8 type;
  82        __u8 ctrl;
  83        __be16 len;
  84        __u8 list[0];
  85} __packed;
  86
  87struct bnep_control_rsp {
  88        __u8 type;
  89        __u8 ctrl;
  90        __be16 resp;
  91} __packed;
  92
  93struct bnep_ext_hdr {
  94        __u8 type;
  95        __u8 len;
  96        __u8 data[0];
  97} __packed;
  98
  99/* BNEP ioctl defines */
 100#define BNEPCONNADD     _IOW('B', 200, int)
 101#define BNEPCONNDEL     _IOW('B', 201, int)
 102#define BNEPGETCONNLIST _IOR('B', 210, int)
 103#define BNEPGETCONNINFO _IOR('B', 211, int)
 104#define BNEPGETSUPPFEAT _IOR('B', 212, int)
 105
 106#define BNEP_SETUP_RESPONSE     0
 107#define BNEP_SETUP_RSP_SENT     10
 108
 109struct bnep_connadd_req {
 110        int   sock;             /* Connected socket */
 111        __u32 flags;
 112        __u16 role;
 113        char  device[16];       /* Name of the Ethernet device */
 114};
 115
 116struct bnep_conndel_req {
 117        __u32 flags;
 118        __u8  dst[ETH_ALEN];
 119};
 120
 121struct bnep_conninfo {
 122        __u32 flags;
 123        __u16 role;
 124        __u16 state;
 125        __u8  dst[ETH_ALEN];
 126        char  device[16];
 127};
 128
 129struct bnep_connlist_req {
 130        __u32  cnum;
 131        struct bnep_conninfo __user *ci;
 132};
 133
 134struct bnep_proto_filter {
 135        __u16 start;
 136        __u16 end;
 137};
 138
 139int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock);
 140int bnep_del_connection(struct bnep_conndel_req *req);
 141int bnep_get_connlist(struct bnep_connlist_req *req);
 142int bnep_get_conninfo(struct bnep_conninfo *ci);
 143
 144/* BNEP sessions */
 145struct bnep_session {
 146        struct list_head list;
 147
 148        unsigned int  role;
 149        unsigned long state;
 150        unsigned long flags;
 151        atomic_t      terminate;
 152        struct task_struct *task;
 153
 154        struct ethhdr eh;
 155        struct msghdr msg;
 156
 157        struct bnep_proto_filter proto_filter[BNEP_MAX_PROTO_FILTERS];
 158        unsigned long long mc_filter;
 159
 160        struct socket    *sock;
 161        struct net_device *dev;
 162};
 163
 164void bnep_net_setup(struct net_device *dev);
 165int bnep_sock_init(void);
 166void bnep_sock_cleanup(void);
 167
 168static inline int bnep_mc_hash(__u8 *addr)
 169{
 170        return crc32_be(~0, addr, ETH_ALEN) >> 26;
 171}
 172
 173#endif
 174