root/net/bluetooth/bnep/bnep.h

INCLUDED FROM

DEFINITIONS

1. bnep_mc_hash

   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 
  73 struct bnep_setup_conn_req {
  74         __u8 type;
  75         __u8 ctrl;
  76         __u8 uuid_size;
  77         __u8 service[0];
  78 } __packed;
  79 
  80 struct bnep_set_filter_req {
  81         __u8 type;
  82         __u8 ctrl;
  83         __be16 len;
  84         __u8 list[0];
  85 } __packed;
  86 
  87 struct bnep_control_rsp {
  88         __u8 type;
  89         __u8 ctrl;
  90         __be16 resp;
  91 } __packed;
  92 
  93 struct 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 
 109 struct 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 
 116 struct bnep_conndel_req {
 117         __u32 flags;
 118         __u8  dst[ETH_ALEN];
 119 };
 120 
 121 struct bnep_conninfo {
 122         __u32 flags;
 123         __u16 role;
 124         __u16 state;
 125         __u8  dst[ETH_ALEN];
 126         char  device[16];
 127 };
 128 
 129 struct bnep_connlist_req {
 130         __u32  cnum;
 131         struct bnep_conninfo __user *ci;
 132 };
 133 
 134 struct bnep_proto_filter {
 135         __u16 start;
 136         __u16 end;
 137 };
 138 
 139 int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock);
 140 int bnep_del_connection(struct bnep_conndel_req *req);
 141 int bnep_get_connlist(struct bnep_connlist_req *req);
 142 int bnep_get_conninfo(struct bnep_conninfo *ci);
 143 
 144 /* BNEP sessions */
 145 struct 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 
 164 void bnep_net_setup(struct net_device *dev);
 165 int bnep_sock_init(void);
 166 void bnep_sock_cleanup(void);
 167 
 168 static inline int bnep_mc_hash(__u8 *addr)
 169 {
 170         return crc32_be(~0, addr, ETH_ALEN) >> 26;
 171 }
 172 
 173 #endif