bluetooth/bnep/bnep.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003   BNEP protocol definition for Linux Bluetooth stack (BlueZ).
0004   Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
0005
0006 */
0007
0008 #ifndef _BNEP_H
0009 #define _BNEP_H
0010
0011 #include <linux/types.h>
0012 #include <linux/crc32.h>
0013 #include <net/bluetooth/bluetooth.h>
0014
0015 /* Limits */
0016 #define BNEP_MAX_PROTO_FILTERS      5
0017 #define BNEP_MAX_MULTICAST_FILTERS  20
0018
0019 /* UUIDs */
0020 #define BNEP_BASE_UUID  0x0000000000001000800000805F9B34FB
0021 #define BNEP_UUID16 0x02
0022 #define BNEP_UUID32 0x04
0023 #define BNEP_UUID128    0x16
0024
0025 #define BNEP_SVC_PANU   0x1115
0026 #define BNEP_SVC_NAP    0x1116
0027 #define BNEP_SVC_GN 0x1117
0028
0029 /* Packet types */
0030 #define BNEP_GENERAL            0x00
0031 #define BNEP_CONTROL            0x01
0032 #define BNEP_COMPRESSED         0x02
0033 #define BNEP_COMPRESSED_SRC_ONLY    0x03
0034 #define BNEP_COMPRESSED_DST_ONLY    0x04
0035
0036 /* Control types */
0037 #define BNEP_CMD_NOT_UNDERSTOOD     0x00
0038 #define BNEP_SETUP_CONN_REQ     0x01
0039 #define BNEP_SETUP_CONN_RSP     0x02
0040 #define BNEP_FILTER_NET_TYPE_SET    0x03
0041 #define BNEP_FILTER_NET_TYPE_RSP    0x04
0042 #define BNEP_FILTER_MULTI_ADDR_SET  0x05
0043 #define BNEP_FILTER_MULTI_ADDR_RSP  0x06
0044
0045 /* Extension types */
0046 #define BNEP_EXT_CONTROL 0x00
0047
0048 /* Response messages */
0049 #define BNEP_SUCCESS 0x00
0050
0051 #define BNEP_CONN_INVALID_DST 0x01
0052 #define BNEP_CONN_INVALID_SRC 0x02
0053 #define BNEP_CONN_INVALID_SVC 0x03
0054 #define BNEP_CONN_NOT_ALLOWED 0x04
0055
0056 #define BNEP_FILTER_UNSUPPORTED_REQ 0x01
0057 #define BNEP_FILTER_INVALID_RANGE   0x02
0058 #define BNEP_FILTER_INVALID_MCADDR  0x02
0059 #define BNEP_FILTER_LIMIT_REACHED   0x03
0060 #define BNEP_FILTER_DENIED_SECURITY 0x04
0061
0062 /* L2CAP settings */
0063 #define BNEP_MTU    1691
0064 #define BNEP_PSM    0x0f
0065 #define BNEP_FLUSH_TO   0xffff
0066 #define BNEP_CONNECT_TO 15
0067 #define BNEP_FILTER_TO  15
0068
0069 /* Headers */
0070 #define BNEP_TYPE_MASK  0x7f
0071 #define BNEP_EXT_HEADER 0x80
0072
0073 struct bnep_setup_conn_req {
0074     __u8 type;
0075     __u8 ctrl;
0076     __u8 uuid_size;
0077     __u8 service[];
0078 } __packed;
0079
0080 struct bnep_set_filter_req {
0081     __u8 type;
0082     __u8 ctrl;
0083     __be16 len;
0084     __u8 list[];
0085 } __packed;
0086
0087 struct bnep_control_rsp {
0088     __u8 type;
0089     __u8 ctrl;
0090     __be16 resp;
0091 } __packed;
0092
0093 struct bnep_ext_hdr {
0094     __u8 type;
0095     __u8 len;
0096     __u8 data[];
0097 } __packed;
0098
0099 /* BNEP ioctl defines */
0100 #define BNEPCONNADD _IOW('B', 200, int)
0101 #define BNEPCONNDEL _IOW('B', 201, int)
0102 #define BNEPGETCONNLIST _IOR('B', 210, int)
0103 #define BNEPGETCONNINFO _IOR('B', 211, int)
0104 #define BNEPGETSUPPFEAT _IOR('B', 212, int)
0105
0106 #define BNEP_SETUP_RESPONSE 0
0107 #define BNEP_SETUP_RSP_SENT 10
0108
0109 struct bnep_connadd_req {
0110     int   sock;     /* Connected socket */
0111     __u32 flags;
0112     __u16 role;
0113     char  device[16];   /* Name of the Ethernet device */
0114 };
0115
0116 struct bnep_conndel_req {
0117     __u32 flags;
0118     __u8  dst[ETH_ALEN];
0119 };
0120
0121 struct bnep_conninfo {
0122     __u32 flags;
0123     __u16 role;
0124     __u16 state;
0125     __u8  dst[ETH_ALEN];
0126     char  device[16];
0127 };
0128
0129 struct bnep_connlist_req {
0130     __u32  cnum;
0131     struct bnep_conninfo __user *ci;
0132 };
0133
0134 struct bnep_proto_filter {
0135     __u16 start;
0136     __u16 end;
0137 };
0138
0139 int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock);
0140 int bnep_del_connection(struct bnep_conndel_req *req);
0141 int bnep_get_connlist(struct bnep_connlist_req *req);
0142 int bnep_get_conninfo(struct bnep_conninfo *ci);
0143
0144 /* BNEP sessions */
0145 struct bnep_session {
0146     struct list_head list;
0147
0148     unsigned int  role;
0149     unsigned long state;
0150     unsigned long flags;
0151     atomic_t      terminate;
0152     struct task_struct *task;
0153
0154     struct ethhdr eh;
0155     struct msghdr msg;
0156
0157     struct bnep_proto_filter proto_filter[BNEP_MAX_PROTO_FILTERS];
0158     unsigned long long mc_filter;
0159
0160     struct socket    *sock;
0161     struct net_device *dev;
0162 };
0163
0164 void bnep_net_setup(struct net_device *dev);
0165 int bnep_sock_init(void);
0166 void bnep_sock_cleanup(void);
0167
0168 static inline int bnep_mc_hash(__u8 *addr)
0169 {
0170     return crc32_be(~0, addr, ETH_ALEN) >> 26;
0171 }
0172
0173 #endif