1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (C) 2000-2001 Qualcomm Incorporated 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 #ifndef __BLUETOOTH_H 26 #define __BLUETOOTH_H 27 28 #include <asm/types.h> 29 #include <asm/byteorder.h> 30 #include <linux/list.h> 31 #include <linux/poll.h> 32 #include <net/sock.h> 33 34 #ifndef AF_BLUETOOTH 35 #define AF_BLUETOOTH 31 36 #define PF_BLUETOOTH AF_BLUETOOTH 37 #endif 38 39 /* Reserv for core and drivers use */ 40 #define BT_SKB_RESERVE 8 41 42 #define BTPROTO_L2CAP 0 43 #define BTPROTO_HCI 1 44 #define BTPROTO_SCO 2 45 #define BTPROTO_RFCOMM 3 46 #define BTPROTO_BNEP 4 47 #define BTPROTO_CMTP 5 48 #define BTPROTO_HIDP 6 49 #define BTPROTO_AVDTP 7 50 51 #define SOL_HCI 0 52 #define SOL_L2CAP 6 53 #define SOL_SCO 17 54 #define SOL_RFCOMM 18 55 56 #define BT_DEFER_SETUP 7 57 58 #define BT_INFO(fmt, arg...) printk(KERN_INFO "Bluetooth: " fmt "\n" , ## arg) 59 #define BT_ERR(fmt, arg...) printk(KERN_ERR "%s: " fmt "\n" , __func__ , ## arg) 60 #define BT_DBG(fmt, arg...) pr_debug("%s: " fmt "\n" , __func__ , ## arg) 61 62 /* Connection and socket states */ 63 enum { 64 BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */ 65 BT_OPEN, 66 BT_BOUND, 67 BT_LISTEN, 68 BT_CONNECT, 69 BT_CONNECT2, 70 BT_CONFIG, 71 BT_DISCONN, 72 BT_CLOSED 73 }; 74 75 /* Endianness conversions */ 76 #define htobs(a) __cpu_to_le16(a) 77 #define htobl(a) __cpu_to_le32(a) 78 #define btohs(a) __le16_to_cpu(a) 79 #define btohl(a) __le32_to_cpu(a) 80 81 /* BD Address */ 82 typedef struct { 83 __u8 b[6]; 84 } __attribute__((packed)) bdaddr_t; 85 86 #define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}}) 87 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff}}) 88 89 /* Copy, swap, convert BD Address */ 90 static inline int bacmp(bdaddr_t *ba1, bdaddr_t *ba2) 91 { 92 return memcmp(ba1, ba2, sizeof(bdaddr_t)); 93 } 94 static inline void bacpy(bdaddr_t *dst, bdaddr_t *src) 95 { 96 memcpy(dst, src, sizeof(bdaddr_t)); 97 } 98 99 void baswap(bdaddr_t *dst, bdaddr_t *src); 100 char *batostr(bdaddr_t *ba); 101 bdaddr_t *strtoba(char *str); 102 103 /* Common socket structures and functions */ 104 105 #define bt_sk(__sk) ((struct bt_sock *) __sk) 106 107 struct bt_sock { 108 struct sock sk; 109 bdaddr_t src; 110 bdaddr_t dst; 111 struct list_head accept_q; 112 struct sock *parent; 113 u32 defer_setup; 114 }; 115 116 struct bt_sock_list { 117 struct hlist_head head; 118 rwlock_t lock; 119 }; 120 121 int bt_sock_register(int proto, struct net_proto_family *ops); 122 int bt_sock_unregister(int proto); 123 void bt_sock_link(struct bt_sock_list *l, struct sock *s); 124 void bt_sock_unlink(struct bt_sock_list *l, struct sock *s); 125 int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags); 126 uint bt_sock_poll(struct file * file, struct socket *sock, poll_table *wait); 127 int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 128 int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo); 129 130 void bt_accept_enqueue(struct sock *parent, struct sock *sk); 131 void bt_accept_unlink(struct sock *sk); 132 struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock); 133 134 /* Skb helpers */ 135 struct bt_skb_cb { 136 __u8 pkt_type; 137 __u8 incoming; 138 }; 139 #define bt_cb(skb) ((struct bt_skb_cb *)(skb->cb)) 140 141 static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how) 142 { 143 struct sk_buff *skb; 144 145 if ((skb = alloc_skb(len + BT_SKB_RESERVE, how))) { 146 skb_reserve(skb, BT_SKB_RESERVE); 147 bt_cb(skb)->incoming = 0; 148 } 149 return skb; 150 } 151 152 static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk, unsigned long len, 153 int nb, int *err) 154 { 155 struct sk_buff *skb; 156 157 if ((skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err))) { 158 skb_reserve(skb, BT_SKB_RESERVE); 159 bt_cb(skb)->incoming = 0; 160 } 161 162 return skb; 163 } 164 165 static inline int skb_frags_no(struct sk_buff *skb) 166 { 167 register struct sk_buff *frag = skb_shinfo(skb)->frag_list; 168 register int n = 1; 169 170 for (; frag; frag=frag->next, n++); 171 return n; 172 } 173 174 int bt_err(__u16 code); 175 176 extern int hci_sock_init(void); 177 extern void hci_sock_cleanup(void); 178 179 extern int bt_sysfs_init(void); 180 extern void bt_sysfs_cleanup(void); 181 182 extern struct class *bt_class; 183 184 #endif /* __BLUETOOTH_H */ 185