v4.19.13 snapshot.
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
new file mode 100644
index 0000000..ec9d6bc
--- /dev/null
+++ b/include/net/bluetooth/bluetooth.h
@@ -0,0 +1,416 @@
+/*
+ BlueZ - Bluetooth protocol stack for Linux
+ Copyright (C) 2000-2001 Qualcomm Incorporated
+
+ Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2 as
+ published by the Free Software Foundation;
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+ IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+ CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
+ COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
+ SOFTWARE IS DISCLAIMED.
+*/
+
+#ifndef __BLUETOOTH_H
+#define __BLUETOOTH_H
+
+#include <linux/poll.h>
+#include <net/sock.h>
+#include <linux/seq_file.h>
+
+#define BT_SUBSYS_VERSION 2
+#define BT_SUBSYS_REVISION 22
+
+#ifndef AF_BLUETOOTH
+#define AF_BLUETOOTH 31
+#define PF_BLUETOOTH AF_BLUETOOTH
+#endif
+
+/* Bluetooth versions */
+#define BLUETOOTH_VER_1_1 1
+#define BLUETOOTH_VER_1_2 2
+#define BLUETOOTH_VER_2_0 3
+
+/* Reserv for core and drivers use */
+#define BT_SKB_RESERVE 8
+
+#define BTPROTO_L2CAP 0
+#define BTPROTO_HCI 1
+#define BTPROTO_SCO 2
+#define BTPROTO_RFCOMM 3
+#define BTPROTO_BNEP 4
+#define BTPROTO_CMTP 5
+#define BTPROTO_HIDP 6
+#define BTPROTO_AVDTP 7
+
+#define SOL_HCI 0
+#define SOL_L2CAP 6
+#define SOL_SCO 17
+#define SOL_RFCOMM 18
+
+#define BT_SECURITY 4
+struct bt_security {
+ __u8 level;
+ __u8 key_size;
+};
+#define BT_SECURITY_SDP 0
+#define BT_SECURITY_LOW 1
+#define BT_SECURITY_MEDIUM 2
+#define BT_SECURITY_HIGH 3
+#define BT_SECURITY_FIPS 4
+
+#define BT_DEFER_SETUP 7
+
+#define BT_FLUSHABLE 8
+
+#define BT_FLUSHABLE_OFF 0
+#define BT_FLUSHABLE_ON 1
+
+#define BT_POWER 9
+struct bt_power {
+ __u8 force_active;
+};
+#define BT_POWER_FORCE_ACTIVE_OFF 0
+#define BT_POWER_FORCE_ACTIVE_ON 1
+
+#define BT_CHANNEL_POLICY 10
+
+/* BR/EDR only (default policy)
+ * AMP controllers cannot be used.
+ * Channel move requests from the remote device are denied.
+ * If the L2CAP channel is currently using AMP, move the channel to BR/EDR.
+ */
+#define BT_CHANNEL_POLICY_BREDR_ONLY 0
+
+/* BR/EDR Preferred
+ * Allow use of AMP controllers.
+ * If the L2CAP channel is currently on AMP, move it to BR/EDR.
+ * Channel move requests from the remote device are allowed.
+ */
+#define BT_CHANNEL_POLICY_BREDR_PREFERRED 1
+
+/* AMP Preferred
+ * Allow use of AMP controllers
+ * If the L2CAP channel is currently on BR/EDR and AMP controller
+ * resources are available, initiate a channel move to AMP.
+ * Channel move requests from the remote device are allowed.
+ * If the L2CAP socket has not been connected yet, try to create
+ * and configure the channel directly on an AMP controller rather
+ * than BR/EDR.
+ */
+#define BT_CHANNEL_POLICY_AMP_PREFERRED 2
+
+#define BT_VOICE 11
+struct bt_voice {
+ __u16 setting;
+};
+
+#define BT_VOICE_TRANSPARENT 0x0003
+#define BT_VOICE_CVSD_16BIT 0x0060
+
+#define BT_SNDMTU 12
+#define BT_RCVMTU 13
+
+__printf(1, 2)
+void bt_info(const char *fmt, ...);
+__printf(1, 2)
+void bt_warn(const char *fmt, ...);
+__printf(1, 2)
+void bt_err(const char *fmt, ...);
+__printf(1, 2)
+void bt_err_ratelimited(const char *fmt, ...);
+
+#define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__)
+#define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__)
+#define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__)
+#define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__)
+
+#define BT_ERR_RATELIMITED(fmt, ...) bt_err_ratelimited(fmt "\n", ##__VA_ARGS__)
+
+#define bt_dev_info(hdev, fmt, ...) \
+ BT_INFO("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
+#define bt_dev_warn(hdev, fmt, ...) \
+ BT_WARN("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
+#define bt_dev_err(hdev, fmt, ...) \
+ BT_ERR("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
+#define bt_dev_dbg(hdev, fmt, ...) \
+ BT_DBG("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
+
+#define bt_dev_err_ratelimited(hdev, fmt, ...) \
+ BT_ERR_RATELIMITED("%s: " fmt, (hdev)->name, ##__VA_ARGS__)
+
+/* Connection and socket states */
+enum {
+ BT_CONNECTED = 1, /* Equal to TCP_ESTABLISHED to make net code happy */
+ BT_OPEN,
+ BT_BOUND,
+ BT_LISTEN,
+ BT_CONNECT,
+ BT_CONNECT2,
+ BT_CONFIG,
+ BT_DISCONN,
+ BT_CLOSED
+};
+
+/* If unused will be removed by compiler */
+static inline const char *state_to_string(int state)
+{
+ switch (state) {
+ case BT_CONNECTED:
+ return "BT_CONNECTED";
+ case BT_OPEN:
+ return "BT_OPEN";
+ case BT_BOUND:
+ return "BT_BOUND";
+ case BT_LISTEN:
+ return "BT_LISTEN";
+ case BT_CONNECT:
+ return "BT_CONNECT";
+ case BT_CONNECT2:
+ return "BT_CONNECT2";
+ case BT_CONFIG:
+ return "BT_CONFIG";
+ case BT_DISCONN:
+ return "BT_DISCONN";
+ case BT_CLOSED:
+ return "BT_CLOSED";
+ }
+
+ return "invalid state";
+}
+
+/* BD Address */
+typedef struct {
+ __u8 b[6];
+} __packed bdaddr_t;
+
+/* BD Address type */
+#define BDADDR_BREDR 0x00
+#define BDADDR_LE_PUBLIC 0x01
+#define BDADDR_LE_RANDOM 0x02
+
+static inline bool bdaddr_type_is_valid(u8 type)
+{
+ switch (type) {
+ case BDADDR_BREDR:
+ case BDADDR_LE_PUBLIC:
+ case BDADDR_LE_RANDOM:
+ return true;
+ }
+
+ return false;
+}
+
+static inline bool bdaddr_type_is_le(u8 type)
+{
+ switch (type) {
+ case BDADDR_LE_PUBLIC:
+ case BDADDR_LE_RANDOM:
+ return true;
+ }
+
+ return false;
+}
+
+#define BDADDR_ANY (&(bdaddr_t) {{0, 0, 0, 0, 0, 0}})
+#define BDADDR_NONE (&(bdaddr_t) {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}})
+
+/* Copy, swap, convert BD Address */
+static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
+{
+ return memcmp(ba1, ba2, sizeof(bdaddr_t));
+}
+static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
+{
+ memcpy(dst, src, sizeof(bdaddr_t));
+}
+
+void baswap(bdaddr_t *dst, const bdaddr_t *src);
+
+/* Common socket structures and functions */
+
+#define bt_sk(__sk) ((struct bt_sock *) __sk)
+
+struct bt_sock {
+ struct sock sk;
+ struct list_head accept_q;
+ struct sock *parent;
+ unsigned long flags;
+ void (*skb_msg_name)(struct sk_buff *, void *, int *);
+};
+
+enum {
+ BT_SK_DEFER_SETUP,
+ BT_SK_SUSPEND,
+};
+
+struct bt_sock_list {
+ struct hlist_head head;
+ rwlock_t lock;
+#ifdef CONFIG_PROC_FS
+ int (* custom_seq_show)(struct seq_file *, void *);
+#endif
+};
+
+int bt_sock_register(int proto, const struct net_proto_family *ops);
+void bt_sock_unregister(int proto);
+void bt_sock_link(struct bt_sock_list *l, struct sock *s);
+void bt_sock_unlink(struct bt_sock_list *l, struct sock *s);
+int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
+ int flags);
+int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg,
+ size_t len, int flags);
+__poll_t bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait);
+int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
+int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo);
+int bt_sock_wait_ready(struct sock *sk, unsigned long flags);
+
+void bt_accept_enqueue(struct sock *parent, struct sock *sk);
+void bt_accept_unlink(struct sock *sk);
+struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock);
+
+/* Skb helpers */
+struct l2cap_ctrl {
+ u8 sframe:1,
+ poll:1,
+ final:1,
+ fcs:1,
+ sar:2,
+ super:2;
+
+ u16 reqseq;
+ u16 txseq;
+ u8 retries;
+ __le16 psm;
+ bdaddr_t bdaddr;
+ struct l2cap_chan *chan;
+};
+
+struct hci_dev;
+
+typedef void (*hci_req_complete_t)(struct hci_dev *hdev, u8 status, u16 opcode);
+typedef void (*hci_req_complete_skb_t)(struct hci_dev *hdev, u8 status,
+ u16 opcode, struct sk_buff *skb);
+
+#define HCI_REQ_START BIT(0)
+#define HCI_REQ_SKB BIT(1)
+
+struct hci_ctrl {
+ u16 opcode;
+ u8 req_flags;
+ u8 req_event;
+ union {
+ hci_req_complete_t req_complete;
+ hci_req_complete_skb_t req_complete_skb;
+ };
+};
+
+struct bt_skb_cb {
+ u8 pkt_type;
+ u8 force_active;
+ u16 expect;
+ u8 incoming:1;
+ union {
+ struct l2cap_ctrl l2cap;
+ struct hci_ctrl hci;
+ };
+};
+#define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))
+
+#define hci_skb_pkt_type(skb) bt_cb((skb))->pkt_type
+#define hci_skb_expect(skb) bt_cb((skb))->expect
+#define hci_skb_opcode(skb) bt_cb((skb))->hci.opcode
+
+static inline struct sk_buff *bt_skb_alloc(unsigned int len, gfp_t how)
+{
+ struct sk_buff *skb;
+
+ skb = alloc_skb(len + BT_SKB_RESERVE, how);
+ if (skb)
+ skb_reserve(skb, BT_SKB_RESERVE);
+ return skb;
+}
+
+static inline struct sk_buff *bt_skb_send_alloc(struct sock *sk,
+ unsigned long len, int nb, int *err)
+{
+ struct sk_buff *skb;
+
+ skb = sock_alloc_send_skb(sk, len + BT_SKB_RESERVE, nb, err);
+ if (skb)
+ skb_reserve(skb, BT_SKB_RESERVE);
+
+ if (!skb && *err)
+ return NULL;
+
+ *err = sock_error(sk);
+ if (*err)
+ goto out;
+
+ if (sk->sk_shutdown) {
+ *err = -ECONNRESET;
+ goto out;
+ }
+
+ return skb;
+
+out:
+ kfree_skb(skb);
+ return NULL;
+}
+
+int bt_to_errno(u16 code);
+
+void hci_sock_set_flag(struct sock *sk, int nr);
+void hci_sock_clear_flag(struct sock *sk, int nr);
+int hci_sock_test_flag(struct sock *sk, int nr);
+unsigned short hci_sock_get_channel(struct sock *sk);
+u32 hci_sock_get_cookie(struct sock *sk);
+
+int hci_sock_init(void);
+void hci_sock_cleanup(void);
+
+int bt_sysfs_init(void);
+void bt_sysfs_cleanup(void);
+
+int bt_procfs_init(struct net *net, const char *name,
+ struct bt_sock_list *sk_list,
+ int (*seq_show)(struct seq_file *, void *));
+void bt_procfs_cleanup(struct net *net, const char *name);
+
+extern struct dentry *bt_debugfs;
+
+int l2cap_init(void);
+void l2cap_exit(void);
+
+#if IS_ENABLED(CONFIG_BT_BREDR)
+int sco_init(void);
+void sco_exit(void);
+#else
+static inline int sco_init(void)
+{
+ return 0;
+}
+
+static inline void sco_exit(void)
+{
+}
+#endif
+
+int mgmt_init(void);
+void mgmt_exit(void);
+
+void bt_sock_reclassify_lock(struct sock *sk, int proto);
+
+#endif /* __BLUETOOTH_H */