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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /include/net/bluetooth/rfcomm.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/net/bluetooth/rfcomm.h')
-rw-r--r--include/net/bluetooth/rfcomm.h375
1 files changed, 375 insertions, 0 deletions
diff --git a/include/net/bluetooth/rfcomm.h b/include/net/bluetooth/rfcomm.h
new file mode 100644
index 000000000..99d26879b
--- /dev/null
+++ b/include/net/bluetooth/rfcomm.h
@@ -0,0 +1,375 @@
+/*
+ RFCOMM implementation for Linux Bluetooth stack (BlueZ)
+ Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
+ Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org>
+
+ 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.
+*/
+
+#include <linux/refcount.h>
+
+#ifndef __RFCOMM_H
+#define __RFCOMM_H
+
+#define RFCOMM_CONN_TIMEOUT (HZ * 30)
+#define RFCOMM_DISC_TIMEOUT (HZ * 20)
+#define RFCOMM_AUTH_TIMEOUT (HZ * 25)
+#define RFCOMM_IDLE_TIMEOUT (HZ * 2)
+
+#define RFCOMM_DEFAULT_MTU 127
+#define RFCOMM_DEFAULT_CREDITS 7
+
+#define RFCOMM_MAX_CREDITS 40
+
+#define RFCOMM_SKB_HEAD_RESERVE 8
+#define RFCOMM_SKB_TAIL_RESERVE 2
+#define RFCOMM_SKB_RESERVE (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE)
+
+#define RFCOMM_SABM 0x2f
+#define RFCOMM_DISC 0x43
+#define RFCOMM_UA 0x63
+#define RFCOMM_DM 0x0f
+#define RFCOMM_UIH 0xef
+
+#define RFCOMM_TEST 0x08
+#define RFCOMM_FCON 0x28
+#define RFCOMM_FCOFF 0x18
+#define RFCOMM_MSC 0x38
+#define RFCOMM_RPN 0x24
+#define RFCOMM_RLS 0x14
+#define RFCOMM_PN 0x20
+#define RFCOMM_NSC 0x04
+
+#define RFCOMM_V24_FC 0x02
+#define RFCOMM_V24_RTC 0x04
+#define RFCOMM_V24_RTR 0x08
+#define RFCOMM_V24_IC 0x40
+#define RFCOMM_V24_DV 0x80
+
+#define RFCOMM_RPN_BR_2400 0x0
+#define RFCOMM_RPN_BR_4800 0x1
+#define RFCOMM_RPN_BR_7200 0x2
+#define RFCOMM_RPN_BR_9600 0x3
+#define RFCOMM_RPN_BR_19200 0x4
+#define RFCOMM_RPN_BR_38400 0x5
+#define RFCOMM_RPN_BR_57600 0x6
+#define RFCOMM_RPN_BR_115200 0x7
+#define RFCOMM_RPN_BR_230400 0x8
+
+#define RFCOMM_RPN_DATA_5 0x0
+#define RFCOMM_RPN_DATA_6 0x1
+#define RFCOMM_RPN_DATA_7 0x2
+#define RFCOMM_RPN_DATA_8 0x3
+
+#define RFCOMM_RPN_STOP_1 0
+#define RFCOMM_RPN_STOP_15 1
+
+#define RFCOMM_RPN_PARITY_NONE 0x0
+#define RFCOMM_RPN_PARITY_ODD 0x1
+#define RFCOMM_RPN_PARITY_EVEN 0x3
+#define RFCOMM_RPN_PARITY_MARK 0x5
+#define RFCOMM_RPN_PARITY_SPACE 0x7
+
+#define RFCOMM_RPN_FLOW_NONE 0x00
+
+#define RFCOMM_RPN_XON_CHAR 0x11
+#define RFCOMM_RPN_XOFF_CHAR 0x13
+
+#define RFCOMM_RPN_PM_BITRATE 0x0001
+#define RFCOMM_RPN_PM_DATA 0x0002
+#define RFCOMM_RPN_PM_STOP 0x0004
+#define RFCOMM_RPN_PM_PARITY 0x0008
+#define RFCOMM_RPN_PM_PARITY_TYPE 0x0010
+#define RFCOMM_RPN_PM_XON 0x0020
+#define RFCOMM_RPN_PM_XOFF 0x0040
+#define RFCOMM_RPN_PM_FLOW 0x3F00
+
+#define RFCOMM_RPN_PM_ALL 0x3F7F
+
+struct rfcomm_hdr {
+ u8 addr;
+ u8 ctrl;
+ u8 len; /* Actual size can be 2 bytes */
+} __packed;
+
+struct rfcomm_cmd {
+ u8 addr;
+ u8 ctrl;
+ u8 len;
+ u8 fcs;
+} __packed;
+
+struct rfcomm_mcc {
+ u8 type;
+ u8 len;
+} __packed;
+
+struct rfcomm_pn {
+ u8 dlci;
+ u8 flow_ctrl;
+ u8 priority;
+ u8 ack_timer;
+ __le16 mtu;
+ u8 max_retrans;
+ u8 credits;
+} __packed;
+
+struct rfcomm_rpn {
+ u8 dlci;
+ u8 bit_rate;
+ u8 line_settings;
+ u8 flow_ctrl;
+ u8 xon_char;
+ u8 xoff_char;
+ __le16 param_mask;
+} __packed;
+
+struct rfcomm_rls {
+ u8 dlci;
+ u8 status;
+} __packed;
+
+struct rfcomm_msc {
+ u8 dlci;
+ u8 v24_sig;
+} __packed;
+
+/* ---- Core structures, flags etc ---- */
+
+struct rfcomm_session {
+ struct list_head list;
+ struct socket *sock;
+ struct timer_list timer;
+ unsigned long state;
+ unsigned long flags;
+ int initiator;
+
+ /* Default DLC parameters */
+ int cfc;
+ uint mtu;
+
+ struct list_head dlcs;
+};
+
+struct rfcomm_dlc {
+ struct list_head list;
+ struct rfcomm_session *session;
+ struct sk_buff_head tx_queue;
+ struct timer_list timer;
+
+ struct mutex lock;
+ unsigned long state;
+ unsigned long flags;
+ refcount_t refcnt;
+ u8 dlci;
+ u8 addr;
+ u8 priority;
+ u8 v24_sig;
+ u8 remote_v24_sig;
+ u8 mscex;
+ u8 out;
+ u8 sec_level;
+ u8 role_switch;
+ u32 defer_setup;
+
+ uint mtu;
+ uint cfc;
+ uint rx_credits;
+ uint tx_credits;
+
+ void *owner;
+
+ void (*data_ready)(struct rfcomm_dlc *d, struct sk_buff *skb);
+ void (*state_change)(struct rfcomm_dlc *d, int err);
+ void (*modem_status)(struct rfcomm_dlc *d, u8 v24_sig);
+};
+
+/* DLC and session flags */
+#define RFCOMM_RX_THROTTLED 0
+#define RFCOMM_TX_THROTTLED 1
+#define RFCOMM_TIMED_OUT 2
+#define RFCOMM_MSC_PENDING 3
+#define RFCOMM_SEC_PENDING 4
+#define RFCOMM_AUTH_PENDING 5
+#define RFCOMM_AUTH_ACCEPT 6
+#define RFCOMM_AUTH_REJECT 7
+#define RFCOMM_DEFER_SETUP 8
+#define RFCOMM_ENC_DROP 9
+
+/* Scheduling flags and events */
+#define RFCOMM_SCHED_WAKEUP 31
+
+/* MSC exchange flags */
+#define RFCOMM_MSCEX_TX 1
+#define RFCOMM_MSCEX_RX 2
+#define RFCOMM_MSCEX_OK (RFCOMM_MSCEX_TX + RFCOMM_MSCEX_RX)
+
+/* CFC states */
+#define RFCOMM_CFC_UNKNOWN -1
+#define RFCOMM_CFC_DISABLED 0
+#define RFCOMM_CFC_ENABLED RFCOMM_MAX_CREDITS
+
+/* ---- RFCOMM SEND RPN ---- */
+int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
+ u8 bit_rate, u8 data_bits, u8 stop_bits,
+ u8 parity, u8 flow_ctrl_settings,
+ u8 xon_char, u8 xoff_char, u16 param_mask);
+
+/* ---- RFCOMM DLCs (channels) ---- */
+struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t prio);
+void rfcomm_dlc_free(struct rfcomm_dlc *d);
+int rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst,
+ u8 channel);
+int rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
+int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb);
+void rfcomm_dlc_send_noerror(struct rfcomm_dlc *d, struct sk_buff *skb);
+int rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig);
+int rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig);
+void rfcomm_dlc_accept(struct rfcomm_dlc *d);
+struct rfcomm_dlc *rfcomm_dlc_exists(bdaddr_t *src, bdaddr_t *dst, u8 channel);
+
+#define rfcomm_dlc_lock(d) mutex_lock(&d->lock)
+#define rfcomm_dlc_unlock(d) mutex_unlock(&d->lock)
+
+static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d)
+{
+ refcount_inc(&d->refcnt);
+}
+
+static inline void rfcomm_dlc_put(struct rfcomm_dlc *d)
+{
+ if (refcount_dec_and_test(&d->refcnt))
+ rfcomm_dlc_free(d);
+}
+
+void __rfcomm_dlc_throttle(struct rfcomm_dlc *d);
+void __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d);
+
+static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d)
+{
+ if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags))
+ __rfcomm_dlc_throttle(d);
+}
+
+static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
+{
+ if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags))
+ __rfcomm_dlc_unthrottle(d);
+}
+
+/* ---- RFCOMM sessions ---- */
+void rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src,
+ bdaddr_t *dst);
+
+/* ---- RFCOMM sockets ---- */
+struct sockaddr_rc {
+ sa_family_t rc_family;
+ bdaddr_t rc_bdaddr;
+ u8 rc_channel;
+};
+
+#define RFCOMM_CONNINFO 0x02
+struct rfcomm_conninfo {
+ __u16 hci_handle;
+ __u8 dev_class[3];
+};
+
+#define RFCOMM_LM 0x03
+#define RFCOMM_LM_MASTER 0x0001
+#define RFCOMM_LM_AUTH 0x0002
+#define RFCOMM_LM_ENCRYPT 0x0004
+#define RFCOMM_LM_TRUSTED 0x0008
+#define RFCOMM_LM_RELIABLE 0x0010
+#define RFCOMM_LM_SECURE 0x0020
+#define RFCOMM_LM_FIPS 0x0040
+
+#define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk)
+
+struct rfcomm_pinfo {
+ struct bt_sock bt;
+ bdaddr_t src;
+ bdaddr_t dst;
+ struct rfcomm_dlc *dlc;
+ u8 channel;
+ u8 sec_level;
+ u8 role_switch;
+};
+
+int rfcomm_init_sockets(void);
+void rfcomm_cleanup_sockets(void);
+
+int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel,
+ struct rfcomm_dlc **d);
+
+/* ---- RFCOMM TTY ---- */
+#define RFCOMM_MAX_DEV 256
+
+#define RFCOMMCREATEDEV _IOW('R', 200, int)
+#define RFCOMMRELEASEDEV _IOW('R', 201, int)
+#define RFCOMMGETDEVLIST _IOR('R', 210, int)
+#define RFCOMMGETDEVINFO _IOR('R', 211, int)
+#define RFCOMMSTEALDLC _IOW('R', 220, int)
+
+/* rfcomm_dev.flags bit definitions */
+#define RFCOMM_REUSE_DLC 0
+#define RFCOMM_RELEASE_ONHUP 1
+#define RFCOMM_HANGUP_NOW 2
+#define RFCOMM_TTY_ATTACHED 3
+#define RFCOMM_DEFUNCT_BIT4 4 /* don't reuse this bit - userspace visible */
+
+/* rfcomm_dev.status bit definitions */
+#define RFCOMM_DEV_RELEASED 0
+#define RFCOMM_TTY_OWNED 1
+
+struct rfcomm_dev_req {
+ s16 dev_id;
+ u32 flags;
+ bdaddr_t src;
+ bdaddr_t dst;
+ u8 channel;
+};
+
+struct rfcomm_dev_info {
+ s16 id;
+ u32 flags;
+ u16 state;
+ bdaddr_t src;
+ bdaddr_t dst;
+ u8 channel;
+};
+
+struct rfcomm_dev_list_req {
+ u16 dev_num;
+ struct rfcomm_dev_info dev_info[];
+};
+
+int rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
+
+#ifdef CONFIG_BT_RFCOMM_TTY
+int rfcomm_init_ttys(void);
+void rfcomm_cleanup_ttys(void);
+#else
+static inline int rfcomm_init_ttys(void)
+{
+ return 0;
+}
+static inline void rfcomm_cleanup_ttys(void)
+{
+}
+#endif
+#endif /* __RFCOMM_H */