1 files changed, 595 insertions, 0 deletions

diff --git a/net/bluetooth/cmtp/capi.c b/net/bluetooth/cmtp/capi.c
new file mode 100644
index 000000000..f3bedc3b6
--- /dev/null
+++ b/net/bluetooth/cmtp/capi.c
@@ -0,0 +1,595 @@
+/*
+   CMTP implementation for Linux Bluetooth stack (BlueZ).
+   Copyright (C) 2002-2003 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/export.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched/signal.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/fcntl.h>
+#include <linux/skbuff.h>
+#include <linux/socket.h>
+#include <linux/ioctl.h>
+#include <linux/file.h>
+#include <linux/wait.h>
+#include <linux/kthread.h>
+#include <net/sock.h>
+
+#include <linux/isdn/capilli.h>
+#include <linux/isdn/capicmd.h>
+#include <linux/isdn/capiutil.h>
+
+#include "cmtp.h"
+
+#define CAPI_INTEROPERABILITY		0x20
+
+#define CAPI_INTEROPERABILITY_REQ	CAPICMD(CAPI_INTEROPERABILITY, CAPI_REQ)
+#define CAPI_INTEROPERABILITY_CONF	CAPICMD(CAPI_INTEROPERABILITY, CAPI_CONF)
+#define CAPI_INTEROPERABILITY_IND	CAPICMD(CAPI_INTEROPERABILITY, CAPI_IND)
+#define CAPI_INTEROPERABILITY_RESP	CAPICMD(CAPI_INTEROPERABILITY, CAPI_RESP)
+
+#define CAPI_INTEROPERABILITY_REQ_LEN	(CAPI_MSG_BASELEN + 2)
+#define CAPI_INTEROPERABILITY_CONF_LEN	(CAPI_MSG_BASELEN + 4)
+#define CAPI_INTEROPERABILITY_IND_LEN	(CAPI_MSG_BASELEN + 2)
+#define CAPI_INTEROPERABILITY_RESP_LEN	(CAPI_MSG_BASELEN + 2)
+
+#define CAPI_FUNCTION_REGISTER		0
+#define CAPI_FUNCTION_RELEASE		1
+#define CAPI_FUNCTION_GET_PROFILE	2
+#define CAPI_FUNCTION_GET_MANUFACTURER	3
+#define CAPI_FUNCTION_GET_VERSION	4
+#define CAPI_FUNCTION_GET_SERIAL_NUMBER	5
+#define CAPI_FUNCTION_MANUFACTURER	6
+#define CAPI_FUNCTION_LOOPBACK		7
+
+
+#define CMTP_MSGNUM	1
+#define CMTP_APPLID	2
+#define CMTP_MAPPING	3
+
+static struct cmtp_application *cmtp_application_add(struct cmtp_session *session, __u16 appl)
+{
+	struct cmtp_application *app = kzalloc(sizeof(*app), GFP_KERNEL);
+
+	BT_DBG("session %p application %p appl %u", session, app, appl);
+
+	if (!app)
+		return NULL;
+
+	app->state = BT_OPEN;
+	app->appl = appl;
+
+	list_add_tail(&app->list, &session->applications);
+
+	return app;
+}
+
+static void cmtp_application_del(struct cmtp_session *session, struct cmtp_application *app)
+{
+	BT_DBG("session %p application %p", session, app);
+
+	if (app) {
+		list_del(&app->list);
+		kfree(app);
+	}
+}
+
+static struct cmtp_application *cmtp_application_get(struct cmtp_session *session, int pattern, __u16 value)
+{
+	struct cmtp_application *app;
+
+	list_for_each_entry(app, &session->applications, list) {
+		switch (pattern) {
+		case CMTP_MSGNUM:
+			if (app->msgnum == value)
+				return app;
+			break;
+		case CMTP_APPLID:
+			if (app->appl == value)
+				return app;
+			break;
+		case CMTP_MAPPING:
+			if (app->mapping == value)
+				return app;
+			break;
+		}
+	}
+
+	return NULL;
+}
+
+static int cmtp_msgnum_get(struct cmtp_session *session)
+{
+	session->msgnum++;
+
+	if ((session->msgnum & 0xff) > 200)
+		session->msgnum = CMTP_INITIAL_MSGNUM + 1;
+
+	return session->msgnum;
+}
+
+static void cmtp_send_capimsg(struct cmtp_session *session, struct sk_buff *skb)
+{
+	struct cmtp_scb *scb = (void *) skb->cb;
+
+	BT_DBG("session %p skb %p len %u", session, skb, skb->len);
+
+	scb->id = -1;
+	scb->data = (CAPIMSG_COMMAND(skb->data) == CAPI_DATA_B3);
+
+	skb_queue_tail(&session->transmit, skb);
+
+	wake_up_interruptible(sk_sleep(session->sock->sk));
+}
+
+static void cmtp_send_interopmsg(struct cmtp_session *session,
+					__u8 subcmd, __u16 appl, __u16 msgnum,
+					__u16 function, unsigned char *buf, int len)
+{
+	struct sk_buff *skb;
+	unsigned char *s;
+
+	BT_DBG("session %p subcmd 0x%02x appl %u msgnum %u", session, subcmd, appl, msgnum);
+
+	skb = alloc_skb(CAPI_MSG_BASELEN + 6 + len, GFP_ATOMIC);
+	if (!skb) {
+		BT_ERR("Can't allocate memory for interoperability packet");
+		return;
+	}
+
+	s = skb_put(skb, CAPI_MSG_BASELEN + 6 + len);
+
+	capimsg_setu16(s, 0, CAPI_MSG_BASELEN + 6 + len);
+	capimsg_setu16(s, 2, appl);
+	capimsg_setu8 (s, 4, CAPI_INTEROPERABILITY);
+	capimsg_setu8 (s, 5, subcmd);
+	capimsg_setu16(s, 6, msgnum);
+
+	/* Interoperability selector (Bluetooth Device Management) */
+	capimsg_setu16(s, 8, 0x0001);
+
+	capimsg_setu8 (s, 10, 3 + len);
+	capimsg_setu16(s, 11, function);
+	capimsg_setu8 (s, 13, len);
+
+	if (len > 0)
+		memcpy(s + 14, buf, len);
+
+	cmtp_send_capimsg(session, skb);
+}
+
+static void cmtp_recv_interopmsg(struct cmtp_session *session, struct sk_buff *skb)
+{
+	struct capi_ctr *ctrl = &session->ctrl;
+	struct cmtp_application *application;
+	__u16 appl, msgnum, func, info;
+	__u32 controller;
+
+	BT_DBG("session %p skb %p len %u", session, skb, skb->len);
+
+	switch (CAPIMSG_SUBCOMMAND(skb->data)) {
+	case CAPI_CONF:
+		if (skb->len < CAPI_MSG_BASELEN + 10)
+			break;
+
+		func = CAPIMSG_U16(skb->data, CAPI_MSG_BASELEN + 5);
+		info = CAPIMSG_U16(skb->data, CAPI_MSG_BASELEN + 8);
+
+		switch (func) {
+		case CAPI_FUNCTION_REGISTER:
+			msgnum = CAPIMSG_MSGID(skb->data);
+
+			application = cmtp_application_get(session, CMTP_MSGNUM, msgnum);
+			if (application) {
+				application->state = BT_CONNECTED;
+				application->msgnum = 0;
+				application->mapping = CAPIMSG_APPID(skb->data);
+				wake_up_interruptible(&session->wait);
+			}
+
+			break;
+
+		case CAPI_FUNCTION_RELEASE:
+			appl = CAPIMSG_APPID(skb->data);
+
+			application = cmtp_application_get(session, CMTP_MAPPING, appl);
+			if (application) {
+				application->state = BT_CLOSED;
+				application->msgnum = 0;
+				wake_up_interruptible(&session->wait);
+			}
+
+			break;
+
+		case CAPI_FUNCTION_GET_PROFILE:
+			if (skb->len < CAPI_MSG_BASELEN + 11 + sizeof(capi_profile))
+				break;
+
+			controller = CAPIMSG_U16(skb->data, CAPI_MSG_BASELEN + 11);
+			msgnum = CAPIMSG_MSGID(skb->data);
+
+			if (!info && (msgnum == CMTP_INITIAL_MSGNUM)) {
+				session->ncontroller = controller;
+				wake_up_interruptible(&session->wait);
+				break;
+			}
+
+			if (!info && ctrl) {
+				memcpy(&ctrl->profile,
+					skb->data + CAPI_MSG_BASELEN + 11,
+					sizeof(capi_profile));
+				session->state = BT_CONNECTED;
+				capi_ctr_ready(ctrl);
+			}
+
+			break;
+
+		case CAPI_FUNCTION_GET_MANUFACTURER:
+			if (skb->len < CAPI_MSG_BASELEN + 15)
+				break;
+
+			if (!info && ctrl) {
+				int len = min_t(uint, CAPI_MANUFACTURER_LEN,
+						skb->data[CAPI_MSG_BASELEN + 14]);
+
+				memset(ctrl->manu, 0, CAPI_MANUFACTURER_LEN);
+				strncpy(ctrl->manu,
+					skb->data + CAPI_MSG_BASELEN + 15, len);
+			}
+
+			break;
+
+		case CAPI_FUNCTION_GET_VERSION:
+			if (skb->len < CAPI_MSG_BASELEN + 32)
+				break;
+
+			if (!info && ctrl) {
+				ctrl->version.majorversion = CAPIMSG_U32(skb->data, CAPI_MSG_BASELEN + 16);
+				ctrl->version.minorversion = CAPIMSG_U32(skb->data, CAPI_MSG_BASELEN + 20);
+				ctrl->version.majormanuversion = CAPIMSG_U32(skb->data, CAPI_MSG_BASELEN + 24);
+				ctrl->version.minormanuversion = CAPIMSG_U32(skb->data, CAPI_MSG_BASELEN + 28);
+			}
+
+			break;
+
+		case CAPI_FUNCTION_GET_SERIAL_NUMBER:
+			if (skb->len < CAPI_MSG_BASELEN + 17)
+				break;
+
+			if (!info && ctrl) {
+				int len = min_t(uint, CAPI_SERIAL_LEN,
+						skb->data[CAPI_MSG_BASELEN + 16]);
+
+				memset(ctrl->serial, 0, CAPI_SERIAL_LEN);
+				strncpy(ctrl->serial,
+					skb->data + CAPI_MSG_BASELEN + 17, len);
+			}
+
+			break;
+		}
+
+		break;
+
+	case CAPI_IND:
+		if (skb->len < CAPI_MSG_BASELEN + 6)
+			break;
+
+		func = CAPIMSG_U16(skb->data, CAPI_MSG_BASELEN + 3);
+
+		if (func == CAPI_FUNCTION_LOOPBACK) {
+			int len = min_t(uint, skb->len - CAPI_MSG_BASELEN - 6,
+						skb->data[CAPI_MSG_BASELEN + 5]);
+			appl = CAPIMSG_APPID(skb->data);
+			msgnum = CAPIMSG_MSGID(skb->data);
+			cmtp_send_interopmsg(session, CAPI_RESP, appl, msgnum, func,
+						skb->data + CAPI_MSG_BASELEN + 6, len);
+		}
+
+		break;
+	}
+
+	kfree_skb(skb);
+}
+
+void cmtp_recv_capimsg(struct cmtp_session *session, struct sk_buff *skb)
+{
+	struct capi_ctr *ctrl = &session->ctrl;
+	struct cmtp_application *application;
+	__u16 appl;
+	__u32 contr;
+
+	BT_DBG("session %p skb %p len %u", session, skb, skb->len);
+
+	if (skb->len < CAPI_MSG_BASELEN)
+		return;
+
+	if (CAPIMSG_COMMAND(skb->data) == CAPI_INTEROPERABILITY) {
+		cmtp_recv_interopmsg(session, skb);
+		return;
+	}
+
+	if (session->flags & BIT(CMTP_LOOPBACK)) {
+		kfree_skb(skb);
+		return;
+	}
+
+	appl = CAPIMSG_APPID(skb->data);
+	contr = CAPIMSG_CONTROL(skb->data);
+
+	application = cmtp_application_get(session, CMTP_MAPPING, appl);
+	if (application) {
+		appl = application->appl;
+		CAPIMSG_SETAPPID(skb->data, appl);
+	} else {
+		BT_ERR("Can't find application with id %u", appl);
+		kfree_skb(skb);
+		return;
+	}
+
+	if ((contr & 0x7f) == 0x01) {
+		contr = (contr & 0xffffff80) | session->num;
+		CAPIMSG_SETCONTROL(skb->data, contr);
+	}
+
+	capi_ctr_handle_message(ctrl, appl, skb);
+}
+
+static int cmtp_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
+{
+	BT_DBG("ctrl %p data %p", ctrl, data);
+
+	return 0;
+}
+
+static void cmtp_reset_ctr(struct capi_ctr *ctrl)
+{
+	struct cmtp_session *session = ctrl->driverdata;
+
+	BT_DBG("ctrl %p", ctrl);
+
+	capi_ctr_down(ctrl);
+
+	atomic_inc(&session->terminate);
+	wake_up_process(session->task);
+}
+
+static void cmtp_register_appl(struct capi_ctr *ctrl, __u16 appl, capi_register_params *rp)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	struct cmtp_session *session = ctrl->driverdata;
+	struct cmtp_application *application;
+	unsigned long timeo = CMTP_INTEROP_TIMEOUT;
+	unsigned char buf[8];
+	int err = 0, nconn, want = rp->level3cnt;
+
+	BT_DBG("ctrl %p appl %u level3cnt %u datablkcnt %u datablklen %u",
+	       ctrl, appl, rp->level3cnt, rp->datablkcnt, rp->datablklen);
+
+	application = cmtp_application_add(session, appl);
+	if (!application) {
+		BT_ERR("Can't allocate memory for new application");
+		return;
+	}
+
+	if (want < 0)
+		nconn = ctrl->profile.nbchannel * -want;
+	else
+		nconn = want;
+
+	if (nconn == 0)
+		nconn = ctrl->profile.nbchannel;
+
+	capimsg_setu16(buf, 0, nconn);
+	capimsg_setu16(buf, 2, rp->datablkcnt);
+	capimsg_setu16(buf, 4, rp->datablklen);
+
+	application->state = BT_CONFIG;
+	application->msgnum = cmtp_msgnum_get(session);
+
+	cmtp_send_interopmsg(session, CAPI_REQ, 0x0000, application->msgnum,
+				CAPI_FUNCTION_REGISTER, buf, 6);
+
+	add_wait_queue(&session->wait, &wait);
+	while (1) {
+		set_current_state(TASK_INTERRUPTIBLE);
+
+		if (!timeo) {
+			err = -EAGAIN;
+			break;
+		}
+
+		if (application->state == BT_CLOSED) {
+			err = -application->err;
+			break;
+		}
+
+		if (application->state == BT_CONNECTED)
+			break;
+
+		if (signal_pending(current)) {
+			err = -EINTR;
+			break;
+		}
+
+		timeo = schedule_timeout(timeo);
+	}
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&session->wait, &wait);
+
+	if (err) {
+		cmtp_application_del(session, application);
+		return;
+	}
+}
+
+static void cmtp_release_appl(struct capi_ctr *ctrl, __u16 appl)
+{
+	struct cmtp_session *session = ctrl->driverdata;
+	struct cmtp_application *application;
+
+	BT_DBG("ctrl %p appl %u", ctrl, appl);
+
+	application = cmtp_application_get(session, CMTP_APPLID, appl);
+	if (!application) {
+		BT_ERR("Can't find application");
+		return;
+	}
+
+	application->msgnum = cmtp_msgnum_get(session);
+
+	cmtp_send_interopmsg(session, CAPI_REQ, application->mapping, application->msgnum,
+				CAPI_FUNCTION_RELEASE, NULL, 0);
+
+	wait_event_interruptible_timeout(session->wait,
+			(application->state == BT_CLOSED), CMTP_INTEROP_TIMEOUT);
+
+	cmtp_application_del(session, application);
+}
+
+static u16 cmtp_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
+{
+	struct cmtp_session *session = ctrl->driverdata;
+	struct cmtp_application *application;
+	__u16 appl;
+	__u32 contr;
+
+	BT_DBG("ctrl %p skb %p", ctrl, skb);
+
+	appl = CAPIMSG_APPID(skb->data);
+	contr = CAPIMSG_CONTROL(skb->data);
+
+	application = cmtp_application_get(session, CMTP_APPLID, appl);
+	if ((!application) || (application->state != BT_CONNECTED)) {
+		BT_ERR("Can't find application with id %u", appl);
+		return CAPI_ILLAPPNR;
+	}
+
+	CAPIMSG_SETAPPID(skb->data, application->mapping);
+
+	if ((contr & 0x7f) == session->num) {
+		contr = (contr & 0xffffff80) | 0x01;
+		CAPIMSG_SETCONTROL(skb->data, contr);
+	}
+
+	cmtp_send_capimsg(session, skb);
+
+	return CAPI_NOERROR;
+}
+
+static char *cmtp_procinfo(struct capi_ctr *ctrl)
+{
+	return "CAPI Message Transport Protocol";
+}
+
+static int cmtp_proc_show(struct seq_file *m, void *v)
+{
+	struct capi_ctr *ctrl = m->private;
+	struct cmtp_session *session = ctrl->driverdata;
+	struct cmtp_application *app;
+
+	seq_printf(m, "%s\n\n", cmtp_procinfo(ctrl));
+	seq_printf(m, "addr %s\n", session->name);
+	seq_printf(m, "ctrl %d\n", session->num);
+
+	list_for_each_entry(app, &session->applications, list) {
+		seq_printf(m, "appl %u -> %u\n", app->appl, app->mapping);
+	}
+
+	return 0;
+}
+
+int cmtp_attach_device(struct cmtp_session *session)
+{
+	unsigned char buf[4];
+	long ret;
+
+	BT_DBG("session %p", session);
+
+	capimsg_setu32(buf, 0, 0);
+
+	cmtp_send_interopmsg(session, CAPI_REQ, 0xffff, CMTP_INITIAL_MSGNUM,
+				CAPI_FUNCTION_GET_PROFILE, buf, 4);
+
+	ret = wait_event_interruptible_timeout(session->wait,
+			session->ncontroller, CMTP_INTEROP_TIMEOUT);
+
+	BT_INFO("Found %d CAPI controller(s) on device %s", session->ncontroller, session->name);
+
+	if (!ret)
+		return -ETIMEDOUT;
+
+	if (!session->ncontroller)
+		return -ENODEV;
+
+	if (session->ncontroller > 1)
+		BT_INFO("Setting up only CAPI controller 1");
+
+	session->ctrl.owner      = THIS_MODULE;
+	session->ctrl.driverdata = session;
+	strcpy(session->ctrl.name, session->name);
+
+	session->ctrl.driver_name   = "cmtp";
+	session->ctrl.load_firmware = cmtp_load_firmware;
+	session->ctrl.reset_ctr     = cmtp_reset_ctr;
+	session->ctrl.register_appl = cmtp_register_appl;
+	session->ctrl.release_appl  = cmtp_release_appl;
+	session->ctrl.send_message  = cmtp_send_message;
+
+	session->ctrl.procinfo      = cmtp_procinfo;
+	session->ctrl.proc_show     = cmtp_proc_show;
+
+	if (attach_capi_ctr(&session->ctrl) < 0) {
+		BT_ERR("Can't attach new controller");
+		return -EBUSY;
+	}
+
+	session->num = session->ctrl.cnr;
+
+	BT_DBG("session %p num %d", session, session->num);
+
+	capimsg_setu32(buf, 0, 1);
+
+	cmtp_send_interopmsg(session, CAPI_REQ, 0xffff, cmtp_msgnum_get(session),
+				CAPI_FUNCTION_GET_MANUFACTURER, buf, 4);
+
+	cmtp_send_interopmsg(session, CAPI_REQ, 0xffff, cmtp_msgnum_get(session),
+				CAPI_FUNCTION_GET_VERSION, buf, 4);
+
+	cmtp_send_interopmsg(session, CAPI_REQ, 0xffff, cmtp_msgnum_get(session),
+				CAPI_FUNCTION_GET_SERIAL_NUMBER, buf, 4);
+
+	cmtp_send_interopmsg(session, CAPI_REQ, 0xffff, cmtp_msgnum_get(session),
+				CAPI_FUNCTION_GET_PROFILE, buf, 4);
+
+	return 0;
+}
+
+void cmtp_detach_device(struct cmtp_session *session)
+{
+	BT_DBG("session %p", session);
+
+	detach_capi_ctr(&session->ctrl);
+}