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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /net/bluetooth/cmtp/capi.c
Initial import
Diffstat (limited to 'net/bluetooth/cmtp/capi.c')
-rw-r--r--net/bluetooth/cmtp/capi.c612
1 files changed, 612 insertions, 0 deletions
diff --git a/net/bluetooth/cmtp/capi.c b/net/bluetooth/cmtp/capi.c
new file mode 100644
index 000000000..b0c6c6af7
--- /dev/null
+++ b/net/bluetooth/cmtp/capi.c
@@ -0,0 +1,612 @@
+/*
+ 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.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 %d", 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;
+ struct list_head *p, *n;
+
+ list_for_each_safe(p, n, &session->applications) {
+ app = list_entry(p, struct cmtp_application, 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 %d", 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 %d msgnum %d", 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 %d", 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 %d", 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 %d", 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 %d level3cnt %d datablkcnt %d datablklen %d",
+ 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 %d", 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 %d", 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;
+ struct list_head *p, *n;
+
+ 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_safe(p, n, &session->applications) {
+ app = list_entry(p, struct cmtp_application, list);
+ seq_printf(m, "appl %d -> %d\n", app->appl, app->mapping);
+ }
+
+ return 0;
+}
+
+static int cmtp_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, cmtp_proc_show, PDE_DATA(inode));
+}
+
+static const struct file_operations cmtp_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = cmtp_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+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_fops = &cmtp_proc_fops;
+
+ 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);
+}