Re: [PATCH][HCIRAW] Initial proposal for hciraw plugin.

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Hi Luiz/Marcel

On Thu, Apr 23, 2009 at 12:52 AM, Luiz Augusto von Dentz
<luiz.dentz@xxxxxxxxx> wrote:
> Hi Alok,
>
> On Wed, Apr 22, 2009 at 9:16 AM, alok barsode <alokbarsode@xxxxxxxxx> wrote:
>> Hi Marcel,
>>
>> Here are the initial patches for hciraw plugin.
>>
>> I have pulled the IO event stuff from main.c to hciraw.c
>>
>> Let me know what you think.
>>
>> Cheers,
>> Alok.
>>
>
> The logic on Using-device_event-to-register-and-setup-already-kno.patch
> seems to be wrong, it will not do what the current code does which is
> to always register the adapter and in case of being up initialize it.
>
yup its wrong. it wouldn't register already known "down" adapters. the
devup logic was wrong too.
Thanks for catching this.

Sending new patches which fix this. These are against the latest tree (rel 4.37)
Let me know what you think.

> --
> Luiz Augusto von Dentz
> Engenheiro de Computação
>

Cheers,
Alok.
From 9a488587446c6e41e38fbb0277ae73f7504815d1 Mon Sep 17 00:00:00 2001
From: Alok Barsode <alok.barsode@xxxxxxxxxx>
Date: Tue, 21 Apr 2009 20:16:04 +0530
Subject: [PATCH 1/5] Initialing HCI raw socket plugin "hciops".

---
 plugins/Makefile.am |    6 +++++-
 plugins/hciops.c    |   43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+), 1 deletions(-)
 create mode 100644 plugins/hciops.c

diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index a1e933f..bbabf64 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -13,7 +13,7 @@ else
 service_plugins =
 endif
 
-plugin_LTLIBRARIES = hal.la $(netlink_plugins) $(service_plugins)
+plugin_LTLIBRARIES = hal.la hciops.la $(netlink_plugins) $(service_plugins)
 
 noinst_LTLIBRARIES = echo.la storage.la
 
@@ -21,6 +21,8 @@ echo_la_SOURCES = echo.c
 
 storage_la_SOURCES = storage.c
 
+hciops_la_SOURCES = hciops.c
+
 if NETLINK
 netlink_la_SOURCES = netlink.c
 
@@ -47,6 +49,7 @@ all-local:
 	@$(LN_S) -f $(top_srcdir)/network/.libs/network.so
 	@$(LN_S) -f .libs/service.so
 	@$(LN_S) -f .libs/hal.so
+	@$(LN_S) -f .libs/hciops.so
 
 clean-local:
 	@rm -f hal.so
@@ -55,3 +58,4 @@ clean-local:
 	@rm -f serial.so
 	@rm -f audio.so
 	@rm -f input.so
+	@rm -f hciops.so
diff --git a/plugins/hciops.c b/plugins/hciops.c
new file mode 100644
index 0000000..4f56443
--- /dev/null
+++ b/plugins/hciops.c
@@ -0,0 +1,43 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2004-2009  Marcel Holtmann <marcel@xxxxxxxxxxxx>
+ *  Copyright (C) 2009	     Alok Barsode <alok.barsode@xxxxxxxxxx>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <bluetooth/bluetooth.h>
+
+#include "plugin.h"
+#include "logging.h"
+
+static int hciops_init(void)
+{
+	return 0;
+}
+
+static void hciops_exit(void)
+{
+}
+
+BLUETOOTH_PLUGIN_DEFINE(hciops, VERSION,
+			BLUETOOTH_PLUGIN_PRIORITY_DEFAULT, hciops_init, hciops_exit)
-- 
1.5.6.3

From a08635603774aa02a1c8253fad576ae103eaed75 Mon Sep 17 00:00:00 2001
From: Alok Barsode <alok.barsode@xxxxxxxxxx>
Date: Tue, 21 Apr 2009 21:58:07 +0530
Subject: [PATCH 2/5] exporting device_event().

---
 src/hcid.h |    1 +
 src/main.c |   28 ++++++++++++++--------------
 2 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/src/hcid.h b/src/hcid.h
index 6c26157..236449d 100644
--- a/src/hcid.h
+++ b/src/hcid.h
@@ -68,6 +68,7 @@ struct main_opts {
 
 extern struct main_opts main_opts;
 
+void device_event(int event, int dev_id);
 void hci_req_queue_remove(int dev_id, bdaddr_t *dba);
 
 void start_security_manager(int hdev);
diff --git a/src/main.c b/src/main.c
index f39fc11..02b4ebf 100644
--- a/src/main.c
+++ b/src/main.c
@@ -556,30 +556,28 @@ static void init_defaults(void)
 		strcpy(main_opts.host_name, "noname");
 }
 
-static inline void device_event(GIOChannel *chan, evt_stack_internal *si)
+void device_event(int event, int dev_id)
 {
-	evt_si_device *sd = (void *) &si->data;
-
-	switch (sd->event) {
+	switch (event) {
 	case HCI_DEV_REG:
-		info("HCI dev %d registered", sd->dev_id);
-		device_devreg_setup(sd->dev_id, FALSE);
+		info("HCI dev %d registered", dev_id);
+		device_devreg_setup(dev_id, FALSE);
 		break;
 
 	case HCI_DEV_UNREG:
-		info("HCI dev %d unregistered", sd->dev_id);
-		manager_unregister_adapter(sd->dev_id);
+		info("HCI dev %d unregistered", dev_id);
+		manager_unregister_adapter(dev_id);
 		break;
 
 	case HCI_DEV_UP:
-		info("HCI dev %d up", sd->dev_id);
-		device_devup_setup(sd->dev_id);
+		info("HCI dev %d up", dev_id);
+		device_devup_setup(dev_id);
 		break;
 
 	case HCI_DEV_DOWN:
-		info("HCI dev %d down", sd->dev_id);
-		manager_stop_adapter(sd->dev_id);
-		stop_security_manager(sd->dev_id);
+		info("HCI dev %d down", dev_id);
+		manager_stop_adapter(dev_id);
+		stop_security_manager(dev_id);
 		break;
 	}
 }
@@ -589,6 +587,7 @@ static gboolean io_stack_event(GIOChannel *chan, GIOCondition cond,
 {
 	unsigned char buf[HCI_MAX_FRAME_SIZE], *ptr;
 	evt_stack_internal *si;
+	evt_si_device *sd;
 	hci_event_hdr *eh;
 	int type;
 	size_t len;
@@ -620,7 +619,8 @@ static gboolean io_stack_event(GIOChannel *chan, GIOCondition cond,
 	si = (evt_stack_internal *) ptr;
 	switch (si->type) {
 	case EVT_SI_DEVICE:
-		device_event(chan, si);
+		sd = (void *) &si->data;
+		device_event(sd->event, sd->dev_id);
 		break;
 	}
 
-- 
1.5.6.3

From e3d124831b1ad67fae25e3cfe926d69f0f2a10c1 Mon Sep 17 00:00:00 2001
From: Alok Barsode <alok.barsode@xxxxxxxxxx>
Date: Thu, 23 Apr 2009 16:42:16 +0530
Subject: [PATCH 3/5] Modifying device_devreg_setup. Check if device is up in
 device_devreg_setup instead of using devup parameter.

---
 src/main.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/main.c b/src/main.c
index 02b4ebf..d12edc5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -477,9 +477,10 @@ fail:
 	exit(1);
 }
 
-static void device_devreg_setup(int dev_id, gboolean devup)
+static void device_devreg_setup(int dev_id)
 {
 	struct hci_dev_info di;
+	gboolean devup;
 
 	init_device(dev_id);
 
@@ -488,6 +489,8 @@ static void device_devreg_setup(int dev_id, gboolean devup)
 	if (hci_devinfo(dev_id, &di) < 0)
 		return;
 
+	devup = hci_test_bit(HCI_UP, &di.flags);
+
 	if (!hci_test_bit(HCI_RAW, &di.flags))
 		manager_register_adapter(dev_id, devup);
 }
@@ -528,10 +531,10 @@ static void init_all_devices(int ctl)
 	for (i = 0; i < dl->dev_num; i++, dr++) {
 		gboolean devup;
 
-		devup = hci_test_bit(HCI_UP, &dr->dev_opt);
-
 		info("HCI dev %d registered", dr->dev_id);
-		device_devreg_setup(dr->dev_id, devup);
+		device_devreg_setup(dr->dev_id);
+
+		devup = hci_test_bit(HCI_UP, &dr->dev_opt);
 		if (devup) {
 			info("HCI dev %d already up", dr->dev_id);
 			device_devup_setup(dr->dev_id);
@@ -561,7 +564,7 @@ void device_event(int event, int dev_id)
 	switch (event) {
 	case HCI_DEV_REG:
 		info("HCI dev %d registered", dev_id);
-		device_devreg_setup(dev_id, FALSE);
+		device_devreg_setup(dev_id);
 		break;
 
 	case HCI_DEV_UNREG:
-- 
1.5.6.3

From 294b9b4ffd904b9ad72cb94664a2a9f117a5d9d3 Mon Sep 17 00:00:00 2001
From: Alok Barsode <alok.barsode@xxxxxxxxxx>
Date: Thu, 23 Apr 2009 16:46:41 +0530
Subject: [PATCH 4/5] Using device_event to register and setup already known devices.

---
 src/main.c |    9 +++------
 1 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/src/main.c b/src/main.c
index d12edc5..93dbf71 100644
--- a/src/main.c
+++ b/src/main.c
@@ -531,14 +531,11 @@ static void init_all_devices(int ctl)
 	for (i = 0; i < dl->dev_num; i++, dr++) {
 		gboolean devup;
 
-		info("HCI dev %d registered", dr->dev_id);
-		device_devreg_setup(dr->dev_id);
+		device_event(HCI_DEV_REG, dr->dev_id);
 
 		devup = hci_test_bit(HCI_UP, &dr->dev_opt);
-		if (devup) {
-			info("HCI dev %d already up", dr->dev_id);
-			device_devup_setup(dr->dev_id);
-		}
+		if (devup)
+			device_event(HCI_DEV_UP, dr->dev_id);
 	}
 
 	g_free(dl);
-- 
1.5.6.3

From 2a754fe6f71b834febd01fdece51fc0e53cc4723 Mon Sep 17 00:00:00 2001
From: Alok Barsode <alok.barsode@xxxxxxxxxx>
Date: Thu, 23 Apr 2009 17:35:02 +0530
Subject: [PATCH 5/5] Initializing hciops plugin. Adding IO event handing.

---
 plugins/hciops.c |  134 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/main.c       |  122 +------------------------------------------------
 2 files changed, 134 insertions(+), 122 deletions(-)

diff --git a/plugins/hciops.c b/plugins/hciops.c
index 4f56443..32f82d0 100644
--- a/plugins/hciops.c
+++ b/plugins/hciops.c
@@ -24,17 +24,149 @@
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif
+#include <errno.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
 
 #include <bluetooth/bluetooth.h>
+#include <bluetooth/hci.h>
+#include <bluetooth/hci_lib.h>
 
+#include <glib.h>
+
+#include "hcid.h"
 #include "plugin.h"
 #include "logging.h"
 
-static int hciops_init(void)
+
+static int init_all_devices(int ctl)
 {
+	struct hci_dev_list_req *dl;
+	struct hci_dev_req *dr;
+	int i;
+
+	dl = g_try_malloc0(HCI_MAX_DEV * sizeof(struct hci_dev_req) + sizeof(uint16_t));
+	if (!dl) {
+		info("Can't allocate devlist buffer: %s (%d)",
+							strerror(errno), errno);
+		return errno;
+	}
+
+	dl->dev_num = HCI_MAX_DEV;
+	dr = dl->dev_req;
+
+	if (ioctl(ctl, HCIGETDEVLIST, (void *) dl) < 0) {
+		info("Can't get device list: %s (%d)",
+							strerror(errno), errno);
+		return errno;
+	}
+
+	for (i = 0; i < dl->dev_num; i++, dr++) {
+		gboolean devup;
+
+		device_event(HCI_DEV_REG, dr->dev_id);
+
+		devup = hci_test_bit(HCI_UP, &dr->dev_opt);
+		if (devup)
+			device_event(HCI_DEV_UP, dr->dev_id);
+	}
+
+	g_free(dl);
 	return 0;
 }
 
+static gboolean io_stack_event(GIOChannel *chan, GIOCondition cond,
+								gpointer data)
+{
+	unsigned char buf[HCI_MAX_FRAME_SIZE], *ptr;
+	evt_stack_internal *si;
+	evt_si_device *sd;
+	hci_event_hdr *eh;
+	int type;
+	size_t len;
+	GIOError err;
+
+	ptr = buf;
+
+	err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len);
+	if (err) {
+		if (err == G_IO_ERROR_AGAIN)
+			return TRUE;
+
+		error("Read from control socket failed: %s (%d)",
+							strerror(errno), errno);
+		return FALSE;
+	}
+
+	type = *ptr++;
+
+	if (type != HCI_EVENT_PKT)
+		return TRUE;
+
+	eh = (hci_event_hdr *) ptr;
+	if (eh->evt != EVT_STACK_INTERNAL)
+		return TRUE;
+
+	ptr += HCI_EVENT_HDR_SIZE;
+
+	si = (evt_stack_internal *) ptr;
+	switch (si->type) {
+	case EVT_SI_DEVICE:
+		sd = (void *) &si->data;
+		device_event(sd->event, sd->dev_id);
+		break;
+	}
+
+	return TRUE;
+}
+
+static int hciops_init(void)
+{
+	struct sockaddr_hci addr;
+	struct hci_filter flt;
+	GIOChannel *ctl_io;
+	int sock;
+
+	/* Create and bind HCI socket */
+	sock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
+	if (sock < 0) {
+		error("Can't open HCI socket: %s (%d)", strerror(errno),
+								errno);
+		return errno;
+	}
+
+	/* Set filter */
+	hci_filter_clear(&flt);
+	hci_filter_set_ptype(HCI_EVENT_PKT, &flt);
+	hci_filter_set_event(EVT_STACK_INTERNAL, &flt);
+	if (setsockopt(sock, SOL_HCI, HCI_FILTER, &flt,
+							sizeof(flt)) < 0) {
+		error("Can't set filter: %s (%d)", strerror(errno), errno);
+		return errno;
+	}
+
+	memset(&addr, 0, sizeof(addr));
+	addr.hci_family = AF_BLUETOOTH;
+	addr.hci_dev = HCI_DEV_NONE;
+	if (bind(sock, (struct sockaddr *) &addr,
+							sizeof(addr)) < 0) {
+		error("Can't bind HCI socket: %s (%d)",
+							strerror(errno), errno);
+		return errno;
+	}
+
+	ctl_io = g_io_channel_unix_new(sock);
+	g_io_channel_set_close_on_unref(ctl_io, TRUE);
+
+	g_io_add_watch(ctl_io, G_IO_IN, io_stack_event, NULL);
+
+	g_io_channel_unref(ctl_io);
+
+	/* Initialize already connected devices */
+	return init_all_devices(sock);
+}
+
 static void hciops_exit(void)
 {
 }
diff --git a/src/main.c b/src/main.c
index 93dbf71..309d4bb 100644
--- a/src/main.c
+++ b/src/main.c
@@ -506,41 +506,6 @@ static void device_devup_setup(int dev_id)
 		stop_security_manager(dev_id);
 }
 
-static void init_all_devices(int ctl)
-{
-	struct hci_dev_list_req *dl;
-	struct hci_dev_req *dr;
-	int i;
-
-	dl = g_try_malloc0(HCI_MAX_DEV * sizeof(struct hci_dev_req) + sizeof(uint16_t));
-	if (!dl) {
-		info("Can't allocate devlist buffer: %s (%d)",
-							strerror(errno), errno);
-		exit(1);
-	}
-
-	dl->dev_num = HCI_MAX_DEV;
-	dr = dl->dev_req;
-
-	if (ioctl(ctl, HCIGETDEVLIST, (void *) dl) < 0) {
-		info("Can't get device list: %s (%d)",
-							strerror(errno), errno);
-		exit(1);
-	}
-
-	for (i = 0; i < dl->dev_num; i++, dr++) {
-		gboolean devup;
-
-		device_event(HCI_DEV_REG, dr->dev_id);
-
-		devup = hci_test_bit(HCI_UP, &dr->dev_opt);
-		if (devup)
-			device_event(HCI_DEV_UP, dr->dev_id);
-	}
-
-	g_free(dl);
-}
-
 static void init_defaults(void)
 {
 	/* Default HCId settings */
@@ -582,51 +547,6 @@ void device_event(int event, int dev_id)
 	}
 }
 
-static gboolean io_stack_event(GIOChannel *chan, GIOCondition cond,
-								gpointer data)
-{
-	unsigned char buf[HCI_MAX_FRAME_SIZE], *ptr;
-	evt_stack_internal *si;
-	evt_si_device *sd;
-	hci_event_hdr *eh;
-	int type;
-	size_t len;
-	GIOError err;
-
-	ptr = buf;
-
-	err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len);
-	if (err) {
-		if (err == G_IO_ERROR_AGAIN)
-			return TRUE;
-
-		error("Read from control socket failed: %s (%d)",
-							strerror(errno), errno);
-		return FALSE;
-	}
-
-	type = *ptr++;
-
-	if (type != HCI_EVENT_PKT)
-		return TRUE;
-
-	eh = (hci_event_hdr *) ptr;
-	if (eh->evt != EVT_STACK_INTERNAL)
-		return TRUE;
-
-	ptr += HCI_EVENT_HDR_SIZE;
-
-	si = (evt_stack_internal *) ptr;
-	switch (si->type) {
-	case EVT_SI_DEVICE:
-		sd = (void *) &si->data;
-		device_event(sd->event, sd->dev_id);
-		break;
-	}
-
-	return TRUE;
-}
-
 static GMainLoop *event_loop;
 
 static void sig_term(int sig)
@@ -655,10 +575,8 @@ int main(int argc, char *argv[])
 {
 	GOptionContext *context;
 	GError *err = NULL;
-	struct sockaddr_hci addr;
-	struct hci_filter flt;
 	struct sigaction sa;
-	GIOChannel *ctl_io, *child_io;
+	GIOChannel *child_io;
 	uint16_t mtu = 0;
 	GKeyFile *config;
 
@@ -706,34 +624,6 @@ int main(int argc, char *argv[])
 		enable_debug();
 	}
 
-	/* Create and bind HCI socket */
-	main_opts.sock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
-	if (main_opts.sock < 0) {
-		error("Can't open HCI socket: %s (%d)", strerror(errno),
-								errno);
-		exit(1);
-	}
-
-	/* Set filter */
-	hci_filter_clear(&flt);
-	hci_filter_set_ptype(HCI_EVENT_PKT, &flt);
-	hci_filter_set_event(EVT_STACK_INTERNAL, &flt);
-	if (setsockopt(main_opts.sock, SOL_HCI, HCI_FILTER, &flt,
-							sizeof(flt)) < 0) {
-		error("Can't set filter: %s (%d)", strerror(errno), errno);
-		exit(1);
-	}
-
-	memset(&addr, 0, sizeof(addr));
-	addr.hci_family = AF_BLUETOOTH;
-	addr.hci_dev = HCI_DEV_NONE;
-	if (bind(main_opts.sock, (struct sockaddr *) &addr,
-							sizeof(addr)) < 0) {
-		error("Can't bind HCI socket: %s (%d)",
-							strerror(errno), errno);
-		exit(1);
-	}
-
 	config = load_config(CONFIGDIR "/main.conf");
 
 	parse_config(config);
@@ -768,16 +658,6 @@ int main(int argc, char *argv[])
 
 	event_loop = g_main_loop_new(NULL, FALSE);
 
-	ctl_io = g_io_channel_unix_new(main_opts.sock);
-	g_io_channel_set_close_on_unref(ctl_io, TRUE);
-
-	g_io_add_watch(ctl_io, G_IO_IN, io_stack_event, NULL);
-
-	g_io_channel_unref(ctl_io);
-
-	/* Initialize already connected devices */
-	init_all_devices(main_opts.sock);
-
 	starting = FALSE;
 
 	manager_startup_complete();
-- 
1.5.6.3


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