[PATCH 0/3] New versions of some previous mgmt patches

[PATCH 0/3] New versions of some previous mgmt patches

[johan.hedberg]

Hi,

These are fixed versions of the previous patch set that had a clear
consensus on how to proceed. The two patches left out are the flag
renaming since there still wasn't an exact consensus on e.g. how
HCI_RUNNING should be handled.

Johan

[PATCH 1/3] Bluetooth: Merge boolean members of struct hci_conn into flags

[johan.hedberg]

From: Johan Hedberg <johan.hedberg@intel.com>

Now that the flags member of struct hci_conn is supposed to accommodate
any boolean type values we can easily merge all boolean members into it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
 include/net/bluetooth/hci_core.h |    6 +++---
 net/bluetooth/hci_conn.c         |   15 +++++++++------
 net/bluetooth/hci_event.c        |   21 +++++++++++++--------
 3 files changed, 25 insertions(+), 17 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 18af542..7a03311 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -286,7 +286,6 @@ struct hci_conn {
 	__u8		attempt;
 	__u8		dev_class[3];
 	__u8		features[8];
-	__u8		ssp_mode;
 	__u16		interval;
 	__u16		pkt_type;
 	__u16		link_policy;
@@ -298,12 +297,10 @@ struct hci_conn {
 	__u8		pin_length;
 	__u8		enc_key_size;
 	__u8		io_capability;
-	__u8		power_save;
 	__u16		disc_timeout;
 	unsigned long	flags;
 
 	__u8		remote_cap;
-	__u8		remote_oob;
 	__u8		remote_auth;
 
 	unsigned int	sent;
@@ -410,6 +407,9 @@ enum {
 	HCI_CONN_SCO_SETUP_PEND,
 	HCI_CONN_LE_SMP_PEND,
 	HCI_CONN_MGMT_CONNECTED,
+	HCI_CONN_SSP_ENABLED,
+	HCI_CONN_POWER_SAVE,
+	HCI_CONN_REMOTE_OOB,
 };
 
 static inline void hci_conn_hash_init(struct hci_dev *hdev)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index a707d19..8288e30 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -105,7 +105,8 @@ void hci_acl_connect(struct hci_conn *conn)
 		}
 
 		memcpy(conn->dev_class, ie->data.dev_class, 3);
-		conn->ssp_mode = ie->data.ssp_mode;
+		if (ie->data.ssp_mode > 0)
+			set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 	}
 
 	cp.pkt_type = cpu_to_le16(conn->pkt_type);
@@ -386,7 +387,7 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
 	conn->remote_auth = 0xff;
 	conn->key_type = 0xff;
 
-	conn->power_save = 1;
+	set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
 	conn->disc_timeout = HCI_DISCONN_TIMEOUT;
 
 	switch (type) {
@@ -586,7 +587,7 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8
 
 	if (acl->state == BT_CONNECTED &&
 			(sco->state == BT_OPEN || sco->state == BT_CLOSED)) {
-		acl->power_save = 1;
+		set_bit(HCI_CONN_POWER_SAVE, &acl->flags);
 		hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON);
 
 		if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) {
@@ -607,7 +608,8 @@ int hci_conn_check_link_mode(struct hci_conn *conn)
 {
 	BT_DBG("conn %p", conn);
 
-	if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0 &&
+	if (test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) &&
+					conn->hdev->ssp_mode > 0 &&
 					!(conn->link_mode & HCI_LM_ENCRYPT))
 		return 0;
 
@@ -671,7 +673,8 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
 	/* For non 2.1 devices and low security level we don't need the link
 	   key. */
 	if (sec_level == BT_SECURITY_LOW &&
-				(!conn->ssp_mode || !conn->hdev->ssp_mode))
+			(!test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) ||
+							!conn->hdev->ssp_mode))
 		return 1;
 
 	/* For other security levels we need the link key. */
@@ -778,7 +781,7 @@ void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active)
 	if (conn->mode != HCI_CM_SNIFF)
 		goto timer;
 
-	if (!conn->power_save && !force_active)
+	if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active)
 		goto timer;
 
 	if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) {
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 22d1455..cbb0fa2 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1264,7 +1264,8 @@ static int hci_outgoing_auth_needed(struct hci_dev *hdev,
 
 	/* Only request authentication for SSP connections or non-SSP
 	 * devices with sec_level HIGH or if MITM protection is requested */
-	if (!(hdev->ssp_mode > 0 && conn->ssp_mode > 0) &&
+	if (!(hdev->ssp_mode > 0 &&
+			test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)) &&
 				conn->pending_sec_level != BT_SECURITY_HIGH &&
 				!(conn->auth_type & 0x01))
 		return 0;
@@ -1838,7 +1839,8 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 		goto unlock;
 
 	if (!ev->status) {
-		if (!(conn->ssp_mode > 0 && hdev->ssp_mode > 0) &&
+		if (!(test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) &&
+							hdev->ssp_mode > 0) &&
 				test_bit(HCI_CONN_REAUTH_PEND,	&conn->flags)) {
 			BT_INFO("re-auth of legacy device is not possible.");
 		} else {
@@ -1853,7 +1855,8 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 	clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
 
 	if (conn->state == BT_CONFIG) {
-		if (!ev->status && hdev->ssp_mode > 0 && conn->ssp_mode > 0) {
+		if (!ev->status && hdev->ssp_mode > 0 &&
+				test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)) {
 			struct hci_cp_set_conn_encrypt cp;
 			cp.handle  = ev->handle;
 			cp.encrypt = 0x01;
@@ -2505,9 +2508,9 @@ static inline void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb
 
 		if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) {
 			if (conn->mode == HCI_CM_ACTIVE)
-				conn->power_save = 1;
+				set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
 			else
-				conn->power_save = 0;
+				clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
 		}
 
 		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
@@ -2780,7 +2783,8 @@ static inline void hci_remote_ext_features_evt(struct hci_dev *hdev, struct sk_b
 		if (ie)
 			ie->data.ssp_mode = (ev->features[0] & 0x01);
 
-		conn->ssp_mode = (ev->features[0] & 0x01);
+		if (ev->features[0] & 0x01)
+			set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 	}
 
 	if (conn->state != BT_CONFIG)
@@ -2962,7 +2966,7 @@ static inline void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff
 		conn->auth_type = hci_get_auth_req(conn);
 		cp.authentication = conn->auth_type;
 
-		if ((conn->out == 0x01 || conn->remote_oob == 0x01) &&
+		if ((conn->out || test_bit(HCI_CONN_REMOTE_OOB, &conn->flags)) &&
 				hci_find_remote_oob_data(hdev, &conn->dst))
 			cp.oob_data = 0x01;
 		else
@@ -2998,8 +3002,9 @@ static inline void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *s
 		goto unlock;
 
 	conn->remote_cap = ev->capability;
-	conn->remote_oob = ev->oob_data;
 	conn->remote_auth = ev->authentication;
+	if (ev->oob_data)
+		set_bit(HCI_CONN_REMOTE_OOB, &conn->flags);
 
 unlock:
 	hci_dev_unlock(hdev);
-- 
1.7.8.3

[PATCH 2/3] Bluetooth Convert hdev->ssp_mode to a flag

[johan.hedberg]

From: Johan Hedberg <johan.hedberg@intel.com>

The ssp_mode is essentially just a boolean so it's more appropriate to
have it simply as a flag in hdev->dev_flags.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
 include/net/bluetooth/hci.h      |    1 +
 include/net/bluetooth/hci_core.h |    1 -
 net/bluetooth/hci_conn.c         |    6 +++---
 net/bluetooth/hci_event.c        |   17 ++++++++++++-----
 net/bluetooth/mgmt.c             |    4 ++--
 5 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index dd2cc6c..cb9097a 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -94,6 +94,7 @@ enum {
 	HCI_DEBUG_KEYS,
 
 	HCI_LE_SCAN,
+	HCI_SSP_ENABLED,
 };
 
 /* HCI ioctl defines */
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 7a03311..94ba869 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -144,7 +144,6 @@ struct hci_dev {
 	__u8		features[8];
 	__u8		host_features[8];
 	__u8		commands[64];
-	__u8		ssp_mode;
 	__u8		hci_ver;
 	__u16		hci_rev;
 	__u8		lmp_ver;
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 8288e30..6ec259e 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -609,8 +609,8 @@ int hci_conn_check_link_mode(struct hci_conn *conn)
 	BT_DBG("conn %p", conn);
 
 	if (test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) &&
-					conn->hdev->ssp_mode > 0 &&
-					!(conn->link_mode & HCI_LM_ENCRYPT))
+			test_bit(HCI_SSP_ENABLED, &conn->hdev->dev_flags) &&
+			!(conn->link_mode & HCI_LM_ENCRYPT))
 		return 0;
 
 	return 1;
@@ -674,7 +674,7 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
 	   key. */
 	if (sec_level == BT_SECURITY_LOW &&
 			(!test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) ||
-							!conn->hdev->ssp_mode))
+			!test_bit(HCI_SSP_ENABLED, &conn->hdev->dev_flags)))
 		return 1;
 
 	/* For other security levels we need the link key. */
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index cbb0fa2..3163d18 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -429,7 +429,10 @@ static void hci_cc_read_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
 	if (rp->status)
 		return;
 
-	hdev->ssp_mode = rp->mode;
+	if (rp->mode)
+		set_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
+	else
+		clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
 }
 
 static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
@@ -446,7 +449,10 @@ static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
 	if (!sent)
 		return;
 
-	hdev->ssp_mode = *((__u8 *) sent);
+	if (*((u8 *) sent))
+		set_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
+	else
+		clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags);
 }
 
 static u8 hci_get_inquiry_mode(struct hci_dev *hdev)
@@ -1264,7 +1270,7 @@ static int hci_outgoing_auth_needed(struct hci_dev *hdev,
 
 	/* Only request authentication for SSP connections or non-SSP
 	 * devices with sec_level HIGH or if MITM protection is requested */
-	if (!(hdev->ssp_mode > 0 &&
+	if (!(test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 			test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)) &&
 				conn->pending_sec_level != BT_SECURITY_HIGH &&
 				!(conn->auth_type & 0x01))
@@ -1840,7 +1846,7 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 
 	if (!ev->status) {
 		if (!(test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) &&
-							hdev->ssp_mode > 0) &&
+				test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) &&
 				test_bit(HCI_CONN_REAUTH_PEND,	&conn->flags)) {
 			BT_INFO("re-auth of legacy device is not possible.");
 		} else {
@@ -1855,7 +1861,8 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 	clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
 
 	if (conn->state == BT_CONFIG) {
-		if (!ev->status && hdev->ssp_mode > 0 &&
+		if (!ev->status &&
+				test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 				test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)) {
 			struct hci_cp_set_conn_encrypt cp;
 			cp.handle  = ev->handle;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index ae9283d..8970799 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -297,7 +297,7 @@ static u32 get_current_settings(struct hci_dev *hdev)
 	if (test_bit(HCI_AUTH, &hdev->flags))
 		settings |= MGMT_SETTING_LINK_SECURITY;
 
-	if (hdev->ssp_mode > 0)
+	if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
 		settings |= MGMT_SETTING_SSP;
 
 	return settings;
@@ -416,7 +416,7 @@ static int update_eir(struct hci_dev *hdev)
 	if (!(hdev->features[6] & LMP_EXT_INQ))
 		return 0;
 
-	if (hdev->ssp_mode == 0)
+	if (!test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
 		return 0;
 
 	if (test_bit(HCI_SERVICE_CACHE, &hdev->dev_flags))
-- 
1.7.8.3

[PATCH 3/3] Bluetooth: Add a convenience function to check for SSP enabled

[johan.hedberg]

From: Johan Hedberg <johan.hedberg@intel.com>

It's a very common test to see if both the local and the remote device
have SSP enabled. By creating a simple function to test this we can
shorten many if-statements in the code.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
 include/net/bluetooth/hci_core.h |    7 +++++++
 net/bluetooth/hci_conn.c         |    8 ++------
 net/bluetooth/hci_event.c        |   12 ++++--------
 3 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 94ba869..25f449f 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -411,6 +411,13 @@ enum {
 	HCI_CONN_REMOTE_OOB,
 };
 
+static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
+{
+	struct hci_dev *hdev = conn->hdev;
+	return (test_bit(HCI_SSP_ENABLED, &hdev->flags) &&
+				test_bit(HCI_CONN_SSP_ENABLED, &conn->flags));
+}
+
 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 {
 	struct hci_conn_hash *h = &hdev->conn_hash;
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 6ec259e..eae7a53 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -608,9 +608,7 @@ int hci_conn_check_link_mode(struct hci_conn *conn)
 {
 	BT_DBG("conn %p", conn);
 
-	if (test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) &&
-			test_bit(HCI_SSP_ENABLED, &conn->hdev->dev_flags) &&
-			!(conn->link_mode & HCI_LM_ENCRYPT))
+	if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT))
 		return 0;
 
 	return 1;
@@ -672,9 +670,7 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
 
 	/* For non 2.1 devices and low security level we don't need the link
 	   key. */
-	if (sec_level == BT_SECURITY_LOW &&
-			(!test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) ||
-			!test_bit(HCI_SSP_ENABLED, &conn->hdev->dev_flags)))
+	if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn))
 		return 1;
 
 	/* For other security levels we need the link key. */
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3163d18..b24c663 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1270,8 +1270,7 @@ static int hci_outgoing_auth_needed(struct hci_dev *hdev,
 
 	/* Only request authentication for SSP connections or non-SSP
 	 * devices with sec_level HIGH or if MITM protection is requested */
-	if (!(test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
-			test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)) &&
+	if (!hci_conn_ssp_enabled(conn) &&
 				conn->pending_sec_level != BT_SECURITY_HIGH &&
 				!(conn->auth_type & 0x01))
 		return 0;
@@ -1845,9 +1844,8 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 		goto unlock;
 
 	if (!ev->status) {
-		if (!(test_bit(HCI_CONN_SSP_ENABLED, &conn->flags) &&
-				test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) &&
-				test_bit(HCI_CONN_REAUTH_PEND,	&conn->flags)) {
+		if (!hci_conn_ssp_enabled(conn) &&
+				test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
 			BT_INFO("re-auth of legacy device is not possible.");
 		} else {
 			conn->link_mode |= HCI_LM_AUTH;
@@ -1861,9 +1859,7 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 	clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
 
 	if (conn->state == BT_CONFIG) {
-		if (!ev->status &&
-				test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
-				test_bit(HCI_CONN_SSP_ENABLED, &conn->flags)) {
+		if (!ev->status && hci_conn_ssp_enabled(conn)) {
 			struct hci_cp_set_conn_encrypt cp;
 			cp.handle  = ev->handle;
 			cp.encrypt = 0x01;
-- 
1.7.8.3

Re: [PATCH 2/3] Bluetooth Convert hdev->ssp_mode to a flag

[Marcel Holtmann]

Hi Johan,

> The ssp_mode is essentially just a boolean so it's more appropriate to
> have it simply as a flag in hdev->dev_flags.
> 
> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
> ---
>  include/net/bluetooth/hci.h      |    1 +
>  include/net/bluetooth/hci_core.h |    1 -
>  net/bluetooth/hci_conn.c         |    6 +++---
>  net/bluetooth/hci_event.c        |   17 ++++++++++++-----
>  net/bluetooth/mgmt.c             |    4 ++--
>  5 files changed, 18 insertions(+), 11 deletions(-)

Acked-by: Marcel Holtmann <marcel@holtmann.org>

Regards

Marcel

Re: [PATCH 3/3] Bluetooth: Add a convenience function to check for SSP enabled

[Marcel Holtmann]

Hi Johan,

> It's a very common test to see if both the local and the remote device
> have SSP enabled. By creating a simple function to test this we can
> shorten many if-statements in the code.
> 
> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
> ---
>  include/net/bluetooth/hci_core.h |    7 +++++++
>  net/bluetooth/hci_conn.c         |    8 ++------
>  net/bluetooth/hci_event.c        |   12 ++++--------
>  3 files changed, 13 insertions(+), 14 deletions(-)

Acked-by: Marcel Holtmann <marcel@holtmann.org>

Regards

Marcel

Re: [PATCH 1/3] Bluetooth: Merge boolean members of struct hci_conn into flags

[Marcel Holtmann]

Hi Johan,

> Now that the flags member of struct hci_conn is supposed to accommodate
> any boolean type values we can easily merge all boolean members into it.
> 
> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
> ---
>  include/net/bluetooth/hci_core.h |    6 +++---
>  net/bluetooth/hci_conn.c         |   15 +++++++++------
>  net/bluetooth/hci_event.c        |   21 +++++++++++++--------
>  3 files changed, 25 insertions(+), 17 deletions(-)

Acked-by: Marcel Holtmann <marcel@holtmann.org>

Regards

Marcel

Re: [PATCH 1/3] Bluetooth: Merge boolean members of struct hci_conn into flags

[Anderson Lizardo]

Hi Johan,

Not sure if this is actually a bug, but mentioning anyway.

On Thu, Jan 19, 2012 at 5:42 AM,  <johan.hedberg@gmail.com> wrote:
> @@ -105,7 +105,8 @@ void hci_acl_connect(struct hci_conn *conn)
>                }
>
>                memcpy(conn->dev_class, ie->data.dev_class, 3);
> -               conn->ssp_mode = ie->data.ssp_mode;
> +               if (ie->data.ssp_mode > 0)
> +                       set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
>        }

Note that the code above is not semantically equivalent to the old
one. Given "conn" was not created on this function, the old code was
actually equivalent to:

if (ie->data.ssp_mode)
    conn->ssp_mode = 1;
else
    conn->ssp_mode = 0;

So I think you need set_bit/clear_bit branches here.

>
>        cp.pkt_type = cpu_to_le16(conn->pkt_type);
> [...]
> @@ -2780,7 +2783,8 @@ static inline void hci_remote_ext_features_evt(struct hci_dev *hdev, struct sk_b
>                if (ie)
>                        ie->data.ssp_mode = (ev->features[0] & 0x01);
>
> -               conn->ssp_mode = (ev->features[0] & 0x01);
> +               if (ev->features[0] & 0x01)
> +                       set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
>        }

Same here.

>
>        if (conn->state != BT_CONFIG)
> [...]
> @@ -2998,8 +3002,9 @@ static inline void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *s
>                goto unlock;
>
>        conn->remote_cap = ev->capability;
> -       conn->remote_oob = ev->oob_data;
>        conn->remote_auth = ev->authentication;
> +       if (ev->oob_data)
> +               set_bit(HCI_CONN_REMOTE_OOB, &conn->flags);

Same here.

>
>  unlock:
>        hci_dev_unlock(hdev);

Regards,
-- 
Anderson Lizardo
Instituto Nokia de Tecnologia - INdT
Manaus - Brazil