[PATCH] [32-bit UUID Support] Added support for 32-bit uuid for the Attribute type in ATT and GATT for GATT Client devices as per BT core 4.1 spec. BT core spec 4.0 supports only 16-bit and 128-bit uuids. This patch provides the code changes for 32-bit uuid for GATT client role.

[Sudha Bheemanna <b.sudha@xxxxxxxxxxx>]

---
 attrib/att.c  |   12 ++++++++++++
 attrib/gatt.c |   11 +++++++++++
 2 files changed, 23 insertions(+)

diff --git a/attrib/att.c b/attrib/att.c
index 8e9c06d..2225255 100644
--- a/attrib/att.c
+++ b/attrib/att.c
@@ -42,6 +42,8 @@ static inline void put_uuid_le(const bt_uuid_t *src, void *dst)
 {
 	if (src->type == BT_UUID16)
 		put_le16(src->value.u16, dst);
+	else if (src->type == BT_UUID32)
+		put_le32(src->value.u32, dst);
 	else
 		/* Convert from 128-bit BE to LE */
 		bswap_128(&src->value.u128, dst);
@@ -134,6 +136,8 @@ static void get_uuid(uint8_t type, const void *val, bt_uuid_t *uuid)
 {
 	if (type == BT_UUID16)
 		bt_uuid16_create(uuid, get_le16(val));
+	else if (type == BT_UUID32)
+		bt_uuid32_create(uuid, get_le32(val));
 	else {
 		uint128_t u128;
 
@@ -153,6 +157,8 @@ uint16_t enc_read_by_grp_req(uint16_t start, uint16_t end, bt_uuid_t *uuid,
 
 	if (uuid->type == BT_UUID16)
 		uuid_len = 2;
+	else if (uuid->type == BT_UUID32)
+		uuid_len = 4;
 	else if (uuid->type == BT_UUID128)
 		uuid_len = 16;
 	else
@@ -187,6 +193,8 @@ uint16_t dec_read_by_grp_req(const uint8_t *pdu, size_t len, uint16_t *start,
 
 	if (len == (min_len + 2))
 		type = BT_UUID16;
+	else if (len == (min_len + 4))
+		type = BT_UUID32;
 	else if (len == (min_len + 16))
 		type = BT_UUID128;
 	else
@@ -398,6 +406,8 @@ uint16_t enc_read_by_type_req(uint16_t start, uint16_t end, bt_uuid_t *uuid,
 
 	if (uuid->type == BT_UUID16)
 		uuid_len = 2;
+	else if (uuid->type == BT_UUID32)
+		uuid_len = 4;
 	else if (uuid->type == BT_UUID128)
 		uuid_len = 16;
 	else
@@ -429,6 +439,8 @@ uint16_t dec_read_by_type_req(const uint8_t *pdu, size_t len, uint16_t *start,
 
 	if (len == (min_len + 2))
 		type = BT_UUID16;
+	if (len == (min_len + 4))
+		type = BT_UUID32;
 	else if (len == (min_len + 16))
 		type = BT_UUID128;
 	else
diff --git a/attrib/gatt.c b/attrib/gatt.c
index 49cd1a3..bb2330a 100644
--- a/attrib/gatt.c
+++ b/attrib/gatt.c
@@ -143,6 +143,8 @@ static void put_uuid_le(const bt_uuid_t *uuid, void *dst)
 {
 	if (uuid->type == BT_UUID16)
 		put_le16(uuid->value.u16, dst);
+	else if (uuid->type == BT_UUID32)
+		put_le32(uuid->value.u32, dst);
 	else
 		/* Convert from 128-bit BE to LE */
 		bswap_128(&uuid->value.u128, dst);
@@ -155,6 +157,11 @@ static void get_uuid128(uint8_t type, const void *val, bt_uuid_t *uuid)
 
 		bt_uuid16_create(&uuid16, get_le16(val));
 		bt_uuid_to_uuid128(&uuid16, uuid);
+	} else if (type == BT_UUID32) {
+		bt_uuid_t uuid32;
+
+		bt_uuid32_create(&uuid32, get_le32(val));
+		bt_uuid_to_uuid128(&uuid32, uuid);
 	} else {
 		uint128_t u128;
 
@@ -256,6 +263,8 @@ static void primary_all_cb(guint8 status, const guint8 *ipdu, guint16 iplen,
 
 	if (list->len == 6)
 		type = BT_UUID16;
+	else if (list->len == 8)
+		type = BT_UUID32;
 	else if (list->len == 20)
 		type = BT_UUID128;
 	else {
@@ -519,6 +528,8 @@ static void char_discovered_cb(guint8 status, const guint8 *ipdu, guint16 iplen,
 
 	if (list->len == 7)
 		type = BT_UUID16;
+	else if (list->len == 9)
+		type = BT_UUID32;
 	else
 		type = BT_UUID128;
 
-- 
1.7.9.5

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