Use V2 version of read local supported command is controller
supports
snoop:
> HCI Event: Command Complete (0x0e) plen 20
Read Local Supported Codecs V2 (0x04|0x000d) ncmd 1
Status: Success (0x00)
Number of supported codecs: 7
Codec: u-law log (0x00)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: A-law log (0x01)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: CVSD (0x02)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: Transparent (0x03)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: Linear PCM (0x04)
Logical Transport Type: 0x02
Codec supported over BR/EDR SCO and eSCO
Codec: Reserved (0x08)
Logical Transport Type: 0x03
Codec supported over BR/EDR ACL
Codec supported over BR/EDR SCO and eSCO
Codec: mSBC (0x05)
Logical Transport Type: 0x03
Codec supported over BR/EDR ACL
Codec supported over BR/EDR SCO and eSCO
Number of vendor codecs: 0
......
< HCI Command: Read Local Suppor.. (0x04|0x000e) plen 7
Codec: mSBC (0x05)
Logical Transport Type: 0x00
Direction: Input (Host to Controller) (0x00)
> HCI Event: Command Complete (0x0e) plen 12
Read Local Supported Codec Capabilities (0x04|0x000e) ncmd 1
Status: Success (0x00)
Number of codec capabilities: 1
Capabilities #0:
00 00 11 15 02 33
Signed-off-by: Kiran K <kiran.k@xxxxxxxxx>
Signed-off-by: Chethan T N <chethan.tumkur.narayan@xxxxxxxxx>
Signed-off-by: Srivatsa Ravishankar <ravishankar.srivatsa@xxxxxxxxx>
---
* changes in v7:
call codec enumeration code in hci_init instead of having it in a separate
function
* changes in v6
no changes
* changes in v5:
fix review comments
* changes in v4:
converts codec read capabilities calls from async to sync
* changes in v3:
No changes
* changes in v2:
add length check for event data before accessing
include/net/bluetooth/hci.h | 28 ++++++++++++++
net/bluetooth/hci_core.c | 76 ++++++++++++++++++++++++++++++++++++-
2 files changed, 103 insertions(+), 1 deletion(-)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 901603e8b4ed..b36ac8512a11 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -1335,6 +1335,34 @@ struct hci_rp_read_local_pairing_opts {
__u8 max_key_size;
} __packed;
+#define HCI_OP_READ_LOCAL_CODECS_V2 0x100d
+struct hci_standard_codec_v2 {
+ __u8 codec_id;
+ __u8 transport;
+} __packed;
+
+struct hci_standard_codecs_v2 {
+ __u8 num;
+ struct hci_standard_codec_v2 codec[];
+} __packed;
+
+struct hci_vendor_codec_v2 {
+ __le16 company_id;
+ __le16 vendor_id;
+ __u8 transport;
+} __packed;
+
+struct hci_vendor_codecs_v2 {
+ __u8 num;
+ struct hci_vendor_codec_v2 codec[];
+} __packed;
+
+struct hci_rp_read_local_supported_codecs_v2 {
+ __u8 status;
+ struct hci_standard_codecs_v2 std_codecs;
+ struct hci_vendor_codecs_v2 vendor_codecs;
+} __packed;
+
#define HCI_OP_READ_LOCAL_CODEC_CAPS 0x100e
struct hci_op_read_local_codec_caps {
__u8 codec_id[5];
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 50947a1ed6a9..debb9f871479 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1006,6 +1006,28 @@ static void hci_codec_list_parse(struct hci_dev *hdev, __u8 num_codecs,
}
}
+static void hci_codec_list_parse_v2(struct hci_dev *hdev, __u8 num_codecs,
+ void *codec_list, bool is_vendor_codec)
+{
+ __u8 i;
+
+ for (i = 0; i < num_codecs; i++) {
+ if (!is_vendor_codec) {
+ struct hci_standard_codecs_v2 *codecs = codec_list;
+
+ hci_read_codec_capabilities(hdev, &codecs->codec[i],
+ codecs->codec[i].transport,
+ is_vendor_codec);
+ } else {
+ struct hci_vendor_codecs_v2 *codecs = codec_list;
+
+ hci_read_codec_capabilities(hdev, &codecs->codec[i],
+ codecs->codec[i].transport,
+ is_vendor_codec);
+ }
+ }
+}
+
static void hci_read_supported_codecs(struct hci_dev *hdev)
{
struct sk_buff *skb;
@@ -1056,6 +1078,56 @@ static void hci_read_supported_codecs(struct hci_dev *hdev)
kfree_skb(skb);
}
+static void hci_read_supported_codecs_v2(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct hci_rp_read_local_supported_codecs_v2 *rp;
+ struct hci_standard_codecs_v2 *std_codecs;
+ struct hci_vendor_codecs_v2 *vendor_codecs;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_CODECS_V2, 0, NULL,
+ HCI_CMD_TIMEOUT);
+
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Failed to read local supported codecs (%ld)",
+ PTR_ERR(skb));
+ return;
+ }
+
+ if (skb->len < sizeof(*rp))
+ goto error;
+
+ rp = (void *)skb->data;
+
+ if (rp->status)
+ goto error;
+
+ skb_pull(skb, sizeof(rp->status));
+
+ std_codecs = (void *)skb->data;
+
+ if (skb->len < flex_array_size(std_codecs, codec, std_codecs->num)
+ + sizeof(std_codecs->num))
+ goto error;
+
+ hci_codec_list_parse_v2(hdev, std_codecs->num, std_codecs, false);
+
+ skb_pull(skb, flex_array_size(std_codecs, codec, std_codecs->num)
+ + sizeof(std_codecs->num));
+
+ vendor_codecs = (void *)skb->data;
+
+ if (skb->len <
+ flex_array_size(vendor_codecs, codec, vendor_codecs->num)
+ + sizeof(vendor_codecs->num))
+ goto error;
+
+ hci_codec_list_parse_v2(hdev, vendor_codecs->num, vendor_codecs, true);
+
+error:
+ kfree_skb(skb);
+}
+
static int __hci_init(struct hci_dev *hdev)
{
int err;
@@ -1087,7 +1159,9 @@ static int __hci_init(struct hci_dev *hdev)
return err;
/* Read local codec list if the HCI command is supported */
- if (hdev->commands[29] & 0x20)
+ if (hdev->commands[45] & 0x04)
+ hci_read_supported_codecs_v2(hdev);
+ else if (hdev->commands[29] & 0x20)
hci_read_supported_codecs(hdev);
/* This function is only called when the controller is actually in
--
2.17.1
