| Message ID | 20210727084713.23038-2-kiran.k@intel.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v11,01/10] Bluetooth: Enumerate local supported codec and cache details | expand |
Hi Kiran, > 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@intel.com> > Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com> > Signed-off-by: Srivatsa Ravishankar <ravishankar.srivatsa@intel.com> > --- > * changes in v11: > - Remove Kconfig related changes > - Move codec related functions to hci_codec.c > > * changes in v10: > no changes > > * changes in v9: > use vnd as shortcut name for vendor instead of ven > > * changes in v8: > no changes > > * 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 | 29 +++++++++++++++ > net/bluetooth/hci_codec.c | 74 +++++++++++++++++++++++++++++++++++++ > net/bluetooth/hci_codec.h | 1 + > net/bluetooth/hci_core.c | 4 +- > 4 files changed, 107 insertions(+), 1 deletion(-) > > diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h > index f76849c8eafd..b4e35cf5f4b1 100644 > --- a/include/net/bluetooth/hci.h > +++ b/include/net/bluetooth/hci.h > @@ -1337,6 +1337,35 @@ struct hci_rp_read_local_pairing_opts { > __u8 max_key_size; > } __packed; > > +#define HCI_OP_READ_LOCAL_CODECS_V2 0x100d > +struct hci_std_codec_v2 { > + __u8 id; > + __u8 transport; > +} __packed; > + > +struct hci_std_codecs_v2 { > + __u8 num; > + struct hci_std_codec_v2 codec[]; > +} __packed; > + > +struct hci_vnd_codec_v2 { > + __u8 id; > + __le16 cid; > + __le16 vid; > + __u8 transport; > +} __packed; > + > +struct hci_vnd_codecs_v2 { > + __u8 num; > + struct hci_vnd_codec_v2 codec[]; > +} __packed; > + > +struct hci_rp_read_local_supported_codecs_v2 { > + __u8 status; > + struct hci_std_codecs_v2 std_codecs; > + struct hci_vnd_codecs_v2 vendor_codecs; > +} __packed; > + > #define HCI_OP_READ_LOCAL_CODEC_CAPS 0x100e > struct hci_op_read_local_codec_caps { > __u8 id; > diff --git a/net/bluetooth/hci_codec.c b/net/bluetooth/hci_codec.c > index 205f3b04c172..6f20a4b1fc9c 100644 > --- a/net/bluetooth/hci_codec.c > +++ b/net/bluetooth/hci_codec.c > @@ -192,3 +192,77 @@ void hci_read_supported_codecs(struct hci_dev *hdev) > error: > kfree_skb(skb); > } > + > +static void hci_codec_list_parse_v2(struct hci_dev *hdev, __u8 num_codecs, > + void *codec_list, bool is_vnd_codec) > +{ > + __u8 i; > + > + for (i = 0; i < num_codecs; i++) { > + if (!is_vnd_codec) { > + struct hci_std_codecs_v2 *codecs = codec_list; > + > + hci_read_codec_capabilities(hdev, &codecs->codec[i], > + codecs->codec[i].transport, > + is_vnd_codec); > + } else { > + struct hci_vnd_codecs_v2 *codecs = codec_list; > + > + hci_read_codec_capabilities(hdev, &codecs->codec[i], > + codecs->codec[i].transport, > + is_vnd_codec); > + } > + } > +} > + > +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_std_codecs_v2 *std_codecs; > + struct hci_vnd_codecs_v2 *vnd_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; > + > + /* check for payload data length before accessing */ > + 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)); > + > + vnd_codecs = (void *)skb->data; > + > + /* check for payload data length before accessing */ > + if (skb->len < > + flex_array_size(vnd_codecs, codec, vnd_codecs->num) > + + sizeof(vnd_codecs->num)) > + goto error; > + > + hci_codec_list_parse_v2(hdev, vnd_codecs->num, vnd_codecs, true); > + > +error: > + kfree_skb(skb); > +} once you apply my comments from the previous patch to this one as well, you will see that it looks a lot less complicated and entangled. Regards Marcel
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index f76849c8eafd..b4e35cf5f4b1 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -1337,6 +1337,35 @@ struct hci_rp_read_local_pairing_opts { __u8 max_key_size; } __packed; +#define HCI_OP_READ_LOCAL_CODECS_V2 0x100d +struct hci_std_codec_v2 { + __u8 id; + __u8 transport; +} __packed; + +struct hci_std_codecs_v2 { + __u8 num; + struct hci_std_codec_v2 codec[]; +} __packed; + +struct hci_vnd_codec_v2 { + __u8 id; + __le16 cid; + __le16 vid; + __u8 transport; +} __packed; + +struct hci_vnd_codecs_v2 { + __u8 num; + struct hci_vnd_codec_v2 codec[]; +} __packed; + +struct hci_rp_read_local_supported_codecs_v2 { + __u8 status; + struct hci_std_codecs_v2 std_codecs; + struct hci_vnd_codecs_v2 vendor_codecs; +} __packed; + #define HCI_OP_READ_LOCAL_CODEC_CAPS 0x100e struct hci_op_read_local_codec_caps { __u8 id; diff --git a/net/bluetooth/hci_codec.c b/net/bluetooth/hci_codec.c index 205f3b04c172..6f20a4b1fc9c 100644 --- a/net/bluetooth/hci_codec.c +++ b/net/bluetooth/hci_codec.c @@ -192,3 +192,77 @@ void hci_read_supported_codecs(struct hci_dev *hdev) error: kfree_skb(skb); } + +static void hci_codec_list_parse_v2(struct hci_dev *hdev, __u8 num_codecs, + void *codec_list, bool is_vnd_codec) +{ + __u8 i; + + for (i = 0; i < num_codecs; i++) { + if (!is_vnd_codec) { + struct hci_std_codecs_v2 *codecs = codec_list; + + hci_read_codec_capabilities(hdev, &codecs->codec[i], + codecs->codec[i].transport, + is_vnd_codec); + } else { + struct hci_vnd_codecs_v2 *codecs = codec_list; + + hci_read_codec_capabilities(hdev, &codecs->codec[i], + codecs->codec[i].transport, + is_vnd_codec); + } + } +} + +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_std_codecs_v2 *std_codecs; + struct hci_vnd_codecs_v2 *vnd_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; + + /* check for payload data length before accessing */ + 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)); + + vnd_codecs = (void *)skb->data; + + /* check for payload data length before accessing */ + if (skb->len < + flex_array_size(vnd_codecs, codec, vnd_codecs->num) + + sizeof(vnd_codecs->num)) + goto error; + + hci_codec_list_parse_v2(hdev, vnd_codecs->num, vnd_codecs, true); + +error: + kfree_skb(skb); +} diff --git a/net/bluetooth/hci_codec.h b/net/bluetooth/hci_codec.h index e5e594933d07..899e5dda801f 100644 --- a/net/bluetooth/hci_codec.h +++ b/net/bluetooth/hci_codec.h @@ -3,4 +3,5 @@ /* Copyright (C) 2021 Intel Corporation */ void hci_read_supported_codecs(struct hci_dev *hdev); +void hci_read_supported_codecs_v2(struct hci_dev *hdev); void hci_codec_list_clear(struct list_head *codec_list); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 212d5066d413..513eae743d2f 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -935,7 +935,9 @@ 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