--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+
+/* Copyright (C) 2021 Intel Corporation */
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include "hci_codec.h"
+
+static int hci_codec_list_add(struct list_head *list,
+ struct hci_op_read_local_codec_caps *sent,
+ struct hci_rp_read_local_codec_caps *rp,
+ void *caps,
+ __u32 len)
+{
+ struct codec_list *entry;
+
+ entry = kzalloc(sizeof(*entry) + len, GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ entry->id = sent->id;
+ if (sent->id == 0xFF) {
+ entry->cid = __le16_to_cpu(sent->cid);
+ entry->vid = __le16_to_cpu(sent->vid);
+ }
+ entry->transport = sent->transport;
+ entry->len = len;
+ entry->num_caps = rp->num_caps;
+ if (rp->num_caps)
+ memcpy(entry->caps, caps, len);
+ list_add(&entry->list, list);
+
+ return 0;
+}
+
+void hci_codec_list_clear(struct list_head *codec_list)
+{
+ struct codec_list *c, *n;
+
+ list_for_each_entry_safe(c, n, codec_list, list) {
+ list_del(&c->list);
+ kfree(c);
+ }
+}
+
+static void hci_read_codec_capabilities(struct hci_dev *hdev, __u8 transport,
+ struct hci_op_read_local_codec_caps
+ *cmd)
+{
+ __u8 i;
+
+ for (i = 0; i < TRANSPORT_TYPE_MAX; i++) {
+ if (transport & BIT(i)) {
+ struct hci_rp_read_local_codec_caps *rp;
+ struct hci_codec_caps *caps;
+ struct sk_buff *skb;
+ __u8 j;
+ __u32 len;
+
+ cmd->transport = i;
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_CODEC_CAPS,
+ sizeof(*cmd), cmd,
+ HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Failed to read codec capabilities (%ld)",
+ PTR_ERR(skb));
+ continue;
+ }
+
+ if (skb->len < sizeof(*rp))
+ goto error;
+
+ rp = (void *)skb->data;
+
+ if (rp->status)
+ goto error;
+
+ if (!rp->num_caps) {
+ len = 0;
+ /* this codec doesn't have capabilities */
+ goto skip_caps_parse;
+ }
+
+ skb_pull(skb, sizeof(*rp));
+
+ for (j = 0, len = 0; j < rp->num_caps; j++) {
+ caps = (void *)skb->data;
+ if (skb->len < sizeof(*caps))
+ goto error;
+ if (skb->len < caps->len)
+ goto error;
+ len += sizeof(caps->len) + caps->len;
+ skb_pull(skb, sizeof(caps->len) + caps->len);
+ }
+
+skip_caps_parse:
+ hci_dev_lock(hdev);
+ hci_codec_list_add(&hdev->local_codecs, cmd, rp,
+ (__u8 *)rp + sizeof(*rp), len);
+ hci_dev_unlock(hdev);
+error:
+ kfree_skb(skb);
+ }
+ }
+}
+
+void hci_read_supported_codecs(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct hci_rp_read_local_supported_codecs *rp;
+ struct hci_std_codecs *std_codecs;
+ struct hci_vnd_codecs *vnd_codecs;
+ struct hci_op_read_local_codec_caps caps;
+ __u8 i;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_CODECS, 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;
+
+ /* validate codecs length before accessing */
+ if (skb->len < flex_array_size(std_codecs, codec, std_codecs->num)
+ + sizeof(std_codecs->num))
+ goto error;
+
+ /* enumerate codec capabilities of standard codecs */
+ memset(&caps, 0, sizeof(caps));
+ for (i = 0; i < std_codecs->num; i++) {
+ caps.id = std_codecs->codec[i];
+ caps.direction = 0x00;
+ hci_read_codec_capabilities(hdev, LOCAL_CODEC_ACL_MASK, &caps);
+ }
+
+ skb_pull(skb, flex_array_size(std_codecs, codec, std_codecs->num)
+ + sizeof(std_codecs->num));
+
+ vnd_codecs = (void *)skb->data;
+
+ /* validate vendor codecs length before accessing */
+ if (skb->len <
+ flex_array_size(vnd_codecs, codec, vnd_codecs->num)
+ + sizeof(vnd_codecs->num))
+ goto error;
+
+ /* enumerate vendor codec capabilities */
+ for (i = 0; i < vnd_codecs->num; i++) {
+ caps.id = 0xFF;
+ caps.cid = vnd_codecs->codec[i].cid;
+ caps.vid = vnd_codecs->codec[i].vid;
+ caps.direction = 0x00;
+ hci_read_codec_capabilities(hdev, LOCAL_CODEC_ACL_MASK, &caps);
+ }
+
+error:
+ kfree_skb(skb);
+}
#include "leds.h"
#include "msft.h"
#include "aosp.h"
+#include "hci_codec.h"
static void hci_rx_work(struct work_struct *work);
static void hci_cmd_work(struct work_struct *work);
if (hdev->commands[22] & 0x04)
hci_set_event_mask_page_2(req);
- /* Read local codec list if the HCI command is supported */
- if (hdev->commands[29] & 0x20)
- hci_req_add(req, HCI_OP_READ_LOCAL_CODECS, 0, NULL);
-
/* Read local pairing options if the HCI command is supported */
if (hdev->commands[41] & 0x08)
hci_req_add(req, HCI_OP_READ_LOCAL_PAIRING_OPTS, 0, NULL);
if (err < 0)
return err;
+ /* Read local codec list if the HCI command is supported */
+ if (hdev->commands[29] & 0x20)
+ hci_read_supported_codecs(hdev);
+
/* This function is only called when the controller is actually in
* configured state. When the controller is marked as unconfigured,
* this initialization procedure is not run.
memset(hdev->eir, 0, sizeof(hdev->eir));
memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
bacpy(&hdev->random_addr, BDADDR_ANY);
+ hci_codec_list_clear(&hdev->local_codecs);
hci_req_sync_unlock(hdev);
INIT_LIST_HEAD(&hdev->adv_instances);
INIT_LIST_HEAD(&hdev->blocked_keys);
+ INIT_LIST_HEAD(&hdev->local_codecs);
INIT_WORK(&hdev->rx_work, hci_rx_work);
INIT_WORK(&hdev->cmd_work, hci_cmd_work);
INIT_WORK(&hdev->tx_work, hci_tx_work);
projects / linux-2.6-block.git / commitdiff