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authorKiran K <kiran.k@intel.com>2021-09-07 15:42:40 +0530
committerLuiz Augusto von Dentz <luiz.von.dentz@intel.com>2021-09-07 14:09:18 -0700
commit248733e87d503e75624a2e95e241f51334fdd320 (patch)
tree5f1a33e9515ab87e292fd63c16d75e7052f87076 /net
parenta358ef86da458a12e28edacfff5b7f145f888a93 (diff)
Bluetooth: Allow querying of supported offload codecs over SCO socket
Add BT_CODEC option for getsockopt systemcall to get the details of offload codecs supported over SCO socket Signed-off-by: Kiran K <kiran.k@intel.com> Reviewed-by: Chethan T N <chethan.tumkur.narayan@intel.com> Reviewed-by: Srivatsa Ravishankar <ravishankar.srivatsa@intel.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/sco.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 6e047e178c0a..df8cba0c9cc4 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -972,6 +972,12 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
struct bt_voice voice;
u32 phys;
int pkt_status;
+ int buf_len;
+ struct codec_list *c;
+ u8 num_codecs, i, __user *ptr;
+ struct hci_dev *hdev;
+ struct hci_codec_caps *caps;
+ struct bt_codec codec;
BT_DBG("sk %p", sk);
@@ -1036,6 +1042,101 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
err = -EFAULT;
break;
+ case BT_CODEC:
+ num_codecs = 0;
+ buf_len = 0;
+
+ hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR);
+ if (!hdev) {
+ err = -EBADFD;
+ break;
+ }
+
+ if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) {
+ hci_dev_put(hdev);
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ if (!hdev->get_data_path_id) {
+ hci_dev_put(hdev);
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ /* find total buffer size required to copy codec + caps */
+ hci_dev_lock(hdev);
+ list_for_each_entry(c, &hdev->local_codecs, list) {
+ if (c->transport != HCI_TRANSPORT_SCO_ESCO)
+ continue;
+ num_codecs++;
+ for (i = 0, caps = c->caps; i < c->num_caps; i++) {
+ buf_len += 1 + caps->len;
+ caps = (void *)&caps->data[caps->len];
+ }
+ buf_len += sizeof(struct bt_codec);
+ }
+ hci_dev_unlock(hdev);
+
+ buf_len += sizeof(struct bt_codecs);
+ if (buf_len > len) {
+ hci_dev_put(hdev);
+ err = -ENOBUFS;
+ break;
+ }
+ ptr = optval;
+
+ if (put_user(num_codecs, ptr)) {
+ hci_dev_put(hdev);
+ err = -EFAULT;
+ break;
+ }
+ ptr += sizeof(num_codecs);
+
+ /* Iterate all the codecs supported over SCO and populate
+ * codec data
+ */
+ hci_dev_lock(hdev);
+ list_for_each_entry(c, &hdev->local_codecs, list) {
+ if (c->transport != HCI_TRANSPORT_SCO_ESCO)
+ continue;
+
+ codec.id = c->id;
+ codec.cid = c->cid;
+ codec.vid = c->vid;
+ err = hdev->get_data_path_id(hdev, &codec.data_path);
+ if (err < 0)
+ break;
+ codec.num_caps = c->num_caps;
+ if (copy_to_user(ptr, &codec, sizeof(codec))) {
+ err = -EFAULT;
+ break;
+ }
+ ptr += sizeof(codec);
+
+ /* find codec capabilities data length */
+ len = 0;
+ for (i = 0, caps = c->caps; i < c->num_caps; i++) {
+ len += 1 + caps->len;
+ caps = (void *)&caps->data[caps->len];
+ }
+
+ /* copy codec capabilities data */
+ if (len && copy_to_user(ptr, c->caps, len)) {
+ err = -EFAULT;
+ break;
+ }
+ ptr += len;
+ }
+
+ if (!err && put_user(buf_len, optlen))
+ err = -EFAULT;
+
+ hci_dev_unlock(hdev);
+ hci_dev_put(hdev);
+
+ break;
+
default:
err = -ENOPROTOOPT;
break;