This patch moves reading of supported codecs from cache to a new
function to reuse over L2CAP sockets to be used in a2dp offload
use case.
Signed-off-by: Kiran K <kiran.k@xxxxxxxxx>
Change-Id: I080ed7ca8abd824d3af10859afd808bad28ee86d
---
net/bluetooth/hci_codec.c | 88 +++++++++++++++++++++++++++++++++++
net/bluetooth/hci_codec.h | 2 +
net/bluetooth/sco.c | 98 +++------------------------------------
3 files changed, 96 insertions(+), 92 deletions(-)
diff --git a/net/bluetooth/hci_codec.c b/net/bluetooth/hci_codec.c
index 38201532f58e..f4d8d3a253d8 100644
--- a/net/bluetooth/hci_codec.c
+++ b/net/bluetooth/hci_codec.c
@@ -250,3 +250,91 @@ void hci_read_supported_codecs_v2(struct hci_dev *hdev)
error:
kfree_skb(skb);
}
+
+int hci_get_supported_codecs(struct hci_dev *hdev, u8 type, char __user *optval,
+ int __user *optlen, int len)
+{
+ int n = 0, buf_len = 0, err = 0;
+ struct hci_codec_caps *caps;
+ struct bt_codec codec;
+ u8 num_codecs = 0, i, __user *ptr;
+ struct codec_list *c;
+
+ if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) {
+ err = -EOPNOTSUPP;
+ goto error;
+ }
+
+ if (!hdev->get_data_path_id) {
+ err = -EOPNOTSUPP;
+ goto error;
+ }
+
+ /* find total buffer size required to copy codec + capabilities */
+ hci_dev_lock(hdev);
+ list_for_each_entry(c, &hdev->local_codecs, list) {
+ if (c->transport != type)
+ 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) {
+ err = -ENOBUFS;
+ goto error;
+ }
+ ptr = optval;
+
+ if (put_user(num_codecs, ptr)) {
+ err = -EFAULT;
+ goto error;
+ }
+ ptr += sizeof(num_codecs);
+
+ /* Iterate over all the codecs on required transport */
+ hci_dev_lock(hdev);
+ list_for_each_entry(c, &hdev->local_codecs, list) {
+ if (c->transport != type)
+ 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 */
+ n = 0;
+ for (i = 0, caps = c->caps; i < c->num_caps; i++) {
+ n += 1 + caps->len;
+ caps = (void *)&caps->data[caps->len];
+ }
+
+ /* copy codec capabilities data */
+ if (n && copy_to_user(ptr, c->caps, n)) {
+ err = -EFAULT;
+ break;
+ }
+ ptr += n;
+ }
+ hci_dev_unlock(hdev);
+
+ if (!err && put_user(buf_len, optlen))
+ err = -EFAULT;
+
+error:
+ return err;
+}
diff --git a/net/bluetooth/hci_codec.h b/net/bluetooth/hci_codec.h
index a2751930f123..6e849c7d75b9 100644
--- a/net/bluetooth/hci_codec.h
+++ b/net/bluetooth/hci_codec.h
@@ -5,3 +5,5 @@
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);
+int hci_get_supported_codecs(struct hci_dev *hdev, u8 type, char __user *optval,
+ int __user *optlen, int len);
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 8eabf41b2993..0af814c13b5f 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -33,6 +33,8 @@
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/sco.h>
+#include "hci_codec.h"
+
static bool disable_esco;
static const struct proto_ops sco_sock_ops;
@@ -1032,12 +1034,7 @@ 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);
@@ -1103,98 +1100,15 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
break;
case BT_CODEC:
- num_codecs = 0;
- buf_len = 0;
-
- hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR);
+ 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);
+ err = hci_get_supported_codecs(hdev, HCI_TRANSPORT_SCO_ESCO,
+ optval, optlen, len);
hci_dev_put(hdev);
-
break;
default:
--
2.17.1
