Bluetooth: AMP: Write remote AMP Assoc
When receiving HCI Command Status after HCI Create Physical Link
execute HCI Write Remote AMP Assoc command to AMP controller.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index 657ec73..5895ad0 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -233,6 +233,86 @@
hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_ASSOC, sizeof(cp), &cp);
}
+
+/* Write AMP Assoc data fragments, returns true with last fragment written*/
+static bool amp_write_rem_assoc_frag(struct hci_dev *hdev,
+ struct hci_conn *hcon)
+{
+ struct hci_cp_write_remote_amp_assoc *cp;
+ struct amp_mgr *mgr = hcon->amp_mgr;
+ struct amp_ctrl *ctrl;
+ u16 frag_len, len;
+
+ ctrl = amp_ctrl_lookup(mgr, hcon->remote_id);
+ if (!ctrl)
+ return false;
+
+ if (!ctrl->assoc_rem_len) {
+ BT_DBG("all fragments are written");
+ ctrl->assoc_rem_len = ctrl->assoc_len;
+ ctrl->assoc_len_so_far = 0;
+
+ amp_ctrl_put(ctrl);
+ return true;
+ }
+
+ frag_len = min_t(u16, 248, ctrl->assoc_rem_len);
+ len = frag_len + sizeof(*cp);
+
+ cp = kzalloc(len, GFP_KERNEL);
+ if (!cp) {
+ amp_ctrl_put(ctrl);
+ return false;
+ }
+
+ BT_DBG("hcon %p ctrl %p frag_len %u assoc_len %u rem_len %u",
+ hcon, ctrl, frag_len, ctrl->assoc_len, ctrl->assoc_rem_len);
+
+ cp->phy_handle = hcon->handle;
+ cp->len_so_far = cpu_to_le16(ctrl->assoc_len_so_far);
+ cp->rem_len = cpu_to_le16(ctrl->assoc_rem_len);
+ memcpy(cp->frag, ctrl->assoc, frag_len);
+
+ ctrl->assoc_len_so_far += frag_len;
+ ctrl->assoc_rem_len -= frag_len;
+
+ amp_ctrl_put(ctrl);
+
+ hci_send_cmd(hdev, HCI_OP_WRITE_REMOTE_AMP_ASSOC, len, cp);
+
+ kfree(cp);
+
+ return false;
+}
+
+void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle)
+{
+ struct hci_conn *hcon;
+
+ BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle);
+
+ hcon = hci_conn_hash_lookup_handle(hdev, handle);
+ if (!hcon)
+ return;
+
+ amp_write_rem_assoc_frag(hdev, hcon);
+}
+
+void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle)
+{
+ struct hci_conn *hcon;
+
+ BT_DBG("%s phy handle 0x%2.2x", hdev->name, handle);
+
+ hcon = hci_conn_hash_lookup_handle(hdev, handle);
+ if (!hcon)
+ return;
+
+ BT_DBG("%s phy handle 0x%2.2x hcon %p", hdev->name, handle, hcon);
+
+ amp_write_rem_assoc_frag(hdev, hcon);
+}
+
void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr,
struct hci_conn *hcon)
{