Bluetooth: A2MP: Process A2MP Get AMP Assoc Rsp

When receiving A2MP Get AMP Assoc Response save assoc data to remote
AMP controller list and prepare for creating physical link.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

1 files changed, 59 insertions, 1 deletions

diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
index 594df9643365..d0fde05e8b17 100644
--- a/net/bluetooth/a2mp.c
+++ b/net/bluetooth/a2mp.c
@@ -343,6 +343,61 @@ done:
         return 0;
 }
 
+static int a2mp_getampassoc_rsp(struct amp_mgr *mgr, struct sk_buff *skb,
+                                struct a2mp_cmd *hdr)
+{
+        struct a2mp_amp_assoc_rsp *rsp = (void *) skb->data;
+        u16 len = le16_to_cpu(hdr->len);
+        struct hci_dev *hdev;
+        struct amp_ctrl *ctrl;
+        struct hci_conn *hcon;
+
+        if (len < sizeof(*rsp))
+                return -EINVAL;
+
+        BT_DBG("id %d status 0x%2.2x assoc len %u", rsp->id, rsp->status,
+               len - sizeof(*rsp));
+
+        if (rsp->status)
+                return -EINVAL;
+
+        /* Save remote ASSOC data */
+        ctrl = amp_ctrl_lookup(mgr, rsp->id);
+        if (ctrl) {
+                u8 *assoc, assoc_len = len - sizeof(*rsp);
+
+                assoc = kzalloc(assoc_len, GFP_KERNEL);
+                if (!assoc) {
+                        amp_ctrl_put(ctrl);
+                        return -ENOMEM;
+                }
+
+                memcpy(assoc, rsp->amp_assoc, assoc_len);
+                ctrl->assoc = assoc;
+                ctrl->assoc_len = assoc_len;
+                ctrl->assoc_rem_len = assoc_len;
+                ctrl->assoc_len_so_far = 0;
+
+                amp_ctrl_put(ctrl);
+        }
+
+        /* Create Phys Link */
+        hdev = hci_dev_get(rsp->id);
+        if (!hdev)
+                return -EINVAL;
+
+        hcon = phylink_add(hdev, mgr, rsp->id);
+        if (!hcon)
+                goto done;
+
+        BT_DBG("Created hcon %p: loc:%d -> rem:%d", hcon, hdev->id, rsp->id);
+
+done:
+        hci_dev_put(hdev);
+        skb_pull(skb, len);
+        return 0;
+}
+
 static int a2mp_createphyslink_req(struct amp_mgr *mgr, struct sk_buff *skb,
                                    struct a2mp_cmd *hdr)
 {
@@ -502,8 +557,11 @@ static int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
                         err = a2mp_getinfo_rsp(mgr, skb, hdr);
                         break;
 
-                case A2MP_CHANGE_RSP:
                 case A2MP_GETAMPASSOC_RSP:
+                        err = a2mp_getampassoc_rsp(mgr, skb, hdr);
+                        break;
+
+                case A2MP_CHANGE_RSP:
                 case A2MP_CREATEPHYSLINK_RSP:
                 case A2MP_DISCONNPHYSLINK_RSP:
                         err = a2mp_cmd_rsp(mgr, skb, hdr);