int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
u8 pipe)
{
bool pipe_created = false;
int r;
pr_debug("\n");
if (hdev->gate2pipe[dest_gate] == NFC_HCI_DO_NOT_CREATE_PIPE)
return 0;
if (hdev->gate2pipe[dest_gate] != NFC_HCI_INVALID_PIPE)
return -EADDRINUSE;
if (pipe != NFC_HCI_INVALID_PIPE)
goto open_pipe;
switch (dest_gate) {
case NFC_HCI_LINK_MGMT_GATE:
pipe = NFC_HCI_LINK_MGMT_PIPE;
break;
case NFC_HCI_ADMIN_GATE:
pipe = NFC_HCI_ADMIN_PIPE;
break;
default:
pipe = nfc_hci_create_pipe(hdev, dest_host, dest_gate, &r);
if (pipe == NFC_HCI_INVALID_PIPE)
return r;
pipe_created = true;
break;
}
open_pipe:
r = nfc_hci_open_pipe(hdev, pipe);
if (r < 0) {
if (pipe_created)
if (nfc_hci_delete_pipe(hdev, pipe) < 0) {
/* TODO: Cannot clean by deleting pipe...
* -> inconsistent state */
}
return r;
}
hdev->gate2pipe[dest_gate] = pipe;
return 0;
}
int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate)
{
int r;
u8 pipe = hdev->gate2pipe[gate];
pr_debug("\n");
if (pipe == NFC_HCI_INVALID_PIPE)
return -EADDRNOTAVAIL;
r = nfc_hci_close_pipe(hdev, pipe);
if (r < 0)
return r;
if (pipe != NFC_HCI_LINK_MGMT_PIPE && pipe != NFC_HCI_ADMIN_PIPE) {
r = nfc_hci_delete_pipe(hdev, pipe);
if (r < 0)
return r;
}
hdev->gate2pipe[gate] = NFC_HCI_INVALID_PIPE;
return 0;
}
