diff options
Diffstat (limited to 'net/nfc')
| -rw-r--r-- | net/nfc/hci/core.c | 58 | ||||
| -rw-r--r-- | net/nfc/hci/hci.h | 8 |
2 files changed, 44 insertions, 22 deletions
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c index e351e94f8d40..a664a67dff1c 100644 --- a/net/nfc/hci/core.c +++ b/net/nfc/hci/core.c @@ -193,52 +193,66 @@ exit: void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, struct sk_buff *skb) { - int r = 0; u8 gate = hdev->pipes[pipe].gate; - u8 local_gate, new_pipe; - u8 gate_opened = 0x00; + u8 status = NFC_HCI_ANY_OK; + struct hci_create_pipe_resp *create_info; + struct hci_delete_pipe_noti *delete_info; + struct hci_all_pipe_cleared_noti *cleared_info; pr_debug("from gate %x pipe %x cmd %x\n", gate, pipe, cmd); switch (cmd) { case NFC_HCI_ADM_NOTIFY_PIPE_CREATED: if (skb->len != 5) { - r = -EPROTO; - break; + status = NFC_HCI_ANY_E_NOK; + goto exit; } + create_info = (struct hci_create_pipe_resp *)skb->data; - local_gate = skb->data[3]; - new_pipe = skb->data[4]; - nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE, - NFC_HCI_ANY_OK, NULL, 0, NULL, NULL, 0); - - /* save the new created pipe and bind with local gate, + /* Save the new created pipe and bind with local gate, * the description for skb->data[3] is destination gate id * but since we received this cmd from host controller, we * are the destination and it is our local gate */ - hdev->gate2pipe[local_gate] = new_pipe; + hdev->gate2pipe[create_info->dest_gate] = create_info->pipe; + hdev->pipes[create_info->pipe].gate = create_info->dest_gate; + hdev->pipes[create_info->pipe].dest_host = + create_info->src_host; break; case NFC_HCI_ANY_OPEN_PIPE: - /* if the pipe is already created, we allow remote host to - * open it - */ - if (gate != 0xff) - nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE, - NFC_HCI_ANY_OK, &gate_opened, 1, - NULL, NULL, 0); + if (gate == NFC_HCI_INVALID_GATE) { + status = NFC_HCI_ANY_E_NOK; + goto exit; + } + break; + case NFC_HCI_ADM_NOTIFY_PIPE_DELETED: + if (skb->len != 1) { + status = NFC_HCI_ANY_E_NOK; + goto exit; + } + delete_info = (struct hci_delete_pipe_noti *)skb->data; + + hdev->pipes[delete_info->pipe].gate = NFC_HCI_INVALID_GATE; + hdev->pipes[delete_info->pipe].dest_host = NFC_HCI_INVALID_HOST; break; case NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED: - nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE, - NFC_HCI_ANY_OK, NULL, 0, NULL, NULL, 0); + if (skb->len != 1) { + status = NFC_HCI_ANY_E_NOK; + goto exit; + } + cleared_info = (struct hci_all_pipe_cleared_noti *)skb->data; + nfc_hci_reset_pipes_per_host(hdev, cleared_info->host); break; default: pr_info("Discarded unknown cmd %x to gate %x\n", cmd, gate); - r = -EINVAL; break; } +exit: + nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE, + status, NULL, 0, NULL, NULL, 0); + kfree_skb(skb); } diff --git a/net/nfc/hci/hci.h b/net/nfc/hci/hci.h index c3d2e2c1394c..c1278bd0fc5e 100644 --- a/net/nfc/hci/hci.h +++ b/net/nfc/hci/hci.h @@ -65,6 +65,14 @@ struct hci_create_pipe_resp { u8 pipe; } __packed; +struct hci_delete_pipe_noti { + u8 pipe; +} __packed; + +struct hci_all_pipe_cleared_noti { + u8 host; +} __packed; + #define NFC_HCI_FRAGMENT 0x7f #define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f)) |