Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / nfc / hci / llc_nop.c

diff --git a/kernel/net/nfc/hci/llc_nop.c b/kernel/net/nfc/hci/llc_nop.c
new file mode 100644 (file)
index 0000000..d0435d5
--- /dev/null
+++ b/kernel/net/nfc/hci/llc_nop.c
@@ -0,0 +1,97 @@
+/*
+ * nop (passthrough) Link Layer Control
+ *
+ * Copyright (C) 2012  Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/types.h>
+
+#include "llc.h"
+
+struct llc_nop {
+       struct nfc_hci_dev *hdev;
+       xmit_to_drv_t xmit_to_drv;
+       rcv_to_hci_t rcv_to_hci;
+       int tx_headroom;
+       int tx_tailroom;
+       llc_failure_t llc_failure;
+};
+
+static void *llc_nop_init(struct nfc_hci_dev *hdev, xmit_to_drv_t xmit_to_drv,
+                         rcv_to_hci_t rcv_to_hci, int tx_headroom,
+                         int tx_tailroom, int *rx_headroom, int *rx_tailroom,
+                         llc_failure_t llc_failure)
+{
+       struct llc_nop *llc_nop;
+
+       *rx_headroom = 0;
+       *rx_tailroom = 0;
+
+       llc_nop = kzalloc(sizeof(struct llc_nop), GFP_KERNEL);
+       if (llc_nop == NULL)
+               return NULL;
+
+       llc_nop->hdev = hdev;
+       llc_nop->xmit_to_drv = xmit_to_drv;
+       llc_nop->rcv_to_hci = rcv_to_hci;
+       llc_nop->tx_headroom = tx_headroom;
+       llc_nop->tx_tailroom = tx_tailroom;
+       llc_nop->llc_failure = llc_failure;
+
+       return llc_nop;
+}
+
+static void llc_nop_deinit(struct nfc_llc *llc)
+{
+       kfree(nfc_llc_get_data(llc));
+}
+
+static int llc_nop_start(struct nfc_llc *llc)
+{
+       return 0;
+}
+
+static int llc_nop_stop(struct nfc_llc *llc)
+{
+       return 0;
+}
+
+static void llc_nop_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb)
+{
+       struct llc_nop *llc_nop = nfc_llc_get_data(llc);
+
+       llc_nop->rcv_to_hci(llc_nop->hdev, skb);
+}
+
+static int llc_nop_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb)
+{
+       struct llc_nop *llc_nop = nfc_llc_get_data(llc);
+
+       return llc_nop->xmit_to_drv(llc_nop->hdev, skb);
+}
+
+static struct nfc_llc_ops llc_nop_ops = {
+       .init = llc_nop_init,
+       .deinit = llc_nop_deinit,
+       .start = llc_nop_start,
+       .stop = llc_nop_stop,
+       .rcv_from_drv = llc_nop_rcv_from_drv,
+       .xmit_from_hci = llc_nop_xmit_from_hci,
+};
+
+int nfc_llc_nop_register(void)
+{
+       return nfc_llc_register(LLC_NOP_NAME, &llc_nop_ops);
+}