87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* nop (passthrough) Link Layer Control
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*
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* Copyright (C) 2012 Intel Corporation. All rights reserved.
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*/
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#include <linux/types.h>
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#include "llc.h"
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struct llc_nop {
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struct nfc_hci_dev *hdev;
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xmit_to_drv_t xmit_to_drv;
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rcv_to_hci_t rcv_to_hci;
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int tx_headroom;
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int tx_tailroom;
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llc_failure_t llc_failure;
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};
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static void *llc_nop_init(struct nfc_hci_dev *hdev, xmit_to_drv_t xmit_to_drv,
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rcv_to_hci_t rcv_to_hci, int tx_headroom,
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int tx_tailroom, int *rx_headroom, int *rx_tailroom,
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llc_failure_t llc_failure)
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{
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struct llc_nop *llc_nop;
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*rx_headroom = 0;
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*rx_tailroom = 0;
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llc_nop = kzalloc(sizeof(struct llc_nop), GFP_KERNEL);
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if (llc_nop == NULL)
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return NULL;
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llc_nop->hdev = hdev;
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llc_nop->xmit_to_drv = xmit_to_drv;
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llc_nop->rcv_to_hci = rcv_to_hci;
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llc_nop->tx_headroom = tx_headroom;
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llc_nop->tx_tailroom = tx_tailroom;
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llc_nop->llc_failure = llc_failure;
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return llc_nop;
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}
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static void llc_nop_deinit(struct nfc_llc *llc)
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{
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kfree(nfc_llc_get_data(llc));
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}
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static int llc_nop_start(struct nfc_llc *llc)
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{
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return 0;
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}
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static int llc_nop_stop(struct nfc_llc *llc)
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{
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return 0;
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}
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static void llc_nop_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb)
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{
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struct llc_nop *llc_nop = nfc_llc_get_data(llc);
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llc_nop->rcv_to_hci(llc_nop->hdev, skb);
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}
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static int llc_nop_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb)
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{
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struct llc_nop *llc_nop = nfc_llc_get_data(llc);
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return llc_nop->xmit_to_drv(llc_nop->hdev, skb);
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}
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static const struct nfc_llc_ops llc_nop_ops = {
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.init = llc_nop_init,
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.deinit = llc_nop_deinit,
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.start = llc_nop_start,
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.stop = llc_nop_stop,
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.rcv_from_drv = llc_nop_rcv_from_drv,
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.xmit_from_hci = llc_nop_xmit_from_hci,
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};
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int nfc_llc_nop_register(void)
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{
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return nfc_llc_register(LLC_NOP_NAME, &llc_nop_ops);
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}
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