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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 33 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081038.745679586@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
150 lines
2.8 KiB
C
150 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Link Layer Control manager
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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 <net/nfc/llc.h>
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#include "llc.h"
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static LIST_HEAD(llc_engines);
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int nfc_llc_init(void)
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{
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int r;
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r = nfc_llc_nop_register();
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if (r)
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goto exit;
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r = nfc_llc_shdlc_register();
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if (r)
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goto exit;
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return 0;
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exit:
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nfc_llc_exit();
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return r;
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}
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void nfc_llc_exit(void)
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{
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struct nfc_llc_engine *llc_engine, *n;
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list_for_each_entry_safe(llc_engine, n, &llc_engines, entry) {
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list_del(&llc_engine->entry);
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kfree(llc_engine->name);
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kfree(llc_engine);
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}
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}
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int nfc_llc_register(const char *name, struct nfc_llc_ops *ops)
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{
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struct nfc_llc_engine *llc_engine;
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llc_engine = kzalloc(sizeof(struct nfc_llc_engine), GFP_KERNEL);
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if (llc_engine == NULL)
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return -ENOMEM;
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llc_engine->name = kstrdup(name, GFP_KERNEL);
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if (llc_engine->name == NULL) {
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kfree(llc_engine);
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return -ENOMEM;
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}
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llc_engine->ops = ops;
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INIT_LIST_HEAD(&llc_engine->entry);
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list_add_tail(&llc_engine->entry, &llc_engines);
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return 0;
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}
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static struct nfc_llc_engine *nfc_llc_name_to_engine(const char *name)
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{
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struct nfc_llc_engine *llc_engine;
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list_for_each_entry(llc_engine, &llc_engines, entry) {
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if (strcmp(llc_engine->name, name) == 0)
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return llc_engine;
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}
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return NULL;
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}
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void nfc_llc_unregister(const char *name)
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{
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struct nfc_llc_engine *llc_engine;
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llc_engine = nfc_llc_name_to_engine(name);
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if (llc_engine == NULL)
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return;
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list_del(&llc_engine->entry);
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kfree(llc_engine->name);
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kfree(llc_engine);
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}
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struct nfc_llc *nfc_llc_allocate(const char *name, 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, int tx_headroom,
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int tx_tailroom, llc_failure_t llc_failure)
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{
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struct nfc_llc_engine *llc_engine;
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struct nfc_llc *llc;
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llc_engine = nfc_llc_name_to_engine(name);
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if (llc_engine == NULL)
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return NULL;
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llc = kzalloc(sizeof(struct nfc_llc), GFP_KERNEL);
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if (llc == NULL)
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return NULL;
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llc->data = llc_engine->ops->init(hdev, xmit_to_drv, rcv_to_hci,
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tx_headroom, tx_tailroom,
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&llc->rx_headroom, &llc->rx_tailroom,
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llc_failure);
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if (llc->data == NULL) {
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kfree(llc);
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return NULL;
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}
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llc->ops = llc_engine->ops;
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return llc;
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}
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void nfc_llc_free(struct nfc_llc *llc)
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{
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llc->ops->deinit(llc);
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kfree(llc);
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}
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int nfc_llc_start(struct nfc_llc *llc)
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{
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return llc->ops->start(llc);
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}
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EXPORT_SYMBOL(nfc_llc_start);
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int nfc_llc_stop(struct nfc_llc *llc)
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{
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return llc->ops->stop(llc);
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}
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EXPORT_SYMBOL(nfc_llc_stop);
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void nfc_llc_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb)
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{
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llc->ops->rcv_from_drv(llc, skb);
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}
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int nfc_llc_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb)
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{
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return llc->ops->xmit_from_hci(llc, skb);
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}
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void *nfc_llc_get_data(struct nfc_llc *llc)
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{
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return llc->data;
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}
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