cregit-Linux how code gets into the kernel

Release 4.8 net/nfc/hci/llc.c

Directory: net/nfc/hci
/*
 * Link Layer Control manager
 *
 * 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 <net/nfc/llc.h>

#include "llc.h"

static LIST_HEAD(llc_engines);


int nfc_llc_init(void) { int r; r = nfc_llc_nop_register(); if (r) goto exit; r = nfc_llc_shdlc_register(); if (r) goto exit; return 0; exit: nfc_llc_exit(); return r; }

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void nfc_llc_exit(void) { struct nfc_llc_engine *llc_engine, *n; list_for_each_entry_safe(llc_engine, n, &llc_engines, entry) { list_del(&llc_engine->entry); kfree(llc_engine->name); kfree(llc_engine); } }

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int nfc_llc_register(const char *name, struct nfc_llc_ops *ops) { struct nfc_llc_engine *llc_engine; llc_engine = kzalloc(sizeof(struct nfc_llc_engine), GFP_KERNEL); if (llc_engine == NULL) return -ENOMEM; llc_engine->name = kstrdup(name, GFP_KERNEL); if (llc_engine->name == NULL) { kfree(llc_engine); return -ENOMEM; } llc_engine->ops = ops; INIT_LIST_HEAD(&llc_engine->entry); list_add_tail(&llc_engine->entry, &llc_engines); return 0; }

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static struct nfc_llc_engine *nfc_llc_name_to_engine(const char *name) { struct nfc_llc_engine *llc_engine; list_for_each_entry(llc_engine, &llc_engines, entry) { if (strcmp(llc_engine->name, name) == 0) return llc_engine; } return NULL; }

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void nfc_llc_unregister(const char *name) { struct nfc_llc_engine *llc_engine; llc_engine = nfc_llc_name_to_engine(name); if (llc_engine == NULL) return; list_del(&llc_engine->entry); kfree(llc_engine->name); kfree(llc_engine); }

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struct nfc_llc *nfc_llc_allocate(const char *name, 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) { struct nfc_llc_engine *llc_engine; struct nfc_llc *llc; llc_engine = nfc_llc_name_to_engine(name); if (llc_engine == NULL) return NULL; llc = kzalloc(sizeof(struct nfc_llc), GFP_KERNEL); if (llc == NULL) return NULL; llc->data = llc_engine->ops->init(hdev, xmit_to_drv, rcv_to_hci, tx_headroom, tx_tailroom, &llc->rx_headroom, &llc->rx_tailroom, llc_failure); if (llc->data == NULL) { kfree(llc); return NULL; } llc->ops = llc_engine->ops; return llc; }

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void nfc_llc_free(struct nfc_llc *llc) { llc->ops->deinit(llc); kfree(llc); }

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int nfc_llc_start(struct nfc_llc *llc) { return llc->ops->start(llc); }

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EXPORT_SYMBOL(nfc_llc_start);
int nfc_llc_stop(struct nfc_llc *llc) { return llc->ops->stop(llc); }

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EXPORT_SYMBOL(nfc_llc_stop);
void nfc_llc_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb) { llc->ops->rcv_from_drv(llc, skb); }

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int nfc_llc_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb) { return llc->ops->xmit_from_hci(llc, skb); }

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void *nfc_llc_get_data(struct nfc_llc *llc) { return llc->data; }

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eric lapuyadeeric lapuyade57297.44%350.00%
christophe ricardchristophe ricard101.70%116.67%
axel linaxel lin40.68%116.67%
jeff kirsherjeff kirsher10.17%116.67%
Total587100.00%6100.00%
Directory: net/nfc/hci
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