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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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3df40eb3a2
Several functions receive pointers to u8, char or sk_buff but do not modify the contents so make them const. This allows doing the same for local variables and in total makes the code a little bit safer. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
150 lines
4.4 KiB
C
150 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2011 Instituto Nokia de Tecnologia
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*
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* Authors:
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* Lauro Ramos Venancio <lauro.venancio@openbossa.org>
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* Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
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*/
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#ifndef __LOCAL_NFC_H
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#define __LOCAL_NFC_H
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#include <net/nfc/nfc.h>
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#include <net/sock.h>
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#define NFC_TARGET_MODE_IDLE 0
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#define NFC_TARGET_MODE_SLEEP 1
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struct nfc_protocol {
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int id;
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struct proto *proto;
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struct module *owner;
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int (*create)(struct net *net, struct socket *sock,
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const struct nfc_protocol *nfc_proto, int kern);
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};
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struct nfc_rawsock {
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struct sock sk;
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struct nfc_dev *dev;
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u32 target_idx;
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struct work_struct tx_work;
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bool tx_work_scheduled;
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};
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struct nfc_sock_list {
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struct hlist_head head;
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rwlock_t lock;
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};
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#define nfc_rawsock(sk) ((struct nfc_rawsock *) sk)
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#define to_rawsock_sk(_tx_work) \
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((struct sock *) container_of(_tx_work, struct nfc_rawsock, tx_work))
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struct nfc_llcp_sdp_tlv;
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void nfc_llcp_mac_is_down(struct nfc_dev *dev);
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void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
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u8 comm_mode, u8 rf_mode);
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int nfc_llcp_register_device(struct nfc_dev *dev);
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void nfc_llcp_unregister_device(struct nfc_dev *dev);
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int nfc_llcp_set_remote_gb(struct nfc_dev *dev, const u8 *gb, u8 gb_len);
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u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len);
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int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb);
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struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
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int __init nfc_llcp_init(void);
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void nfc_llcp_exit(void);
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void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp);
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void nfc_llcp_free_sdp_tlv_list(struct hlist_head *head);
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int __init rawsock_init(void);
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void rawsock_exit(void);
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int __init af_nfc_init(void);
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void af_nfc_exit(void);
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int nfc_proto_register(const struct nfc_protocol *nfc_proto);
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void nfc_proto_unregister(const struct nfc_protocol *nfc_proto);
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extern int nfc_devlist_generation;
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extern struct mutex nfc_devlist_mutex;
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int __init nfc_genl_init(void);
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void nfc_genl_exit(void);
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void nfc_genl_data_init(struct nfc_genl_data *genl_data);
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void nfc_genl_data_exit(struct nfc_genl_data *genl_data);
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int nfc_genl_targets_found(struct nfc_dev *dev);
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int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx);
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int nfc_genl_device_added(struct nfc_dev *dev);
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int nfc_genl_device_removed(struct nfc_dev *dev);
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int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
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u8 comm_mode, u8 rf_mode);
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int nfc_genl_dep_link_down_event(struct nfc_dev *dev);
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int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol);
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int nfc_genl_tm_deactivated(struct nfc_dev *dev);
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int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list);
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int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type);
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int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx);
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int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
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struct nfc_evt_transaction *evt_transaction);
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int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx);
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struct nfc_dev *nfc_get_device(unsigned int idx);
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static inline void nfc_put_device(struct nfc_dev *dev)
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{
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put_device(&dev->dev);
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}
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static inline void nfc_device_iter_init(struct class_dev_iter *iter)
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{
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class_dev_iter_init(iter, &nfc_class, NULL, NULL);
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}
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static inline struct nfc_dev *nfc_device_iter_next(struct class_dev_iter *iter)
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{
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struct device *d = class_dev_iter_next(iter);
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if (!d)
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return NULL;
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return to_nfc_dev(d);
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}
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static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
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{
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class_dev_iter_exit(iter);
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}
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int nfc_fw_download(struct nfc_dev *dev, const char *firmware_name);
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int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
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u32 result);
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int nfc_dev_up(struct nfc_dev *dev);
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int nfc_dev_down(struct nfc_dev *dev);
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int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols);
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int nfc_stop_poll(struct nfc_dev *dev);
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int nfc_dep_link_up(struct nfc_dev *dev, int target_idx, u8 comm_mode);
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int nfc_dep_link_down(struct nfc_dev *dev);
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int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol);
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int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx, u8 mode);
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int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
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data_exchange_cb_t cb, void *cb_context);
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int nfc_enable_se(struct nfc_dev *dev, u32 se_idx);
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int nfc_disable_se(struct nfc_dev *dev, u32 se_idx);
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#endif /* __LOCAL_NFC_H */
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