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NFC: Initial LLCP support

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This patch is an initial implementation for the NFC Logical Link Control
protocol. It's also known as NFC peer to peer mode.
This is a basic implementation as it lacks SDP (services Discovery
Protocol), frames aggregation support, and frame rejecion parsing.
Follow up patches will implement those missing features.
This code has been tested against a Nexus S phone implementing LLCP 1.0.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Samuel Ortiz
2011-12-14 16:43:12 +01:00
committed by John W. Linville
parent 361f3cb7f9
commit d646960f79
10 changed files with 2335 additions and 3 deletions
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54
net/nfc/nfc.h
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@@ -46,6 +46,60 @@ struct nfc_rawsock {
#define to_rawsock_sk(_tx_work) \
((struct sock *) container_of(_tx_work, struct nfc_rawsock, tx_work))
#ifdef CONFIG_NFC_LLCP
void nfc_llcp_mac_is_down(struct nfc_dev *dev);
void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
u8 comm_mode, u8 rf_mode);
int nfc_llcp_register_device(struct nfc_dev *dev);
void nfc_llcp_unregister_device(struct nfc_dev *dev);
int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len);
u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, u8 *general_bytes_len);
int __init nfc_llcp_init(void);
void nfc_llcp_exit(void);
#else
void nfc_llcp_mac_is_down(struct nfc_dev *dev)
{
}
void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
u8 comm_mode, u8 rf_mode)
{
}
static inline int nfc_llcp_register_device(struct nfc_dev *dev)
{
return 0;
}
static inline void nfc_llcp_unregister_device(struct nfc_dev *dev)
{
}
static inline int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len)
{
return 0;
}
static inline u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, u8 *gb_len)
{
*gb_len = 0;
return NULL;
}
static inline int nfc_llcp_init(void)
{
return 0;
}
static inline void nfc_llcp_exit(void)
{
}
#endif
int __init rawsock_init(void);
void rawsock_exit(void);