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NFC: Forward NFC_EVT_TRANSACTION to user space

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NFC_EVT_TRANSACTION is sent through netlink in order for a
specific application running on a secure element to notify
userspace of an event. Typically the secure element application
counterpart on the host could interpret that event and act
upon it.

Forwarded information contains:
- SE host generating the event
- Application IDentifier doing the operation
- Applications parameters

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Christophe Ricard
2015-02-01 22:26:16 +01:00
committed by Samuel Ortiz
parent 8ae01f7967
commit 447b27c4f2
5 changed files with 98 additions and 0 deletions
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27
include/net/nfc/nfc.h
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@ -135,6 +135,31 @@ struct nfc_se {
u16 state;
};
/**
* nfc_evt_transaction - A struct for NFC secure element event transaction.
*
* @aid: The application identifier triggering the event
*
* @aid_len: The application identifier length [5:16]
*
* @params: The application parameters transmitted during the transaction
*
* @params_len: The applications parameters length [0:255]
*
*/
#define NFC_MIN_AID_LENGTH 5
#define NFC_MAX_AID_LENGTH 16
#define NFC_MAX_PARAMS_LENGTH 255
#define NFC_EVT_TRANSACTION_AID_TAG 0x81
#define NFC_EVT_TRANSACTION_PARAMS_TAG 0x82
struct nfc_evt_transaction {
u32 aid_len;
u8 aid[NFC_MAX_AID_LENGTH];
u8 params_len;
u8 params[NFC_MAX_PARAMS_LENGTH];
} __packed;
struct nfc_genl_data {
u32 poll_req_portid;
struct mutex genl_data_mutex;
@ -262,6 +287,8 @@ int nfc_tm_data_received(struct nfc_dev *dev, struct sk_buff *skb);
void nfc_driver_failure(struct nfc_dev *dev, int err);
int nfc_se_transaction(struct nfc_dev *dev, u8 se_idx,
struct nfc_evt_transaction *evt_transaction);
int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type);
int nfc_remove_se(struct nfc_dev *dev, u32 se_idx);
struct nfc_se *nfc_find_se(struct nfc_dev *dev, u32 se_idx);