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NFC: Define secure element IO API and commands
In order to send and receive ISO7816 APDUs to and from NFC embedded secure elements, we define a specific netlink command. On a typical SE use case, host applications will send very few APDUs (Less than 10) per transaction. This is why we decided to go for a simple netlink API. Defining another NFC socket protocol for such low traffic would have been overengineered. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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2 changed files with 9 additions and 0 deletions
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@ -53,6 +53,8 @@ struct nfc_dev;
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typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb,
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typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb,
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int err);
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int err);
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typedef void (*se_io_cb_t)(void *context, u8 *apdu, size_t apdu_len, int err);
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struct nfc_target;
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struct nfc_target;
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struct nfc_ops {
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struct nfc_ops {
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@ -79,6 +81,9 @@ struct nfc_ops {
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int (*discover_se)(struct nfc_dev *dev);
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int (*discover_se)(struct nfc_dev *dev);
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int (*enable_se)(struct nfc_dev *dev, u32 se_idx);
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int (*enable_se)(struct nfc_dev *dev, u32 se_idx);
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int (*disable_se)(struct nfc_dev *dev, u32 se_idx);
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int (*disable_se)(struct nfc_dev *dev, u32 se_idx);
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int (*se_io) (struct nfc_dev *dev, u32 se_idx,
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u8 *apdu, size_t apdu_length,
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se_io_cb_t cb, void *cb_context);
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};
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};
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#define NFC_TARGET_IDX_ANY -1
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#define NFC_TARGET_IDX_ANY -1
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@ -85,6 +85,7 @@
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* a specific SE notifies us about the end of a transaction. The parameter
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* a specific SE notifies us about the end of a transaction. The parameter
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* for this event is the application ID (AID).
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* for this event is the application ID (AID).
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* @NFC_CMD_GET_SE: Dump all discovered secure elements from an NFC controller.
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* @NFC_CMD_GET_SE: Dump all discovered secure elements from an NFC controller.
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* @NFC_CMD_SE_IO: Send/Receive APDUs to/from the selected secure element.
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*/
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*/
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enum nfc_commands {
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enum nfc_commands {
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NFC_CMD_UNSPEC,
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NFC_CMD_UNSPEC,
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@ -114,6 +115,7 @@ enum nfc_commands {
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NFC_EVENT_SE_CONNECTIVITY,
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NFC_EVENT_SE_CONNECTIVITY,
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NFC_EVENT_SE_TRANSACTION,
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NFC_EVENT_SE_TRANSACTION,
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NFC_CMD_GET_SE,
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NFC_CMD_GET_SE,
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NFC_CMD_SE_IO,
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/* private: internal use only */
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/* private: internal use only */
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__NFC_CMD_AFTER_LAST
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__NFC_CMD_AFTER_LAST
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};
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};
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@ -147,6 +149,7 @@ enum nfc_commands {
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* @NFC_ATTR_SE_INDEX: Secure element index
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* @NFC_ATTR_SE_INDEX: Secure element index
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* @NFC_ATTR_SE_TYPE: Secure element type (UICC or EMBEDDED)
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* @NFC_ATTR_SE_TYPE: Secure element type (UICC or EMBEDDED)
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* @NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS: Firmware download operation status
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* @NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS: Firmware download operation status
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* @NFC_ATTR_APDU: Secure element APDU
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*/
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*/
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enum nfc_attrs {
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enum nfc_attrs {
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NFC_ATTR_UNSPEC,
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NFC_ATTR_UNSPEC,
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@ -174,6 +177,7 @@ enum nfc_attrs {
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NFC_ATTR_SE_TYPE,
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NFC_ATTR_SE_TYPE,
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NFC_ATTR_SE_AID,
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NFC_ATTR_SE_AID,
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NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS,
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NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS,
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NFC_ATTR_SE_APDU,
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/* private: internal use only */
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/* private: internal use only */
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__NFC_ATTR_AFTER_LAST
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__NFC_ATTR_AFTER_LAST
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};
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};
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