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Commit 26fc6c7f authored by Christophe Ricard's avatar Christophe Ricard Committed by Samuel Ortiz
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NFC: st21nfca: Add HCI transaction event support 



The transaction notifies the host (DH) that an action
is required to manage a specific Secure Element application.

Signed-off-by: default avatarChristophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 5d1ceb7f

drivers/nfc/st21nfca/st21nfca_se.c

+21 −0
Original line number Diff line number Diff line
@@ -301,6 +301,8 @@ int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host, 
				u8 event, struct sk_buff *skb)

{

	int r = 0;

	struct device *dev = &hdev->ndev->dev;

	struct nfc_evt_transaction *transaction;



	pr_debug("connectivity gate event: %x\n", event);
@@ -308,6 +310,25 @@ int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host, 
	case ST21NFCA_EVT_CONNECTIVITY:

		break;

	case ST21NFCA_EVT_TRANSACTION:

		if (skb->len < NFC_MIN_AID_LENGTH + 2 &&

		    skb->data[0] != NFC_EVT_TRANSACTION_AID_TAG)

			return -EPROTO;



		transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,

						   skb->len - 2, GFP_KERNEL);



		transaction->aid_len = skb->data[1];

		memcpy(transaction->aid, &skb->data[2], skb->data[1]);



		if (skb->data[transaction->aid_len + 2] !=

		    NFC_EVT_TRANSACTION_PARAMS_TAG)

			return -EPROTO;



		transaction->params_len = skb->data[transaction->aid_len + 3];

		memcpy(transaction->params, skb->data +

		       transaction->aid_len + 4, transaction->params_len);



		r = nfc_se_transaction(hdev->ndev, host, transaction);

		break;

	default:

		return 1;