The event transaction notifies the Device Host that an action is required
to manage a specific Secure Element application.
Signed-off-by: Christophe Ricard <christophe-h.ricard@xxxxxx>
---
drivers/nfc/st21nfca/st21nfca_se.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/nfc/st21nfca/st21nfca_se.c b/drivers/nfc/st21nfca/st21nfca_se.c
index 9b93d39..bd13cac 100644
--- a/drivers/nfc/st21nfca/st21nfca_se.c
+++ b/drivers/nfc/st21nfca/st21nfca_se.c
@@ -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;
--
2.1.0
--
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