[RFC 13/14] NFC: st21nfcb: Add support for HCI event transaction
From: Christophe Ricard <hidden>
Date: 2015-01-27 00:28:23
Subsystem:
nfc subsystem, the rest · Maintainers:
David Heidelberg, Linus Torvalds
The event transaction notifies the Device Host that an action is required to manage a specific Secure Element application. Signed-off-by: Christophe Ricard <redacted> --- drivers/nfc/st21nfcb/st21nfcb_se.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/nfc/st21nfcb/st21nfcb_se.c b/drivers/nfc/st21nfcb/st21nfcb_se.c
index cf65368..6868043 100644
--- a/drivers/nfc/st21nfcb/st21nfcb_se.c
+++ b/drivers/nfc/st21nfcb/st21nfcb_se.c@@ -287,14 +287,35 @@ static int st21nfcb_hci_connectivity_event_received(struct st21nfcb_hci_dev *hde struct sk_buff *skb) { int r = 0; + struct device *dev = &hdev->ndev->nfc_dev->dev; + struct nfc_evt_transaction *transaction; pr_debug("connectivity gate event: %x\n", event); switch (event) { case ST21NFCB_EVT_CONNECTIVITY: + break; case ST21NFCB_EVT_TRANSACTION: - break; + 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->nfc_dev, host, transaction); default: return 1; }
--
2.1.0
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