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NFC: st21nfcb: Add HCI transaction event support

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

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 22:26:19 +01:00 • committed by Samuel Ortiz
parent 6095b0f07d
commit 5d1ceb7f5e
1 changed files with 22 additions and 1 deletions
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23
drivers/nfc/st21nfcb/st21nfcb_se.c
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@ -311,14 +311,35 @@ static int st21nfcb_hci_connectivity_event_received(struct nci_dev *ndev,
struct sk_buff *skb) struct sk_buff *skb)
{ {
int r = 0; int r = 0;
struct device *dev = &ndev->nfc_dev->dev;
struct nfc_evt_transaction *transaction;
pr_debug("connectivity gate event: %x\n", event); pr_debug("connectivity gate event: %x\n", event);
switch (event) { switch (event) {
case ST21NFCB_EVT_CONNECTIVITY: case ST21NFCB_EVT_CONNECTIVITY:
break; break;
case ST21NFCB_EVT_TRANSACTION: 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(ndev->nfc_dev, host, transaction);
default: default:
return 1; return 1;
} }