From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christophe Ricard Subject: [RFC 14/14] NFC: st21nfca: Add support for HCI event transaction Date: Tue, 27 Jan 2015 01:28:24 +0100 Message-ID: <1422318504-10039-15-git-send-email-christophe-h.ricard@st.com> References: <1422318504-10039-1-git-send-email-christophe-h.ricard@st.com> Return-path: In-Reply-To: <1422318504-10039-1-git-send-email-christophe-h.ricard-qxv4g6HH51o@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: sameo-VuQAYsv1563Yd54FQh9/CA@public.gmane.org Cc: linux-nfc-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org, christophe.ricard-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, christophe-h.ricard-qxv4g6HH51o@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org The event transaction notifies the Device Host that an action is required to manage a specific Secure Element application. Signed-off-by: Christophe Ricard --- 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html