summaryrefslogtreecommitdiff
path: root/net/nfc/hci/core.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/nfc/hci/core.c')
-rw-r--r--net/nfc/hci/core.c137
1 files changed, 87 insertions, 50 deletions
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index e1a640d2b58..1ac7b3fac6c 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -32,6 +32,18 @@
/* Largest headroom needed for outgoing HCI commands */
#define HCI_CMDS_HEADROOM 1
+static int nfc_hci_result_to_errno(u8 result)
+{
+ switch (result) {
+ case NFC_HCI_ANY_OK:
+ return 0;
+ case NFC_HCI_ANY_E_TIMEOUT:
+ return -ETIME;
+ default:
+ return -1;
+ }
+}
+
static void nfc_hci_msg_tx_work(struct work_struct *work)
{
struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
@@ -46,7 +58,7 @@ static void nfc_hci_msg_tx_work(struct work_struct *work)
if (timer_pending(&hdev->cmd_timer) == 0) {
if (hdev->cmd_pending_msg->cb)
hdev->cmd_pending_msg->cb(hdev,
- NFC_HCI_ANY_E_TIMEOUT,
+ -ETIME,
NULL,
hdev->
cmd_pending_msg->
@@ -71,8 +83,7 @@ next_msg:
kfree_skb(skb);
skb_queue_purge(&msg->msg_frags);
if (msg->cb)
- msg->cb(hdev, NFC_HCI_ANY_E_NOK, NULL,
- msg->cb_context);
+ msg->cb(hdev, r, NULL, msg->cb_context);
kfree(msg);
break;
}
@@ -116,20 +127,13 @@ static void nfc_hci_msg_rx_work(struct work_struct *work)
}
}
-void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
- struct sk_buff *skb)
+static void __nfc_hci_cmd_completion(struct nfc_hci_dev *hdev, int err,
+ struct sk_buff *skb)
{
- mutex_lock(&hdev->msg_tx_mutex);
-
- if (hdev->cmd_pending_msg == NULL) {
- kfree_skb(skb);
- goto exit;
- }
-
del_timer_sync(&hdev->cmd_timer);
if (hdev->cmd_pending_msg->cb)
- hdev->cmd_pending_msg->cb(hdev, result, skb,
+ hdev->cmd_pending_msg->cb(hdev, err, skb,
hdev->cmd_pending_msg->cb_context);
else
kfree_skb(skb);
@@ -138,6 +142,19 @@ void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
hdev->cmd_pending_msg = NULL;
queue_work(hdev->msg_tx_wq, &hdev->msg_tx_work);
+}
+
+void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
+ struct sk_buff *skb)
+{
+ mutex_lock(&hdev->msg_tx_mutex);
+
+ if (hdev->cmd_pending_msg == NULL) {
+ kfree_skb(skb);
+ goto exit;
+ }
+
+ __nfc_hci_cmd_completion(hdev, nfc_hci_result_to_errno(result), skb);
exit:
mutex_unlock(&hdev->msg_tx_mutex);
@@ -170,6 +187,7 @@ static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
struct nfc_target *targets;
struct sk_buff *atqa_skb = NULL;
struct sk_buff *sak_skb = NULL;
+ struct sk_buff *uid_skb = NULL;
int r;
pr_debug("from gate %d\n", gate);
@@ -205,6 +223,19 @@ static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
targets->sens_res = be16_to_cpu(*(u16 *)atqa_skb->data);
targets->sel_res = sak_skb->data[0];
+ r = nfc_hci_get_param(hdev, NFC_HCI_RF_READER_A_GATE,
+ NFC_HCI_RF_READER_A_UID, &uid_skb);
+ if (r < 0)
+ goto exit;
+
+ if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ memcpy(targets->nfcid1, uid_skb->data, uid_skb->len);
+ targets->nfcid1_len = uid_skb->len;
+
if (hdev->ops->complete_target_discovered) {
r = hdev->ops->complete_target_discovered(hdev, gate,
targets);
@@ -213,7 +244,7 @@ static int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate)
}
break;
case NFC_HCI_RF_READER_B_GATE:
- targets->supported_protocols = NFC_PROTO_ISO14443_MASK;
+ targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
break;
default:
if (hdev->ops->target_from_gate)
@@ -240,6 +271,7 @@ exit:
kfree(targets);
kfree_skb(atqa_skb);
kfree_skb(sak_skb);
+ kfree_skb(uid_skb);
return r;
}
@@ -298,15 +330,15 @@ static void nfc_hci_cmd_timeout(unsigned long data)
}
static int hci_dev_connect_gates(struct nfc_hci_dev *hdev, u8 gate_count,
- u8 gates[])
+ struct nfc_hci_gate *gates)
{
int r;
- u8 *p = gates;
while (gate_count--) {
- r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID, *p);
+ r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
+ gates->gate, gates->pipe);
if (r < 0)
return r;
- p++;
+ gates++;
}
return 0;
@@ -316,14 +348,13 @@ static int hci_dev_session_init(struct nfc_hci_dev *hdev)
{
struct sk_buff *skb = NULL;
int r;
- u8 hci_gates[] = { /* NFC_HCI_ADMIN_GATE MUST be first */
- NFC_HCI_ADMIN_GATE, NFC_HCI_LOOPBACK_GATE,
- NFC_HCI_ID_MGMT_GATE, NFC_HCI_LINK_MGMT_GATE,
- NFC_HCI_RF_READER_B_GATE, NFC_HCI_RF_READER_A_GATE
- };
+
+ if (hdev->init_data.gates[0].gate != NFC_HCI_ADMIN_GATE)
+ return -EPROTO;
r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
- NFC_HCI_ADMIN_GATE);
+ hdev->init_data.gates[0].gate,
+ hdev->init_data.gates[0].pipe);
if (r < 0)
goto exit;
@@ -351,10 +382,6 @@ static int hci_dev_session_init(struct nfc_hci_dev *hdev)
if (r < 0)
goto exit;
- r = hci_dev_connect_gates(hdev, sizeof(hci_gates), hci_gates);
- if (r < 0)
- goto disconnect_all;
-
r = hci_dev_connect_gates(hdev, hdev->init_data.gate_count,
hdev->init_data.gates);
if (r < 0)
@@ -481,12 +508,13 @@ static int hci_dev_down(struct nfc_dev *nfc_dev)
return 0;
}
-static int hci_start_poll(struct nfc_dev *nfc_dev, u32 protocols)
+static int hci_start_poll(struct nfc_dev *nfc_dev,
+ u32 im_protocols, u32 tm_protocols)
{
struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
if (hdev->ops->start_poll)
- return hdev->ops->start_poll(hdev, protocols);
+ return hdev->ops->start_poll(hdev, im_protocols, tm_protocols);
else
return nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
@@ -511,9 +539,9 @@ static void hci_deactivate_target(struct nfc_dev *nfc_dev,
{
}
-static int hci_data_exchange(struct nfc_dev *nfc_dev, struct nfc_target *target,
- struct sk_buff *skb, data_exchange_cb_t cb,
- void *cb_context)
+static int hci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
+ struct sk_buff *skb, data_exchange_cb_t cb,
+ void *cb_context)
{
struct nfc_hci_dev *hdev = nfc_get_drvdata(nfc_dev);
int r;
@@ -579,7 +607,7 @@ static struct nfc_ops hci_nfc_ops = {
.stop_poll = hci_stop_poll,
.activate_target = hci_activate_target,
.deactivate_target = hci_deactivate_target,
- .data_exchange = hci_data_exchange,
+ .im_transceive = hci_transceive,
.check_presence = hci_check_presence,
};
@@ -682,13 +710,12 @@ EXPORT_SYMBOL(nfc_hci_register_device);
void nfc_hci_unregister_device(struct nfc_hci_dev *hdev)
{
- struct hci_msg *msg;
+ struct hci_msg *msg, *n;
skb_queue_purge(&hdev->rx_hcp_frags);
skb_queue_purge(&hdev->msg_rx_queue);
- while ((msg = list_first_entry(&hdev->msg_tx_queue, struct hci_msg,
- msg_l)) != NULL) {
+ list_for_each_entry_safe(msg, n, &hdev->msg_tx_queue, msg_l) {
list_del(&msg->msg_l);
skb_queue_purge(&msg->msg_frags);
kfree(msg);
@@ -716,6 +743,27 @@ void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev)
}
EXPORT_SYMBOL(nfc_hci_get_clientdata);
+static void nfc_hci_failure(struct nfc_hci_dev *hdev, int err)
+{
+ mutex_lock(&hdev->msg_tx_mutex);
+
+ if (hdev->cmd_pending_msg == NULL) {
+ nfc_driver_failure(hdev->ndev, err);
+ goto exit;
+ }
+
+ __nfc_hci_cmd_completion(hdev, err, NULL);
+
+exit:
+ mutex_unlock(&hdev->msg_tx_mutex);
+}
+
+void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err)
+{
+ nfc_hci_failure(hdev, err);
+}
+EXPORT_SYMBOL(nfc_hci_driver_failure);
+
void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
{
struct hcp_packet *packet;
@@ -726,16 +774,6 @@ void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
struct sk_buff *frag_skb;
int msg_len;
- if (skb == NULL) {
- /* TODO ELa: lower layer had permanent failure, need to
- * propagate that up
- */
-
- skb_queue_purge(&hdev->rx_hcp_frags);
-
- return;
- }
-
packet = (struct hcp_packet *)skb->data;
if ((packet->header & ~NFC_HCI_FRAGMENT) == 0) {
skb_queue_tail(&hdev->rx_hcp_frags, skb);
@@ -756,9 +794,8 @@ void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb)
hcp_skb = nfc_alloc_recv_skb(NFC_HCI_HCP_PACKET_HEADER_LEN +
msg_len, GFP_KERNEL);
if (hcp_skb == NULL) {
- /* TODO ELa: cannot deliver HCP message. How to
- * propagate error up?
- */
+ nfc_hci_failure(hdev, -ENOMEM);
+ return;
}
*skb_put(hcp_skb, NFC_HCI_HCP_PACKET_HEADER_LEN) = pipe;
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 12:46:02 +0000