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-rw-r--r--net/nfc/core.c23
-rw-r--r--net/nfc/hci/command.c23
-rw-r--r--net/nfc/hci/core.c97
-rw-r--r--net/nfc/hci/hci.h10
-rw-r--r--net/nfc/hci/hcp.c11
-rw-r--r--net/nfc/nci/Makefile2
-rw-r--r--net/nfc/nci/core.c169
-rw-r--r--net/nfc/nci/data.c56
-rw-r--r--net/nfc/nci/hci.c694
-rw-r--r--net/nfc/nci/ntf.c77
-rw-r--r--net/nfc/nci/rsp.c120
-rw-r--r--net/nfc/netlink.c59
-rw-r--r--net/nfc/nfc.h2
13 files changed, 1237 insertions, 106 deletions
diff --git a/net/nfc/core.c b/net/nfc/core.c
index 819b87702b70..cff3f1614ad4 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -555,7 +555,6 @@ EXPORT_SYMBOL(nfc_find_se);
int nfc_enable_se(struct nfc_dev *dev, u32 se_idx)
{
-
struct nfc_se *se;
int rc;
@@ -605,7 +604,6 @@ error:
int nfc_disable_se(struct nfc_dev *dev, u32 se_idx)
{
-
struct nfc_se *se;
int rc;
@@ -934,6 +932,27 @@ int nfc_remove_se(struct nfc_dev *dev, u32 se_idx)
}
EXPORT_SYMBOL(nfc_remove_se);
+int nfc_se_transaction(struct nfc_dev *dev, u8 se_idx,
+ struct nfc_evt_transaction *evt_transaction)
+{
+ int rc;
+
+ pr_debug("transaction: %x\n", se_idx);
+
+ device_lock(&dev->dev);
+
+ if (!evt_transaction) {
+ rc = -EPROTO;
+ goto out;
+ }
+
+ rc = nfc_genl_se_transaction(dev, se_idx, evt_transaction);
+out:
+ device_unlock(&dev->dev);
+ return rc;
+}
+EXPORT_SYMBOL(nfc_se_transaction);
+
static void nfc_release(struct device *d)
{
struct nfc_dev *dev = to_nfc_dev(d);
diff --git a/net/nfc/hci/command.c b/net/nfc/hci/command.c
index 91df487aa0a9..844673cb7c18 100644
--- a/net/nfc/hci/command.c
+++ b/net/nfc/hci/command.c
@@ -116,23 +116,6 @@ int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
}
EXPORT_SYMBOL(nfc_hci_send_event);
-int nfc_hci_send_response(struct nfc_hci_dev *hdev, u8 gate, u8 response,
- const u8 *param, size_t param_len)
-{
- u8 pipe;
-
- pr_debug("\n");
-
- pipe = hdev->gate2pipe[gate];
- if (pipe == NFC_HCI_INVALID_PIPE)
- return -EADDRNOTAVAIL;
-
- return nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE,
- response, param, param_len, NULL, NULL,
- 0);
-}
-EXPORT_SYMBOL(nfc_hci_send_response);
-
/*
* Execute an hci command sent to gate.
* skb will contain response data if success. skb can be NULL if you are not
@@ -331,7 +314,7 @@ int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev)
if (r < 0)
return r;
- memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
+ nfc_hci_reset_pipes(hdev);
return 0;
}
@@ -345,7 +328,7 @@ int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
pr_debug("\n");
- if (hdev->gate2pipe[dest_gate] == NFC_HCI_DO_NOT_CREATE_PIPE)
+ if (pipe == NFC_HCI_DO_NOT_CREATE_PIPE)
return 0;
if (hdev->gate2pipe[dest_gate] != NFC_HCI_INVALID_PIPE)
@@ -380,6 +363,8 @@ open_pipe:
return r;
}
+ hdev->pipes[pipe].gate = dest_gate;
+ hdev->pipes[pipe].dest_host = dest_host;
hdev->gate2pipe[dest_gate] = pipe;
return 0;
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index ef50e7716c4a..6e061da2258a 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -46,6 +46,32 @@ int nfc_hci_result_to_errno(u8 result)
}
EXPORT_SYMBOL(nfc_hci_result_to_errno);
+void nfc_hci_reset_pipes(struct nfc_hci_dev *hdev)
+{
+ int i = 0;
+
+ for (i = 0; i < NFC_HCI_MAX_PIPES; i++) {
+ hdev->pipes[i].gate = NFC_HCI_INVALID_GATE;
+ hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST;
+ }
+ memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
+}
+EXPORT_SYMBOL(nfc_hci_reset_pipes);
+
+void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host)
+{
+ int i = 0;
+
+ for (i = 0; i < NFC_HCI_MAX_PIPES; i++) {
+ if (hdev->pipes[i].dest_host != host)
+ continue;
+
+ hdev->pipes[i].gate = NFC_HCI_INVALID_GATE;
+ hdev->pipes[i].dest_host = NFC_HCI_INVALID_HOST;
+ }
+}
+EXPORT_SYMBOL(nfc_hci_reset_pipes_per_host);
+
static void nfc_hci_msg_tx_work(struct work_struct *work)
{
struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
@@ -167,48 +193,69 @@ exit:
void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
struct sk_buff *skb)
{
- int r = 0;
- u8 gate = nfc_hci_pipe2gate(hdev, pipe);
- u8 local_gate, new_pipe;
- u8 gate_opened = 0x00;
+ u8 gate = hdev->pipes[pipe].gate;
+ u8 status = NFC_HCI_ANY_OK;
+ struct hci_create_pipe_resp *create_info;
+ struct hci_delete_pipe_noti *delete_info;
+ struct hci_all_pipe_cleared_noti *cleared_info;
pr_debug("from gate %x pipe %x cmd %x\n", gate, pipe, cmd);
switch (cmd) {
case NFC_HCI_ADM_NOTIFY_PIPE_CREATED:
if (skb->len != 5) {
- r = -EPROTO;
- break;
+ status = NFC_HCI_ANY_E_NOK;
+ goto exit;
}
+ create_info = (struct hci_create_pipe_resp *)skb->data;
- local_gate = skb->data[3];
- new_pipe = skb->data[4];
- nfc_hci_send_response(hdev, gate, NFC_HCI_ANY_OK, NULL, 0);
-
- /* save the new created pipe and bind with local gate,
+ /* Save the new created pipe and bind with local gate,
* the description for skb->data[3] is destination gate id
* but since we received this cmd from host controller, we
* are the destination and it is our local gate
*/
- hdev->gate2pipe[local_gate] = new_pipe;
+ hdev->gate2pipe[create_info->dest_gate] = create_info->pipe;
+ hdev->pipes[create_info->pipe].gate = create_info->dest_gate;
+ hdev->pipes[create_info->pipe].dest_host =
+ create_info->src_host;
break;
case NFC_HCI_ANY_OPEN_PIPE:
- /* if the pipe is already created, we allow remote host to
- * open it
- */
- if (gate != 0xff)
- nfc_hci_send_response(hdev, gate, NFC_HCI_ANY_OK,
- &gate_opened, 1);
+ if (gate == NFC_HCI_INVALID_GATE) {
+ status = NFC_HCI_ANY_E_NOK;
+ goto exit;
+ }
+ break;
+ case NFC_HCI_ADM_NOTIFY_PIPE_DELETED:
+ if (skb->len != 1) {
+ status = NFC_HCI_ANY_E_NOK;
+ goto exit;
+ }
+ delete_info = (struct hci_delete_pipe_noti *)skb->data;
+
+ hdev->pipes[delete_info->pipe].gate = NFC_HCI_INVALID_GATE;
+ hdev->pipes[delete_info->pipe].dest_host = NFC_HCI_INVALID_HOST;
break;
case NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED:
- nfc_hci_send_response(hdev, gate, NFC_HCI_ANY_OK, NULL, 0);
+ if (skb->len != 1) {
+ status = NFC_HCI_ANY_E_NOK;
+ goto exit;
+ }
+ cleared_info = (struct hci_all_pipe_cleared_noti *)skb->data;
+
+ nfc_hci_reset_pipes_per_host(hdev, cleared_info->host);
break;
default:
pr_info("Discarded unknown cmd %x to gate %x\n", cmd, gate);
- r = -EINVAL;
break;
}
+ if (hdev->ops->cmd_received)
+ hdev->ops->cmd_received(hdev, pipe, cmd, skb);
+
+exit:
+ nfc_hci_hcp_message_tx(hdev, pipe, NFC_HCI_HCP_RESPONSE,
+ status, NULL, 0, NULL, NULL, 0);
+
kfree_skb(skb);
}
@@ -330,15 +377,15 @@ void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
struct sk_buff *skb)
{
int r = 0;
- u8 gate = nfc_hci_pipe2gate(hdev, pipe);
+ u8 gate = hdev->pipes[pipe].gate;
- if (gate == 0xff) {
+ if (gate == NFC_HCI_INVALID_GATE) {
pr_err("Discarded event %x to unopened pipe %x\n", event, pipe);
goto exit;
}
if (hdev->ops->event_received) {
- r = hdev->ops->event_received(hdev, gate, event, skb);
+ r = hdev->ops->event_received(hdev, pipe, event, skb);
if (r <= 0)
goto exit_noskb;
}
@@ -573,7 +620,7 @@ static int hci_dev_down(struct nfc_dev *nfc_dev)
if (hdev->ops->close)
hdev->ops->close(hdev);
- memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
+ nfc_hci_reset_pipes(hdev);
return 0;
}
@@ -932,7 +979,7 @@ struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
nfc_set_drvdata(hdev->ndev, hdev);
- memset(hdev->gate2pipe, NFC_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
+ nfc_hci_reset_pipes(hdev);
hdev->quirks = quirks;
diff --git a/net/nfc/hci/hci.h b/net/nfc/hci/hci.h
index c3d2e2c1394c..ab4c8e80b1ad 100644
--- a/net/nfc/hci/hci.h
+++ b/net/nfc/hci/hci.h
@@ -65,6 +65,14 @@ struct hci_create_pipe_resp {
u8 pipe;
} __packed;
+struct hci_delete_pipe_noti {
+ u8 pipe;
+} __packed;
+
+struct hci_all_pipe_cleared_noti {
+ u8 host;
+} __packed;
+
#define NFC_HCI_FRAGMENT 0x7f
#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
@@ -77,8 +85,6 @@ int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
data_exchange_cb_t cb, void *cb_context,
unsigned long completion_delay);
-u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe);
-
void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
u8 instruction, struct sk_buff *skb);
diff --git a/net/nfc/hci/hcp.c b/net/nfc/hci/hcp.c
index e9de1514656e..1fe725d66085 100644
--- a/net/nfc/hci/hcp.c
+++ b/net/nfc/hci/hcp.c
@@ -124,17 +124,6 @@ out_skb_err:
return err;
}
-u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe)
-{
- int gate;
-
- for (gate = 0; gate < NFC_HCI_MAX_GATES; gate++)
- if (hdev->gate2pipe[gate] == pipe)
- return gate;
-
- return 0xff;
-}
-
/*
* Receive hcp message for pipe, with type and cmd.
* skb contains optional message data only.
diff --git a/net/nfc/nci/Makefile b/net/nfc/nci/Makefile
index 7aeedc43187d..7ed8949266cc 100644
--- a/net/nfc/nci/Makefile
+++ b/net/nfc/nci/Makefile
@@ -4,6 +4,6 @@
obj-$(CONFIG_NFC_NCI) += nci.o
-nci-objs := core.o data.o lib.o ntf.o rsp.o
+nci-objs := core.o data.o lib.o ntf.o rsp.o hci.o
nci-$(CONFIG_NFC_NCI_SPI) += spi.o
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 51feb5e63008..9575a1892607 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -41,10 +41,28 @@
#include <net/nfc/nci_core.h>
#include <linux/nfc.h>
+struct core_conn_create_data {
+ int length;
+ struct nci_core_conn_create_cmd *cmd;
+};
+
static void nci_cmd_work(struct work_struct *work);
static void nci_rx_work(struct work_struct *work);
static void nci_tx_work(struct work_struct *work);
+struct nci_conn_info *nci_get_conn_info_by_conn_id(struct nci_dev *ndev,
+ int conn_id)
+{
+ struct nci_conn_info *conn_info;
+
+ list_for_each_entry(conn_info, &ndev->conn_info_list, list) {
+ if (conn_info->conn_id == conn_id)
+ return conn_info;
+ }
+
+ return NULL;
+}
+
/* ---- NCI requests ---- */
void nci_req_complete(struct nci_dev *ndev, int result)
@@ -109,10 +127,10 @@ static int __nci_request(struct nci_dev *ndev,
return rc;
}
-static inline int nci_request(struct nci_dev *ndev,
- void (*req)(struct nci_dev *ndev,
- unsigned long opt),
- unsigned long opt, __u32 timeout)
+inline int nci_request(struct nci_dev *ndev,
+ void (*req)(struct nci_dev *ndev,
+ unsigned long opt),
+ unsigned long opt, __u32 timeout)
{
int rc;
@@ -456,6 +474,95 @@ int nci_set_config(struct nci_dev *ndev, __u8 id, size_t len, __u8 *val)
}
EXPORT_SYMBOL(nci_set_config);
+static void nci_nfcee_discover_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct nci_nfcee_discover_cmd cmd;
+ __u8 action = opt;
+
+ cmd.discovery_action = action;
+
+ nci_send_cmd(ndev, NCI_OP_NFCEE_DISCOVER_CMD, 1, &cmd);
+}
+
+int nci_nfcee_discover(struct nci_dev *ndev, u8 action)
+{
+ return nci_request(ndev, nci_nfcee_discover_req, action,
+ msecs_to_jiffies(NCI_CMD_TIMEOUT));
+}
+EXPORT_SYMBOL(nci_nfcee_discover);
+
+static void nci_nfcee_mode_set_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct nci_nfcee_mode_set_cmd *cmd =
+ (struct nci_nfcee_mode_set_cmd *)opt;
+
+ nci_send_cmd(ndev, NCI_OP_NFCEE_MODE_SET_CMD,
+ sizeof(struct nci_nfcee_mode_set_cmd), cmd);
+}
+
+int nci_nfcee_mode_set(struct nci_dev *ndev, u8 nfcee_id, u8 nfcee_mode)
+{
+ struct nci_nfcee_mode_set_cmd cmd;
+
+ cmd.nfcee_id = nfcee_id;
+ cmd.nfcee_mode = nfcee_mode;
+
+ return nci_request(ndev, nci_nfcee_mode_set_req, (unsigned long)&cmd,
+ msecs_to_jiffies(NCI_CMD_TIMEOUT));
+}
+EXPORT_SYMBOL(nci_nfcee_mode_set);
+
+static void nci_core_conn_create_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct core_conn_create_data *data =
+ (struct core_conn_create_data *)opt;
+
+ nci_send_cmd(ndev, NCI_OP_CORE_CONN_CREATE_CMD, data->length, data->cmd);
+}
+
+int nci_core_conn_create(struct nci_dev *ndev, u8 destination_type,
+ u8 number_destination_params,
+ size_t params_len,
+ struct core_conn_create_dest_spec_params *params)
+{
+ int r;
+ struct nci_core_conn_create_cmd *cmd;
+ struct core_conn_create_data data;
+
+ data.length = params_len + sizeof(struct nci_core_conn_create_cmd);
+ cmd = kzalloc(data.length, GFP_KERNEL);
+ if (!cmd)
+ return -ENOMEM;
+
+ cmd->destination_type = destination_type;
+ cmd->number_destination_params = number_destination_params;
+ memcpy(cmd->params, params, params_len);
+
+ data.cmd = cmd;
+ ndev->cur_id = params->value[DEST_SPEC_PARAMS_ID_INDEX];
+
+ r = __nci_request(ndev, nci_core_conn_create_req,
+ (unsigned long)&data,
+ msecs_to_jiffies(NCI_CMD_TIMEOUT));
+ kfree(cmd);
+ return r;
+}
+EXPORT_SYMBOL(nci_core_conn_create);
+
+static void nci_core_conn_close_req(struct nci_dev *ndev, unsigned long opt)
+{
+ __u8 conn_id = opt;
+
+ nci_send_cmd(ndev, NCI_OP_CORE_CONN_CLOSE_CMD, 1, &conn_id);
+}
+
+int nci_core_conn_close(struct nci_dev *ndev, u8 conn_id)
+{
+ return nci_request(ndev, nci_core_conn_close_req, conn_id,
+ msecs_to_jiffies(NCI_CMD_TIMEOUT));
+}
+EXPORT_SYMBOL(nci_core_conn_close);
+
static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
@@ -712,6 +819,11 @@ static int nci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
int rc;
+ struct nci_conn_info *conn_info;
+
+ conn_info = ndev->rf_conn_info;
+ if (!conn_info)
+ return -EPROTO;
pr_debug("target_idx %d, len %d\n", target->idx, skb->len);
@@ -724,8 +836,8 @@ static int nci_transceive(struct nfc_dev *nfc_dev, struct nfc_target *target,
return -EBUSY;
/* store cb and context to be used on receiving data */
- ndev->data_exchange_cb = cb;
- ndev->data_exchange_cb_context = cb_context;
+ conn_info->data_exchange_cb = cb;
+ conn_info->data_exchange_cb_context = cb_context;
rc = nci_send_data(ndev, NCI_STATIC_RF_CONN_ID, skb);
if (rc)
@@ -768,10 +880,16 @@ static int nci_disable_se(struct nfc_dev *nfc_dev, u32 se_idx)
static int nci_discover_se(struct nfc_dev *nfc_dev)
{
+ int r;
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
- if (ndev->ops->discover_se)
+ if (ndev->ops->discover_se) {
+ r = nci_nfcee_discover(ndev, NCI_NFCEE_DISCOVERY_ACTION_ENABLE);
+ if (r != NCI_STATUS_OK)
+ return -EPROTO;
+
return ndev->ops->discover_se(ndev);
+ }
return 0;
}
@@ -807,7 +925,6 @@ static struct nfc_ops nci_nfc_ops = {
};
/* ---- Interface to NCI drivers ---- */
-
/**
* nci_allocate_device - allocate a new nci device
*
@@ -842,13 +959,20 @@ struct nci_dev *nci_allocate_device(struct nci_ops *ops,
tx_headroom + NCI_DATA_HDR_SIZE,
tx_tailroom);
if (!ndev->nfc_dev)
- goto free_exit;
+ goto free_nci;
+
+ ndev->hci_dev = nci_hci_allocate(ndev);
+ if (!ndev->hci_dev)
+ goto free_nfc;
nfc_set_drvdata(ndev->nfc_dev, ndev);
return ndev;
-free_exit:
+free_nfc:
+ kfree(ndev->nfc_dev);
+
+free_nci:
kfree(ndev);
return NULL;
}
@@ -913,6 +1037,7 @@ int nci_register_device(struct nci_dev *ndev)
(unsigned long) ndev);
mutex_init(&ndev->req_lock);
+ INIT_LIST_HEAD(&ndev->conn_info_list);
rc = nfc_register_device(ndev->nfc_dev);
if (rc)
@@ -938,12 +1063,19 @@ EXPORT_SYMBOL(nci_register_device);
*/
void nci_unregister_device(struct nci_dev *ndev)
{
+ struct nci_conn_info *conn_info, *n;
+
nci_close_device(ndev);
destroy_workqueue(ndev->cmd_wq);
destroy_workqueue(ndev->rx_wq);
destroy_workqueue(ndev->tx_wq);
+ list_for_each_entry_safe(conn_info, n, &ndev->conn_info_list, list) {
+ list_del(&conn_info->list);
+ /* conn_info is allocated with devm_kzalloc */
+ }
+
nfc_unregister_device(ndev->nfc_dev);
}
EXPORT_SYMBOL(nci_unregister_device);
@@ -1027,20 +1159,25 @@ int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload)
static void nci_tx_work(struct work_struct *work)
{
struct nci_dev *ndev = container_of(work, struct nci_dev, tx_work);
+ struct nci_conn_info *conn_info;
struct sk_buff *skb;
- pr_debug("credits_cnt %d\n", atomic_read(&ndev->credits_cnt));
+ conn_info = nci_get_conn_info_by_conn_id(ndev, ndev->cur_conn_id);
+ if (!conn_info)
+ return;
+
+ pr_debug("credits_cnt %d\n", atomic_read(&conn_info->credits_cnt));
/* Send queued tx data */
- while (atomic_read(&ndev->credits_cnt)) {
+ while (atomic_read(&conn_info->credits_cnt)) {
skb = skb_dequeue(&ndev->tx_q);
if (!skb)
return;
/* Check if data flow control is used */
- if (atomic_read(&ndev->credits_cnt) !=
+ if (atomic_read(&conn_info->credits_cnt) !=
NCI_DATA_FLOW_CONTROL_NOT_USED)
- atomic_dec(&ndev->credits_cnt);
+ atomic_dec(&conn_info->credits_cnt);
pr_debug("NCI TX: MT=data, PBF=%d, conn_id=%d, plen=%d\n",
nci_pbf(skb->data),
@@ -1092,7 +1229,9 @@ static void nci_rx_work(struct work_struct *work)
if (test_bit(NCI_DATA_EXCHANGE_TO, &ndev->flags)) {
/* complete the data exchange transaction, if exists */
if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
- nci_data_exchange_complete(ndev, NULL, -ETIMEDOUT);
+ nci_data_exchange_complete(ndev, NULL,
+ ndev->cur_conn_id,
+ -ETIMEDOUT);
clear_bit(NCI_DATA_EXCHANGE_TO, &ndev->flags);
}
diff --git a/net/nfc/nci/data.c b/net/nfc/nci/data.c
index a2de2a8cb00e..566466d90048 100644
--- a/net/nfc/nci/data.c
+++ b/net/nfc/nci/data.c
@@ -36,10 +36,20 @@
/* Complete data exchange transaction and forward skb to nfc core */
void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
- int err)
+ __u8 conn_id, int err)
{
- data_exchange_cb_t cb = ndev->data_exchange_cb;
- void *cb_context = ndev->data_exchange_cb_context;
+ struct nci_conn_info *conn_info;
+ data_exchange_cb_t cb;
+ void *cb_context;
+
+ conn_info = nci_get_conn_info_by_conn_id(ndev, conn_id);
+ if (!conn_info) {
+ kfree_skb(skb);
+ goto exit;
+ }
+
+ cb = conn_info->data_exchange_cb;
+ cb_context = conn_info->data_exchange_cb_context;
pr_debug("len %d, err %d\n", skb ? skb->len : 0, err);
@@ -48,9 +58,6 @@ void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
clear_bit(NCI_DATA_EXCHANGE_TO, &ndev->flags);
if (cb) {
- ndev->data_exchange_cb = NULL;
- ndev->data_exchange_cb_context = NULL;
-
/* forward skb to nfc core */
cb(cb_context, skb, err);
} else if (skb) {
@@ -60,6 +67,7 @@ void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
kfree_skb(skb);
}
+exit:
clear_bit(NCI_DATA_EXCHANGE, &ndev->flags);
}
@@ -85,6 +93,7 @@ static inline void nci_push_data_hdr(struct nci_dev *ndev,
static int nci_queue_tx_data_frags(struct nci_dev *ndev,
__u8 conn_id,
struct sk_buff *skb) {
+ struct nci_conn_info *conn_info;
int total_len = skb->len;
unsigned char *data = skb->data;
unsigned long flags;
@@ -95,11 +104,17 @@ static int nci_queue_tx_data_frags(struct nci_dev *ndev,
pr_debug("conn_id 0x%x, total_len %d\n", conn_id, total_len);
+ conn_info = nci_get_conn_info_by_conn_id(ndev, conn_id);
+ if (!conn_info) {
+ rc = -EPROTO;
+ goto free_exit;
+ }
+
__skb_queue_head_init(&frags_q);
while (total_len) {
frag_len =
- min_t(int, total_len, ndev->max_data_pkt_payload_size);
+ min_t(int, total_len, conn_info->max_pkt_payload_len);
skb_frag = nci_skb_alloc(ndev,
(NCI_DATA_HDR_SIZE + frag_len),
@@ -151,12 +166,19 @@ exit:
/* Send NCI data */
int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb)
{
+ struct nci_conn_info *conn_info;
int rc = 0;
pr_debug("conn_id 0x%x, plen %d\n", conn_id, skb->len);
+ conn_info = nci_get_conn_info_by_conn_id(ndev, conn_id);
+ if (!conn_info) {
+ rc = -EPROTO;
+ goto free_exit;
+ }
+
/* check if the packet need to be fragmented */
- if (skb->len <= ndev->max_data_pkt_payload_size) {
+ if (skb->len <= conn_info->max_pkt_payload_len) {
/* no need to fragment packet */
nci_push_data_hdr(ndev, conn_id, skb, NCI_PBF_LAST);
@@ -170,6 +192,7 @@ int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb)
}
}
+ ndev->cur_conn_id = conn_id;
queue_work(ndev->tx_wq, &ndev->tx_work);
goto exit;
@@ -185,7 +208,7 @@ exit:
static void nci_add_rx_data_frag(struct nci_dev *ndev,
struct sk_buff *skb,
- __u8 pbf, __u8 status)
+ __u8 pbf, __u8 conn_id, __u8 status)
{
int reassembly_len;
int err = 0;
@@ -229,16 +252,13 @@ static void nci_add_rx_data_frag(struct nci_dev *ndev,
}
exit:
- if (ndev->nfc_dev->rf_mode == NFC_RF_INITIATOR) {
- nci_data_exchange_complete(ndev, skb, err);
- } else if (ndev->nfc_dev->rf_mode == NFC_RF_TARGET) {
+ if (ndev->nfc_dev->rf_mode == NFC_RF_TARGET) {
/* Data received in Target mode, forward to nfc core */
err = nfc_tm_data_received(ndev->nfc_dev, skb);
if (err)
pr_err("unable to handle received data\n");
} else {
- pr_err("rf mode unknown\n");
- kfree_skb(skb);
+ nci_data_exchange_complete(ndev, skb, conn_id, err);
}
}
@@ -247,6 +267,8 @@ void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
__u8 pbf = nci_pbf(skb->data);
__u8 status = 0;
+ __u8 conn_id = nci_conn_id(skb->data);
+ struct nci_conn_info *conn_info;
pr_debug("len %d\n", skb->len);
@@ -255,6 +277,10 @@ void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb)
nci_conn_id(skb->data),
nci_plen(skb->data));
+ conn_info = nci_get_conn_info_by_conn_id(ndev, nci_conn_id(skb->data));
+ if (!conn_info)
+ return;
+
/* strip the nci data header */
skb_pull(skb, NCI_DATA_HDR_SIZE);
@@ -268,5 +294,5 @@ void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb)
skb_trim(skb, (skb->len - 1));
}
- nci_add_rx_data_frag(ndev, skb, pbf, nci_to_errno(status));
+ nci_add_rx_data_frag(ndev, skb, pbf, conn_id, nci_to_errno(status));
}
diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
new file mode 100644
index 000000000000..ed54ec533836
--- /dev/null
+++ b/net/nfc/nci/hci.c
@@ -0,0 +1,694 @@
+/*
+ * The NFC Controller Interface is the communication protocol between an
+ * NFC Controller (NFCC) and a Device Host (DH).
+ * This is the HCI over NCI implementation, as specified in the 10.2
+ * section of the NCI 1.1 specification.
+ *
+ * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <linux/skbuff.h>
+
+#include "../nfc.h"
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+#include <linux/nfc.h>
+
+struct nci_data {
+ u8 conn_id;
+ u8 pipe;
+ u8 cmd;
+ const u8 *data;
+ u32 data_len;
+} __packed;
+
+struct nci_hci_create_pipe_params {
+ u8 src_gate;
+ u8 dest_host;
+ u8 dest_gate;
+} __packed;
+
+struct nci_hci_create_pipe_resp {
+ u8 src_host;
+ u8 src_gate;
+ u8 dest_host;
+ u8 dest_gate;
+ u8 pipe;
+} __packed;
+
+struct nci_hci_delete_pipe_noti {
+ u8 pipe;
+} __packed;
+
+struct nci_hci_all_pipe_cleared_noti {
+ u8 host;
+} __packed;
+
+struct nci_hcp_message {
+ u8 header; /* type -cmd,evt,rsp- + instruction */
+ u8 data[];
+} __packed;
+
+struct nci_hcp_packet {
+ u8 header; /* cbit+pipe */
+ struct nci_hcp_message message;
+} __packed;
+
+#define NCI_HCI_ANY_SET_PARAMETER 0x01
+#define NCI_HCI_ANY_GET_PARAMETER 0x02
+#define NCI_HCI_ANY_CLOSE_PIPE 0x04
+
+#define NCI_HFP_NO_CHAINING 0x80
+
+#define NCI_NFCEE_ID_HCI 0x80
+
+#define NCI_EVT_HOT_PLUG 0x03
+
+#define NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY 0x01
+
+/* HCP headers */
+#define NCI_HCI_HCP_PACKET_HEADER_LEN 1
+#define NCI_HCI_HCP_MESSAGE_HEADER_LEN 1
+#define NCI_HCI_HCP_HEADER_LEN 2
+
+/* HCP types */
+#define NCI_HCI_HCP_COMMAND 0x00
+#define NCI_HCI_HCP_EVENT 0x01
+#define NCI_HCI_HCP_RESPONSE 0x02
+
+#define NCI_HCI_ADM_NOTIFY_PIPE_CREATED 0x12
+#define NCI_HCI_ADM_NOTIFY_PIPE_DELETED 0x13
+#define NCI_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED 0x15
+
+#define NCI_HCI_FRAGMENT 0x7f
+#define NCI_HCP_HEADER(type, instr) ((((type) & 0x03) << 6) |\
+ ((instr) & 0x3f))
+
+#define NCI_HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
+#define NCI_HCP_MSG_GET_CMD(header) (header & 0x3f)
+#define NCI_HCP_MSG_GET_PIPE(header) (header & 0x7f)
+
+/* HCI core */
+static void nci_hci_reset_pipes(struct nci_hci_dev *hdev)
+{
+ int i;
+
+ for (i = 0; i < NCI_HCI_MAX_PIPES; i++) {
+ hdev->pipes[i].gate = NCI_HCI_INVALID_GATE;
+ hdev->pipes[i].host = NCI_HCI_INVALID_HOST;
+ }
+ memset(hdev->gate2pipe, NCI_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
+}
+
+static void nci_hci_reset_pipes_per_host(struct nci_dev *ndev, u8 host)
+{
+ int i;
+
+ for (i = 0; i < NCI_HCI_MAX_PIPES; i++) {
+ if (ndev->hci_dev->pipes[i].host == host) {
+ ndev->hci_dev->pipes[i].gate = NCI_HCI_INVALID_GATE;
+ ndev->hci_dev->pipes[i].host = NCI_HCI_INVALID_HOST;
+ }
+ }
+}
+
+/* Fragment HCI data over NCI packet.
+ * NFC Forum NCI 10.2.2 Data Exchange:
+ * The payload of the Data Packets sent on the Logical Connection SHALL be
+ * valid HCP packets, as defined within [ETSI_102622]. Each Data Packet SHALL
+ * contain a single HCP packet. NCI Segmentation and Reassembly SHALL NOT be
+ * applied to Data Messages in either direction. The HCI fragmentation mechanism
+ * is used if required.
+ */
+static int nci_hci_send_data(struct nci_dev *ndev, u8 pipe,
+ const u8 data_type, const u8 *data,
+ size_t data_len)
+{
+ struct nci_conn_info *conn_info;
+ struct sk_buff *skb;
+ int len, i, r;
+ u8 cb = pipe;
+
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info)
+ return -EPROTO;
+
+ skb = nci_skb_alloc(ndev, 2 + conn_info->max_pkt_payload_len +
+ NCI_DATA_HDR_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, 2 + NCI_DATA_HDR_SIZE);
+ *skb_push(skb, 1) = data_type;
+
+ i = 0;
+ len = conn_info->max_pkt_payload_len;
+
+ do {
+ /* If last packet add NCI_HFP_NO_CHAINING */
+ if (i + conn_info->max_pkt_payload_len -
+ (skb->len + 1) >= data_len) {
+ cb |= NCI_HFP_NO_CHAINING;
+ len = data_len - i;
+ } else {
+ len = conn_info->max_pkt_payload_len - skb->len - 1;
+ }
+
+ *skb_push(skb, 1) = cb;
+
+ if (len > 0)
+ memcpy(skb_put(skb, len), data + i, len);
+
+ r = nci_send_data(ndev, conn_info->conn_id, skb);
+ if (r < 0)
+ return r;
+
+ i += len;
+ if (i < data_len) {
+ skb_trim(skb, 0);
+ skb_pull(skb, len);
+ }
+ } while (i < data_len);
+
+ return i;
+}
+
+static void nci_hci_send_data_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct nci_data *data = (struct nci_data *)opt;
+
+ nci_hci_send_data(ndev, data->pipe, data->cmd,
+ data->data, data->data_len);
+}
+
+int nci_hci_send_event(struct nci_dev *ndev, u8 gate, u8 event,
+ const u8 *param, size_t param_len)
+{
+ u8 pipe = ndev->hci_dev->gate2pipe[gate];
+
+ if (pipe == NCI_HCI_INVALID_PIPE)
+ return -EADDRNOTAVAIL;
+
+ return nci_hci_send_data(ndev, pipe,
+ NCI_HCP_HEADER(NCI_HCI_HCP_EVENT, event),
+ param, param_len);
+}
+EXPORT_SYMBOL(nci_hci_send_event);
+
+int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd,
+ const u8 *param, size_t param_len,
+ struct sk_buff **skb)
+{
+ struct nci_conn_info *conn_info;
+ struct nci_data data;
+ int r;
+ u8 pipe = ndev->hci_dev->gate2pipe[gate];
+
+ if (pipe == NCI_HCI_INVALID_PIPE)
+ return -EADDRNOTAVAIL;
+
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info)
+ return -EPROTO;
+
+ data.conn_id = conn_info->conn_id;
+ data.pipe = pipe;
+ data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND, cmd);
+ data.data = param;
+ data.data_len = param_len;
+
+ r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+
+ if (r == NCI_STATUS_OK)
+ *skb = conn_info->rx_skb;
+
+ return r;
+}
+EXPORT_SYMBOL(nci_hci_send_cmd);
+
+static void nci_hci_event_received(struct nci_dev *ndev, u8 pipe,
+ u8 event, struct sk_buff *skb)
+{
+ if (ndev->ops->hci_event_received)
+ ndev->ops->hci_event_received(ndev, pipe, event, skb);
+}
+
+static void nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe,
+ u8 cmd, struct sk_buff *skb)
+{
+ u8 gate = ndev->hci_dev->pipes[pipe].gate;
+ u8 status = NCI_HCI_ANY_OK | ~NCI_HCI_FRAGMENT;
+ u8 dest_gate, new_pipe;
+ struct nci_hci_create_pipe_resp *create_info;
+ struct nci_hci_delete_pipe_noti *delete_info;
+ struct nci_hci_all_pipe_cleared_noti *cleared_info;
+
+ pr_debug("from gate %x pipe %x cmd %x\n", gate, pipe, cmd);
+
+ switch (cmd) {
+ case NCI_HCI_ADM_NOTIFY_PIPE_CREATED:
+ if (skb->len != 5) {
+ status = NCI_HCI_ANY_E_NOK;
+ goto exit;
+ }
+ create_info = (struct nci_hci_create_pipe_resp *)skb->data;
+ dest_gate = create_info->dest_gate;
+ new_pipe = create_info->pipe;
+
+ /* Save the new created pipe and bind with local gate,
+ * the description for skb->data[3] is destination gate id
+ * but since we received this cmd from host controller, we
+ * are the destination and it is our local gate
+ */
+ ndev->hci_dev->gate2pipe[dest_gate] = new_pipe;
+ ndev->hci_dev->pipes[new_pipe].gate = dest_gate;
+ ndev->hci_dev->pipes[new_pipe].host =
+ create_info->src_host;
+ break;
+ case NCI_HCI_ANY_OPEN_PIPE:
+ /* If the pipe is not created report an error */
+ if (gate == NCI_HCI_INVALID_GATE) {
+ status = NCI_HCI_ANY_E_NOK;
+ goto exit;
+ }
+ break;
+ case NCI_HCI_ADM_NOTIFY_PIPE_DELETED:
+ if (skb->len != 1) {
+ status = NCI_HCI_ANY_E_NOK;
+ goto exit;
+ }
+ delete_info = (struct nci_hci_delete_pipe_noti *)skb->data;
+
+ ndev->hci_dev->pipes[delete_info->pipe].gate =
+ NCI_HCI_INVALID_GATE;
+ ndev->hci_dev->pipes[delete_info->pipe].host =
+ NCI_HCI_INVALID_HOST;
+ break;
+ case NCI_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED:
+ if (skb->len != 1) {
+ status = NCI_HCI_ANY_E_NOK;
+ goto exit;
+ }
+
+ cleared_info =
+ (struct nci_hci_all_pipe_cleared_noti *)skb->data;
+ nci_hci_reset_pipes_per_host(ndev, cleared_info->host);
+ break;
+ default:
+ pr_debug("Discarded unknown cmd %x to gate %x\n", cmd, gate);
+ break;
+ }
+
+ if (ndev->ops->hci_cmd_received)
+ ndev->ops->hci_cmd_received(ndev, pipe, cmd, skb);
+
+exit:
+ nci_hci_send_data(ndev, pipe, status, NULL, 0);
+
+ kfree_skb(skb);
+}
+
+static void nci_hci_resp_received(struct nci_dev *ndev, u8 pipe,
+ u8 result, struct sk_buff *skb)
+{
+ struct nci_conn_info *conn_info;
+ u8 status = result;
+
+ if (result != NCI_HCI_ANY_OK)
+ goto exit;
+
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info) {
+ status = NCI_STATUS_REJECTED;
+ goto exit;
+ }
+
+ conn_info->rx_skb = skb;
+
+exit:
+ nci_req_complete(ndev, status);
+}
+
+/* Receive hcp message for pipe, with type and cmd.
+ * skb contains optional message data only.
+ */
+static void nci_hci_hcp_message_rx(struct nci_dev *ndev, u8 pipe,
+ u8 type, u8 instruction, struct sk_buff *skb)
+{
+ switch (type) {
+ case NCI_HCI_HCP_RESPONSE:
+ nci_hci_resp_received(ndev, pipe, instruction, skb);
+ break;
+ case NCI_HCI_HCP_COMMAND:
+ nci_hci_cmd_received(ndev, pipe, instruction, skb);
+ break;
+ case NCI_HCI_HCP_EVENT:
+ nci_hci_event_received(ndev, pipe, instruction, skb);
+ break;
+ default:
+ pr_err("UNKNOWN MSG Type %d, instruction=%d\n",
+ type, instruction);
+ kfree_skb(skb);
+ break;
+ }
+
+ nci_req_complete(ndev, 0);
+}
+
+static void nci_hci_msg_rx_work(struct work_struct *work)
+{
+ struct nci_hci_dev *hdev =
+ container_of(work, struct nci_hci_dev, msg_rx_work);
+ struct sk_buff *skb;
+ struct nci_hcp_message *message;
+ u8 pipe, type, instruction;
+
+ while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) {
+ pipe = skb->data[0];
+ skb_pull(skb, NCI_HCI_HCP_PACKET_HEADER_LEN);
+ message = (struct nci_hcp_message *)skb->data;
+ type = NCI_HCP_MSG_GET_TYPE(message->header);
+ instruction = NCI_HCP_MSG_GET_CMD(message->header);
+ skb_pull(skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
+
+ nci_hci_hcp_message_rx(hdev->ndev, pipe,
+ type, instruction, skb);
+ }
+}
+
+void nci_hci_data_received_cb(void *context,
+ struct sk_buff *skb, int err)
+{
+ struct nci_dev *ndev = (struct nci_dev *)context;
+ struct nci_hcp_packet *packet;
+ u8 pipe, type, instruction;
+ struct sk_buff *hcp_skb;
+ struct sk_buff *frag_skb;
+ int msg_len;
+
+ pr_debug("\n");
+
+ if (err) {
+ nci_req_complete(ndev, err);
+ return;
+ }
+
+ packet = (struct nci_hcp_packet *)skb->data;
+ if ((packet->header & ~NCI_HCI_FRAGMENT) == 0) {
+ skb_queue_tail(&ndev->hci_dev->rx_hcp_frags, skb);
+ return;
+ }
+
+ /* it's the last fragment. Does it need re-aggregation? */
+ if (skb_queue_len(&ndev->hci_dev->rx_hcp_frags)) {
+ pipe = packet->header & NCI_HCI_FRAGMENT;
+ skb_queue_tail(&ndev->hci_dev->rx_hcp_frags, skb);
+
+ msg_len = 0;
+ skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
+ msg_len += (frag_skb->len -
+ NCI_HCI_HCP_PACKET_HEADER_LEN);
+ }
+
+ hcp_skb = nfc_alloc_recv_skb(NCI_HCI_HCP_PACKET_HEADER_LEN +
+ msg_len, GFP_KERNEL);
+ if (!hcp_skb) {
+ nci_req_complete(ndev, -ENOMEM);
+ return;
+ }
+
+ *skb_put(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN) = pipe;
+
+ skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
+ msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
+ memcpy(skb_put(hcp_skb, msg_len), frag_skb->data +
+ NCI_HCI_HCP_PACKET_HEADER_LEN, msg_len);
+ }
+
+ skb_queue_purge(&ndev->hci_dev->rx_hcp_frags);
+ } else {
+ packet->header &= NCI_HCI_FRAGMENT;
+ hcp_skb = skb;
+ }
+
+ /* if this is a response, dispatch immediately to
+ * unblock waiting cmd context. Otherwise, enqueue to dispatch
+ * in separate context where handler can also execute command.
+ */
+ packet = (struct nci_hcp_packet *)hcp_skb->data;
+ type = NCI_HCP_MSG_GET_TYPE(packet->message.header);
+ if (type == NCI_HCI_HCP_RESPONSE) {
+ pipe = packet->header;
+ instruction = NCI_HCP_MSG_GET_CMD(packet->message.header);
+ skb_pull(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN +
+ NCI_HCI_HCP_MESSAGE_HEADER_LEN);
+ nci_hci_hcp_message_rx(ndev, pipe, type, instruction, hcp_skb);
+ } else {
+ skb_queue_tail(&ndev->hci_dev->msg_rx_queue, hcp_skb);
+ schedule_work(&ndev->hci_dev->msg_rx_work);
+ }
+}
+
+int nci_hci_open_pipe(struct nci_dev *ndev, u8 pipe)
+{
+ struct nci_data data;
+ struct nci_conn_info *conn_info;
+
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info)
+ return -EPROTO;
+
+ data.conn_id = conn_info->conn_id;
+ data.pipe = pipe;
+ data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND,
+ NCI_HCI_ANY_OPEN_PIPE);
+ data.data = NULL;
+ data.data_len = 0;
+
+ return nci_request(ndev, nci_hci_send_data_req,
+ (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+}
+EXPORT_SYMBOL(nci_hci_open_pipe);
+
+int nci_hci_set_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ const u8 *param, size_t param_len)
+{
+ struct nci_conn_info *conn_info;
+ struct nci_data data;
+ int r;
+ u8 *tmp;
+ u8 pipe = ndev->hci_dev->gate2pipe[gate];
+
+ pr_debug("idx=%d to gate %d\n", idx, gate);
+
+ if (pipe == NCI_HCI_INVALID_PIPE)
+ return -EADDRNOTAVAIL;
+
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info)
+ return -EPROTO;
+
+ tmp = kmalloc(1 + param_len, GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ *tmp = idx;
+ memcpy(tmp + 1, param, param_len);
+
+ data.conn_id = conn_info->conn_id;
+ data.pipe = pipe;
+ data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND,
+ NCI_HCI_ANY_SET_PARAMETER);
+ data.data = tmp;
+ data.data_len = param_len + 1;
+
+ r = nci_request(ndev, nci_hci_send_data_req,
+ (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+
+ kfree(tmp);
+ return r;
+}
+EXPORT_SYMBOL(nci_hci_set_param);
+
+int nci_hci_get_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ struct sk_buff **skb)
+{
+ struct nci_conn_info *conn_info;
+ struct nci_data data;
+ int r;
+ u8 pipe = ndev->hci_dev->gate2pipe[gate];
+
+ pr_debug("idx=%d to gate %d\n", idx, gate);
+
+ if (pipe == NCI_HCI_INVALID_PIPE)
+ return -EADDRNOTAVAIL;
+
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info)
+ return -EPROTO;
+
+ data.conn_id = conn_info->conn_id;
+ data.pipe = pipe;
+ data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND,
+ NCI_HCI_ANY_GET_PARAMETER);
+ data.data = &idx;
+ data.data_len = 1;
+
+ r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+
+ if (r == NCI_STATUS_OK)
+ *skb = conn_info->rx_skb;
+
+ return r;
+}
+EXPORT_SYMBOL(nci_hci_get_param);
+
+int nci_hci_connect_gate(struct nci_dev *ndev,
+ u8 dest_host, u8 dest_gate, u8 pipe)
+{
+ int r;
+
+ if (pipe == NCI_HCI_DO_NOT_OPEN_PIPE)
+ return 0;
+
+ if (ndev->hci_dev->gate2pipe[dest_gate] != NCI_HCI_INVALID_PIPE)
+ return -EADDRINUSE;
+
+ if (pipe != NCI_HCI_INVALID_PIPE)
+ goto open_pipe;
+
+ switch (dest_gate) {
+ case NCI_HCI_LINK_MGMT_GATE:
+ pipe = NCI_HCI_LINK_MGMT_PIPE;
+ break;
+ case NCI_HCI_ADMIN_GATE:
+ pipe = NCI_HCI_ADMIN_PIPE;
+ break;
+ }
+
+open_pipe:
+ r = nci_hci_open_pipe(ndev, pipe);
+ if (r < 0)
+ return r;
+
+ ndev->hci_dev->pipes[pipe].gate = dest_gate;
+ ndev->hci_dev->pipes[pipe].host = dest_host;
+ ndev->hci_dev->gate2pipe[dest_gate] = pipe;
+
+ return 0;
+}
+EXPORT_SYMBOL(nci_hci_connect_gate);
+
+static int nci_hci_dev_connect_gates(struct nci_dev *ndev,
+ u8 gate_count,
+ struct nci_hci_gate *gates)
+{
+ int r;
+
+ while (gate_count--) {
+ r = nci_hci_connect_gate(ndev, gates->dest_host,
+ gates->gate, gates->pipe);
+ if (r < 0)
+ return r;
+ gates++;
+ }
+
+ return 0;
+}
+
+int nci_hci_dev_session_init(struct nci_dev *ndev)
+{
+ struct nci_conn_info *conn_info;
+ struct sk_buff *skb;
+ int r;
+
+ ndev->hci_dev->count_pipes = 0;
+ ndev->hci_dev->expected_pipes = 0;
+
+ conn_info = ndev->hci_dev->conn_info;
+ if (!conn_info)
+ return -EPROTO;
+
+ conn_info->data_exchange_cb = nci_hci_data_received_cb;
+ conn_info->data_exchange_cb_context = ndev;
+
+ nci_hci_reset_pipes(ndev->hci_dev);
+
+ if (ndev->hci_dev->init_data.gates[0].gate != NCI_HCI_ADMIN_GATE)
+ return -EPROTO;
+
+ r = nci_hci_connect_gate(ndev,
+ ndev->hci_dev->init_data.gates[0].dest_host,
+ ndev->hci_dev->init_data.gates[0].gate,
+ ndev->hci_dev->init_data.gates[0].pipe);
+ if (r < 0)
+ goto exit;
+
+ r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE,
+ NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY, &skb);
+ if (r < 0)
+ goto exit;
+
+ if (skb->len &&
+ skb->len == strlen(ndev->hci_dev->init_data.session_id) &&
+ memcmp(ndev->hci_dev->init_data.session_id,
+ skb->data, skb->len) == 0 &&
+ ndev->ops->hci_load_session) {
+ /* Restore gate<->pipe table from some proprietary location. */
+ r = ndev->ops->hci_load_session(ndev);
+ if (r < 0)
+ goto exit;
+ } else {
+ r = nci_hci_dev_connect_gates(ndev,
+ ndev->hci_dev->init_data.gate_count,
+ ndev->hci_dev->init_data.gates);
+ if (r < 0)
+ goto exit;
+
+ r = nci_hci_set_param(ndev, NCI_HCI_ADMIN_GATE,
+ NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY,
+ ndev->hci_dev->init_data.session_id,
+ strlen(ndev->hci_dev->init_data.session_id));
+ }
+ if (r == 0)
+ goto exit;
+
+exit:
+ kfree_skb(skb);
+
+ return r;
+}
+EXPORT_SYMBOL(nci_hci_dev_session_init);
+
+struct nci_hci_dev *nci_hci_allocate(struct nci_dev *ndev)
+{
+ struct nci_hci_dev *hdev;
+
+ hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
+ if (!hdev)
+ return NULL;
+
+ skb_queue_head_init(&hdev->rx_hcp_frags);
+ INIT_WORK(&hdev->msg_rx_work, nci_hci_msg_rx_work);
+ skb_queue_head_init(&hdev->msg_rx_queue);
+ hdev->ndev = ndev;
+
+ return hdev;
+}
diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index 22e453cb787d..3218071072ac 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -43,6 +43,7 @@ static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
struct sk_buff *skb)
{
struct nci_core_conn_credit_ntf *ntf = (void *) skb->data;
+ struct nci_conn_info *conn_info;
int i;
pr_debug("num_entries %d\n", ntf->num_entries);
@@ -59,11 +60,13 @@ static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
i, ntf->conn_entries[i].conn_id,
ntf->conn_entries[i].credits);
- if (ntf->conn_entries[i].conn_id == NCI_STATIC_RF_CONN_ID) {
- /* found static rf connection */
- atomic_add(ntf->conn_entries[i].credits,
- &ndev->credits_cnt);
- }
+ conn_info = nci_get_conn_info_by_conn_id(ndev,
+ ntf->conn_entries[i].conn_id);
+ if (!conn_info)
+ return;
+
+ atomic_add(ntf->conn_entries[i].credits,
+ &conn_info->credits_cnt);
}
/* trigger the next tx */
@@ -96,7 +99,7 @@ static void nci_core_conn_intf_error_ntf_packet(struct nci_dev *ndev,
/* complete the data exchange transaction, if exists */
if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
- nci_data_exchange_complete(ndev, NULL, -EIO);
+ nci_data_exchange_complete(ndev, NULL, ntf->conn_id, -EIO);
}
static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
@@ -513,6 +516,7 @@ static int nci_store_general_bytes_nfc_dep(struct nci_dev *ndev,
static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
struct sk_buff *skb)
{
+ struct nci_conn_info *conn_info;
struct nci_rf_intf_activated_ntf ntf;
__u8 *data = skb->data;
int err = NCI_STATUS_OK;
@@ -537,6 +541,13 @@ static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
pr_debug("rf_tech_specific_params_len %d\n",
ntf.rf_tech_specific_params_len);
+ /* If this contains a value of 0x00 (NFCEE Direct RF
+ * Interface) then all following parameters SHALL contain a
+ * value of 0 and SHALL be ignored.
+ */
+ if (ntf.rf_interface == NCI_RF_INTERFACE_NFCEE_DIRECT)
+ goto listen;
+
if (ntf.rf_tech_specific_params_len > 0) {
switch (ntf.activation_rf_tech_and_mode) {
case NCI_NFC_A_PASSIVE_POLL_MODE:
@@ -614,11 +625,16 @@ static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
exit:
if (err == NCI_STATUS_OK) {
- ndev->max_data_pkt_payload_size = ntf.max_data_pkt_payload_size;
- ndev->initial_num_credits = ntf.initial_num_credits;
+ conn_info = ndev->rf_conn_info;
+ if (!conn_info)
+ return;
+
+ conn_info->max_pkt_payload_len = ntf.max_data_pkt_payload_size;
+ conn_info->initial_num_credits = ntf.initial_num_credits;
/* set the available credits to initial value */
- atomic_set(&ndev->credits_cnt, ndev->initial_num_credits);
+ atomic_set(&conn_info->credits_cnt,
+ conn_info->initial_num_credits);
/* store general bytes to be reported later in dep_link_up */
if (ntf.rf_interface == NCI_RF_INTERFACE_NFC_DEP) {
@@ -643,6 +659,7 @@ exit:
nci_req_complete(ndev, err);
}
} else {
+listen:
/* Listen mode */
atomic_set(&ndev->state, NCI_LISTEN_ACTIVE);
if (err == NCI_STATUS_OK &&
@@ -661,10 +678,15 @@ exit:
static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
struct sk_buff *skb)
{
+ struct nci_conn_info *conn_info;
struct nci_rf_deactivate_ntf *ntf = (void *) skb->data;
pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason);
+ conn_info = ndev->rf_conn_info;
+ if (!conn_info)
+ return;
+
/* drop tx data queue */
skb_queue_purge(&ndev->tx_q);
@@ -676,7 +698,8 @@ static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
/* complete the data exchange transaction, if exists */
if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
- nci_data_exchange_complete(ndev, NULL, -EIO);
+ nci_data_exchange_complete(ndev, NULL, NCI_STATIC_RF_CONN_ID,
+ -EIO);
switch (ntf->type) {
case NCI_DEACTIVATE_TYPE_IDLE_MODE:
@@ -696,6 +719,32 @@ static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
nci_req_complete(ndev, NCI_STATUS_OK);
}
+static void nci_nfcee_discover_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ u8 status = NCI_STATUS_OK;
+ struct nci_nfcee_discover_ntf *nfcee_ntf =
+ (struct nci_nfcee_discover_ntf *)skb->data;
+
+ pr_debug("\n");
+
+ /* NFCForum NCI 9.2.1 HCI Network Specific Handling
+ * If the NFCC supports the HCI Network, it SHALL return one,
+ * and only one, NFCEE_DISCOVER_NTF with a Protocol type of
+ * “HCI Access”, even if the HCI Network contains multiple NFCEEs.
+ */
+ ndev->hci_dev->nfcee_id = nfcee_ntf->nfcee_id;
+ ndev->cur_id = nfcee_ntf->nfcee_id;
+
+ nci_req_complete(ndev, status);
+}
+
+static void nci_nfcee_action_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ pr_debug("\n");
+}
+
void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
__u16 ntf_opcode = nci_opcode(skb->data);
@@ -734,6 +783,14 @@ void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
nci_rf_deactivate_ntf_packet(ndev, skb);
break;
+ case NCI_OP_NFCEE_DISCOVER_NTF:
+ nci_nfcee_discover_ntf_packet(ndev, skb);
+ break;
+
+ case NCI_OP_RF_NFCEE_ACTION_NTF:
+ nci_nfcee_action_ntf_packet(ndev, skb);
+ break;
+
default:
pr_err("unknown ntf opcode 0x%x\n", ntf_opcode);
break;
diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c
index 041de51ccdbe..02486bc2ceea 100644
--- a/net/nfc/nci/rsp.c
+++ b/net/nfc/nci/rsp.c
@@ -140,13 +140,31 @@ static void nci_rf_disc_map_rsp_packet(struct nci_dev *ndev,
static void nci_rf_disc_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
+ struct nci_conn_info *conn_info;
__u8 status = skb->data[0];
pr_debug("status 0x%x\n", status);
- if (status == NCI_STATUS_OK)
+ if (status == NCI_STATUS_OK) {
atomic_set(&ndev->state, NCI_DISCOVERY);
+ conn_info = ndev->rf_conn_info;
+ if (!conn_info) {
+ conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
+ sizeof(struct nci_conn_info),
+ GFP_KERNEL);
+ if (!conn_info) {
+ status = NCI_STATUS_REJECTED;
+ goto exit;
+ }
+ conn_info->conn_id = NCI_STATIC_RF_CONN_ID;
+ INIT_LIST_HEAD(&conn_info->list);
+ list_add(&conn_info->list, &ndev->conn_info_list);
+ ndev->rf_conn_info = conn_info;
+ }
+ }
+
+exit:
nci_req_complete(ndev, status);
}
@@ -178,6 +196,90 @@ static void nci_rf_deactivate_rsp_packet(struct nci_dev *ndev,
}
}
+static void nci_nfcee_discover_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_nfcee_discover_rsp *discover_rsp;
+
+ if (skb->len != 2) {
+ nci_req_complete(ndev, NCI_STATUS_NFCEE_PROTOCOL_ERROR);
+ return;
+ }
+
+ discover_rsp = (struct nci_nfcee_discover_rsp *)skb->data;
+
+ if (discover_rsp->status != NCI_STATUS_OK ||
+ discover_rsp->num_nfcee == 0)
+ nci_req_complete(ndev, discover_rsp->status);
+}
+
+static void nci_nfcee_mode_set_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ __u8 status = skb->data[0];
+
+ pr_debug("status 0x%x\n", status);
+ nci_req_complete(ndev, status);
+}
+
+static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ __u8 status = skb->data[0];
+ struct nci_conn_info *conn_info;
+ struct nci_core_conn_create_rsp *rsp;
+
+ pr_debug("status 0x%x\n", status);
+
+ if (status == NCI_STATUS_OK) {
+ rsp = (struct nci_core_conn_create_rsp *)skb->data;
+
+ conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
+ sizeof(*conn_info), GFP_KERNEL);
+ if (!conn_info) {
+ status = NCI_STATUS_REJECTED;
+ goto exit;
+ }
+
+ conn_info->id = ndev->cur_id;
+ conn_info->conn_id = rsp->conn_id;
+
+ /* Note: data_exchange_cb and data_exchange_cb_context need to
+ * be specify out of nci_core_conn_create_rsp_packet
+ */
+
+ INIT_LIST_HEAD(&conn_info->list);
+ list_add(&conn_info->list, &ndev->conn_info_list);
+
+ if (ndev->cur_id == ndev->hci_dev->nfcee_id)
+ ndev->hci_dev->conn_info = conn_info;
+
+ conn_info->conn_id = rsp->conn_id;
+ conn_info->max_pkt_payload_len = rsp->max_ctrl_pkt_payload_len;
+ atomic_set(&conn_info->credits_cnt, rsp->credits_cnt);
+ }
+
+exit:
+ nci_req_complete(ndev, status);
+}
+
+static void nci_core_conn_close_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_conn_info *conn_info;
+ __u8 status = skb->data[0];
+
+ pr_debug("status 0x%x\n", status);
+ if (status == NCI_STATUS_OK) {
+ conn_info = nci_get_conn_info_by_conn_id(ndev, ndev->cur_id);
+ if (conn_info) {
+ list_del(&conn_info->list);
+ devm_kfree(&ndev->nfc_dev->dev, conn_info);
+ }
+ }
+ nci_req_complete(ndev, status);
+}
+
void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
__u16 rsp_opcode = nci_opcode(skb->data);
@@ -207,6 +309,14 @@ void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
nci_core_set_config_rsp_packet(ndev, skb);
break;
+ case NCI_OP_CORE_CONN_CREATE_RSP:
+ nci_core_conn_create_rsp_packet(ndev, skb);
+ break;
+
+ case NCI_OP_CORE_CONN_CLOSE_RSP:
+ nci_core_conn_close_rsp_packet(ndev, skb);
+ break;
+
case NCI_OP_RF_DISCOVER_MAP_RSP:
nci_rf_disc_map_rsp_packet(ndev, skb);
break;
@@ -223,6 +333,14 @@ void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
nci_rf_deactivate_rsp_packet(ndev, skb);
break;
+ case NCI_OP_NFCEE_DISCOVER_RSP:
+ nci_nfcee_discover_rsp_packet(ndev, skb);
+ break;
+
+ case NCI_OP_NFCEE_MODE_SET_RSP:
+ nci_nfcee_mode_set_rsp_packet(ndev, skb);
+ break;
+
default:
pr_err("unknown rsp opcode 0x%x\n", rsp_opcode);
break;
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 44989fc8cddf..14a2d11581da 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -102,7 +102,8 @@ static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
goto nla_put_failure;
}
- return genlmsg_end(msg, hdr);
+ genlmsg_end(msg, hdr);
+ return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
@@ -496,6 +497,53 @@ free_msg:
return -EMSGSIZE;
}
+int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
+ struct nfc_evt_transaction *evt_transaction)
+{
+ struct nfc_se *se;
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+ NFC_EVENT_SE_TRANSACTION);
+ if (!hdr)
+ goto free_msg;
+
+ se = nfc_find_se(dev, se_idx);
+ if (!se)
+ goto free_msg;
+
+ if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+ nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
+ nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) ||
+ nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len,
+ evt_transaction->aid) ||
+ nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len,
+ evt_transaction->params))
+ goto nla_put_failure;
+
+ /* evt_transaction is no more used */
+ devm_kfree(&dev->dev, evt_transaction);
+
+ genlmsg_end(msg, hdr);
+
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+free_msg:
+ /* evt_transaction is no more used */
+ devm_kfree(&dev->dev, evt_transaction);
+ nlmsg_free(msg);
+ return -EMSGSIZE;
+}
+
static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
u32 portid, u32 seq,
struct netlink_callback *cb,
@@ -518,7 +566,8 @@ static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
goto nla_put_failure;
- return genlmsg_end(msg, hdr);
+ genlmsg_end(msg, hdr);
+ return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
@@ -908,7 +957,8 @@ static int nfc_genl_send_params(struct sk_buff *msg,
nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
goto nla_put_failure;
- return genlmsg_end(msg, hdr);
+ genlmsg_end(msg, hdr);
+ return 0;
nla_put_failure:
@@ -1247,8 +1297,7 @@ static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
goto nla_put_failure;
- if (genlmsg_end(msg, hdr) < 0)
- goto nla_put_failure;
+ genlmsg_end(msg, hdr);
}
return 0;
diff --git a/net/nfc/nfc.h b/net/nfc/nfc.h
index 88d60064890e..a8ce80b47720 100644
--- a/net/nfc/nfc.h
+++ b/net/nfc/nfc.h
@@ -100,6 +100,8 @@ int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list);
int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type);
int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx);
+int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
+ struct nfc_evt_transaction *evt_transaction);
struct nfc_dev *nfc_get_device(unsigned int idx);