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authorDavid S. Miller <davem@davemloft.net>2016-05-11 20:00:54 -0400
committerDavid S. Miller <davem@davemloft.net>2016-05-11 20:00:54 -0400
commit631ad4a3e74d998b089e75983c0c5bf893c94b62 (patch)
treec66cf156a5a6a3d168dfbcfddee480d059a1c1ec /net
parent6a47a570321fdcd2b6fc9e6537b2a3650d0fd04b (diff)
parentb31d5103c33280738188c51e226224dff4401c7b (diff)
downloadop-kernel-dev-631ad4a3e74d998b089e75983c0c5bf893c94b62.zip
op-kernel-dev-631ad4a3e74d998b089e75983c0c5bf893c94b62.tar.gz
Merge tag 'nfc-next-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next
Samuel Ortiz says: ==================== NFC 4.7 pull request This is the first NFC pull request for 4.7. With this one we mainly have: - Support for NXP's pn532 NFC chipset. The pn532 is based on the same microcontroller as the pn533, but it talks to the host through i2c instead of USB. By separating the pn533 driver into core and PHY parts, we can not add the i2c layer and support the pn532 chipset. - Support for NCI's loopback mode. This is a testing mode where each packet received by the NFCC is sent back to the DH, allowing the host to test that the controller can receive and send data. - A few ACPI related fixes for the STMicro drivers, in order to match the device tree naming scheme. - A bunch of cleanups for the st-nci and the st21nfca STMicro drivers. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/nfc/nci/core.c117
-rw-r--r--net/nfc/nci/ntf.c2
-rw-r--r--net/nfc/nci/rsp.c23
3 files changed, 123 insertions, 19 deletions
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index fbb7a2b..61fff42 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -64,18 +64,26 @@ struct nci_conn_info *nci_get_conn_info_by_conn_id(struct nci_dev *ndev,
return NULL;
}
-int nci_get_conn_info_by_id(struct nci_dev *ndev, u8 id)
+int nci_get_conn_info_by_dest_type_params(struct nci_dev *ndev, u8 dest_type,
+ struct dest_spec_params *params)
{
struct nci_conn_info *conn_info;
list_for_each_entry(conn_info, &ndev->conn_info_list, list) {
- if (conn_info->id == id)
- return conn_info->conn_id;
+ if (conn_info->dest_type == dest_type) {
+ if (!params)
+ return conn_info->conn_id;
+ if (conn_info) {
+ if (params->id == conn_info->dest_params->id &&
+ params->protocol == conn_info->dest_params->protocol)
+ return conn_info->conn_id;
+ }
+ }
}
return -EINVAL;
}
-EXPORT_SYMBOL(nci_get_conn_info_by_id);
+EXPORT_SYMBOL(nci_get_conn_info_by_dest_type_params);
/* ---- NCI requests ---- */
@@ -392,6 +400,83 @@ int nci_core_init(struct nci_dev *ndev)
}
EXPORT_SYMBOL(nci_core_init);
+struct nci_loopback_data {
+ u8 conn_id;
+ struct sk_buff *data;
+};
+
+static void nci_send_data_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct nci_loopback_data *data = (struct nci_loopback_data *)opt;
+
+ nci_send_data(ndev, data->conn_id, data->data);
+}
+
+static void nci_nfcc_loopback_cb(void *context, struct sk_buff *skb, int err)
+{
+ struct nci_dev *ndev = (struct nci_dev *)context;
+ struct nci_conn_info *conn_info;
+
+ conn_info = nci_get_conn_info_by_conn_id(ndev, ndev->cur_conn_id);
+ if (!conn_info) {
+ nci_req_complete(ndev, NCI_STATUS_REJECTED);
+ return;
+ }
+
+ conn_info->rx_skb = skb;
+
+ nci_req_complete(ndev, NCI_STATUS_OK);
+}
+
+int nci_nfcc_loopback(struct nci_dev *ndev, void *data, size_t data_len,
+ struct sk_buff **resp)
+{
+ int r;
+ struct nci_loopback_data loopback_data;
+ struct nci_conn_info *conn_info;
+ struct sk_buff *skb;
+ int conn_id = nci_get_conn_info_by_dest_type_params(ndev,
+ NCI_DESTINATION_NFCC_LOOPBACK, NULL);
+
+ if (conn_id < 0) {
+ r = nci_core_conn_create(ndev, NCI_DESTINATION_NFCC_LOOPBACK,
+ 0, 0, NULL);
+ if (r != NCI_STATUS_OK)
+ return r;
+
+ conn_id = nci_get_conn_info_by_dest_type_params(ndev,
+ NCI_DESTINATION_NFCC_LOOPBACK,
+ NULL);
+ }
+
+ conn_info = nci_get_conn_info_by_conn_id(ndev, conn_id);
+ if (!conn_info)
+ return -EPROTO;
+
+ /* store cb and context to be used on receiving data */
+ conn_info->data_exchange_cb = nci_nfcc_loopback_cb;
+ conn_info->data_exchange_cb_context = ndev;
+
+ skb = nci_skb_alloc(ndev, NCI_DATA_HDR_SIZE + data_len, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, NCI_DATA_HDR_SIZE);
+ memcpy(skb_put(skb, data_len), data, data_len);
+
+ loopback_data.conn_id = conn_id;
+ loopback_data.data = skb;
+
+ ndev->cur_conn_id = conn_id;
+ r = nci_request(ndev, nci_send_data_req, (unsigned long)&loopback_data,
+ msecs_to_jiffies(NCI_DATA_TIMEOUT));
+ if (r == NCI_STATUS_OK && resp)
+ *resp = conn_info->rx_skb;
+
+ return r;
+}
+EXPORT_SYMBOL(nci_nfcc_loopback);
+
static int nci_open_device(struct nci_dev *ndev)
{
int rc = 0;
@@ -610,9 +695,6 @@ int nci_core_conn_create(struct nci_dev *ndev, u8 destination_type,
struct nci_core_conn_create_cmd *cmd;
struct core_conn_create_data data;
- if (!number_destination_params)
- return -EINVAL;
-
data.length = params_len + sizeof(struct nci_core_conn_create_cmd);
cmd = kzalloc(data.length, GFP_KERNEL);
if (!cmd)
@@ -620,17 +702,23 @@ int nci_core_conn_create(struct nci_dev *ndev, u8 destination_type,
cmd->destination_type = destination_type;
cmd->number_destination_params = number_destination_params;
- memcpy(cmd->params, params, params_len);
data.cmd = cmd;
- if (params->length > 0)
- ndev->cur_id = params->value[DEST_SPEC_PARAMS_ID_INDEX];
- else
- ndev->cur_id = 0;
+ if (params) {
+ memcpy(cmd->params, params, params_len);
+ if (params->length > 0)
+ memcpy(&ndev->cur_params,
+ &params->value[DEST_SPEC_PARAMS_ID_INDEX],
+ sizeof(struct dest_spec_params));
+ else
+ ndev->cur_params.id = 0;
+ } else {
+ ndev->cur_params.id = 0;
+ }
+ ndev->cur_dest_type = destination_type;
- r = __nci_request(ndev, nci_core_conn_create_req,
- (unsigned long)&data,
+ r = __nci_request(ndev, nci_core_conn_create_req, (unsigned long)&data,
msecs_to_jiffies(NCI_CMD_TIMEOUT));
kfree(cmd);
return r;
@@ -646,6 +734,7 @@ static void nci_core_conn_close_req(struct nci_dev *ndev, unsigned long opt)
int nci_core_conn_close(struct nci_dev *ndev, u8 conn_id)
{
+ ndev->cur_conn_id = conn_id;
return __nci_request(ndev, nci_core_conn_close_req, conn_id,
msecs_to_jiffies(NCI_CMD_TIMEOUT));
}
diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index 2ada2b3..1e8c1a1 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -734,7 +734,7 @@ static void nci_nfcee_discover_ntf_packet(struct nci_dev *ndev,
* “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;
+ ndev->cur_params.id = nfcee_ntf->nfcee_id;
nci_req_complete(ndev, status);
}
diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c
index 9b6eb91..e3bbf19 100644
--- a/net/nfc/nci/rsp.c
+++ b/net/nfc/nci/rsp.c
@@ -226,7 +226,7 @@ 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_conn_info *conn_info = NULL;
struct nci_core_conn_create_rsp *rsp;
pr_debug("status 0x%x\n", status);
@@ -241,7 +241,17 @@ static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
goto exit;
}
- conn_info->id = ndev->cur_id;
+ conn_info->dest_params = devm_kzalloc(&ndev->nfc_dev->dev,
+ sizeof(struct dest_spec_params),
+ GFP_KERNEL);
+ if (!conn_info->dest_params) {
+ status = NCI_STATUS_REJECTED;
+ goto free_conn_info;
+ }
+
+ conn_info->dest_type = ndev->cur_dest_type;
+ conn_info->dest_params->id = ndev->cur_params.id;
+ conn_info->dest_params->protocol = ndev->cur_params.protocol;
conn_info->conn_id = rsp->conn_id;
/* Note: data_exchange_cb and data_exchange_cb_context need to
@@ -251,7 +261,7 @@ static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
INIT_LIST_HEAD(&conn_info->list);
list_add(&conn_info->list, &ndev->conn_info_list);
- if (ndev->cur_id == ndev->hci_dev->nfcee_id)
+ if (ndev->cur_params.id == ndev->hci_dev->nfcee_id)
ndev->hci_dev->conn_info = conn_info;
conn_info->conn_id = rsp->conn_id;
@@ -259,7 +269,11 @@ static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
atomic_set(&conn_info->credits_cnt, rsp->credits_cnt);
}
+free_conn_info:
+ if (status == NCI_STATUS_REJECTED)
+ devm_kfree(&ndev->nfc_dev->dev, conn_info);
exit:
+
nci_req_complete(ndev, status);
}
@@ -271,7 +285,8 @@ static void nci_core_conn_close_rsp_packet(struct nci_dev *ndev,
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);
+ conn_info = nci_get_conn_info_by_conn_id(ndev,
+ ndev->cur_conn_id);
if (conn_info) {
list_del(&conn_info->list);
devm_kfree(&ndev->nfc_dev->dev, conn_info);
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