NFC: Add secure elements addition and removal API
This API will allow NFC drivers to add and remove the secure elements
they know about or detect. Typically this should be called (asynchronously
or not) from the driver or the host interface stack detect_se hook.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/net/nfc/core.c b/net/nfc/core.c
index a43a56d..dacadfb 100644
--- a/net/nfc/core.c
+++ b/net/nfc/core.c
@@ -760,6 +760,49 @@
}
EXPORT_SYMBOL(nfc_driver_failure);
+int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type)
+{
+ struct nfc_se *se, *n;
+
+ pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+ list_for_each_entry_safe(se, n, &dev->secure_elements, list)
+ if (se->idx == se_idx)
+ return -EALREADY;
+
+ se = kzalloc(sizeof(struct nfc_se), GFP_KERNEL);
+ if (!se)
+ return -ENOMEM;
+
+ se->idx = se_idx;
+ se->type = type;
+ se->state = NFC_SE_DISABLED;
+ INIT_LIST_HEAD(&se->list);
+
+ list_add(&se->list, &dev->secure_elements);
+
+ return 0;
+}
+EXPORT_SYMBOL(nfc_add_se);
+
+int nfc_remove_se(struct nfc_dev *dev, u32 se_idx)
+{
+ struct nfc_se *se, *n;
+
+ pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+ list_for_each_entry_safe(se, n, &dev->secure_elements, list)
+ if (se->idx == se_idx) {
+ list_del(&se->list);
+ kfree(se);
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(nfc_remove_se);
+
static void nfc_release(struct device *d)
{
struct nfc_dev *dev = to_nfc_dev(d);
@@ -856,9 +899,9 @@
dev->ops = ops;
dev->supported_protocols = supported_protocols;
- dev->active_se = NFC_SE_NONE;
dev->tx_headroom = tx_headroom;
dev->tx_tailroom = tx_tailroom;
+ INIT_LIST_HEAD(&dev->secure_elements);
nfc_genl_data_init(&dev->genl_data);