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authorChristophe Ricard <christophe.ricard@gmail.com>2014-12-02 23:27:51 +0300
committerSamuel Ortiz <sameo@linux.intel.com>2014-12-03 00:47:56 +0300
commitcd96db6fd0ac1c352e386fb2c632c455bf501e1f (patch)
tree1c8ffbb1692caaf2748cc2784d7ed0f13bedfc84 /net/nfc
parent3682f49f32051765ed6eb77fc882f0458f7d44c3 (diff)
downloadlinux-cd96db6fd0ac1c352e386fb2c632c455bf501e1f.tar.xz
NFC: Add se_io NFC operand
se_io allows to send apdu over the CLF to the embedded Secure Element. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'net/nfc')
-rw-r--r--net/nfc/netlink.c47
1 files changed, 46 insertions, 1 deletions
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 95818314aea6..44989fc8cddf 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1310,6 +1310,51 @@ static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
return 0;
}
+static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
+ u8 *apdu, size_t apdu_length,
+ se_io_cb_t cb, void *cb_context)
+{
+ struct nfc_se *se;
+ int rc;
+
+ pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+ device_lock(&dev->dev);
+
+ if (!device_is_registered(&dev->dev)) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ if (!dev->dev_up) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ if (!dev->ops->se_io) {
+ rc = -EOPNOTSUPP;
+ goto error;
+ }
+
+ se = nfc_find_se(dev, se_idx);
+ if (!se) {
+ rc = -EINVAL;
+ goto error;
+ }
+
+ if (se->state != NFC_SE_ENABLED) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ rc = dev->ops->se_io(dev, se_idx, apdu,
+ apdu_length, cb, cb_context);
+
+error:
+ device_unlock(&dev->dev);
+ return rc;
+}
+
struct se_io_ctx {
u32 dev_idx;
u32 se_idx;
@@ -1392,7 +1437,7 @@ static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
ctx->dev_idx = dev_idx;
ctx->se_idx = se_idx;
- return dev->ops->se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
+ return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
}
static const struct genl_ops nfc_genl_ops[] = {