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author | 2014-12-02 21:27:50 +0100 | |
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committer | 2014-12-02 22:47:37 +0100 | |
commit | 3682f49f32051765ed6eb77fc882f0458f7d44c3 (patch) | |
tree | 85e9879918bd3f8498bc265e6885550f1a606aa1 /net/nfc/netlink.c | |
parent | NFC: nci: Add support for different NCI_DEACTIVATE_TYPE (diff) | |
download | linux-3682f49f32051765ed6eb77fc882f0458f7d44c3.tar.gz linux-3682f49f32051765ed6eb77fc882f0458f7d44c3.tar.bz2 linux-3682f49f32051765ed6eb77fc882f0458f7d44c3.zip |
NFC: netlink: Add new netlink command NFC_CMD_ACTIVATE_TARGET
Some tag might get deactivated after some read or write tentative.
This may happen for example with Mifare Ultralight C tag when trying
to read the last 4 blocks (starting block 0x2c) configured as write
only.
NFC_CMD_ACTIVATE_TARGET will try to reselect the tag in order to
detect if it got remove from the field or if it is still present.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'net/nfc/netlink.c')
-rw-r--r-- | net/nfc/netlink.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c index 43cb1c17e267..95818314aea6 100644 --- a/net/nfc/netlink.c +++ b/net/nfc/netlink.c @@ -810,6 +810,31 @@ out: return rc; } +static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info) +{ + struct nfc_dev *dev; + u32 device_idx, target_idx, protocol; + int rc; + + if (!info->attrs[NFC_ATTR_DEVICE_INDEX]) + return -EINVAL; + + device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); + + dev = nfc_get_device(device_idx); + if (!dev) + return -ENODEV; + + target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]); + protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); + + nfc_deactivate_target(dev, target_idx); + rc = nfc_activate_target(dev, target_idx, protocol); + + nfc_put_device(dev); + return 0; +} + static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; @@ -1455,6 +1480,11 @@ static const struct genl_ops nfc_genl_ops[] = { .doit = nfc_genl_se_io, .policy = nfc_genl_policy, }, + { + .cmd = NFC_CMD_ACTIVATE_TARGET, + .doit = nfc_genl_activate_target, + .policy = nfc_genl_policy, + }, }; |