[PATCH] NFC: Export a new attribute nfcid1 in target info

ilanelias78
2011-12-22T09:50:38Z

From: Ilan Elias <ilane@ti.com>

The nfcid1 is the NFC-A identifier.
It is exported as an attribute of the target info
(returned as a response to NFC_CMD_GET_TARGET).

Signed-off-by: Ilan Elias <ilane@ti.com>
---
include/linux/nfc.h | 2 ++
include/net/nfc/nfc.h | 3 +++
net/nfc/nci/ntf.c | 6 ++++++
net/nfc/netlink.c | 3 +++
4 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/include/linux/nfc.h b/include/linux/nfc.h
index 89fee4a..01d4e5d 100644
--- a/include/linux/nfc.h
+++ b/include/linux/nfc.h
@@ -88,6 +88,7 @@ enum nfc_commands {
* @NFC_ATTR_TARGET_SENS_RES: NFC-A targets extra information such as NFCID
* @NFC_ATTR_TARGET_SEL_RES: NFC-A targets extra information (useful if the
* target is not NFC-Forum compliant)
+ * @NFC_ATTR_TARGET_NFCID1: NFC-A targets identifier, max 10 bytes
* @NFC_ATTR_COMM_MODE: Passive or active mode
* @NFC_ATTR_RF_MODE: Initiator or target
*/
@@ -99,6 +100,7 @@ enum nfc_attrs {
NFC_ATTR_TARGET_INDEX,
NFC_ATTR_TARGET_SENS_RES,
NFC_ATTR_TARGET_SEL_RES,
+ NFC_ATTR_TARGET_NFCID1,
NFC_ATTR_COMM_MODE,
NFC_ATTR_RF_MODE,
/* private: internal use only */
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index ccfe757..8696b77 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -65,12 +65,15 @@ struct nfc_ops {

#define NFC_TARGET_IDX_ANY -1
#define NFC_MAX_GT_LEN 48
+#define NFC_MAX_NFCID1_LEN 10

struct nfc_target {
u32 idx;
u32 supported_protocols;
u16 sens_res;
u8 sel_res;
+ u8 nfcid1_len;
+ u8 nfcid1[NFC_MAX_NFCID1_LEN];
};

struct nfc_genl_data {
diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index 003846b..b2b04b8 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -137,6 +137,12 @@ static void nci_target_found(struct nci_dev *ndev,

nfc_tgt.sens_res = ntf->rf_tech_specific_params.nfca_poll.sens_res;
nfc_tgt.sel_res = ntf->rf_tech_specific_params.nfca_poll.sel_res;
+ nfc_tgt.nfcid1_len = ntf->rf_tech_specific_params.nfca_poll.nfcid1_len;
+ if (nfc_tgt.nfcid1_len > 0) {
+ memcpy(nfc_tgt.nfcid1,
+ ntf->rf_tech_specific_params.nfca_poll.nfcid1,
+ nfc_tgt.nfcid1_len);
+ }

if (!(nfc_tgt.supported_protocols & ndev->poll_prots)) {
pr_debug("the target found does not have the desired protocol\n");
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 43a1c47..6989dfa 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -67,6 +67,9 @@ static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
target->supported_protocols);
NLA_PUT_U16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res);
NLA_PUT_U8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res);
+ if (target->nfcid1_len > 0)
+ NLA_PUT(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len,
+ target->nfcid1);

return genlmsg_end(msg, hdr);

--
1.7.0.4