NFC: Export new attributes sensb_res and sensf_res

Export new attributes sensb_res for tech B and sensf_res
for tech F in the target info (returned as a response to
NFC_CMD_GET_TARGET).
The max size of the attributes nfcid1, sensb_res and sensf_res
is exported to user space though include/linux/nfc.

Signed-off-by: Ilan Elias <ilane@ti.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/include/linux/nfc.h b/include/linux/nfc.h
index 01d4e5d..b4999ab 100644 (file)
--- a/include/linux/nfc.h
+++ b/include/linux/nfc.h
@@ -89,6 +89,8 @@ enum nfc_commands {
  * @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_TARGET_SENSB_RES: NFC-B targets extra information, max 12 bytes
+ * @NFC_ATTR_TARGET_SENSF_RES: NFC-F targets extra information, max 18 bytes
  * @NFC_ATTR_COMM_MODE: Passive or active mode
  * @NFC_ATTR_RF_MODE: Initiator or target
  */
@@ -101,6 +103,8 @@ enum nfc_attrs {
        NFC_ATTR_TARGET_SENS_RES,
        NFC_ATTR_TARGET_SEL_RES,
        NFC_ATTR_TARGET_NFCID1,
+       NFC_ATTR_TARGET_SENSB_RES,
+       NFC_ATTR_TARGET_SENSF_RES,
        NFC_ATTR_COMM_MODE,
        NFC_ATTR_RF_MODE,
 /* private: internal use only */
@@ -109,6 +113,9 @@ enum nfc_attrs {
 #define NFC_ATTR_MAX (__NFC_ATTR_AFTER_LAST - 1)
 
 #define NFC_DEVICE_NAME_MAXSIZE 8
+#define NFC_NFCID1_MAXSIZE 10
+#define NFC_SENSB_RES_MAXSIZE 12
+#define NFC_SENSF_RES_MAXSIZE 18
 
 /* NFC protocols */
 #define NFC_PROTO_JEWEL                1

diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h
index 2be95e2..34f5ed2 100644 (file)
--- a/include/net/nfc/nci.h
+++ b/include/net/nfc/nci.h
@@ -275,11 +275,27 @@ struct rf_tech_specific_params_nfca_poll {
        __u8    sel_res;
 } __packed;
 
+struct rf_tech_specific_params_nfcb_poll {
+       __u8    sensb_res_len;
+       __u8    sensb_res[12];  /* 11 or 12 Bytes */
+} __packed;
+
+struct rf_tech_specific_params_nfcf_poll {
+       __u8    bit_rate;
+       __u8    sensf_res_len;
+       __u8    sensf_res[18];  /* 16 or 18 Bytes */
+} __packed;
+
 struct activation_params_nfca_poll_iso_dep {
        __u8    rats_res_len;
        __u8    rats_res[20];
 };
 
+struct activation_params_nfcb_poll_iso_dep {
+       __u8    attrib_res_len;
+       __u8    attrib_res[50];
+};
+
 struct nci_rf_intf_activated_ntf {
        __u8    rf_discovery_id;
        __u8    rf_interface;
@@ -291,6 +307,8 @@ struct nci_rf_intf_activated_ntf {
 
        union {
                struct rf_tech_specific_params_nfca_poll nfca_poll;
+               struct rf_tech_specific_params_nfcb_poll nfcb_poll;
+               struct rf_tech_specific_params_nfcf_poll nfcf_poll;
        } rf_tech_specific_params;
 
        __u8    data_exch_rf_tech_and_mode;
@@ -300,6 +318,7 @@ struct nci_rf_intf_activated_ntf {
 
        union {
                struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
+               struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
        } activation_params;
 
 } __packed;

diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index 8696b77..819530d 100644 (file)
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -24,6 +24,7 @@
 #ifndef __NET_NFC_H
 #define __NET_NFC_H
 
+#include <linux/nfc.h>
 #include <linux/device.h>
 #include <linux/skbuff.h>
 
@@ -65,7 +66,6 @@ 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;
@@ -73,7 +73,11 @@ struct nfc_target {
        u16 sens_res;
        u8 sel_res;
        u8 nfcid1_len;
-       u8 nfcid1[NFC_MAX_NFCID1_LEN];
+       u8 nfcid1[NFC_NFCID1_MAXSIZE];
+       u8 sensb_res_len;
+       u8 sensb_res[NFC_SENSB_RES_MAXSIZE];
+       u8 sensf_res_len;
+       u8 sensf_res[NFC_SENSF_RES_MAXSIZE];
 };
 
 struct nfc_genl_data {

diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index 10682bf..a88be91 100644 (file)
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -115,15 +115,53 @@ static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
        return data;
 }
 
+static __u8 *nci_extract_rf_params_nfcb_passive_poll(struct nci_dev *ndev,
+                       struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
+{
+       struct rf_tech_specific_params_nfcb_poll *nfcb_poll;
+
+       nfcb_poll = &ntf->rf_tech_specific_params.nfcb_poll;
+
+       nfcb_poll->sensb_res_len = *data++;
+
+       pr_debug("sensb_res_len %d\n", nfcb_poll->sensb_res_len);
+
+       memcpy(nfcb_poll->sensb_res, data, nfcb_poll->sensb_res_len);
+       data += nfcb_poll->sensb_res_len;
+
+       return data;
+}
+
+static __u8 *nci_extract_rf_params_nfcf_passive_poll(struct nci_dev *ndev,
+                       struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
+{
+       struct rf_tech_specific_params_nfcf_poll *nfcf_poll;
+
+       nfcf_poll = &ntf->rf_tech_specific_params.nfcf_poll;
+
+       nfcf_poll->bit_rate = *data++;
+       nfcf_poll->sensf_res_len = *data++;
+
+       pr_debug("bit_rate %d, sensf_res_len %d\n",
+               nfcf_poll->bit_rate, nfcf_poll->sensf_res_len);
+
+       memcpy(nfcf_poll->sensf_res, data, nfcf_poll->sensf_res_len);
+       data += nfcf_poll->sensf_res_len;
+
+       return data;
+}
+
 static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
                        struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
 {
        struct activation_params_nfca_poll_iso_dep *nfca_poll;
+       struct activation_params_nfcb_poll_iso_dep *nfcb_poll;
 
        switch (ntf->activation_rf_tech_and_mode) {
        case NCI_NFC_A_PASSIVE_POLL_MODE:
                nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
                nfca_poll->rats_res_len = *data++;
+               pr_debug("rats_res_len %d\n", nfca_poll->rats_res_len);
                if (nfca_poll->rats_res_len > 0) {
                        memcpy(nfca_poll->rats_res,
                                data,
@@ -131,6 +169,18 @@ static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
                }
                break;
 
+       case NCI_NFC_B_PASSIVE_POLL_MODE:
+               nfcb_poll = &ntf->activation_params.nfcb_poll_iso_dep;
+               nfcb_poll->attrib_res_len = *data++;
+               pr_debug("attrib_res_len %d\n",
+                       nfcb_poll->attrib_res_len);
+               if (nfcb_poll->attrib_res_len > 0) {
+                       memcpy(nfcb_poll->attrib_res,
+                               data,
+                               nfcb_poll->attrib_res_len);
+               }
+               break;
+
        default:
                pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
                       ntf->activation_rf_tech_and_mode);
@@ -145,21 +195,14 @@ static void nci_target_found(struct nci_dev *ndev,
 {
        struct nfc_target nfc_tgt;
 
-       if (ntf->rf_protocol == NCI_RF_PROTOCOL_T2T)    /* T2T MifareUL */
+       memset(&nfc_tgt, 0, sizeof(nfc_tgt));
+
+       if (ntf->rf_protocol == NCI_RF_PROTOCOL_T2T)
                nfc_tgt.supported_protocols = NFC_PROTO_MIFARE_MASK;
-       else if (ntf->rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)   /* 4A */
+       else if (ntf->rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)
                nfc_tgt.supported_protocols = NFC_PROTO_ISO14443_MASK;
-       else
-               nfc_tgt.supported_protocols = 0;
-
-       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);
-       }
+       else if (ntf->rf_protocol == NCI_RF_PROTOCOL_T3T)
+               nfc_tgt.supported_protocols = NFC_PROTO_FELICA_MASK;
 
        if (!(nfc_tgt.supported_protocols & ndev->poll_prots)) {
                pr_debug("the target found does not have the desired protocol\n");
@@ -169,6 +212,38 @@ static void nci_target_found(struct nci_dev *ndev,
        pr_debug("new target found,  supported_protocols 0x%x\n",
                 nfc_tgt.supported_protocols);
 
+       if (ntf->activation_rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE) {
+               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);
+               }
+       } else if (ntf->activation_rf_tech_and_mode ==
+                                               NCI_NFC_B_PASSIVE_POLL_MODE) {
+               nfc_tgt.sensb_res_len =
+                       ntf->rf_tech_specific_params.nfcb_poll.sensb_res_len;
+               if (nfc_tgt.sensb_res_len > 0) {
+                       memcpy(nfc_tgt.sensb_res,
+                              ntf->rf_tech_specific_params.nfcb_poll.sensb_res,
+                              nfc_tgt.sensb_res_len);
+               }
+       } else if (ntf->activation_rf_tech_and_mode ==
+                                               NCI_NFC_F_PASSIVE_POLL_MODE) {
+               nfc_tgt.sensf_res_len =
+                       ntf->rf_tech_specific_params.nfcf_poll.sensf_res_len;
+               if (nfc_tgt.sensf_res_len > 0) {
+                       memcpy(nfc_tgt.sensf_res,
+                              ntf->rf_tech_specific_params.nfcf_poll.sensf_res,
+                              nfc_tgt.sensf_res_len);
+               }
+       }
+
        ndev->target_available_prots = nfc_tgt.supported_protocols;
        ndev->max_data_pkt_payload_size = ntf->max_data_pkt_payload_size;
        ndev->initial_num_credits = ntf->initial_num_credits;
@@ -215,6 +290,16 @@ static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
                                &ntf, data);
                        break;
 
+               case NCI_NFC_B_PASSIVE_POLL_MODE:
+                       data = nci_extract_rf_params_nfcb_passive_poll(ndev,
+                               &ntf, data);
+                       break;
+
+               case NCI_NFC_F_PASSIVE_POLL_MODE:
+                       data = nci_extract_rf_params_nfcf_passive_poll(ndev,
+                               &ntf, data);
+                       break;
+
                default:
                        pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
                               ntf.activation_rf_tech_and_mode);

diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 6989dfa..07f0348 100644 (file)
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -70,6 +70,12 @@ static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
        if (target->nfcid1_len > 0)
                NLA_PUT(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len,
                                target->nfcid1);
+       if (target->sensb_res_len > 0)
+               NLA_PUT(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len,
+                               target->sensb_res);
+       if (target->sensf_res_len > 0)
+               NLA_PUT(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len,
+                               target->sensf_res);
 
        return genlmsg_end(msg, hdr);