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authorChristophe Ricard <christophe.ricard@gmail.com>2015-02-01 22:26:12 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2015-02-02 21:50:39 +0100
commit736bb9577407d3556d81c3c3cd57581cd3ae10ea (patch)
treeab3473fc3494458a13b08e964916d71df3d69dc5 /net/nfc
parentf7f793f31378d5e83276871339c2a8374b0e8657 (diff)
downloadlinux-736bb9577407d3556d81c3c3cd57581cd3ae10ea.tar.bz2
NFC: nci: Support logical connections management
In order to communicate with an NFCEE, we need to open a logical connection to it, by sending the NCI_OP_CORE_CONN_CREATE_CMD command to the NFCC. It's left up to the drivers to decide when to close an already opened logical connection. 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/nci/core.c38
-rw-r--r--net/nfc/nci/rsp.c47
2 files changed, 85 insertions, 0 deletions
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index e5fb8c8eed94..2a96ed68c7bb 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -507,6 +507,44 @@ int nci_nfcee_mode_set(struct nci_dev *ndev, u8 nfcee_id, u8 nfcee_mode)
}
EXPORT_SYMBOL(nci_nfcee_mode_set);
+static void nci_core_conn_create_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct nci_core_conn_create_cmd cmd;
+ struct core_conn_create_dest_spec_params *params =
+ (struct core_conn_create_dest_spec_params *)opt;
+
+ cmd.destination_type = NCI_DESTINATION_NFCEE;
+ cmd.number_destination_params = 1;
+ memcpy(&cmd.params.type, params,
+ sizeof(struct core_conn_create_dest_spec_params));
+ nci_send_cmd(ndev, NCI_OP_CORE_CONN_CREATE_CMD,
+ sizeof(struct nci_core_conn_create_cmd), &cmd);
+}
+
+int nci_core_conn_create(struct nci_dev *ndev,
+ struct core_conn_create_dest_spec_params *params)
+{
+ ndev->cur_id = params->value.id;
+ return nci_request(ndev, nci_core_conn_create_req,
+ (unsigned long)params,
+ msecs_to_jiffies(NCI_CMD_TIMEOUT));
+}
+EXPORT_SYMBOL(nci_core_conn_create);
+
+static void nci_core_conn_close_req(struct nci_dev *ndev, unsigned long opt)
+{
+ __u8 conn_id = opt;
+
+ nci_send_cmd(ndev, NCI_OP_CORE_CONN_CLOSE_CMD, 1, &conn_id);
+}
+
+int nci_core_conn_close(struct nci_dev *ndev, u8 conn_id)
+{
+ return nci_request(ndev, nci_core_conn_close_req, conn_id,
+ msecs_to_jiffies(NCI_CMD_TIMEOUT));
+}
+EXPORT_SYMBOL(nci_core_conn_close);
+
static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c
index 0a3e98240dd6..31ccf7d05e82 100644
--- a/net/nfc/nci/rsp.c
+++ b/net/nfc/nci/rsp.c
@@ -222,6 +222,45 @@ static void nci_nfcee_mode_set_rsp_packet(struct nci_dev *ndev,
nci_req_complete(ndev, status);
}
+static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ __u8 status = skb->data[0];
+ struct nci_conn_info *conn_info;
+ struct nci_core_conn_create_rsp *rsp;
+
+ pr_debug("status 0x%x\n", status);
+
+ if (status == NCI_STATUS_OK) {
+ rsp = (struct nci_core_conn_create_rsp *)skb->data;
+ list_for_each_entry(conn_info, &ndev->conn_info_list, list) {
+ if (conn_info->id == ndev->cur_id)
+ break;
+ }
+
+ if (!conn_info || conn_info->id != ndev->cur_id) {
+ status = NCI_STATUS_REJECTED;
+ goto exit;
+ }
+
+ conn_info->conn_id = rsp->conn_id;
+ conn_info->max_pkt_payload_len = rsp->max_ctrl_pkt_payload_len;
+ atomic_set(&conn_info->credits_cnt, rsp->credits);
+ }
+
+exit:
+ nci_req_complete(ndev, status);
+}
+
+static void nci_core_conn_close_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ __u8 status = skb->data[0];
+
+ pr_debug("status 0x%x\n", status);
+ nci_req_complete(ndev, status);
+}
+
void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
{
__u16 rsp_opcode = nci_opcode(skb->data);
@@ -251,6 +290,14 @@ void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
nci_core_set_config_rsp_packet(ndev, skb);
break;
+ case NCI_OP_CORE_CONN_CREATE_RSP:
+ nci_core_conn_create_rsp_packet(ndev, skb);
+ break;
+
+ case NCI_OP_CORE_CONN_CLOSE_RSP:
+ nci_core_conn_close_rsp_packet(ndev, skb);
+ break;
+
case NCI_OP_RF_DISCOVER_MAP_RSP:
nci_rf_disc_map_rsp_packet(ndev, skb);
break;