diff options
Diffstat (limited to 'net/nfc/nci/rsp.c')
| -rw-r--r-- | net/nfc/nci/rsp.c | 81 |
1 files changed, 67 insertions, 14 deletions
diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c index a48297b79f34..e9605922a322 100644 --- a/net/nfc/nci/rsp.c +++ b/net/nfc/nci/rsp.c @@ -31,16 +31,19 @@ static void nci_core_reset_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) pr_debug("status 0x%x\n", rsp->status); - if (rsp->status == NCI_STATUS_OK) { - ndev->nci_ver = rsp->nci_ver; - pr_debug("nci_ver 0x%x, config_status 0x%x\n", - rsp->nci_ver, rsp->config_status); - } + /* Handle NCI 1.x ver */ + if (skb->len != 1) { + if (rsp->status == NCI_STATUS_OK) { + ndev->nci_ver = rsp->nci_ver; + pr_debug("nci_ver 0x%x, config_status 0x%x\n", + rsp->nci_ver, rsp->config_status); + } - nci_req_complete(ndev, rsp->status); + nci_req_complete(ndev, rsp->status); + } } -static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) +static u8 nci_core_init_rsp_packet_v1(struct nci_dev *ndev, struct sk_buff *skb) { struct nci_core_init_rsp_1 *rsp_1 = (void *) skb->data; struct nci_core_init_rsp_2 *rsp_2; @@ -48,16 +51,14 @@ static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) pr_debug("status 0x%x\n", rsp_1->status); if (rsp_1->status != NCI_STATUS_OK) - goto exit; + return rsp_1->status; ndev->nfcc_features = __le32_to_cpu(rsp_1->nfcc_features); ndev->num_supported_rf_interfaces = rsp_1->num_supported_rf_interfaces; - if (ndev->num_supported_rf_interfaces > - NCI_MAX_SUPPORTED_RF_INTERFACES) { - ndev->num_supported_rf_interfaces = - NCI_MAX_SUPPORTED_RF_INTERFACES; - } + ndev->num_supported_rf_interfaces = + min((int)ndev->num_supported_rf_interfaces, + NCI_MAX_SUPPORTED_RF_INTERFACES); memcpy(ndev->supported_rf_interfaces, rsp_1->supported_rf_interfaces, @@ -77,6 +78,58 @@ static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) ndev->manufact_specific_info = __le32_to_cpu(rsp_2->manufact_specific_info); + return NCI_STATUS_OK; +} + +static u8 nci_core_init_rsp_packet_v2(struct nci_dev *ndev, struct sk_buff *skb) +{ + struct nci_core_init_rsp_nci_ver2 *rsp = (void *)skb->data; + u8 *supported_rf_interface = rsp->supported_rf_interfaces; + u8 rf_interface_idx = 0; + u8 rf_extension_cnt = 0; + + pr_debug("status %x\n", rsp->status); + + if (rsp->status != NCI_STATUS_OK) + return rsp->status; + + ndev->nfcc_features = __le32_to_cpu(rsp->nfcc_features); + ndev->num_supported_rf_interfaces = rsp->num_supported_rf_interfaces; + + ndev->num_supported_rf_interfaces = + min((int)ndev->num_supported_rf_interfaces, + NCI_MAX_SUPPORTED_RF_INTERFACES); + + while (rf_interface_idx < ndev->num_supported_rf_interfaces) { + ndev->supported_rf_interfaces[rf_interface_idx++] = *supported_rf_interface++; + + /* skip rf extension parameters */ + rf_extension_cnt = *supported_rf_interface++; + supported_rf_interface += rf_extension_cnt; + } + + ndev->max_logical_connections = rsp->max_logical_connections; + ndev->max_routing_table_size = + __le16_to_cpu(rsp->max_routing_table_size); + ndev->max_ctrl_pkt_payload_len = + rsp->max_ctrl_pkt_payload_len; + ndev->max_size_for_large_params = NCI_MAX_LARGE_PARAMS_NCI_v2; + + return NCI_STATUS_OK; +} + +static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) +{ + u8 status = 0; + + if (!(ndev->nci_ver & NCI_VER_2_MASK)) + status = nci_core_init_rsp_packet_v1(ndev, skb); + else + status = nci_core_init_rsp_packet_v2(ndev, skb); + + if (status != NCI_STATUS_OK) + goto exit; + pr_debug("nfcc_features 0x%x\n", ndev->nfcc_features); pr_debug("num_supported_rf_interfaces %d\n", @@ -103,7 +156,7 @@ static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb) ndev->manufact_specific_info); exit: - nci_req_complete(ndev, rsp_1->status); + nci_req_complete(ndev, status); } static void nci_core_set_config_rsp_packet(struct nci_dev *ndev, |