diff options
Diffstat (limited to 'net/nfc/digital_dep.c')
| -rw-r--r-- | net/nfc/digital_dep.c | 54 |
1 files changed, 36 insertions, 18 deletions
diff --git a/net/nfc/digital_dep.c b/net/nfc/digital_dep.c index 07bbc24fb4c7..43e450f78d0a 100644 --- a/net/nfc/digital_dep.c +++ b/net/nfc/digital_dep.c @@ -32,7 +32,6 @@ #define DIGITAL_ATR_REQ_MIN_SIZE 16 #define DIGITAL_ATR_REQ_MAX_SIZE 64 -#define DIGITAL_NFCID3_LEN ((u8)8) #define DIGITAL_LR_BITS_PAYLOAD_SIZE_254B 0x30 #define DIGITAL_GB_BIT 0x02 @@ -206,10 +205,9 @@ int digital_in_send_atr_req(struct nfc_digital_dev *ddev, atr_req->dir = DIGITAL_NFC_DEP_FRAME_DIR_OUT; atr_req->cmd = DIGITAL_CMD_ATR_REQ; if (target->nfcid2_len) - memcpy(atr_req->nfcid3, target->nfcid2, - max(target->nfcid2_len, DIGITAL_NFCID3_LEN)); + memcpy(atr_req->nfcid3, target->nfcid2, NFC_NFCID2_MAXSIZE); else - get_random_bytes(atr_req->nfcid3, DIGITAL_NFCID3_LEN); + get_random_bytes(atr_req->nfcid3, NFC_NFCID3_MAXSIZE); atr_req->did = 0; atr_req->bs = 0; @@ -382,6 +380,33 @@ int digital_in_send_dep_req(struct nfc_digital_dev *ddev, data_exch); } +static void digital_tg_set_rf_tech(struct nfc_digital_dev *ddev, u8 rf_tech) +{ + ddev->curr_rf_tech = rf_tech; + + ddev->skb_add_crc = digital_skb_add_crc_none; + ddev->skb_check_crc = digital_skb_check_crc_none; + + if (DIGITAL_DRV_CAPS_TG_CRC(ddev)) + return; + + switch (ddev->curr_rf_tech) { + case NFC_DIGITAL_RF_TECH_106A: + ddev->skb_add_crc = digital_skb_add_crc_a; + ddev->skb_check_crc = digital_skb_check_crc_a; + break; + + case NFC_DIGITAL_RF_TECH_212F: + case NFC_DIGITAL_RF_TECH_424F: + ddev->skb_add_crc = digital_skb_add_crc_f; + ddev->skb_check_crc = digital_skb_check_crc_f; + break; + + default: + break; + } +} + static void digital_tg_recv_dep_req(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { @@ -472,11 +497,13 @@ int digital_tg_send_dep_res(struct nfc_digital_dev *ddev, struct sk_buff *skb) static void digital_tg_send_psl_res_complete(struct nfc_digital_dev *ddev, void *arg, struct sk_buff *resp) { - u8 rf_tech = PTR_ERR(arg); + u8 rf_tech = (unsigned long)arg; if (IS_ERR(resp)) return; + digital_tg_set_rf_tech(ddev, rf_tech); + digital_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, rf_tech); digital_tg_listen(ddev, 1500, digital_tg_recv_dep_req, NULL); @@ -508,7 +535,7 @@ static int digital_tg_send_psl_res(struct nfc_digital_dev *ddev, u8 did, ddev->skb_add_crc(skb); rc = digital_tg_send_cmd(ddev, skb, 0, digital_tg_send_psl_res_complete, - ERR_PTR(rf_tech)); + (void *)(unsigned long)rf_tech); if (rc) kfree_skb(skb); @@ -661,16 +688,10 @@ void digital_tg_recv_atr_req(struct nfc_digital_dev *ddev, void *arg, if (resp->data[0] == DIGITAL_NFC_DEP_NFCA_SOD_SB) { min_size = DIGITAL_ATR_REQ_MIN_SIZE + 2; - - ddev->curr_rf_tech = NFC_DIGITAL_RF_TECH_106A; - ddev->skb_add_crc = digital_skb_add_crc_a; - ddev->skb_check_crc = digital_skb_check_crc_a; + digital_tg_set_rf_tech(ddev, NFC_DIGITAL_RF_TECH_106A); } else { min_size = DIGITAL_ATR_REQ_MIN_SIZE + 1; - - ddev->curr_rf_tech = NFC_DIGITAL_RF_TECH_212F; - ddev->skb_add_crc = digital_skb_add_crc_f; - ddev->skb_check_crc = digital_skb_check_crc_f; + digital_tg_set_rf_tech(ddev, NFC_DIGITAL_RF_TECH_212F); } if (resp->len < min_size) { @@ -678,10 +699,7 @@ void digital_tg_recv_atr_req(struct nfc_digital_dev *ddev, void *arg, goto exit; } - if (DIGITAL_DRV_CAPS_TG_CRC(ddev)) { - ddev->skb_add_crc = digital_skb_add_crc_none; - ddev->skb_check_crc = digital_skb_check_crc_none; - } + ddev->curr_protocol = NFC_PROTO_NFC_DEP_MASK; rc = ddev->skb_check_crc(resp); if (rc) { |