diff options
Diffstat (limited to 'net/nfc/digital_core.c')
| -rw-r--r-- | net/nfc/digital_core.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/net/nfc/digital_core.c b/net/nfc/digital_core.c index e01e15dbf1a..a6ce3c627e4 100644 --- a/net/nfc/digital_core.c +++ b/net/nfc/digital_core.c @@ -22,6 +22,8 @@ #define DIGITAL_PROTO_NFCA_RF_TECH \ (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK | NFC_PROTO_NFC_DEP_MASK) +#define DIGITAL_PROTO_NFCB_RF_TECH NFC_PROTO_ISO14443_B_MASK + #define DIGITAL_PROTO_NFCF_RF_TECH \ (NFC_PROTO_FELICA_MASK | NFC_PROTO_NFC_DEP_MASK) @@ -345,6 +347,12 @@ int digital_target_found(struct nfc_digital_dev *ddev, add_crc = digital_skb_add_crc_a; break; + case NFC_PROTO_ISO14443_B: + framing = NFC_DIGITAL_FRAMING_NFCB_T4T; + check_crc = digital_skb_check_crc_b; + add_crc = digital_skb_add_crc_b; + break; + default: pr_err("Invalid protocol %d\n", protocol); return -EINVAL; @@ -378,6 +386,8 @@ int digital_target_found(struct nfc_digital_dev *ddev, void digital_poll_next_tech(struct nfc_digital_dev *ddev) { + u8 rand_mod; + digital_switch_rf(ddev, 0); mutex_lock(&ddev->poll_lock); @@ -387,8 +397,8 @@ void digital_poll_next_tech(struct nfc_digital_dev *ddev) return; } - ddev->poll_tech_index = (ddev->poll_tech_index + 1) % - ddev->poll_tech_count; + get_random_bytes(&rand_mod, sizeof(rand_mod)); + ddev->poll_tech_index = rand_mod % ddev->poll_tech_count; mutex_unlock(&ddev->poll_lock); @@ -475,6 +485,10 @@ static int digital_start_poll(struct nfc_dev *nfc_dev, __u32 im_protocols, digital_add_poll_tech(ddev, NFC_DIGITAL_RF_TECH_106A, digital_in_send_sens_req); + if (matching_im_protocols & DIGITAL_PROTO_NFCB_RF_TECH) + digital_add_poll_tech(ddev, NFC_DIGITAL_RF_TECH_106B, + digital_in_send_sensb_req); + if (matching_im_protocols & DIGITAL_PROTO_NFCF_RF_TECH) { digital_add_poll_tech(ddev, NFC_DIGITAL_RF_TECH_212F, digital_in_send_sensf_req); @@ -635,7 +649,8 @@ static void digital_in_send_complete(struct nfc_digital_dev *ddev, void *arg, goto done; } - if (ddev->curr_protocol == NFC_PROTO_ISO14443) { + if ((ddev->curr_protocol == NFC_PROTO_ISO14443) || + (ddev->curr_protocol == NFC_PROTO_ISO14443_B)) { rc = digital_in_iso_dep_pull_sod(ddev, resp); if (rc) goto done; @@ -676,7 +691,8 @@ static int digital_in_send(struct nfc_dev *nfc_dev, struct nfc_target *target, goto exit; } - if (ddev->curr_protocol == NFC_PROTO_ISO14443) { + if ((ddev->curr_protocol == NFC_PROTO_ISO14443) || + (ddev->curr_protocol == NFC_PROTO_ISO14443_B)) { rc = digital_in_iso_dep_push_sod(ddev, skb); if (rc) goto exit; @@ -747,6 +763,8 @@ struct nfc_digital_dev *nfc_digital_allocate_device(struct nfc_digital_ops *ops, ddev->protocols |= NFC_PROTO_ISO15693_MASK; if (supported_protocols & NFC_PROTO_ISO14443_MASK) ddev->protocols |= NFC_PROTO_ISO14443_MASK; + if (supported_protocols & NFC_PROTO_ISO14443_B_MASK) + ddev->protocols |= NFC_PROTO_ISO14443_B_MASK; ddev->tx_headroom = tx_headroom + DIGITAL_MAX_HEADER_LEN; ddev->tx_tailroom = tx_tailroom + DIGITAL_CRC_LEN; |