diff options
Diffstat (limited to 'net/nfc/llcp/commands.c')
| -rw-r--r-- | net/nfc/llcp/commands.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/net/nfc/llcp/commands.c b/net/nfc/llcp/commands.c index 5e33cba43936..6db280ddc4c8 100644 --- a/net/nfc/llcp/commands.c +++ b/net/nfc/llcp/commands.c @@ -420,6 +420,52 @@ error_tlv: return err; } +int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap) +{ + struct sk_buff *skb; + struct nfc_dev *dev; + u8 *sdres_tlv = NULL, sdres_tlv_length, sdres[2]; + u16 size = 0; + + pr_debug("Sending SNL tid 0x%x sap 0x%x\n", tid, sap); + + if (local == NULL) + return -ENODEV; + + dev = local->dev; + if (dev == NULL) + return -ENODEV; + + sdres[0] = tid; + sdres[1] = sap; + sdres_tlv = nfc_llcp_build_tlv(LLCP_TLV_SDRES, sdres, 0, + &sdres_tlv_length); + if (sdres_tlv == NULL) + return -ENOMEM; + + size += LLCP_HEADER_SIZE; + size += dev->tx_headroom + dev->tx_tailroom + NFC_HEADER_SIZE; + size += sdres_tlv_length; + + skb = alloc_skb(size, GFP_KERNEL); + if (skb == NULL) { + kfree(sdres_tlv); + return -ENOMEM; + } + + skb_reserve(skb, dev->tx_headroom + NFC_HEADER_SIZE); + + skb = llcp_add_header(skb, LLCP_SAP_SDP, LLCP_SAP_SDP, LLCP_PDU_SNL); + + memcpy(skb_put(skb, sdres_tlv_length), sdres_tlv, sdres_tlv_length); + + skb_queue_tail(&local->tx_queue, skb); + + kfree(sdres_tlv); + + return 0; +} + int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason) { struct sk_buff *skb; |
