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| author | Samuel Ortiz <sameo@linux.intel.com> | 2012-10-05 01:13:24 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-10-26 18:26:47 +0200 |
| commit | c43bb03d5a7df53684cfb2a1fed5ea20014c7056 (patch) | |
| tree | f402223e4c7e235489b29a5b32c5b8653a8f648f /net | |
| parent | 922239064bb39b4ed9329ffd9418c20f8d64cbbb (diff) | |
| download | linux-c43bb03d5a7df53684cfb2a1fed5ea20014c7056.tar.gz linux-c43bb03d5a7df53684cfb2a1fed5ea20014c7056.tar.bz2 linux-c43bb03d5a7df53684cfb2a1fed5ea20014c7056.zip | |
NFC: Add SNL frame building routine
SNL (Service Name Lookup) frames are used to respond to SNL requests.
This is needed for SDP implementation.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/nfc/llcp/commands.c | 46 | ||||
| -rw-r--r-- | net/nfc/llcp/llcp.h | 1 |
2 files changed, 47 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; diff --git a/net/nfc/llcp/llcp.h b/net/nfc/llcp/llcp.h index fdb2d24e60bd..1c0a66fab570 100644 --- a/net/nfc/llcp/llcp.h +++ b/net/nfc/llcp/llcp.h @@ -209,6 +209,7 @@ int nfc_llcp_disconnect(struct nfc_llcp_sock *sock); int nfc_llcp_send_symm(struct nfc_dev *dev); int nfc_llcp_send_connect(struct nfc_llcp_sock *sock); int nfc_llcp_send_cc(struct nfc_llcp_sock *sock); +int nfc_llcp_send_snl(struct nfc_llcp_local *local, u8 tid, u8 sap); int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason); int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock); int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock, |