diff options
| author |   Samuel Ortiz <sameo@linux.intel.com> | 2012-03-05 01:03:42 +0100 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2012-03-06 15:16:22 -0500 |
| commit | d094afa155273e03b82981ea818d39c7a2dfba86 (patch) | |
| tree | 85aafb65a5612c9d30fb68118a18948e22178f68 /net/nfc/llcp/commands.c | |
| parent | NFC: Set the right LLCP N(R) value for I frames (diff) | |
| download | linux-dev-d094afa155273e03b82981ea818d39c7a2dfba86.tar.xz linux-dev-d094afa155273e03b82981ea818d39c7a2dfba86.zip | |
NFC: Send LLCP RR frames to acknowledge received I frames
In order to acknowledge an I frame, we have to either queue pending local
I frames or queue a receiver ready frame.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/nfc/llcp/commands.c')
| -rw-r--r-- | net/nfc/llcp/commands.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/net/nfc/llcp/commands.c b/net/nfc/llcp/commands.c index f6c2257c11aa..8ebd322b11eb 100644 --- a/net/nfc/llcp/commands.c +++ b/net/nfc/llcp/commands.c @@ -428,3 +428,27 @@ int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock, return 0; } + +int nfc_llcp_send_rr(struct nfc_llcp_sock *sock) +{ + struct sk_buff *skb; + struct nfc_llcp_local *local; + + pr_debug("Send rr nr %d\n", sock->recv_n); + + local = sock->local; + if (local == NULL) + return -ENODEV; + + skb = llcp_allocate_pdu(sock, LLCP_PDU_RR, LLCP_SEQUENCE_SIZE); + if (skb == NULL) + return -ENOMEM; + + skb_put(skb, LLCP_SEQUENCE_SIZE); + + skb->data[2] = sock->recv_n % 16; + + skb_queue_head(&local->tx_queue, skb); + + return 0; +} |