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NFC: Handle Receiver Not Ready LLCP frame

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Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Samuel Ortiz 2012-03-05 01:03:36 +01:00 committed by John W. Linville
parent 4722d2b70b
commit 53aef92054
1 changed files with 11 additions and 5 deletions
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16
net/nfc/llcp/llcp.c
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@ -671,15 +671,15 @@ static void nfc_llcp_recv_hdlc(struct nfc_llcp_local *local,
nfc_llcp_sock_put(llcp_sock);
}
if (ns == llcp_sock->recv_n)
llcp_sock->recv_n = (llcp_sock->recv_n + 1) % 16;
else
pr_err("Received out of sequence I PDU\n");
/* Pass the payload upstream */
if (ptype == LLCP_PDU_I) {
pr_debug("I frame, queueing on %p\n", &llcp_sock->sk);
if (ns == llcp_sock->recv_n)
llcp_sock->recv_n = (llcp_sock->recv_n + 1) % 16;
else
pr_err("Received out of sequence I PDU\n");
skb_pull(skb, LLCP_HEADER_SIZE + LLCP_SEQUENCE_SIZE);
if (sock_queue_rcv_skb(&llcp_sock->sk, skb)) {
pr_err("receive queue is full\n");
@ -700,6 +700,11 @@ static void nfc_llcp_recv_hdlc(struct nfc_llcp_local *local,
}
}
if (ptype == LLCP_PDU_RR)
llcp_sock->remote_ready = true;
else if (ptype == LLCP_PDU_RNR)
llcp_sock->remote_ready = false;
nfc_llcp_queue_i_frames(llcp_sock);
release_sock(sk);
@ -813,6 +818,7 @@ static void nfc_llcp_rx_work(struct work_struct *work)
case LLCP_PDU_I:
case LLCP_PDU_RR:
case LLCP_PDU_RNR:
pr_debug("I frame\n");
nfc_llcp_recv_hdlc(local, skb);
break;