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| author | Samuel Ortiz <sameo@linux.intel.com> | 2012-06-26 16:13:29 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-07-09 22:42:20 +0200 |
| commit | 5c0560b7a5c662ce5fef6ddd52f7bc8d38ad1907 (patch) | |
| tree | c3ab7675d243ff884a59271463c089daa5654930 | |
| parent | NFC: LLCP late binding (diff) | |
| download | linux-5c0560b7a5c662ce5fef6ddd52f7bc8d38ad1907.tar.xz linux-5c0560b7a5c662ce5fef6ddd52f7bc8d38ad1907.zip | |
NFC: Handle LLCP Disconnected Mode frames
When receiving such frame, the sockets waiting for a connection to finish
should be woken up. Connecting to an unbound LLCP service will trigger a
DM as a response.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| -rw-r--r-- | net/nfc/llcp/llcp.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c index 6094a2099bd6..f3bc0a9efb37 100644 --- a/net/nfc/llcp/llcp.c +++ b/net/nfc/llcp/llcp.c @@ -958,6 +958,45 @@ static void nfc_llcp_recv_cc(struct nfc_llcp_local *local, struct sk_buff *skb) nfc_llcp_sock_put(llcp_sock); } +static void nfc_llcp_recv_dm(struct nfc_llcp_local *local, struct sk_buff *skb) +{ + struct nfc_llcp_sock *llcp_sock; + struct sock *sk; + u8 dsap, ssap, reason; + + dsap = nfc_llcp_dsap(skb); + ssap = nfc_llcp_ssap(skb); + reason = skb->data[2]; + + pr_debug("%d %d reason %d\n", ssap, dsap, reason); + + switch (reason) { + case LLCP_DM_NOBOUND: + case LLCP_DM_REJ: + llcp_sock = nfc_llcp_connecting_sock_get(local, dsap); + break; + + default: + llcp_sock = nfc_llcp_sock_get(local, dsap, ssap); + break; + } + + if (llcp_sock == NULL) { + pr_err("Invalid DM\n"); + return; + } + + sk = &llcp_sock->sk; + + sk->sk_err = ENXIO; + sk->sk_state = LLCP_CLOSED; + sk->sk_state_change(sk); + + nfc_llcp_sock_put(llcp_sock); + + return; +} + static void nfc_llcp_rx_work(struct work_struct *work) { struct nfc_llcp_local *local = container_of(work, struct nfc_llcp_local, @@ -1001,6 +1040,11 @@ static void nfc_llcp_rx_work(struct work_struct *work) nfc_llcp_recv_cc(local, skb); break; + case LLCP_PDU_DM: + pr_debug("DM\n"); + nfc_llcp_recv_dm(local, skb); + break; + case LLCP_PDU_I: case LLCP_PDU_RR: case LLCP_PDU_RNR: |