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NFC: Release LLCP SAP when the owner is released

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The LLCP SAP should only be freed when the socket owning it is released.
As long as the socket is alive, the SAP should be reserved in order to
e.g. send the right wks array when bringing the MAC up.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz
2012-06-22 14:48:11 +02:00
committed by John W. Linville
parent 4d22ea1532
commit cbbf472181
3 changed files with 11 additions and 14 deletions
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9
net/nfc/llcp/sock.c
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@@ -124,6 +124,8 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
if (llcp_sock->ssap == LLCP_MAX_SAP)
goto put_dev;
llcp_sock->reserved_ssap = llcp_sock->ssap;
nfc_llcp_sock_link(&local->sockets, sk);
pr_debug("Socket bound to SAP %d\n", llcp_sock->ssap);
@@ -409,7 +411,8 @@ static int llcp_sock_release(struct socket *sock)
}
}
nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
release_sock(sk);
@@ -489,6 +492,9 @@ static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
ret = -ENOMEM;
goto put_dev;
}
llcp_sock->reserved_ssap = llcp_sock->ssap;
if (addr->service_name_len == 0)
llcp_sock->dsap = addr->dsap;
else
@@ -690,6 +696,7 @@ struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp)
llcp_sock->send_n = llcp_sock->send_ack_n = 0;
llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
llcp_sock->remote_ready = 1;
llcp_sock->reserved_ssap = LLCP_SAP_MAX;
skb_queue_head_init(&llcp_sock->tx_queue);
skb_queue_head_init(&llcp_sock->tx_pending_queue);
skb_queue_head_init(&llcp_sock->tx_backlog_queue);