Commit de121989 authored by John W. Linville's avatar John W. Linville
Browse files

Merge tag 'nfc-fixes-3.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-fixes 



Samuel Ortiz <sameo@linux.intel.com> says:

This is the first NFC pull request for 3.9 fixes

With this one we have:

- A fix for properly decreasing socket ack log.
- A timer and works cleanup upon NFC device removal.
- A monitoroing socket cleanup round from llcp_socket_release.
- A proper error report to pending sockets upon NFC device removal.

Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parents 66489978 3bbc0ceb

net/nfc/llcp/llcp.c

+53 −9
Original line number Diff line number Diff line
@@ -68,7 +68,8 @@ static void nfc_llcp_socket_purge(struct nfc_llcp_sock *sock) 
	}

}



static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)

static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen,

				    int err)

{

	struct sock *sk;

	struct hlist_node *tmp;
@@ -100,7 +101,10 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) 


				nfc_llcp_accept_unlink(accept_sk);



				if (err)

					accept_sk->sk_err = err;

				accept_sk->sk_state = LLCP_CLOSED;

				accept_sk->sk_state_change(sk);



				bh_unlock_sock(accept_sk);
@@ -123,7 +127,10 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) 
			continue;

		}



		if (err)

			sk->sk_err = err;

		sk->sk_state = LLCP_CLOSED;

		sk->sk_state_change(sk);



		bh_unlock_sock(sk);
@@ -133,6 +140,36 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) 
	}



	write_unlock(&local->sockets.lock);



	/*

	 * If we want to keep the listening sockets alive,

	 * we don't touch the RAW ones.

	 */

	if (listen == true)

		return;



	write_lock(&local->raw_sockets.lock);



	sk_for_each_safe(sk, tmp, &local->raw_sockets.head) {

		llcp_sock = nfc_llcp_sock(sk);



		bh_lock_sock(sk);



		nfc_llcp_socket_purge(llcp_sock);



		if (err)

			sk->sk_err = err;

		sk->sk_state = LLCP_CLOSED;

		sk->sk_state_change(sk);



		bh_unlock_sock(sk);



		sock_orphan(sk);



		sk_del_node_init(sk);

	}



	write_unlock(&local->raw_sockets.lock);

}



struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local)
@@ -142,20 +179,25 @@ struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local) 
	return local;

}



static void local_release(struct kref *ref)

static void local_cleanup(struct nfc_llcp_local *local, bool listen)

{

	struct nfc_llcp_local *local;



	local = container_of(ref, struct nfc_llcp_local, ref);



	list_del(&local->list);

	nfc_llcp_socket_release(local, false);

	nfc_llcp_socket_release(local, listen, ENXIO);

	del_timer_sync(&local->link_timer);

	skb_queue_purge(&local->tx_queue);

	cancel_work_sync(&local->tx_work);

	cancel_work_sync(&local->rx_work);

	cancel_work_sync(&local->timeout_work);

	kfree_skb(local->rx_pending);

}



static void local_release(struct kref *ref)

{

	struct nfc_llcp_local *local;



	local = container_of(ref, struct nfc_llcp_local, ref);



	list_del(&local->list);

	local_cleanup(local, false);

	kfree(local);

}
@@ -1348,7 +1390,7 @@ void nfc_llcp_mac_is_down(struct nfc_dev *dev) 
		return;



	/* Close and purge all existing sockets */

	nfc_llcp_socket_release(local, true);

	nfc_llcp_socket_release(local, true, 0);

}



void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
@@ -1427,6 +1469,8 @@ void nfc_llcp_unregister_device(struct nfc_dev *dev) 
		return;

	}



	local_cleanup(local, false);



	nfc_llcp_local_put(local);

}

net/nfc/llcp/sock.c

+2 −0
Original line number Diff line number Diff line
@@ -278,6 +278,8 @@ struct sock *nfc_llcp_accept_dequeue(struct sock *parent, 


			pr_debug("Returning sk state %d\n", sk->sk_state);



			sk_acceptq_removed(parent);



			return sk;

		}

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