ofp_pktinfilter: add 'logging' option

When packet_in_filter discards a packet, it is always logging. However,
it may be felt noisy.

Signed-off-by: Satoshi Kobayashi <satoshi-k@stratosphere.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
ofa_neutron_agent: Add a comment to explain what uses this

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
ryu.cfg: Fix a comment

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
ofctl_v1_0: correct flow modify message

following fields is not set at mod_flow_stats command:

  * out_port, buffer_id

this patch fixes this problem.

Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
sw test tool: support specifying the port number

You can specify the port number in the options when sw test tool is started.
The example is as follows:

  ryu-manager --test-switch-target_recv_port 4   (default:1)
              --test-switch-target_send_port_1 5 (default:2)
              --test-switch-target_send_port_2 6 (default:3)
              --test-switch-tester_send_port 7   (default:1)
              --test-switch-tester_recv_port_1 8 (default:2)
              --test-switch-tester_recv_port_2 9 (default:3)
               ryu/tests/switch/tester.py

Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
sw test tool: add a comment about specifying the port number support

Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
sw test tool: add unit test

Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>