vxlan: remove dstport option

Dstport option does not work as expected in 3.10
It only allows setting port for sending and does not enable incoming
receive.
ss: replace bfp with bpf in usage().

This patch fixes usage() of misc/ss.c to use bpf instead of bfp.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
man: describe --bpf option of ss

This option has been recently added to ss utility.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
iptuntap: allow creation of multi-queue tun/tap device

This patch adds multi_queue option to ip tuntap.
This allows IFF_MULTI_QUEUE flag to be specified during
tun/tap device creation enabling multi-queue support in tun/tap
device.

Example: ip tuntap add dev tap0 mode tap multi_queue

Signed-off-by: Sriram Narasimhan <sriram.narasimhan@hp.com>