SR-IOV vf rate

hi,

     I want to set the rx rate for one vf, currently i found txrate can be set by command: ip link set eth2 vf 0 rate 1000

i check the ip link help message, only see rate TXRATE in red color.

[root@c0209 ~]# ip link help

Usage: ip link add [link DEV] [ name ] NAME

...

       ip link set { dev DEVICE | group DEVGROUP } [ { up | down } ]

                      [ vf NUM [ mac LLADDR ]

                   [ vlan VLANID [ qos VLAN-QOS ] ]

                   [ rate TXRATE ] ]

                   [ spoofchk { on | off} ] ]

                   [ query_rss { on | off} ] ]

                   [ state { auto | enable | disable} ] ]

i want to know how to set the rx rate for individual vf.

OS:centos7.2

NIC: Intel 82599ES

Many Thanks

majorin