Re: [dpdk-dev] Dynamic port/pipe QoS configuration

[satish <nsatishbabu@gmail.com>]

Hi,
Can someone please respond to below?
Thank you.

On Mon, Oct 13, 2014 at 3:54 PM, satish <nsatishbabu@gmail.com> wrote:

> Hi,
> We are trying to provide QoS support for one of our clients using
> rte_sched.
> In our implementation we are treating each pipe as a customer.
> So, we can have maximum of 4096 customers per sub-port.
> Customers(pipe) can be added, deleted or modified dynamically. Each
> customer can have different profiles.
>
> Currently we are using DPDK-v1.6.
> Can I modify pipe profile during run time using rte_sched_pipe_config ()?
>
> Our plan is to have initial configs as below (similar to examples in DPDK)
> [1] Specify port params at the initialization of port as below
> static struct rte_sched_port_params port_param = {
> :
> :
> .n_subports_per_port = 1,
> .n_pipes_per_subport = 4096,
> .qsize = {64, 64, 64, 64},
> .pipe_profiles = pipe_profile,
> .n_pipe_profiles = 1,
> }
>
> [2]
> static struct rte_sched_subport_params subport_param[] = {
> {
> .tb_rate = Link speed (1G/10G..) divided by 8 (bits),
> .tb_size = 1000000,
>
> .tc_rate = {Same as tb_rate, Same as tb_rate, Same as tb_rate, Same as
> tb_rate},
> .tc_period = 10,
> },
> };
>
> [3]
> static struct rte_sched_pipe_params pipe_profile[] = {
> { /* Profile #0 */
> .tb_rate = Link speed (1G/10G..) divided by 8 (bits)/4096 (maximum number
> of pipes),
> .tb_size = 1000000,
>
> .tc_rate = {pipe's tb_rate, pipe's tb_rate, pipe's tb_rate, pipe's
> tb_rate},
> .tc_period = 40,
>
> .wrr_weights = {16, 4, 2, 1,  16, 4, 2, 1,  16, 4, 2, 1,  16, 4, 2, 1},
> },
> };
>
> Our plan here is to initialize the pipe with default profile and modify
> each pipe based on user configurations.
> My questions are
> [a] Can I modify pipe profile during run time using rte_sched_pipe_config
> ()? (question repeated)
> If I can modify at pipe level,
> [b] Can we have different profiles for pipes, With one default profile at
> initialization?
> [c] Can we modify port level params without deleting the port using
> rte_sched_port_config ()?
>
> Please provide your valuable comments.
> Thanks in advance.
>
> --
> Regards,
> Satish Babu
>
>


-- 
Regards,
Satish Babu