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From: Kevin Yan <Kevin.Yan@mavenir.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: DPDK qos support for 40G port
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Date: Fri, 4 Aug 2017 01:54:54 +0000
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Subject: [dpdk-dev] DPDK qos support for 40G port
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Hi,
I have a question about dpdk qos feature, in rte_sched.h,
/** Port configuration parameters. */
struct rte_sched_port_params {
const char *name; /**< String to be associat=
ed */
int socket; /**< CPU socket ID */
uint32_t rate; /**< Output port rate
=
* (measured in bytes per second) */
uint32_t mtu; /**< Maximum Ethernet fram=
e size
=
* (measured in bytes).
=
* Should not include the framing overhead. */
uint32_t frame_overhead; /**< Framing overhead per =
packet
=
* (measured in bytes) */
uint32_t n_subports_per_port; /**< Number of subports */
uint32_t n_pipes_per_subport; /**< Number of pipes per s=
ubport */
uint16_t qsize[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE];
/**< Packet queue size for each traffic class.
* All queues within the same pipe traffic class have the sa=
me
* size. Queues from different pipes serving the same traffi=
c
* class have the same size. */
struct rte_sched_pipe_params *pipe_profiles;
/**< Pipe profile table.
* Every pipe is configured using one of the profiles from t=
his table. */
uint32_t n_pipe_profiles; /**< Profiles in the pipe =
profile table */
#ifdef RTE_SCHED_RED
struct rte_red_params red_params[RTE_SCHED_TRAFFIC_CLASSES_=
PER_PIPE][e_RTE_METER_COLORS]; /**< RED parameters */
#endif
};
rate is type of uint32_t, but if physical port rate is 40G =
bit/s, which is 5G byte/s, 5G already exceed the max value of uint32_t, so =
I doult that 40G is not supported by dpdk qos lib, or any error of my under=
standing?
Thanks and waiting for your reply!
BRs,
Kevin
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