MIMXRT1176AVM8A 1G以太网网络性能测试

    之前使用I.MX6Q/I.MX6Q(imx_3.0.35_4.1.0), 1GB RGMII 以太网测试性能大概 495Mbits/sec, 如下是iperf测试过程。

iperf -c 192.168.0.112 -u -b 800M -t 10 -l 1000

Client connecting to 192.168.112.125, UDP port 5002

Sending 1000 byte datagrams

UDP buffer size:  208 KByte (default)

[  3] local 192.168.112.6 port 45230 connected with 192.168.112.125 port 5002

[ ID] Interval       Transfer     Bandwidth

[  3]  0.0-10.0 sec   590 MBytes   495 Mbits/sec

[  3] Sent 618437 datagrams

[  3] WARNING: did not receive ack of last datagram after 10 tries.

    读勘误手册 "Chip Errata for the i.MX 6"，里面有如下描述 ERR004512:

IMX6DQCE (nxp.com.cn) 确实和测试比较吻合。

    目前使用 MIMXRT1176AVM8A  MCU 芯片内置的1G 以太网。

    为了验证网络性能，使用Iperf 吞吐性能测试如下：硬件电路板——MIMXRT1170-EVK C2， 软件包—— SDK_2.12.0-MIMXRT1170-EVK，下载链接如下。添加 iperf 代码到 lwip_ping_freertos_cm7中，使用flexspi nor sdram 调试。

    lwipopts.h文件需要做如下配置才能达到比较高的网络速率，如下是测试结果。

    这些结果不完全相同，与主机操作系统也存在性能差异，不同的主机性能也存在显著差异。总体来讲 MIMXRT1176 MCU的 1G网络性能是没有I.MX6上面的速率限制的问题。

    lwipopts.h 配置文件如下：

/** @file    lwipopts.h

 * This file is based on srcincludelwipopt.h */

#ifndef __LWIPOPTS_H__

#define __LWIPOPTS_H__

#include "fsl_device_registers.h"

#if USE_RTOS

/* SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain critical regions during buffer allocation, deallocation and memory allocation and deallocation. */

#define SYS_LIGHTWEIGHT_PROT 1

/* NO_SYS==0: Use RTOS */

#define NO_SYS 0

/* LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c) */

#define LWIP_NETCONN 1

/** LWIP_SOCKET==1: Enable Socket API (require to use sockets.c) */

#define LWIP_SOCKET 1

/**LWIP_SO_RCVTIMEO==1: Enable receive timeout for sockets/netconns and SO_RCVTIMEO processing. */

#define LWIP_SO_RCVTIMEO 1

#else

/** NO_SYS==1: Bare metal lwIP */

#define NO_SYS       1

/* LWIP_NETCONN==0: Disable Netconn API (require to use api_lib.c) */

#define LWIP_NETCONN 0

/** LWIP_SOCKET==0: Disable Socket API (require to use sockets.c) */

#define LWIP_SOCKET  0

/** LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT=1: we need to free PBUF_RAM pbufs from ISR context on LPC. */

#if defined(FSL_FEATURE_SOC_LPC_ENET_COUNT) && (FSL_FEATURE_SOC_LPC_ENET_COUNT > 0)

#ifndef LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT

#define LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT 1

#endif

#endif

#endif

/* ---------- Core locking ---------- */

void sys_check_core_locking(void);

#define LWIP_ASSERT_CORE_LOCKED() sys_check_core_locking()

/* ---------- Memory options ---------- */

/**

 * MEM_ALIGNMENT: should be set to the alignment of the CPU

 *    4 byte alignment -> #define MEM_ALIGNMENT 4

 *    2 byte alignment -> #define MEM_ALIGNMENT 2

 */

#ifndef MEM_ALIGNMENT

#define MEM_ALIGNMENT 4

#endif

/**

 * MEM_SIZE: the size of the heap memory. If the application will send

 * a lot of data that needs to be copied, this should be set high.

 */

#ifndef MEM_SIZE

#define MEM_SIZE (22 * 1024)

#endif

/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application sends a lot of data out of ROM (or other static memory), this should be set high. */

#ifndef MEMP_NUM_PBUF

#define MEMP_NUM_PBUF ((TCP_WND + TCP_SND_BUF) / TCP_MSS)//15

#endif

/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One per active UDP "connection". */

#ifndef MEMP_NUM_UDP_PCB

#define MEMP_NUM_UDP_PCB 6

#endif

/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP

   connections. */

#ifndef MEMP_NUM_TCP_PCB

#define MEMP_NUM_TCP_PCB 10

#endif

/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP

   connections. */

#ifndef MEMP_NUM_TCP_PCB_LISTEN

#define MEMP_NUM_TCP_PCB_LISTEN 6

#endif

/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP

   segments. */

#ifndef MEMP_NUM_TCP_SEG

#define MEMP_NUM_TCP_SEG ((3 * TCP_SND_BUF) / TCP_MSS + 1)//22

#endif

/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active

   timeouts. */

#ifndef MEMP_NUM_SYS_TIMEOUT

#define MEMP_NUM_SYS_TIMEOUT 10

#endif

/* ---------- Pbuf options ---------- */

/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */

#ifndef PBUF_POOL_SIZE

#define PBUF_POOL_SIZE 20//9

#endif

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */

/* Default value is defined in lwipsrcincludelwipopt.h as

LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_ENCAPSULATION_HLEN+PBUF_LINK_HLEN)*/

/* ---------- TCP options ---------- */

#ifndef LWIP_TCP

#define LWIP_TCP 1

#endif

#ifndef TCP_TTL

#define TCP_TTL 255

#endif

/* Controls if TCP should queue segments that arrive out of

   order. Define to 0 if your device is low on memory. */

#ifndef TCP_QUEUE_OOSEQ

#define TCP_QUEUE_OOSEQ 0

#endif

/* TCP Maximum segment size. */

#ifndef TCP_MSS

#define TCP_MSS (1500 - 40) /* TCP_MSS = (Ethernet MTU - IP header size - TCP header size) */

#endif

/* TCP sender buffer space (bytes). */

#ifndef TCP_SND_BUF

#define TCP_SND_BUF (40 * TCP_MSS)//(6 * TCP_MSS) // 2

#endif

/* TCP sender buffer space (pbufs). This must be at least = 2 *

   TCP_SND_BUF/TCP_MSS for things to work. */

#ifndef TCP_SND_QUEUELEN

#define TCP_SND_QUEUELEN (3 * TCP_SND_BUF) / TCP_MSS // 6

#endif

/* TCP receive window. */

#ifndef TCP_WND

#define TCP_WND (20 * TCP_MSS)//(2 * TCP_MSS)

#endif

/* Enable backlog*/

#ifndef TCP_LISTEN_BACKLOG

#define TCP_LISTEN_BACKLOG 1

#endif

/* ---------- ICMP options ---------- */

#ifndef LWIP_ICMP

#define LWIP_ICMP 1

#endif

/* ---------- DHCP options ---------- */

/* Enable DHCP module. */

#ifndef LWIP_DHCP

#define LWIP_DHCP 1

#endif

/* ---------- UDP options ---------- */

#ifndef LWIP_UDP

#define LWIP_UDP 1

#endif

#ifndef UDP_TTL

#define UDP_TTL 255

#endif

/* ---------- Statistics options ---------- */

#ifndef LWIP_STATS

#define LWIP_STATS 0

#endif

#ifndef LWIP_PROVIDE_ERRNO

#define LWIP_PROVIDE_ERRNO 1

#endif

/* ---------- Checksum options ----------

*/

/*Some MCU allow computing and verifying the IP, UDP, TCP and ICMP checksums by hardware:

 - To use this feature let the following define uncommented.

 - To disable it and process by CPU comment the  the checksum.

*/

//#define CHECKSUM_BY_HARDWARE

#ifdef CHECKSUM_BY_HARDWARE

/* CHECKSUM_GEN_IP==0: Generate checksums by hardware for outgoing IP packets.*/

#define CHECKSUM_GEN_IP 0

/* CHECKSUM_GEN_UDP==0: Generate checksums by hardware for outgoing UDP packets.*/

#define CHECKSUM_GEN_UDP 0

/* CHECKSUM_GEN_TCP==0: Generate checksums by hardware for outgoing TCP packets.*/

#define CHECKSUM_GEN_TCP 0

/* CHECKSUM_CHECK_IP==0: Check checksums by hardware for incoming IP packets.*/

#define CHECKSUM_CHECK_IP 0

/* CHECKSUM_CHECK_UDP==0: Check checksums by hardware for incoming UDP packets.*/

#define CHECKSUM_CHECK_UDP 0

/* CHECKSUM_CHECK_TCP==0: Check checksums by hardware for incoming TCP packets.*/

#define CHECKSUM_CHECK_TCP 0

#else

/* CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.*/

#define CHECKSUM_GEN_IP    1

/* CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.*/

#define CHECKSUM_GEN_UDP   1

/* CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.*/

#define CHECKSUM_GEN_TCP   1

/* CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.*/

#define CHECKSUM_CHECK_IP  1

/* CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.*/

#define CHECKSUM_CHECK_UDP 1

/* CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.*/

#define CHECKSUM_CHECK_TCP 1

#endif

/*DEFAULT_THREAD_STACKSIZE: The stack size used by any other lwIP thread. The stack size value itself is platform-dependent, but is passed to sys_thread_new() when the thread is created. */

#ifndef DEFAULT_THREAD_STACKSIZE

#define DEFAULT_THREAD_STACKSIZE 3000

#endif

/* DEFAULT_THREAD_PRIO: The priority assigned to any other lwIP thread. The priority value itself is platform-dependent, but is passed to sys_thread_new() when the thread is created. */

#ifndef DEFAULT_THREAD_PRIO

#define DEFAULT_THREAD_PRIO 3

#endif

#define LWIP_DEBUG

#ifdef LWIP_DEBUG

#define U8_F  "c"

#define S8_F  "c"

#define X8_F  "02x"

#define U16_F "u"

#define S16_F "d"

#define X16_F "x"

#define U32_F "u"

#define S32_F "d"

#define X32_F "x"

#define SZT_F "u"

#endif

#define TCPIP_MBOX_SIZE        32

#define TCPIP_THREAD_STACKSIZE 1024

#define TCPIP_THREAD_PRIO      8

/* DEFAULT_RAW_RECVMBOX_SIZE: The mailbox size for the incoming packets on a NETCONN_RAW. The queue size value itself is platform-dependent, but is passed to sys_mbox_new() when the recvmbox is created. */

#define DEFAULT_RAW_RECVMBOX_SIZE 12

/* DEFAULT_UDP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a NETCONN_UDP. The queue size value itself is platform-dependent, but is passed to sys_mbox_new() when the recvmbox is created. */

#define DEFAULT_UDP_RECVMBOX_SIZE 12

/* DEFAULT_TCP_RECVMBOX_SIZE: The mailbox size for the incoming packets on a NETCONN_TCP. The queue size value itself is platform-dependent, but is passed to sys_mbox_new() when the recvmbox is created. */

#define DEFAULT_TCP_RECVMBOX_SIZE 12

/** DEFAULT_ACCEPTMBOX_SIZE: The mailbox size for the incoming connections. The queue size value itself is platform-dependent, but is passed to sys_mbox_new() when the acceptmbox is created. */

#define DEFAULT_ACCEPTMBOX_SIZE 12

#if (LWIP_DNS || LWIP_IGMP || LWIP_IPV6) && !defined(LWIP_RAND)

/* When using IGMP or IPv6, LWIP_RAND() needs to be defined to a random-function returning an u32_t random value*/

#include "lwip/arch.h"

u32_t lwip_rand(void);

#define LWIP_RAND() lwip_rand()

#endif

#endif /* __LWIPOPTS_H__ */

/*****END OF FILE****/

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