Also, no matter what the window size and other settings are, we can't
explain why tx stops without any error when the payload is 400 (the pc ACK
properly according to wireshark)
Thanks
>>>>>>>>>>>>>>>>>>>> lwipopts.h >>>>>>>>>>>>>
#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__
/* Include user defined options first */
// #include "conf_eth.h"
#include "conf_lwip_threads.h"
#include "lwip/debug.h"
/* Define default values for unconfigured parameters. */
#define LWIP_NOASSERT 1 // To suppress some errors for now (no debug output)
/* These two control is reclaimer functions should be compiled
in. Should always be turned on (1). */
#define MEM_RECLAIM 1
#define MEMP_RECLAIM 1
/* Platform specific locking */
/*
* enable SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection
* for certain critical regions during buffer allocation, deallocation and
memory
* allocation and deallocation.
*/
#define SYS_LIGHTWEIGHT_PROT 1
/* ---------- Memory options ---------- */
/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
byte alignment -> define MEM_ALIGNMENT to 2. */
#define MEM_ALIGNMENT 4
/* 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. */
#define MEM_SIZE 3 * 1024
/* 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. */
#define MEMP_NUM_PBUF 6
/* Number of raw connection PCBs */
#define MEMP_NUM_RAW_PCB 1
#if (TFTP_USED == 1)
/* ---------- UDP options ---------- */
#define LWIP_UDP 1
#define UDP_TTL 255
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
per active UDP "connection". */
#define MEMP_NUM_UDP_PCB 2
#else
/* ---------- UDP options ---------- */
#define LWIP_UDP 0
#define UDP_TTL 0
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
per active UDP "connection". */
#define MEMP_NUM_UDP_PCB 0
#endif
/* MEMP_NUM_TCP_PCB: the number of simultaneously active TCP connections. */
#define MEMP_NUM_TCP_PCB 2
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 1
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments. */
#define MEMP_NUM_TCP_SEG 9
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active timeouts. */
#define MEMP_NUM_SYS_TIMEOUT 6
/* The following four are used only with the sequential API and can be
set to 0 if the application only will use the raw API. */
/* MEMP_NUM_NETBUF: the number of struct netbufs. */
#define MEMP_NUM_NETBUF 3
/* MEMP_NUM_NETCONN: the number of struct netconns. */
#define MEMP_NUM_NETCONN 4
/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#define PBUF_POOL_SIZE 6
/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE 500
/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a
link level header. */
#define PBUF_LINK_HLEN 16
/* ---------- TCP options ---------- */
#define LWIP_TCP 1
#define TCP_TTL 255
/* TCP receive window. */
#define TCP_WND 1500
/* Controls if TCP should queue segments that arrive out of
order. Define to 0 if your device is low on memory. */
#define TCP_QUEUE_OOSEQ 1
/* TCP Maximum segment size. */
#define TCP_MSS 1500
/* TCP sender buffer space (bytes). */
#define TCP_SND_BUF 2150
/* TCP sender buffer space (pbufs). This must be at least = 2 *
TCP_SND_BUF/TCP_MSS for things to work. */
#define TCP_SND_QUEUELEN 6 * TCP_SND_BUF/TCP_MSS
/* Maximum number of retransmissions of data segments. */
#define TCP_MAXRTX 12
/* Maximum number of retransmissions of SYN segments. */
#define TCP_SYNMAXRTX 4
/**
* 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 6
/**
* 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 6
/**
* 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 6
/**
* 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 6
/* ---------- ARP options ---------- */
#define ARP_TABLE_SIZE 10
#define ARP_QUEUEING 0
/* ---------- IP options ---------- */
/* Define IP_FORWARD to 1 if you wish to have the ability to forward
IP packets across network interfaces. If you are going to run lwIP
on a device with only one network interface, define this to 0. */
#define IP_FORWARD 0
/* If defined to 1, IP options are allowed (but not parsed). If
defined to 0, all packets with IP options are dropped. */
#define IP_OPTIONS 1
/* ---------- ICMP options ---------- */
#define ICMP_TTL 255
/* ---------- DHCP options ---------- */
/* Define LWIP_DHCP to 1 if you want DHCP configuration of
interfaces. DHCP is not implemented in lwIP 0.5.1, however, so
turning this on does currently not work. */
#define LWIP_DHCP 1
/* 1 if you want to do an ARP check on the offered address
(recommended). */
//#define DHCP_DOES_ARP_CHECK 1
/*
------------------------------------
---------- Thread options ----------
------------------------------------
*/
/**
* TCPIP_THREAD_NAME: The name assigned to the main tcpip thread.
*/
#define TCPIP_THREAD_NAME "TCP/IP"
/**
* TCPIP_THREAD_STACKSIZE: The stack size used by the main tcpip thread.
* The stack size value itself is platform-dependent, but is passed to
* sys_thread_new() when the thread is created.
*/
#define TCPIP_THREAD_STACKSIZE lwipINTERFACE_STACK_SIZE
/**
* TCPIP_THREAD_PRIO: The priority assigned to the main tcpip thread.
* The priority value itself is platform-dependent, but is passed to
* sys_thread_new() when the thread is created.
*/
#define TCPIP_THREAD_PRIO lwipINTERFACE_TASK_PRIORITY
/**
* TCPIP_MBOX_SIZE: The mailbox size for the tcpip thread messages
* The queue size value itself is platform-dependent, but is passed to
* sys_mbox_new() when tcpip_init is called.
*/
#define TCPIP_MBOX_SIZE 6
/**
* SLIPIF_THREAD_NAME: The name assigned to the slipif_loop thread.
*/
#define SLIPIF_THREAD_NAME "slipif"
/**
* SLIP_THREAD_STACKSIZE: The stack size used by the slipif_loop thread.
* The stack size value itself is platform-dependent, but is passed to
* sys_thread_new() when the thread is created.
*/
#define SLIPIF_THREAD_STACKSIZE configMINIMAL_STACK_SIZE
/**
* SLIPIF_THREAD_PRIO: The priority assigned to the slipif_loop thread.
* The priority value itself is platform-dependent, but is passed to
* sys_thread_new() when the thread is created.
*/
#define SLIPIF_THREAD_PRIO 1
/**
* PPP_THREAD_NAME: The name assigned to the pppMain thread.
*/
#define PPP_THREAD_NAME "pppMain"
/**
* PPP_THREAD_STACKSIZE: The stack size used by the pppMain thread.
* The stack size value itself is platform-dependent, but is passed to
* sys_thread_new() when the thread is created.
*/
#define PPP_THREAD_STACKSIZE configMINIMAL_STACK_SIZE
/**
* PPP_THREAD_PRIO: The priority assigned to the pppMain thread.
* The priority value itself is platform-dependent, but is passed to
* sys_thread_new() when the thread is created.
*/
#define PPP_THREAD_PRIO 1
/**
* DEFAULT_THREAD_NAME: The name assigned to any other lwIP thread.
*/
#define DEFAULT_THREAD_NAME "lwIP"
/**
* 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.
*/
#define DEFAULT_THREAD_STACKSIZE configMINIMAL_STACK_SIZE
/**
* 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.
*/
#define DEFAULT_THREAD_PRIO 1
/* ---------- Statistics options ---------- */
#define LWIP_STATS 1
#define LWIP_STATS_DISPLAY 1
#if LWIP_STATS
#define LINK_STATS 1
#define IP_STATS 1
#define ICMP_STATS 1
#define UDP_STATS 1
#define TCP_STATS 1
#define MEM_STATS 1
#define MEMP_STATS 1
#define PBUF_STATS 1
#define SYS_STATS 1
#endif /* STATS */
/* ---------- Lwip Debug options ---------- */
#undef LWIP_DEBUG
#define DBG_TYPES_ON 0xff
#define ETHARP_DEBUG DBG_OFF
#define NETIF_DEBUG DBG_OFF
#define PBUF_DEBUG DBG_ON
#define API_LIB_DEBUG DBG_OFF
#define API_MSG_DEBUG DBG_ON
#define SOCKETS_DEBUG DBG_OFF
#define ICMP_DEBUG DBG_OFF
#define INET_DEBUG DBG_OFF
#define IP_DEBUG DBG_OFF
#define IP_REASS_DEBUG DBG_OFF
#define RAW_DEBUG DBG_OFF
#define MEM_DEBUG DBG_OFF
#define MEMP_DEBUG DBG_OFF
#define SYS_DEBUG DBG_OFF
#define TCP_DEBUG DBG_ON
#define TCP_INPUT_DEBUG DBG_OFF
#define TCP_FR_DEBUG DBG_OFF
#define TCP_RTO_DEBUG DBG_OFF
#define TCP_CWND_DEBUG DBG_OFF
#define TCP_WND_DEBUG DBG_OFF
#define TCP_OUTPUT_DEBUG DBG_OFF
#define TCP_RST_DEBUG DBG_OFF
#define TCP_QLEN_DEBUG DBG_OFF
#define UDP_DEBUG DBG_OFF
#define TCPIP_DEBUG DBG_OFF
#define DBG_MIN_LEVEL LWIP_DBG_LEVEL_SEVERE
#endif /* __LWIPOPTS_H__ */
>>>>>>>>>>>>
The reason the 2048-byte payload one is going so slowly is because it's
waiting for the ACK from the other end before sending each packet. The
other end is delaying ACKs (as it should) and so there is a big gap
between packets. Normally this indicates too small a TCP window or send
queue. Can you show us your lwipopts.h settings?
When sending lots of small packets it's not a problem because you get
lots of ACKs back, and so it doesn't wait as long.
Thanks
Kieran
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