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Re: [lwip-users] netconn http server memory problem ?


From: Erkan Ersoy
Subject: Re: [lwip-users] netconn http server memory problem ?
Date: Mon, 23 May 2016 18:45:14 +0000 (UTC)

i am using lwip 1.4.1
freeRTOs 8.2

I am using netconn api I disabled raw api for freeing more memory

layer 2 driver i think you mean ethernetif it is from a example from github  (example is for stm32f107)


my driver stm32_eth file from st examples i think

 ******************************************************************************
  * @file    stm32f2x7_eth.c
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    25-April-2011
  * @brief   This file is the low level driver for STM32F2x7 Ethernet Controller.
  *          This driver does not include low level functions for PTP time-stamp.           
  ******************************************************************************
it is from stm32f207 example (i am using stm32f107)

stm32f107 have 64K memory

my lwipopts.h :

/**
  ******************************************************************************
  * @file    lwipopts.h
  * @author  MCD Application Team
  * @version V1.1.0
  * @date    07-October-2011
  * @brief   lwIP Options Configuration.
  *          This file is based on Utilities\lwip_v1.3.2\src\include\lwip\opt.h
  *          and contains the lwIP configuration for the STM32F2x7 demonstration.
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */

#ifndef __LWIPOPTS_H__
#define __LWIPOPTS_H__

#include "stdlib.h"

#include "Main.h"



/**
 * 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

#define ETHARP_TRUST_IP_MAC     0
#define IP_REASSEMBLY           0
#define IP_FRAG                 0
#define ARP_QUEUEING            0
#define TCP_LISTEN_BACKLOG      0
#define LWIP_DNS                0
#define LWIP_NETIF_STATUS_CALLBACK 1

#define IP_SOF_BROADCAST        1
#define IP_SOF_BROADCAST_RECV   1


#define LWIP_IGMP               0

// this is a must if we use IGMP
#ifdef LWIP_IGMP 
  #define LWIP_RAND() ((u32)rand())
#endif


/**
 * NO_SYS==1: Provides VERY minimal functionality. Otherwise,
 * use lwIP facilities.
 */
#define NO_SYS                  0

/* ---------- 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                (10*1024) //(7*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           10
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
   per active UDP "connection". */
#define MEMP_NUM_UDP_PCB        10
/* MEMP_NUM_TCP_PCB: the number of simulatenously 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 3

/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
   timeouts. */
#define MEMP_NUM_SYS_TIMEOUT    10
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
   segments. */
#define MEMP_NUM_TCP_SEG        12


/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#define PBUF_POOL_SIZE          10

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE       600


/* ---------- TCP options ---------- */
#define LWIP_TCP                1
#define TCP_TTL                 255

/* 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         0

/* TCP Maximum segment size. */
#define TCP_MSS                 (1500 - 40)      /* TCP_MSS = (Ethernet MTU - IP header size - TCP header size) */
//#define TCP_MSS                 536

/* TCP sender buffer space (bytes). */
//
// When TCP_SND_BUF was (4*TCP_MSS) we had problems with memory
// alocation. After reducing it to (3*TCP_MSS) we stopped getting
// memory allocation errors. After more testing with memory allocation
// I have reduced it to 2 * MSS and now it look OK with no memory alloocation
// problems !!!
//
#define TCP_SND_BUF             (2*TCP_MSS)

/*  TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least
  as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. */

#define TCP_SND_QUEUELEN        (6 * (TCP_SND_BUF)/(TCP_MSS))
 
/* TCP receive window. */
#define TCP_WND                 (2*TCP_MSS)


/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
   segments. */
//#define MEMP_NUM_TCP_SEG        20
//#define MEMP_NUM_TCP_SEG        TCP_SND_QUEUELEN // 20  // This was previosly 20 and cause a MEM_ERR it was changed
                                                 // to BE THE SAME SIZE AS TCP_SND_QUEUELEN


/* ---------- ICMP options ---------- */
#define LWIP_ICMP               1


/* ---------- 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

#define LWIP_NETIF_LINK_CALLBACK  1


/* ---------- UDP options ---------- */
#define LWIP_UDP                1
#define UDP_TTL                 255


/* ---------- Statistics options ---------- */
#define LWIP_STATS              0
#define LWIP_PROVIDE_ERRNO      1


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

/*
The STM32F2x7 allows 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.


  !!! for some reason uncommenting this causes PING not to work ???
*/
#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


/*
   ----------------------------------------------
   ---------- Sequential layer options ----------
   ----------------------------------------------
*/
/**
 * LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
 */
#define LWIP_NETCONN                    1

/*
   ------------------------------------
   ---------- Socket options ----------
   ------------------------------------
*/
/**
 * LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
 */
#define LWIP_SOCKET                     0

/*
   -----------------------------------
   ---------- DEBUG options ----------
   -----------------------------------
*/

#define LWIP_DEBUG                      1


/**
 * TCP_SYNMAXRTX: Maximum number of retransmissions of SYN segments.
 */
#define TCP_SYNMAXRTX                   4


/*
   ---------------------------------
   ---------- RAW options ----------
   ---------------------------------
*/
/**
 * LWIP_RAW==1: Enable application layer to hook into the IP layer itself.
 */
#define LWIP_RAW                        0


/**
 * NO_SYS_NO_TIMERS==1: Drop support for sys_timeout when NO_SYS==1
 * Mainly for compatibility to old versions.
 */
#define NO_SYS_NO_TIMERS                0


/*
   ---------------------------------
   ---------- OS options ----------
   ---------------------------------

   !!!!  for some reason when I triad moving the following
         definitions to the head of the file TCP was not functioning ????
*/

#define TCPIP_THREAD_NAME               "tcp/ip"
#define TCPIP_THREAD_STACKSIZE          3000
#define TCPIP_MBOX_SIZE                 5
#define DEFAULT_UDP_RECVMBOX_SIZE       2000
#define DEFAULT_TCP_RECVMBOX_SIZE       2000
#define DEFAULT_ACCEPTMBOX_SIZE         2000
#define TCPIP_THREAD_PRIO               (configMAX_PRIORITIES - 2)        //mainTCP_TASK_PRIORITY



#endif /* __LWIPOPTS_H__ */

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/



From: Sergio R. Caprile <address@hidden>
To: address@hidden
Sent: Monday, May 23, 2016 3:55 PM
Subject: Re: [lwip-users] netconn http server memory problem ?

You have a misconfigured port, a faulty port, and/or a faulty driver.
The echo example should happily work, please post your memory size and
your lwipopts file.
Which version of lwIP are you using ?
Where did you get your port ?
Where did you get your layer-2 driver ?
Which "echo example" did you run, the RAW API or the netconn API ?

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