FAQs
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

LWIP RX_POOL problem

embedtekin
Associate

‎2024-10-01 01:22 AM - edited ‎2024-10-01 01:29 AM

I am using FreeRTOS and lwIP (callback api) on the STM32F407. I have 1 UDP and 2 TCP ports. After a few hours, the struct pbuf_custom *p = LWIP_MEMPOOL_ALLOC(RX_POOL); operation returns NULL. When I checked the ethernetif.c file, I noticed that the ETH_RX_BUFFER_CNT value is statically defined as 12. Do you think I should increase this value? If I increase it, do I also need to modify the ETH_RX_DESC_CNT , ETH_RXBUFNB and etc. values? Below, I’m sharing the current values and the lwipopts file. Thank you in advance for your help

void HAL_ETH_RxAllocateCallback(uint8_t **buff)
{
/* USER CODE BEGIN HAL ETH RxAllocateCallback */
  struct pbuf_custom *p = LWIP_MEMPOOL_ALLOC(RX_POOL); // THE PROBLEM OCCURS HERE
  if (p)
  {
    /* Get the buff from the struct pbuf address. */
    *buff = (uint8_t *)p + offsetof(RxBuff_t, buff);
    p->custom_free_function = pbuf_free_custom;
    /* Initialize the struct pbuf.
    * This must be performed whenever a buffer's allocated because it may be
    * changed by lwIP or the app, e.g., pbuf_free decrements ref. */
    pbuf_alloced_custom(PBUF_RAW, 0, PBUF_REF, p, *buff, ETH_RX_BUF_SIZE);
  }
  else
  {
    RxAllocStatus = RX_ALLOC_ERROR;
    *buff = NULL;
  }
/* USER CODE END HAL ETH RxAllocateCallback */
}

 

 

/* Definition of the Ethernet driver buffers size and count */
#define ETH_RX_BUF_SIZE                1536 /* buffer size for receive               */
#define ETH_TX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for transmit              */
#define ETH_RXBUFNB                    4U       /* 4 Rx buffers of size ETH_RX_BUF_SIZE  */
#define ETH_TXBUFNB                    4U       /* 4 Tx buffers of size ETH_TX_BUF_SIZE  */

 

 

 

/* Exported types ------------------------------------------------------------*/
#ifndef ETH_TX_DESC_CNT
#define ETH_TX_DESC_CNT         4U
#endif /* ETH_TX_DESC_CNT */

#ifndef ETH_RX_DESC_CNT
#define ETH_RX_DESC_CNT         4U
#endif /* ETH_RX_DESC_CNT */

 

 

 

/* Memory Pool Declaration */
#define ETH_RX_BUFFER_CNT             12U
LWIP_MEMPOOL_DECLARE(RX_POOL, ETH_RX_BUFFER_CNT, sizeof(RxBuff_t), "Zero-copy RX PBUF pool");

 

 

 

/* STM32CubeMX Specific Parameters (not defined in opt.h) ---------------------*/
/* Parameters set in STM32CubeMX LwIP Configuration GUI -*/
/*----- WITH_RTOS enabled (Since FREERTOS is set) -----*/
#define WITH_RTOS 1
/*----- CHECKSUM_BY_HARDWARE enabled -----*/
#define CHECKSUM_BY_HARDWARE 1
/*-----------------------------------------------------------------------------*/

/* LwIP Stack Parameters (modified compared to initialization value in opt.h) -*/
/* Parameters set in STM32CubeMX LwIP Configuration GUI -*/
/*----- Value in opt.h for LWIP_DHCP: 0 -----*/
#define LWIP_DHCP 1
/*----- Default Value for MEMP_NUM_UDP_PCB: 4 ---*/
#define MEMP_NUM_UDP_PCB 5
/*----- Default Value for MEMP_NUM_TCP_PCB: 5 ---*/
#define MEMP_NUM_TCP_PCB 6
/*----- Value in opt.h for MEM_ALIGNMENT: 1 -----*/
#define MEM_ALIGNMENT 4
/*----- Default Value for MEM_SIZE: 1600 ---*/
#define MEM_SIZE 7000
/*----- Default Value for MEMP_NUM_RAW_PCB: 4 ---*/
#define MEMP_NUM_RAW_PCB 0
/*----- Default Value for MEMP_NUM_TCP_PCB_LISTEN: 8 ---*/
#define MEMP_NUM_TCP_PCB_LISTEN 3
/*----- Default Value for MEMP_NUM_IGMP_GROUP: 8 ---*/
#define MEMP_NUM_IGMP_GROUP 0
/*----- Default Value for MEMP_NUM_SYS_TIMEOUT: 5 ---*/
#define MEMP_NUM_SYS_TIMEOUT 12
/*----- Default Value for MEMP_NUM_NETBUF: 2 ---*/
#define MEMP_NUM_NETBUF 0
/*----- Default Value for MEMP_NUM_NETCONN: 4 ---*/
#define MEMP_NUM_NETCONN 0
/*----- Default Value for MEMP_NUM_TCPIP_MSG_API: 8 ---*/
#define MEMP_NUM_TCPIP_MSG_API 12
/*----- Default Value for MEMP_NUM_SELECT_CB: 4 ---*/
#define MEMP_NUM_SELECT_CB 0
/*----- Default Value for MEMP_NUM_TCPIP_MSG_INPKT: 8 ---*/
#define MEMP_NUM_TCPIP_MSG_INPKT 30
/*----- Default Value for MEMP_NUM_NETDB: 1 ---*/
#define MEMP_NUM_NETDB 0
/*----- Default Value for MEMP_NUM_LOCALHOSTLIST: 1 ---*/
#define MEMP_NUM_LOCALHOSTLIST 0
/*----- Default Value for PBUF_POOL_SIZE: 16 ---*/
#define PBUF_POOL_SIZE 14
/*----- Default Value for PBUF_LINK_HLEN: 14 ---*/
#define PBUF_LINK_HLEN 15
/*----- Default Value for PBUF_POOL_BUFSIZE: 592 ---*/
#define PBUF_POOL_BUFSIZE 1514
/*----- Value in opt.h for LWIP_ETHERNET: LWIP_ARP || PPPOE_SUPPORT -*/
#define LWIP_ETHERNET 1
/*----- Default Value for ETHARP_SUPPORT_STATIC_ENTRIES: 0 ---*/
#define ETHARP_SUPPORT_STATIC_ENTRIES 1
/*----- Value in opt.h for LWIP_DNS_SECURE: (LWIP_DNS_SECURE_RAND_XID | LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING | LWIP_DNS_SECURE_RAND_SRC_PORT) -*/
#define LWIP_DNS_SECURE 7
/*----- Default Value for TCP_MSS: 536 ---*/
#define TCP_MSS 1460
/*----- Default Value for TCP_SND_BUF: 2920 ---*/
#define TCP_SND_BUF 5840
/*----- Default Value for TCP_SND_QUEUELEN: 17 ---*/
#define TCP_SND_QUEUELEN 16
/*----- Default Value for TCP_WND_UPDATE_THRESHOLD: 1460 ---*/
#define TCP_WND_UPDATE_THRESHOLD 5840
/*----- Value in opt.h for TCPIP_THREAD_STACKSIZE: 0 -----*/
#define TCPIP_THREAD_STACKSIZE 2048
/*----- Value in opt.h for TCPIP_THREAD_PRIO: 1 -----*/
#define TCPIP_THREAD_PRIO osPriorityNormal
/*----- Value in opt.h for TCPIP_MBOX_SIZE: 0 -----*/
#define TCPIP_MBOX_SIZE 25
/*----- Value in opt.h for SLIPIF_THREAD_STACKSIZE: 0 -----*/
#define SLIPIF_THREAD_STACKSIZE 2048
/*----- Value in opt.h for SLIPIF_THREAD_PRIO: 1 -----*/
#define SLIPIF_THREAD_PRIO 3
/*----- Value in opt.h for DEFAULT_THREAD_STACKSIZE: 0 -----*/
#define DEFAULT_THREAD_STACKSIZE 1024
/*----- Value in opt.h for DEFAULT_THREAD_PRIO: 1 -----*/
#define DEFAULT_THREAD_PRIO 3
/*----- Default Value for DEFAULT_RAW_RECVMBOX_SIZE: 0 ---*/
#define DEFAULT_RAW_RECVMBOX_SIZE 25
/*----- Value in opt.h for DEFAULT_UDP_RECVMBOX_SIZE: 0 -----*/
#define DEFAULT_UDP_RECVMBOX_SIZE 25
/*----- Value in opt.h for DEFAULT_TCP_RECVMBOX_SIZE: 0 -----*/
#define DEFAULT_TCP_RECVMBOX_SIZE 25
/*----- Value in opt.h for DEFAULT_ACCEPTMBOX_SIZE: 0 -----*/
#define DEFAULT_ACCEPTMBOX_SIZE 25
/*----- Default Value for LWIP_TCPIP_TIMEOUT: 0 ---*/
#define LWIP_TCPIP_TIMEOUT 1
/*----- Value in opt.h for LWIP_SOCKET: 1 -----*/
#define LWIP_SOCKET 0
/*----- Default Value for LWIP_TCP_KEEPALIVE: 0 ---*/
#define LWIP_TCP_KEEPALIVE 1
/*----- Default Value for LWIP_SO_RCVTIMEO: 0 ---*/
#define LWIP_SO_RCVTIMEO 1
/*----- Value in opt.h for RECV_BUFSIZE_DEFAULT: INT_MAX -----*/
#define RECV_BUFSIZE_DEFAULT 2000000000
/*----- Default Value for SO_REUSE: 0 ---*/
#define SO_REUSE 1
/*----- Default Value for LWIP_SOCKET_SELECT: 1 ---*/
#define LWIP_SOCKET_SELECT 0
/*----- Default Value for LWIP_SOCKET_POLL: 1 ---*/
#define LWIP_SOCKET_POLL 0
/*----- Default Value for LWIP_STATS: 0 ---*/
#define LWIP_STATS 1
/*----- Default Value for LWIP_STATS_DISPLAY: 0 ---*/
#define LWIP_STATS_DISPLAY 1
/*----- Value in opt.h for MIB2_STATS: 0 or SNMP_LWIP_MIB2 -----*/
#define MIB2_STATS 0
/*----- Value in opt.h for CHECKSUM_GEN_IP: 1 -----*/
#define CHECKSUM_GEN_IP 0
/*----- Value in opt.h for CHECKSUM_GEN_UDP: 1 -----*/
#define CHECKSUM_GEN_UDP 0
/*----- Value in opt.h for CHECKSUM_GEN_TCP: 1 -----*/
#define CHECKSUM_GEN_TCP 0
/*----- Value in opt.h for CHECKSUM_GEN_ICMP: 1 -----*/
#define CHECKSUM_GEN_ICMP 0
/*----- Value in opt.h for CHECKSUM_GEN_ICMP6: 1 -----*/
#define CHECKSUM_GEN_ICMP6 0
/*----- Value in opt.h for CHECKSUM_CHECK_IP: 1 -----*/
#define CHECKSUM_CHECK_IP 0
/*----- Value in opt.h for CHECKSUM_CHECK_UDP: 1 -----*/
#define CHECKSUM_CHECK_UDP 0
/*----- Value in opt.h for CHECKSUM_CHECK_TCP: 1 -----*/
#define CHECKSUM_CHECK_TCP 0
/*----- Value in opt.h for CHECKSUM_CHECK_ICMP: 1 -----*/
#define CHECKSUM_CHECK_ICMP 0
/*----- Value in opt.h for CHECKSUM_CHECK_ICMP6: 1 -----*/
#define CHECKSUM_CHECK_ICMP6 0
/*-----------------------------------------------------------------------------*/
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

 

 

 

Labels:
0 Kudos
0 REPLIES 0
Top