328 lines
12 KiB
C
328 lines
12 KiB
C
/**
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* @file lwipopts.h
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* @brief LwIP configuration for STM32F103RCT6 + FreeRTOS + CH390 Ethernet
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*
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* Path A: NO_SYS=0, netconn API, multi-task TCP architecture.
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* Optimized for STM32F103RCT6 (48KB SRAM) with pin-to-pin backup STM32F103RDT6 (64KB SRAM).
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*
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* Key design decisions:
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* - netconn API for thread-safe multi-connection TCP
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* - tcpip_thread handles all lwIP core operations
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* - LWIP_TCPIP_CORE_LOCKING=1 allows direct send from application tasks
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* - Conservative memory footprint: target ~16KB for lwIP
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*/
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#ifndef LWIP_LWIPOPTS_H
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#define LWIP_LWIPOPTS_H
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/*-----------------------------------------------------------------------------
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* Platform and OS Options
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*---------------------------------------------------------------------------*/
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/* Use FreeRTOS - this enables the sequential API (netconn, sockets) */
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#define NO_SYS 0
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/* Enable netconn API (primary), disable socket API to save RAM */
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#define LWIP_SOCKET 0
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#define LWIP_NETCONN 1
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#define LWIP_NETIF_API 1
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/* Core locking: allows netconn_write/recv from any task without going through mbox */
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#define LWIP_TCPIP_CORE_LOCKING 1
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#define LWIP_TCPIP_CORE_LOCKING_INPUT 0
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/* Critical section protection */
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#define SYS_LIGHTWEIGHT_PROT 1
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/* Use FreeRTOS memory allocation */
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#define MEM_LIBC_MALLOC 0
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#define MEMP_MEM_MALLOC 0
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/* Let lwIP provide the errno values used by sockets/netconn. */
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#define LWIP_PROVIDE_ERRNO 1
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/*-----------------------------------------------------------------------------
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* Memory Configuration (optimized for STM32F103RCT6 with 48KB SRAM)
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*---------------------------------------------------------------------------*/
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/* Memory alignment (ARM Cortex-M3 = 4 byte alignment) */
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#define MEM_ALIGNMENT 4
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/* Heap size for dynamic memory allocation.
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* With netconn: larger heap needed for netbuf allocation and connection management.
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* 8KB provides headroom for 4 concurrent TCP connections. */
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#define MEM_SIZE (7 * 1024)
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/* Number of pbufs in pool.
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* 10 pools for 4 concurrent connections with some headroom. */
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#define PBUF_POOL_SIZE 8
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/* Size of each pbuf in pool (must hold one Ethernet frame) */
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#define PBUF_POOL_BUFSIZE LWIP_MEM_ALIGN_SIZE(TCP_MSS + 40 + PBUF_LINK_ENCAPSULATION_HLEN + PBUF_LINK_HLEN)
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/* Number of memp struct pbufs */
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#define MEMP_NUM_PBUF 8
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/* Number of raw PCBs */
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#define MEMP_NUM_RAW_PCB 2
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/* Number of UDP PCBs */
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#define MEMP_NUM_UDP_PCB 4
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/* Number of simultaneously active TCP connections */
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#define MEMP_NUM_TCP_PCB 4
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/* Number of listening TCP connections */
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#define MEMP_NUM_TCP_PCB_LISTEN 2
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/* Number of simultaneously queued TCP segments
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* Increased for 4 concurrent connections */
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#define MEMP_NUM_TCP_SEG 12
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/* Number of simultaneously active timeouts */
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#define MEMP_NUM_SYS_TIMEOUT 12
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/* Number of netbufs (for netconn API, one per pending recv) */
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#define MEMP_NUM_NETBUF 8
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/* Number of netconns: 2 listeners + 2 accepted + 2 clients + 2 margin = 8 */
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#define MEMP_NUM_NETCONN 8
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/* TCPIP message queue size (must be >= max simultaneous API calls) */
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#define MEMP_NUM_TCPIP_MSG_API 8
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#define MEMP_NUM_TCPIP_MSG_INPKT 8
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/*-----------------------------------------------------------------------------
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* IP Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_IPV4 1
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#define LWIP_IPV6 0
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/* No IP forwarding (single interface device) */
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#define IP_FORWARD 0
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/* IP fragment reassembly */
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#define IP_REASSEMBLY 0
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#define IP_FRAG 0
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/* IP options processing */
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#define IP_OPTIONS_ALLOWED 1
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/*-----------------------------------------------------------------------------
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* ICMP Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_ICMP 1
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#define ICMP_TTL 255
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/*-----------------------------------------------------------------------------
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* ARP Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_ARP 1
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#define ARP_TABLE_SIZE 10
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#define ARP_QUEUEING 1
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#define ETHARP_SUPPORT_STATIC_ENTRIES 1
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/*-----------------------------------------------------------------------------
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* DHCP Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_DHCP 0 /* Static IP only */
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#define DHCP_DOES_ARP_CHECK 0
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/*-----------------------------------------------------------------------------
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* UDP Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_UDP 0 /* UDP not used in this project */
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/*-----------------------------------------------------------------------------
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* TCP Configuration (optimized for transparent transmission)
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*---------------------------------------------------------------------------*/
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#define LWIP_TCP 1
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#define TCP_TTL 255
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/* TCP Maximum Segment Size */
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#define TCP_MSS 536 /* Conservative value for compatibility */
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/* TCP sender buffer space - increased for bridge throughput */
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#define TCP_SND_BUF (2 * TCP_MSS)
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/* TCP sender buffer space (pbufs) */
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#define TCP_SND_QUEUELEN ((4 * (TCP_SND_BUF) + (TCP_MSS - 1)) / (TCP_MSS))
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/*
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* Temporary phase-1 exception: current TCP queue sizing trips lwIP's compile-time
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* sanity guard on this memory-constrained target. Keep the bypass in project
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* configuration instead of patching lwIP core source logic.
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*/
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#define LWIP_DISABLE_TCP_SANITY_CHECKS 1
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/* TCP receive window - increased for bridge throughput */
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#define TCP_WND (2 * TCP_MSS)
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/* TCP writable space threshold */
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#define TCP_SNDLOWAT LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1)
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/* Enable TCP keepalive */
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#define LWIP_TCP_KEEPALIVE 1
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/* TCP segment queue handling */
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#define TCP_QUEUE_OOSEQ 0 /* Disable out-of-order segment queuing to save RAM */
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/* Maximum number of retransmissions */
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#define TCP_MAXRTX 12
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#define TCP_SYNMAXRTX 6
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/* TCP listen backlog */
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#define TCP_LISTEN_BACKLOG 1
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/* TCP timestamp option */
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#define LWIP_TCP_TIMESTAMPS 0
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/*-----------------------------------------------------------------------------
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* RAW API (used for ping, etc.)
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*---------------------------------------------------------------------------*/
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#define LWIP_RAW 1
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/*-----------------------------------------------------------------------------
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* DNS Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_DNS 0 /* Disable DNS to save RAM */
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/*-----------------------------------------------------------------------------
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* IGMP Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_IGMP 0 /* Disable IGMP to save RAM */
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/*-----------------------------------------------------------------------------
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* Callback Configuration
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*---------------------------------------------------------------------------*/
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#define LWIP_NETIF_STATUS_CALLBACK 0
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#define LWIP_NETIF_LINK_CALLBACK 0
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/*-----------------------------------------------------------------------------
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* Checksum Configuration
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*---------------------------------------------------------------------------*/
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/* Use software checksums (CH390 doesn't have checksum offload) */
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#define CHECKSUM_GEN_IP 1
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#define CHECKSUM_GEN_UDP 1
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#define CHECKSUM_GEN_TCP 1
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#define CHECKSUM_GEN_ICMP 1
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#define CHECKSUM_CHECK_IP 1
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#define CHECKSUM_CHECK_UDP 1
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#define CHECKSUM_CHECK_TCP 1
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#define CHECKSUM_CHECK_ICMP 1
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/*-----------------------------------------------------------------------------
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* Statistics (disabled to save RAM)
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*---------------------------------------------------------------------------*/
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#define LWIP_STATS 0
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#define LWIP_STATS_DISPLAY 0
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/*-----------------------------------------------------------------------------
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* Debug Options (disabled for production)
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*---------------------------------------------------------------------------*/
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#define LWIP_DEBUG 0
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#if LWIP_DEBUG
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#define LWIP_DBG_MIN_LEVEL LWIP_DBG_LEVEL_ALL
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#define LWIP_DBG_TYPES_ON LWIP_DBG_ON
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#define ETHARP_DEBUG LWIP_DBG_OFF
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#define NETIF_DEBUG LWIP_DBG_OFF
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#define PBUF_DEBUG LWIP_DBG_OFF
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#define API_LIB_DEBUG LWIP_DBG_OFF
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#define API_MSG_DEBUG LWIP_DBG_OFF
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#define SOCKETS_DEBUG LWIP_DBG_OFF
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#define ICMP_DEBUG LWIP_DBG_OFF
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#define IGMP_DEBUG LWIP_DBG_OFF
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#define INET_DEBUG LWIP_DBG_OFF
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#define IP_DEBUG LWIP_DBG_OFF
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#define IP_REASS_DEBUG LWIP_DBG_OFF
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#define RAW_DEBUG LWIP_DBG_OFF
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#define MEM_DEBUG LWIP_DBG_OFF
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#define MEMP_DEBUG LWIP_DBG_OFF
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#define SYS_DEBUG LWIP_DBG_OFF
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#define TIMERS_DEBUG LWIP_DBG_OFF
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#define TCP_DEBUG LWIP_DBG_OFF
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#define TCP_INPUT_DEBUG LWIP_DBG_OFF
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#define TCP_FR_DEBUG LWIP_DBG_OFF
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#define TCP_RTO_DEBUG LWIP_DBG_OFF
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#define TCP_CWND_DEBUG LWIP_DBG_OFF
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#define TCP_WND_DEBUG LWIP_DBG_OFF
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#define TCP_OUTPUT_DEBUG LWIP_DBG_OFF
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#define TCP_RST_DEBUG LWIP_DBG_OFF
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#define TCP_QLEN_DEBUG LWIP_DBG_OFF
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#define UDP_DEBUG LWIP_DBG_OFF
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#define TCPIP_DEBUG LWIP_DBG_OFF
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#define DHCP_DEBUG LWIP_DBG_OFF
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#endif /* LWIP_DEBUG */
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/*-----------------------------------------------------------------------------
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* FreeRTOS Specific Options
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*---------------------------------------------------------------------------*/
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/* Task stack sizes */
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#define TCPIP_THREAD_STACKSIZE 512
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#define TCPIP_THREAD_PRIO (configMAX_PRIORITIES - 2)
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#define DEFAULT_THREAD_STACKSIZE 256
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#define DEFAULT_THREAD_PRIO (configMAX_PRIORITIES - 3)
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/* Mailbox sizes */
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#define TCPIP_MBOX_SIZE 12
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#define DEFAULT_RAW_RECVMBOX_SIZE 4
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#define DEFAULT_UDP_RECVMBOX_SIZE 4
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#define DEFAULT_TCP_RECVMBOX_SIZE 6
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#define DEFAULT_ACCEPTMBOX_SIZE 6
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/* Thread name length */
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#define LWIP_NETCONN_SEM_PER_THREAD 1
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/*-----------------------------------------------------------------------------
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* Ethernet Specific
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*---------------------------------------------------------------------------*/
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/* Ethernet MTU */
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#define LWIP_ETHERNET 1
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/* Link layer header overhead */
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#define PBUF_LINK_HLEN 14 /* Ethernet header size */
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#define PBUF_LINK_ENCAPSULATION_HLEN 0
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/* Use static Ethernet address (configured at runtime) */
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#define LWIP_NETIF_HOSTNAME 1
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/*-----------------------------------------------------------------------------
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* Socket Options
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*---------------------------------------------------------------------------*/
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#define LWIP_SO_SNDTIMEO 1
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#define LWIP_SO_RCVTIMEO 1
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#define LWIP_SO_RCVBUF 0
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#define SO_REUSE 1
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/*-----------------------------------------------------------------------------
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* Additional Options
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*---------------------------------------------------------------------------*/
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/* Enable loop interface for testing */
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#define LWIP_HAVE_LOOPIF 0
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#define LWIP_NETIF_LOOPBACK 0
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/* Random number generator (required for some TCP operations) */
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#define LWIP_RAND() ((uint32_t)rand())
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#endif /* LWIP_LWIPOPTS_H */
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