lwIP
2.1.0
Lightweight IP stack
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#define LWIP_NUM_SYS_TIMEOUT_INTERNAL (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_NUM_TIMEOUTS + (LWIP_IPV6 * (1 + LWIP_IPV6_REASS + LWIP_IPV6_MLD))) |
The number of sys timeouts used by the core stack (not apps) The default number of timeouts is calculated here for all enabled modules.
#define MEMP_NUM_ALTCP_PCB MEMP_NUM_TCP_PCB |
MEMP_NUM_ALTCP_PCB: the number of simultaneously active altcp layer pcbs. (requires the LWIP_ALTCP option) Connections with multiple layers require more than one altcp_pcb (e.g. TLS over TCP requires 2 altcp_pcbs, one for TLS and one for TCP).
#define MEMP_NUM_API_MSG MEMP_NUM_TCPIP_MSG_API |
MEMP_NUM_API_MSG: the number of concurrently active calls to various socket, netconn, and tcpip functions
#define MEMP_NUM_ARP_QUEUE 30 |
MEMP_NUM_ARP_QUEUE: the number of simultaneously queued outgoing packets (pbufs) that are waiting for an ARP request (to resolve their destination address) to finish. (requires the ARP_QUEUEING option)
#define MEMP_NUM_DNS_API_MSG MEMP_NUM_TCPIP_MSG_API |
MEMP_NUM_DNS_API_MSG: the number of concurrently active calls to netconn_gethostbyname
#define MEMP_NUM_FRAG_PBUF 15 |
MEMP_NUM_FRAG_PBUF: the number of IP fragments simultaneously sent (fragments, not whole packets!). This is only used with LWIP_NETIF_TX_SINGLE_PBUF==0 and only has to be > 1 with DMA-enabled MACs where the packet is not yet sent when netif->output returns.
#define MEMP_NUM_IGMP_GROUP 8 |
MEMP_NUM_IGMP_GROUP: The number of multicast groups whose network interfaces can be members at the same time (one per netif - allsystems group -, plus one per netif membership). (requires the LWIP_IGMP option)
#define MEMP_NUM_LOCALHOSTLIST 1 |
MEMP_NUM_LOCALHOSTLIST: the number of host entries in the local host list if DNS_LOCAL_HOSTLIST_IS_DYNAMIC==1.
#define MEMP_NUM_NETBUF 2 |
MEMP_NUM_NETBUF: the number of struct netbufs. (only needed if you use the sequential API, like api_lib.c)
#define MEMP_NUM_NETCONN 4 |
MEMP_NUM_NETCONN: the number of struct netconns. (only needed if you use the sequential API, like api_lib.c)
#define MEMP_NUM_NETDB 1 |
MEMP_NUM_NETDB: the number of concurrently running lwip_addrinfo() calls (before freeing the corresponding memory using lwip_freeaddrinfo()).
#define MEMP_NUM_NETIFAPI_MSG MEMP_NUM_TCPIP_MSG_API |
MEMP_NUM_NETIFAPI_MSG: the number of concurrently active calls to the netifapi functions
#define MEMP_NUM_PBUF 16 |
MEMP_NUM_PBUF: the number of memp struct pbufs (used for PBUF_ROM and PBUF_REF). If the application sends a lot of data out of ROM (or other static memory), this should be set high.
#define MEMP_NUM_RAW_PCB 4 |
MEMP_NUM_RAW_PCB: Number of raw connection PCBs (requires the LWIP_RAW option)
#define MEMP_NUM_REASSDATA 5 |
MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for reassembly (whole packets, not fragments!)
#define MEMP_NUM_SELECT_CB 4 |
MEMP_NUM_SELECT_CB: the number of struct lwip_select_cb. (Only needed if you have LWIP_MPU_COMPATIBLE==1 and use the socket API. In that case, you need one per thread calling lwip_select.)
#define MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA MEMP_NUM_TCPIP_MSG_API |
MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA: the number of concurrently active calls to getsockopt/setsockopt
#define MEMP_NUM_SYS_TIMEOUT LWIP_NUM_SYS_TIMEOUT_INTERNAL |
MEMP_NUM_SYS_TIMEOUT: the number of simultaneously active timeouts. The default number of timeouts is calculated here for all enabled modules. The formula expects settings to be either '0' or '1'.
#define MEMP_NUM_TCP_PCB 5 |
MEMP_NUM_TCP_PCB: the number of simultaneously active TCP connections. (requires the LWIP_TCP option)
#define MEMP_NUM_TCP_PCB_LISTEN 8 |
MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections. (requires the LWIP_TCP option)
#define MEMP_NUM_TCP_SEG 16 |
MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments. (requires the LWIP_TCP option)
#define MEMP_NUM_TCPIP_MSG_API 8 |
MEMP_NUM_TCPIP_MSG_API: the number of struct tcpip_msg, which are used for callback/timeout API communication. (only needed if you use tcpip.c)
#define MEMP_NUM_TCPIP_MSG_INPKT 8 |
MEMP_NUM_TCPIP_MSG_INPKT: the number of struct tcpip_msg, which are used for incoming packets. (only needed if you use tcpip.c)
#define MEMP_NUM_UDP_PCB 4 |
MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One per active UDP "connection". (requires the LWIP_UDP option)
#define PBUF_POOL_SIZE 16 |
PBUF_POOL_SIZE: the number of buffers in the pbuf pool.