Internal memory pools

Collaboration diagram for Internal memory pools:

Macros
#define	MEMP_NUM_PBUF   16
#define	MEMP_NUM_RAW_PCB   4
#define	MEMP_NUM_UDP_PCB   4
#define	MEMP_NUM_TCP_PCB   5
#define	MEMP_NUM_TCP_PCB_LISTEN   8
#define	MEMP_NUM_TCP_SEG   16
#define	MEMP_NUM_REASSDATA   5
#define	MEMP_NUM_FRAG_PBUF   15
#define	MEMP_NUM_ARP_QUEUE   30
#define	MEMP_NUM_IGMP_GROUP   8
#define	MEMP_NUM_SYS_TIMEOUT   (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + (PPP_SUPPORT*6*MEMP_NUM_PPP_PCB) + (LWIP_IPV6 ? (1 + LWIP_IPV6_REASS + LWIP_IPV6_MLD) : 0))
#define	MEMP_NUM_NETBUF   2
#define	MEMP_NUM_NETCONN   4
#define	MEMP_NUM_TCPIP_MSG_API   8
#define	MEMP_NUM_TCPIP_MSG_INPKT   8
#define	MEMP_NUM_NETDB   1
#define	MEMP_NUM_LOCALHOSTLIST   1
#define	PBUF_POOL_SIZE   16
#define	MEMP_NUM_API_MSG   MEMP_NUM_TCPIP_MSG_API
#define	MEMP_NUM_DNS_API_MSG   MEMP_NUM_TCPIP_MSG_API
#define	MEMP_NUM_SOCKET_SETGETSOCKOPT_DATA   MEMP_NUM_TCPIP_MSG_API
#define	MEMP_NUM_NETIFAPI_MSG   MEMP_NUM_TCPIP_MSG_API

Detailed Description

Macro Definition Documentation

#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

Definition at line 521 of file opt.h.

#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)

Definition at line 438 of file opt.h.

#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

Definition at line 527 of file opt.h.

#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.

Definition at line 428 of file opt.h.

#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)

Definition at line 448 of file opt.h.

#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.

Definition at line 507 of file opt.h.

#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)

Definition at line 465 of file opt.h.

#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)

Definition at line 473 of file opt.h.

#define MEMP_NUM_NETDB   1

MEMP_NUM_NETDB: the number of concurrently running lwip_addrinfo() calls (before freeing the corresponding memory using lwip_freeaddrinfo()).

Definition at line 499 of file opt.h.

#define MEMP_NUM_NETIFAPI_MSG   MEMP_NUM_TCPIP_MSG_API

MEMP_NUM_NETIFAPI_MSG: the number of concurrently active calls to the netifapi functions

Definition at line 541 of file opt.h.

#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.

Definition at line 368 of file opt.h.

#define MEMP_NUM_RAW_PCB   4

MEMP_NUM_RAW_PCB: Number of raw connection PCBs (requires the LWIP_RAW option)

Definition at line 376 of file opt.h.

#define MEMP_NUM_REASSDATA   5

MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for reassembly (whole packets, not fragments!)

Definition at line 417 of file opt.h.

#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

Definition at line 534 of file opt.h.

#define MEMP_NUM_SYS_TIMEOUT   (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + (PPP_SUPPORT*6*MEMP_NUM_PPP_PCB) + (LWIP_IPV6 ? (1 + LWIP_IPV6_REASS + LWIP_IPV6_MLD) : 0))

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'.

Definition at line 457 of file opt.h.

#define MEMP_NUM_TCP_PCB   5

MEMP_NUM_TCP_PCB: the number of simultaneously active TCP connections. (requires the LWIP_TCP option)

Definition at line 393 of file opt.h.

#define MEMP_NUM_TCP_PCB_LISTEN   8

MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections. (requires the LWIP_TCP option)

Definition at line 401 of file opt.h.

#define MEMP_NUM_TCP_SEG   16

MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments. (requires the LWIP_TCP option)

Definition at line 409 of file opt.h.

#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)

Definition at line 482 of file opt.h.

#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)

Definition at line 491 of file opt.h.

#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)

Definition at line 385 of file opt.h.

#define PBUF_POOL_SIZE   16

PBUF_POOL_SIZE: the number of buffers in the pbuf pool.

Definition at line 514 of file opt.h.