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e36ddaf659
Rename LwIP library in preparation for removal of LwIP libc plugin. The current LwIP library will be replaced with a new version stripped of its synchronous socket support. The next version will be incompatible with the current, so removing 'lwip.lib.so' completely for a period makes it easy to identify legacy users. Fix #2797
142 lines
5.7 KiB
C
142 lines
5.7 KiB
C
/*
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* \brief Configuration file for LwIP, adapt it to your needs.
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* \author Stefan Kalkowski
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* \date 2009-11-10
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*/
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/*
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* Copyright (C) 2009-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef __LWIP__LWIPOPTS_H__
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#define __LWIP__LWIPOPTS_H__
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#include <stdlib.h>
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#include <string.h>
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#define NO_SYS 0 /* single-threaded? do not touch! */
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#define SYS_LIGHTWEIGHT_PROT 1 /* do we provide lightweight protection */
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#define LWIP_ARP 1 /* ARP support */
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#define LWIP_RAW 0 /* LwIP raw API */
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#define LWIP_UDP 1 /* UDP support */
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#define LWIP_TCP 1 /* TCP support */
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#define LWIP_ICMP 1 /* ICMP support */
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#define LWIP_DNS 1 /* DNS support */
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#define LWIP_DHCP 1 /* DHCP support */
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#define LWIP_SOCKET 1 /* LwIP socket API */
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#define LWIP_COMPAT_SOCKETS 0 /* Libc compatibility layer */
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#define LWIP_COMPAT_MUTEX 1 /* use binary semaphore instead of mutex */
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#define LWIP_NETIF_API 1 /* Network interface API */
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#define LWIP_NETIF_LOOPBACK 1 /* Looping back to same address? */
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#define LWIP_HAVE_LOOPIF 1 /* 127.0.0.1 support ? */
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#define LWIP_STATS 0 /* disable stating */
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#define LWIP_STATS_DISPLAY 0 /* disable stating display function */
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#define LWIP_SO_RCVTIMEO 1 /* support timeouts for socket recv */
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#define LWIP_SO_SNDTIMEO 1 /* support timeouts for socket send */
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#define LWIP_TCP_TIMESTAMPS 1
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#define LWIP_SO_RCVBUF 1 /* enable SO_RCVBUF */
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#define SO_REUSE 1 /* enable SO_REUSE */
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#define LWIP_WND_SCALE 1 /* enable window scaling */
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#define TCP_RCV_SCALE 2 /* receive scale factor IETF RFC 1323 */
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#if LWIP_DHCP
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#define LWIP_NETIF_STATUS_CALLBACK 1 /* callback function used for interface changes */
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#define LWIP_NETIF_LINK_CALLBACK 1 /* callback function used for link-state changes */
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#endif
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/***********************************
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** Checksum calculation settings **
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***********************************/
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/* checksum calculation for outgoing packets can be disabled if the hardware supports it */
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#define CHECKSUM_GEN_IP 1 /* calculate checksum for outgoing IP packets */
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#define CHECKSUM_GEN_TCP 1 /* calculate checksum for outgoing TCP packets */
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#define CHECKSUM_CHECK_IP 1 /* check checksum of incoming IP packets */
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#define CHECKSUM_CHECK_TCP 1 /* check checksum of incoming TCP packets */
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#define LWIP_CHECKSUM_ON_COPY 1 /* calculate checksum during memcpy */
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/*********************
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** Memory settings **
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*********************/
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#define MEM_LIBC_MALLOC 1
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#define MEMP_MEM_MALLOC 1
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/* MEM_ALIGNMENT > 4 e.g. for x86_64 are not supported, see Genode issue #817 */
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#define MEM_ALIGNMENT 4
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#define DEFAULT_ACCEPTMBOX_SIZE 128
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#define TCPIP_MBOX_SIZE 128
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#define TCP_MSS 1460
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/*
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* The TCP window scaling is implemented for servers only, while the client
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* implementation just uses the lower 16 bits of the TCP_WND configuration
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* value. We, therefore, maximize the TCP_WND value to ~64K.
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*/
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#define TCP_WND ((96 * TCP_MSS) & 0xffff)
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/*
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* The window scale option (http://tools.ietf.org/html/rfc1323) patch of lwIP
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* definitely works solely for the receive window, not for the send window.
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* Setting the send window size to the maximum of an 16bit value, 65535,
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* or multiple of it (x * 65536 - 1) results in the same performance.
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* Everything else decrease performance.
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*/
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#define TCP_SND_BUF (65535)
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#define TCP_SND_QUEUELEN ((32 * (TCP_SND_BUF) + (TCP_MSS - 1))/(TCP_MSS))
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#define RECV_BUFSIZE_DEFAULT (512*1024)
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#define PBUF_POOL_SIZE 96
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/*
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* We reduce the maximum segment lifetime from one minute to one second to
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* avoid queuing up PCBs in TIME-WAIT state. This is the state, PCBs end up
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* after closing a TCP connection socket at the server side. The number of PCBs
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* in this state is apparently not limited by the value of 'MEMP_NUM_TCP_PCB'.
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* One allocation costs around 160 bytes. If clients connect to the server at a
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* high rate, those allocations accumulate quickly and thereby may exhaust the
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* memory of the server. By reducing the segment lifetime, PCBs in TIME-WAIT
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* state are cleaned up from the 'tcp_tw_pcbs' queue in a more timely fashion
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* (by 'tcp_slowtmr()').
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*/
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#define TCP_MSL 1000UL
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#define MEMP_NUM_SYS_TIMEOUT 16
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#define MEMP_NUM_TCP_PCB 128
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#define MEMP_NUM_NETCONN (MEMP_NUM_TCP_PCB + MEMP_NUM_UDP_PCB + MEMP_NUM_RAW_PCB + MEMP_NUM_TCP_PCB_LISTEN - 1)
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void genode_memcpy(void * dst, const void *src, unsigned long size);
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#define MEMCPY(dst,src,len) genode_memcpy(dst,src,len)
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/********************
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** Debug settings **
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********************/
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/* #define LWIP_DEBUG */
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/* #define DHCP_DEBUG LWIP_DBG_ON */
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/* #define ETHARP_DEBUG LWIP_DBG_ON */
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/* #define NETIF_DEBUG LWIP_DBG_ON */
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/* #define PBUF_DEBUG LWIP_DBG_ON */
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/* #define API_LIB_DEBUG LWIP_DBG_ON */
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/* #define API_MSG_DEBUG LWIP_DBG_ON */
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/* #define SOCKETS_DEBUG LWIP_DBG_ON */
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/* #define ICMP_DEBUG LWIP_DBG_ON */
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/* #define INET_DEBUG LWIP_DBG_ON */
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/* #define IP_DEBUG LWIP_DBG_ON */
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/* #define IP_REASS_DEBUG LWIP_DBG_ON */
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/* #define RAW_DEBUG LWIP_DBG_ON */
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/* #define MEM_DEBUG LWIP_DBG_ON */
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/* #define MEMP_DEBUG LWIP_DBG_ON */
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/* #define SYS_DEBUG LWIP_DBG_ON */
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/* #define TCP_DEBUG LWIP_DBG_ON */
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#endif /* __LWIP__LWIPOPTS_H__ */
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