diff options
Diffstat (limited to 'net/ipv4/Kconfig')
| -rw-r--r-- | net/ipv4/Kconfig | 182 |
1 files changed, 85 insertions, 97 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 691268f3a35..05c57f0fcab 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -9,10 +9,7 @@ config IP_MULTICAST intend to participate in the MBONE, a high bandwidth network on top of the Internet which carries audio and video broadcasts. More information about the MBONE is on the WWW at - <http://www.savetz.com/mbone/>. Information about the multicast - capabilities of the various network cards is contained in - <file:Documentation/networking/multicast.txt>. For most people, it's - safe to say N. + <http://www.savetz.com/mbone/>. For most people, it's safe to say N. config IP_ADVANCED_ROUTER bool "IP: advanced router" @@ -35,7 +32,7 @@ config IP_ADVANCED_ROUTER at boot time after the /proc file system has been mounted. - If you turn on IP forwarding, you will also get the rp_filter, which + If you turn on IP forwarding, you should consider the rp_filter, which automatically rejects incoming packets if the routing table entry for their source address doesn't match the network interface they're arriving on. This has security advantages because it prevents the @@ -46,48 +43,18 @@ config IP_ADVANCED_ROUTER rp_filter on use: echo 1 > /proc/sys/net/ipv4/conf/<device>/rp_filter - or + or echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter - If unsure, say N here. - -choice - prompt "Choose IP: FIB lookup algorithm (choose FIB_HASH if unsure)" - depends on IP_ADVANCED_ROUTER - default ASK_IP_FIB_HASH + Note that some distributions enable it in startup scripts. + For details about rp_filter strict and loose mode read + <file:Documentation/networking/ip-sysctl.txt>. -config ASK_IP_FIB_HASH - bool "FIB_HASH" - ---help--- - Current FIB is very proven and good enough for most users. - -config IP_FIB_TRIE - bool "FIB_TRIE" - ---help--- - Use new experimental LC-trie as FIB lookup algorithm. - This improves lookup performance if you have a large - number of routes. - - LC-trie is a longest matching prefix lookup algorithm which - performs better than FIB_HASH for large routing tables. - But, it consumes more memory and is more complex. - - LC-trie is described in: - - IP-address lookup using LC-tries. Stefan Nilsson and Gunnar Karlsson - IEEE Journal on Selected Areas in Communications, 17(6):1083-1092, June 1999 - An experimental study of compression methods for dynamic tries - Stefan Nilsson and Matti Tikkanen. Algorithmica, 33(1):19-33, 2002. - http://www.nada.kth.se/~snilsson/public/papers/dyntrie2/ - -endchoice - -config IP_FIB_HASH - def_bool ASK_IP_FIB_HASH || !IP_ADVANCED_ROUTER + If unsure, say N here. config IP_FIB_TRIE_STATS bool "FIB TRIE statistics" - depends on IP_FIB_TRIE + depends on IP_ADVANCED_ROUTER ---help--- Keep track of statistics on structure of FIB TRIE table. Useful for testing and measuring TRIE performance. @@ -134,6 +101,9 @@ config IP_ROUTE_VERBOSE handled by the klogd daemon which is responsible for kernel messages ("man klogd"). +config IP_ROUTE_CLASSID + bool + config IP_PNP bool "IP: kernel level autoconfiguration" help @@ -160,7 +130,7 @@ config IP_PNP_DHCP If unsure, say Y. Note that if you want to use DHCP, a DHCP server must be operating on your network. Read - <file:Documentation/filesystems/nfsroot.txt> for details. + <file:Documentation/filesystems/nfs/nfsroot.txt> for details. config IP_PNP_BOOTP bool "IP: BOOTP support" @@ -175,7 +145,7 @@ config IP_PNP_BOOTP does BOOTP itself, providing all necessary information on the kernel command line, you can say N here. If unsure, say Y. Note that if you want to use BOOTP, a BOOTP server must be operating on your network. - Read <file:Documentation/filesystems/nfsroot.txt> for details. + Read <file:Documentation/filesystems/nfs/nfsroot.txt> for details. config IP_PNP_RARP bool "IP: RARP support" @@ -188,13 +158,12 @@ config IP_PNP_RARP older protocol which is being obsoleted by BOOTP and DHCP), say Y here. Note that if you want to use RARP, a RARP server must be operating on your network. Read - <file:Documentation/filesystems/nfsroot.txt> for details. + <file:Documentation/filesystems/nfs/nfsroot.txt> for details. -# not yet ready.. -# bool ' IP: ARP support' CONFIG_IP_PNP_ARP config NET_IPIP tristate "IP: tunneling" select INET_TUNNEL + select NET_IP_TUNNEL ---help--- Tunneling means encapsulating data of one protocol type within another protocol and sending it over a channel that understands the @@ -209,8 +178,20 @@ config NET_IPIP be inserted in and removed from the running kernel whenever you want). Most people won't need this and can say N. +config NET_IPGRE_DEMUX + tristate "IP: GRE demultiplexer" + help + This is helper module to demultiplex GRE packets on GRE version field criteria. + Required by ip_gre and pptp modules. + +config NET_IP_TUNNEL + tristate + default n + config NET_IPGRE tristate "IP: GRE tunnels over IP" + depends on (IPV6 || IPV6=n) && NET_IPGRE_DEMUX + select NET_IP_TUNNEL help Tunneling means encapsulating data of one protocol type within another protocol and sending it over a channel that understands the @@ -239,10 +220,22 @@ config IP_MROUTE packets that have several destination addresses. It is needed on the MBONE, a high bandwidth network on top of the Internet which carries audio and video broadcasts. In order to do that, you would most - likely run the program mrouted. Information about the multicast - capabilities of the various network cards is contained in - <file:Documentation/networking/multicast.txt>. If you haven't heard - about it, you don't need it. + likely run the program mrouted. If you haven't heard about it, you + don't need it. + +config IP_MROUTE_MULTIPLE_TABLES + bool "IP: multicast policy routing" + depends on IP_MROUTE && IP_ADVANCED_ROUTER + select FIB_RULES + help + Normally, a multicast router runs a userspace daemon and decides + what to do with a multicast packet based on the source and + destination addresses. If you say Y here, the multicast router + will also be able to take interfaces and packet marks into + account and run multiple instances of userspace daemons + simultaneously, each one handling a single table. + + If unsure, say N. config IP_PIMSM_V1 bool "IP: PIM-SM version 1 support" @@ -266,33 +259,8 @@ config IP_PIMSM_V2 gated-5). This routing protocol is not used widely, so say N unless you want to play with it. -config ARPD - bool "IP: ARP daemon support (EXPERIMENTAL)" - depends on EXPERIMENTAL - ---help--- - Normally, the kernel maintains an internal cache which maps IP - addresses to hardware addresses on the local network, so that - Ethernet/Token Ring/ etc. frames are sent to the proper address on - the physical networking layer. For small networks having a few - hundred directly connected hosts or less, keeping this address - resolution (ARP) cache inside the kernel works well. However, - maintaining an internal ARP cache does not work well for very large - switched networks, and will use a lot of kernel memory if TCP/IP - connections are made to many machines on the network. - - If you say Y here, the kernel's internal ARP cache will never grow - to more than 256 entries (the oldest entries are expired in a LIFO - manner) and communication will be attempted with the user space ARP - daemon arpd. Arpd then answers the address resolution request either - from its own cache or by asking the net. - - This code is experimental and also obsolete. If you want to use it, - you need to find a version of the daemon arpd on the net somewhere, - and you should also say Y to "Kernel/User network link driver", - below. If unsure, say N. - config SYN_COOKIES - bool "IP: TCP syncookie support (disabled per default)" + bool "IP: TCP syncookie support" ---help--- Normal TCP/IP networking is open to an attack known as "SYN flooding". This denial-of-service attack prevents legitimate remote @@ -317,19 +285,31 @@ config SYN_COOKIES server is really overloaded. If this happens frequently better turn them off. - If you say Y here, note that SYN cookies aren't enabled by default; - you can enable them by saying Y to "/proc file system support" and + If you say Y here, you can disable SYN cookies at run time by + saying Y to "/proc file system support" and "Sysctl support" below and executing the command - echo 1 >/proc/sys/net/ipv4/tcp_syncookies + echo 0 > /proc/sys/net/ipv4/tcp_syncookies - at boot time after the /proc file system has been mounted. + after the /proc file system has been mounted. If unsure, say N. +config NET_IPVTI + tristate "Virtual (secure) IP: tunneling" + select INET_TUNNEL + select NET_IP_TUNNEL + depends on INET_XFRM_MODE_TUNNEL + ---help--- + Tunneling means encapsulating data of one protocol type within + another protocol and sending it over a channel that understands the + encapsulating protocol. This can be used with xfrm mode tunnel to give + the notion of a secure tunnel for IPSEC and then use routing protocol + on top. + config INET_AH tristate "IP: AH transformation" - select XFRM + select XFRM_ALGO select CRYPTO select CRYPTO_HMAC select CRYPTO_MD5 @@ -341,7 +321,7 @@ config INET_AH config INET_ESP tristate "IP: ESP transformation" - select XFRM + select XFRM_ALGO select CRYPTO select CRYPTO_AUTHENC select CRYPTO_HMAC @@ -361,7 +341,7 @@ config INET_IPCOMP ---help--- Support for IP Payload Compression Protocol (IPComp) (RFC3173), typically needed for IPsec. - + If unsure, say Y. config INET_XFRM_TUNNEL @@ -402,7 +382,7 @@ config INET_XFRM_MODE_BEET config INET_LRO tristate "Large Receive Offload (ipv4/tcp)" - + default y ---help--- Support for Large Receive Offload (ipv4/tcp). @@ -414,14 +394,24 @@ config INET_DIAG ---help--- Support for INET (TCP, DCCP, etc) socket monitoring interface used by native Linux tools such as ss. ss is included in iproute2, currently - downloadable at <http://linux-net.osdl.org/index.php/Iproute2>. + downloadable at: + http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2 + If unsure, say Y. config INET_TCP_DIAG depends on INET_DIAG def_tristate INET_DIAG +config INET_UDP_DIAG + tristate "UDP: socket monitoring interface" + depends on INET_DIAG && (IPV6 || IPV6=n) + default n + ---help--- + Support for UDP socket monitoring interface used by the ss tool. + If unsure, say Y. + menuconfig TCP_CONG_ADVANCED bool "TCP: advanced congestion control" ---help--- @@ -484,7 +474,6 @@ config TCP_CONG_HTCP config TCP_CONG_HSTCP tristate "High Speed TCP" - depends on EXPERIMENTAL default n ---help--- Sally Floyd's High Speed TCP (RFC 3649) congestion control. @@ -495,7 +484,6 @@ config TCP_CONG_HSTCP config TCP_CONG_HYBLA tristate "TCP-Hybla congestion control algorithm" - depends on EXPERIMENTAL default n ---help--- TCP-Hybla is a sender-side only change that eliminates penalization of @@ -505,7 +493,6 @@ config TCP_CONG_HYBLA config TCP_CONG_VEGAS tristate "TCP Vegas" - depends on EXPERIMENTAL default n ---help--- TCP Vegas is a sender-side only change to TCP that anticipates @@ -516,7 +503,6 @@ config TCP_CONG_VEGAS config TCP_CONG_SCALABLE tristate "Scalable TCP" - depends on EXPERIMENTAL default n ---help--- Scalable TCP is a sender-side only change to TCP which uses a @@ -526,7 +512,6 @@ config TCP_CONG_SCALABLE config TCP_CONG_LP tristate "TCP Low Priority" - depends on EXPERIMENTAL default n ---help--- TCP Low Priority (TCP-LP), a distributed algorithm whose goal is @@ -536,7 +521,6 @@ config TCP_CONG_LP config TCP_CONG_VENO tristate "TCP Veno" - depends on EXPERIMENTAL default n ---help--- TCP Veno is a sender-side only enhancement of TCP to obtain better @@ -544,11 +528,10 @@ config TCP_CONG_VENO distinguishing to circumvent the difficult judgment of the packet loss type. TCP Veno cuts down less congestion window in response to random loss packets. - See http://www.ntu.edu.sg/home5/ZHOU0022/papers/CPFu03a.pdf + See <http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1177186> config TCP_CONG_YEAH tristate "YeAH TCP" - depends on EXPERIMENTAL select TCP_CONG_VEGAS default n ---help--- @@ -563,7 +546,6 @@ config TCP_CONG_YEAH config TCP_CONG_ILLINOIS tristate "TCP Illinois" - depends on EXPERIMENTAL default n ---help--- TCP-Illinois is a sender-side modification of TCP Reno for @@ -590,9 +572,15 @@ choice config DEFAULT_HTCP bool "Htcp" if TCP_CONG_HTCP=y + config DEFAULT_HYBLA + bool "Hybla" if TCP_CONG_HYBLA=y + config DEFAULT_VEGAS bool "Vegas" if TCP_CONG_VEGAS=y + config DEFAULT_VENO + bool "Veno" if TCP_CONG_VENO=y + config DEFAULT_WESTWOOD bool "Westwood" if TCP_CONG_WESTWOOD=y @@ -613,14 +601,15 @@ config DEFAULT_TCP_CONG default "bic" if DEFAULT_BIC default "cubic" if DEFAULT_CUBIC default "htcp" if DEFAULT_HTCP + default "hybla" if DEFAULT_HYBLA default "vegas" if DEFAULT_VEGAS default "westwood" if DEFAULT_WESTWOOD + default "veno" if DEFAULT_VENO default "reno" if DEFAULT_RENO default "cubic" config TCP_MD5SIG - bool "TCP: MD5 Signature Option support (RFC2385) (EXPERIMENTAL)" - depends on EXPERIMENTAL + bool "TCP: MD5 Signature Option support (RFC2385)" select CRYPTO select CRYPTO_MD5 ---help--- @@ -629,4 +618,3 @@ config TCP_MD5SIG on the Internet. If unsure, say N. - |