net/Kconfig - kernel/msm-4.9 - Gitiles

 #
 # Network configuration
 #

 menuconfig NET
 	bool "Networking support"
 	---help---
 	  Unless you really know what you are doing, you should say Y here.
 	  The reason is that some programs need kernel networking support even
 	  when running on a stand-alone machine that isn't connected to any
 	  other computer.

 	  If you are upgrading from an older kernel, you
 	  should consider updating your networking tools too because changes
 	  in the kernel and the tools often go hand in hand. The tools are
 	  contained in the package net-tools, the location and version number
 	  of which are given in <file:Documentation/Changes>.

 	  For a general introduction to Linux networking, it is highly
 	  recommended to read the NET-HOWTO, available from
 	  <http://www.tldp.org/docs.html#howto>.

 if NET

 menu "Networking options"

 config COMPAT_NET_DEV_OPS
        def_bool y

 source "net/packet/Kconfig"
 source "net/unix/Kconfig"
 source "net/xfrm/Kconfig"
 source "net/iucv/Kconfig"

 config INET
 	bool "TCP/IP networking"
 	---help---
 	  These are the protocols used on the Internet and on most local
 	  Ethernets. It is highly recommended to say Y here (this will enlarge
 	  your kernel by about 400 KB), since some programs (e.g. the X window
 	  system) use TCP/IP even if your machine is not connected to any
 	  other computer. You will get the so-called loopback device which
 	  allows you to ping yourself (great fun, that!).

 	  For an excellent introduction to Linux networking, please read the
 	  Linux Networking HOWTO, available from
 	  <http://www.tldp.org/docs.html#howto>.

 	  If you say Y here and also to "/proc file system support" and
 	  "Sysctl support" below, you can change various aspects of the
 	  behavior of the TCP/IP code by writing to the (virtual) files in
 	  /proc/sys/net/ipv4/*; the options are explained in the file
 	  <file:Documentation/networking/ip-sysctl.txt>.

 	  Short answer: say Y.

 if INET
 source "net/ipv4/Kconfig"
 source "net/ipv6/Kconfig"
 source "net/netlabel/Kconfig"

 endif # if INET

 config NETWORK_SECMARK
 	bool "Security Marking"
 	help
 	  This enables security marking of network packets, similar
 	  to nfmark, but designated for security purposes.
 	  If you are unsure how to answer this question, answer N.

 menuconfig NETFILTER
 	bool "Network packet filtering framework (Netfilter)"
 	---help---
 	  Netfilter is a framework for filtering and mangling network packets
 	  that pass through your Linux box.

 	  The most common use of packet filtering is to run your Linux box as
 	  a firewall protecting a local network from the Internet. The type of
 	  firewall provided by this kernel support is called a "packet
 	  filter", which means that it can reject individual network packets
 	  based on type, source, destination etc. The other kind of firewall,
 	  a "proxy-based" one, is more secure but more intrusive and more
 	  bothersome to set up; it inspects the network traffic much more
 	  closely, modifies it and has knowledge about the higher level
 	  protocols, which a packet filter lacks. Moreover, proxy-based
 	  firewalls often require changes to the programs running on the local
 	  clients. Proxy-based firewalls don't need support by the kernel, but
 	  they are often combined with a packet filter, which only works if
 	  you say Y here.

 	  You should also say Y here if you intend to use your Linux box as
 	  the gateway to the Internet for a local network of machines without
 	  globally valid IP addresses. This is called "masquerading": if one
 	  of the computers on your local network wants to send something to
 	  the outside, your box can "masquerade" as that computer, i.e. it
 	  forwards the traffic to the intended outside destination, but
 	  modifies the packets to make it look like they came from the
 	  firewall box itself. It works both ways: if the outside host
 	  replies, the Linux box will silently forward the traffic to the
 	  correct local computer. This way, the computers on your local net
 	  are completely invisible to the outside world, even though they can
 	  reach the outside and can receive replies. It is even possible to
 	  run globally visible servers from within a masqueraded local network
 	  using a mechanism called portforwarding. Masquerading is also often
 	  called NAT (Network Address Translation).

 	  Another use of Netfilter is in transparent proxying: if a machine on
 	  the local network tries to connect to an outside host, your Linux
 	  box can transparently forward the traffic to a local server,
 	  typically a caching proxy server.

 	  Yet another use of Netfilter is building a bridging firewall. Using
 	  a bridge with Network packet filtering enabled makes iptables "see"
 	  the bridged traffic. For filtering on the lower network and Ethernet
 	  protocols over the bridge, use ebtables (under bridge netfilter
 	  configuration).

 	  Various modules exist for netfilter which replace the previous
 	  masquerading (ipmasqadm), packet filtering (ipchains), transparent
 	  proxying, and portforwarding mechanisms. Please see
 	  <file:Documentation/Changes> under "iptables" for the location of
 	  these packages.

 	  Make sure to say N to "Fast switching" below if you intend to say Y
 	  here, as Fast switching currently bypasses netfilter.

 	  Chances are that you should say Y here if you compile a kernel which
 	  will run as a router and N for regular hosts. If unsure, say N.

 if NETFILTER

 config NETFILTER_DEBUG
 	bool "Network packet filtering debugging"
 	depends on NETFILTER
 	help
 	  You can say Y here if you want to get additional messages useful in
 	  debugging the netfilter code.

 config NETFILTER_ADVANCED
 	bool "Advanced netfilter configuration"
 	depends on NETFILTER
 	default y
 	help
 	  If you say Y here you can select between all the netfilter modules.
 	  If you say N the more ununsual ones will not be shown and the
 	  basic ones needed by most people will default to 'M'.

 	  If unsure, say Y.

 config BRIDGE_NETFILTER
 	bool "Bridged IP/ARP packets filtering"
 	depends on BRIDGE && NETFILTER && INET
 	depends on NETFILTER_ADVANCED
 	default y
 	---help---
 	  Enabling this option will let arptables resp. iptables see bridged
 	  ARP resp. IP traffic. If you want a bridging firewall, you probably
 	  want this option enabled.
 	  Enabling or disabling this option doesn't enable or disable
 	  ebtables.

 	  If unsure, say N.

 source "net/netfilter/Kconfig"
 source "net/ipv4/netfilter/Kconfig"
 source "net/ipv6/netfilter/Kconfig"
 source "net/decnet/netfilter/Kconfig"
 source "net/bridge/netfilter/Kconfig"

 endif

 source "net/dccp/Kconfig"
 source "net/sctp/Kconfig"
 source "net/rds/Kconfig"
 source "net/tipc/Kconfig"
 source "net/atm/Kconfig"
 source "net/802/Kconfig"
 source "net/bridge/Kconfig"
 source "net/dsa/Kconfig"
 source "net/8021q/Kconfig"
 source "net/decnet/Kconfig"
 source "net/llc/Kconfig"
 source "net/ipx/Kconfig"
 source "drivers/net/appletalk/Kconfig"
 source "net/x25/Kconfig"
 source "net/lapb/Kconfig"
 source "net/econet/Kconfig"
 source "net/wanrouter/Kconfig"
 source "net/phonet/Kconfig"
 source "net/sched/Kconfig"
 source "net/dcb/Kconfig"

 menu "Network testing"

 config NET_PKTGEN
 	tristate "Packet Generator (USE WITH CAUTION)"
 	depends on PROC_FS
 	---help---
 	  This module will inject preconfigured packets, at a configurable
 	  rate, out of a given interface.  It is used for network interface
 	  stress testing and performance analysis.  If you don't understand
 	  what was just said, you don't need it: say N.

 	  Documentation on how to use the packet generator can be found
 	  at <file:Documentation/networking/pktgen.txt>.

 	  To compile this code as a module, choose M here: the
 	  module will be called pktgen.

 config NET_TCPPROBE
 	tristate "TCP connection probing"
 	depends on INET && EXPERIMENTAL && PROC_FS && KPROBES
 	---help---
 	This module allows for capturing the changes to TCP connection
 	state in response to incoming packets. It is used for debugging
 	TCP congestion avoidance modules. If you don't understand
 	what was just said, you don't need it: say N.

 	Documentation on how to use TCP connection probing can be found
 	at http://linux-net.osdl.org/index.php/TcpProbe

 	To compile this code as a module, choose M here: the
 	module will be called tcp_probe.

 config NET_DROP_MONITOR
 	boolean "Network packet drop alerting service"
 	depends on INET && EXPERIMENTAL && TRACEPOINTS
 	---help---
 	This feature provides an alerting service to userspace in the
 	event that packets are discarded in the network stack.  Alerts
 	are broadcast via netlink socket to any listening user space
 	process.  If you don't need network drop alerts, or if you are ok
 	just checking the various proc files and other utilities for
 	drop statistics, say N here.

 endmenu

 endmenu

 source "net/ax25/Kconfig"
 source "net/can/Kconfig"
 source "net/irda/Kconfig"
 source "net/bluetooth/Kconfig"
 source "net/rxrpc/Kconfig"

 config FIB_RULES
 	bool

 menuconfig WIRELESS
 	bool "Wireless"
 	depends on !S390
 	default y

 if WIRELESS

 source "net/wireless/Kconfig"
 source "net/mac80211/Kconfig"

 endif # WIRELESS

 source "net/wimax/Kconfig"

 source "net/rfkill/Kconfig"
 source "net/9p/Kconfig"

 endif   # if NET
	#
	# Network configuration
	#

	menuconfig NET
	bool "Networking support"
	---help---
	Unless you really know what you are doing, you should say Y here.
	The reason is that some programs need kernel networking support even
	when running on a stand-alone machine that isn't connected to any
	other computer.

	If you are upgrading from an older kernel, you
	should consider updating your networking tools too because changes
	in the kernel and the tools often go hand in hand. The tools are
	contained in the package net-tools, the location and version number
	of which are given in <file:Documentation/Changes>.

	For a general introduction to Linux networking, it is highly
	recommended to read the NET-HOWTO, available from
	<http://www.tldp.org/docs.html#howto>.

	if NET

	menu "Networking options"

	config COMPAT_NET_DEV_OPS
	def_bool y

	source "net/packet/Kconfig"
	source "net/unix/Kconfig"
	source "net/xfrm/Kconfig"
	source "net/iucv/Kconfig"

	config INET
	bool "TCP/IP networking"
	---help---
	These are the protocols used on the Internet and on most local
	Ethernets. It is highly recommended to say Y here (this will enlarge
	your kernel by about 400 KB), since some programs (e.g. the X window
	system) use TCP/IP even if your machine is not connected to any
	other computer. You will get the so-called loopback device which
	allows you to ping yourself (great fun, that!).

	For an excellent introduction to Linux networking, please read the
	Linux Networking HOWTO, available from
	<http://www.tldp.org/docs.html#howto>.

	If you say Y here and also to "/proc file system support" and
	"Sysctl support" below, you can change various aspects of the
	behavior of the TCP/IP code by writing to the (virtual) files in
	/proc/sys/net/ipv4/*; the options are explained in the file
	<file:Documentation/networking/ip-sysctl.txt>.

	Short answer: say Y.

	if INET
	source "net/ipv4/Kconfig"
	source "net/ipv6/Kconfig"
	source "net/netlabel/Kconfig"

	endif # if INET

	config NETWORK_SECMARK
	bool "Security Marking"
	help
	This enables security marking of network packets, similar
	to nfmark, but designated for security purposes.
	If you are unsure how to answer this question, answer N.

	menuconfig NETFILTER
	bool "Network packet filtering framework (Netfilter)"
	---help---
	Netfilter is a framework for filtering and mangling network packets
	that pass through your Linux box.

	The most common use of packet filtering is to run your Linux box as
	a firewall protecting a local network from the Internet. The type of
	firewall provided by this kernel support is called a "packet
	filter", which means that it can reject individual network packets
	based on type, source, destination etc. The other kind of firewall,
	a "proxy-based" one, is more secure but more intrusive and more
	bothersome to set up; it inspects the network traffic much more
	closely, modifies it and has knowledge about the higher level
	protocols, which a packet filter lacks. Moreover, proxy-based
	firewalls often require changes to the programs running on the local
	clients. Proxy-based firewalls don't need support by the kernel, but
	they are often combined with a packet filter, which only works if
	you say Y here.

	You should also say Y here if you intend to use your Linux box as
	the gateway to the Internet for a local network of machines without
	globally valid IP addresses. This is called "masquerading": if one
	of the computers on your local network wants to send something to
	the outside, your box can "masquerade" as that computer, i.e. it
	forwards the traffic to the intended outside destination, but
	modifies the packets to make it look like they came from the
	firewall box itself. It works both ways: if the outside host
	replies, the Linux box will silently forward the traffic to the
	correct local computer. This way, the computers on your local net
	are completely invisible to the outside world, even though they can
	reach the outside and can receive replies. It is even possible to
	run globally visible servers from within a masqueraded local network
	using a mechanism called portforwarding. Masquerading is also often
	called NAT (Network Address Translation).

	Another use of Netfilter is in transparent proxying: if a machine on
	the local network tries to connect to an outside host, your Linux
	box can transparently forward the traffic to a local server,
	typically a caching proxy server.

	Yet another use of Netfilter is building a bridging firewall. Using
	a bridge with Network packet filtering enabled makes iptables "see"
	the bridged traffic. For filtering on the lower network and Ethernet
	protocols over the bridge, use ebtables (under bridge netfilter
	configuration).

	Various modules exist for netfilter which replace the previous
	masquerading (ipmasqadm), packet filtering (ipchains), transparent
	proxying, and portforwarding mechanisms. Please see
	<file:Documentation/Changes> under "iptables" for the location of
	these packages.

	Make sure to say N to "Fast switching" below if you intend to say Y
	here, as Fast switching currently bypasses netfilter.

	Chances are that you should say Y here if you compile a kernel which
	will run as a router and N for regular hosts. If unsure, say N.

	if NETFILTER

	config NETFILTER_DEBUG
	bool "Network packet filtering debugging"
	depends on NETFILTER
	help
	You can say Y here if you want to get additional messages useful in
	debugging the netfilter code.

	config NETFILTER_ADVANCED
	bool "Advanced netfilter configuration"
	depends on NETFILTER
	default y
	help
	If you say Y here you can select between all the netfilter modules.
	If you say N the more ununsual ones will not be shown and the
	basic ones needed by most people will default to 'M'.

	If unsure, say Y.

	config BRIDGE_NETFILTER
	bool "Bridged IP/ARP packets filtering"
	depends on BRIDGE && NETFILTER && INET
	depends on NETFILTER_ADVANCED
	default y
	---help---
	Enabling this option will let arptables resp. iptables see bridged
	ARP resp. IP traffic. If you want a bridging firewall, you probably
	want this option enabled.
	Enabling or disabling this option doesn't enable or disable
	ebtables.

	If unsure, say N.

	source "net/netfilter/Kconfig"
	source "net/ipv4/netfilter/Kconfig"
	source "net/ipv6/netfilter/Kconfig"
	source "net/decnet/netfilter/Kconfig"
	source "net/bridge/netfilter/Kconfig"

	endif

	source "net/dccp/Kconfig"
	source "net/sctp/Kconfig"
	source "net/rds/Kconfig"
	source "net/tipc/Kconfig"
	source "net/atm/Kconfig"
	source "net/802/Kconfig"
	source "net/bridge/Kconfig"
	source "net/dsa/Kconfig"
	source "net/8021q/Kconfig"
	source "net/decnet/Kconfig"
	source "net/llc/Kconfig"
	source "net/ipx/Kconfig"
	source "drivers/net/appletalk/Kconfig"
	source "net/x25/Kconfig"
	source "net/lapb/Kconfig"
	source "net/econet/Kconfig"
	source "net/wanrouter/Kconfig"
	source "net/phonet/Kconfig"
	source "net/sched/Kconfig"
	source "net/dcb/Kconfig"

	menu "Network testing"

	config NET_PKTGEN
	tristate "Packet Generator (USE WITH CAUTION)"
	depends on PROC_FS
	---help---
	This module will inject preconfigured packets, at a configurable
	rate, out of a given interface. It is used for network interface
	stress testing and performance analysis. If you don't understand
	what was just said, you don't need it: say N.

	Documentation on how to use the packet generator can be found
	at <file:Documentation/networking/pktgen.txt>.

	To compile this code as a module, choose M here: the
	module will be called pktgen.

	config NET_TCPPROBE
	tristate "TCP connection probing"
	depends on INET && EXPERIMENTAL && PROC_FS && KPROBES
	---help---
	This module allows for capturing the changes to TCP connection
	state in response to incoming packets. It is used for debugging
	TCP congestion avoidance modules. If you don't understand
	what was just said, you don't need it: say N.

	Documentation on how to use TCP connection probing can be found
	at http://linux-net.osdl.org/index.php/TcpProbe

	To compile this code as a module, choose M here: the
	module will be called tcp_probe.

	config NET_DROP_MONITOR
	boolean "Network packet drop alerting service"
	depends on INET && EXPERIMENTAL && TRACEPOINTS
	---help---
	This feature provides an alerting service to userspace in the
	event that packets are discarded in the network stack. Alerts
	are broadcast via netlink socket to any listening user space
	process. If you don't need network drop alerts, or if you are ok
	just checking the various proc files and other utilities for
	drop statistics, say N here.

	endmenu

	endmenu

	source "net/ax25/Kconfig"
	source "net/can/Kconfig"
	source "net/irda/Kconfig"
	source "net/bluetooth/Kconfig"
	source "net/rxrpc/Kconfig"

	config FIB_RULES
	bool

	menuconfig WIRELESS
	bool "Wireless"
	depends on !S390
	default y

	if WIRELESS

	source "net/wireless/Kconfig"
	source "net/mac80211/Kconfig"

	endif # WIRELESS

	source "net/wimax/Kconfig"

	source "net/rfkill/Kconfig"
	source "net/9p/Kconfig"

	endif # if NET