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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# Network configuration
3#
4
Robert P. J. Day031cf192008-07-30 03:14:01 -07005menuconfig NET
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 bool "Networking support"
Geert Uytterhoevene9cc8bd2009-03-04 14:53:30 +08007 select NLATTR
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 ---help---
9 Unless you really know what you are doing, you should say Y here.
10 The reason is that some programs need kernel networking support even
11 when running on a stand-alone machine that isn't connected to any
Sam Ravnborgd5950b42005-07-11 21:03:49 -070012 other computer.
13
14 If you are upgrading from an older kernel, you
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 should consider updating your networking tools too because changes
16 in the kernel and the tools often go hand in hand. The tools are
17 contained in the package net-tools, the location and version number
18 of which are given in <file:Documentation/Changes>.
19
20 For a general introduction to Linux networking, it is highly
21 recommended to read the NET-HOWTO, available from
22 <http://www.tldp.org/docs.html#howto>.
23
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -070024if NET
25
Johannes Berg1dacc762009-07-01 11:26:02 +000026config WANT_COMPAT_NETLINK_MESSAGES
27 bool
28 help
29 This option can be selected by other options that need compat
30 netlink messages.
31
32config COMPAT_NETLINK_MESSAGES
33 def_bool y
34 depends on COMPAT
David S. Miller40b53d82010-07-26 13:13:49 -070035 depends on WEXT_CORE || WANT_COMPAT_NETLINK_MESSAGES
Johannes Berg1dacc762009-07-01 11:26:02 +000036 help
37 This option makes it possible to send different netlink messages
38 to tasks depending on whether the task is a compat task or not. To
39 achieve this, you need to set skb_shinfo(skb)->frag_list to the
40 compat skb before sending the skb, the netlink code will sort out
41 which message to actually pass to the task.
42
43 Newly written code should NEVER need this option but do
44 compat-independent messages instead!
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046menu "Networking options"
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -070048source "net/packet/Kconfig"
49source "net/unix/Kconfig"
50source "net/xfrm/Kconfig"
Martin Schwidefsky2356f4c2007-02-08 13:37:42 -080051source "net/iucv/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
53config INET
54 bool "TCP/IP networking"
55 ---help---
56 These are the protocols used on the Internet and on most local
57 Ethernets. It is highly recommended to say Y here (this will enlarge
YOSHIFUJI Hideakicf80efc2008-02-12 17:35:16 +090058 your kernel by about 400 KB), since some programs (e.g. the X window
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 system) use TCP/IP even if your machine is not connected to any
60 other computer. You will get the so-called loopback device which
61 allows you to ping yourself (great fun, that!).
62
63 For an excellent introduction to Linux networking, please read the
64 Linux Networking HOWTO, available from
65 <http://www.tldp.org/docs.html#howto>.
66
67 If you say Y here and also to "/proc file system support" and
68 "Sysctl support" below, you can change various aspects of the
69 behavior of the TCP/IP code by writing to the (virtual) files in
70 /proc/sys/net/ipv4/*; the options are explained in the file
71 <file:Documentation/networking/ip-sysctl.txt>.
72
73 Short answer: say Y.
74
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -070075if INET
Linus Torvalds1da177e2005-04-16 15:20:36 -070076source "net/ipv4/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -070077source "net/ipv6/Kconfig"
Paul Moore38c94372006-11-05 16:44:06 -080078source "net/netlabel/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -070080endif # if INET
81
James Morris984bc162006-06-09 00:29:17 -070082config NETWORK_SECMARK
83 bool "Security Marking"
84 help
85 This enables security marking of network packets, similar
86 to nfmark, but designated for security purposes.
87 If you are unsure how to answer this question, answer N.
88
Richard Cochranc1f19b52010-07-17 08:49:36 +000089config NETWORK_PHY_TIMESTAMPING
90 bool "Timestamping in PHY devices"
91 depends on EXPERIMENTAL
92 help
93 This allows timestamping of network packets by PHYs with
94 hardware timestamping capabilities. This option adds some
95 overhead in the transmit and receive paths.
96
97 If you are unsure how to answer this question, answer N.
98
Linus Torvalds1da177e2005-04-16 15:20:36 -070099menuconfig NETFILTER
Pablo Neira Ayusoef91fd52006-11-29 02:35:43 +0100100 bool "Network packet filtering framework (Netfilter)"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 ---help---
102 Netfilter is a framework for filtering and mangling network packets
103 that pass through your Linux box.
104
105 The most common use of packet filtering is to run your Linux box as
106 a firewall protecting a local network from the Internet. The type of
107 firewall provided by this kernel support is called a "packet
108 filter", which means that it can reject individual network packets
109 based on type, source, destination etc. The other kind of firewall,
110 a "proxy-based" one, is more secure but more intrusive and more
111 bothersome to set up; it inspects the network traffic much more
112 closely, modifies it and has knowledge about the higher level
113 protocols, which a packet filter lacks. Moreover, proxy-based
114 firewalls often require changes to the programs running on the local
115 clients. Proxy-based firewalls don't need support by the kernel, but
116 they are often combined with a packet filter, which only works if
117 you say Y here.
118
119 You should also say Y here if you intend to use your Linux box as
120 the gateway to the Internet for a local network of machines without
121 globally valid IP addresses. This is called "masquerading": if one
122 of the computers on your local network wants to send something to
123 the outside, your box can "masquerade" as that computer, i.e. it
124 forwards the traffic to the intended outside destination, but
125 modifies the packets to make it look like they came from the
126 firewall box itself. It works both ways: if the outside host
127 replies, the Linux box will silently forward the traffic to the
128 correct local computer. This way, the computers on your local net
129 are completely invisible to the outside world, even though they can
130 reach the outside and can receive replies. It is even possible to
131 run globally visible servers from within a masqueraded local network
132 using a mechanism called portforwarding. Masquerading is also often
133 called NAT (Network Address Translation).
134
135 Another use of Netfilter is in transparent proxying: if a machine on
136 the local network tries to connect to an outside host, your Linux
137 box can transparently forward the traffic to a local server,
138 typically a caching proxy server.
139
140 Yet another use of Netfilter is building a bridging firewall. Using
141 a bridge with Network packet filtering enabled makes iptables "see"
142 the bridged traffic. For filtering on the lower network and Ethernet
143 protocols over the bridge, use ebtables (under bridge netfilter
144 configuration).
145
146 Various modules exist for netfilter which replace the previous
147 masquerading (ipmasqadm), packet filtering (ipchains), transparent
148 proxying, and portforwarding mechanisms. Please see
149 <file:Documentation/Changes> under "iptables" for the location of
150 these packages.
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152if NETFILTER
153
154config NETFILTER_DEBUG
155 bool "Network packet filtering debugging"
156 depends on NETFILTER
157 help
158 You can say Y here if you want to get additional messages useful in
159 debugging the netfilter code.
160
Patrick McHardy33b8e772007-12-17 22:47:05 -0800161config NETFILTER_ADVANCED
162 bool "Advanced netfilter configuration"
163 depends on NETFILTER
164 default y
165 help
166 If you say Y here you can select between all the netfilter modules.
Matt LaPlante692105b2009-01-26 11:12:25 +0100167 If you say N the more unusual ones will not be shown and the
Patrick McHardy33b8e772007-12-17 22:47:05 -0800168 basic ones needed by most people will default to 'M'.
169
170 If unsure, say Y.
171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172config BRIDGE_NETFILTER
173 bool "Bridged IP/ARP packets filtering"
174 depends on BRIDGE && NETFILTER && INET
Patrick McHardy33b8e772007-12-17 22:47:05 -0800175 depends on NETFILTER_ADVANCED
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 default y
177 ---help---
178 Enabling this option will let arptables resp. iptables see bridged
179 ARP resp. IP traffic. If you want a bridging firewall, you probably
180 want this option enabled.
181 Enabling or disabling this option doesn't enable or disable
182 ebtables.
183
184 If unsure, say N.
185
Harald Welte9eb0eec2005-09-17 00:41:21 -0700186source "net/netfilter/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187source "net/ipv4/netfilter/Kconfig"
188source "net/ipv6/netfilter/Kconfig"
189source "net/decnet/netfilter/Kconfig"
190source "net/bridge/netfilter/Kconfig"
191
192endif
193
Arnaldo Carvalho de Melo7c657872005-08-09 20:14:34 -0700194source "net/dccp/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195source "net/sctp/Kconfig"
Andy Groverfe17f842009-02-24 15:30:39 +0000196source "net/rds/Kconfig"
Per Liden1e63e682006-01-16 16:39:13 +0100197source "net/tipc/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700198source "net/atm/Kconfig"
James Chapmanfd558d12010-04-02 06:18:33 +0000199source "net/l2tp/Kconfig"
Patrick McHardya19800d2008-07-05 21:25:39 -0700200source "net/802/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700201source "net/bridge/Kconfig"
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000202source "net/dsa/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700203source "net/8021q/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204source "net/decnet/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205source "net/llc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206source "net/ipx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207source "drivers/net/appletalk/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700208source "net/x25/Kconfig"
209source "net/lapb/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700210source "net/wanrouter/Kconfig"
remi.denis-courmont@nokia50751382009-01-23 03:00:25 +0000211source "net/phonet/Kconfig"
Sergey Lapin9ec76712009-06-08 12:18:48 +0000212source "net/ieee802154/Kconfig"
alex.bluesman.smirnov@gmail.com1010f542012-05-15 20:50:20 +0000213source "net/mac802154/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214source "net/sched/Kconfig"
Alexander Duyck2f90b862008-11-20 20:52:10 -0800215source "net/dcb/Kconfig"
Wang Lei1a4240f2010-08-04 15:16:33 +0100216source "net/dns_resolver/Kconfig"
Sven Eckelmannc6c8fea2010-12-13 11:19:28 +0000217source "net/batman-adv/Kconfig"
Jesse Grossccb13522011-10-25 19:26:31 -0700218source "net/openvswitch/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
Eric Dumazetdf334542010-03-24 19:13:54 +0000220config RPS
221 boolean
David S. Miller6dcbc122010-09-14 21:41:20 -0700222 depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
Eric Dumazetdf334542010-03-24 19:13:54 +0000223 default y
224
Ben Hutchingsc4454772011-01-19 11:03:53 +0000225config RFS_ACCEL
226 boolean
227 depends on RPS && GENERIC_HARDIRQS
228 select CPU_RMAP
229 default y
230
Tom Herbertbf264142010-11-26 08:36:09 +0000231config XPS
232 boolean
233 depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
234 default y
235
Neil Horman5bc14212011-11-22 05:10:51 +0000236config NETPRIO_CGROUP
237 tristate "Network priority cgroup"
238 depends on CGROUPS
239 ---help---
240 Cgroup subsystem for use in assigning processes to network priorities on
241 a per-interface basis
242
Tom Herbert114cf582011-11-28 16:33:09 +0000243config BQL
244 boolean
245 depends on SYSFS
246 select DQL
247 default y
248
Eric Dumazet0a148422011-04-20 09:27:32 +0000249config BPF_JIT
250 bool "enable BPF Just In Time compiler"
251 depends on HAVE_BPF_JIT
Eric Dumazetb6202f92011-04-29 10:20:53 -0700252 depends on MODULES
Eric Dumazet0a148422011-04-20 09:27:32 +0000253 ---help---
254 Berkeley Packet Filter filtering capabilities are normally handled
255 by an interpreter. This option allows kernel to generate a native
256 code when filter is loaded in memory. This should speedup
257 packet sniffing (libpcap/tcpdump). Note : Admin should enable
258 this feature changing /proc/sys/net/core/bpf_jit_enable
259
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260menu "Network testing"
261
262config NET_PKTGEN
263 tristate "Packet Generator (USE WITH CAUTION)"
264 depends on PROC_FS
265 ---help---
266 This module will inject preconfigured packets, at a configurable
267 rate, out of a given interface. It is used for network interface
268 stress testing and performance analysis. If you don't understand
269 what was just said, you don't need it: say N.
270
271 Documentation on how to use the packet generator can be found
272 at <file:Documentation/networking/pktgen.txt>.
273
274 To compile this code as a module, choose M here: the
275 module will be called pktgen.
276
Stephen Hemmingera42e9d62006-06-05 17:30:32 -0700277config NET_TCPPROBE
278 tristate "TCP connection probing"
279 depends on INET && EXPERIMENTAL && PROC_FS && KPROBES
280 ---help---
281 This module allows for capturing the changes to TCP connection
Dave Jones9dadaa192006-06-08 23:42:09 -0700282 state in response to incoming packets. It is used for debugging
Stephen Hemmingera42e9d62006-06-05 17:30:32 -0700283 TCP congestion avoidance modules. If you don't understand
284 what was just said, you don't need it: say N.
285
Grant Grundler82fe7c92006-09-25 23:47:14 -0700286 Documentation on how to use TCP connection probing can be found
Michael Wittenc996d8b2010-11-15 19:55:34 +0000287 at:
288
289 http://www.linuxfoundation.org/collaborate/workgroups/networking/tcpprobe
Stephen Hemmingera42e9d62006-06-05 17:30:32 -0700290
291 To compile this code as a module, choose M here: the
292 module will be called tcp_probe.
293
Neil Horman273ae442009-03-11 09:53:16 +0000294config NET_DROP_MONITOR
Neil Hormancad456d2012-05-17 10:04:00 +0000295 tristate "Network packet drop alerting service"
Neil Horman273ae442009-03-11 09:53:16 +0000296 depends on INET && EXPERIMENTAL && TRACEPOINTS
297 ---help---
298 This feature provides an alerting service to userspace in the
299 event that packets are discarded in the network stack. Alerts
300 are broadcast via netlink socket to any listening user space
301 process. If you don't need network drop alerts, or if you are ok
302 just checking the various proc files and other utilities for
303 drop statistics, say N here.
304
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305endmenu
306
307endmenu
308
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309source "net/ax25/Kconfig"
Oliver Hartkopp0d665482007-11-16 15:52:17 -0800310source "net/can/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311source "net/irda/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312source "net/bluetooth/Kconfig"
David Howells17926a72007-04-26 15:48:28 -0700313source "net/rxrpc/Kconfig"
Adrian Bunkd86b5e02006-01-21 00:46:55 +0100314
Thomas Graf14c0b972006-08-04 03:38:38 -0700315config FIB_RULES
316 bool
317
Robert P. J. Day54420602008-07-24 12:20:09 -0400318menuconfig WIRELESS
319 bool "Wireless"
Martin Schwidefskyf54bfc02007-05-10 15:46:01 +0200320 depends on !S390
Robert P. J. Day54420602008-07-24 12:20:09 -0400321 default y
322
323if WIRELESS
Johannes Berg2a5e1c02007-04-23 12:19:12 -0700324
325source "net/wireless/Kconfig"
Jiri Bencf0706e82007-05-05 11:45:53 -0700326source "net/mac80211/Kconfig"
Johannes Berg2a5e1c02007-04-23 12:19:12 -0700327
Robert P. J. Day54420602008-07-24 12:20:09 -0400328endif # WIRELESS
Johannes Berg2a5e1c02007-04-23 12:19:12 -0700329
Inaky Perez-Gonzalezb0c83ae2008-12-23 16:18:24 -0800330source "net/wimax/Kconfig"
331
Ivo van Doorncf4328c2007-05-07 00:34:20 -0700332source "net/rfkill/Kconfig"
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500333source "net/9p/Kconfig"
Sjur Braendeland3908c692010-03-30 13:56:28 +0000334source "net/caif/Kconfig"
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700335source "net/ceph/Kconfig"
Lauro Ramos Venancio3e256b82011-07-01 19:31:33 -0300336source "net/nfc/Kconfig"
Sjur Braendeland3908c692010-03-30 13:56:28 +0000337
Ivo van Doorncf4328c2007-05-07 00:34:20 -0700338
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700339endif # if NET
Sam Ravnborge47b65b2012-05-21 20:45:37 +0200340
341# Used by archs to tell that they support BPF_JIT
342config HAVE_BPF_JIT
343 bool