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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"
David S. Miller798b2cb2012-09-04 14:20:14 -040055 select CRYPTO
56 select CRYPTO_AES
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 ---help---
58 These are the protocols used on the Internet and on most local
59 Ethernets. It is highly recommended to say Y here (this will enlarge
YOSHIFUJI Hideakicf80efc2008-02-12 17:35:16 +090060 your kernel by about 400 KB), since some programs (e.g. the X window
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 system) use TCP/IP even if your machine is not connected to any
62 other computer. You will get the so-called loopback device which
63 allows you to ping yourself (great fun, that!).
64
65 For an excellent introduction to Linux networking, please read the
66 Linux Networking HOWTO, available from
67 <http://www.tldp.org/docs.html#howto>.
68
69 If you say Y here and also to "/proc file system support" and
70 "Sysctl support" below, you can change various aspects of the
71 behavior of the TCP/IP code by writing to the (virtual) files in
72 /proc/sys/net/ipv4/*; the options are explained in the file
73 <file:Documentation/networking/ip-sysctl.txt>.
74
75 Short answer: say Y.
76
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -070077if INET
Linus Torvalds1da177e2005-04-16 15:20:36 -070078source "net/ipv4/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -070079source "net/ipv6/Kconfig"
Paul Moore38c94372006-11-05 16:44:06 -080080source "net/netlabel/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -070082endif # if INET
83
James Morris984bc162006-06-09 00:29:17 -070084config NETWORK_SECMARK
85 bool "Security Marking"
86 help
87 This enables security marking of network packets, similar
88 to nfmark, but designated for security purposes.
89 If you are unsure how to answer this question, answer N.
90
Richard Cochranc1f19b52010-07-17 08:49:36 +000091config NETWORK_PHY_TIMESTAMPING
92 bool "Timestamping in PHY devices"
Richard Cochranc1f19b52010-07-17 08:49:36 +000093 help
94 This allows timestamping of network packets by PHYs with
95 hardware timestamping capabilities. This option adds some
96 overhead in the transmit and receive paths.
97
98 If you are unsure how to answer this question, answer N.
99
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100menuconfig NETFILTER
Pablo Neira Ayusoef91fd52006-11-29 02:35:43 +0100101 bool "Network packet filtering framework (Netfilter)"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 ---help---
103 Netfilter is a framework for filtering and mangling network packets
104 that pass through your Linux box.
105
106 The most common use of packet filtering is to run your Linux box as
107 a firewall protecting a local network from the Internet. The type of
108 firewall provided by this kernel support is called a "packet
109 filter", which means that it can reject individual network packets
110 based on type, source, destination etc. The other kind of firewall,
111 a "proxy-based" one, is more secure but more intrusive and more
112 bothersome to set up; it inspects the network traffic much more
113 closely, modifies it and has knowledge about the higher level
114 protocols, which a packet filter lacks. Moreover, proxy-based
115 firewalls often require changes to the programs running on the local
116 clients. Proxy-based firewalls don't need support by the kernel, but
117 they are often combined with a packet filter, which only works if
118 you say Y here.
119
120 You should also say Y here if you intend to use your Linux box as
121 the gateway to the Internet for a local network of machines without
122 globally valid IP addresses. This is called "masquerading": if one
123 of the computers on your local network wants to send something to
124 the outside, your box can "masquerade" as that computer, i.e. it
125 forwards the traffic to the intended outside destination, but
126 modifies the packets to make it look like they came from the
127 firewall box itself. It works both ways: if the outside host
128 replies, the Linux box will silently forward the traffic to the
129 correct local computer. This way, the computers on your local net
130 are completely invisible to the outside world, even though they can
131 reach the outside and can receive replies. It is even possible to
132 run globally visible servers from within a masqueraded local network
133 using a mechanism called portforwarding. Masquerading is also often
134 called NAT (Network Address Translation).
135
136 Another use of Netfilter is in transparent proxying: if a machine on
137 the local network tries to connect to an outside host, your Linux
138 box can transparently forward the traffic to a local server,
139 typically a caching proxy server.
140
141 Yet another use of Netfilter is building a bridging firewall. Using
142 a bridge with Network packet filtering enabled makes iptables "see"
143 the bridged traffic. For filtering on the lower network and Ethernet
144 protocols over the bridge, use ebtables (under bridge netfilter
145 configuration).
146
147 Various modules exist for netfilter which replace the previous
148 masquerading (ipmasqadm), packet filtering (ipchains), transparent
149 proxying, and portforwarding mechanisms. Please see
150 <file:Documentation/Changes> under "iptables" for the location of
151 these packages.
152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153if NETFILTER
154
155config NETFILTER_DEBUG
156 bool "Network packet filtering debugging"
157 depends on NETFILTER
158 help
159 You can say Y here if you want to get additional messages useful in
160 debugging the netfilter code.
161
Patrick McHardy33b8e772007-12-17 22:47:05 -0800162config NETFILTER_ADVANCED
163 bool "Advanced netfilter configuration"
164 depends on NETFILTER
165 default y
166 help
167 If you say Y here you can select between all the netfilter modules.
Matt LaPlante692105b2009-01-26 11:12:25 +0100168 If you say N the more unusual ones will not be shown and the
Patrick McHardy33b8e772007-12-17 22:47:05 -0800169 basic ones needed by most people will default to 'M'.
170
171 If unsure, say Y.
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173config BRIDGE_NETFILTER
174 bool "Bridged IP/ARP packets filtering"
175 depends on BRIDGE && NETFILTER && INET
Patrick McHardy33b8e772007-12-17 22:47:05 -0800176 depends on NETFILTER_ADVANCED
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 default y
178 ---help---
179 Enabling this option will let arptables resp. iptables see bridged
180 ARP resp. IP traffic. If you want a bridging firewall, you probably
181 want this option enabled.
182 Enabling or disabling this option doesn't enable or disable
183 ebtables.
184
185 If unsure, say N.
186
Harald Welte9eb0eec2005-09-17 00:41:21 -0700187source "net/netfilter/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188source "net/ipv4/netfilter/Kconfig"
189source "net/ipv6/netfilter/Kconfig"
190source "net/decnet/netfilter/Kconfig"
191source "net/bridge/netfilter/Kconfig"
192
193endif
194
Arnaldo Carvalho de Melo7c657872005-08-09 20:14:34 -0700195source "net/dccp/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196source "net/sctp/Kconfig"
Andy Groverfe17f842009-02-24 15:30:39 +0000197source "net/rds/Kconfig"
Per Liden1e63e682006-01-16 16:39:13 +0100198source "net/tipc/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700199source "net/atm/Kconfig"
James Chapmanfd558d12010-04-02 06:18:33 +0000200source "net/l2tp/Kconfig"
Patrick McHardya19800d2008-07-05 21:25:39 -0700201source "net/802/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700202source "net/bridge/Kconfig"
Lennert Buytenhek91da11f2008-10-07 13:44:02 +0000203source "net/dsa/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700204source "net/8021q/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205source "net/decnet/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206source "net/llc/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207source "net/ipx/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208source "drivers/net/appletalk/Kconfig"
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700209source "net/x25/Kconfig"
210source "net/lapb/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"
Andy Kingd021c342013-02-06 14:23:56 +0000219source "net/vmw_vsock/Kconfig"
Andrey Vagineaaa3132013-03-21 20:33:48 +0400220source "net/netlink/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
Eric Dumazetdf334542010-03-24 19:13:54 +0000222config RPS
223 boolean
David S. Miller6dcbc122010-09-14 21:41:20 -0700224 depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
Eric Dumazetdf334542010-03-24 19:13:54 +0000225 default y
226
Ben Hutchingsc4454772011-01-19 11:03:53 +0000227config RFS_ACCEL
228 boolean
229 depends on RPS && GENERIC_HARDIRQS
230 select CPU_RMAP
231 default y
232
Tom Herbertbf264142010-11-26 08:36:09 +0000233config XPS
234 boolean
Alexander Duyck024e9672013-01-10 08:57:46 +0000235 depends on SMP && USE_GENERIC_SMP_HELPERS
Tom Herbertbf264142010-11-26 08:36:09 +0000236 default y
237
Neil Horman5bc14212011-11-22 05:10:51 +0000238config NETPRIO_CGROUP
239 tristate "Network priority cgroup"
240 depends on CGROUPS
241 ---help---
242 Cgroup subsystem for use in assigning processes to network priorities on
243 a per-interface basis
244
Tom Herbert114cf582011-11-28 16:33:09 +0000245config BQL
246 boolean
247 depends on SYSFS
248 select DQL
249 default y
250
Eric Dumazet0a148422011-04-20 09:27:32 +0000251config BPF_JIT
252 bool "enable BPF Just In Time compiler"
253 depends on HAVE_BPF_JIT
Eric Dumazetb6202f92011-04-29 10:20:53 -0700254 depends on MODULES
Eric Dumazet0a148422011-04-20 09:27:32 +0000255 ---help---
256 Berkeley Packet Filter filtering capabilities are normally handled
257 by an interpreter. This option allows kernel to generate a native
258 code when filter is loaded in memory. This should speedup
259 packet sniffing (libpcap/tcpdump). Note : Admin should enable
260 this feature changing /proc/sys/net/core/bpf_jit_enable
261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262menu "Network testing"
263
264config NET_PKTGEN
265 tristate "Packet Generator (USE WITH CAUTION)"
266 depends on PROC_FS
267 ---help---
268 This module will inject preconfigured packets, at a configurable
269 rate, out of a given interface. It is used for network interface
270 stress testing and performance analysis. If you don't understand
271 what was just said, you don't need it: say N.
272
273 Documentation on how to use the packet generator can be found
274 at <file:Documentation/networking/pktgen.txt>.
275
276 To compile this code as a module, choose M here: the
277 module will be called pktgen.
278
Stephen Hemmingera42e9d62006-06-05 17:30:32 -0700279config NET_TCPPROBE
280 tristate "TCP connection probing"
Kees Cook911f8632012-10-02 11:19:40 -0700281 depends on INET && PROC_FS && KPROBES
Stephen Hemmingera42e9d62006-06-05 17:30:32 -0700282 ---help---
283 This module allows for capturing the changes to TCP connection
Dave Jones9dadaa192006-06-08 23:42:09 -0700284 state in response to incoming packets. It is used for debugging
Stephen Hemmingera42e9d62006-06-05 17:30:32 -0700285 TCP congestion avoidance modules. If you don't understand
286 what was just said, you don't need it: say N.
287
Grant Grundler82fe7c92006-09-25 23:47:14 -0700288 Documentation on how to use TCP connection probing can be found
Michael Wittenc996d8b2010-11-15 19:55:34 +0000289 at:
290
291 http://www.linuxfoundation.org/collaborate/workgroups/networking/tcpprobe
Stephen Hemmingera42e9d62006-06-05 17:30:32 -0700292
293 To compile this code as a module, choose M here: the
294 module will be called tcp_probe.
295
Neil Horman273ae442009-03-11 09:53:16 +0000296config NET_DROP_MONITOR
Neil Hormancad456d2012-05-17 10:04:00 +0000297 tristate "Network packet drop alerting service"
Kees Cook911f8632012-10-02 11:19:40 -0700298 depends on INET && TRACEPOINTS
Neil Horman273ae442009-03-11 09:53:16 +0000299 ---help---
300 This feature provides an alerting service to userspace in the
301 event that packets are discarded in the network stack. Alerts
302 are broadcast via netlink socket to any listening user space
303 process. If you don't need network drop alerts, or if you are ok
304 just checking the various proc files and other utilities for
305 drop statistics, say N here.
306
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307endmenu
308
309endmenu
310
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311source "net/ax25/Kconfig"
Oliver Hartkopp0d665482007-11-16 15:52:17 -0800312source "net/can/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313source "net/irda/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314source "net/bluetooth/Kconfig"
David Howells17926a72007-04-26 15:48:28 -0700315source "net/rxrpc/Kconfig"
Adrian Bunkd86b5e02006-01-21 00:46:55 +0100316
Thomas Graf14c0b972006-08-04 03:38:38 -0700317config FIB_RULES
318 bool
319
Robert P. J. Day54420602008-07-24 12:20:09 -0400320menuconfig WIRELESS
321 bool "Wireless"
Martin Schwidefskyf54bfc02007-05-10 15:46:01 +0200322 depends on !S390
Robert P. J. Day54420602008-07-24 12:20:09 -0400323 default y
324
325if WIRELESS
Johannes Berg2a5e1c02007-04-23 12:19:12 -0700326
327source "net/wireless/Kconfig"
Jiri Bencf0706e82007-05-05 11:45:53 -0700328source "net/mac80211/Kconfig"
Johannes Berg2a5e1c02007-04-23 12:19:12 -0700329
Robert P. J. Day54420602008-07-24 12:20:09 -0400330endif # WIRELESS
Johannes Berg2a5e1c02007-04-23 12:19:12 -0700331
Inaky Perez-Gonzalezb0c83ae2008-12-23 16:18:24 -0800332source "net/wimax/Kconfig"
333
Ivo van Doorncf4328c2007-05-07 00:34:20 -0700334source "net/rfkill/Kconfig"
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500335source "net/9p/Kconfig"
Sjur Braendeland3908c692010-03-30 13:56:28 +0000336source "net/caif/Kconfig"
Yehuda Sadeh3d14c5d2010-04-06 15:14:15 -0700337source "net/ceph/Kconfig"
Lauro Ramos Venancio3e256b82011-07-01 19:31:33 -0300338source "net/nfc/Kconfig"
Sjur Braendeland3908c692010-03-30 13:56:28 +0000339
Ivo van Doorncf4328c2007-05-07 00:34:20 -0700340
Sam Ravnborg6a2e9b72005-07-11 21:13:56 -0700341endif # if NET
Sam Ravnborge47b65b2012-05-21 20:45:37 +0200342
343# Used by archs to tell that they support BPF_JIT
344config HAVE_BPF_JIT
345 bool