Kconfig 10.9 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4
#
# Network configuration
#

5
menuconfig NET
L
Linus Torvalds 已提交
6
	bool "Networking support"
7
	select NLATTR
L
Linus Torvalds 已提交
8 9 10 11
	---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
12 13 14
	  other computer.
	  
	  If you are upgrading from an older kernel, you
L
Linus Torvalds 已提交
15 16 17 18 19 20 21 22 23
	  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>.

24
if NET
L
Linus Torvalds 已提交
25

26 27 28 29 30 31 32 33 34
config WANT_COMPAT_NETLINK_MESSAGES
	bool
	help
	  This option can be selected by other options that need compat
	  netlink messages.

config COMPAT_NETLINK_MESSAGES
	def_bool y
	depends on COMPAT
35
	depends on WEXT_CORE || WANT_COMPAT_NETLINK_MESSAGES
36 37 38 39 40 41 42 43 44 45
	help
	  This option makes it possible to send different netlink messages
	  to tasks depending on whether the task is a compat task or not. To
	  achieve this, you need to set skb_shinfo(skb)->frag_list to the
	  compat skb before sending the skb, the netlink code will sort out
	  which message to actually pass to the task.

	  Newly written code should NEVER need this option but do
	  compat-independent messages instead!

46
menu "Networking options"
L
Linus Torvalds 已提交
47

48 49 50
source "net/packet/Kconfig"
source "net/unix/Kconfig"
source "net/xfrm/Kconfig"
51
source "net/iucv/Kconfig"
L
Linus Torvalds 已提交
52 53 54

config INET
	bool "TCP/IP networking"
55 56
	select CRYPTO
	select CRYPTO_AES
L
Linus Torvalds 已提交
57 58 59
	---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
60
	  your kernel by about 400 KB), since some programs (e.g. the X window
L
Linus Torvalds 已提交
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
	  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.

77
if INET
L
Linus Torvalds 已提交
78 79
source "net/ipv4/Kconfig"
source "net/ipv6/Kconfig"
P
Paul Moore 已提交
80
source "net/netlabel/Kconfig"
L
Linus Torvalds 已提交
81

82 83
endif # if INET

84 85 86 87 88 89 90
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.

91 92 93 94 95 96 97 98 99 100
config NETWORK_PHY_TIMESTAMPING
	bool "Timestamping in PHY devices"
	depends on EXPERIMENTAL
	help
	  This allows timestamping of network packets by PHYs with
	  hardware timestamping capabilities. This option adds some
	  overhead in the transmit and receive paths.

	  If you are unsure how to answer this question, answer N.

L
Linus Torvalds 已提交
101
menuconfig NETFILTER
102
	bool "Network packet filtering framework (Netfilter)"
L
Linus Torvalds 已提交
103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162
	---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.

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.

163 164 165 166 167 168
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.
169
	  If you say N the more unusual ones will not be shown and the
170 171 172 173
	  basic ones needed by most people will default to 'M'.

	  If unsure, say Y.

L
Linus Torvalds 已提交
174 175 176
config BRIDGE_NETFILTER
	bool "Bridged IP/ARP packets filtering"
	depends on BRIDGE && NETFILTER && INET
177
	depends on NETFILTER_ADVANCED
L
Linus Torvalds 已提交
178 179 180 181 182 183 184 185 186 187
	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.

188
source "net/netfilter/Kconfig"
L
Linus Torvalds 已提交
189 190 191 192 193 194 195
source "net/ipv4/netfilter/Kconfig"
source "net/ipv6/netfilter/Kconfig"
source "net/decnet/netfilter/Kconfig"
source "net/bridge/netfilter/Kconfig"

endif

196
source "net/dccp/Kconfig"
L
Linus Torvalds 已提交
197
source "net/sctp/Kconfig"
A
Andy Grover 已提交
198
source "net/rds/Kconfig"
199
source "net/tipc/Kconfig"
200
source "net/atm/Kconfig"
201
source "net/l2tp/Kconfig"
P
Patrick McHardy 已提交
202
source "net/802/Kconfig"
203
source "net/bridge/Kconfig"
204
source "net/dsa/Kconfig"
205
source "net/8021q/Kconfig"
L
Linus Torvalds 已提交
206 207 208 209
source "net/decnet/Kconfig"
source "net/llc/Kconfig"
source "net/ipx/Kconfig"
source "drivers/net/appletalk/Kconfig"
210 211 212
source "net/x25/Kconfig"
source "net/lapb/Kconfig"
source "net/wanrouter/Kconfig"
213
source "net/phonet/Kconfig"
214
source "net/ieee802154/Kconfig"
215
source "net/mac802154/Kconfig"
L
Linus Torvalds 已提交
216
source "net/sched/Kconfig"
217
source "net/dcb/Kconfig"
218
source "net/dns_resolver/Kconfig"
219
source "net/batman-adv/Kconfig"
220
source "net/openvswitch/Kconfig"
L
Linus Torvalds 已提交
221

E
Eric Dumazet 已提交
222 223
config RPS
	boolean
224
	depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
E
Eric Dumazet 已提交
225 226
	default y

227 228 229 230 231 232
config RFS_ACCEL
	boolean
	depends on RPS && GENERIC_HARDIRQS
	select CPU_RMAP
	default y

T
Tom Herbert 已提交
233 234 235 236 237
config XPS
	boolean
	depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS
	default y

238 239 240 241 242 243 244
config NETPRIO_CGROUP
	tristate "Network priority cgroup"
	depends on CGROUPS
	---help---
	  Cgroup subsystem for use in assigning processes to network priorities on
	  a per-interface basis

T
Tom Herbert 已提交
245 246 247 248 249 250
config BQL
	boolean
	depends on SYSFS
	select DQL
	default y

251 252 253
config BPF_JIT
	bool "enable BPF Just In Time compiler"
	depends on HAVE_BPF_JIT
E
Eric Dumazet 已提交
254
	depends on MODULES
255 256 257 258 259 260 261
	---help---
	  Berkeley Packet Filter filtering capabilities are normally handled
	  by an interpreter. This option allows kernel to generate a native
	  code when filter is loaded in memory. This should speedup
	  packet sniffing (libpcap/tcpdump). Note : Admin should enable
	  this feature changing /proc/sys/net/core/bpf_jit_enable

L
Linus Torvalds 已提交
262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278
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.

279 280 281 282 283
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
D
Dave Jones 已提交
284
	state in response to incoming packets. It is used for debugging
285 286 287
	TCP congestion avoidance modules. If you don't understand
	what was just said, you don't need it: say N.

288
	Documentation on how to use TCP connection probing can be found
289 290 291
	at:
	
	  http://www.linuxfoundation.org/collaborate/workgroups/networking/tcpprobe
292 293 294 295

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

296
config NET_DROP_MONITOR
297
	tristate "Network packet drop alerting service"
298 299 300 301 302 303 304 305 306
	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.

L
Linus Torvalds 已提交
307 308 309 310 311
endmenu

endmenu

source "net/ax25/Kconfig"
O
Oliver Hartkopp 已提交
312
source "net/can/Kconfig"
L
Linus Torvalds 已提交
313 314
source "net/irda/Kconfig"
source "net/bluetooth/Kconfig"
315
source "net/rxrpc/Kconfig"
316

317 318 319
config FIB_RULES
	bool

320 321
menuconfig WIRELESS
	bool "Wireless"
322
	depends on !S390
323 324 325
	default y

if WIRELESS
326 327

source "net/wireless/Kconfig"
328
source "net/mac80211/Kconfig"
329

330
endif # WIRELESS
331

332 333
source "net/wimax/Kconfig"

334
source "net/rfkill/Kconfig"
335
source "net/9p/Kconfig"
336
source "net/caif/Kconfig"
337
source "net/ceph/Kconfig"
338
source "net/nfc/Kconfig"
339

340

341
endif   # if NET
342 343 344 345

# Used by archs to tell that they support BPF_JIT
config HAVE_BPF_JIT
	bool