]> bbs.cooldavid.org Git - net-next-2.6.git/blame - net/Kconfig
netlink: netlink_recvmsg() fix
[net-next-2.6.git] / net / Kconfig
CommitLineData
1da177e4
LT
1#
2# Network configuration
3#
4
031cf19e 5menuconfig NET
1da177e4 6 bool "Networking support"
e9cc8bdd 7 select NLATTR
1da177e4
LT
8 ---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
d5950b43
SR
12 other computer.
13
14 If you are upgrading from an older kernel, you
1da177e4
LT
15 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
6a2e9b73 24if NET
1da177e4 25
1dacc76d
JB
26config 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
35 depends on WIRELESS_EXT || WANT_COMPAT_NETLINK_MESSAGES
36 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
6a2e9b73 46menu "Networking options"
1da177e4 47
6a2e9b73
SR
48source "net/packet/Kconfig"
49source "net/unix/Kconfig"
50source "net/xfrm/Kconfig"
2356f4cb 51source "net/iucv/Kconfig"
1da177e4
LT
52
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
cf80efc2 58 your kernel by about 400 KB), since some programs (e.g. the X window
1da177e4
LT
59 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
6a2e9b73 75if INET
1da177e4 76source "net/ipv4/Kconfig"
1da177e4 77source "net/ipv6/Kconfig"
38c94377 78source "net/netlabel/Kconfig"
1da177e4 79
6a2e9b73
SR
80endif # if INET
81
984bc16c
JM
82config 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
c1f19b51
RC
89config 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
1da177e4 99menuconfig NETFILTER
ef91fd52 100 bool "Network packet filtering framework (Netfilter)"
1da177e4
LT
101 ---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
1da177e4
LT
152if 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
33b8e776
PM
161config 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.
692105b8 167 If you say N the more unusual ones will not be shown and the
33b8e776
PM
168 basic ones needed by most people will default to 'M'.
169
170 If unsure, say Y.
171
1da177e4
LT
172config BRIDGE_NETFILTER
173 bool "Bridged IP/ARP packets filtering"
174 depends on BRIDGE && NETFILTER && INET
33b8e776 175 depends on NETFILTER_ADVANCED
1da177e4
LT
176 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
9eb0eec7 186source "net/netfilter/Kconfig"
1da177e4
LT
187source "net/ipv4/netfilter/Kconfig"
188source "net/ipv6/netfilter/Kconfig"
189source "net/decnet/netfilter/Kconfig"
190source "net/bridge/netfilter/Kconfig"
191
192endif
193
7c657876 194source "net/dccp/Kconfig"
1da177e4 195source "net/sctp/Kconfig"
fe17f84f 196source "net/rds/Kconfig"
1e63e681 197source "net/tipc/Kconfig"
6a2e9b73 198source "net/atm/Kconfig"
fd558d18 199source "net/l2tp/Kconfig"
a19800d7 200source "net/802/Kconfig"
6a2e9b73 201source "net/bridge/Kconfig"
91da11f8 202source "net/dsa/Kconfig"
6a2e9b73 203source "net/8021q/Kconfig"
1da177e4 204source "net/decnet/Kconfig"
1da177e4 205source "net/llc/Kconfig"
1da177e4 206source "net/ipx/Kconfig"
1da177e4 207source "drivers/net/appletalk/Kconfig"
6a2e9b73
SR
208source "net/x25/Kconfig"
209source "net/lapb/Kconfig"
6a2e9b73
SR
210source "net/econet/Kconfig"
211source "net/wanrouter/Kconfig"
5075138d 212source "net/phonet/Kconfig"
9ec76716 213source "net/ieee802154/Kconfig"
1da177e4 214source "net/sched/Kconfig"
2f90b865 215source "net/dcb/Kconfig"
1da177e4 216
df334545
ED
217config RPS
218 boolean
219 depends on SMP && SYSFS
220 default y
221
1da177e4
LT
222menu "Network testing"
223
224config NET_PKTGEN
225 tristate "Packet Generator (USE WITH CAUTION)"
226 depends on PROC_FS
227 ---help---
228 This module will inject preconfigured packets, at a configurable
229 rate, out of a given interface. It is used for network interface
230 stress testing and performance analysis. If you don't understand
231 what was just said, you don't need it: say N.
232
233 Documentation on how to use the packet generator can be found
234 at <file:Documentation/networking/pktgen.txt>.
235
236 To compile this code as a module, choose M here: the
237 module will be called pktgen.
238
a42e9d6c
SH
239config NET_TCPPROBE
240 tristate "TCP connection probing"
241 depends on INET && EXPERIMENTAL && PROC_FS && KPROBES
242 ---help---
243 This module allows for capturing the changes to TCP connection
9dadaa19 244 state in response to incoming packets. It is used for debugging
a42e9d6c
SH
245 TCP congestion avoidance modules. If you don't understand
246 what was just said, you don't need it: say N.
247
82fe7c92 248 Documentation on how to use TCP connection probing can be found
a42e9d6c
SH
249 at http://linux-net.osdl.org/index.php/TcpProbe
250
251 To compile this code as a module, choose M here: the
252 module will be called tcp_probe.
253
273ae44b
NH
254config NET_DROP_MONITOR
255 boolean "Network packet drop alerting service"
256 depends on INET && EXPERIMENTAL && TRACEPOINTS
257 ---help---
258 This feature provides an alerting service to userspace in the
259 event that packets are discarded in the network stack. Alerts
260 are broadcast via netlink socket to any listening user space
261 process. If you don't need network drop alerts, or if you are ok
262 just checking the various proc files and other utilities for
263 drop statistics, say N here.
264
1da177e4
LT
265endmenu
266
267endmenu
268
1da177e4 269source "net/ax25/Kconfig"
0d66548a 270source "net/can/Kconfig"
1da177e4 271source "net/irda/Kconfig"
1da177e4 272source "net/bluetooth/Kconfig"
17926a79 273source "net/rxrpc/Kconfig"
d86b5e0e 274
14c0b97d
TG
275config FIB_RULES
276 bool
277
5442060c
RD
278menuconfig WIRELESS
279 bool "Wireless"
f54bfc0e 280 depends on !S390
5442060c
RD
281 default y
282
283if WIRELESS
2a5e1c0e
JB
284
285source "net/wireless/Kconfig"
f0706e82 286source "net/mac80211/Kconfig"
2a5e1c0e 287
5442060c 288endif # WIRELESS
2a5e1c0e 289
b0c83ae1
IPG
290source "net/wimax/Kconfig"
291
cf4328cd 292source "net/rfkill/Kconfig"
bd238fb4 293source "net/9p/Kconfig"
3908c690
SB
294source "net/caif/Kconfig"
295
cf4328cd 296
6a2e9b73 297endif # if NET