1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 # 2 #
3 # Network configuration 3 # Network configuration
4 # 4 #
5 5
6 menuconfig NET 6 menuconfig NET
7 bool "Networking support" 7 bool "Networking support"
8 select NLATTR 8 select NLATTR
9 select GENERIC_NET_UTILS 9 select GENERIC_NET_UTILS
10 select BPF 10 select BPF
11 help 11 help
12 Unless you really know what you are 12 Unless you really know what you are doing, you should say Y here.
13 The reason is that some programs nee 13 The reason is that some programs need kernel networking support even
14 when running on a stand-alone machin 14 when running on a stand-alone machine that isn't connected to any
15 other computer. 15 other computer.
16 16
17 If you are upgrading from an older k 17 If you are upgrading from an older kernel, you
18 should consider updating your networ 18 should consider updating your networking tools too because changes
19 in the kernel and the tools often go 19 in the kernel and the tools often go hand in hand. The tools are
20 contained in the package net-tools, 20 contained in the package net-tools, the location and version number
21 of which are given in <file:Document 21 of which are given in <file:Documentation/Changes>.
22 22
23 For a general introduction to Linux 23 For a general introduction to Linux networking, it is highly
24 recommended to read the NET-HOWTO, a 24 recommended to read the NET-HOWTO, available from
25 <http://www.tldp.org/docs.html#howto 25 <http://www.tldp.org/docs.html#howto>.
26 26
27 if NET 27 if NET
28 28
29 config WANT_COMPAT_NETLINK_MESSAGES 29 config WANT_COMPAT_NETLINK_MESSAGES
30 bool 30 bool
31 help 31 help
32 This option can be selected by other 32 This option can be selected by other options that need compat
33 netlink messages. 33 netlink messages.
34 34
35 config COMPAT_NETLINK_MESSAGES 35 config COMPAT_NETLINK_MESSAGES
36 def_bool y 36 def_bool y
37 depends on COMPAT 37 depends on COMPAT
38 depends on WEXT_CORE || WANT_COMPAT_NE 38 depends on WEXT_CORE || WANT_COMPAT_NETLINK_MESSAGES
39 help 39 help
40 This option makes it possible to sen 40 This option makes it possible to send different netlink messages
41 to tasks depending on whether the ta 41 to tasks depending on whether the task is a compat task or not. To
42 achieve this, you need to set skb_sh 42 achieve this, you need to set skb_shinfo(skb)->frag_list to the
43 compat skb before sending the skb, t 43 compat skb before sending the skb, the netlink code will sort out
44 which message to actually pass to th 44 which message to actually pass to the task.
45 45
46 Newly written code should NEVER need 46 Newly written code should NEVER need this option but do
47 compat-independent messages instead! 47 compat-independent messages instead!
48 48
49 config NET_INGRESS 49 config NET_INGRESS
50 bool 50 bool
51 51
52 config NET_EGRESS 52 config NET_EGRESS
53 bool 53 bool
54 54
55 config NET_XGRESS <<
56 select NET_INGRESS <<
57 select NET_EGRESS <<
58 bool <<
59 <<
60 config NET_REDIRECT 55 config NET_REDIRECT
61 bool 56 bool
62 57
63 config SKB_DECRYPTED <<
64 bool <<
65 <<
66 config SKB_EXTENSIONS 58 config SKB_EXTENSIONS
67 bool 59 bool
68 60
69 config NET_DEVMEM <<
70 def_bool y <<
71 depends on DMA_SHARED_BUFFER <<
72 depends on GENERIC_ALLOCATOR <<
73 depends on PAGE_POOL <<
74 <<
75 menu "Networking options" 61 menu "Networking options"
76 62
77 source "net/packet/Kconfig" 63 source "net/packet/Kconfig"
78 source "net/unix/Kconfig" 64 source "net/unix/Kconfig"
79 source "net/tls/Kconfig" 65 source "net/tls/Kconfig"
80 source "net/xfrm/Kconfig" 66 source "net/xfrm/Kconfig"
81 source "net/iucv/Kconfig" 67 source "net/iucv/Kconfig"
82 source "net/smc/Kconfig" 68 source "net/smc/Kconfig"
83 source "net/xdp/Kconfig" 69 source "net/xdp/Kconfig"
84 70
85 config NET_HANDSHAKE 71 config NET_HANDSHAKE
86 bool 72 bool
87 depends on SUNRPC || NVME_TARGET_TCP | 73 depends on SUNRPC || NVME_TARGET_TCP || NVME_TCP
88 default y 74 default y
89 75
90 config NET_HANDSHAKE_KUNIT_TEST 76 config NET_HANDSHAKE_KUNIT_TEST
91 tristate "KUnit tests for the handshak 77 tristate "KUnit tests for the handshake upcall mechanism" if !KUNIT_ALL_TESTS
92 default KUNIT_ALL_TESTS 78 default KUNIT_ALL_TESTS
93 depends on KUNIT 79 depends on KUNIT
94 help 80 help
95 This builds the KUnit tests for the 81 This builds the KUnit tests for the handshake upcall mechanism.
96 82
97 KUnit tests run during boot and outp 83 KUnit tests run during boot and output the results to the debug
98 log in TAP format (https://testanyth 84 log in TAP format (https://testanything.org/). Only useful for
99 kernel devs running KUnit test harne 85 kernel devs running KUnit test harness and are not for inclusion
100 into a production build. 86 into a production build.
101 87
102 For more information on KUnit and un 88 For more information on KUnit and unit tests in general, refer
103 to the KUnit documentation in Docume 89 to the KUnit documentation in Documentation/dev-tools/kunit/.
104 90
105 config INET 91 config INET
106 bool "TCP/IP networking" 92 bool "TCP/IP networking"
107 help 93 help
108 These are the protocols used on the 94 These are the protocols used on the Internet and on most local
109 Ethernets. It is highly recommended 95 Ethernets. It is highly recommended to say Y here (this will enlarge
110 your kernel by about 400 KB), since 96 your kernel by about 400 KB), since some programs (e.g. the X window
111 system) use TCP/IP even if your mach 97 system) use TCP/IP even if your machine is not connected to any
112 other computer. You will get the so- 98 other computer. You will get the so-called loopback device which
113 allows you to ping yourself (great f 99 allows you to ping yourself (great fun, that!).
114 100
115 For an excellent introduction to Lin 101 For an excellent introduction to Linux networking, please read the
116 Linux Networking HOWTO, available fr 102 Linux Networking HOWTO, available from
117 <http://www.tldp.org/docs.html#howto 103 <http://www.tldp.org/docs.html#howto>.
118 104
119 If you say Y here and also to "/proc 105 If you say Y here and also to "/proc file system support" and
120 "Sysctl support" below, you can chan 106 "Sysctl support" below, you can change various aspects of the
121 behavior of the TCP/IP code by writi 107 behavior of the TCP/IP code by writing to the (virtual) files in
122 /proc/sys/net/ipv4/*; the options ar 108 /proc/sys/net/ipv4/*; the options are explained in the file
123 <file:Documentation/networking/ip-sy 109 <file:Documentation/networking/ip-sysctl.rst>.
124 110
125 Short answer: say Y. 111 Short answer: say Y.
126 112
127 if INET 113 if INET
128 source "net/ipv4/Kconfig" 114 source "net/ipv4/Kconfig"
129 source "net/ipv6/Kconfig" 115 source "net/ipv6/Kconfig"
130 source "net/netlabel/Kconfig" 116 source "net/netlabel/Kconfig"
131 source "net/mptcp/Kconfig" 117 source "net/mptcp/Kconfig"
132 118
133 endif # if INET 119 endif # if INET
134 120
135 config NETWORK_SECMARK 121 config NETWORK_SECMARK
136 bool "Security Marking" 122 bool "Security Marking"
137 help 123 help
138 This enables security marking of net 124 This enables security marking of network packets, similar
139 to nfmark, but designated for securi 125 to nfmark, but designated for security purposes.
140 If you are unsure how to answer this 126 If you are unsure how to answer this question, answer N.
141 127
142 config NET_PTP_CLASSIFY 128 config NET_PTP_CLASSIFY
143 def_bool n 129 def_bool n
144 130
145 config NETWORK_PHY_TIMESTAMPING 131 config NETWORK_PHY_TIMESTAMPING
146 bool "Timestamping in PHY devices" 132 bool "Timestamping in PHY devices"
147 select NET_PTP_CLASSIFY 133 select NET_PTP_CLASSIFY
148 help 134 help
149 This allows timestamping of network 135 This allows timestamping of network packets by PHYs (or
150 other MII bus snooping devices) with 136 other MII bus snooping devices) with hardware timestamping
151 capabilities. This option adds some 137 capabilities. This option adds some overhead in the transmit
152 and receive paths. 138 and receive paths.
153 139
154 If you are unsure how to answer this 140 If you are unsure how to answer this question, answer N.
155 141
156 menuconfig NETFILTER 142 menuconfig NETFILTER
157 bool "Network packet filtering framewo 143 bool "Network packet filtering framework (Netfilter)"
158 help 144 help
159 Netfilter is a framework for filteri 145 Netfilter is a framework for filtering and mangling network packets
160 that pass through your Linux box. 146 that pass through your Linux box.
161 147
162 The most common use of packet filter 148 The most common use of packet filtering is to run your Linux box as
163 a firewall protecting a local networ 149 a firewall protecting a local network from the Internet. The type of
164 firewall provided by this kernel sup 150 firewall provided by this kernel support is called a "packet
165 filter", which means that it can rej 151 filter", which means that it can reject individual network packets
166 based on type, source, destination e 152 based on type, source, destination etc. The other kind of firewall,
167 a "proxy-based" one, is more secure 153 a "proxy-based" one, is more secure but more intrusive and more
168 bothersome to set up; it inspects th 154 bothersome to set up; it inspects the network traffic much more
169 closely, modifies it and has knowled 155 closely, modifies it and has knowledge about the higher level
170 protocols, which a packet filter lac 156 protocols, which a packet filter lacks. Moreover, proxy-based
171 firewalls often require changes to t 157 firewalls often require changes to the programs running on the local
172 clients. Proxy-based firewalls don't 158 clients. Proxy-based firewalls don't need support by the kernel, but
173 they are often combined with a packe 159 they are often combined with a packet filter, which only works if
174 you say Y here. 160 you say Y here.
175 161
176 You should also say Y here if you in 162 You should also say Y here if you intend to use your Linux box as
177 the gateway to the Internet for a lo 163 the gateway to the Internet for a local network of machines without
178 globally valid IP addresses. This is 164 globally valid IP addresses. This is called "masquerading": if one
179 of the computers on your local netwo 165 of the computers on your local network wants to send something to
180 the outside, your box can "masquerad 166 the outside, your box can "masquerade" as that computer, i.e. it
181 forwards the traffic to the intended 167 forwards the traffic to the intended outside destination, but
182 modifies the packets to make it look 168 modifies the packets to make it look like they came from the
183 firewall box itself. It works both w 169 firewall box itself. It works both ways: if the outside host
184 replies, the Linux box will silently 170 replies, the Linux box will silently forward the traffic to the
185 correct local computer. This way, th 171 correct local computer. This way, the computers on your local net
186 are completely invisible to the outs 172 are completely invisible to the outside world, even though they can
187 reach the outside and can receive re 173 reach the outside and can receive replies. It is even possible to
188 run globally visible servers from wi 174 run globally visible servers from within a masqueraded local network
189 using a mechanism called portforward 175 using a mechanism called portforwarding. Masquerading is also often
190 called NAT (Network Address Translat 176 called NAT (Network Address Translation).
191 177
192 Another use of Netfilter is in trans 178 Another use of Netfilter is in transparent proxying: if a machine on
193 the local network tries to connect t 179 the local network tries to connect to an outside host, your Linux
194 box can transparently forward the tr 180 box can transparently forward the traffic to a local server,
195 typically a caching proxy server. 181 typically a caching proxy server.
196 182
197 Yet another use of Netfilter is buil 183 Yet another use of Netfilter is building a bridging firewall. Using
198 a bridge with Network packet filteri 184 a bridge with Network packet filtering enabled makes iptables "see"
199 the bridged traffic. For filtering o 185 the bridged traffic. For filtering on the lower network and Ethernet
200 protocols over the bridge, use ebtab 186 protocols over the bridge, use ebtables (under bridge netfilter
201 configuration). 187 configuration).
202 188
203 Various modules exist for netfilter 189 Various modules exist for netfilter which replace the previous
204 masquerading (ipmasqadm), packet fil 190 masquerading (ipmasqadm), packet filtering (ipchains), transparent
205 proxying, and portforwarding mechani 191 proxying, and portforwarding mechanisms. Please see
206 <file:Documentation/Changes> under " 192 <file:Documentation/Changes> under "iptables" for the location of
207 these packages. 193 these packages.
208 194
209 if NETFILTER 195 if NETFILTER
210 196
211 config NETFILTER_ADVANCED 197 config NETFILTER_ADVANCED
212 bool "Advanced netfilter configuration 198 bool "Advanced netfilter configuration"
213 depends on NETFILTER 199 depends on NETFILTER
214 default y 200 default y
215 help 201 help
216 If you say Y here you can select bet 202 If you say Y here you can select between all the netfilter modules.
217 If you say N the more unusual ones w 203 If you say N the more unusual ones will not be shown and the
218 basic ones needed by most people wil 204 basic ones needed by most people will default to 'M'.
219 205
220 If unsure, say Y. 206 If unsure, say Y.
221 207
222 config BRIDGE_NETFILTER 208 config BRIDGE_NETFILTER
223 tristate "Bridged IP/ARP packets filte 209 tristate "Bridged IP/ARP packets filtering"
224 depends on BRIDGE 210 depends on BRIDGE
225 depends on NETFILTER && INET 211 depends on NETFILTER && INET
226 depends on NETFILTER_ADVANCED 212 depends on NETFILTER_ADVANCED
227 select NETFILTER_FAMILY_BRIDGE 213 select NETFILTER_FAMILY_BRIDGE
228 select SKB_EXTENSIONS 214 select SKB_EXTENSIONS
229 help 215 help
230 Enabling this option will let arptab 216 Enabling this option will let arptables resp. iptables see bridged
231 ARP resp. IP traffic. If you want a 217 ARP resp. IP traffic. If you want a bridging firewall, you probably
232 want this option enabled. 218 want this option enabled.
233 Enabling or disabling this option do 219 Enabling or disabling this option doesn't enable or disable
234 ebtables. 220 ebtables.
235 221
236 If unsure, say N. 222 If unsure, say N.
237 223
238 source "net/netfilter/Kconfig" 224 source "net/netfilter/Kconfig"
239 source "net/ipv4/netfilter/Kconfig" 225 source "net/ipv4/netfilter/Kconfig"
240 source "net/ipv6/netfilter/Kconfig" 226 source "net/ipv6/netfilter/Kconfig"
241 source "net/bridge/netfilter/Kconfig" 227 source "net/bridge/netfilter/Kconfig"
242 228
243 endif 229 endif
244 230
>> 231 source "net/bpfilter/Kconfig"
>> 232
245 source "net/dccp/Kconfig" 233 source "net/dccp/Kconfig"
246 source "net/sctp/Kconfig" 234 source "net/sctp/Kconfig"
247 source "net/rds/Kconfig" 235 source "net/rds/Kconfig"
248 source "net/tipc/Kconfig" 236 source "net/tipc/Kconfig"
249 source "net/atm/Kconfig" 237 source "net/atm/Kconfig"
250 source "net/l2tp/Kconfig" 238 source "net/l2tp/Kconfig"
251 source "net/802/Kconfig" 239 source "net/802/Kconfig"
252 source "net/bridge/Kconfig" 240 source "net/bridge/Kconfig"
253 source "net/dsa/Kconfig" 241 source "net/dsa/Kconfig"
254 source "net/8021q/Kconfig" 242 source "net/8021q/Kconfig"
255 source "net/llc/Kconfig" 243 source "net/llc/Kconfig"
256 source "net/appletalk/Kconfig" !! 244 source "drivers/net/appletalk/Kconfig"
257 source "net/x25/Kconfig" 245 source "net/x25/Kconfig"
258 source "net/lapb/Kconfig" 246 source "net/lapb/Kconfig"
259 source "net/phonet/Kconfig" 247 source "net/phonet/Kconfig"
260 source "net/6lowpan/Kconfig" 248 source "net/6lowpan/Kconfig"
261 source "net/ieee802154/Kconfig" 249 source "net/ieee802154/Kconfig"
262 source "net/mac802154/Kconfig" 250 source "net/mac802154/Kconfig"
263 source "net/sched/Kconfig" 251 source "net/sched/Kconfig"
264 source "net/dcb/Kconfig" 252 source "net/dcb/Kconfig"
265 source "net/dns_resolver/Kconfig" 253 source "net/dns_resolver/Kconfig"
266 source "net/batman-adv/Kconfig" 254 source "net/batman-adv/Kconfig"
267 source "net/openvswitch/Kconfig" 255 source "net/openvswitch/Kconfig"
268 source "net/vmw_vsock/Kconfig" 256 source "net/vmw_vsock/Kconfig"
269 source "net/netlink/Kconfig" 257 source "net/netlink/Kconfig"
270 source "net/mpls/Kconfig" 258 source "net/mpls/Kconfig"
271 source "net/nsh/Kconfig" 259 source "net/nsh/Kconfig"
272 source "net/hsr/Kconfig" 260 source "net/hsr/Kconfig"
273 source "net/switchdev/Kconfig" 261 source "net/switchdev/Kconfig"
274 source "net/l3mdev/Kconfig" 262 source "net/l3mdev/Kconfig"
275 source "net/qrtr/Kconfig" 263 source "net/qrtr/Kconfig"
276 source "net/ncsi/Kconfig" 264 source "net/ncsi/Kconfig"
277 265
278 config PCPU_DEV_REFCNT 266 config PCPU_DEV_REFCNT
279 bool "Use percpu variables to maintain 267 bool "Use percpu variables to maintain network device refcount"
280 depends on SMP 268 depends on SMP
281 default y 269 default y
282 help 270 help
283 network device refcount are using pe 271 network device refcount are using per cpu variables if this option is set.
284 This can be forced to N to detect un 272 This can be forced to N to detect underflows (with a performance drop).
285 273
286 config MAX_SKB_FRAGS 274 config MAX_SKB_FRAGS
287 int "Maximum number of fragments per s 275 int "Maximum number of fragments per skb_shared_info"
288 range 17 45 276 range 17 45
289 default 17 277 default 17
290 help 278 help
291 Having more fragments per skb_shared 279 Having more fragments per skb_shared_info can help GRO efficiency.
292 This helps BIG TCP workloads, but mi 280 This helps BIG TCP workloads, but might expose bugs in some
293 legacy drivers. 281 legacy drivers.
294 This also increases memory overhead 282 This also increases memory overhead of small packets,
295 and in drivers using build_skb(). 283 and in drivers using build_skb().
296 If unsure, say 17. 284 If unsure, say 17.
297 285
298 config RPS 286 config RPS
299 bool "Receive packet steering" !! 287 bool
300 depends on SMP && SYSFS 288 depends on SMP && SYSFS
301 default y 289 default y
302 help <<
303 Software receive side packet steerin <<
304 load of received packet processing a <<
305 290
306 config RFS_ACCEL 291 config RFS_ACCEL
307 bool "Hardware acceleration of RFS" !! 292 bool
308 depends on RPS 293 depends on RPS
309 select CPU_RMAP 294 select CPU_RMAP
310 default y 295 default y
311 help <<
312 Allowing drivers for multiqueue hard <<
313 accelerate RFS. <<
314 296
315 config SOCK_RX_QUEUE_MAPPING 297 config SOCK_RX_QUEUE_MAPPING
316 bool 298 bool
317 299
318 config XPS 300 config XPS
319 bool 301 bool
320 depends on SMP 302 depends on SMP
321 select SOCK_RX_QUEUE_MAPPING 303 select SOCK_RX_QUEUE_MAPPING
322 default y 304 default y
323 305
324 config HWBM 306 config HWBM
325 bool 307 bool
326 308
327 config CGROUP_NET_PRIO 309 config CGROUP_NET_PRIO
328 bool "Network priority cgroup" 310 bool "Network priority cgroup"
329 depends on CGROUPS 311 depends on CGROUPS
330 select SOCK_CGROUP_DATA 312 select SOCK_CGROUP_DATA
331 help 313 help
332 Cgroup subsystem for use in assignin 314 Cgroup subsystem for use in assigning processes to network priorities on
333 a per-interface basis. 315 a per-interface basis.
334 316
335 config CGROUP_NET_CLASSID 317 config CGROUP_NET_CLASSID
336 bool "Network classid cgroup" 318 bool "Network classid cgroup"
337 depends on CGROUPS 319 depends on CGROUPS
338 select SOCK_CGROUP_DATA 320 select SOCK_CGROUP_DATA
339 help 321 help
340 Cgroup subsystem for use as general 322 Cgroup subsystem for use as general purpose socket classid marker that is
341 being used in cls_cgroup and for net 323 being used in cls_cgroup and for netfilter matching.
342 324
343 config NET_RX_BUSY_POLL 325 config NET_RX_BUSY_POLL
344 bool 326 bool
345 default y if !PREEMPT_RT || (PREEMPT_R !! 327 default y if !PREEMPT_RT
346 328
347 config BQL 329 config BQL
348 bool 330 bool
349 prompt "Enable Byte Queue Limits" <<
350 depends on SYSFS 331 depends on SYSFS
351 select DQL 332 select DQL
352 default y 333 default y
353 334
354 config BPF_STREAM_PARSER 335 config BPF_STREAM_PARSER
355 bool "enable BPF STREAM_PARSER" 336 bool "enable BPF STREAM_PARSER"
356 depends on INET 337 depends on INET
357 depends on BPF_SYSCALL 338 depends on BPF_SYSCALL
358 depends on CGROUP_BPF 339 depends on CGROUP_BPF
359 select STREAM_PARSER 340 select STREAM_PARSER
360 select NET_SOCK_MSG 341 select NET_SOCK_MSG
361 help 342 help
362 Enabling this allows a TCP stream pa 343 Enabling this allows a TCP stream parser to be used with
363 BPF_MAP_TYPE_SOCKMAP. 344 BPF_MAP_TYPE_SOCKMAP.
364 345
365 config NET_FLOW_LIMIT 346 config NET_FLOW_LIMIT
366 bool "Net flow limit" !! 347 bool
367 depends on RPS 348 depends on RPS
368 default y 349 default y
369 help 350 help
370 The network stack has to drop packet 351 The network stack has to drop packets when a receive processing CPU's
371 backlog reaches netdev_max_backlog. 352 backlog reaches netdev_max_backlog. If a few out of many active flows
372 generate the vast majority of load, 353 generate the vast majority of load, drop their traffic earlier to
373 maintain capacity for the other flow 354 maintain capacity for the other flows. This feature provides servers
374 with many clients some protection ag 355 with many clients some protection against DoS by a single (spoofed)
375 flow that greatly exceeds average wo 356 flow that greatly exceeds average workload.
376 357
377 menu "Network testing" 358 menu "Network testing"
378 359
379 config NET_PKTGEN 360 config NET_PKTGEN
380 tristate "Packet Generator (USE WITH C 361 tristate "Packet Generator (USE WITH CAUTION)"
381 depends on INET && PROC_FS 362 depends on INET && PROC_FS
382 help 363 help
383 This module will inject preconfigure 364 This module will inject preconfigured packets, at a configurable
384 rate, out of a given interface. It 365 rate, out of a given interface. It is used for network interface
385 stress testing and performance analy 366 stress testing and performance analysis. If you don't understand
386 what was just said, you don't need i 367 what was just said, you don't need it: say N.
387 368
388 Documentation on how to use the pack 369 Documentation on how to use the packet generator can be found
389 at <file:Documentation/networking/pk 370 at <file:Documentation/networking/pktgen.rst>.
390 371
391 To compile this code as a module, ch 372 To compile this code as a module, choose M here: the
392 module will be called pktgen. 373 module will be called pktgen.
393 374
394 config NET_DROP_MONITOR 375 config NET_DROP_MONITOR
395 tristate "Network packet drop alerting 376 tristate "Network packet drop alerting service"
396 depends on INET && TRACEPOINTS 377 depends on INET && TRACEPOINTS
397 help 378 help
398 This feature provides an alerting se 379 This feature provides an alerting service to userspace in the
399 event that packets are discarded in 380 event that packets are discarded in the network stack. Alerts
400 are broadcast via netlink socket to 381 are broadcast via netlink socket to any listening user space
401 process. If you don't need network 382 process. If you don't need network drop alerts, or if you are ok
402 just checking the various proc files 383 just checking the various proc files and other utilities for
403 drop statistics, say N here. 384 drop statistics, say N here.
404 385
405 endmenu 386 endmenu
406 387
407 endmenu 388 endmenu
408 389
409 source "net/ax25/Kconfig" 390 source "net/ax25/Kconfig"
410 source "net/can/Kconfig" 391 source "net/can/Kconfig"
411 source "net/bluetooth/Kconfig" 392 source "net/bluetooth/Kconfig"
412 source "net/rxrpc/Kconfig" 393 source "net/rxrpc/Kconfig"
413 source "net/kcm/Kconfig" 394 source "net/kcm/Kconfig"
414 source "net/strparser/Kconfig" 395 source "net/strparser/Kconfig"
415 source "net/mctp/Kconfig" 396 source "net/mctp/Kconfig"
416 397
417 config FIB_RULES 398 config FIB_RULES
418 bool 399 bool
419 400
420 menuconfig WIRELESS 401 menuconfig WIRELESS
421 bool "Wireless" 402 bool "Wireless"
422 depends on !S390 403 depends on !S390
423 default y 404 default y
424 405
425 if WIRELESS 406 if WIRELESS
426 407
427 source "net/wireless/Kconfig" 408 source "net/wireless/Kconfig"
428 source "net/mac80211/Kconfig" 409 source "net/mac80211/Kconfig"
429 410
430 endif # WIRELESS 411 endif # WIRELESS
431 412
432 source "net/rfkill/Kconfig" 413 source "net/rfkill/Kconfig"
433 source "net/9p/Kconfig" 414 source "net/9p/Kconfig"
434 source "net/caif/Kconfig" 415 source "net/caif/Kconfig"
435 source "net/ceph/Kconfig" 416 source "net/ceph/Kconfig"
436 source "net/nfc/Kconfig" 417 source "net/nfc/Kconfig"
437 source "net/psample/Kconfig" 418 source "net/psample/Kconfig"
438 source "net/ife/Kconfig" 419 source "net/ife/Kconfig"
439 420
440 config LWTUNNEL 421 config LWTUNNEL
441 bool "Network light weight tunnels" 422 bool "Network light weight tunnels"
442 help 423 help
443 This feature provides an infrastruct 424 This feature provides an infrastructure to support light weight
444 tunnels like mpls. There is no netde 425 tunnels like mpls. There is no netdevice associated with a light
445 weight tunnel endpoint. Tunnel encap 426 weight tunnel endpoint. Tunnel encapsulation parameters are stored
446 with light weight tunnel state assoc 427 with light weight tunnel state associated with fib routes.
447 428
448 config LWTUNNEL_BPF 429 config LWTUNNEL_BPF
449 bool "Execute BPF program as route nex 430 bool "Execute BPF program as route nexthop action"
450 depends on LWTUNNEL && INET 431 depends on LWTUNNEL && INET
451 default y if LWTUNNEL=y 432 default y if LWTUNNEL=y
452 help 433 help
453 Allows to run BPF programs as a next 434 Allows to run BPF programs as a nexthop action following a route
454 lookup for incoming and outgoing pac 435 lookup for incoming and outgoing packets.
455 436
456 config DST_CACHE 437 config DST_CACHE
457 bool 438 bool
458 default n 439 default n
459 440
460 config GRO_CELLS 441 config GRO_CELLS
461 bool 442 bool
462 default n 443 default n
463 444
464 config SOCK_VALIDATE_XMIT 445 config SOCK_VALIDATE_XMIT
465 bool 446 bool
466 447
467 config NET_IEEE8021Q_HELPERS <<
468 bool <<
469 <<
470 config NET_SELFTESTS 448 config NET_SELFTESTS
471 def_tristate PHYLIB 449 def_tristate PHYLIB
472 depends on PHYLIB && INET 450 depends on PHYLIB && INET
473 451
474 config NET_SOCK_MSG 452 config NET_SOCK_MSG
475 bool 453 bool
476 default n 454 default n
477 help 455 help
478 The NET_SOCK_MSG provides a framewor 456 The NET_SOCK_MSG provides a framework for plain sockets (e.g. TCP) or
479 ULPs (upper layer modules, e.g. TLS) 457 ULPs (upper layer modules, e.g. TLS) to process L7 application data
480 with the help of BPF programs. 458 with the help of BPF programs.
481 459
482 config NET_DEVLINK 460 config NET_DEVLINK
483 bool 461 bool
484 default n 462 default n
485 463
486 config PAGE_POOL 464 config PAGE_POOL
487 bool 465 bool
488 466
489 config PAGE_POOL_STATS 467 config PAGE_POOL_STATS
490 default n 468 default n
491 bool "Page pool stats" 469 bool "Page pool stats"
492 depends on PAGE_POOL 470 depends on PAGE_POOL
493 help 471 help
494 Enable page pool statistics to track 472 Enable page pool statistics to track page allocation and recycling
495 in page pools. This option incurs ad 473 in page pools. This option incurs additional CPU cost in allocation
496 and recycle paths and additional mem 474 and recycle paths and additional memory cost to store the statistics.
497 These statistics are only available 475 These statistics are only available if this option is enabled and if
498 the driver using the page pool suppo 476 the driver using the page pool supports exporting this data.
499 477
500 If unsure, say N. 478 If unsure, say N.
501 479
502 config FAILOVER 480 config FAILOVER
503 tristate "Generic failover module" 481 tristate "Generic failover module"
504 help 482 help
505 The failover module provides a gener 483 The failover module provides a generic interface for paravirtual
506 drivers to register a netdev and a s 484 drivers to register a netdev and a set of ops with a failover
507 instance. The ops are used as event 485 instance. The ops are used as event handlers that get called to
508 handle netdev register/unregister/li 486 handle netdev register/unregister/link change/name change events
509 on slave pci ethernet devices with t 487 on slave pci ethernet devices with the same mac address as the
510 failover netdev. This enables paravi 488 failover netdev. This enables paravirtual drivers to use a
511 VF as an accelerated low latency dat 489 VF as an accelerated low latency datapath. It also allows live
512 migration of VMs with direct attache 490 migration of VMs with direct attached VFs by failing over to the
513 paravirtual datapath when the VF is 491 paravirtual datapath when the VF is unplugged.
514 492
515 config ETHTOOL_NETLINK 493 config ETHTOOL_NETLINK
516 bool "Netlink interface for ethtool" 494 bool "Netlink interface for ethtool"
517 select DIMLIB <<
518 default y 495 default y
519 help 496 help
520 An alternative userspace interface f 497 An alternative userspace interface for ethtool based on generic
521 netlink. It provides better extensib 498 netlink. It provides better extensibility and some new features,
522 e.g. notification messages. 499 e.g. notification messages.
523 500
524 config NETDEV_ADDR_LIST_TEST 501 config NETDEV_ADDR_LIST_TEST
525 tristate "Unit tests for device addres 502 tristate "Unit tests for device address list"
526 default KUNIT_ALL_TESTS 503 default KUNIT_ALL_TESTS
527 depends on KUNIT 504 depends on KUNIT
528 <<
529 config NET_TEST <<
530 tristate "KUnit tests for networking" <<
531 depends on KUNIT <<
532 default KUNIT_ALL_TESTS <<
533 help <<
534 KUnit tests covering core networking <<
535 <<
536 If unsure, say N. <<
537 505
538 endif # if NET 506 endif # if NET
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