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