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