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