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