summaryrefslogtreecommitdiffstats
path: root/arch/s390
AgeCommit message (Expand)Author
2018-11-05compiler: remove __no_sanitize_address_or_inline againMartin Schwidefsky
2018-10-31mm: remove include/linux/bootmem.hMike Rapoport
2018-10-31memblock: rename free_all_bootmem to memblock_free_allMike Rapoport
2018-10-31memblock: remove _virt from APIs returning virtual addressMike Rapoport
2018-10-31memblock: rename memblock_alloc{_nid,_try_nid} to memblock_phys_alloc*Mike Rapoport
2018-10-31mm: remove CONFIG_HAVE_MEMBLOCKMike Rapoport
2018-10-31mm: remove CONFIG_NO_BOOTMEMMike Rapoport
2018-10-31treewide: remove current_text_addrNick Desaulniers
2018-10-26sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOADJohannes Weiner
2018-10-25Merge tag 'kvm-4.20-1' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
2018-10-25Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert...Linus Torvalds
2018-10-25Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/ke...Linus Torvalds
2018-10-24Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...Linus Torvalds
2018-10-23Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/k...Linus Torvalds
2018-10-23Merge tag 's390-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390...Linus Torvalds
2018-10-22s390/kasan: support preemptible kernel buildVasily Gorbik
2018-10-19s390/perf: Return error when debug_register failsThomas Richter
2018-10-15s390/sthyi: Fix machine name validity indicationJanosch Frank
2018-10-13Merge tag 'kvm-s390-next-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel...Paolo Bonzini
2018-10-11s390/vmalloc: fix VMALLOC_START calculationMikhail Zaslonko
2018-10-10Merge tag 's390-4.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390...Greg Kroah-Hartman
2018-10-10s390/mem_detect: add missing includeHeiko Carstens
2018-10-10s390/dumpstack: print psw mask and address againHeiko Carstens
2018-10-10s390/crypto: Enhance paes cipher to accept variable length key materialIngo Franzki
2018-10-10s390/pkey: Introduce new API for transforming key blobsIngo Franzki
2018-10-10s390/pkey: Introduce new API for random protected key verificationIngo Franzki
2018-10-09s390/pkey: Introduce new API for random protected key generationIngo Franzki
2018-10-09s390/zcrypt: zcrypt device driver cleanupHarald Freudenberger
2018-10-09s390/kasan: add support for mem= kernel parameterVasily Gorbik
2018-10-09s390/kasan: optimize kasan vmemmap allocationVasily Gorbik
2018-10-09s390/kasan: avoid kasan crash with standby memory definedVasily Gorbik
2018-10-09s390/head: avoid doubling early boot stack size under KASANVasily Gorbik
2018-10-09s390/mm: improve debugfs ptdump markers walkingVasily Gorbik
2018-10-09s390/mm: optimize debugfs ptdump kasan zero page walkingVasily Gorbik
2018-10-09s390/kasan: add option for 4-level paging supportVasily Gorbik
2018-10-09s390/kasan: free early identity mapping structuresVasily Gorbik
2018-10-09s390/kasan: enable stack and global variables access checksVasily Gorbik
2018-10-09s390/dumpstack: disable __dump_trace kasan instrumentationVasily Gorbik
2018-10-09s390/kasan: reipl and kexec supportVasily Gorbik
2018-10-09s390/smp: kasan stack instrumentation supportVasily Gorbik
2018-10-09s390/kasan: use noexec and large pagesVasily Gorbik
2018-10-09s390/kasan: dynamic shadow mem allocation for modulesVasily Gorbik
2018-10-09s390/mm: add kasan shadow to the debugfs pgtable dumpVasily Gorbik
2018-10-09s390/kasan: avoid user access code instrumentationVasily Gorbik
2018-10-09s390/kasan: double the stack sizeVasily Gorbik
2018-10-09s390/kasan: add initialization code and enable itVasily Gorbik
2018-10-09s390: add pgd_page primitiveVasily Gorbik
2018-10-09s390: introduce MAX_PTRS_PER_P4DVasily Gorbik
2018-10-09s390/kasan: replace some memory functionsVasily Gorbik
2018-10-09s390/kasan: avoid instrumentation of early C codeVasily Gorbik
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-10 09:47:26 +0000
374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 
# SPDX-License-Identifier: GPL-2.0-only
#
# IP configuration
#
config IP_MULTICAST
	bool "IP: multicasting"
	help
	  This is code for addressing several networked computers at once,
	  enlarging your kernel by about 2 KB. You need multicasting if you
	  intend to participate in the MBONE, a high bandwidth network on top
	  of the Internet which carries audio and video broadcasts. More
	  information about the MBONE is on the WWW at
	  <https://www.savetz.com/mbone/>. For most people, it's safe to say N.

config IP_ADVANCED_ROUTER
	bool "IP: advanced router"
	help
	  If you intend to run your Linux box mostly as a router, i.e. as a
	  computer that forwards and redistributes network packets, say Y; you
	  will then be presented with several options that allow more precise
	  control about the routing process.

	  The answer to this question won't directly affect the kernel:
	  answering N will just cause the configurator to skip all the
	  questions about advanced routing.

	  Note that your box can only act as a router if you enable IP
	  forwarding in your kernel; you can do that by saying Y to "/proc
	  file system support" and "Sysctl support" below and executing the
	  line

	  echo "1" > /proc/sys/net/ipv4/ip_forward

	  at boot time after the /proc file system has been mounted.

	  If you turn on IP forwarding, you should consider the rp_filter, which
	  automatically rejects incoming packets if the routing table entry
	  for their source address doesn't match the network interface they're
	  arriving on. This has security advantages because it prevents the
	  so-called IP spoofing, however it can pose problems if you use
	  asymmetric routing (packets from you to a host take a different path
	  than packets from that host to you) or if you operate a non-routing
	  host which has several IP addresses on different interfaces. To turn
	  rp_filter on use:

	  echo 1 > /proc/sys/net/ipv4/conf/<device>/rp_filter
	   or
	  echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter

	  Note that some distributions enable it in startup scripts.
	  For details about rp_filter strict and loose mode read
	  <file:Documentation/networking/ip-sysctl.rst>.

	  If unsure, say N here.

config IP_FIB_TRIE_STATS
	bool "FIB TRIE statistics"
	depends on IP_ADVANCED_ROUTER
	help
	  Keep track of statistics on structure of FIB TRIE table.
	  Useful for testing and measuring TRIE performance.

config IP_MULTIPLE_TABLES
	bool "IP: policy routing"
	depends on IP_ADVANCED_ROUTER
	select FIB_RULES
	help
	  Normally, a router decides what to do with a received packet based
	  solely on the packet's final destination address. If you say Y here,
	  the Linux router will also be able to take the packet's source
	  address into account. Furthermore, the TOS (Type-Of-Service) field
	  of the packet can be used for routing decisions as well.

	  If you need more information, see the Linux Advanced
	  Routing and Traffic Control documentation at
	  <https://lartc.org/howto/lartc.rpdb.html>

	  If unsure, say N.

config IP_ROUTE_MULTIPATH
	bool "IP: equal cost multipath"
	depends on IP_ADVANCED_ROUTER
	help
	  Normally, the routing tables specify a single action to be taken in
	  a deterministic manner for a given packet. If you say Y here
	  however, it becomes possible to attach several actions to a packet
	  pattern, in effect specifying several alternative paths to travel
	  for those packets. The router considers all these paths to be of
	  equal "cost" and chooses one of them in a non-deterministic fashion
	  if a matching packet arrives.

config IP_ROUTE_VERBOSE
	bool "IP: verbose route monitoring"
	depends on IP_ADVANCED_ROUTER
	help
	  If you say Y here, which is recommended, then the kernel will print
	  verbose messages regarding the routing, for example warnings about
	  received packets which look strange and could be evidence of an
	  attack or a misconfigured system somewhere. The information is
	  handled by the klogd daemon which is responsible for kernel messages
	  ("man klogd").

config IP_ROUTE_CLASSID
	bool

config IP_PNP
	bool "IP: kernel level autoconfiguration"
	help
	  This enables automatic configuration of IP addresses of devices and
	  of the routing table during kernel boot, based on either information
	  supplied on the kernel command line or by BOOTP or RARP protocols.
	  You need to say Y only for diskless machines requiring network
	  access to boot (in which case you want to say Y to "Root file system
	  on NFS" as well), because all other machines configure the network
	  in their startup scripts.

config IP_PNP_DHCP
	bool "IP: DHCP support"
	depends on IP_PNP
	help
	  If you want your Linux box to mount its whole root file system (the
	  one containing the directory /) from some other computer over the
	  net via NFS and you want the IP address of your computer to be
	  discovered automatically at boot time using the DHCP protocol (a
	  special protocol designed for doing this job), say Y here. In case
	  the boot ROM of your network card was designed for booting Linux and
	  does DHCP itself, providing all necessary information on the kernel
	  command line, you can say N here.

	  If unsure, say Y. Note that if you want to use DHCP, a DHCP server
	  must be operating on your network.  Read
	  <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.

config IP_PNP_BOOTP
	bool "IP: BOOTP support"
	depends on IP_PNP
	help
	  If you want your Linux box to mount its whole root file system (the
	  one containing the directory /) from some other computer over the
	  net via NFS and you want the IP address of your computer to be
	  discovered automatically at boot time using the BOOTP protocol (a
	  special protocol designed for doing this job), say Y here. In case
	  the boot ROM of your network card was designed for booting Linux and
	  does BOOTP itself, providing all necessary information on the kernel
	  command line, you can say N here. If unsure, say Y. Note that if you
	  want to use BOOTP, a BOOTP server must be operating on your network.
	  Read <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.

config IP_PNP_RARP
	bool "IP: RARP support"
	depends on IP_PNP
	help
	  If you want your Linux box to mount its whole root file system (the
	  one containing the directory /) from some other computer over the
	  net via NFS and you want the IP address of your computer to be
	  discovered automatically at boot time using the RARP protocol (an
	  older protocol which is being obsoleted by BOOTP and DHCP), say Y
	  here. Note that if you want to use RARP, a RARP server must be
	  operating on your network. Read
	  <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.

config NET_IPIP
	tristate "IP: tunneling"
	select INET_TUNNEL
	select NET_IP_TUNNEL
	help
	  Tunneling means encapsulating data of one protocol type within
	  another protocol and sending it over a channel that understands the
	  encapsulating protocol. This particular tunneling driver implements
	  encapsulation of IP within IP, which sounds kind of pointless, but
	  can be useful if you want to make your (or some other) machine
	  appear on a different network than it physically is, or to use
	  mobile-IP facilities (allowing laptops to seamlessly move between
	  networks without changing their IP addresses).

	  Saying Y to this option will produce two modules ( = code which can
	  be inserted in and removed from the running kernel whenever you
	  want). Most people won't need this and can say N.

config NET_IPGRE_DEMUX
	tristate "IP: GRE demultiplexer"
	help
	  This is helper module to demultiplex GRE packets on GRE version field criteria.
	  Required by ip_gre and pptp modules.

config NET_IP_TUNNEL
	tristate
	select DST_CACHE
	select GRO_CELLS
	default n

config NET_IPGRE
	tristate "IP: GRE tunnels over IP"
	depends on (IPV6 || IPV6=n) && NET_IPGRE_DEMUX
	select NET_IP_TUNNEL
	help
	  Tunneling means encapsulating data of one protocol type within
	  another protocol and sending it over a channel that understands the
	  encapsulating protocol. This particular tunneling driver implements
	  GRE (Generic Routing Encapsulation) and at this time allows
	  encapsulating of IPv4 or IPv6 over existing IPv4 infrastructure.
	  This driver is useful if the other endpoint is a Cisco router: Cisco
	  likes GRE much better than the other Linux tunneling driver ("IP
	  tunneling" above). In addition, GRE allows multicast redistribution
	  through the tunnel.

config NET_IPGRE_BROADCAST
	bool "IP: broadcast GRE over IP"
	depends on IP_MULTICAST && NET_IPGRE
	help
	  One application of GRE/IP is to construct a broadcast WAN (Wide Area
	  Network), which looks like a normal Ethernet LAN (Local Area
	  Network), but can be distributed all over the Internet. If you want
	  to do that, say Y here and to "IP multicast routing" below.

config IP_MROUTE_COMMON
	bool
	depends on IP_MROUTE || IPV6_MROUTE

config IP_MROUTE
	bool "IP: multicast routing"
	depends on IP_MULTICAST
	select IP_MROUTE_COMMON
	help
	  This is used if you want your machine to act as a router for IP
	  packets that have several destination addresses. It is needed on the
	  MBONE, a high bandwidth network on top of the Internet which carries
	  audio and video broadcasts. In order to do that, you would most
	  likely run the program mrouted. If you haven't heard about it, you
	  don't need it.

config IP_MROUTE_MULTIPLE_TABLES
	bool "IP: multicast policy routing"
	depends on IP_MROUTE && IP_ADVANCED_ROUTER
	select FIB_RULES
	help
	  Normally, a multicast router runs a userspace daemon and decides
	  what to do with a multicast packet based on the source and
	  destination addresses. If you say Y here, the multicast router
	  will also be able to take interfaces and packet marks into
	  account and run multiple instances of userspace daemons
	  simultaneously, each one handling a single table.

	  If unsure, say N.

config IP_PIMSM_V1
	bool "IP: PIM-SM version 1 support"
	depends on IP_MROUTE
	help
	  Kernel side support for Sparse Mode PIM (Protocol Independent
	  Multicast) version 1. This multicast routing protocol is used widely
	  because Cisco supports it. You need special software to use it
	  (pimd-v1). Please see <http://netweb.usc.edu/pim/> for more
	  information about PIM.

	  Say Y if you want to use PIM-SM v1. Note that you can say N here if
	  you just want to use Dense Mode PIM.

config IP_PIMSM_V2
	bool "IP: PIM-SM version 2 support"
	depends on IP_MROUTE
	help
	  Kernel side support for Sparse Mode PIM version 2. In order to use
	  this, you need an experimental routing daemon supporting it (pimd or
	  gated-5). This routing protocol is not used widely, so say N unless
	  you want to play with it.

config SYN_COOKIES
	bool "IP: TCP syncookie support"
	help
	  Normal TCP/IP networking is open to an attack known as "SYN
	  flooding". This denial-of-service attack prevents legitimate remote
	  users from being able to connect to your computer during an ongoing
	  attack and requires very little work from the attacker, who can
	  operate from anywhere on the Internet.

	  SYN cookies provide protection against this type of attack. If you
	  say Y here, the TCP/IP stack will use a cryptographic challenge
	  protocol known as "SYN cookies" to enable legitimate users to
	  continue to connect, even when your machine is under attack. There
	  is no need for the legitimate users to change their TCP/IP software;
	  SYN cookies work transparently to them. For technical information
	  about SYN cookies, check out <https://cr.yp.to/syncookies.html>.

	  If you are SYN flooded, the source address reported by the kernel is
	  likely to have been forged by the attacker; it is only reported as
	  an aid in tracing the packets to their actual source and should not
	  be taken as absolute truth.

	  SYN cookies may prevent correct error reporting on clients when the
	  server is really overloaded. If this happens frequently better turn
	  them off.

	  If you say Y here, you can disable SYN cookies at run time by
	  saying Y to "/proc file system support" and
	  "Sysctl support" below and executing the command

	  echo 0 > /proc/sys/net/ipv4/tcp_syncookies

	  after the /proc file system has been mounted.

	  If unsure, say N.

config NET_IPVTI
	tristate "Virtual (secure) IP: tunneling"
	depends on IPV6 || IPV6=n
	select INET_TUNNEL
	select NET_IP_TUNNEL
	select XFRM
	help
	  Tunneling means encapsulating data of one protocol type within
	  another protocol and sending it over a channel that understands the
	  encapsulating protocol. This can be used with xfrm mode tunnel to give
	  the notion of a secure tunnel for IPSEC and then use routing protocol
	  on top.

config NET_UDP_TUNNEL
	tristate
	select NET_IP_TUNNEL
	default n

config NET_FOU
	tristate "IP: Foo (IP protocols) over UDP"
	select XFRM
	select NET_UDP_TUNNEL
	help
	  Foo over UDP allows any IP protocol to be directly encapsulated
	  over UDP include tunnels (IPIP, GRE, SIT). By encapsulating in UDP
	  network mechanisms and optimizations for UDP (such as ECMP
	  and RSS) can be leveraged to provide better service.

config NET_FOU_IP_TUNNELS
	bool "IP: FOU encapsulation of IP tunnels"
	depends on NET_IPIP || NET_IPGRE || IPV6_SIT
	select NET_FOU
	help
	  Allow configuration of FOU or GUE encapsulation for IP tunnels.
	  When this option is enabled IP tunnels can be configured to use
	  FOU or GUE encapsulation.

config INET_AH
	tristate "IP: AH transformation"
	select XFRM_AH
	help
	  Support for IPsec AH (Authentication Header).

	  AH can be used with various authentication algorithms.  Besides
	  enabling AH support itself, this option enables the generic
	  implementations of the algorithms that RFC 8221 lists as MUST be
	  implemented.  If you need any other algorithms, you'll need to enable
	  them in the crypto API.  You should also enable accelerated
	  implementations of any needed algorithms when available.

	  If unsure, say Y.

config INET_ESP
	tristate "IP: ESP transformation"
	select XFRM_ESP
	help
	  Support for IPsec ESP (Encapsulating Security Payload).

	  ESP can be used with various encryption and authentication algorithms.
	  Besides enabling ESP support itself, this option enables the generic
	  implementations of the algorithms that RFC 8221 lists as MUST be
	  implemented.  If you need any other algorithms, you'll need to enable
	  them in the crypto API.  You should also enable accelerated
	  implementations of any needed algorithms when available.

	  If unsure, say Y.

config INET_ESP_OFFLOAD
	tristate "IP: ESP transformation offload"
	depends on INET_ESP
	select XFRM_OFFLOAD
	default n
	help
	  Support for ESP transformation offload. This makes sense
	  only if this system really does IPsec and want to do it
	  with high throughput. A typical desktop system does not
	  need it, even if it does IPsec.

	  If unsure, say N.

config INET_ESPINTCP
	bool "IP: ESP in TCP encapsulation (RFC 8229)"
	depends on XFRM && INET_ESP
	select STREAM_PARSER
	select NET_SOCK_MSG
	select XFRM_ESPINTCP
	help
	  Support for RFC 8229 encapsulation of ESP and IKE over
	  TCP/IPv4 sockets.

	  If unsure, say N.

config INET_IPCOMP
	tristate "IP: IPComp transformation"
	select INET_XFRM_TUNNEL
	select XFRM_IPCOMP
	help
	  Support for IP Payload Compression Protocol (IPComp) (RFC3173),
	  typically needed for IPsec.

	  If unsure, say Y.

config INET_XFRM_TUNNEL
	tristate
	select INET_TUNNEL
	default n

config INET_TUNNEL
	tristate
	default n

config INET_DIAG
	tristate "INET: socket monitoring interface"
	default y
	help
	  Support for INET (TCP, DCCP, etc) socket monitoring interface used by
	  native Linux tools such as ss. ss is included in iproute2, currently
	  downloadable at:

	    http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2

	  If unsure, say Y.

config INET_TCP_DIAG
	depends on INET_DIAG
	def_tristate INET_DIAG

config INET_UDP_DIAG
	tristate "UDP: socket monitoring interface"
	depend