diff options
Diffstat (limited to 'net/Kconfig')
| -rw-r--r-- | net/Kconfig | 361 |
1 files changed, 272 insertions, 89 deletions
diff --git a/net/Kconfig b/net/Kconfig index 37702491abe9..62266eaf0e95 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # # Network configuration # @@ -6,12 +7,13 @@ menuconfig NET bool "Networking support" select NLATTR select GENERIC_NET_UTILS - ---help--- + select BPF + help Unless you really know what you are doing, you should say Y here. The reason is that some programs need kernel networking support even when running on a stand-alone machine that isn't connected to any other computer. - + If you are upgrading from an older kernel, you should consider updating your networking tools too because changes in the kernel and the tools often go hand in hand. The tools are @@ -44,18 +46,74 @@ config COMPAT_NETLINK_MESSAGES Newly written code should NEVER need this option but do compat-independent messages instead! +config NET_INGRESS + bool + +config NET_EGRESS + bool + +config NET_XGRESS + select NET_INGRESS + select NET_EGRESS + bool + +config NET_REDIRECT + bool + +config SKB_DECRYPTED + bool + +config SKB_EXTENSIONS + bool + +config NET_DEVMEM + def_bool y + select GENERIC_ALLOCATOR + depends on DMA_SHARED_BUFFER + depends on PAGE_POOL + +config NET_SHAPER + bool + +config NET_CRC32C + bool + select CRC32 + menu "Networking options" source "net/packet/Kconfig" +source "net/psp/Kconfig" source "net/unix/Kconfig" +source "net/tls/Kconfig" source "net/xfrm/Kconfig" source "net/iucv/Kconfig" +source "net/smc/Kconfig" +source "drivers/dibs/Kconfig" +source "net/xdp/Kconfig" + +config NET_HANDSHAKE + bool + depends on SUNRPC || NVME_TARGET_TCP || NVME_TCP + default y + +config NET_HANDSHAKE_KUNIT_TEST + tristate "KUnit tests for the handshake upcall mechanism" if !KUNIT_ALL_TESTS + default KUNIT_ALL_TESTS + depends on KUNIT + help + This builds the KUnit tests for the handshake upcall mechanism. + + KUnit tests run during boot and output the results to the debug + log in TAP format (https://testanything.org/). Only useful for + kernel devs running KUnit test harness and are not for inclusion + into a production build. + + For more information on KUnit and unit tests in general, refer + to the KUnit documentation in Documentation/dev-tools/kunit/. config INET bool "TCP/IP networking" - select CRYPTO - select CRYPTO_AES - ---help--- + help These are the protocols used on the Internet and on most local Ethernets. It is highly recommended to say Y here (this will enlarge your kernel by about 400 KB), since some programs (e.g. the X window @@ -71,7 +129,7 @@ config INET "Sysctl support" below, you can change various aspects of the behavior of the TCP/IP code by writing to the (virtual) files in /proc/sys/net/ipv4/*; the options are explained in the file - <file:Documentation/networking/ip-sysctl.txt>. + <file:Documentation/networking/ip-sysctl.rst>. Short answer: say Y. @@ -79,6 +137,7 @@ if INET source "net/ipv4/Kconfig" source "net/ipv6/Kconfig" source "net/netlabel/Kconfig" +source "net/mptcp/Kconfig" endif # if INET @@ -89,18 +148,23 @@ config NETWORK_SECMARK to nfmark, but designated for security purposes. If you are unsure how to answer this question, answer N. +config NET_PTP_CLASSIFY + def_bool n + config NETWORK_PHY_TIMESTAMPING bool "Timestamping in PHY devices" + select NET_PTP_CLASSIFY help - This allows timestamping of network packets by PHYs with - hardware timestamping capabilities. This option adds some - overhead in the transmit and receive paths. + This allows timestamping of network packets by PHYs (or + other MII bus snooping devices) with hardware timestamping + capabilities. This option adds some overhead in the transmit + and receive paths. If you are unsure how to answer this question, answer N. menuconfig NETFILTER bool "Network packet filtering framework (Netfilter)" - ---help--- + help Netfilter is a framework for filtering and mangling network packets that pass through your Linux box. @@ -153,13 +217,6 @@ menuconfig NETFILTER if NETFILTER -config NETFILTER_DEBUG - bool "Network packet filtering debugging" - depends on NETFILTER - help - You can say Y here if you want to get additional messages useful in - debugging the netfilter code. - config NETFILTER_ADVANCED bool "Advanced netfilter configuration" depends on NETFILTER @@ -172,11 +229,13 @@ config NETFILTER_ADVANCED If unsure, say Y. config BRIDGE_NETFILTER - bool "Bridged IP/ARP packets filtering" - depends on BRIDGE && NETFILTER && INET + tristate "Bridged IP/ARP packets filtering" + depends on BRIDGE + depends on NETFILTER && INET depends on NETFILTER_ADVANCED - default y - ---help--- + select NETFILTER_FAMILY_BRIDGE + select SKB_EXTENSIONS + help Enabling this option will let arptables resp. iptables see bridged ARP resp. IP traffic. If you want a bridging firewall, you probably want this option enabled. @@ -188,12 +247,10 @@ config BRIDGE_NETFILTER source "net/netfilter/Kconfig" source "net/ipv4/netfilter/Kconfig" source "net/ipv6/netfilter/Kconfig" -source "net/decnet/netfilter/Kconfig" source "net/bridge/netfilter/Kconfig" -endif +endif # if NETFILTER -source "net/dccp/Kconfig" source "net/sctp/Kconfig" source "net/rds/Kconfig" source "net/tipc/Kconfig" @@ -203,13 +260,12 @@ source "net/802/Kconfig" source "net/bridge/Kconfig" source "net/dsa/Kconfig" source "net/8021q/Kconfig" -source "net/decnet/Kconfig" source "net/llc/Kconfig" -source "net/ipx/Kconfig" -source "drivers/net/appletalk/Kconfig" +source "net/appletalk/Kconfig" source "net/x25/Kconfig" source "net/lapb/Kconfig" source "net/phonet/Kconfig" +source "net/6lowpan/Kconfig" source "net/ieee802154/Kconfig" source "net/mac802154/Kconfig" source "net/sched/Kconfig" @@ -220,56 +276,105 @@ source "net/openvswitch/Kconfig" source "net/vmw_vsock/Kconfig" source "net/netlink/Kconfig" source "net/mpls/Kconfig" +source "net/nsh/Kconfig" +source "net/hsr/Kconfig" +source "net/switchdev/Kconfig" +source "net/l3mdev/Kconfig" +source "net/qrtr/Kconfig" +source "net/ncsi/Kconfig" + +config PCPU_DEV_REFCNT + bool "Use percpu variables to maintain network device refcount" + depends on SMP + default y + help + network device refcount are using per cpu variables if this option is set. + This can be forced to N to detect underflows (with a performance drop). + +config MAX_SKB_FRAGS + int "Maximum number of fragments per skb_shared_info" + range 17 45 + default 17 + help + Having more fragments per skb_shared_info can help GRO efficiency. + This helps BIG TCP workloads, but might expose bugs in some + legacy drivers. + This also increases memory overhead of small packets, + and in drivers using build_skb(). + If unsure, say 17. config RPS - boolean - depends on SMP && SYSFS && USE_GENERIC_SMP_HELPERS + bool "Receive packet steering" + depends on SMP && SYSFS default y + help + Software receive side packet steering (RPS) distributes the + load of received packet processing across multiple CPUs. config RFS_ACCEL - boolean - depends on RPS && GENERIC_HARDIRQS + bool "Hardware acceleration of RFS" + depends on RPS select CPU_RMAP default y + help + Allowing drivers for multiqueue hardware with flow filter tables to + accelerate RFS. + +config SOCK_RX_QUEUE_MAPPING + bool config XPS - boolean - depends on SMP && USE_GENERIC_SMP_HELPERS + bool + depends on SMP + select SOCK_RX_QUEUE_MAPPING default y -config NETPRIO_CGROUP - tristate "Network priority cgroup" +config HWBM + bool + +config CGROUP_NET_PRIO + bool "Network priority cgroup" depends on CGROUPS - ---help--- + select SOCK_CGROUP_DATA + help Cgroup subsystem for use in assigning processes to network priorities on - a per-interface basis + a per-interface basis. -config NET_LL_RX_POLL - boolean - default y +config CGROUP_NET_CLASSID + bool "Network classid cgroup" + depends on CGROUPS + select SOCK_CGROUP_DATA + help + Cgroup subsystem for use as general purpose socket classid marker that is + being used in cls_cgroup and for netfilter matching. + +config NET_RX_BUSY_POLL + bool + default y if !PREEMPT_RT || (PREEMPT_RT && !NETCONSOLE) config BQL - boolean + bool + prompt "Enable Byte Queue Limits" depends on SYSFS select DQL default y -config BPF_JIT - bool "enable BPF Just In Time compiler" - depends on HAVE_BPF_JIT - depends on MODULES - ---help--- - Berkeley Packet Filter filtering capabilities are normally handled - by an interpreter. This option allows kernel to generate a native - code when filter is loaded in memory. This should speedup - packet sniffing (libpcap/tcpdump). Note : Admin should enable - this feature changing /proc/sys/net/core/bpf_jit_enable +config BPF_STREAM_PARSER + bool "enable BPF STREAM_PARSER" + depends on INET + depends on BPF_SYSCALL + depends on CGROUP_BPF + select STREAM_PARSER + select NET_SOCK_MSG + help + Enabling this allows a TCP stream parser to be used with + BPF_MAP_TYPE_SOCKMAP. config NET_FLOW_LIMIT - boolean + bool "Net flow limit" depends on RPS default y - ---help--- + help The network stack has to drop packets when a receive processing CPU's backlog reaches netdev_max_backlog. If a few out of many active flows generate the vast majority of load, drop their traffic earlier to @@ -281,56 +386,41 @@ menu "Network testing" config NET_PKTGEN tristate "Packet Generator (USE WITH CAUTION)" - depends on PROC_FS - ---help--- + depends on INET && PROC_FS + help This module will inject preconfigured packets, at a configurable rate, out of a given interface. It is used for network interface stress testing and performance analysis. If you don't understand what was just said, you don't need it: say N. Documentation on how to use the packet generator can be found - at <file:Documentation/networking/pktgen.txt>. + at <file:Documentation/networking/pktgen.rst>. To compile this code as a module, choose M here: the module will be called pktgen. -config NET_TCPPROBE - tristate "TCP connection probing" - depends on INET && PROC_FS && KPROBES - ---help--- - This module allows for capturing the changes to TCP connection - state in response to incoming packets. It is used for debugging - TCP congestion avoidance modules. If you don't understand - what was just said, you don't need it: say N. - - Documentation on how to use TCP connection probing can be found - at: - - http://www.linuxfoundation.org/collaborate/workgroups/networking/tcpprobe - - To compile this code as a module, choose M here: the - module will be called tcp_probe. - config NET_DROP_MONITOR - tristate "Network packet drop alerting service" + tristate "Legacy network packet drop alerting service" depends on INET && TRACEPOINTS - ---help--- - This feature provides an alerting service to userspace in the - event that packets are discarded in the network stack. Alerts - are broadcast via netlink socket to any listening user space - process. If you don't need network drop alerts, or if you are ok - just checking the various proc files and other utilities for - drop statistics, say N here. + help + This feature provides an alerting service to userspace in the + event that packets are discarded in the network stack. Alerts + are broadcast via netlink socket to any listening user space + process. This feature is NOT related to "perf" based drop monitoring. + Say N here unless you need to support older userspace tools like + "dropwatch". -endmenu +endmenu # Network testing -endmenu +endmenu # Networking options source "net/ax25/Kconfig" source "net/can/Kconfig" -source "net/irda/Kconfig" source "net/bluetooth/Kconfig" source "net/rxrpc/Kconfig" +source "net/kcm/Kconfig" +source "net/strparser/Kconfig" +source "net/mctp/Kconfig" config FIB_RULES bool @@ -347,17 +437,110 @@ source "net/mac80211/Kconfig" endif # WIRELESS -source "net/wimax/Kconfig" - source "net/rfkill/Kconfig" source "net/9p/Kconfig" source "net/caif/Kconfig" source "net/ceph/Kconfig" source "net/nfc/Kconfig" +source "net/psample/Kconfig" +source "net/ife/Kconfig" +config LWTUNNEL + bool "Network light weight tunnels" + help + This feature provides an infrastructure to support light weight + tunnels like mpls. There is no netdevice associated with a light + weight tunnel endpoint. Tunnel encapsulation parameters are stored + with light weight tunnel state associated with fib routes. + +config LWTUNNEL_BPF + bool "Execute BPF program as route nexthop action" + depends on LWTUNNEL && INET + default y if LWTUNNEL=y + help + Allows to run BPF programs as a nexthop action following a route + lookup for incoming and outgoing packets. -endif # if NET +config DST_CACHE + bool + default n -# Used by archs to tell that they support BPF_JIT -config HAVE_BPF_JIT +config GRO_CELLS bool + default n + +config SOCK_VALIDATE_XMIT + bool + +config NET_IEEE8021Q_HELPERS + bool + +config NET_SELFTESTS + def_tristate PHYLIB + depends on PHYLIB && INET + +config NET_SOCK_MSG + bool + default n + help + The NET_SOCK_MSG provides a framework for plain sockets (e.g. TCP) or + ULPs (upper layer modules, e.g. TLS) to process L7 application data + with the help of BPF programs. + +config NET_DEVLINK + bool + default n + +config PAGE_POOL + bool + +config PAGE_POOL_STATS + default n + bool "Page pool stats" + depends on PAGE_POOL + help + Enable page pool statistics to track page allocation and recycling + in page pools. This option incurs additional CPU cost in allocation + and recycle paths and additional memory cost to store the statistics. + These statistics are only available if this option is enabled and if + the driver using the page pool supports exporting this data. + + If unsure, say N. + +config FAILOVER + tristate "Generic failover module" + help + The failover module provides a generic interface for paravirtual + drivers to register a netdev and a set of ops with a failover + instance. The ops are used as event handlers that get called to + handle netdev register/unregister/link change/name change events + on slave pci ethernet devices with the same mac address as the + failover netdev. This enables paravirtual drivers to use a + VF as an accelerated low latency datapath. It also allows live + migration of VMs with direct attached VFs by failing over to the + paravirtual datapath when the VF is unplugged. + +config ETHTOOL_NETLINK + bool "Netlink interface for ethtool" + select DIMLIB + default y + help + An alternative userspace interface for ethtool based on generic + netlink. It provides better extensibility and some new features, + e.g. notification messages. + +config NETDEV_ADDR_LIST_TEST + tristate "Unit tests for device address list" + default KUNIT_ALL_TESTS + depends on KUNIT + +config NET_TEST + tristate "KUnit tests for networking" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + help + KUnit tests covering core networking infra, such as sk_buff. + + If unsure, say N. + +endif # if NET |