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| author | Alexander V. Chernikov <melifaro@FreeBSD.org> | 2023-01-31 14:22:11 +0000 |
|---|---|---|
| committer | Alexander V. Chernikov <melifaro@FreeBSD.org> | 2023-01-31 14:22:11 +0000 |
| commit | e80699a809a079c4e673940544d6ddd944e8d08e (patch) | |
| tree | 0ec9651ad94814c4930b7a23a9c72f5438bb951c | |
| parent | a3baca22d0b7789a040a60f389e3c132b6e1755b (diff) | |
| download | src-e80699a809.tar.gz src-e80699a809.zip | |
netlink: add NETLINK to GENERIC.
This is a followup of 692e19cf5195 (add netlink to GENERIC@amd64).
Netlink is a communication protocol defined in RFC 3549. It is async,
TLV-based protocol, providing 1-1 and 1-many communications between kernel
and userland. Netlink is currently used in Linux kernel to modify, read and
subscribe for nearly all networking states. Interface state, addresses, routes,
firewall, rules, fibs, etc, are controlled via Netlink.
Netlink support was added in D36002. It has got a number of improvements and
first customers since then:
* net/bird2 got netlink support, enabling route multipath in FreeBSD
* netlink-based devd notifications are being worked on ( D37574 ).
* linux(4) fully supports and depends on Netlink
Enabling Netlink in GENERIC targets two goals.
The first one is to provide stability for the third-party userland applications,
so they can rely on the fact that netlink always exists since 14.0 and potentially 13.2.
Loadable module makes life of the app delepers harder. For example, `net/bird2` can be
either build with netlink or rtsock support, but not both.
The second goal is to enable gradual conversion of the base userland tools
to use netlink(4) interfaces. Converting tools like netstat (D36529), route,
ifconfig one-by-one simplifies testing and addressing the feedback.
Othewise, switching all base to use netlink at once may be too big of a leap.
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D37783
| -rw-r--r-- | sys/arm/conf/std.armv7 | 1 | ||||
| -rw-r--r-- | sys/arm64/conf/std.arm64 | 1 | ||||
| -rw-r--r-- | sys/i386/conf/GENERIC | 1 | ||||
| -rw-r--r-- | sys/powerpc/conf/GENERIC64 | 1 | ||||
| -rw-r--r-- | sys/riscv/conf/GENERIC | 1 |
5 files changed, 5 insertions, 0 deletions
diff --git a/sys/arm/conf/std.armv7 b/sys/arm/conf/std.armv7 index 8ace5c01eeab..03cc0ae5a2b8 100644 --- a/sys/arm/conf/std.armv7 +++ b/sys/arm/conf/std.armv7 @@ -11,6 +11,7 @@ options CC_CUBIC # include CUBIC congestion control options TCP_HHOOK # hhook(9) framework for TCP device crypto # core crypto support options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5 +options NETLINK # netlink(4) support options SCTP_SUPPORT # Allow kldload of SCTP options FFS # Berkeley Fast Filesystem options SOFTUPDATES # Enable FFS soft updates support diff --git a/sys/arm64/conf/std.arm64 b/sys/arm64/conf/std.arm64 index 6480ca6530e4..1e664a3ba90c 100644 --- a/sys/arm64/conf/std.arm64 +++ b/sys/arm64/conf/std.arm64 @@ -13,6 +13,7 @@ options INET # InterNETworking options INET6 # IPv6 communications protocols options CC_CUBIC # include CUBIC congestion control options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5 +options NETLINK # netlink(4) support options ROUTE_MPATH # Multipath routing support options FIB_ALGO # Modular fib lookups options TCP_OFFLOAD # TCP offload diff --git a/sys/i386/conf/GENERIC b/sys/i386/conf/GENERIC index 235713851016..5d30f2877c1c 100644 --- a/sys/i386/conf/GENERIC +++ b/sys/i386/conf/GENERIC @@ -32,6 +32,7 @@ options VIMAGE # Subsystem virtualization, e.g. VNET options INET # InterNETworking options INET6 # IPv6 communications protocols options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5 +options NETLINK # netlink(4) support options ROUTE_MPATH # Multipath routing support options TCP_HHOOK # hhook(9) framework for TCP options TCP_OFFLOAD # TCP offload diff --git a/sys/powerpc/conf/GENERIC64 b/sys/powerpc/conf/GENERIC64 index bfd0cf342d95..37a78446f07a 100644 --- a/sys/powerpc/conf/GENERIC64 +++ b/sys/powerpc/conf/GENERIC64 @@ -42,6 +42,7 @@ options VIMAGE # Subsystem virtualization, e.g. VNET options INET # InterNETworking options INET6 # IPv6 communications protocols options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5 +options NETLINK # netlink(4) support options ROUTE_MPATH # Multipath routing support options TCP_OFFLOAD # TCP offload options TCP_BLACKBOX # Enhanced TCP event logging diff --git a/sys/riscv/conf/GENERIC b/sys/riscv/conf/GENERIC index 2e35a49825d4..69c36511da80 100644 --- a/sys/riscv/conf/GENERIC +++ b/sys/riscv/conf/GENERIC @@ -31,6 +31,7 @@ options INET # InterNETworking options INET6 # IPv6 communications protocols options TCP_HHOOK # hhook(9) framework for TCP options IPSEC_SUPPORT # Allow kldload of ipsec and tcpmd5 +options NETLINK # netlink(4) support options ROUTE_MPATH # Multipath routing support options TCP_OFFLOAD # TCP offload options TCP_BLACKBOX # Enhanced TCP event logging |