git: e80699a809a0 - main - netlink: add NETLINK to GENERIC.

The branch main has been updated by melifaro:

URL: https://cgit.FreeBSD.org/src/commit/?id=e80699a809a079c4e673940544d6ddd944e8d08e

commit e80699a809a079c4e673940544d6ddd944e8d08e
Author:     Alexander V. Chernikov <melifaro@FreeBSD.org>
AuthorDate: 2023-01-31 14:22:11 +0000
Commit:     Alexander V. Chernikov <melifaro@FreeBSD.org>
CommitDate: 2023-01-31 14:22:11 +0000

    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
---
 sys/arm/conf/std.armv7     | 1 +
 sys/arm64/conf/std.arm64   | 1 +
 sys/i386/conf/GENERIC      | 1 +
 sys/powerpc/conf/GENERIC64 | 1 +
 sys/riscv/conf/GENERIC     | 1 +
 5 files changed, 5 insertions(+)

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