freebsd-src.git/lib/libsysdecode/netlink.c, branch main FreeBSD sources truss: add support for decoding Netlink messages 2026-04-03T06:52:29+00:00 Ishan Agrawal iagrawal9990@gmail.com 2026-01-06T12:05:59+00:00 8ef0093f297af7c917037f058af9813105e67662 Netlink usage is growing in FreeBSD. This patch adds support to `truss(1)` to decode Netlink headers in sendmsg/recvmsg calls, making debugging network configuration tools significantly easier. Changes: libsysdecode: Add `sysdecode_netlink()` to parse struct `nlmsghdr`. truss: Detect `AF_NETLINK` sockets and decode the message payload. Reviewed by: kp Signed-off-by: Ishan Agrawal <iagrawal9990@gmail.com> Github PR: https://github.com/freebsd/freebsd-src/pull/1950 
Netlink usage is growing in FreeBSD. This patch adds support to
`truss(1)` to decode Netlink headers in sendmsg/recvmsg calls, making
debugging network configuration tools significantly easier.

Changes:

libsysdecode: Add `sysdecode_netlink()` to parse struct `nlmsghdr`.
truss: Detect `AF_NETLINK` sockets and decode the message payload.

Reviewed by:	kp
Signed-off-by:	Ishan Agrawal <iagrawal9990@gmail.com>
Github PR:	https://github.com/freebsd/freebsd-src/pull/1950