CVS commit: src/sys

Module Name:	src
Committed By:	riastradh
Date:		Sat Jul  4 22:22:33 UTC 2026

Modified Files:
	src/sys/net: if_wg.c
	src/sys/rump/net/lib/libwg: wg_user.c wg_user.h

Log Message:
wg-userspace(8): Tighten rump interface.

1. Don't abuse struct iov as a tuple of two buffers, one of which is
   conveying a sockaddr; just pass two separate arguments, one for the
   sockaddr and the other for the payload.

2. Avoid sketchy struct sockaddr * scabs; we're a union shop here.

It might seem like a regression to rip out all the scatter/gather
iovecs and require contiguous buffers.  But on the input path we
already have a contiguous buffer filled by read(2) or recvfrom(2)
(and there would be no advantage to using readv(v)).  And on the
output path, we always generate handshake messages and ciphertext in
contiguous buffers anyway.  So no scatter/gather support is actually
lost here.

Cleanup prompted by:

PR bin/60392: assertion "mbuflen >= sizeof(struct wg_msg)" failed


To generate a diff of this commit:
cvs rdiff -u -r1.141 -r1.142 src/sys/net/if_wg.c
cvs rdiff -u -r1.4 -r1.5 src/sys/rump/net/lib/libwg/wg_user.c
cvs rdiff -u -r1.1 -r1.2 src/sys/rump/net/lib/libwg/wg_user.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.