Merge branch 'ipv6-more-data-race-annotations'

Eric Dumazet says:

====================
ipv6: more data-race annotations

Inspired by one unrelated syzbot report.

This series adds missing (and boring) data-race annotations in IPv6.

Only the first patch adds sysctl_ipv6_flowlabel group
to speedup ip6_make_flowlabel() a bit.
====================

Link: https://patch.msgid.link/20260115094141.3124990-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>