Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Merge tag 'for-netdev' of https://git./linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2024-05-13

We've added 3 non-merge commits during the last 2 day(s) which contain
a total of 2 files changed, 62 insertions(+), 8 deletions(-).

The main changes are:

1) Fix a case where syzkaller found that it's unexpectedly possible
   to attach a cgroup_skb program to the sockopt hooks. The fix adds
   missing attach_type enforcement for the link_create case along
   with selftests, from Stanislav Fomichev.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  selftests/bpf: Add sockopt case to verify prog_type
  selftests/bpf: Extend sockopt tests to use BPF_LINK_CREATE
  bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE
====================

Link: https://lore.kernel.org/r/20240513041845.31040-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>