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

Daniel Borkmann says:

====================
pull-request: bpf 2023-11-21

We've added 19 non-merge commits during the last 4 day(s) which contain
a total of 18 files changed, 1043 insertions(+), 416 deletions(-).

The main changes are:

1) Fix BPF verifier to validate callbacks as if they are called an unknown
   number of times in order to fix not detecting some unsafe programs,
   from Eduard Zingerman.

2) Fix bpf_redirect_peer() handling which missed proper stats accounting
   for veth and netkit and also generally fix missing stats for the latter,
   from Peilin Ye, Daniel Borkmann et al.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  selftests/bpf: check if max number of bpf_loop iterations is tracked
  bpf: keep track of max number of bpf_loop callback iterations
  selftests/bpf: test widening for iterating callbacks
  bpf: widening for callback iterators
  selftests/bpf: tests for iterating callbacks
  bpf: verify callbacks as if they are called unknown number of times
  bpf: extract setup_func_entry() utility function
  bpf: extract __check_reg_arg() utility function
  selftests/bpf: fix bpf_loop_bench for new callback verification scheme
  selftests/bpf: track string payload offset as scalar in strobemeta
  selftests/bpf: track tcp payload offset as scalar in xdp_synproxy
  selftests/bpf: Add netkit to tc_redirect selftest
  selftests/bpf: De-veth-ize the tc_redirect test case
  bpf, netkit: Add indirect call wrapper for fetching peer dev
  bpf: Fix dev's rx stats for bpf_redirect_peer traffic
  veth: Use tstats per-CPU traffic counters
  netkit: Add tstats per-CPU traffic counters
  net: Move {l,t,d}stats allocation to core and convert veth & vrf
  net, vrf: Move dstats structure to core
====================

Link: https://lore.kernel.org/r/20231121193113.11796-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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