netdev - [PATCH bpf v3 0/8] bpf_redirect

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Date: Tue, 14 Nov 2023 01:42:12 +0100
From: Daniel Borkmann <daniel@...earbox.net>
To: martin.lau@...nel.org
Cc: kuba@...nel.org,
	razor@...ckwall.org,
	sdf@...gle.com,
	horms@...nel.org,
	netdev@...r.kernel.org,
	bpf@...r.kernel.org,
	Daniel Borkmann <daniel@...earbox.net>
Subject: [PATCH bpf v3 0/8] bpf_redirect_peer fixes

This fixes bpf_redirect_peer stats accounting for veth and netkit,
and adds tstats in the first place for the latter. Utilise indirect
call wrapper for bpf_redirect_peer, and improve test coverage of the
latter also for netkit devices. Details in the patches, thanks!

The series was targeted at bpf originally, and is done here as well,
so it can trigger BPF CI. Jakub, if you think directly going via net
is better since the majority of the diff touches net anyway, that is
fine, too.

Thanks!

v2 -> v3:
  - Add kdoc for pcpu_stat_type (Simon)
  - Reject invalid type value in netdev_do_alloc_pcpu_stats (Simon)
  - Add Reviewed-by tags from list
v1 -> v2:
  - Move stats allocation/freeing into net core (Jakub)
  - As prepwork for the above, move vrf's dstats over into the core
  - Add a check into stats alloc to enforce tstats upon
    implementing ndo_get_peer_dev
  - Add Acked-by tags from list

Daniel Borkmann (6):
  net, vrf: Move dstats structure to core
  net: Move {l,t,d}stats allocation to core and convert veth & vrf
  netkit: Add tstats per-CPU traffic counters
  bpf, netkit: Add indirect call wrapper for fetching peer dev
  selftests/bpf: De-veth-ize the tc_redirect test case
  selftests/bpf: Add netkit to tc_redirect selftest

Peilin Ye (2):
  veth: Use tstats per-CPU traffic counters
  bpf: Fix dev's rx stats for bpf_redirect_peer traffic

 drivers/net/netkit.c                          |  22 +-
 drivers/net/veth.c                            |  44 +--
 drivers/net/vrf.c                             |  38 +--
 include/linux/netdevice.h                     |  30 +-
 include/net/netkit.h                          |   6 +
 net/core/dev.c                                |  57 +++-
 net/core/filter.c                             |  19 +-
 .../selftests/bpf/prog_tests/tc_redirect.c    | 317 +++++++++++-------
 8 files changed, 334 insertions(+), 199 deletions(-)

-- 
2.34.1