[PATCH net v2 0/3] Fix broken TC_ACT_REDIRECT from qdiscs

[Daniel Borkmann <daniel@iogearbox.net>]

This is an alternative fix to [0] in order to not uglify
__dev_queue_xmit() with sprinkled ifdefs given this can be
simplified and isolated through a simple test into the BPF
redirect helper itself.

I've also added a proper BPF selftest, so there is no need
to check-in a binary BPF object into selftests given we do
have BPF infra for all of this.

  [0] https://lore.kernel.org/netdev/20260629102157.737306-1-jhs@mojatatu.com/
  [1] https://lore.kernel.org/netdev/20260629102157.737306-4-jhs@mojatatu.com/

v1 -> v2:
  - Added Sebastian's Reviewed-by
  - Rebase to latest net, rest is same (Paolo)

Daniel Borkmann (2):
  bpf: Reject redirect helpers without a bpf_net_context
  selftests/bpf: Add test for redirect from qdisc qevent block

Jamal Hadi Salim (1):
  net/sched: Handle TC_ACT_REDIRECT from qdisc filter chains

 include/net/pkt_cls.h                         |  14 ++-
 net/core/filter.c                             |  17 ++-
 net/sched/cls_api.c                           |   6 +-
 net/sched/sch_cake.c                          |   2 +-
 net/sched/sch_drr.c                           |   2 +-
 net/sched/sch_dualpi2.c                       |   2 +-
 net/sched/sch_ets.c                           |   2 +-
 net/sched/sch_fq_codel.c                      |   2 +-
 net/sched/sch_fq_pie.c                        |   2 +-
 net/sched/sch_hfsc.c                          |   2 +-
 net/sched/sch_htb.c                           |   2 +-
 net/sched/sch_multiq.c                        |   2 +-
 net/sched/sch_prio.c                          |   2 +-
 net/sched/sch_qfq.c                           |   2 +-
 net/sched/sch_sfb.c                           |   2 +-
 net/sched/sch_sfq.c                           |   2 +-
 tools/testing/selftests/bpf/config            |   1 +
 .../selftests/bpf/prog_tests/tc_qevent.c      | 113 ++++++++++++++++++
 .../selftests/bpf/progs/test_tc_qevent.c      |  23 ++++
 19 files changed, 175 insertions(+), 25 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/tc_qevent.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_tc_qevent.c

-- 
2.43.0