Merge branch 'net-sched-sch_teql-fix-transmit-path-regressions'

Jamal Hadi Salim says:

====================
net/sched: sch_teql: fix transmit-path regressions

- Patch 1/2 is unchanged

- Patch 2/2 now fixes the drop accounting raised by the Sashiko
  review of v1 (both providers): only NETDEV_TX_OK and NET_XMIT_CN
  count as accepted transmits (CN can accompany acceptance of the
  current packet); any other consumed result, e.g. NET_XMIT_DROP,
  is charged to tx_dropped instead of being counted as a good
  transmit.  The skb-ownership fix is unchanged (Sashiko-gemini).

The v2 revision follows the review of patch 2/2
(https://lore.kernel.org/netdev/179248763469.3135.1739559328868319628@kernel.org/)
and Simon Horman's request for a response
(https://lore.kernel.org/netdev/20261023162821.GN708417@horms.kernel.org/).

Two independent sch_teql regressions on the transmit path.

Patch 1 makes slaves_lock safe for the hard-IRQ-disabled netpoll path and
for PREEMPT_RT by converting it to a raw spinlock taken with IRQs saved.

Patch 2 fixes a use-after-free when a lower virtual device consumes an skb
but returns NET_XMIT_DROP rather than NETDEV_TX_OK, and stops counting
those consumed drops as good transmits.
====================

Link: https://patch.msgid.link/QDISC-Y0BY.v2.r0.20261024060625@mojatatu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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