Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted

Pull media updates from Mauro Carvalho Chehab:

 - v4l2-core: added ISP statistics support and per-block validation

 - v4l2-core: Allow unknown HDR10 white point and luminance

 - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor

 - New codec: Milos: VPU v2.0 codec support

 - isp driver: gained support for Dreamchip RPPX1 ISP framework

 - vsp1 driver: gained support for RZ/T2H and RZ/N2H

 - Novalake driver: gained CVS support for new NVL hardware

 - dvb-core: fix feed leak on failed DMX_ADD_PID

 - several driver fixes, cleanups and minor improvements

* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
  media: ipu-bridge: check all DMI entries when overriding sensor rotation
  media: v4l2-async: avoid deleting unlinked ASC entry on link error
  media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
  media: intel/ipu6: fix async notifier cleanup leak on parse error
  media: staging/ipu7: fix async notifier UAF on probe error path
  media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
  media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
  media: rcar-isp: Fix VSPX reference leaks
  media: rcar-isp: Release ISPCORE resources
  media: i2c: imx415: Release runtime PM reference on VBLANK error
  media: i2c: imx415: Return test pattern write errors
  media: renesas: vsp1: Declare index variables in for loop statement
  media: renesas: vsp1: Make reset control optional to support platforms without a reset line
  media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
  media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
  media: nxp: imx8-isi: Add additional 32-bit RGB format support
  media: nxp: imx8-isi: Add 16-bit raw Bayer format support
  media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
  media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
  media: nxp: imx8-isi: Correct color map between V4L2 and ISI
  ...

1 files changed, 114 insertions, 0 deletions

diff --git a/include/net/dropreason-qdisc.h b/include/net/dropreason-qdisc.h
new file mode 100644
index 000000000..fb151cd31
--- /dev/null
+++ b/include/net/dropreason-qdisc.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef _LINUX_DROPREASON_QDISC_H
+#define _LINUX_DROPREASON_QDISC_H
+#include <net/dropreason.h>
+
+#define DEFINE_QDISC_DROP_REASON(FN, FNe)	\
+	FN(UNSPEC)			\
+	FN(GENERIC)			\
+	FN(OVERLIMIT)			\
+	FN(CONGESTED)			\
+	FN(MAXFLOWS)			\
+	FN(FLOOD_PROTECTION)		\
+	FN(BAND_LIMIT)		\
+	FN(HORIZON_LIMIT)		\
+	FN(FLOW_LIMIT)			\
+	FN(L4S_STEP_NON_ECN)		\
+	FNe(MAX)
+
+#undef FN
+#undef FNe
+#define FN(reason)	QDISC_DROP_##reason,
+#define FNe(reason)	QDISC_DROP_##reason
+
+/**
+ * enum qdisc_drop_reason - reason why a qdisc dropped a packet
+ *
+ * Qdisc-specific drop reasons for packet drops that occur within the
+ * traffic control (TC) queueing discipline layer. These reasons provide
+ * detailed diagnostics about why packets were dropped by various qdisc
+ * algorithms, enabling fine-grained monitoring and troubleshooting of
+ * queue behavior.
+ */
+enum qdisc_drop_reason {
+	/**
+	 * @QDISC_DROP_UNSPEC: unspecified/invalid qdisc drop reason.
+	 * Value 0 serves as analogous to SKB_NOT_DROPPED_YET for enum skb_drop_reason.
+	 * Used for catching zero-initialized drop_reason fields.
+	 */
+	QDISC_DROP_UNSPEC = 0,
+	/**
+	 * @__QDISC_DROP_REASON: subsystem base value for qdisc drop reasons
+	 */
+	__QDISC_DROP_REASON = SKB_DROP_REASON_SUBSYS_QDISC <<
+				SKB_DROP_REASON_SUBSYS_SHIFT,
+	/**
+	 * @QDISC_DROP_GENERIC: generic/default qdisc drop, used when no
+	 * more specific reason applies
+	 */
+	QDISC_DROP_GENERIC,
+	/**
+	 * @QDISC_DROP_OVERLIMIT: packet dropped because the qdisc queue
+	 * length exceeded its configured limit (sch->limit). This typically
+	 * indicates the queue is full and cannot accept more packets.
+	 */
+	QDISC_DROP_OVERLIMIT,
+	/**
+	 * @QDISC_DROP_CONGESTED: packet dropped due to active congestion
+	 * control algorithms (e.g., CoDel, PIE, RED) detecting network
+	 * congestion. The qdisc proactively dropped the packet to signal
+	 * congestion to the sender and prevent bufferbloat.
+	 */
+	QDISC_DROP_CONGESTED,
+	/**
+	 * @QDISC_DROP_MAXFLOWS: packet dropped because the qdisc's flow
+	 * tracking table is full and no free slots are available to allocate
+	 * for a new flow. This indicates flow table exhaustion in flow-based
+	 * qdiscs that maintain per-flow state (e.g., SFQ).
+	 */
+	QDISC_DROP_MAXFLOWS,
+	/**
+	 * @QDISC_DROP_FLOOD_PROTECTION: packet dropped by flood protection
+	 * mechanism detecting unresponsive flows (potential DoS/flood).
+	 * Used by qdiscs implementing probabilistic drop algorithms like
+	 * BLUE (e.g., CAKE's Cobalt AQM).
+	 */
+	QDISC_DROP_FLOOD_PROTECTION,
+	/**
+	 * @QDISC_DROP_BAND_LIMIT: packet dropped because the priority band's
+	 * limit was reached. Used by qdiscs with priority bands that have
+	 * per-band packet limits (e.g., FQ).
+	 */
+	QDISC_DROP_BAND_LIMIT,
+	/**
+	 * @QDISC_DROP_HORIZON_LIMIT: packet dropped because its timestamp
+	 * is too far in the future (beyond the configured horizon).
+	 * Used by qdiscs with time-based scheduling (e.g., FQ).
+	 */
+	QDISC_DROP_HORIZON_LIMIT,
+	/**
+	 * @QDISC_DROP_FLOW_LIMIT: packet dropped because an individual flow
+	 * exceeded its per-flow packet/depth limit. Used by FQ and SFQ qdiscs
+	 * to enforce per-flow fairness and prevent a single flow from
+	 * monopolizing queue resources.
+	 */
+	QDISC_DROP_FLOW_LIMIT,
+	/**
+	 * @QDISC_DROP_L4S_STEP_NON_ECN: DualPI2 qdisc dropped a non-ECN-capable
+	 * packet because the L4S queue delay exceeded the step threshold.
+	 * Since the packet cannot be ECN-marked, it must be dropped to signal
+	 * congestion. See RFC 9332 for the DualQ Coupled AQM step mechanism.
+	 */
+	QDISC_DROP_L4S_STEP_NON_ECN,
+	/**
+	 * @QDISC_DROP_MAX: the maximum of qdisc drop reasons, which
+	 * shouldn't be used as a real 'reason' - only for tracing code gen
+	 */
+	QDISC_DROP_MAX,
+};
+
+#undef FN
+#undef FNe
+
+#endif