Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 247 insertions, 0 deletions

diff --git a/drivers/media/pci/cobalt/cobalt-irq.c b/drivers/media/pci/cobalt/cobalt-irq.c
new file mode 100644
index 000000000..a518927ab
--- /dev/null
+++ b/drivers/media/pci/cobalt/cobalt-irq.c
@@ -0,0 +1,247 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  cobalt interrupt handling
+ *
+ *  Copyright 2012-2015 Cisco Systems, Inc. and/or its affiliates.
+ *  All rights reserved.
+ */
+
+#include <media/i2c/adv7604.h>
+
+#include "cobalt-driver.h"
+#include "cobalt-irq.h"
+#include "cobalt-omnitek.h"
+
+static void cobalt_dma_stream_queue_handler(struct cobalt_stream *s)
+{
+	struct cobalt *cobalt = s->cobalt;
+	int rx = s->video_channel;
+	struct m00473_freewheel_regmap __iomem *fw =
+		COBALT_CVI_FREEWHEEL(s->cobalt, rx);
+	struct m00233_video_measure_regmap __iomem *vmr =
+		COBALT_CVI_VMR(s->cobalt, rx);
+	struct m00389_cvi_regmap __iomem *cvi =
+		COBALT_CVI(s->cobalt, rx);
+	struct m00479_clk_loss_detector_regmap __iomem *clkloss =
+		COBALT_CVI_CLK_LOSS(s->cobalt, rx);
+	struct cobalt_buffer *cb;
+	bool skip = false;
+
+	spin_lock(&s->irqlock);
+
+	if (list_empty(&s->bufs)) {
+		pr_err("no buffers!\n");
+		spin_unlock(&s->irqlock);
+		return;
+	}
+
+	/* Give the fresh filled up buffer to the user.
+	 * Note that the interrupt is only sent if the DMA can continue
+	 * with a new buffer, so it is always safe to return this buffer
+	 * to userspace. */
+	cb = list_first_entry(&s->bufs, struct cobalt_buffer, list);
+	list_del(&cb->list);
+	spin_unlock(&s->irqlock);
+
+	if (s->is_audio || s->is_output)
+		goto done;
+
+	if (s->unstable_frame) {
+		uint32_t stat = ioread32(&vmr->irq_status);
+
+		iowrite32(stat, &vmr->irq_status);
+		if (!(ioread32(&vmr->status) &
+		      M00233_STATUS_BITMAP_INIT_DONE_MSK)) {
+			cobalt_dbg(1, "!init_done\n");
+			if (s->enable_freewheel)
+				goto restart_fw;
+			goto done;
+		}
+
+		if (ioread32(&clkloss->status) &
+		    M00479_STATUS_BITMAP_CLOCK_MISSING_MSK) {
+			iowrite32(0, &clkloss->ctrl);
+			iowrite32(M00479_CTRL_BITMAP_ENABLE_MSK, &clkloss->ctrl);
+			cobalt_dbg(1, "no clock\n");
+			if (s->enable_freewheel)
+				goto restart_fw;
+			goto done;
+		}
+		if ((stat & (M00233_IRQ_STATUS_BITMAP_VACTIVE_AREA_MSK |
+			     M00233_IRQ_STATUS_BITMAP_HACTIVE_AREA_MSK)) ||
+				ioread32(&vmr->vactive_area) != s->timings.bt.height ||
+				ioread32(&vmr->hactive_area) != s->timings.bt.width) {
+			cobalt_dbg(1, "unstable\n");
+			if (s->enable_freewheel)
+				goto restart_fw;
+			goto done;
+		}
+		if (!s->enable_cvi) {
+			s->enable_cvi = true;
+			iowrite32(M00389_CONTROL_BITMAP_ENABLE_MSK, &cvi->control);
+			goto done;
+		}
+		if (!(ioread32(&cvi->status) & M00389_STATUS_BITMAP_LOCK_MSK)) {
+			cobalt_dbg(1, "cvi no lock\n");
+			if (s->enable_freewheel)
+				goto restart_fw;
+			goto done;
+		}
+		if (!s->enable_freewheel) {
+			cobalt_dbg(1, "stable\n");
+			s->enable_freewheel = true;
+			iowrite32(0, &fw->ctrl);
+			goto done;
+		}
+		cobalt_dbg(1, "enabled fw\n");
+		iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK |
+			  M00233_CONTROL_BITMAP_ENABLE_INTERRUPT_MSK,
+			  &vmr->control);
+		iowrite32(M00473_CTRL_BITMAP_ENABLE_MSK, &fw->ctrl);
+		s->enable_freewheel = false;
+		s->unstable_frame = false;
+		s->skip_first_frames = 2;
+		skip = true;
+		goto done;
+	}
+	if (ioread32(&fw->status) & M00473_STATUS_BITMAP_FREEWHEEL_MODE_MSK) {
+restart_fw:
+		cobalt_dbg(1, "lost lock\n");
+		iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK,
+			  &vmr->control);
+		iowrite32(M00473_CTRL_BITMAP_ENABLE_MSK |
+			  M00473_CTRL_BITMAP_FORCE_FREEWHEEL_MODE_MSK,
+			  &fw->ctrl);
+		iowrite32(0, &cvi->control);
+		s->unstable_frame = true;
+		s->enable_freewheel = false;
+		s->enable_cvi = false;
+	}
+done:
+	if (s->skip_first_frames) {
+		skip = true;
+		s->skip_first_frames--;
+	}
+	cb->vb.vb2_buf.timestamp = ktime_get_ns();
+	/* TODO: the sequence number should be read from the FPGA so we
+	   also know about dropped frames. */
+	cb->vb.sequence = s->sequence++;
+	vb2_buffer_done(&cb->vb.vb2_buf,
+			(skip || s->unstable_frame) ?
+			VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
+}
+
+irqreturn_t cobalt_irq_handler(int irq, void *dev_id)
+{
+	struct cobalt *cobalt = (struct cobalt *)dev_id;
+	u32 dma_interrupt =
+		cobalt_read_bar0(cobalt, DMA_INTERRUPT_STATUS_REG) & 0xffff;
+	u32 mask = cobalt_read_bar1(cobalt, COBALT_SYS_STAT_MASK);
+	u32 edge = cobalt_read_bar1(cobalt, COBALT_SYS_STAT_EDGE);
+	int i;
+
+	/* Clear DMA interrupt */
+	cobalt_write_bar0(cobalt, DMA_INTERRUPT_STATUS_REG, dma_interrupt);
+	cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK, mask & ~edge);
+	cobalt_write_bar1(cobalt, COBALT_SYS_STAT_EDGE, edge);
+
+	for (i = 0; i < COBALT_NUM_STREAMS; i++) {
+		struct cobalt_stream *s = &cobalt->streams[i];
+		unsigned dma_fifo_mask = s->dma_fifo_mask;
+
+		if (dma_interrupt & (1 << s->dma_channel)) {
+			cobalt->irq_dma[i]++;
+			/* Give fresh buffer to user and chain newly
+			 * queued buffers */
+			cobalt_dma_stream_queue_handler(s);
+			if (!s->is_audio) {
+				edge &= ~dma_fifo_mask;
+				cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK,
+						  mask & ~edge);
+			}
+		}
+		if (s->is_audio)
+			continue;
+		if (edge & s->adv_irq_mask)
+			set_bit(COBALT_STREAM_FL_ADV_IRQ, &s->flags);
+		if ((edge & mask & dma_fifo_mask) && vb2_is_streaming(&s->q)) {
+			cobalt_info("full rx FIFO %d\n", i);
+			cobalt->irq_full_fifo++;
+		}
+	}
+
+	queue_work(cobalt->irq_work_queues, &cobalt->irq_work_queue);
+
+	if (edge & mask & (COBALT_SYSSTAT_VI0_INT1_MSK |
+			   COBALT_SYSSTAT_VI1_INT1_MSK |
+			   COBALT_SYSSTAT_VI2_INT1_MSK |
+			   COBALT_SYSSTAT_VI3_INT1_MSK |
+			   COBALT_SYSSTAT_VIHSMA_INT1_MSK |
+			   COBALT_SYSSTAT_VOHSMA_INT1_MSK))
+		cobalt->irq_adv1++;
+	if (edge & mask & (COBALT_SYSSTAT_VI0_INT2_MSK |
+			   COBALT_SYSSTAT_VI1_INT2_MSK |
+			   COBALT_SYSSTAT_VI2_INT2_MSK |
+			   COBALT_SYSSTAT_VI3_INT2_MSK |
+			   COBALT_SYSSTAT_VIHSMA_INT2_MSK))
+		cobalt->irq_adv2++;
+	if (edge & mask & COBALT_SYSSTAT_VOHSMA_INT1_MSK)
+		cobalt->irq_advout++;
+	if (dma_interrupt)
+		cobalt->irq_dma_tot++;
+	if (!(edge & mask) && !dma_interrupt)
+		cobalt->irq_none++;
+	dma_interrupt = cobalt_read_bar0(cobalt, DMA_INTERRUPT_STATUS_REG);
+
+	return IRQ_HANDLED;
+}
+
+void cobalt_irq_work_handler(struct work_struct *work)
+{
+	struct cobalt *cobalt =
+		container_of(work, struct cobalt, irq_work_queue);
+	int i;
+
+	for (i = 0; i < COBALT_NUM_NODES; i++) {
+		struct cobalt_stream *s = &cobalt->streams[i];
+
+		if (test_and_clear_bit(COBALT_STREAM_FL_ADV_IRQ, &s->flags)) {
+			u32 mask;
+
+			v4l2_subdev_call(cobalt->streams[i].sd, core,
+					interrupt_service_routine, 0, NULL);
+			mask = cobalt_read_bar1(cobalt, COBALT_SYS_STAT_MASK);
+			cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK,
+				mask | s->adv_irq_mask);
+		}
+	}
+}
+
+void cobalt_irq_log_status(struct cobalt *cobalt)
+{
+	u32 mask;
+	int i;
+
+	cobalt_info("irq: adv1=%u adv2=%u advout=%u none=%u full=%u\n",
+		    cobalt->irq_adv1, cobalt->irq_adv2, cobalt->irq_advout,
+		    cobalt->irq_none, cobalt->irq_full_fifo);
+	cobalt_info("irq: dma_tot=%u (", cobalt->irq_dma_tot);
+	for (i = 0; i < COBALT_NUM_STREAMS; i++)
+		pr_cont("%s%u", i ? "/" : "", cobalt->irq_dma[i]);
+	pr_cont(")\n");
+	cobalt->irq_dma_tot = cobalt->irq_adv1 = cobalt->irq_adv2 = 0;
+	cobalt->irq_advout = cobalt->irq_none = cobalt->irq_full_fifo = 0;
+	memset(cobalt->irq_dma, 0, sizeof(cobalt->irq_dma));
+
+	mask = cobalt_read_bar1(cobalt, COBALT_SYS_STAT_MASK);
+	cobalt_write_bar1(cobalt, COBALT_SYS_STAT_MASK,
+			mask |
+			COBALT_SYSSTAT_VI0_LOST_DATA_MSK |
+			COBALT_SYSSTAT_VI1_LOST_DATA_MSK |
+			COBALT_SYSSTAT_VI2_LOST_DATA_MSK |
+			COBALT_SYSSTAT_VI3_LOST_DATA_MSK |
+			COBALT_SYSSTAT_VIHSMA_LOST_DATA_MSK |
+			COBALT_SYSSTAT_VOHSMA_LOST_DATA_MSK |
+			COBALT_SYSSTAT_AUD_IN_LOST_DATA_MSK |
+			COBALT_SYSSTAT_AUD_OUT_LOST_DATA_MSK);
+}