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, 216 insertions, 0 deletions

diff --git a/drivers/media/pci/mantis/mantis_dma.c b/drivers/media/pci/mantis/mantis_dma.c
new file mode 100644
index 000000000..80c843936
--- /dev/null
+++ b/drivers/media/pci/mantis/mantis_dma.c
@@ -0,0 +1,216 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+	Mantis PCI bridge driver
+
+	Copyright (C) Manu Abraham (abraham.manu@gmail.com)
+
+*/
+
+#include <linux/kernel.h>
+#include <asm/page.h>
+#include <linux/vmalloc.h>
+#include <linux/pci.h>
+
+#include <asm/irq.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+
+#include <media/dmxdev.h>
+#include <media/dvbdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_frontend.h>
+#include <media/dvb_net.h>
+
+#include "mantis_common.h"
+#include "mantis_reg.h"
+#include "mantis_dma.h"
+
+#define RISC_WRITE		(0x01 << 28)
+#define RISC_JUMP		(0x07 << 28)
+#define RISC_IRQ		(0x01 << 24)
+
+#define RISC_STATUS(status)	((((~status) & 0x0f) << 20) | ((status & 0x0f) << 16))
+#define RISC_FLUSH(risc_pos)		(risc_pos = 0)
+#define RISC_INSTR(risc_pos, opcode)	(mantis->risc_cpu[risc_pos++] = cpu_to_le32(opcode))
+
+#define MANTIS_BUF_SIZE		(64 * 1024)
+#define MANTIS_BLOCK_BYTES      (MANTIS_BUF_SIZE / 4)
+#define MANTIS_DMA_TR_BYTES     (2 * 1024) /* upper limit: 4095 bytes. */
+#define MANTIS_BLOCK_COUNT	(MANTIS_BUF_SIZE / MANTIS_BLOCK_BYTES)
+
+#define MANTIS_DMA_TR_UNITS     (MANTIS_BLOCK_BYTES / MANTIS_DMA_TR_BYTES)
+/* MANTIS_BUF_SIZE / MANTIS_DMA_TR_UNITS must not exceed MANTIS_RISC_SIZE (4k RISC cmd buffer) */
+#define MANTIS_RISC_SIZE	PAGE_SIZE /* RISC program must fit here. */
+
+int mantis_dma_exit(struct mantis_pci *mantis)
+{
+	if (mantis->buf_cpu) {
+		dprintk(MANTIS_ERROR, 1,
+			"DMA=0x%lx cpu=0x%p size=%d",
+			(unsigned long) mantis->buf_dma,
+			 mantis->buf_cpu,
+			 MANTIS_BUF_SIZE);
+
+		dma_free_coherent(&mantis->pdev->dev, MANTIS_BUF_SIZE,
+				  mantis->buf_cpu, mantis->buf_dma);
+
+		mantis->buf_cpu = NULL;
+	}
+	if (mantis->risc_cpu) {
+		dprintk(MANTIS_ERROR, 1,
+			"RISC=0x%lx cpu=0x%p size=%lx",
+			(unsigned long) mantis->risc_dma,
+			mantis->risc_cpu,
+			MANTIS_RISC_SIZE);
+
+		dma_free_coherent(&mantis->pdev->dev, MANTIS_RISC_SIZE,
+				  mantis->risc_cpu, mantis->risc_dma);
+
+		mantis->risc_cpu = NULL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mantis_dma_exit);
+
+static inline int mantis_alloc_buffers(struct mantis_pci *mantis)
+{
+	if (!mantis->buf_cpu) {
+		mantis->buf_cpu = dma_alloc_coherent(&mantis->pdev->dev,
+						     MANTIS_BUF_SIZE,
+						     &mantis->buf_dma, GFP_KERNEL);
+		if (!mantis->buf_cpu) {
+			dprintk(MANTIS_ERROR, 1,
+				"DMA buffer allocation failed");
+
+			goto err;
+		}
+		dprintk(MANTIS_ERROR, 1,
+			"DMA=0x%lx cpu=0x%p size=%d",
+			(unsigned long) mantis->buf_dma,
+			mantis->buf_cpu, MANTIS_BUF_SIZE);
+	}
+	if (!mantis->risc_cpu) {
+		mantis->risc_cpu = dma_alloc_coherent(&mantis->pdev->dev,
+						      MANTIS_RISC_SIZE,
+						      &mantis->risc_dma, GFP_KERNEL);
+
+		if (!mantis->risc_cpu) {
+			dprintk(MANTIS_ERROR, 1,
+				"RISC program allocation failed");
+
+			mantis_dma_exit(mantis);
+
+			goto err;
+		}
+		dprintk(MANTIS_ERROR, 1,
+			"RISC=0x%lx cpu=0x%p size=%lx",
+			(unsigned long) mantis->risc_dma,
+			mantis->risc_cpu, MANTIS_RISC_SIZE);
+	}
+
+	return 0;
+err:
+	dprintk(MANTIS_ERROR, 1, "Out of memory (?) .....");
+	return -ENOMEM;
+}
+
+int mantis_dma_init(struct mantis_pci *mantis)
+{
+	int err;
+
+	dprintk(MANTIS_DEBUG, 1, "Mantis DMA init");
+	err = mantis_alloc_buffers(mantis);
+	if (err < 0) {
+		dprintk(MANTIS_ERROR, 1, "Error allocating DMA buffer");
+
+		/* Stop RISC Engine */
+		mmwrite(0, MANTIS_DMA_CTL);
+
+		return err;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mantis_dma_init);
+
+static inline void mantis_risc_program(struct mantis_pci *mantis)
+{
+	u32 buf_pos = 0;
+	u32 line, step;
+	u32 risc_pos;
+
+	dprintk(MANTIS_DEBUG, 1, "Mantis create RISC program");
+	RISC_FLUSH(risc_pos);
+
+	dprintk(MANTIS_DEBUG, 1, "risc len lines %u, bytes per line %u, bytes per DMA tr %u",
+		MANTIS_BLOCK_COUNT, MANTIS_BLOCK_BYTES, MANTIS_DMA_TR_BYTES);
+
+	for (line = 0; line < MANTIS_BLOCK_COUNT; line++) {
+		for (step = 0; step < MANTIS_DMA_TR_UNITS; step++) {
+			dprintk(MANTIS_DEBUG, 1, "RISC PROG line=[%d], step=[%d]", line, step);
+			if (step == 0) {
+				RISC_INSTR(risc_pos, RISC_WRITE	|
+					   RISC_IRQ	|
+					   RISC_STATUS(line) |
+					   MANTIS_DMA_TR_BYTES);
+			} else {
+				RISC_INSTR(risc_pos, RISC_WRITE | MANTIS_DMA_TR_BYTES);
+			}
+			RISC_INSTR(risc_pos, mantis->buf_dma + buf_pos);
+			buf_pos += MANTIS_DMA_TR_BYTES;
+		  }
+	}
+	RISC_INSTR(risc_pos, RISC_JUMP);
+	RISC_INSTR(risc_pos, mantis->risc_dma);
+}
+
+void mantis_dma_start(struct mantis_pci *mantis)
+{
+	dprintk(MANTIS_DEBUG, 1, "Mantis Start DMA engine");
+
+	mantis_risc_program(mantis);
+	mmwrite(mantis->risc_dma, MANTIS_RISC_START);
+	mmwrite(mmread(MANTIS_GPIF_ADDR) | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_ADDR);
+
+	mmwrite(0, MANTIS_DMA_CTL);
+	mantis->last_block = mantis->busy_block = 0;
+
+	mantis_unmask_ints(mantis, MANTIS_INT_RISCI);
+
+	mmwrite(MANTIS_FIFO_EN | MANTIS_DCAP_EN
+			       | MANTIS_RISC_EN, MANTIS_DMA_CTL);
+
+}
+
+void mantis_dma_stop(struct mantis_pci *mantis)
+{
+	dprintk(MANTIS_DEBUG, 1, "Mantis Stop DMA engine");
+
+	mmwrite((mmread(MANTIS_GPIF_ADDR) & (~(MANTIS_GPIF_HIFRDWRN))), MANTIS_GPIF_ADDR);
+
+	mmwrite((mmread(MANTIS_DMA_CTL) & ~(MANTIS_FIFO_EN |
+					    MANTIS_DCAP_EN |
+					    MANTIS_RISC_EN)), MANTIS_DMA_CTL);
+
+	mmwrite(mmread(MANTIS_INT_STAT), MANTIS_INT_STAT);
+
+	mantis_mask_ints(mantis, MANTIS_INT_RISCI | MANTIS_INT_RISCEN);
+}
+
+
+void mantis_dma_xfer(struct tasklet_struct *t)
+{
+	struct mantis_pci *mantis = from_tasklet(mantis, t, tasklet);
+	struct mantis_hwconfig *config = mantis->hwconfig;
+
+	while (mantis->last_block != mantis->busy_block) {
+		dprintk(MANTIS_DEBUG, 1, "last block=[%d] finished block=[%d]",
+			mantis->last_block, mantis->busy_block);
+
+		(config->ts_size ? dvb_dmx_swfilter_204 : dvb_dmx_swfilter)
+		(&mantis->demux, &mantis->buf_cpu[mantis->last_block * MANTIS_BLOCK_BYTES], MANTIS_BLOCK_BYTES);
+		mantis->last_block = (mantis->last_block + 1) % MANTIS_BLOCK_COUNT;
+	}
+}