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, 236 insertions, 0 deletions

diff --git a/sound/isa/gus/gus_dma.c b/sound/isa/gus/gus_dma.c
new file mode 100644
index 000000000..6d664dd8d
--- /dev/null
+++ b/sound/isa/gus/gus_dma.c
@@ -0,0 +1,236 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Routines for GF1 DMA control
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ */
+
+#include <asm/dma.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/gus.h>
+
+static void snd_gf1_dma_ack(struct snd_gus_card * gus)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&gus->reg_lock, flags);
+	snd_gf1_write8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL, 0x00);
+	snd_gf1_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL);
+	spin_unlock_irqrestore(&gus->reg_lock, flags);
+}
+
+static void snd_gf1_dma_program(struct snd_gus_card * gus,
+				unsigned int addr,
+				unsigned long buf_addr,
+				unsigned int count,
+				unsigned int cmd)
+{
+	unsigned long flags;
+	unsigned int address;
+	unsigned char dma_cmd;
+	unsigned int address_high;
+
+	snd_printdd("dma_transfer: addr=0x%x, buf=0x%lx, count=0x%x\n",
+		    addr, buf_addr, count);
+
+	if (gus->gf1.dma1 > 3) {
+		if (gus->gf1.enh_mode) {
+			address = addr >> 1;
+		} else {
+			if (addr & 0x1f) {
+				snd_printd("snd_gf1_dma_transfer: unaligned address (0x%x)?\n", addr);
+				return;
+			}
+			address = (addr & 0x000c0000) | ((addr & 0x0003ffff) >> 1);
+		}
+	} else {
+		address = addr;
+	}
+
+	dma_cmd = SNDRV_GF1_DMA_ENABLE | (unsigned short) cmd;
+#if 0
+	dma_cmd |= 0x08;
+#endif
+	if (dma_cmd & SNDRV_GF1_DMA_16BIT) {
+		count++;
+		count &= ~1;	/* align */
+	}
+	if (gus->gf1.dma1 > 3) {
+		dma_cmd |= SNDRV_GF1_DMA_WIDTH16;
+		count++;
+		count &= ~1;	/* align */
+	}
+	snd_gf1_dma_ack(gus);
+	snd_dma_program(gus->gf1.dma1, buf_addr, count, dma_cmd & SNDRV_GF1_DMA_READ ? DMA_MODE_READ : DMA_MODE_WRITE);
+#if 0
+	snd_printk(KERN_DEBUG "address = 0x%x, count = 0x%x, dma_cmd = 0x%x\n",
+		   address << 1, count, dma_cmd);
+#endif
+	spin_lock_irqsave(&gus->reg_lock, flags);
+	if (gus->gf1.enh_mode) {
+		address_high = ((address >> 16) & 0x000000f0) | (address & 0x0000000f);
+		snd_gf1_write16(gus, SNDRV_GF1_GW_DRAM_DMA_LOW, (unsigned short) (address >> 4));
+		snd_gf1_write8(gus, SNDRV_GF1_GB_DRAM_DMA_HIGH, (unsigned char) address_high);
+	} else
+		snd_gf1_write16(gus, SNDRV_GF1_GW_DRAM_DMA_LOW, (unsigned short) (address >> 4));
+	snd_gf1_write8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL, dma_cmd);
+	spin_unlock_irqrestore(&gus->reg_lock, flags);
+}
+
+static struct snd_gf1_dma_block *snd_gf1_dma_next_block(struct snd_gus_card * gus)
+{
+	struct snd_gf1_dma_block *block;
+
+	/* PCM block have bigger priority than synthesizer one */
+	if (gus->gf1.dma_data_pcm) {
+		block = gus->gf1.dma_data_pcm;
+		if (gus->gf1.dma_data_pcm_last == block) {
+			gus->gf1.dma_data_pcm =
+			gus->gf1.dma_data_pcm_last = NULL;
+		} else {
+			gus->gf1.dma_data_pcm = block->next;
+		}
+	} else if (gus->gf1.dma_data_synth) {
+		block = gus->gf1.dma_data_synth;
+		if (gus->gf1.dma_data_synth_last == block) {
+			gus->gf1.dma_data_synth =
+			gus->gf1.dma_data_synth_last = NULL;
+		} else {
+			gus->gf1.dma_data_synth = block->next;
+		}
+	} else {
+		block = NULL;
+	}
+	if (block) {
+		gus->gf1.dma_ack = block->ack;
+		gus->gf1.dma_private_data = block->private_data;
+	}
+	return block;
+}
+
+
+static void snd_gf1_dma_interrupt(struct snd_gus_card * gus)
+{
+	struct snd_gf1_dma_block *block;
+
+	snd_gf1_dma_ack(gus);
+	if (gus->gf1.dma_ack)
+		gus->gf1.dma_ack(gus, gus->gf1.dma_private_data);
+	spin_lock(&gus->dma_lock);
+	if (gus->gf1.dma_data_pcm == NULL &&
+	    gus->gf1.dma_data_synth == NULL) {
+	    	gus->gf1.dma_ack = NULL;
+		gus->gf1.dma_flags &= ~SNDRV_GF1_DMA_TRIGGER;
+		spin_unlock(&gus->dma_lock);
+		return;
+	}
+	block = snd_gf1_dma_next_block(gus);
+	spin_unlock(&gus->dma_lock);
+	if (!block)
+		return;
+	snd_gf1_dma_program(gus, block->addr, block->buf_addr, block->count, (unsigned short) block->cmd);
+	kfree(block);
+#if 0
+	snd_printd(KERN_DEBUG "program dma (IRQ) - "
+		   "addr = 0x%x, buffer = 0x%lx, count = 0x%x, cmd = 0x%x\n",
+		   block->addr, block->buf_addr, block->count, block->cmd);
+#endif
+}
+
+int snd_gf1_dma_init(struct snd_gus_card * gus)
+{
+	mutex_lock(&gus->dma_mutex);
+	gus->gf1.dma_shared++;
+	if (gus->gf1.dma_shared > 1) {
+		mutex_unlock(&gus->dma_mutex);
+		return 0;
+	}
+	gus->gf1.interrupt_handler_dma_write = snd_gf1_dma_interrupt;
+	gus->gf1.dma_data_pcm = 
+	gus->gf1.dma_data_pcm_last =
+	gus->gf1.dma_data_synth = 
+	gus->gf1.dma_data_synth_last = NULL;
+	mutex_unlock(&gus->dma_mutex);
+	return 0;
+}
+
+int snd_gf1_dma_done(struct snd_gus_card * gus)
+{
+	struct snd_gf1_dma_block *block;
+
+	mutex_lock(&gus->dma_mutex);
+	gus->gf1.dma_shared--;
+	if (!gus->gf1.dma_shared) {
+		snd_dma_disable(gus->gf1.dma1);
+		snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_WRITE);
+		snd_gf1_dma_ack(gus);
+		while ((block = gus->gf1.dma_data_pcm)) {
+			gus->gf1.dma_data_pcm = block->next;
+			kfree(block);
+		}
+		while ((block = gus->gf1.dma_data_synth)) {
+			gus->gf1.dma_data_synth = block->next;
+			kfree(block);
+		}
+		gus->gf1.dma_data_pcm_last =
+		gus->gf1.dma_data_synth_last = NULL;
+	}
+	mutex_unlock(&gus->dma_mutex);
+	return 0;
+}
+
+int snd_gf1_dma_transfer_block(struct snd_gus_card * gus,
+			       struct snd_gf1_dma_block * __block,
+			       int atomic,
+			       int synth)
+{
+	unsigned long flags;
+	struct snd_gf1_dma_block *block;
+
+	block = kmalloc(sizeof(*block), atomic ? GFP_ATOMIC : GFP_KERNEL);
+	if (!block)
+		return -ENOMEM;
+
+	*block = *__block;
+	block->next = NULL;
+
+	snd_printdd("addr = 0x%x, buffer = 0x%lx, count = 0x%x, cmd = 0x%x\n",
+		    block->addr, (long) block->buffer, block->count,
+		    block->cmd);
+
+	snd_printdd("gus->gf1.dma_data_pcm_last = 0x%lx\n",
+		    (long)gus->gf1.dma_data_pcm_last);
+	snd_printdd("gus->gf1.dma_data_pcm = 0x%lx\n",
+		    (long)gus->gf1.dma_data_pcm);
+
+	spin_lock_irqsave(&gus->dma_lock, flags);
+	if (synth) {
+		if (gus->gf1.dma_data_synth_last) {
+			gus->gf1.dma_data_synth_last->next = block;
+			gus->gf1.dma_data_synth_last = block;
+		} else {
+			gus->gf1.dma_data_synth = 
+			gus->gf1.dma_data_synth_last = block;
+		}
+	} else {
+		if (gus->gf1.dma_data_pcm_last) {
+			gus->gf1.dma_data_pcm_last->next = block;
+			gus->gf1.dma_data_pcm_last = block;
+		} else {
+			gus->gf1.dma_data_pcm = 
+			gus->gf1.dma_data_pcm_last = block;
+		}
+	}
+	if (!(gus->gf1.dma_flags & SNDRV_GF1_DMA_TRIGGER)) {
+		gus->gf1.dma_flags |= SNDRV_GF1_DMA_TRIGGER;
+		block = snd_gf1_dma_next_block(gus);
+		spin_unlock_irqrestore(&gus->dma_lock, flags);
+		if (block == NULL)
+			return 0;
+		snd_gf1_dma_program(gus, block->addr, block->buf_addr, block->count, (unsigned short) block->cmd);
+		kfree(block);
+		return 0;
+	}
+	spin_unlock_irqrestore(&gus->dma_lock, flags);
+	return 0;
+}