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, 235 insertions, 0 deletions

diff --git a/sound/soc/sof/ipc.c b/sound/soc/sof/ipc.c
new file mode 100644
index 000000000..b53abc923
--- /dev/null
+++ b/sound/soc/sof/ipc.c
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license.  When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2018 Intel Corporation. All rights reserved.
+//
+// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
+//
+// Generic IPC layer that can work over MMIO and SPI/I2C. PHY layer provided
+// by platform driver code.
+//
+
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+#include "sof-priv.h"
+#include "sof-audio.h"
+#include "ops.h"
+
+/**
+ * sof_ipc_send_msg - generic function to prepare and send one IPC message
+ * @sdev:		pointer to SOF core device struct
+ * @msg_data:		pointer to a message to send
+ * @msg_bytes:		number of bytes in the message
+ * @reply_bytes:	number of bytes available for the reply.
+ *			The buffer for the reply data is not passed to this
+ *			function, the available size is an information for the
+ *			reply handling functions.
+ *
+ * On success the function returns 0, otherwise negative error number.
+ *
+ * Note: higher level sdev->ipc->tx_mutex must be held to make sure that
+ *	 transfers are synchronized.
+ */
+int sof_ipc_send_msg(struct snd_sof_dev *sdev, void *msg_data, size_t msg_bytes,
+		     size_t reply_bytes)
+{
+	struct snd_sof_ipc *ipc = sdev->ipc;
+	struct snd_sof_ipc_msg *msg;
+	int ret;
+
+	if (ipc->disable_ipc_tx || sdev->fw_state != SOF_FW_BOOT_COMPLETE)
+		return -ENODEV;
+
+	/*
+	 * The spin-lock is needed to protect message objects against other
+	 * atomic contexts.
+	 */
+	spin_lock_irq(&sdev->ipc_lock);
+
+	/* initialise the message */
+	msg = &ipc->msg;
+
+	/* attach message data */
+	msg->msg_data = msg_data;
+	msg->msg_size = msg_bytes;
+
+	msg->reply_size = reply_bytes;
+	msg->reply_error = 0;
+
+	sdev->msg = msg;
+
+	ret = snd_sof_dsp_send_msg(sdev, msg);
+	/* Next reply that we receive will be related to this message */
+	if (!ret)
+		msg->ipc_complete = false;
+
+	spin_unlock_irq(&sdev->ipc_lock);
+
+	return ret;
+}
+
+/* send IPC message from host to DSP */
+int sof_ipc_tx_message(struct snd_sof_ipc *ipc, void *msg_data, size_t msg_bytes,
+		       void *reply_data, size_t reply_bytes)
+{
+	if (msg_bytes > ipc->max_payload_size ||
+	    reply_bytes > ipc->max_payload_size)
+		return -ENOBUFS;
+
+	return ipc->ops->tx_msg(ipc->sdev, msg_data, msg_bytes, reply_data,
+				reply_bytes, false);
+}
+EXPORT_SYMBOL(sof_ipc_tx_message);
+
+/* IPC set or get data from host to DSP */
+int sof_ipc_set_get_data(struct snd_sof_ipc *ipc, void *msg_data,
+			 size_t msg_bytes, bool set)
+{
+	return ipc->ops->set_get_data(ipc->sdev, msg_data, msg_bytes, set);
+}
+EXPORT_SYMBOL(sof_ipc_set_get_data);
+
+/*
+ * send IPC message from host to DSP without modifying the DSP state.
+ * This will be used for IPC's that can be handled by the DSP
+ * even in a low-power D0 substate.
+ */
+int sof_ipc_tx_message_no_pm(struct snd_sof_ipc *ipc, void *msg_data, size_t msg_bytes,
+			     void *reply_data, size_t reply_bytes)
+{
+	if (msg_bytes > ipc->max_payload_size ||
+	    reply_bytes > ipc->max_payload_size)
+		return -ENOBUFS;
+
+	return ipc->ops->tx_msg(ipc->sdev, msg_data, msg_bytes, reply_data,
+				reply_bytes, true);
+}
+EXPORT_SYMBOL(sof_ipc_tx_message_no_pm);
+
+/* Generic helper function to retrieve the reply */
+void snd_sof_ipc_get_reply(struct snd_sof_dev *sdev)
+{
+	/*
+	 * Sometimes, there is unexpected reply ipc arriving. The reply
+	 * ipc belongs to none of the ipcs sent from driver.
+	 * In this case, the driver must ignore the ipc.
+	 */
+	if (!sdev->msg) {
+		dev_warn(sdev->dev, "unexpected ipc interrupt raised!\n");
+		return;
+	}
+
+	sdev->msg->reply_error = sdev->ipc->ops->get_reply(sdev);
+}
+EXPORT_SYMBOL(snd_sof_ipc_get_reply);
+
+/* handle reply message from DSP */
+void snd_sof_ipc_reply(struct snd_sof_dev *sdev, u32 msg_id)
+{
+	struct snd_sof_ipc_msg *msg = &sdev->ipc->msg;
+
+	if (msg->ipc_complete) {
+		dev_dbg(sdev->dev,
+			"no reply expected, received 0x%x, will be ignored",
+			msg_id);
+		return;
+	}
+
+	/* wake up and return the error if we have waiters on this message ? */
+	msg->ipc_complete = true;
+	wake_up(&msg->waitq);
+}
+EXPORT_SYMBOL(snd_sof_ipc_reply);
+
+struct snd_sof_ipc *snd_sof_ipc_init(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_ipc *ipc;
+	struct snd_sof_ipc_msg *msg;
+	const struct sof_ipc_ops *ops;
+
+	ipc = devm_kzalloc(sdev->dev, sizeof(*ipc), GFP_KERNEL);
+	if (!ipc)
+		return NULL;
+
+	mutex_init(&ipc->tx_mutex);
+	ipc->sdev = sdev;
+	msg = &ipc->msg;
+
+	/* indicate that we aren't sending a message ATM */
+	msg->ipc_complete = true;
+
+	init_waitqueue_head(&msg->waitq);
+
+	switch (sdev->pdata->ipc_type) {
+#if defined(CONFIG_SND_SOC_SOF_IPC3)
+	case SOF_IPC:
+		ops = &ipc3_ops;
+		break;
+#endif
+#if defined(CONFIG_SND_SOC_SOF_INTEL_IPC4)
+	case SOF_INTEL_IPC4:
+		ops = &ipc4_ops;
+		break;
+#endif
+	default:
+		dev_err(sdev->dev, "Not supported IPC version: %d\n",
+			sdev->pdata->ipc_type);
+		return NULL;
+	}
+
+	/* check for mandatory ops */
+	if (!ops->tx_msg || !ops->rx_msg || !ops->set_get_data || !ops->get_reply) {
+		dev_err(sdev->dev, "Missing IPC message handling ops\n");
+		return NULL;
+	}
+
+	if (!ops->fw_loader || !ops->fw_loader->validate ||
+	    !ops->fw_loader->parse_ext_manifest) {
+		dev_err(sdev->dev, "Missing IPC firmware loading ops\n");
+		return NULL;
+	}
+
+	if (!ops->pcm) {
+		dev_err(sdev->dev, "Missing IPC PCM ops\n");
+		return NULL;
+	}
+
+	if (!ops->tplg || !ops->tplg->widget || !ops->tplg->control) {
+		dev_err(sdev->dev, "Missing IPC topology ops\n");
+		return NULL;
+	}
+
+	if (ops->fw_tracing && (!ops->fw_tracing->init || !ops->fw_tracing->suspend ||
+				!ops->fw_tracing->resume)) {
+		dev_err(sdev->dev, "Missing firmware tracing ops\n");
+		return NULL;
+	}
+
+	if (ops->init && ops->init(sdev))
+		return NULL;
+
+	ipc->ops = ops;
+
+	return ipc;
+}
+EXPORT_SYMBOL(snd_sof_ipc_init);
+
+void snd_sof_ipc_free(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_ipc *ipc = sdev->ipc;
+
+	if (!ipc)
+		return;
+
+	/* disable sending of ipc's */
+	mutex_lock(&ipc->tx_mutex);
+	ipc->disable_ipc_tx = true;
+	mutex_unlock(&ipc->tx_mutex);
+
+	if (ipc->ops->exit)
+		ipc->ops->exit(sdev);
+}
+EXPORT_SYMBOL(snd_sof_ipc_free);