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, 828 insertions, 0 deletions

diff --git a/sound/soc/soc-topology-test.c b/sound/soc/soc-topology-test.c
new file mode 100644
index 000000000..2cd3540ce
--- /dev/null
+++ b/sound/soc/soc-topology-test.c
@@ -0,0 +1,828 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * soc-topology-test.c  --  ALSA SoC Topology Kernel Unit Tests
+ *
+ * Copyright(c) 2021 Intel Corporation. All rights reserved.
+ */
+
+#include <linux/firmware.h>
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/soc-topology.h>
+#include <kunit/test.h>
+
+/* ===== HELPER FUNCTIONS =================================================== */
+
+/*
+ * snd_soc_component needs device to operate on (primarily for prints), create
+ * fake one, as we don't register with PCI or anything else
+ * device_driver name is used in some of the prints (fmt_single_name) so
+ * we also mock up minimal one
+ */
+static struct device *test_dev;
+
+static struct device_driver test_drv = {
+	.name = "sound-soc-topology-test-driver",
+};
+
+static int snd_soc_tplg_test_init(struct kunit *test)
+{
+	test_dev = root_device_register("sound-soc-topology-test");
+	test_dev = get_device(test_dev);
+	if (!test_dev)
+		return -ENODEV;
+
+	test_dev->driver = &test_drv;
+
+	return 0;
+}
+
+static void snd_soc_tplg_test_exit(struct kunit *test)
+{
+	put_device(test_dev);
+	root_device_unregister(test_dev);
+}
+
+/*
+ * helper struct we use when registering component, as we load topology during
+ * component probe, we need to pass struct kunit somehow to probe function, so
+ * we can report test result
+ */
+struct kunit_soc_component {
+	struct kunit *kunit;
+	int expect; /* what result we expect when loading topology */
+	struct snd_soc_component comp;
+	struct snd_soc_card card;
+	struct firmware fw;
+};
+
+static int d_probe(struct snd_soc_component *component)
+{
+	struct kunit_soc_component *kunit_comp =
+			container_of(component, struct kunit_soc_component, comp);
+	int ret;
+
+	ret = snd_soc_tplg_component_load(component, NULL, &kunit_comp->fw);
+	KUNIT_EXPECT_EQ_MSG(kunit_comp->kunit, kunit_comp->expect, ret,
+			    "Failed topology load");
+
+	return 0;
+}
+
+static void d_remove(struct snd_soc_component *component)
+{
+	struct kunit_soc_component *kunit_comp =
+			container_of(component, struct kunit_soc_component, comp);
+	int ret;
+
+	ret = snd_soc_tplg_component_remove(component);
+	KUNIT_EXPECT_EQ(kunit_comp->kunit, 0, ret);
+}
+
+/*
+ * ASoC minimal boiler plate
+ */
+SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY()));
+
+SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("sound-soc-topology-test")));
+
+static struct snd_soc_dai_link kunit_dai_links[] = {
+	{
+		.name = "KUNIT Audio Port",
+		.id = 0,
+		.stream_name = "Audio Playback/Capture",
+		.nonatomic = 1,
+		.dynamic = 1,
+		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		SND_SOC_DAILINK_REG(dummy, dummy, platform),
+	},
+};
+
+static const struct snd_soc_component_driver test_component = {
+	.name = "sound-soc-topology-test",
+	.probe = d_probe,
+	.remove = d_remove,
+};
+
+/* ===== TOPOLOGY TEMPLATES ================================================= */
+
+// Structural representation of topology which can be generated with:
+// $ touch empty
+// $ alsatplg -c empty -o empty.tplg
+// $ xxd -i empty.tplg
+
+struct tplg_tmpl_001 {
+	struct snd_soc_tplg_hdr header;
+	struct snd_soc_tplg_manifest manifest;
+} __packed;
+
+static struct tplg_tmpl_001 tplg_tmpl_empty = {
+	.header = {
+		.magic = cpu_to_le32(SND_SOC_TPLG_MAGIC),
+		.abi = cpu_to_le32(5),
+		.version = 0,
+		.type = cpu_to_le32(SND_SOC_TPLG_TYPE_MANIFEST),
+		.size = cpu_to_le32(sizeof(struct snd_soc_tplg_hdr)),
+		.vendor_type = 0,
+		.payload_size = cpu_to_le32(sizeof(struct snd_soc_tplg_manifest)),
+		.index = 0,
+		.count = cpu_to_le32(1),
+	},
+
+	.manifest = {
+		.size = cpu_to_le32(sizeof(struct snd_soc_tplg_manifest)),
+		/* rest of fields is 0 */
+	},
+};
+
+// Structural representation of topology containing SectionPCM
+
+struct tplg_tmpl_002 {
+	struct snd_soc_tplg_hdr header;
+	struct snd_soc_tplg_manifest manifest;
+	struct snd_soc_tplg_hdr pcm_header;
+	struct snd_soc_tplg_pcm pcm;
+} __packed;
+
+static struct tplg_tmpl_002 tplg_tmpl_with_pcm = {
+	.header = {
+		.magic = cpu_to_le32(SND_SOC_TPLG_MAGIC),
+		.abi = cpu_to_le32(5),
+		.version = 0,
+		.type = cpu_to_le32(SND_SOC_TPLG_TYPE_MANIFEST),
+		.size = cpu_to_le32(sizeof(struct snd_soc_tplg_hdr)),
+		.vendor_type = 0,
+		.payload_size = cpu_to_le32(sizeof(struct snd_soc_tplg_manifest)),
+		.index = 0,
+		.count = cpu_to_le32(1),
+	},
+	.manifest = {
+		.size = cpu_to_le32(sizeof(struct snd_soc_tplg_manifest)),
+		.pcm_elems = cpu_to_le32(1),
+		/* rest of fields is 0 */
+	},
+	.pcm_header = {
+		.magic = cpu_to_le32(SND_SOC_TPLG_MAGIC),
+		.abi = cpu_to_le32(5),
+		.version = 0,
+		.type = cpu_to_le32(SND_SOC_TPLG_TYPE_PCM),
+		.size = cpu_to_le32(sizeof(struct snd_soc_tplg_hdr)),
+		.vendor_type = 0,
+		.payload_size = cpu_to_le32(sizeof(struct snd_soc_tplg_pcm)),
+		.index = 0,
+		.count = cpu_to_le32(1),
+	},
+	.pcm = {
+		.size = cpu_to_le32(sizeof(struct snd_soc_tplg_pcm)),
+		.pcm_name = "KUNIT Audio",
+		.dai_name = "kunit-audio-dai",
+		.pcm_id = 0,
+		.dai_id = 0,
+		.playback = cpu_to_le32(1),
+		.capture = cpu_to_le32(1),
+		.compress = 0,
+		.stream = {
+			[0] = {
+				.channels = cpu_to_le32(2),
+			},
+			[1] = {
+				.channels = cpu_to_le32(2),
+			},
+		},
+		.num_streams = 0,
+		.caps = {
+			[0] = {
+				.name = "kunit-audio-playback",
+				.channels_min = cpu_to_le32(2),
+				.channels_max = cpu_to_le32(2),
+			},
+			[1] = {
+				.name = "kunit-audio-capture",
+				.channels_min = cpu_to_le32(2),
+				.channels_max = cpu_to_le32(2),
+			},
+		},
+		.flag_mask = 0,
+		.flags = 0,
+		.priv = { 0 },
+	},
+};
+
+/* ===== TEST CASES ========================================================= */
+
+// TEST CASE
+// Test passing NULL component as parameter to snd_soc_tplg_component_load
+
+/*
+ * need to override generic probe function with one using NULL when calling
+ * topology load during component initialization, we don't need .remove
+ * handler as load should fail
+ */
+static int d_probe_null_comp(struct snd_soc_component *component)
+{
+	struct kunit_soc_component *kunit_comp =
+			container_of(component, struct kunit_soc_component, comp);
+	int ret;
+
+	/* instead of passing component pointer as first argument, pass NULL here */
+	ret = snd_soc_tplg_component_load(NULL, NULL, &kunit_comp->fw);
+	KUNIT_EXPECT_EQ_MSG(kunit_comp->kunit, kunit_comp->expect, ret,
+			    "Failed topology load");
+
+	return 0;
+}
+
+static const struct snd_soc_component_driver test_component_null_comp = {
+	.name = "sound-soc-topology-test",
+	.probe = d_probe_null_comp,
+};
+
+static void snd_soc_tplg_test_load_with_null_comp(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = -EINVAL; /* expect failure */
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component_null_comp, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+	snd_soc_unregister_component(test_dev);
+}
+
+// TEST CASE
+// Test passing NULL ops as parameter to snd_soc_tplg_component_load
+
+/*
+ * NULL ops is default case, we pass empty topology (fw), so we don't have
+ * anything to parse and just do nothing, which results in return 0; from
+ * calling soc_tplg_dapm_complete in soc_tplg_process_headers
+ */
+static void snd_soc_tplg_test_load_with_null_ops(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = 0; /* expect success */
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+
+	snd_soc_unregister_component(test_dev);
+}
+
+// TEST CASE
+// Test passing NULL fw as parameter to snd_soc_tplg_component_load
+
+/*
+ * need to override generic probe function with one using NULL pointer to fw
+ * when calling topology load during component initialization, we don't need
+ * .remove handler as load should fail
+ */
+static int d_probe_null_fw(struct snd_soc_component *component)
+{
+	struct kunit_soc_component *kunit_comp =
+			container_of(component, struct kunit_soc_component, comp);
+	int ret;
+
+	/* instead of passing fw pointer as third argument, pass NULL here */
+	ret = snd_soc_tplg_component_load(component, NULL, NULL);
+	KUNIT_EXPECT_EQ_MSG(kunit_comp->kunit, kunit_comp->expect, ret,
+			    "Failed topology load");
+
+	return 0;
+}
+
+static const struct snd_soc_component_driver test_component_null_fw = {
+	.name = "sound-soc-topology-test",
+	.probe = d_probe_null_fw,
+};
+
+static void snd_soc_tplg_test_load_with_null_fw(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = -EINVAL; /* expect failure */
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component_null_fw, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+
+	snd_soc_unregister_component(test_dev);
+}
+
+// TEST CASE
+// Test passing "empty" topology file
+static void snd_soc_tplg_test_load_empty_tplg(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	struct tplg_tmpl_001 *data;
+	int size;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = 0; /* expect success */
+
+	size = sizeof(tplg_tmpl_empty);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_empty, sizeof(tplg_tmpl_empty));
+
+	kunit_comp->fw.data = (u8 *)data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+
+	snd_soc_unregister_component(test_dev);
+}
+
+// TEST CASE
+// Test "empty" topology file, but with bad "magic"
+// In theory we could loop through all possible bad values, but it takes too
+// long, so just use SND_SOC_TPLG_MAGIC + 1
+static void snd_soc_tplg_test_load_empty_tplg_bad_magic(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	struct tplg_tmpl_001 *data;
+	int size;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = -EINVAL; /* expect failure */
+
+	size = sizeof(tplg_tmpl_empty);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_empty, sizeof(tplg_tmpl_empty));
+	/*
+	 * override abi
+	 * any value != magic number is wrong
+	 */
+	data->header.magic = cpu_to_le32(SND_SOC_TPLG_MAGIC + 1);
+
+	kunit_comp->fw.data = (u8 *)data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+
+	snd_soc_unregister_component(test_dev);
+}
+
+// TEST CASE
+// Test "empty" topology file, but with bad "abi"
+// In theory we could loop through all possible bad values, but it takes too
+// long, so just use SND_SOC_TPLG_ABI_VERSION + 1
+static void snd_soc_tplg_test_load_empty_tplg_bad_abi(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	struct tplg_tmpl_001 *data;
+	int size;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = -EINVAL; /* expect failure */
+
+	size = sizeof(tplg_tmpl_empty);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_empty, sizeof(tplg_tmpl_empty));
+	/*
+	 * override abi
+	 * any value != accepted range is wrong
+	 */
+	data->header.abi = cpu_to_le32(SND_SOC_TPLG_ABI_VERSION + 1);
+
+	kunit_comp->fw.data = (u8 *)data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+
+	snd_soc_unregister_component(test_dev);
+}
+
+// TEST CASE
+// Test "empty" topology file, but with bad "size"
+// In theory we could loop through all possible bad values, but it takes too
+// long, so just use sizeof(struct snd_soc_tplg_hdr) + 1
+static void snd_soc_tplg_test_load_empty_tplg_bad_size(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	struct tplg_tmpl_001 *data;
+	int size;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = -EINVAL; /* expect failure */
+
+	size = sizeof(tplg_tmpl_empty);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_empty, sizeof(tplg_tmpl_empty));
+	/*
+	 * override size
+	 * any value != struct size is wrong
+	 */
+	data->header.size = cpu_to_le32(sizeof(struct snd_soc_tplg_hdr) + 1);
+
+	kunit_comp->fw.data = (u8 *)data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+
+	snd_soc_unregister_component(test_dev);
+}
+
+// TEST CASE
+// Test "empty" topology file, but with bad "payload_size"
+// In theory we could loop through all possible bad values, but it takes too
+// long, so just use the known wrong one
+static void snd_soc_tplg_test_load_empty_tplg_bad_payload_size(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	struct tplg_tmpl_001 *data;
+	int size;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = -EINVAL; /* expect failure */
+
+	size = sizeof(tplg_tmpl_empty);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_empty, sizeof(tplg_tmpl_empty));
+	/*
+	 * override payload size
+	 * there is only explicit check for 0, so check with it, other values
+	 * are handled by just not reading behind EOF
+	 */
+	data->header.payload_size = 0;
+
+	kunit_comp->fw.data = (u8 *)data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	/* cleanup */
+	snd_soc_unregister_component(test_dev);
+
+	snd_soc_unregister_card(&kunit_comp->card);
+}
+
+// TEST CASE
+// Test passing topology file with PCM definition
+static void snd_soc_tplg_test_load_pcm_tplg(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	u8 *data;
+	int size;
+	int ret;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = 0; /* expect success */
+
+	size = sizeof(tplg_tmpl_with_pcm);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_with_pcm, sizeof(tplg_tmpl_with_pcm));
+
+	kunit_comp->fw.data = data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	snd_soc_unregister_component(test_dev);
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+}
+
+// TEST CASE
+// Test passing topology file with PCM definition
+// with component reload
+static void snd_soc_tplg_test_load_pcm_tplg_reload_comp(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	u8 *data;
+	int size;
+	int ret;
+	int i;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = 0; /* expect success */
+
+	size = sizeof(tplg_tmpl_with_pcm);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_with_pcm, sizeof(tplg_tmpl_with_pcm));
+
+	kunit_comp->fw.data = data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_register_card(&kunit_comp->card);
+	if (ret != 0 && ret != -EPROBE_DEFER)
+		KUNIT_FAIL(test, "Failed to register card");
+
+	for (i = 0; i < 100; i++) {
+		ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+		KUNIT_EXPECT_EQ(test, 0, ret);
+
+		ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+		KUNIT_EXPECT_EQ(test, 0, ret);
+
+		snd_soc_unregister_component(test_dev);
+	}
+
+	/* cleanup */
+	snd_soc_unregister_card(&kunit_comp->card);
+}
+
+// TEST CASE
+// Test passing topology file with PCM definition
+// with card reload
+static void snd_soc_tplg_test_load_pcm_tplg_reload_card(struct kunit *test)
+{
+	struct kunit_soc_component *kunit_comp;
+	u8 *data;
+	int size;
+	int ret;
+	int i;
+
+	/* prepare */
+	kunit_comp = kunit_kzalloc(test, sizeof(*kunit_comp), GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, kunit_comp);
+	kunit_comp->kunit = test;
+	kunit_comp->expect = 0; /* expect success */
+
+	size = sizeof(tplg_tmpl_with_pcm);
+	data = kunit_kzalloc(kunit_comp->kunit, size, GFP_KERNEL);
+	KUNIT_EXPECT_NOT_ERR_OR_NULL(kunit_comp->kunit, data);
+
+	memcpy(data, &tplg_tmpl_with_pcm, sizeof(tplg_tmpl_with_pcm));
+
+	kunit_comp->fw.data = data;
+	kunit_comp->fw.size = size;
+
+	kunit_comp->card.dev = test_dev,
+	kunit_comp->card.name = "kunit-card",
+	kunit_comp->card.owner = THIS_MODULE,
+	kunit_comp->card.dai_link = kunit_dai_links,
+	kunit_comp->card.num_links = ARRAY_SIZE(kunit_dai_links),
+	kunit_comp->card.fully_routed = true,
+
+	/* run test */
+	ret = snd_soc_component_initialize(&kunit_comp->comp, &test_component, test_dev);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	ret = snd_soc_add_component(&kunit_comp->comp, NULL, 0);
+	KUNIT_EXPECT_EQ(test, 0, ret);
+
+	for (i = 0; i < 100; i++) {
+		ret = snd_soc_register_card(&kunit_comp->card);
+		if (ret != 0 && ret != -EPROBE_DEFER)
+			KUNIT_FAIL(test, "Failed to register card");
+
+		snd_soc_unregister_card(&kunit_comp->card);
+	}
+
+	/* cleanup */
+	snd_soc_unregister_component(test_dev);
+}
+
+/* ===== KUNIT MODULE DEFINITIONS =========================================== */
+
+static struct kunit_case snd_soc_tplg_test_cases[] = {
+	KUNIT_CASE(snd_soc_tplg_test_load_with_null_comp),
+	KUNIT_CASE(snd_soc_tplg_test_load_with_null_ops),
+	KUNIT_CASE(snd_soc_tplg_test_load_with_null_fw),
+	KUNIT_CASE(snd_soc_tplg_test_load_empty_tplg),
+	KUNIT_CASE(snd_soc_tplg_test_load_empty_tplg_bad_magic),
+	KUNIT_CASE(snd_soc_tplg_test_load_empty_tplg_bad_abi),
+	KUNIT_CASE(snd_soc_tplg_test_load_empty_tplg_bad_size),
+	KUNIT_CASE(snd_soc_tplg_test_load_empty_tplg_bad_payload_size),
+	KUNIT_CASE(snd_soc_tplg_test_load_pcm_tplg),
+	KUNIT_CASE(snd_soc_tplg_test_load_pcm_tplg_reload_comp),
+	KUNIT_CASE(snd_soc_tplg_test_load_pcm_tplg_reload_card),
+	{}
+};
+
+static struct kunit_suite snd_soc_tplg_test_suite = {
+	.name = "snd_soc_tplg_test",
+	.init = snd_soc_tplg_test_init,
+	.exit = snd_soc_tplg_test_exit,
+	.test_cases = snd_soc_tplg_test_cases,
+};
+
+kunit_test_suites(&snd_soc_tplg_test_suite);
+
+MODULE_LICENSE("GPL");