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, 451 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gt/selftest_context.c b/drivers/gpu/drm/i915/gt/selftest_context.c
new file mode 100644
index 000000000..76fbae358
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/selftest_context.c
@@ -0,0 +1,451 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "i915_selftest.h"
+#include "intel_engine_heartbeat.h"
+#include "intel_engine_pm.h"
+#include "intel_gt.h"
+
+#include "gem/selftests/mock_context.h"
+#include "selftests/igt_flush_test.h"
+#include "selftests/mock_drm.h"
+
+static int request_sync(struct i915_request *rq)
+{
+	struct intel_timeline *tl = i915_request_timeline(rq);
+	long timeout;
+	int err = 0;
+
+	intel_timeline_get(tl);
+	i915_request_get(rq);
+
+	/* Opencode i915_request_add() so we can keep the timeline locked. */
+	__i915_request_commit(rq);
+	rq->sched.attr.priority = I915_PRIORITY_BARRIER;
+	__i915_request_queue_bh(rq);
+
+	timeout = i915_request_wait(rq, 0, HZ / 10);
+	if (timeout < 0)
+		err = timeout;
+	else
+		i915_request_retire_upto(rq);
+
+	lockdep_unpin_lock(&tl->mutex, rq->cookie);
+	mutex_unlock(&tl->mutex);
+
+	i915_request_put(rq);
+	intel_timeline_put(tl);
+
+	return err;
+}
+
+static int context_sync(struct intel_context *ce)
+{
+	struct intel_timeline *tl = ce->timeline;
+	int err = 0;
+
+	mutex_lock(&tl->mutex);
+	do {
+		struct i915_request *rq;
+		long timeout;
+
+		if (list_empty(&tl->requests))
+			break;
+
+		rq = list_last_entry(&tl->requests, typeof(*rq), link);
+		i915_request_get(rq);
+
+		timeout = i915_request_wait(rq, 0, HZ / 10);
+		if (timeout < 0)
+			err = timeout;
+		else
+			i915_request_retire_upto(rq);
+
+		i915_request_put(rq);
+	} while (!err);
+	mutex_unlock(&tl->mutex);
+
+	/* Wait for all barriers to complete (remote CPU) before we check */
+	i915_active_unlock_wait(&ce->active);
+	return err;
+}
+
+static int __live_context_size(struct intel_engine_cs *engine)
+{
+	struct intel_context *ce;
+	struct i915_request *rq;
+	void *vaddr;
+	int err;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce))
+		return PTR_ERR(ce);
+
+	err = intel_context_pin(ce);
+	if (err)
+		goto err;
+
+	vaddr = i915_gem_object_pin_map_unlocked(ce->state->obj,
+						 i915_coherent_map_type(engine->i915,
+									ce->state->obj, false));
+	if (IS_ERR(vaddr)) {
+		err = PTR_ERR(vaddr);
+		intel_context_unpin(ce);
+		goto err;
+	}
+
+	/*
+	 * Note that execlists also applies a redzone which it checks on
+	 * context unpin when debugging. We are using the same location
+	 * and same poison value so that our checks overlap. Despite the
+	 * redundancy, we want to keep this little selftest so that we
+	 * get coverage of any and all submission backends, and we can
+	 * always extend this test to ensure we trick the HW into a
+	 * compromising position wrt to the various sections that need
+	 * to be written into the context state.
+	 *
+	 * TLDR; this overlaps with the execlists redzone.
+	 */
+	vaddr += engine->context_size - I915_GTT_PAGE_SIZE;
+	memset(vaddr, POISON_INUSE, I915_GTT_PAGE_SIZE);
+
+	rq = intel_context_create_request(ce);
+	intel_context_unpin(ce);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto err_unpin;
+	}
+
+	err = request_sync(rq);
+	if (err)
+		goto err_unpin;
+
+	/* Force the context switch */
+	rq = intel_engine_create_kernel_request(engine);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto err_unpin;
+	}
+	err = request_sync(rq);
+	if (err)
+		goto err_unpin;
+
+	if (memchr_inv(vaddr, POISON_INUSE, I915_GTT_PAGE_SIZE)) {
+		pr_err("%s context overwrote trailing red-zone!", engine->name);
+		err = -EINVAL;
+	}
+
+err_unpin:
+	i915_gem_object_unpin_map(ce->state->obj);
+err:
+	intel_context_put(ce);
+	return err;
+}
+
+static int live_context_size(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	int err = 0;
+
+	/*
+	 * Check that our context sizes are correct by seeing if the
+	 * HW tries to write past the end of one.
+	 */
+
+	for_each_engine(engine, gt, id) {
+		struct file *saved;
+
+		if (!engine->context_size)
+			continue;
+
+		intel_engine_pm_get(engine);
+
+		/*
+		 * Hide the old default state -- we lie about the context size
+		 * and get confused when the default state is smaller than
+		 * expected. For our do nothing request, inheriting the
+		 * active state is sufficient, we are only checking that we
+		 * don't use more than we planned.
+		 */
+		saved = fetch_and_zero(&engine->default_state);
+
+		/* Overlaps with the execlists redzone */
+		engine->context_size += I915_GTT_PAGE_SIZE;
+
+		err = __live_context_size(engine);
+
+		engine->context_size -= I915_GTT_PAGE_SIZE;
+
+		engine->default_state = saved;
+
+		intel_engine_pm_put(engine);
+
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+static int __live_active_context(struct intel_engine_cs *engine)
+{
+	unsigned long saved_heartbeat;
+	struct intel_context *ce;
+	int pass;
+	int err;
+
+	/*
+	 * We keep active contexts alive until after a subsequent context
+	 * switch as the final write from the context-save will be after
+	 * we retire the final request. We track when we unpin the context,
+	 * under the presumption that the final pin is from the last request,
+	 * and instead of immediately unpinning the context, we add a task
+	 * to unpin the context from the next idle-barrier.
+	 *
+	 * This test makes sure that the context is kept alive until a
+	 * subsequent idle-barrier (emitted when the engine wakeref hits 0
+	 * with no more outstanding requests).
+	 *
+	 * In GuC submission mode we don't use idle barriers and we instead
+	 * get a message from the GuC to signal that it is safe to unpin the
+	 * context from memory.
+	 */
+	if (intel_engine_uses_guc(engine))
+		return 0;
+
+	if (intel_engine_pm_is_awake(engine)) {
+		pr_err("%s is awake before starting %s!\n",
+		       engine->name, __func__);
+		return -EINVAL;
+	}
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce))
+		return PTR_ERR(ce);
+
+	saved_heartbeat = engine->props.heartbeat_interval_ms;
+	engine->props.heartbeat_interval_ms = 0;
+
+	for (pass = 0; pass <= 2; pass++) {
+		struct i915_request *rq;
+
+		intel_engine_pm_get(engine);
+
+		rq = intel_context_create_request(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			goto out_engine;
+		}
+
+		err = request_sync(rq);
+		if (err)
+			goto out_engine;
+
+		/* Context will be kept active until after an idle-barrier. */
+		if (i915_active_is_idle(&ce->active)) {
+			pr_err("context is not active; expected idle-barrier (%s pass %d)\n",
+			       engine->name, pass);
+			err = -EINVAL;
+			goto out_engine;
+		}
+
+		if (!intel_engine_pm_is_awake(engine)) {
+			pr_err("%s is asleep before idle-barrier\n",
+			       engine->name);
+			err = -EINVAL;
+			goto out_engine;
+		}
+
+out_engine:
+		intel_engine_pm_put(engine);
+		if (err)
+			goto err;
+	}
+
+	/* Now make sure our idle-barriers are flushed */
+	err = intel_engine_flush_barriers(engine);
+	if (err)
+		goto err;
+
+	/* Wait for the barrier and in the process wait for engine to park */
+	err = context_sync(engine->kernel_context);
+	if (err)
+		goto err;
+
+	if (!i915_active_is_idle(&ce->active)) {
+		pr_err("context is still active!");
+		err = -EINVAL;
+	}
+
+	intel_engine_pm_flush(engine);
+
+	if (intel_engine_pm_is_awake(engine)) {
+		struct drm_printer p = drm_debug_printer(__func__);
+
+		intel_engine_dump(engine, &p,
+				  "%s is still awake:%d after idle-barriers\n",
+				  engine->name,
+				  atomic_read(&engine->wakeref.count));
+		GEM_TRACE_DUMP();
+
+		err = -EINVAL;
+		goto err;
+	}
+
+err:
+	engine->props.heartbeat_interval_ms = saved_heartbeat;
+	intel_context_put(ce);
+	return err;
+}
+
+static int live_active_context(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	int err = 0;
+
+	for_each_engine(engine, gt, id) {
+		err = __live_active_context(engine);
+		if (err)
+			break;
+
+		err = igt_flush_test(gt->i915);
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+static int __remote_sync(struct intel_context *ce, struct intel_context *remote)
+{
+	struct i915_request *rq;
+	int err;
+
+	err = intel_context_pin(remote);
+	if (err)
+		return err;
+
+	rq = intel_context_create_request(ce);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto unpin;
+	}
+
+	err = intel_context_prepare_remote_request(remote, rq);
+	if (err) {
+		i915_request_add(rq);
+		goto unpin;
+	}
+
+	err = request_sync(rq);
+
+unpin:
+	intel_context_unpin(remote);
+	return err;
+}
+
+static int __live_remote_context(struct intel_engine_cs *engine)
+{
+	struct intel_context *local, *remote;
+	unsigned long saved_heartbeat;
+	int pass;
+	int err;
+
+	/*
+	 * Check that our idle barriers do not interfere with normal
+	 * activity tracking. In particular, check that operating
+	 * on the context image remotely (intel_context_prepare_remote_request),
+	 * which inserts foreign fences into intel_context.active, does not
+	 * clobber the idle-barrier.
+	 *
+	 * In GuC submission mode we don't use idle barriers.
+	 */
+	if (intel_engine_uses_guc(engine))
+		return 0;
+
+	if (intel_engine_pm_is_awake(engine)) {
+		pr_err("%s is awake before starting %s!\n",
+		       engine->name, __func__);
+		return -EINVAL;
+	}
+
+	remote = intel_context_create(engine);
+	if (IS_ERR(remote))
+		return PTR_ERR(remote);
+
+	local = intel_context_create(engine);
+	if (IS_ERR(local)) {
+		err = PTR_ERR(local);
+		goto err_remote;
+	}
+
+	saved_heartbeat = engine->props.heartbeat_interval_ms;
+	engine->props.heartbeat_interval_ms = 0;
+	intel_engine_pm_get(engine);
+
+	for (pass = 0; pass <= 2; pass++) {
+		err = __remote_sync(local, remote);
+		if (err)
+			break;
+
+		err = __remote_sync(engine->kernel_context, remote);
+		if (err)
+			break;
+
+		if (i915_active_is_idle(&remote->active)) {
+			pr_err("remote context is not active; expected idle-barrier (%s pass %d)\n",
+			       engine->name, pass);
+			err = -EINVAL;
+			break;
+		}
+	}
+
+	intel_engine_pm_put(engine);
+	engine->props.heartbeat_interval_ms = saved_heartbeat;
+
+	intel_context_put(local);
+err_remote:
+	intel_context_put(remote);
+	return err;
+}
+
+static int live_remote_context(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	int err = 0;
+
+	for_each_engine(engine, gt, id) {
+		err = __live_remote_context(engine);
+		if (err)
+			break;
+
+		err = igt_flush_test(gt->i915);
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+int intel_context_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(live_context_size),
+		SUBTEST(live_active_context),
+		SUBTEST(live_remote_context),
+	};
+	struct intel_gt *gt = to_gt(i915);
+
+	if (intel_gt_is_wedged(gt))
+		return 0;
+
+	return intel_gt_live_subtests(tests, gt);
+}