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, 363 insertions, 0 deletions

diff --git a/drivers/md/md-faulty.c b/drivers/md/md-faulty.c
new file mode 100644
index 000000000..50ad81897
--- /dev/null
+++ b/drivers/md/md-faulty.c
@@ -0,0 +1,363 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * faulty.c : Multiple Devices driver for Linux
+ *
+ * Copyright (C) 2004 Neil Brown
+ *
+ * fautly-device-simulator personality for md
+ */
+
+
+/*
+ * The "faulty" personality causes some requests to fail.
+ *
+ * Possible failure modes are:
+ *   reads fail "randomly" but succeed on retry
+ *   writes fail "randomly" but succeed on retry
+ *   reads for some address fail and then persist until a write
+ *   reads for some address fail and then persist irrespective of write
+ *   writes for some address fail and persist
+ *   all writes fail
+ *
+ * Different modes can be active at a time, but only
+ * one can be set at array creation.  Others can be added later.
+ * A mode can be one-shot or recurrent with the recurrence being
+ * once in every N requests.
+ * The bottom 5 bits of the "layout" indicate the mode.  The
+ * remainder indicate a period, or 0 for one-shot.
+ *
+ * There is an implementation limit on the number of concurrently
+ * persisting-faulty blocks. When a new fault is requested that would
+ * exceed the limit, it is ignored.
+ * All current faults can be clear using a layout of "0".
+ *
+ * Requests are always sent to the device.  If they are to fail,
+ * we clone the bio and insert a new b_end_io into the chain.
+ */
+
+#define	WriteTransient	0
+#define	ReadTransient	1
+#define	WritePersistent	2
+#define	ReadPersistent	3
+#define	WriteAll	4 /* doesn't go to device */
+#define	ReadFixable	5
+#define	Modes	6
+
+#define	ClearErrors	31
+#define	ClearFaults	30
+
+#define AllPersist	100 /* internal use only */
+#define	NoPersist	101
+
+#define	ModeMask	0x1f
+#define	ModeShift	5
+
+#define MaxFault	50
+#include <linux/blkdev.h>
+#include <linux/module.h>
+#include <linux/raid/md_u.h>
+#include <linux/slab.h>
+#include "md.h"
+#include <linux/seq_file.h>
+
+
+static void faulty_fail(struct bio *bio)
+{
+	struct bio *b = bio->bi_private;
+
+	b->bi_iter.bi_size = bio->bi_iter.bi_size;
+	b->bi_iter.bi_sector = bio->bi_iter.bi_sector;
+
+	bio_put(bio);
+
+	bio_io_error(b);
+}
+
+struct faulty_conf {
+	int period[Modes];
+	atomic_t counters[Modes];
+	sector_t faults[MaxFault];
+	int	modes[MaxFault];
+	int nfaults;
+	struct md_rdev *rdev;
+};
+
+static int check_mode(struct faulty_conf *conf, int mode)
+{
+	if (conf->period[mode] == 0 &&
+	    atomic_read(&conf->counters[mode]) <= 0)
+		return 0; /* no failure, no decrement */
+
+
+	if (atomic_dec_and_test(&conf->counters[mode])) {
+		if (conf->period[mode])
+			atomic_set(&conf->counters[mode], conf->period[mode]);
+		return 1;
+	}
+	return 0;
+}
+
+static int check_sector(struct faulty_conf *conf, sector_t start, sector_t end, int dir)
+{
+	/* If we find a ReadFixable sector, we fix it ... */
+	int i;
+	for (i=0; i<conf->nfaults; i++)
+		if (conf->faults[i] >= start &&
+		    conf->faults[i] < end) {
+			/* found it ... */
+			switch (conf->modes[i] * 2 + dir) {
+			case WritePersistent*2+WRITE: return 1;
+			case ReadPersistent*2+READ: return 1;
+			case ReadFixable*2+READ: return 1;
+			case ReadFixable*2+WRITE:
+				conf->modes[i] = NoPersist;
+				return 0;
+			case AllPersist*2+READ:
+			case AllPersist*2+WRITE: return 1;
+			default:
+				return 0;
+			}
+		}
+	return 0;
+}
+
+static void add_sector(struct faulty_conf *conf, sector_t start, int mode)
+{
+	int i;
+	int n = conf->nfaults;
+	for (i=0; i<conf->nfaults; i++)
+		if (conf->faults[i] == start) {
+			switch(mode) {
+			case NoPersist: conf->modes[i] = mode; return;
+			case WritePersistent:
+				if (conf->modes[i] == ReadPersistent ||
+				    conf->modes[i] == ReadFixable)
+					conf->modes[i] = AllPersist;
+				else
+					conf->modes[i] = WritePersistent;
+				return;
+			case ReadPersistent:
+				if (conf->modes[i] == WritePersistent)
+					conf->modes[i] = AllPersist;
+				else
+					conf->modes[i] = ReadPersistent;
+				return;
+			case ReadFixable:
+				if (conf->modes[i] == WritePersistent ||
+				    conf->modes[i] == ReadPersistent)
+					conf->modes[i] = AllPersist;
+				else
+					conf->modes[i] = ReadFixable;
+				return;
+			}
+		} else if (conf->modes[i] == NoPersist)
+			n = i;
+
+	if (n >= MaxFault)
+		return;
+	conf->faults[n] = start;
+	conf->modes[n] = mode;
+	if (conf->nfaults == n)
+		conf->nfaults = n+1;
+}
+
+static bool faulty_make_request(struct mddev *mddev, struct bio *bio)
+{
+	struct faulty_conf *conf = mddev->private;
+	int failit = 0;
+
+	if (bio_data_dir(bio) == WRITE) {
+		/* write request */
+		if (atomic_read(&conf->counters[WriteAll])) {
+			/* special case - don't decrement, don't submit_bio_noacct,
+			 * just fail immediately
+			 */
+			bio_io_error(bio);
+			return true;
+		}
+
+		if (check_sector(conf, bio->bi_iter.bi_sector,
+				 bio_end_sector(bio), WRITE))
+			failit = 1;
+		if (check_mode(conf, WritePersistent)) {
+			add_sector(conf, bio->bi_iter.bi_sector,
+				   WritePersistent);
+			failit = 1;
+		}
+		if (check_mode(conf, WriteTransient))
+			failit = 1;
+	} else {
+		/* read request */
+		if (check_sector(conf, bio->bi_iter.bi_sector,
+				 bio_end_sector(bio), READ))
+			failit = 1;
+		if (check_mode(conf, ReadTransient))
+			failit = 1;
+		if (check_mode(conf, ReadPersistent)) {
+			add_sector(conf, bio->bi_iter.bi_sector,
+				   ReadPersistent);
+			failit = 1;
+		}
+		if (check_mode(conf, ReadFixable)) {
+			add_sector(conf, bio->bi_iter.bi_sector,
+				   ReadFixable);
+			failit = 1;
+		}
+	}
+	if (failit) {
+		struct bio *b = bio_alloc_clone(conf->rdev->bdev, bio, GFP_NOIO,
+						&mddev->bio_set);
+
+		b->bi_private = bio;
+		b->bi_end_io = faulty_fail;
+		bio = b;
+	} else
+		bio_set_dev(bio, conf->rdev->bdev);
+
+	submit_bio_noacct(bio);
+	return true;
+}
+
+static void faulty_status(struct seq_file *seq, struct mddev *mddev)
+{
+	struct faulty_conf *conf = mddev->private;
+	int n;
+
+	if ((n=atomic_read(&conf->counters[WriteTransient])) != 0)
+		seq_printf(seq, " WriteTransient=%d(%d)",
+			   n, conf->period[WriteTransient]);
+
+	if ((n=atomic_read(&conf->counters[ReadTransient])) != 0)
+		seq_printf(seq, " ReadTransient=%d(%d)",
+			   n, conf->period[ReadTransient]);
+
+	if ((n=atomic_read(&conf->counters[WritePersistent])) != 0)
+		seq_printf(seq, " WritePersistent=%d(%d)",
+			   n, conf->period[WritePersistent]);
+
+	if ((n=atomic_read(&conf->counters[ReadPersistent])) != 0)
+		seq_printf(seq, " ReadPersistent=%d(%d)",
+			   n, conf->period[ReadPersistent]);
+
+
+	if ((n=atomic_read(&conf->counters[ReadFixable])) != 0)
+		seq_printf(seq, " ReadFixable=%d(%d)",
+			   n, conf->period[ReadFixable]);
+
+	if ((n=atomic_read(&conf->counters[WriteAll])) != 0)
+		seq_printf(seq, " WriteAll");
+
+	seq_printf(seq, " nfaults=%d", conf->nfaults);
+}
+
+
+static int faulty_reshape(struct mddev *mddev)
+{
+	int mode = mddev->new_layout & ModeMask;
+	int count = mddev->new_layout >> ModeShift;
+	struct faulty_conf *conf = mddev->private;
+
+	if (mddev->new_layout < 0)
+		return 0;
+
+	/* new layout */
+	if (mode == ClearFaults)
+		conf->nfaults = 0;
+	else if (mode == ClearErrors) {
+		int i;
+		for (i=0 ; i < Modes ; i++) {
+			conf->period[i] = 0;
+			atomic_set(&conf->counters[i], 0);
+		}
+	} else if (mode < Modes) {
+		conf->period[mode] = count;
+		if (!count) count++;
+		atomic_set(&conf->counters[mode], count);
+	} else
+		return -EINVAL;
+	mddev->new_layout = -1;
+	mddev->layout = -1; /* makes sure further changes come through */
+	return 0;
+}
+
+static sector_t faulty_size(struct mddev *mddev, sector_t sectors, int raid_disks)
+{
+	WARN_ONCE(raid_disks,
+		  "%s does not support generic reshape\n", __func__);
+
+	if (sectors == 0)
+		return mddev->dev_sectors;
+
+	return sectors;
+}
+
+static int faulty_run(struct mddev *mddev)
+{
+	struct md_rdev *rdev;
+	int i;
+	struct faulty_conf *conf;
+
+	if (md_check_no_bitmap(mddev))
+		return -EINVAL;
+
+	conf = kmalloc(sizeof(*conf), GFP_KERNEL);
+	if (!conf)
+		return -ENOMEM;
+
+	for (i=0; i<Modes; i++) {
+		atomic_set(&conf->counters[i], 0);
+		conf->period[i] = 0;
+	}
+	conf->nfaults = 0;
+
+	rdev_for_each(rdev, mddev) {
+		conf->rdev = rdev;
+		disk_stack_limits(mddev->gendisk, rdev->bdev,
+				  rdev->data_offset << 9);
+	}
+
+	md_set_array_sectors(mddev, faulty_size(mddev, 0, 0));
+	mddev->private = conf;
+
+	faulty_reshape(mddev);
+
+	return 0;
+}
+
+static void faulty_free(struct mddev *mddev, void *priv)
+{
+	struct faulty_conf *conf = priv;
+
+	kfree(conf);
+}
+
+static struct md_personality faulty_personality =
+{
+	.name		= "faulty",
+	.level		= LEVEL_FAULTY,
+	.owner		= THIS_MODULE,
+	.make_request	= faulty_make_request,
+	.run		= faulty_run,
+	.free		= faulty_free,
+	.status		= faulty_status,
+	.check_reshape	= faulty_reshape,
+	.size		= faulty_size,
+};
+
+static int __init raid_init(void)
+{
+	return register_md_personality(&faulty_personality);
+}
+
+static void raid_exit(void)
+{
+	unregister_md_personality(&faulty_personality);
+}
+
+module_init(raid_init);
+module_exit(raid_exit);
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Fault injection personality for MD (deprecated)");
+MODULE_ALIAS("md-personality-10"); /* faulty */
+MODULE_ALIAS("md-faulty");
+MODULE_ALIAS("md-level--5");