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, 494 insertions, 0 deletions

diff --git a/block/blk.h b/block/blk.h
new file mode 100644
index 000000000..4c3b33252
--- /dev/null
+++ b/block/blk.h
@@ -0,0 +1,494 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef BLK_INTERNAL_H
+#define BLK_INTERNAL_H
+
+#include <linux/blk-crypto.h>
+#include <linux/memblock.h>	/* for max_pfn/max_low_pfn */
+#include <xen/xen.h>
+#include "blk-crypto-internal.h"
+
+struct elevator_type;
+
+/* Max future timer expiry for timeouts */
+#define BLK_MAX_TIMEOUT		(5 * HZ)
+
+extern struct dentry *blk_debugfs_root;
+
+struct blk_flush_queue {
+	unsigned int		flush_pending_idx:1;
+	unsigned int		flush_running_idx:1;
+	blk_status_t 		rq_status;
+	unsigned long		flush_pending_since;
+	struct list_head	flush_queue[2];
+	struct list_head	flush_data_in_flight;
+	struct request		*flush_rq;
+
+	spinlock_t		mq_flush_lock;
+};
+
+bool is_flush_rq(struct request *req);
+
+struct blk_flush_queue *blk_alloc_flush_queue(int node, int cmd_size,
+					      gfp_t flags);
+void blk_free_flush_queue(struct blk_flush_queue *q);
+
+void blk_freeze_queue(struct request_queue *q);
+void __blk_mq_unfreeze_queue(struct request_queue *q, bool force_atomic);
+void blk_queue_start_drain(struct request_queue *q);
+int __bio_queue_enter(struct request_queue *q, struct bio *bio);
+void submit_bio_noacct_nocheck(struct bio *bio);
+
+static inline bool blk_try_enter_queue(struct request_queue *q, bool pm)
+{
+	rcu_read_lock();
+	if (!percpu_ref_tryget_live_rcu(&q->q_usage_counter))
+		goto fail;
+
+	/*
+	 * The code that increments the pm_only counter must ensure that the
+	 * counter is globally visible before the queue is unfrozen.
+	 */
+	if (blk_queue_pm_only(q) &&
+	    (!pm || queue_rpm_status(q) == RPM_SUSPENDED))
+		goto fail_put;
+
+	rcu_read_unlock();
+	return true;
+
+fail_put:
+	blk_queue_exit(q);
+fail:
+	rcu_read_unlock();
+	return false;
+}
+
+static inline int bio_queue_enter(struct bio *bio)
+{
+	struct request_queue *q = bdev_get_queue(bio->bi_bdev);
+
+	if (blk_try_enter_queue(q, false))
+		return 0;
+	return __bio_queue_enter(q, bio);
+}
+
+#define BIO_INLINE_VECS 4
+struct bio_vec *bvec_alloc(mempool_t *pool, unsigned short *nr_vecs,
+		gfp_t gfp_mask);
+void bvec_free(mempool_t *pool, struct bio_vec *bv, unsigned short nr_vecs);
+
+static inline bool biovec_phys_mergeable(struct request_queue *q,
+		struct bio_vec *vec1, struct bio_vec *vec2)
+{
+	unsigned long mask = queue_segment_boundary(q);
+	phys_addr_t addr1 = page_to_phys(vec1->bv_page) + vec1->bv_offset;
+	phys_addr_t addr2 = page_to_phys(vec2->bv_page) + vec2->bv_offset;
+
+	/*
+	 * Merging adjacent physical pages may not work correctly under KMSAN
+	 * if their metadata pages aren't adjacent. Just disable merging.
+	 */
+	if (IS_ENABLED(CONFIG_KMSAN))
+		return false;
+
+	if (addr1 + vec1->bv_len != addr2)
+		return false;
+	if (xen_domain() && !xen_biovec_phys_mergeable(vec1, vec2->bv_page))
+		return false;
+	if ((addr1 | mask) != ((addr2 + vec2->bv_len - 1) | mask))
+		return false;
+	return true;
+}
+
+static inline bool __bvec_gap_to_prev(const struct queue_limits *lim,
+		struct bio_vec *bprv, unsigned int offset)
+{
+	return (offset & lim->virt_boundary_mask) ||
+		((bprv->bv_offset + bprv->bv_len) & lim->virt_boundary_mask);
+}
+
+/*
+ * Check if adding a bio_vec after bprv with offset would create a gap in
+ * the SG list. Most drivers don't care about this, but some do.
+ */
+static inline bool bvec_gap_to_prev(const struct queue_limits *lim,
+		struct bio_vec *bprv, unsigned int offset)
+{
+	if (!lim->virt_boundary_mask)
+		return false;
+	return __bvec_gap_to_prev(lim, bprv, offset);
+}
+
+static inline bool rq_mergeable(struct request *rq)
+{
+	if (blk_rq_is_passthrough(rq))
+		return false;
+
+	if (req_op(rq) == REQ_OP_FLUSH)
+		return false;
+
+	if (req_op(rq) == REQ_OP_WRITE_ZEROES)
+		return false;
+
+	if (req_op(rq) == REQ_OP_ZONE_APPEND)
+		return false;
+
+	if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
+		return false;
+	if (rq->rq_flags & RQF_NOMERGE_FLAGS)
+		return false;
+
+	return true;
+}
+
+/*
+ * There are two different ways to handle DISCARD merges:
+ *  1) If max_discard_segments > 1, the driver treats every bio as a range and
+ *     send the bios to controller together. The ranges don't need to be
+ *     contiguous.
+ *  2) Otherwise, the request will be normal read/write requests.  The ranges
+ *     need to be contiguous.
+ */
+static inline bool blk_discard_mergable(struct request *req)
+{
+	if (req_op(req) == REQ_OP_DISCARD &&
+	    queue_max_discard_segments(req->q) > 1)
+		return true;
+	return false;
+}
+
+static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
+						     enum req_op op)
+{
+	if (unlikely(op == REQ_OP_DISCARD || op == REQ_OP_SECURE_ERASE))
+		return min(q->limits.max_discard_sectors,
+			   UINT_MAX >> SECTOR_SHIFT);
+
+	if (unlikely(op == REQ_OP_WRITE_ZEROES))
+		return q->limits.max_write_zeroes_sectors;
+
+	return q->limits.max_sectors;
+}
+
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+void blk_flush_integrity(void);
+bool __bio_integrity_endio(struct bio *);
+void bio_integrity_free(struct bio *bio);
+static inline bool bio_integrity_endio(struct bio *bio)
+{
+	if (bio_integrity(bio))
+		return __bio_integrity_endio(bio);
+	return true;
+}
+
+bool blk_integrity_merge_rq(struct request_queue *, struct request *,
+		struct request *);
+bool blk_integrity_merge_bio(struct request_queue *, struct request *,
+		struct bio *);
+
+static inline bool integrity_req_gap_back_merge(struct request *req,
+		struct bio *next)
+{
+	struct bio_integrity_payload *bip = bio_integrity(req->bio);
+	struct bio_integrity_payload *bip_next = bio_integrity(next);
+
+	return bvec_gap_to_prev(&req->q->limits,
+				&bip->bip_vec[bip->bip_vcnt - 1],
+				bip_next->bip_vec[0].bv_offset);
+}
+
+static inline bool integrity_req_gap_front_merge(struct request *req,
+		struct bio *bio)
+{
+	struct bio_integrity_payload *bip = bio_integrity(bio);
+	struct bio_integrity_payload *bip_next = bio_integrity(req->bio);
+
+	return bvec_gap_to_prev(&req->q->limits,
+				&bip->bip_vec[bip->bip_vcnt - 1],
+				bip_next->bip_vec[0].bv_offset);
+}
+
+int blk_integrity_add(struct gendisk *disk);
+void blk_integrity_del(struct gendisk *);
+#else /* CONFIG_BLK_DEV_INTEGRITY */
+static inline bool blk_integrity_merge_rq(struct request_queue *rq,
+		struct request *r1, struct request *r2)
+{
+	return true;
+}
+static inline bool blk_integrity_merge_bio(struct request_queue *rq,
+		struct request *r, struct bio *b)
+{
+	return true;
+}
+static inline bool integrity_req_gap_back_merge(struct request *req,
+		struct bio *next)
+{
+	return false;
+}
+static inline bool integrity_req_gap_front_merge(struct request *req,
+		struct bio *bio)
+{
+	return false;
+}
+
+static inline void blk_flush_integrity(void)
+{
+}
+static inline bool bio_integrity_endio(struct bio *bio)
+{
+	return true;
+}
+static inline void bio_integrity_free(struct bio *bio)
+{
+}
+static inline int blk_integrity_add(struct gendisk *disk)
+{
+	return 0;
+}
+static inline void blk_integrity_del(struct gendisk *disk)
+{
+}
+#endif /* CONFIG_BLK_DEV_INTEGRITY */
+
+unsigned long blk_rq_timeout(unsigned long timeout);
+void blk_add_timer(struct request *req);
+const char *blk_status_to_str(blk_status_t status);
+
+bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio,
+		unsigned int nr_segs);
+bool blk_bio_list_merge(struct request_queue *q, struct list_head *list,
+			struct bio *bio, unsigned int nr_segs);
+
+/*
+ * Plug flush limits
+ */
+#define BLK_MAX_REQUEST_COUNT	32
+#define BLK_PLUG_FLUSH_SIZE	(128 * 1024)
+
+/*
+ * Internal elevator interface
+ */
+#define ELV_ON_HASH(rq) ((rq)->rq_flags & RQF_HASHED)
+
+void blk_insert_flush(struct request *rq);
+
+int elevator_switch(struct request_queue *q, struct elevator_type *new_e);
+void elevator_disable(struct request_queue *q);
+void elevator_exit(struct request_queue *q);
+int elv_register_queue(struct request_queue *q, bool uevent);
+void elv_unregister_queue(struct request_queue *q);
+
+ssize_t part_size_show(struct device *dev, struct device_attribute *attr,
+		char *buf);
+ssize_t part_stat_show(struct device *dev, struct device_attribute *attr,
+		char *buf);
+ssize_t part_inflight_show(struct device *dev, struct device_attribute *attr,
+		char *buf);
+ssize_t part_fail_show(struct device *dev, struct device_attribute *attr,
+		char *buf);
+ssize_t part_fail_store(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t count);
+ssize_t part_timeout_show(struct device *, struct device_attribute *, char *);
+ssize_t part_timeout_store(struct device *, struct device_attribute *,
+				const char *, size_t);
+
+static inline bool bio_may_exceed_limits(struct bio *bio,
+					 const struct queue_limits *lim)
+{
+	switch (bio_op(bio)) {
+	case REQ_OP_DISCARD:
+	case REQ_OP_SECURE_ERASE:
+	case REQ_OP_WRITE_ZEROES:
+		return true; /* non-trivial splitting decisions */
+	default:
+		break;
+	}
+
+	/*
+	 * All drivers must accept single-segments bios that are <= PAGE_SIZE.
+	 * This is a quick and dirty check that relies on the fact that
+	 * bi_io_vec[0] is always valid if a bio has data.  The check might
+	 * lead to occasional false negatives when bios are cloned, but compared
+	 * to the performance impact of cloned bios themselves the loop below
+	 * doesn't matter anyway.
+	 */
+	return lim->chunk_sectors || bio->bi_vcnt != 1 ||
+		bio->bi_io_vec->bv_len + bio->bi_io_vec->bv_offset > PAGE_SIZE;
+}
+
+struct bio *__bio_split_to_limits(struct bio *bio,
+				  const struct queue_limits *lim,
+				  unsigned int *nr_segs);
+int ll_back_merge_fn(struct request *req, struct bio *bio,
+		unsigned int nr_segs);
+bool blk_attempt_req_merge(struct request_queue *q, struct request *rq,
+				struct request *next);
+unsigned int blk_recalc_rq_segments(struct request *rq);
+void blk_rq_set_mixed_merge(struct request *rq);
+bool blk_rq_merge_ok(struct request *rq, struct bio *bio);
+enum elv_merge blk_try_merge(struct request *rq, struct bio *bio);
+
+void blk_set_default_limits(struct queue_limits *lim);
+int blk_dev_init(void);
+
+/*
+ * Contribute to IO statistics IFF:
+ *
+ *	a) it's attached to a gendisk, and
+ *	b) the queue had IO stats enabled when this request was started
+ */
+static inline bool blk_do_io_stat(struct request *rq)
+{
+	return (rq->rq_flags & RQF_IO_STAT) && !blk_rq_is_passthrough(rq);
+}
+
+void update_io_ticks(struct block_device *part, unsigned long now, bool end);
+
+static inline void req_set_nomerge(struct request_queue *q, struct request *req)
+{
+	req->cmd_flags |= REQ_NOMERGE;
+	if (req == q->last_merge)
+		q->last_merge = NULL;
+}
+
+/*
+ * Internal io_context interface
+ */
+struct io_cq *ioc_find_get_icq(struct request_queue *q);
+struct io_cq *ioc_lookup_icq(struct request_queue *q);
+#ifdef CONFIG_BLK_ICQ
+void ioc_clear_queue(struct request_queue *q);
+#else
+static inline void ioc_clear_queue(struct request_queue *q)
+{
+}
+#endif /* CONFIG_BLK_ICQ */
+
+#ifdef CONFIG_BLK_DEV_THROTTLING_LOW
+extern ssize_t blk_throtl_sample_time_show(struct request_queue *q, char *page);
+extern ssize_t blk_throtl_sample_time_store(struct request_queue *q,
+	const char *page, size_t count);
+extern void blk_throtl_bio_endio(struct bio *bio);
+extern void blk_throtl_stat_add(struct request *rq, u64 time);
+#else
+static inline void blk_throtl_bio_endio(struct bio *bio) { }
+static inline void blk_throtl_stat_add(struct request *rq, u64 time) { }
+#endif
+
+struct bio *__blk_queue_bounce(struct bio *bio, struct request_queue *q);
+
+static inline bool blk_queue_may_bounce(struct request_queue *q)
+{
+	return IS_ENABLED(CONFIG_BOUNCE) &&
+		q->limits.bounce == BLK_BOUNCE_HIGH &&
+		max_low_pfn >= max_pfn;
+}
+
+static inline struct bio *blk_queue_bounce(struct bio *bio,
+		struct request_queue *q)
+{
+	if (unlikely(blk_queue_may_bounce(q) && bio_has_data(bio)))
+		return __blk_queue_bounce(bio, q);
+	return bio;
+}
+
+#ifdef CONFIG_BLK_CGROUP_IOLATENCY
+int blk_iolatency_init(struct gendisk *disk);
+#else
+static inline int blk_iolatency_init(struct gendisk *disk) { return 0; };
+#endif
+
+#ifdef CONFIG_BLK_DEV_ZONED
+void disk_free_zone_bitmaps(struct gendisk *disk);
+void disk_clear_zone_settings(struct gendisk *disk);
+#else
+static inline void disk_free_zone_bitmaps(struct gendisk *disk) {}
+static inline void disk_clear_zone_settings(struct gendisk *disk) {}
+#endif
+
+int blk_alloc_ext_minor(void);
+void blk_free_ext_minor(unsigned int minor);
+#define ADDPART_FLAG_NONE	0
+#define ADDPART_FLAG_RAID	1
+#define ADDPART_FLAG_WHOLEDISK	2
+int bdev_add_partition(struct gendisk *disk, int partno, sector_t start,
+		sector_t length);
+int bdev_del_partition(struct gendisk *disk, int partno);
+int bdev_resize_partition(struct gendisk *disk, int partno, sector_t start,
+		sector_t length);
+void blk_drop_partitions(struct gendisk *disk);
+
+struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
+		struct lock_class_key *lkclass);
+
+int bio_add_hw_page(struct request_queue *q, struct bio *bio,
+		struct page *page, unsigned int len, unsigned int offset,
+		unsigned int max_sectors, bool *same_page);
+
+struct request_queue *blk_alloc_queue(int node_id);
+
+int disk_scan_partitions(struct gendisk *disk, fmode_t mode, void *owner);
+
+int disk_alloc_events(struct gendisk *disk);
+void disk_add_events(struct gendisk *disk);
+void disk_del_events(struct gendisk *disk);
+void disk_release_events(struct gendisk *disk);
+void disk_block_events(struct gendisk *disk);
+void disk_unblock_events(struct gendisk *disk);
+void disk_flush_events(struct gendisk *disk, unsigned int mask);
+extern struct device_attribute dev_attr_events;
+extern struct device_attribute dev_attr_events_async;
+extern struct device_attribute dev_attr_events_poll_msecs;
+
+extern struct attribute_group blk_trace_attr_group;
+
+long blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg);
+long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg);
+
+extern const struct address_space_operations def_blk_aops;
+
+int disk_register_independent_access_ranges(struct gendisk *disk);
+void disk_unregister_independent_access_ranges(struct gendisk *disk);
+
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+bool should_fail_request(struct block_device *part, unsigned int bytes);
+#else /* CONFIG_FAIL_MAKE_REQUEST */
+static inline bool should_fail_request(struct block_device *part,
+					unsigned int bytes)
+{
+	return false;
+}
+#endif /* CONFIG_FAIL_MAKE_REQUEST */
+
+/*
+ * Optimized request reference counting. Ideally we'd make timeouts be more
+ * clever, as that's the only reason we need references at all... But until
+ * this happens, this is faster than using refcount_t. Also see:
+ *
+ * abc54d634334 ("io_uring: switch to atomic_t for io_kiocb reference count")
+ */
+#define req_ref_zero_or_close_to_overflow(req)	\
+	((unsigned int) atomic_read(&(req->ref)) + 127u <= 127u)
+
+static inline bool req_ref_inc_not_zero(struct request *req)
+{
+	return atomic_inc_not_zero(&req->ref);
+}
+
+static inline bool req_ref_put_and_test(struct request *req)
+{
+	WARN_ON_ONCE(req_ref_zero_or_close_to_overflow(req));
+	return atomic_dec_and_test(&req->ref);
+}
+
+static inline void req_ref_set(struct request *req, int value)
+{
+	atomic_set(&req->ref, value);
+}
+
+static inline int req_ref_read(struct request *req)
+{
+	return atomic_read(&req->ref);
+}
+
+#endif /* BLK_INTERNAL_H */