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, 629 insertions, 0 deletions

diff --git a/crypto/ahash.c b/crypto/ahash.c
new file mode 100644
index 000000000..ff8c79d97
--- /dev/null
+++ b/crypto/ahash.c
@@ -0,0 +1,629 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Asynchronous Cryptographic Hash operations.
+ *
+ * This is the asynchronous version of hash.c with notification of
+ * completion via a callback.
+ *
+ * Copyright (c) 2008 Loc Ho <lho@amcc.com>
+ */
+
+#include <crypto/internal/hash.h>
+#include <crypto/scatterwalk.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+#include <linux/cryptouser.h>
+#include <linux/compiler.h>
+#include <net/netlink.h>
+
+#include "internal.h"
+
+static const struct crypto_type crypto_ahash_type;
+
+struct ahash_request_priv {
+	crypto_completion_t complete;
+	void *data;
+	u8 *result;
+	u32 flags;
+	void *ubuf[] CRYPTO_MINALIGN_ATTR;
+};
+
+static inline struct ahash_alg *crypto_ahash_alg(struct crypto_ahash *hash)
+{
+	return container_of(crypto_hash_alg_common(hash), struct ahash_alg,
+			    halg);
+}
+
+static int hash_walk_next(struct crypto_hash_walk *walk)
+{
+	unsigned int alignmask = walk->alignmask;
+	unsigned int offset = walk->offset;
+	unsigned int nbytes = min(walk->entrylen,
+				  ((unsigned int)(PAGE_SIZE)) - offset);
+
+	walk->data = kmap_local_page(walk->pg);
+	walk->data += offset;
+
+	if (offset & alignmask) {
+		unsigned int unaligned = alignmask + 1 - (offset & alignmask);
+
+		if (nbytes > unaligned)
+			nbytes = unaligned;
+	}
+
+	walk->entrylen -= nbytes;
+	return nbytes;
+}
+
+static int hash_walk_new_entry(struct crypto_hash_walk *walk)
+{
+	struct scatterlist *sg;
+
+	sg = walk->sg;
+	walk->offset = sg->offset;
+	walk->pg = sg_page(walk->sg) + (walk->offset >> PAGE_SHIFT);
+	walk->offset = offset_in_page(walk->offset);
+	walk->entrylen = sg->length;
+
+	if (walk->entrylen > walk->total)
+		walk->entrylen = walk->total;
+	walk->total -= walk->entrylen;
+
+	return hash_walk_next(walk);
+}
+
+int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err)
+{
+	unsigned int alignmask = walk->alignmask;
+
+	walk->data -= walk->offset;
+
+	if (walk->entrylen && (walk->offset & alignmask) && !err) {
+		unsigned int nbytes;
+
+		walk->offset = ALIGN(walk->offset, alignmask + 1);
+		nbytes = min(walk->entrylen,
+			     (unsigned int)(PAGE_SIZE - walk->offset));
+		if (nbytes) {
+			walk->entrylen -= nbytes;
+			walk->data += walk->offset;
+			return nbytes;
+		}
+	}
+
+	kunmap_local(walk->data);
+	crypto_yield(walk->flags);
+
+	if (err)
+		return err;
+
+	if (walk->entrylen) {
+		walk->offset = 0;
+		walk->pg++;
+		return hash_walk_next(walk);
+	}
+
+	if (!walk->total)
+		return 0;
+
+	walk->sg = sg_next(walk->sg);
+
+	return hash_walk_new_entry(walk);
+}
+EXPORT_SYMBOL_GPL(crypto_hash_walk_done);
+
+int crypto_hash_walk_first(struct ahash_request *req,
+			   struct crypto_hash_walk *walk)
+{
+	walk->total = req->nbytes;
+
+	if (!walk->total) {
+		walk->entrylen = 0;
+		return 0;
+	}
+
+	walk->alignmask = crypto_ahash_alignmask(crypto_ahash_reqtfm(req));
+	walk->sg = req->src;
+	walk->flags = req->base.flags;
+
+	return hash_walk_new_entry(walk);
+}
+EXPORT_SYMBOL_GPL(crypto_hash_walk_first);
+
+static int ahash_setkey_unaligned(struct crypto_ahash *tfm, const u8 *key,
+				unsigned int keylen)
+{
+	unsigned long alignmask = crypto_ahash_alignmask(tfm);
+	int ret;
+	u8 *buffer, *alignbuffer;
+	unsigned long absize;
+
+	absize = keylen + alignmask;
+	buffer = kmalloc(absize, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
+	memcpy(alignbuffer, key, keylen);
+	ret = tfm->setkey(tfm, alignbuffer, keylen);
+	kfree_sensitive(buffer);
+	return ret;
+}
+
+static int ahash_nosetkey(struct crypto_ahash *tfm, const u8 *key,
+			  unsigned int keylen)
+{
+	return -ENOSYS;
+}
+
+static void ahash_set_needkey(struct crypto_ahash *tfm)
+{
+	const struct hash_alg_common *alg = crypto_hash_alg_common(tfm);
+
+	if (tfm->setkey != ahash_nosetkey &&
+	    !(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY))
+		crypto_ahash_set_flags(tfm, CRYPTO_TFM_NEED_KEY);
+}
+
+int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key,
+			unsigned int keylen)
+{
+	unsigned long alignmask = crypto_ahash_alignmask(tfm);
+	int err;
+
+	if ((unsigned long)key & alignmask)
+		err = ahash_setkey_unaligned(tfm, key, keylen);
+	else
+		err = tfm->setkey(tfm, key, keylen);
+
+	if (unlikely(err)) {
+		ahash_set_needkey(tfm);
+		return err;
+	}
+
+	crypto_ahash_clear_flags(tfm, CRYPTO_TFM_NEED_KEY);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(crypto_ahash_setkey);
+
+static int ahash_save_req(struct ahash_request *req, crypto_completion_t cplt,
+			  bool has_state)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	unsigned long alignmask = crypto_ahash_alignmask(tfm);
+	unsigned int ds = crypto_ahash_digestsize(tfm);
+	struct ahash_request *subreq;
+	unsigned int subreq_size;
+	unsigned int reqsize;
+	u8 *result;
+	gfp_t gfp;
+	u32 flags;
+
+	subreq_size = sizeof(*subreq);
+	reqsize = crypto_ahash_reqsize(tfm);
+	reqsize = ALIGN(reqsize, crypto_tfm_ctx_alignment());
+	subreq_size += reqsize;
+	subreq_size += ds;
+	subreq_size += alignmask & ~(crypto_tfm_ctx_alignment() - 1);
+
+	flags = ahash_request_flags(req);
+	gfp = (flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?  GFP_KERNEL : GFP_ATOMIC;
+	subreq = kmalloc(subreq_size, gfp);
+	if (!subreq)
+		return -ENOMEM;
+
+	ahash_request_set_tfm(subreq, tfm);
+	ahash_request_set_callback(subreq, flags, cplt, req);
+
+	result = (u8 *)(subreq + 1) + reqsize;
+	result = PTR_ALIGN(result, alignmask + 1);
+
+	ahash_request_set_crypt(subreq, req->src, result, req->nbytes);
+
+	if (has_state) {
+		void *state;
+
+		state = kmalloc(crypto_ahash_statesize(tfm), gfp);
+		if (!state) {
+			kfree(subreq);
+			return -ENOMEM;
+		}
+
+		crypto_ahash_export(req, state);
+		crypto_ahash_import(subreq, state);
+		kfree_sensitive(state);
+	}
+
+	req->priv = subreq;
+
+	return 0;
+}
+
+static void ahash_restore_req(struct ahash_request *req, int err)
+{
+	struct ahash_request *subreq = req->priv;
+
+	if (!err)
+		memcpy(req->result, subreq->result,
+		       crypto_ahash_digestsize(crypto_ahash_reqtfm(req)));
+
+	req->priv = NULL;
+
+	kfree_sensitive(subreq);
+}
+
+static void ahash_op_unaligned_done(void *data, int err)
+{
+	struct ahash_request *areq = data;
+
+	if (err == -EINPROGRESS)
+		goto out;
+
+	/* First copy req->result into req->priv.result */
+	ahash_restore_req(areq, err);
+
+out:
+	/* Complete the ORIGINAL request. */
+	ahash_request_complete(areq, err);
+}
+
+static int ahash_op_unaligned(struct ahash_request *req,
+			      int (*op)(struct ahash_request *),
+			      bool has_state)
+{
+	int err;
+
+	err = ahash_save_req(req, ahash_op_unaligned_done, has_state);
+	if (err)
+		return err;
+
+	err = op(req->priv);
+	if (err == -EINPROGRESS || err == -EBUSY)
+		return err;
+
+	ahash_restore_req(req, err);
+
+	return err;
+}
+
+static int crypto_ahash_op(struct ahash_request *req,
+			   int (*op)(struct ahash_request *),
+			   bool has_state)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	unsigned long alignmask = crypto_ahash_alignmask(tfm);
+
+	if ((unsigned long)req->result & alignmask)
+		return ahash_op_unaligned(req, op, has_state);
+
+	return op(req);
+}
+
+int crypto_ahash_final(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct crypto_alg *alg = tfm->base.__crt_alg;
+	unsigned int nbytes = req->nbytes;
+	int ret;
+
+	crypto_stats_get(alg);
+	ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->final, true);
+	crypto_stats_ahash_final(nbytes, ret, alg);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_ahash_final);
+
+int crypto_ahash_finup(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct crypto_alg *alg = tfm->base.__crt_alg;
+	unsigned int nbytes = req->nbytes;
+	int ret;
+
+	crypto_stats_get(alg);
+	ret = crypto_ahash_op(req, crypto_ahash_reqtfm(req)->finup, true);
+	crypto_stats_ahash_final(nbytes, ret, alg);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_ahash_finup);
+
+int crypto_ahash_digest(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct crypto_alg *alg = tfm->base.__crt_alg;
+	unsigned int nbytes = req->nbytes;
+	int ret;
+
+	crypto_stats_get(alg);
+	if (crypto_ahash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
+		ret = -ENOKEY;
+	else
+		ret = crypto_ahash_op(req, tfm->digest, false);
+	crypto_stats_ahash_final(nbytes, ret, alg);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_ahash_digest);
+
+static void ahash_def_finup_done2(void *data, int err)
+{
+	struct ahash_request *areq = data;
+
+	if (err == -EINPROGRESS)
+		return;
+
+	ahash_restore_req(areq, err);
+
+	ahash_request_complete(areq, err);
+}
+
+static int ahash_def_finup_finish1(struct ahash_request *req, int err)
+{
+	struct ahash_request *subreq = req->priv;
+
+	if (err)
+		goto out;
+
+	subreq->base.complete = ahash_def_finup_done2;
+
+	err = crypto_ahash_reqtfm(req)->final(subreq);
+	if (err == -EINPROGRESS || err == -EBUSY)
+		return err;
+
+out:
+	ahash_restore_req(req, err);
+	return err;
+}
+
+static void ahash_def_finup_done1(void *data, int err)
+{
+	struct ahash_request *areq = data;
+	struct ahash_request *subreq;
+
+	if (err == -EINPROGRESS)
+		goto out;
+
+	subreq = areq->priv;
+	subreq->base.flags &= CRYPTO_TFM_REQ_MAY_BACKLOG;
+
+	err = ahash_def_finup_finish1(areq, err);
+	if (err == -EINPROGRESS || err == -EBUSY)
+		return;
+
+out:
+	ahash_request_complete(areq, err);
+}
+
+static int ahash_def_finup(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	int err;
+
+	err = ahash_save_req(req, ahash_def_finup_done1, true);
+	if (err)
+		return err;
+
+	err = tfm->update(req->priv);
+	if (err == -EINPROGRESS || err == -EBUSY)
+		return err;
+
+	return ahash_def_finup_finish1(req, err);
+}
+
+static void crypto_ahash_exit_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_ahash *hash = __crypto_ahash_cast(tfm);
+	struct ahash_alg *alg = crypto_ahash_alg(hash);
+
+	alg->exit_tfm(hash);
+}
+
+static int crypto_ahash_init_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_ahash *hash = __crypto_ahash_cast(tfm);
+	struct ahash_alg *alg = crypto_ahash_alg(hash);
+
+	hash->setkey = ahash_nosetkey;
+
+	if (tfm->__crt_alg->cra_type != &crypto_ahash_type)
+		return crypto_init_shash_ops_async(tfm);
+
+	hash->init = alg->init;
+	hash->update = alg->update;
+	hash->final = alg->final;
+	hash->finup = alg->finup ?: ahash_def_finup;
+	hash->digest = alg->digest;
+	hash->export = alg->export;
+	hash->import = alg->import;
+
+	if (alg->setkey) {
+		hash->setkey = alg->setkey;
+		ahash_set_needkey(hash);
+	}
+
+	if (alg->exit_tfm)
+		tfm->exit = crypto_ahash_exit_tfm;
+
+	return alg->init_tfm ? alg->init_tfm(hash) : 0;
+}
+
+static unsigned int crypto_ahash_extsize(struct crypto_alg *alg)
+{
+	if (alg->cra_type != &crypto_ahash_type)
+		return sizeof(struct crypto_shash *);
+
+	return crypto_alg_extsize(alg);
+}
+
+static void crypto_ahash_free_instance(struct crypto_instance *inst)
+{
+	struct ahash_instance *ahash = ahash_instance(inst);
+
+	ahash->free(ahash);
+}
+
+#ifdef CONFIG_NET
+static int crypto_ahash_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct crypto_report_hash rhash;
+
+	memset(&rhash, 0, sizeof(rhash));
+
+	strscpy(rhash.type, "ahash", sizeof(rhash.type));
+
+	rhash.blocksize = alg->cra_blocksize;
+	rhash.digestsize = __crypto_hash_alg_common(alg)->digestsize;
+
+	return nla_put(skb, CRYPTOCFGA_REPORT_HASH, sizeof(rhash), &rhash);
+}
+#else
+static int crypto_ahash_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+	return -ENOSYS;
+}
+#endif
+
+static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
+	__maybe_unused;
+static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
+{
+	seq_printf(m, "type         : ahash\n");
+	seq_printf(m, "async        : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ?
+					     "yes" : "no");
+	seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
+	seq_printf(m, "digestsize   : %u\n",
+		   __crypto_hash_alg_common(alg)->digestsize);
+}
+
+static const struct crypto_type crypto_ahash_type = {
+	.extsize = crypto_ahash_extsize,
+	.init_tfm = crypto_ahash_init_tfm,
+	.free = crypto_ahash_free_instance,
+#ifdef CONFIG_PROC_FS
+	.show = crypto_ahash_show,
+#endif
+	.report = crypto_ahash_report,
+	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
+	.maskset = CRYPTO_ALG_TYPE_AHASH_MASK,
+	.type = CRYPTO_ALG_TYPE_AHASH,
+	.tfmsize = offsetof(struct crypto_ahash, base),
+};
+
+int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
+		      struct crypto_instance *inst,
+		      const char *name, u32 type, u32 mask)
+{
+	spawn->base.frontend = &crypto_ahash_type;
+	return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_grab_ahash);
+
+struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type,
+					u32 mask)
+{
+	return crypto_alloc_tfm(alg_name, &crypto_ahash_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_ahash);
+
+int crypto_has_ahash(const char *alg_name, u32 type, u32 mask)
+{
+	return crypto_type_has_alg(alg_name, &crypto_ahash_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_has_ahash);
+
+static int ahash_prepare_alg(struct ahash_alg *alg)
+{
+	struct crypto_alg *base = &alg->halg.base;
+
+	if (alg->halg.digestsize > HASH_MAX_DIGESTSIZE ||
+	    alg->halg.statesize > HASH_MAX_STATESIZE ||
+	    alg->halg.statesize == 0)
+		return -EINVAL;
+
+	base->cra_type = &crypto_ahash_type;
+	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+	base->cra_flags |= CRYPTO_ALG_TYPE_AHASH;
+
+	return 0;
+}
+
+int crypto_register_ahash(struct ahash_alg *alg)
+{
+	struct crypto_alg *base = &alg->halg.base;
+	int err;
+
+	err = ahash_prepare_alg(alg);
+	if (err)
+		return err;
+
+	return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_ahash);
+
+void crypto_unregister_ahash(struct ahash_alg *alg)
+{
+	crypto_unregister_alg(&alg->halg.base);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_ahash);
+
+int crypto_register_ahashes(struct ahash_alg *algs, int count)
+{
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		ret = crypto_register_ahash(&algs[i]);
+		if (ret)
+			goto err;
+	}
+
+	return 0;
+
+err:
+	for (--i; i >= 0; --i)
+		crypto_unregister_ahash(&algs[i]);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_register_ahashes);
+
+void crypto_unregister_ahashes(struct ahash_alg *algs, int count)
+{
+	int i;
+
+	for (i = count - 1; i >= 0; --i)
+		crypto_unregister_ahash(&algs[i]);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_ahashes);
+
+int ahash_register_instance(struct crypto_template *tmpl,
+			    struct ahash_instance *inst)
+{
+	int err;
+
+	if (WARN_ON(!inst->free))
+		return -EINVAL;
+
+	err = ahash_prepare_alg(&inst->alg);
+	if (err)
+		return err;
+
+	return crypto_register_instance(tmpl, ahash_crypto_instance(inst));
+}
+EXPORT_SYMBOL_GPL(ahash_register_instance);
+
+bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg)
+{
+	struct crypto_alg *alg = &halg->base;
+
+	if (alg->cra_type != &crypto_ahash_type)
+		return crypto_shash_alg_has_setkey(__crypto_shash_alg(alg));
+
+	return __crypto_ahash_alg(alg)->setkey != NULL;
+}
+EXPORT_SYMBOL_GPL(crypto_hash_alg_has_setkey);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Asynchronous cryptographic hash type");