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, 626 insertions, 0 deletions

diff --git a/crypto/shash.c b/crypto/shash.c
new file mode 100644
index 000000000..58b46f198
--- /dev/null
+++ b/crypto/shash.c
@@ -0,0 +1,626 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Synchronous Cryptographic Hash operations.
+ *
+ * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
+ */
+
+#include <crypto/scatterwalk.h>
+#include <crypto/internal/hash.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
+#include <linux/compiler.h>
+
+#include "internal.h"
+
+#define MAX_SHASH_ALIGNMASK 63
+
+static const struct crypto_type crypto_shash_type;
+
+int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
+		    unsigned int keylen)
+{
+	return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(shash_no_setkey);
+
+static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key,
+				  unsigned int keylen)
+{
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+	unsigned long absize;
+	u8 *buffer, *alignbuffer;
+	int err;
+
+	absize = keylen + (alignmask & ~(crypto_tfm_ctx_alignment() - 1));
+	buffer = kmalloc(absize, GFP_ATOMIC);
+	if (!buffer)
+		return -ENOMEM;
+
+	alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
+	memcpy(alignbuffer, key, keylen);
+	err = shash->setkey(tfm, alignbuffer, keylen);
+	kfree_sensitive(buffer);
+	return err;
+}
+
+static void shash_set_needkey(struct crypto_shash *tfm, struct shash_alg *alg)
+{
+	if (crypto_shash_alg_needs_key(alg))
+		crypto_shash_set_flags(tfm, CRYPTO_TFM_NEED_KEY);
+}
+
+int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key,
+			unsigned int keylen)
+{
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+	int err;
+
+	if ((unsigned long)key & alignmask)
+		err = shash_setkey_unaligned(tfm, key, keylen);
+	else
+		err = shash->setkey(tfm, key, keylen);
+
+	if (unlikely(err)) {
+		shash_set_needkey(tfm, shash);
+		return err;
+	}
+
+	crypto_shash_clear_flags(tfm, CRYPTO_TFM_NEED_KEY);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(crypto_shash_setkey);
+
+static int shash_update_unaligned(struct shash_desc *desc, const u8 *data,
+				  unsigned int len)
+{
+	struct crypto_shash *tfm = desc->tfm;
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+	unsigned int unaligned_len = alignmask + 1 -
+				     ((unsigned long)data & alignmask);
+	/*
+	 * We cannot count on __aligned() working for large values:
+	 * https://patchwork.kernel.org/patch/9507697/
+	 */
+	u8 ubuf[MAX_SHASH_ALIGNMASK * 2];
+	u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1);
+	int err;
+
+	if (WARN_ON(buf + unaligned_len > ubuf + sizeof(ubuf)))
+		return -EINVAL;
+
+	if (unaligned_len > len)
+		unaligned_len = len;
+
+	memcpy(buf, data, unaligned_len);
+	err = shash->update(desc, buf, unaligned_len);
+	memset(buf, 0, unaligned_len);
+
+	return err ?:
+	       shash->update(desc, data + unaligned_len, len - unaligned_len);
+}
+
+int crypto_shash_update(struct shash_desc *desc, const u8 *data,
+			unsigned int len)
+{
+	struct crypto_shash *tfm = desc->tfm;
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+
+	if ((unsigned long)data & alignmask)
+		return shash_update_unaligned(desc, data, len);
+
+	return shash->update(desc, data, len);
+}
+EXPORT_SYMBOL_GPL(crypto_shash_update);
+
+static int shash_final_unaligned(struct shash_desc *desc, u8 *out)
+{
+	struct crypto_shash *tfm = desc->tfm;
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned int ds = crypto_shash_digestsize(tfm);
+	/*
+	 * We cannot count on __aligned() working for large values:
+	 * https://patchwork.kernel.org/patch/9507697/
+	 */
+	u8 ubuf[MAX_SHASH_ALIGNMASK + HASH_MAX_DIGESTSIZE];
+	u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1);
+	int err;
+
+	if (WARN_ON(buf + ds > ubuf + sizeof(ubuf)))
+		return -EINVAL;
+
+	err = shash->final(desc, buf);
+	if (err)
+		goto out;
+
+	memcpy(out, buf, ds);
+
+out:
+	memset(buf, 0, ds);
+	return err;
+}
+
+int crypto_shash_final(struct shash_desc *desc, u8 *out)
+{
+	struct crypto_shash *tfm = desc->tfm;
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+
+	if ((unsigned long)out & alignmask)
+		return shash_final_unaligned(desc, out);
+
+	return shash->final(desc, out);
+}
+EXPORT_SYMBOL_GPL(crypto_shash_final);
+
+static int shash_finup_unaligned(struct shash_desc *desc, const u8 *data,
+				 unsigned int len, u8 *out)
+{
+	return crypto_shash_update(desc, data, len) ?:
+	       crypto_shash_final(desc, out);
+}
+
+int crypto_shash_finup(struct shash_desc *desc, const u8 *data,
+		       unsigned int len, u8 *out)
+{
+	struct crypto_shash *tfm = desc->tfm;
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+
+	if (((unsigned long)data | (unsigned long)out) & alignmask)
+		return shash_finup_unaligned(desc, data, len, out);
+
+	return shash->finup(desc, data, len, out);
+}
+EXPORT_SYMBOL_GPL(crypto_shash_finup);
+
+static int shash_digest_unaligned(struct shash_desc *desc, const u8 *data,
+				  unsigned int len, u8 *out)
+{
+	return crypto_shash_init(desc) ?:
+	       crypto_shash_finup(desc, data, len, out);
+}
+
+int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
+			unsigned int len, u8 *out)
+{
+	struct crypto_shash *tfm = desc->tfm;
+	struct shash_alg *shash = crypto_shash_alg(tfm);
+	unsigned long alignmask = crypto_shash_alignmask(tfm);
+
+	if (crypto_shash_get_flags(tfm) & CRYPTO_TFM_NEED_KEY)
+		return -ENOKEY;
+
+	if (((unsigned long)data | (unsigned long)out) & alignmask)
+		return shash_digest_unaligned(desc, data, len, out);
+
+	return shash->digest(desc, data, len, out);
+}
+EXPORT_SYMBOL_GPL(crypto_shash_digest);
+
+int crypto_shash_tfm_digest(struct crypto_shash *tfm, const u8 *data,
+			    unsigned int len, u8 *out)
+{
+	SHASH_DESC_ON_STACK(desc, tfm);
+	int err;
+
+	desc->tfm = tfm;
+
+	err = crypto_shash_digest(desc, data, len, out);
+
+	shash_desc_zero(desc);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(crypto_shash_tfm_digest);
+
+static int shash_default_export(struct shash_desc *desc, void *out)
+{
+	memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm));
+	return 0;
+}
+
+static int shash_default_import(struct shash_desc *desc, const void *in)
+{
+	memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(desc->tfm));
+	return 0;
+}
+
+static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
+			      unsigned int keylen)
+{
+	struct crypto_shash **ctx = crypto_ahash_ctx(tfm);
+
+	return crypto_shash_setkey(*ctx, key, keylen);
+}
+
+static int shash_async_init(struct ahash_request *req)
+{
+	struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+	struct shash_desc *desc = ahash_request_ctx(req);
+
+	desc->tfm = *ctx;
+
+	return crypto_shash_init(desc);
+}
+
+int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc)
+{
+	struct crypto_hash_walk walk;
+	int nbytes;
+
+	for (nbytes = crypto_hash_walk_first(req, &walk); nbytes > 0;
+	     nbytes = crypto_hash_walk_done(&walk, nbytes))
+		nbytes = crypto_shash_update(desc, walk.data, nbytes);
+
+	return nbytes;
+}
+EXPORT_SYMBOL_GPL(shash_ahash_update);
+
+static int shash_async_update(struct ahash_request *req)
+{
+	return shash_ahash_update(req, ahash_request_ctx(req));
+}
+
+static int shash_async_final(struct ahash_request *req)
+{
+	return crypto_shash_final(ahash_request_ctx(req), req->result);
+}
+
+int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc)
+{
+	struct crypto_hash_walk walk;
+	int nbytes;
+
+	nbytes = crypto_hash_walk_first(req, &walk);
+	if (!nbytes)
+		return crypto_shash_final(desc, req->result);
+
+	do {
+		nbytes = crypto_hash_walk_last(&walk) ?
+			 crypto_shash_finup(desc, walk.data, nbytes,
+					    req->result) :
+			 crypto_shash_update(desc, walk.data, nbytes);
+		nbytes = crypto_hash_walk_done(&walk, nbytes);
+	} while (nbytes > 0);
+
+	return nbytes;
+}
+EXPORT_SYMBOL_GPL(shash_ahash_finup);
+
+static int shash_async_finup(struct ahash_request *req)
+{
+	struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+	struct shash_desc *desc = ahash_request_ctx(req);
+
+	desc->tfm = *ctx;
+
+	return shash_ahash_finup(req, desc);
+}
+
+int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc)
+{
+	unsigned int nbytes = req->nbytes;
+	struct scatterlist *sg;
+	unsigned int offset;
+	int err;
+
+	if (nbytes &&
+	    (sg = req->src, offset = sg->offset,
+	     nbytes <= min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset))) {
+		void *data;
+
+		data = kmap_local_page(sg_page(sg));
+		err = crypto_shash_digest(desc, data + offset, nbytes,
+					  req->result);
+		kunmap_local(data);
+	} else
+		err = crypto_shash_init(desc) ?:
+		      shash_ahash_finup(req, desc);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(shash_ahash_digest);
+
+static int shash_async_digest(struct ahash_request *req)
+{
+	struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+	struct shash_desc *desc = ahash_request_ctx(req);
+
+	desc->tfm = *ctx;
+
+	return shash_ahash_digest(req, desc);
+}
+
+static int shash_async_export(struct ahash_request *req, void *out)
+{
+	return crypto_shash_export(ahash_request_ctx(req), out);
+}
+
+static int shash_async_import(struct ahash_request *req, const void *in)
+{
+	struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+	struct shash_desc *desc = ahash_request_ctx(req);
+
+	desc->tfm = *ctx;
+
+	return crypto_shash_import(desc, in);
+}
+
+static void crypto_exit_shash_ops_async(struct crypto_tfm *tfm)
+{
+	struct crypto_shash **ctx = crypto_tfm_ctx(tfm);
+
+	crypto_free_shash(*ctx);
+}
+
+int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
+{
+	struct crypto_alg *calg = tfm->__crt_alg;
+	struct shash_alg *alg = __crypto_shash_alg(calg);
+	struct crypto_ahash *crt = __crypto_ahash_cast(tfm);
+	struct crypto_shash **ctx = crypto_tfm_ctx(tfm);
+	struct crypto_shash *shash;
+
+	if (!crypto_mod_get(calg))
+		return -EAGAIN;
+
+	shash = crypto_create_tfm(calg, &crypto_shash_type);
+	if (IS_ERR(shash)) {
+		crypto_mod_put(calg);
+		return PTR_ERR(shash);
+	}
+
+	*ctx = shash;
+	tfm->exit = crypto_exit_shash_ops_async;
+
+	crt->init = shash_async_init;
+	crt->update = shash_async_update;
+	crt->final = shash_async_final;
+	crt->finup = shash_async_finup;
+	crt->digest = shash_async_digest;
+	if (crypto_shash_alg_has_setkey(alg))
+		crt->setkey = shash_async_setkey;
+
+	crypto_ahash_set_flags(crt, crypto_shash_get_flags(shash) &
+				    CRYPTO_TFM_NEED_KEY);
+
+	crt->export = shash_async_export;
+	crt->import = shash_async_import;
+
+	crt->reqsize = sizeof(struct shash_desc) + crypto_shash_descsize(shash);
+
+	return 0;
+}
+
+static void crypto_shash_exit_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_shash *hash = __crypto_shash_cast(tfm);
+	struct shash_alg *alg = crypto_shash_alg(hash);
+
+	alg->exit_tfm(hash);
+}
+
+static int crypto_shash_init_tfm(struct crypto_tfm *tfm)
+{
+	struct crypto_shash *hash = __crypto_shash_cast(tfm);
+	struct shash_alg *alg = crypto_shash_alg(hash);
+	int err;
+
+	hash->descsize = alg->descsize;
+
+	shash_set_needkey(hash, alg);
+
+	if (alg->exit_tfm)
+		tfm->exit = crypto_shash_exit_tfm;
+
+	if (!alg->init_tfm)
+		return 0;
+
+	err = alg->init_tfm(hash);
+	if (err)
+		return err;
+
+	/* ->init_tfm() may have increased the descsize. */
+	if (WARN_ON_ONCE(hash->descsize > HASH_MAX_DESCSIZE)) {
+		if (alg->exit_tfm)
+			alg->exit_tfm(hash);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void crypto_shash_free_instance(struct crypto_instance *inst)
+{
+	struct shash_instance *shash = shash_instance(inst);
+
+	shash->free(shash);
+}
+
+#ifdef CONFIG_NET
+static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct crypto_report_hash rhash;
+	struct shash_alg *salg = __crypto_shash_alg(alg);
+
+	memset(&rhash, 0, sizeof(rhash));
+
+	strscpy(rhash.type, "shash", sizeof(rhash.type));
+
+	rhash.blocksize = alg->cra_blocksize;
+	rhash.digestsize = salg->digestsize;
+
+	return nla_put(skb, CRYPTOCFGA_REPORT_HASH, sizeof(rhash), &rhash);
+}
+#else
+static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+	return -ENOSYS;
+}
+#endif
+
+static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg)
+	__maybe_unused;
+static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg)
+{
+	struct shash_alg *salg = __crypto_shash_alg(alg);
+
+	seq_printf(m, "type         : shash\n");
+	seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
+	seq_printf(m, "digestsize   : %u\n", salg->digestsize);
+}
+
+static const struct crypto_type crypto_shash_type = {
+	.extsize = crypto_alg_extsize,
+	.init_tfm = crypto_shash_init_tfm,
+	.free = crypto_shash_free_instance,
+#ifdef CONFIG_PROC_FS
+	.show = crypto_shash_show,
+#endif
+	.report = crypto_shash_report,
+	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
+	.maskset = CRYPTO_ALG_TYPE_MASK,
+	.type = CRYPTO_ALG_TYPE_SHASH,
+	.tfmsize = offsetof(struct crypto_shash, base),
+};
+
+int crypto_grab_shash(struct crypto_shash_spawn *spawn,
+		      struct crypto_instance *inst,
+		      const char *name, u32 type, u32 mask)
+{
+	spawn->base.frontend = &crypto_shash_type;
+	return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_grab_shash);
+
+struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
+					u32 mask)
+{
+	return crypto_alloc_tfm(alg_name, &crypto_shash_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_shash);
+
+int crypto_has_shash(const char *alg_name, u32 type, u32 mask)
+{
+	return crypto_type_has_alg(alg_name, &crypto_shash_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_has_shash);
+
+static int shash_prepare_alg(struct shash_alg *alg)
+{
+	struct crypto_alg *base = &alg->base;
+
+	if (alg->digestsize > HASH_MAX_DIGESTSIZE ||
+	    alg->descsize > HASH_MAX_DESCSIZE ||
+	    alg->statesize > HASH_MAX_STATESIZE)
+		return -EINVAL;
+
+	if (base->cra_alignmask > MAX_SHASH_ALIGNMASK)
+		return -EINVAL;
+
+	if ((alg->export && !alg->import) || (alg->import && !alg->export))
+		return -EINVAL;
+
+	base->cra_type = &crypto_shash_type;
+	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+	base->cra_flags |= CRYPTO_ALG_TYPE_SHASH;
+
+	if (!alg->finup)
+		alg->finup = shash_finup_unaligned;
+	if (!alg->digest)
+		alg->digest = shash_digest_unaligned;
+	if (!alg->export) {
+		alg->export = shash_default_export;
+		alg->import = shash_default_import;
+		alg->statesize = alg->descsize;
+	}
+	if (!alg->setkey)
+		alg->setkey = shash_no_setkey;
+
+	return 0;
+}
+
+int crypto_register_shash(struct shash_alg *alg)
+{
+	struct crypto_alg *base = &alg->base;
+	int err;
+
+	err = shash_prepare_alg(alg);
+	if (err)
+		return err;
+
+	return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_shash);
+
+void crypto_unregister_shash(struct shash_alg *alg)
+{
+	crypto_unregister_alg(&alg->base);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_shash);
+
+int crypto_register_shashes(struct shash_alg *algs, int count)
+{
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		ret = crypto_register_shash(&algs[i]);
+		if (ret)
+			goto err;
+	}
+
+	return 0;
+
+err:
+	for (--i; i >= 0; --i)
+		crypto_unregister_shash(&algs[i]);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_register_shashes);
+
+void crypto_unregister_shashes(struct shash_alg *algs, int count)
+{
+	int i;
+
+	for (i = count - 1; i >= 0; --i)
+		crypto_unregister_shash(&algs[i]);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_shashes);
+
+int shash_register_instance(struct crypto_template *tmpl,
+			    struct shash_instance *inst)
+{
+	int err;
+
+	if (WARN_ON(!inst->free))
+		return -EINVAL;
+
+	err = shash_prepare_alg(&inst->alg);
+	if (err)
+		return err;
+
+	return crypto_register_instance(tmpl, shash_crypto_instance(inst));
+}
+EXPORT_SYMBOL_GPL(shash_register_instance);
+
+void shash_free_singlespawn_instance(struct shash_instance *inst)
+{
+	crypto_drop_spawn(shash_instance_ctx(inst));
+	kfree(inst);
+}
+EXPORT_SYMBOL_GPL(shash_free_singlespawn_instance);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Synchronous cryptographic hash type");