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, 502 insertions, 0 deletions

diff --git a/arch/s390/crypto/des_s390.c b/arch/s390/crypto/des_s390.c
new file mode 100644
index 000000000..8e75b83a5
--- /dev/null
+++ b/arch/s390/crypto/des_s390.c
@@ -0,0 +1,502 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Cryptographic API.
+ *
+ * s390 implementation of the DES Cipher Algorithm.
+ *
+ * Copyright IBM Corp. 2003, 2011
+ * Author(s): Thomas Spatzier
+ *	      Jan Glauber (jan.glauber@de.ibm.com)
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/cpufeature.h>
+#include <linux/crypto.h>
+#include <linux/fips.h>
+#include <linux/mutex.h>
+#include <crypto/algapi.h>
+#include <crypto/internal/des.h>
+#include <crypto/internal/skcipher.h>
+#include <asm/cpacf.h>
+
+#define DES3_KEY_SIZE	(3 * DES_KEY_SIZE)
+
+static u8 *ctrblk;
+static DEFINE_MUTEX(ctrblk_lock);
+
+static cpacf_mask_t km_functions, kmc_functions, kmctr_functions;
+
+struct s390_des_ctx {
+	u8 iv[DES_BLOCK_SIZE];
+	u8 key[DES3_KEY_SIZE];
+};
+
+static int des_setkey(struct crypto_tfm *tfm, const u8 *key,
+		      unsigned int key_len)
+{
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
+	int err;
+
+	err = crypto_des_verify_key(tfm, key);
+	if (err)
+		return err;
+
+	memcpy(ctx->key, key, key_len);
+	return 0;
+}
+
+static int des_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
+			       unsigned int key_len)
+{
+	return des_setkey(crypto_skcipher_tfm(tfm), key, key_len);
+}
+
+static void s390_des_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+{
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	cpacf_km(CPACF_KM_DEA, ctx->key, out, in, DES_BLOCK_SIZE);
+}
+
+static void s390_des_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+{
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	cpacf_km(CPACF_KM_DEA | CPACF_DECRYPT,
+		 ctx->key, out, in, DES_BLOCK_SIZE);
+}
+
+static struct crypto_alg des_alg = {
+	.cra_name		=	"des",
+	.cra_driver_name	=	"des-s390",
+	.cra_priority		=	300,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	DES_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	DES_KEY_SIZE,
+			.cia_max_keysize	=	DES_KEY_SIZE,
+			.cia_setkey		=	des_setkey,
+			.cia_encrypt		=	s390_des_encrypt,
+			.cia_decrypt		=	s390_des_decrypt,
+		}
+	}
+};
+
+static int ecb_desall_crypt(struct skcipher_request *req, unsigned long fc)
+{
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	struct s390_des_ctx *ctx = crypto_skcipher_ctx(tfm);
+	struct skcipher_walk walk;
+	unsigned int nbytes, n;
+	int ret;
+
+	ret = skcipher_walk_virt(&walk, req, false);
+	while ((nbytes = walk.nbytes) != 0) {
+		/* only use complete blocks */
+		n = nbytes & ~(DES_BLOCK_SIZE - 1);
+		cpacf_km(fc, ctx->key, walk.dst.virt.addr,
+			 walk.src.virt.addr, n);
+		ret = skcipher_walk_done(&walk, nbytes - n);
+	}
+	return ret;
+}
+
+static int cbc_desall_crypt(struct skcipher_request *req, unsigned long fc)
+{
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	struct s390_des_ctx *ctx = crypto_skcipher_ctx(tfm);
+	struct skcipher_walk walk;
+	unsigned int nbytes, n;
+	int ret;
+	struct {
+		u8 iv[DES_BLOCK_SIZE];
+		u8 key[DES3_KEY_SIZE];
+	} param;
+
+	ret = skcipher_walk_virt(&walk, req, false);
+	if (ret)
+		return ret;
+	memcpy(param.iv, walk.iv, DES_BLOCK_SIZE);
+	memcpy(param.key, ctx->key, DES3_KEY_SIZE);
+	while ((nbytes = walk.nbytes) != 0) {
+		/* only use complete blocks */
+		n = nbytes & ~(DES_BLOCK_SIZE - 1);
+		cpacf_kmc(fc, &param, walk.dst.virt.addr,
+			  walk.src.virt.addr, n);
+		memcpy(walk.iv, param.iv, DES_BLOCK_SIZE);
+		ret = skcipher_walk_done(&walk, nbytes - n);
+	}
+	return ret;
+}
+
+static int ecb_des_encrypt(struct skcipher_request *req)
+{
+	return ecb_desall_crypt(req, CPACF_KM_DEA);
+}
+
+static int ecb_des_decrypt(struct skcipher_request *req)
+{
+	return ecb_desall_crypt(req, CPACF_KM_DEA | CPACF_DECRYPT);
+}
+
+static struct skcipher_alg ecb_des_alg = {
+	.base.cra_name		=	"ecb(des)",
+	.base.cra_driver_name	=	"ecb-des-s390",
+	.base.cra_priority	=	400,	/* combo: des + ecb */
+	.base.cra_blocksize	=	DES_BLOCK_SIZE,
+	.base.cra_ctxsize	=	sizeof(struct s390_des_ctx),
+	.base.cra_module	=	THIS_MODULE,
+	.min_keysize		=	DES_KEY_SIZE,
+	.max_keysize		=	DES_KEY_SIZE,
+	.setkey			=	des_setkey_skcipher,
+	.encrypt		=	ecb_des_encrypt,
+	.decrypt		=	ecb_des_decrypt,
+};
+
+static int cbc_des_encrypt(struct skcipher_request *req)
+{
+	return cbc_desall_crypt(req, CPACF_KMC_DEA);
+}
+
+static int cbc_des_decrypt(struct skcipher_request *req)
+{
+	return cbc_desall_crypt(req, CPACF_KMC_DEA | CPACF_DECRYPT);
+}
+
+static struct skcipher_alg cbc_des_alg = {
+	.base.cra_name		=	"cbc(des)",
+	.base.cra_driver_name	=	"cbc-des-s390",
+	.base.cra_priority	=	400,	/* combo: des + cbc */
+	.base.cra_blocksize	=	DES_BLOCK_SIZE,
+	.base.cra_ctxsize	=	sizeof(struct s390_des_ctx),
+	.base.cra_module	=	THIS_MODULE,
+	.min_keysize		=	DES_KEY_SIZE,
+	.max_keysize		=	DES_KEY_SIZE,
+	.ivsize			=	DES_BLOCK_SIZE,
+	.setkey			=	des_setkey_skcipher,
+	.encrypt		=	cbc_des_encrypt,
+	.decrypt		=	cbc_des_decrypt,
+};
+
+/*
+ * RFC2451:
+ *
+ *   For DES-EDE3, there is no known need to reject weak or
+ *   complementation keys.  Any weakness is obviated by the use of
+ *   multiple keys.
+ *
+ *   However, if the first two or last two independent 64-bit keys are
+ *   equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the
+ *   same as DES.  Implementers MUST reject keys that exhibit this
+ *   property.
+ *
+ *   In fips mode additionally check for all 3 keys are unique.
+ *
+ */
+static int des3_setkey(struct crypto_tfm *tfm, const u8 *key,
+		       unsigned int key_len)
+{
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
+	int err;
+
+	err = crypto_des3_ede_verify_key(tfm, key);
+	if (err)
+		return err;
+
+	memcpy(ctx->key, key, key_len);
+	return 0;
+}
+
+static int des3_setkey_skcipher(struct crypto_skcipher *tfm, const u8 *key,
+				unsigned int key_len)
+{
+	return des3_setkey(crypto_skcipher_tfm(tfm), key, key_len);
+}
+
+static void des3_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	cpacf_km(CPACF_KM_TDEA_192, ctx->key, dst, src, DES_BLOCK_SIZE);
+}
+
+static void des3_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
+{
+	struct s390_des_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	cpacf_km(CPACF_KM_TDEA_192 | CPACF_DECRYPT,
+		 ctx->key, dst, src, DES_BLOCK_SIZE);
+}
+
+static struct crypto_alg des3_alg = {
+	.cra_name		=	"des3_ede",
+	.cra_driver_name	=	"des3_ede-s390",
+	.cra_priority		=	300,
+	.cra_flags		=	CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize		=	DES_BLOCK_SIZE,
+	.cra_ctxsize		=	sizeof(struct s390_des_ctx),
+	.cra_module		=	THIS_MODULE,
+	.cra_u			=	{
+		.cipher = {
+			.cia_min_keysize	=	DES3_KEY_SIZE,
+			.cia_max_keysize	=	DES3_KEY_SIZE,
+			.cia_setkey		=	des3_setkey,
+			.cia_encrypt		=	des3_encrypt,
+			.cia_decrypt		=	des3_decrypt,
+		}
+	}
+};
+
+static int ecb_des3_encrypt(struct skcipher_request *req)
+{
+	return ecb_desall_crypt(req, CPACF_KM_TDEA_192);
+}
+
+static int ecb_des3_decrypt(struct skcipher_request *req)
+{
+	return ecb_desall_crypt(req, CPACF_KM_TDEA_192 | CPACF_DECRYPT);
+}
+
+static struct skcipher_alg ecb_des3_alg = {
+	.base.cra_name		=	"ecb(des3_ede)",
+	.base.cra_driver_name	=	"ecb-des3_ede-s390",
+	.base.cra_priority	=	400,	/* combo: des3 + ecb */
+	.base.cra_blocksize	=	DES_BLOCK_SIZE,
+	.base.cra_ctxsize	=	sizeof(struct s390_des_ctx),
+	.base.cra_module	=	THIS_MODULE,
+	.min_keysize		=	DES3_KEY_SIZE,
+	.max_keysize		=	DES3_KEY_SIZE,
+	.setkey			=	des3_setkey_skcipher,
+	.encrypt		=	ecb_des3_encrypt,
+	.decrypt		=	ecb_des3_decrypt,
+};
+
+static int cbc_des3_encrypt(struct skcipher_request *req)
+{
+	return cbc_desall_crypt(req, CPACF_KMC_TDEA_192);
+}
+
+static int cbc_des3_decrypt(struct skcipher_request *req)
+{
+	return cbc_desall_crypt(req, CPACF_KMC_TDEA_192 | CPACF_DECRYPT);
+}
+
+static struct skcipher_alg cbc_des3_alg = {
+	.base.cra_name		=	"cbc(des3_ede)",
+	.base.cra_driver_name	=	"cbc-des3_ede-s390",
+	.base.cra_priority	=	400,	/* combo: des3 + cbc */
+	.base.cra_blocksize	=	DES_BLOCK_SIZE,
+	.base.cra_ctxsize	=	sizeof(struct s390_des_ctx),
+	.base.cra_module	=	THIS_MODULE,
+	.min_keysize		=	DES3_KEY_SIZE,
+	.max_keysize		=	DES3_KEY_SIZE,
+	.ivsize			=	DES_BLOCK_SIZE,
+	.setkey			=	des3_setkey_skcipher,
+	.encrypt		=	cbc_des3_encrypt,
+	.decrypt		=	cbc_des3_decrypt,
+};
+
+static unsigned int __ctrblk_init(u8 *ctrptr, u8 *iv, unsigned int nbytes)
+{
+	unsigned int i, n;
+
+	/* align to block size, max. PAGE_SIZE */
+	n = (nbytes > PAGE_SIZE) ? PAGE_SIZE : nbytes & ~(DES_BLOCK_SIZE - 1);
+	memcpy(ctrptr, iv, DES_BLOCK_SIZE);
+	for (i = (n / DES_BLOCK_SIZE) - 1; i > 0; i--) {
+		memcpy(ctrptr + DES_BLOCK_SIZE, ctrptr, DES_BLOCK_SIZE);
+		crypto_inc(ctrptr + DES_BLOCK_SIZE, DES_BLOCK_SIZE);
+		ctrptr += DES_BLOCK_SIZE;
+	}
+	return n;
+}
+
+static int ctr_desall_crypt(struct skcipher_request *req, unsigned long fc)
+{
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	struct s390_des_ctx *ctx = crypto_skcipher_ctx(tfm);
+	u8 buf[DES_BLOCK_SIZE], *ctrptr;
+	struct skcipher_walk walk;
+	unsigned int n, nbytes;
+	int ret, locked;
+
+	locked = mutex_trylock(&ctrblk_lock);
+
+	ret = skcipher_walk_virt(&walk, req, false);
+	while ((nbytes = walk.nbytes) >= DES_BLOCK_SIZE) {
+		n = DES_BLOCK_SIZE;
+		if (nbytes >= 2*DES_BLOCK_SIZE && locked)
+			n = __ctrblk_init(ctrblk, walk.iv, nbytes);
+		ctrptr = (n > DES_BLOCK_SIZE) ? ctrblk : walk.iv;
+		cpacf_kmctr(fc, ctx->key, walk.dst.virt.addr,
+			    walk.src.virt.addr, n, ctrptr);
+		if (ctrptr == ctrblk)
+			memcpy(walk.iv, ctrptr + n - DES_BLOCK_SIZE,
+				DES_BLOCK_SIZE);
+		crypto_inc(walk.iv, DES_BLOCK_SIZE);
+		ret = skcipher_walk_done(&walk, nbytes - n);
+	}
+	if (locked)
+		mutex_unlock(&ctrblk_lock);
+	/* final block may be < DES_BLOCK_SIZE, copy only nbytes */
+	if (nbytes) {
+		cpacf_kmctr(fc, ctx->key, buf, walk.src.virt.addr,
+			    DES_BLOCK_SIZE, walk.iv);
+		memcpy(walk.dst.virt.addr, buf, nbytes);
+		crypto_inc(walk.iv, DES_BLOCK_SIZE);
+		ret = skcipher_walk_done(&walk, 0);
+	}
+	return ret;
+}
+
+static int ctr_des_crypt(struct skcipher_request *req)
+{
+	return ctr_desall_crypt(req, CPACF_KMCTR_DEA);
+}
+
+static struct skcipher_alg ctr_des_alg = {
+	.base.cra_name		=	"ctr(des)",
+	.base.cra_driver_name	=	"ctr-des-s390",
+	.base.cra_priority	=	400,	/* combo: des + ctr */
+	.base.cra_blocksize	=	1,
+	.base.cra_ctxsize	=	sizeof(struct s390_des_ctx),
+	.base.cra_module	=	THIS_MODULE,
+	.min_keysize		=	DES_KEY_SIZE,
+	.max_keysize		=	DES_KEY_SIZE,
+	.ivsize			=	DES_BLOCK_SIZE,
+	.setkey			=	des_setkey_skcipher,
+	.encrypt		=	ctr_des_crypt,
+	.decrypt		=	ctr_des_crypt,
+	.chunksize		=	DES_BLOCK_SIZE,
+};
+
+static int ctr_des3_crypt(struct skcipher_request *req)
+{
+	return ctr_desall_crypt(req, CPACF_KMCTR_TDEA_192);
+}
+
+static struct skcipher_alg ctr_des3_alg = {
+	.base.cra_name		=	"ctr(des3_ede)",
+	.base.cra_driver_name	=	"ctr-des3_ede-s390",
+	.base.cra_priority	=	400,	/* combo: des3 + ede */
+	.base.cra_blocksize	=	1,
+	.base.cra_ctxsize	=	sizeof(struct s390_des_ctx),
+	.base.cra_module	=	THIS_MODULE,
+	.min_keysize		=	DES3_KEY_SIZE,
+	.max_keysize		=	DES3_KEY_SIZE,
+	.ivsize			=	DES_BLOCK_SIZE,
+	.setkey			=	des3_setkey_skcipher,
+	.encrypt		=	ctr_des3_crypt,
+	.decrypt		=	ctr_des3_crypt,
+	.chunksize		=	DES_BLOCK_SIZE,
+};
+
+static struct crypto_alg *des_s390_algs_ptr[2];
+static int des_s390_algs_num;
+static struct skcipher_alg *des_s390_skciphers_ptr[6];
+static int des_s390_skciphers_num;
+
+static int des_s390_register_alg(struct crypto_alg *alg)
+{
+	int ret;
+
+	ret = crypto_register_alg(alg);
+	if (!ret)
+		des_s390_algs_ptr[des_s390_algs_num++] = alg;
+	return ret;
+}
+
+static int des_s390_register_skcipher(struct skcipher_alg *alg)
+{
+	int ret;
+
+	ret = crypto_register_skcipher(alg);
+	if (!ret)
+		des_s390_skciphers_ptr[des_s390_skciphers_num++] = alg;
+	return ret;
+}
+
+static void des_s390_exit(void)
+{
+	while (des_s390_algs_num--)
+		crypto_unregister_alg(des_s390_algs_ptr[des_s390_algs_num]);
+	while (des_s390_skciphers_num--)
+		crypto_unregister_skcipher(des_s390_skciphers_ptr[des_s390_skciphers_num]);
+	if (ctrblk)
+		free_page((unsigned long) ctrblk);
+}
+
+static int __init des_s390_init(void)
+{
+	int ret;
+
+	/* Query available functions for KM, KMC and KMCTR */
+	cpacf_query(CPACF_KM, &km_functions);
+	cpacf_query(CPACF_KMC, &kmc_functions);
+	cpacf_query(CPACF_KMCTR, &kmctr_functions);
+
+	if (cpacf_test_func(&km_functions, CPACF_KM_DEA)) {
+		ret = des_s390_register_alg(&des_alg);
+		if (ret)
+			goto out_err;
+		ret = des_s390_register_skcipher(&ecb_des_alg);
+		if (ret)
+			goto out_err;
+	}
+	if (cpacf_test_func(&kmc_functions, CPACF_KMC_DEA)) {
+		ret = des_s390_register_skcipher(&cbc_des_alg);
+		if (ret)
+			goto out_err;
+	}
+	if (cpacf_test_func(&km_functions, CPACF_KM_TDEA_192)) {
+		ret = des_s390_register_alg(&des3_alg);
+		if (ret)
+			goto out_err;
+		ret = des_s390_register_skcipher(&ecb_des3_alg);
+		if (ret)
+			goto out_err;
+	}
+	if (cpacf_test_func(&kmc_functions, CPACF_KMC_TDEA_192)) {
+		ret = des_s390_register_skcipher(&cbc_des3_alg);
+		if (ret)
+			goto out_err;
+	}
+
+	if (cpacf_test_func(&kmctr_functions, CPACF_KMCTR_DEA) ||
+	    cpacf_test_func(&kmctr_functions, CPACF_KMCTR_TDEA_192)) {
+		ctrblk = (u8 *) __get_free_page(GFP_KERNEL);
+		if (!ctrblk) {
+			ret = -ENOMEM;
+			goto out_err;
+		}
+	}
+
+	if (cpacf_test_func(&kmctr_functions, CPACF_KMCTR_DEA)) {
+		ret = des_s390_register_skcipher(&ctr_des_alg);
+		if (ret)
+			goto out_err;
+	}
+	if (cpacf_test_func(&kmctr_functions, CPACF_KMCTR_TDEA_192)) {
+		ret = des_s390_register_skcipher(&ctr_des3_alg);
+		if (ret)
+			goto out_err;
+	}
+
+	return 0;
+out_err:
+	des_s390_exit();
+	return ret;
+}
+
+module_cpu_feature_match(S390_CPU_FEATURE_MSA, des_s390_init);
+module_exit(des_s390_exit);
+
+MODULE_ALIAS_CRYPTO("des");
+MODULE_ALIAS_CRYPTO("des3_ede");
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms");