From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- arch/s390/crypto/des_s390.c | 502 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 502 insertions(+) create mode 100644 arch/s390/crypto/des_s390.c (limited to 'arch/s390/crypto/des_s390.c') 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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, ¶m, 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"); -- cgit v1.2.3