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(). ... --- crypto/authencesn.c | 482 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 482 insertions(+) create mode 100644 crypto/authencesn.c (limited to 'crypto/authencesn.c') diff --git a/crypto/authencesn.c b/crypto/authencesn.c new file mode 100644 index 000000000..91424e791 --- /dev/null +++ b/crypto/authencesn.c @@ -0,0 +1,482 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * authencesn.c - AEAD wrapper for IPsec with extended sequence numbers, + * derived from authenc.c + * + * Copyright (C) 2010 secunet Security Networks AG + * Copyright (C) 2010 Steffen Klassert + * Copyright (c) 2015 Herbert Xu + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct authenc_esn_instance_ctx { + struct crypto_ahash_spawn auth; + struct crypto_skcipher_spawn enc; +}; + +struct crypto_authenc_esn_ctx { + unsigned int reqoff; + struct crypto_ahash *auth; + struct crypto_skcipher *enc; + struct crypto_sync_skcipher *null; +}; + +struct authenc_esn_request_ctx { + struct scatterlist src[2]; + struct scatterlist dst[2]; + char tail[]; +}; + +static void authenc_esn_request_complete(struct aead_request *req, int err) +{ + if (err != -EINPROGRESS) + aead_request_complete(req, err); +} + +static int crypto_authenc_esn_setauthsize(struct crypto_aead *authenc_esn, + unsigned int authsize) +{ + if (authsize > 0 && authsize < 4) + return -EINVAL; + + return 0; +} + +static int crypto_authenc_esn_setkey(struct crypto_aead *authenc_esn, const u8 *key, + unsigned int keylen) +{ + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn); + struct crypto_ahash *auth = ctx->auth; + struct crypto_skcipher *enc = ctx->enc; + struct crypto_authenc_keys keys; + int err = -EINVAL; + + if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) + goto out; + + crypto_ahash_clear_flags(auth, CRYPTO_TFM_REQ_MASK); + crypto_ahash_set_flags(auth, crypto_aead_get_flags(authenc_esn) & + CRYPTO_TFM_REQ_MASK); + err = crypto_ahash_setkey(auth, keys.authkey, keys.authkeylen); + if (err) + goto out; + + crypto_skcipher_clear_flags(enc, CRYPTO_TFM_REQ_MASK); + crypto_skcipher_set_flags(enc, crypto_aead_get_flags(authenc_esn) & + CRYPTO_TFM_REQ_MASK); + err = crypto_skcipher_setkey(enc, keys.enckey, keys.enckeylen); +out: + memzero_explicit(&keys, sizeof(keys)); + return err; +} + +static int crypto_authenc_esn_genicv_tail(struct aead_request *req, + unsigned int flags) +{ + struct crypto_aead *authenc_esn = crypto_aead_reqtfm(req); + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn); + struct authenc_esn_request_ctx *areq_ctx = aead_request_ctx(req); + struct crypto_ahash *auth = ctx->auth; + u8 *hash = PTR_ALIGN((u8 *)areq_ctx->tail, + crypto_ahash_alignmask(auth) + 1); + unsigned int authsize = crypto_aead_authsize(authenc_esn); + unsigned int assoclen = req->assoclen; + unsigned int cryptlen = req->cryptlen; + struct scatterlist *dst = req->dst; + u32 tmp[2]; + + /* Move high-order bits of sequence number back. */ + scatterwalk_map_and_copy(tmp, dst, 4, 4, 0); + scatterwalk_map_and_copy(tmp + 1, dst, assoclen + cryptlen, 4, 0); + scatterwalk_map_and_copy(tmp, dst, 0, 8, 1); + + scatterwalk_map_and_copy(hash, dst, assoclen + cryptlen, authsize, 1); + return 0; +} + +static void authenc_esn_geniv_ahash_done(void *data, int err) +{ + struct aead_request *req = data; + + err = err ?: crypto_authenc_esn_genicv_tail(req, 0); + aead_request_complete(req, err); +} + +static int crypto_authenc_esn_genicv(struct aead_request *req, + unsigned int flags) +{ + struct crypto_aead *authenc_esn = crypto_aead_reqtfm(req); + struct authenc_esn_request_ctx *areq_ctx = aead_request_ctx(req); + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn); + struct crypto_ahash *auth = ctx->auth; + u8 *hash = PTR_ALIGN((u8 *)areq_ctx->tail, + crypto_ahash_alignmask(auth) + 1); + struct ahash_request *ahreq = (void *)(areq_ctx->tail + ctx->reqoff); + unsigned int authsize = crypto_aead_authsize(authenc_esn); + unsigned int assoclen = req->assoclen; + unsigned int cryptlen = req->cryptlen; + struct scatterlist *dst = req->dst; + u32 tmp[2]; + + if (!authsize) + return 0; + + /* Move high-order bits of sequence number to the end. */ + scatterwalk_map_and_copy(tmp, dst, 0, 8, 0); + scatterwalk_map_and_copy(tmp, dst, 4, 4, 1); + scatterwalk_map_and_copy(tmp + 1, dst, assoclen + cryptlen, 4, 1); + + sg_init_table(areq_ctx->dst, 2); + dst = scatterwalk_ffwd(areq_ctx->dst, dst, 4); + + ahash_request_set_tfm(ahreq, auth); + ahash_request_set_crypt(ahreq, dst, hash, assoclen + cryptlen); + ahash_request_set_callback(ahreq, flags, + authenc_esn_geniv_ahash_done, req); + + return crypto_ahash_digest(ahreq) ?: + crypto_authenc_esn_genicv_tail(req, aead_request_flags(req)); +} + + +static void crypto_authenc_esn_encrypt_done(void *data, int err) +{ + struct aead_request *areq = data; + + if (!err) + err = crypto_authenc_esn_genicv(areq, 0); + + authenc_esn_request_complete(areq, err); +} + +static int crypto_authenc_esn_copy(struct aead_request *req, unsigned int len) +{ + struct crypto_aead *authenc_esn = crypto_aead_reqtfm(req); + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn); + SYNC_SKCIPHER_REQUEST_ON_STACK(skreq, ctx->null); + + skcipher_request_set_sync_tfm(skreq, ctx->null); + skcipher_request_set_callback(skreq, aead_request_flags(req), + NULL, NULL); + skcipher_request_set_crypt(skreq, req->src, req->dst, len, NULL); + + return crypto_skcipher_encrypt(skreq); +} + +static int crypto_authenc_esn_encrypt(struct aead_request *req) +{ + struct crypto_aead *authenc_esn = crypto_aead_reqtfm(req); + struct authenc_esn_request_ctx *areq_ctx = aead_request_ctx(req); + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn); + struct skcipher_request *skreq = (void *)(areq_ctx->tail + + ctx->reqoff); + struct crypto_skcipher *enc = ctx->enc; + unsigned int assoclen = req->assoclen; + unsigned int cryptlen = req->cryptlen; + struct scatterlist *src, *dst; + int err; + + sg_init_table(areq_ctx->src, 2); + src = scatterwalk_ffwd(areq_ctx->src, req->src, assoclen); + dst = src; + + if (req->src != req->dst) { + err = crypto_authenc_esn_copy(req, assoclen); + if (err) + return err; + + sg_init_table(areq_ctx->dst, 2); + dst = scatterwalk_ffwd(areq_ctx->dst, req->dst, assoclen); + } + + skcipher_request_set_tfm(skreq, enc); + skcipher_request_set_callback(skreq, aead_request_flags(req), + crypto_authenc_esn_encrypt_done, req); + skcipher_request_set_crypt(skreq, src, dst, cryptlen, req->iv); + + err = crypto_skcipher_encrypt(skreq); + if (err) + return err; + + return crypto_authenc_esn_genicv(req, aead_request_flags(req)); +} + +static int crypto_authenc_esn_decrypt_tail(struct aead_request *req, + unsigned int flags) +{ + struct crypto_aead *authenc_esn = crypto_aead_reqtfm(req); + unsigned int authsize = crypto_aead_authsize(authenc_esn); + struct authenc_esn_request_ctx *areq_ctx = aead_request_ctx(req); + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn); + struct skcipher_request *skreq = (void *)(areq_ctx->tail + + ctx->reqoff); + struct crypto_ahash *auth = ctx->auth; + u8 *ohash = PTR_ALIGN((u8 *)areq_ctx->tail, + crypto_ahash_alignmask(auth) + 1); + unsigned int cryptlen = req->cryptlen - authsize; + unsigned int assoclen = req->assoclen; + struct scatterlist *dst = req->dst; + u8 *ihash = ohash + crypto_ahash_digestsize(auth); + u32 tmp[2]; + + if (!authsize) + goto decrypt; + + /* Move high-order bits of sequence number back. */ + scatterwalk_map_and_copy(tmp, dst, 4, 4, 0); + scatterwalk_map_and_copy(tmp + 1, dst, assoclen + cryptlen, 4, 0); + scatterwalk_map_and_copy(tmp, dst, 0, 8, 1); + + if (crypto_memneq(ihash, ohash, authsize)) + return -EBADMSG; + +decrypt: + + sg_init_table(areq_ctx->dst, 2); + dst = scatterwalk_ffwd(areq_ctx->dst, dst, assoclen); + + skcipher_request_set_tfm(skreq, ctx->enc); + skcipher_request_set_callback(skreq, flags, + req->base.complete, req->base.data); + skcipher_request_set_crypt(skreq, dst, dst, cryptlen, req->iv); + + return crypto_skcipher_decrypt(skreq); +} + +static void authenc_esn_verify_ahash_done(void *data, int err) +{ + struct aead_request *req = data; + + err = err ?: crypto_authenc_esn_decrypt_tail(req, 0); + authenc_esn_request_complete(req, err); +} + +static int crypto_authenc_esn_decrypt(struct aead_request *req) +{ + struct crypto_aead *authenc_esn = crypto_aead_reqtfm(req); + struct authenc_esn_request_ctx *areq_ctx = aead_request_ctx(req); + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(authenc_esn); + struct ahash_request *ahreq = (void *)(areq_ctx->tail + ctx->reqoff); + unsigned int authsize = crypto_aead_authsize(authenc_esn); + struct crypto_ahash *auth = ctx->auth; + u8 *ohash = PTR_ALIGN((u8 *)areq_ctx->tail, + crypto_ahash_alignmask(auth) + 1); + unsigned int assoclen = req->assoclen; + unsigned int cryptlen = req->cryptlen; + u8 *ihash = ohash + crypto_ahash_digestsize(auth); + struct scatterlist *dst = req->dst; + u32 tmp[2]; + int err; + + cryptlen -= authsize; + + if (req->src != dst) { + err = crypto_authenc_esn_copy(req, assoclen + cryptlen); + if (err) + return err; + } + + scatterwalk_map_and_copy(ihash, req->src, assoclen + cryptlen, + authsize, 0); + + if (!authsize) + goto tail; + + /* Move high-order bits of sequence number to the end. */ + scatterwalk_map_and_copy(tmp, dst, 0, 8, 0); + scatterwalk_map_and_copy(tmp, dst, 4, 4, 1); + scatterwalk_map_and_copy(tmp + 1, dst, assoclen + cryptlen, 4, 1); + + sg_init_table(areq_ctx->dst, 2); + dst = scatterwalk_ffwd(areq_ctx->dst, dst, 4); + + ahash_request_set_tfm(ahreq, auth); + ahash_request_set_crypt(ahreq, dst, ohash, assoclen + cryptlen); + ahash_request_set_callback(ahreq, aead_request_flags(req), + authenc_esn_verify_ahash_done, req); + + err = crypto_ahash_digest(ahreq); + if (err) + return err; + +tail: + return crypto_authenc_esn_decrypt_tail(req, aead_request_flags(req)); +} + +static int crypto_authenc_esn_init_tfm(struct crypto_aead *tfm) +{ + struct aead_instance *inst = aead_alg_instance(tfm); + struct authenc_esn_instance_ctx *ictx = aead_instance_ctx(inst); + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(tfm); + struct crypto_ahash *auth; + struct crypto_skcipher *enc; + struct crypto_sync_skcipher *null; + int err; + + auth = crypto_spawn_ahash(&ictx->auth); + if (IS_ERR(auth)) + return PTR_ERR(auth); + + enc = crypto_spawn_skcipher(&ictx->enc); + err = PTR_ERR(enc); + if (IS_ERR(enc)) + goto err_free_ahash; + + null = crypto_get_default_null_skcipher(); + err = PTR_ERR(null); + if (IS_ERR(null)) + goto err_free_skcipher; + + ctx->auth = auth; + ctx->enc = enc; + ctx->null = null; + + ctx->reqoff = ALIGN(2 * crypto_ahash_digestsize(auth), + crypto_ahash_alignmask(auth) + 1); + + crypto_aead_set_reqsize( + tfm, + sizeof(struct authenc_esn_request_ctx) + + ctx->reqoff + + max_t(unsigned int, + crypto_ahash_reqsize(auth) + + sizeof(struct ahash_request), + sizeof(struct skcipher_request) + + crypto_skcipher_reqsize(enc))); + + return 0; + +err_free_skcipher: + crypto_free_skcipher(enc); +err_free_ahash: + crypto_free_ahash(auth); + return err; +} + +static void crypto_authenc_esn_exit_tfm(struct crypto_aead *tfm) +{ + struct crypto_authenc_esn_ctx *ctx = crypto_aead_ctx(tfm); + + crypto_free_ahash(ctx->auth); + crypto_free_skcipher(ctx->enc); + crypto_put_default_null_skcipher(); +} + +static void crypto_authenc_esn_free(struct aead_instance *inst) +{ + struct authenc_esn_instance_ctx *ctx = aead_instance_ctx(inst); + + crypto_drop_skcipher(&ctx->enc); + crypto_drop_ahash(&ctx->auth); + kfree(inst); +} + +static int crypto_authenc_esn_create(struct crypto_template *tmpl, + struct rtattr **tb) +{ + u32 mask; + struct aead_instance *inst; + struct authenc_esn_instance_ctx *ctx; + struct hash_alg_common *auth; + struct crypto_alg *auth_base; + struct skcipher_alg *enc; + int err; + + err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask); + if (err) + return err; + + inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); + if (!inst) + return -ENOMEM; + ctx = aead_instance_ctx(inst); + + err = crypto_grab_ahash(&ctx->auth, aead_crypto_instance(inst), + crypto_attr_alg_name(tb[1]), 0, mask); + if (err) + goto err_free_inst; + auth = crypto_spawn_ahash_alg(&ctx->auth); + auth_base = &auth->base; + + err = crypto_grab_skcipher(&ctx->enc, aead_crypto_instance(inst), + crypto_attr_alg_name(tb[2]), 0, mask); + if (err) + goto err_free_inst; + enc = crypto_spawn_skcipher_alg(&ctx->enc); + + err = -ENAMETOOLONG; + if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME, + "authencesn(%s,%s)", auth_base->cra_name, + enc->base.cra_name) >= CRYPTO_MAX_ALG_NAME) + goto err_free_inst; + + if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME, + "authencesn(%s,%s)", auth_base->cra_driver_name, + enc->base.cra_driver_name) >= CRYPTO_MAX_ALG_NAME) + goto err_free_inst; + + inst->alg.base.cra_priority = enc->base.cra_priority * 10 + + auth_base->cra_priority; + inst->alg.base.cra_blocksize = enc->base.cra_blocksize; + inst->alg.base.cra_alignmask = auth_base->cra_alignmask | + enc->base.cra_alignmask; + inst->alg.base.cra_ctxsize = sizeof(struct crypto_authenc_esn_ctx); + + inst->alg.ivsize = crypto_skcipher_alg_ivsize(enc); + inst->alg.chunksize = crypto_skcipher_alg_chunksize(enc); + inst->alg.maxauthsize = auth->digestsize; + + inst->alg.init = crypto_authenc_esn_init_tfm; + inst->alg.exit = crypto_authenc_esn_exit_tfm; + + inst->alg.setkey = crypto_authenc_esn_setkey; + inst->alg.setauthsize = crypto_authenc_esn_setauthsize; + inst->alg.encrypt = crypto_authenc_esn_encrypt; + inst->alg.decrypt = crypto_authenc_esn_decrypt; + + inst->free = crypto_authenc_esn_free; + + err = aead_register_instance(tmpl, inst); + if (err) { +err_free_inst: + crypto_authenc_esn_free(inst); + } + return err; +} + +static struct crypto_template crypto_authenc_esn_tmpl = { + .name = "authencesn", + .create = crypto_authenc_esn_create, + .module = THIS_MODULE, +}; + +static int __init crypto_authenc_esn_module_init(void) +{ + return crypto_register_template(&crypto_authenc_esn_tmpl); +} + +static void __exit crypto_authenc_esn_module_exit(void) +{ + crypto_unregister_template(&crypto_authenc_esn_tmpl); +} + +subsys_initcall(crypto_authenc_esn_module_init); +module_exit(crypto_authenc_esn_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Steffen Klassert "); +MODULE_DESCRIPTION("AEAD wrapper for IPsec with extended sequence numbers"); +MODULE_ALIAS_CRYPTO("authencesn"); -- cgit v1.2.3