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(). ... --- drivers/crypto/nx/nx-aes-gcm.c | 505 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 505 insertions(+) create mode 100644 drivers/crypto/nx/nx-aes-gcm.c (limited to 'drivers/crypto/nx/nx-aes-gcm.c') diff --git a/drivers/crypto/nx/nx-aes-gcm.c b/drivers/crypto/nx/nx-aes-gcm.c new file mode 100644 index 000000000..4a796318b --- /dev/null +++ b/drivers/crypto/nx/nx-aes-gcm.c @@ -0,0 +1,505 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AES GCM routines supporting the Power 7+ Nest Accelerators driver + * + * Copyright (C) 2012 International Business Machines Inc. + * + * Author: Kent Yoder + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "nx_csbcpb.h" +#include "nx.h" + + +static int gcm_aes_nx_set_key(struct crypto_aead *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_aead_ctx(tfm); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct nx_csbcpb *csbcpb_aead = nx_ctx->csbcpb_aead; + + nx_ctx_init(nx_ctx, HCOP_FC_AES); + + switch (key_len) { + case AES_KEYSIZE_128: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_128); + NX_CPB_SET_KEY_SIZE(csbcpb_aead, NX_KS_AES_128); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_128]; + break; + case AES_KEYSIZE_192: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_192); + NX_CPB_SET_KEY_SIZE(csbcpb_aead, NX_KS_AES_192); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_192]; + break; + case AES_KEYSIZE_256: + NX_CPB_SET_KEY_SIZE(csbcpb, NX_KS_AES_256); + NX_CPB_SET_KEY_SIZE(csbcpb_aead, NX_KS_AES_256); + nx_ctx->ap = &nx_ctx->props[NX_PROPS_AES_256]; + break; + default: + return -EINVAL; + } + + csbcpb->cpb.hdr.mode = NX_MODE_AES_GCM; + memcpy(csbcpb->cpb.aes_gcm.key, in_key, key_len); + + csbcpb_aead->cpb.hdr.mode = NX_MODE_AES_GCA; + memcpy(csbcpb_aead->cpb.aes_gca.key, in_key, key_len); + + return 0; +} + +static int gcm4106_aes_nx_set_key(struct crypto_aead *tfm, + const u8 *in_key, + unsigned int key_len) +{ + struct nx_crypto_ctx *nx_ctx = crypto_aead_ctx(tfm); + char *nonce = nx_ctx->priv.gcm.nonce; + int rc; + + if (key_len < 4) + return -EINVAL; + + key_len -= 4; + + rc = gcm_aes_nx_set_key(tfm, in_key, key_len); + if (rc) + goto out; + + memcpy(nonce, in_key + key_len, 4); +out: + return rc; +} + +static int gcm4106_aes_nx_setauthsize(struct crypto_aead *tfm, + unsigned int authsize) +{ + switch (authsize) { + case 8: + case 12: + case 16: + break; + default: + return -EINVAL; + } + + return 0; +} + +static int nx_gca(struct nx_crypto_ctx *nx_ctx, + struct aead_request *req, + u8 *out, + unsigned int assoclen) +{ + int rc; + struct nx_csbcpb *csbcpb_aead = nx_ctx->csbcpb_aead; + struct scatter_walk walk; + struct nx_sg *nx_sg = nx_ctx->in_sg; + unsigned int nbytes = assoclen; + unsigned int processed = 0, to_process; + unsigned int max_sg_len; + + if (nbytes <= AES_BLOCK_SIZE) { + scatterwalk_start(&walk, req->src); + scatterwalk_copychunks(out, &walk, nbytes, SCATTERWALK_FROM_SG); + scatterwalk_done(&walk, SCATTERWALK_FROM_SG, 0); + return 0; + } + + NX_CPB_FDM(csbcpb_aead) &= ~NX_FDM_CONTINUATION; + + /* page_limit: number of sg entries that fit on one page */ + max_sg_len = min_t(u64, nx_driver.of.max_sg_len/sizeof(struct nx_sg), + nx_ctx->ap->sglen); + max_sg_len = min_t(u64, max_sg_len, + nx_ctx->ap->databytelen/NX_PAGE_SIZE); + + do { + /* + * to_process: the data chunk to process in this update. + * This value is bound by sg list limits. + */ + to_process = min_t(u64, nbytes - processed, + nx_ctx->ap->databytelen); + to_process = min_t(u64, to_process, + NX_PAGE_SIZE * (max_sg_len - 1)); + + nx_sg = nx_walk_and_build(nx_ctx->in_sg, max_sg_len, + req->src, processed, &to_process); + + if ((to_process + processed) < nbytes) + NX_CPB_FDM(csbcpb_aead) |= NX_FDM_INTERMEDIATE; + else + NX_CPB_FDM(csbcpb_aead) &= ~NX_FDM_INTERMEDIATE; + + nx_ctx->op_aead.inlen = (nx_ctx->in_sg - nx_sg) + * sizeof(struct nx_sg); + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op_aead, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + return rc; + + memcpy(csbcpb_aead->cpb.aes_gca.in_pat, + csbcpb_aead->cpb.aes_gca.out_pat, + AES_BLOCK_SIZE); + NX_CPB_FDM(csbcpb_aead) |= NX_FDM_CONTINUATION; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(assoclen, &(nx_ctx->stats->aes_bytes)); + + processed += to_process; + } while (processed < nbytes); + + memcpy(out, csbcpb_aead->cpb.aes_gca.out_pat, AES_BLOCK_SIZE); + + return rc; +} + +static int gmac(struct aead_request *req, const u8 *iv, unsigned int assoclen) +{ + int rc; + struct nx_crypto_ctx *nx_ctx = + crypto_aead_ctx(crypto_aead_reqtfm(req)); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + struct nx_sg *nx_sg; + unsigned int nbytes = assoclen; + unsigned int processed = 0, to_process; + unsigned int max_sg_len; + + /* Set GMAC mode */ + csbcpb->cpb.hdr.mode = NX_MODE_AES_GMAC; + + NX_CPB_FDM(csbcpb) &= ~NX_FDM_CONTINUATION; + + /* page_limit: number of sg entries that fit on one page */ + max_sg_len = min_t(u64, nx_driver.of.max_sg_len/sizeof(struct nx_sg), + nx_ctx->ap->sglen); + max_sg_len = min_t(u64, max_sg_len, + nx_ctx->ap->databytelen/NX_PAGE_SIZE); + + /* Copy IV */ + memcpy(csbcpb->cpb.aes_gcm.iv_or_cnt, iv, AES_BLOCK_SIZE); + + do { + /* + * to_process: the data chunk to process in this update. + * This value is bound by sg list limits. + */ + to_process = min_t(u64, nbytes - processed, + nx_ctx->ap->databytelen); + to_process = min_t(u64, to_process, + NX_PAGE_SIZE * (max_sg_len - 1)); + + nx_sg = nx_walk_and_build(nx_ctx->in_sg, max_sg_len, + req->src, processed, &to_process); + + if ((to_process + processed) < nbytes) + NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE; + else + NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE; + + nx_ctx->op.inlen = (nx_ctx->in_sg - nx_sg) + * sizeof(struct nx_sg); + + csbcpb->cpb.aes_gcm.bit_length_data = 0; + csbcpb->cpb.aes_gcm.bit_length_aad = 8 * nbytes; + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + memcpy(csbcpb->cpb.aes_gcm.in_pat_or_aad, + csbcpb->cpb.aes_gcm.out_pat_or_mac, AES_BLOCK_SIZE); + memcpy(csbcpb->cpb.aes_gcm.in_s0, + csbcpb->cpb.aes_gcm.out_s0, AES_BLOCK_SIZE); + + NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(assoclen, &(nx_ctx->stats->aes_bytes)); + + processed += to_process; + } while (processed < nbytes); + +out: + /* Restore GCM mode */ + csbcpb->cpb.hdr.mode = NX_MODE_AES_GCM; + return rc; +} + +static int gcm_empty(struct aead_request *req, const u8 *iv, int enc) +{ + int rc; + struct nx_crypto_ctx *nx_ctx = + crypto_aead_ctx(crypto_aead_reqtfm(req)); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + char out[AES_BLOCK_SIZE]; + struct nx_sg *in_sg, *out_sg; + int len; + + /* For scenarios where the input message is zero length, AES CTR mode + * may be used. Set the source data to be a single block (16B) of all + * zeros, and set the input IV value to be the same as the GMAC IV + * value. - nx_wb 4.8.1.3 */ + + /* Change to ECB mode */ + csbcpb->cpb.hdr.mode = NX_MODE_AES_ECB; + memcpy(csbcpb->cpb.aes_ecb.key, csbcpb->cpb.aes_gcm.key, + sizeof(csbcpb->cpb.aes_ecb.key)); + if (enc) + NX_CPB_FDM(csbcpb) |= NX_FDM_ENDE_ENCRYPT; + else + NX_CPB_FDM(csbcpb) &= ~NX_FDM_ENDE_ENCRYPT; + + len = AES_BLOCK_SIZE; + + /* Encrypt the counter/IV */ + in_sg = nx_build_sg_list(nx_ctx->in_sg, (u8 *) iv, + &len, nx_ctx->ap->sglen); + + if (len != AES_BLOCK_SIZE) + return -EINVAL; + + len = sizeof(out); + out_sg = nx_build_sg_list(nx_ctx->out_sg, (u8 *) out, &len, + nx_ctx->ap->sglen); + + if (len != sizeof(out)) + return -EINVAL; + + nx_ctx->op.inlen = (nx_ctx->in_sg - in_sg) * sizeof(struct nx_sg); + nx_ctx->op.outlen = (nx_ctx->out_sg - out_sg) * sizeof(struct nx_sg); + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + atomic_inc(&(nx_ctx->stats->aes_ops)); + + /* Copy out the auth tag */ + memcpy(csbcpb->cpb.aes_gcm.out_pat_or_mac, out, + crypto_aead_authsize(crypto_aead_reqtfm(req))); +out: + /* Restore XCBC mode */ + csbcpb->cpb.hdr.mode = NX_MODE_AES_GCM; + + /* + * ECB key uses the same region that GCM AAD and counter, so it's safe + * to just fill it with zeroes. + */ + memset(csbcpb->cpb.aes_ecb.key, 0, sizeof(csbcpb->cpb.aes_ecb.key)); + + return rc; +} + +static int gcm_aes_nx_crypt(struct aead_request *req, int enc, + unsigned int assoclen) +{ + struct nx_crypto_ctx *nx_ctx = + crypto_aead_ctx(crypto_aead_reqtfm(req)); + struct nx_gcm_rctx *rctx = aead_request_ctx(req); + struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; + unsigned int nbytes = req->cryptlen; + unsigned int processed = 0, to_process; + unsigned long irq_flags; + int rc = -EINVAL; + + spin_lock_irqsave(&nx_ctx->lock, irq_flags); + + /* initialize the counter */ + *(u32 *)&rctx->iv[NX_GCM_CTR_OFFSET] = 1; + + if (nbytes == 0) { + if (assoclen == 0) + rc = gcm_empty(req, rctx->iv, enc); + else + rc = gmac(req, rctx->iv, assoclen); + if (rc) + goto out; + else + goto mac; + } + + /* Process associated data */ + csbcpb->cpb.aes_gcm.bit_length_aad = assoclen * 8; + if (assoclen) { + rc = nx_gca(nx_ctx, req, csbcpb->cpb.aes_gcm.in_pat_or_aad, + assoclen); + if (rc) + goto out; + } + + /* Set flags for encryption */ + NX_CPB_FDM(csbcpb) &= ~NX_FDM_CONTINUATION; + if (enc) { + NX_CPB_FDM(csbcpb) |= NX_FDM_ENDE_ENCRYPT; + } else { + NX_CPB_FDM(csbcpb) &= ~NX_FDM_ENDE_ENCRYPT; + nbytes -= crypto_aead_authsize(crypto_aead_reqtfm(req)); + } + + do { + to_process = nbytes - processed; + + csbcpb->cpb.aes_gcm.bit_length_data = nbytes * 8; + rc = nx_build_sg_lists(nx_ctx, rctx->iv, req->dst, + req->src, &to_process, + processed + req->assoclen, + csbcpb->cpb.aes_gcm.iv_or_cnt); + + if (rc) + goto out; + + if ((to_process + processed) < nbytes) + NX_CPB_FDM(csbcpb) |= NX_FDM_INTERMEDIATE; + else + NX_CPB_FDM(csbcpb) &= ~NX_FDM_INTERMEDIATE; + + + rc = nx_hcall_sync(nx_ctx, &nx_ctx->op, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP); + if (rc) + goto out; + + memcpy(rctx->iv, csbcpb->cpb.aes_gcm.out_cnt, AES_BLOCK_SIZE); + memcpy(csbcpb->cpb.aes_gcm.in_pat_or_aad, + csbcpb->cpb.aes_gcm.out_pat_or_mac, AES_BLOCK_SIZE); + memcpy(csbcpb->cpb.aes_gcm.in_s0, + csbcpb->cpb.aes_gcm.out_s0, AES_BLOCK_SIZE); + + NX_CPB_FDM(csbcpb) |= NX_FDM_CONTINUATION; + + atomic_inc(&(nx_ctx->stats->aes_ops)); + atomic64_add(be32_to_cpu(csbcpb->csb.processed_byte_count), + &(nx_ctx->stats->aes_bytes)); + + processed += to_process; + } while (processed < nbytes); + +mac: + if (enc) { + /* copy out the auth tag */ + scatterwalk_map_and_copy( + csbcpb->cpb.aes_gcm.out_pat_or_mac, + req->dst, req->assoclen + nbytes, + crypto_aead_authsize(crypto_aead_reqtfm(req)), + SCATTERWALK_TO_SG); + } else { + u8 *itag = nx_ctx->priv.gcm.iauth_tag; + u8 *otag = csbcpb->cpb.aes_gcm.out_pat_or_mac; + + scatterwalk_map_and_copy( + itag, req->src, req->assoclen + nbytes, + crypto_aead_authsize(crypto_aead_reqtfm(req)), + SCATTERWALK_FROM_SG); + rc = crypto_memneq(itag, otag, + crypto_aead_authsize(crypto_aead_reqtfm(req))) ? + -EBADMSG : 0; + } +out: + spin_unlock_irqrestore(&nx_ctx->lock, irq_flags); + return rc; +} + +static int gcm_aes_nx_encrypt(struct aead_request *req) +{ + struct nx_gcm_rctx *rctx = aead_request_ctx(req); + char *iv = rctx->iv; + + memcpy(iv, req->iv, GCM_AES_IV_SIZE); + + return gcm_aes_nx_crypt(req, 1, req->assoclen); +} + +static int gcm_aes_nx_decrypt(struct aead_request *req) +{ + struct nx_gcm_rctx *rctx = aead_request_ctx(req); + char *iv = rctx->iv; + + memcpy(iv, req->iv, GCM_AES_IV_SIZE); + + return gcm_aes_nx_crypt(req, 0, req->assoclen); +} + +static int gcm4106_aes_nx_encrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = + crypto_aead_ctx(crypto_aead_reqtfm(req)); + struct nx_gcm_rctx *rctx = aead_request_ctx(req); + char *iv = rctx->iv; + char *nonce = nx_ctx->priv.gcm.nonce; + + memcpy(iv, nonce, NX_GCM4106_NONCE_LEN); + memcpy(iv + NX_GCM4106_NONCE_LEN, req->iv, 8); + + if (req->assoclen < 8) + return -EINVAL; + + return gcm_aes_nx_crypt(req, 1, req->assoclen - 8); +} + +static int gcm4106_aes_nx_decrypt(struct aead_request *req) +{ + struct nx_crypto_ctx *nx_ctx = + crypto_aead_ctx(crypto_aead_reqtfm(req)); + struct nx_gcm_rctx *rctx = aead_request_ctx(req); + char *iv = rctx->iv; + char *nonce = nx_ctx->priv.gcm.nonce; + + memcpy(iv, nonce, NX_GCM4106_NONCE_LEN); + memcpy(iv + NX_GCM4106_NONCE_LEN, req->iv, 8); + + if (req->assoclen < 8) + return -EINVAL; + + return gcm_aes_nx_crypt(req, 0, req->assoclen - 8); +} + +struct aead_alg nx_gcm_aes_alg = { + .base = { + .cra_name = "gcm(aes)", + .cra_driver_name = "gcm-aes-nx", + .cra_priority = 300, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_module = THIS_MODULE, + }, + .init = nx_crypto_ctx_aes_gcm_init, + .exit = nx_crypto_ctx_aead_exit, + .ivsize = GCM_AES_IV_SIZE, + .maxauthsize = AES_BLOCK_SIZE, + .setkey = gcm_aes_nx_set_key, + .encrypt = gcm_aes_nx_encrypt, + .decrypt = gcm_aes_nx_decrypt, +}; + +struct aead_alg nx_gcm4106_aes_alg = { + .base = { + .cra_name = "rfc4106(gcm(aes))", + .cra_driver_name = "rfc4106-gcm-aes-nx", + .cra_priority = 300, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct nx_crypto_ctx), + .cra_module = THIS_MODULE, + }, + .init = nx_crypto_ctx_aes_gcm_init, + .exit = nx_crypto_ctx_aead_exit, + .ivsize = GCM_RFC4106_IV_SIZE, + .maxauthsize = AES_BLOCK_SIZE, + .setkey = gcm4106_aes_nx_set_key, + .setauthsize = gcm4106_aes_nx_setauthsize, + .encrypt = gcm4106_aes_nx_encrypt, + .decrypt = gcm4106_aes_nx_decrypt, +}; -- cgit v1.2.3