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/allwinner/sun8i-ss/sun8i-ss-cipher.c | 486 +++++++++++++++++++++ 1 file changed, 486 insertions(+) create mode 100644 drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c (limited to 'drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c') diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c new file mode 100644 index 000000000..83c6dfad7 --- /dev/null +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c @@ -0,0 +1,486 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * sun8i-ss-cipher.c - hardware cryptographic offloader for + * Allwinner A80/A83T SoC + * + * Copyright (C) 2016-2019 Corentin LABBE + * + * This file add support for AES cipher with 128,192,256 bits keysize in + * CBC and ECB mode. + * + * You could find a link for the datasheet in Documentation/arm/sunxi.rst + */ + +#include +#include +#include +#include +#include +#include +#include +#include "sun8i-ss.h" + +static bool sun8i_ss_need_fallback(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct sun8i_ss_alg_template *algt = container_of(alg, struct sun8i_ss_alg_template, alg.skcipher); + struct scatterlist *in_sg = areq->src; + struct scatterlist *out_sg = areq->dst; + struct scatterlist *sg; + unsigned int todo, len; + + if (areq->cryptlen == 0 || areq->cryptlen % 16) { + algt->stat_fb_len++; + return true; + } + + if (sg_nents_for_len(areq->src, areq->cryptlen) > 8 || + sg_nents_for_len(areq->dst, areq->cryptlen) > 8) { + algt->stat_fb_sgnum++; + return true; + } + + len = areq->cryptlen; + sg = areq->src; + while (sg) { + todo = min(len, sg->length); + if ((todo % 16) != 0) { + algt->stat_fb_sglen++; + return true; + } + if (!IS_ALIGNED(sg->offset, 16)) { + algt->stat_fb_align++; + return true; + } + len -= todo; + sg = sg_next(sg); + } + len = areq->cryptlen; + sg = areq->dst; + while (sg) { + todo = min(len, sg->length); + if ((todo % 16) != 0) { + algt->stat_fb_sglen++; + return true; + } + if (!IS_ALIGNED(sg->offset, 16)) { + algt->stat_fb_align++; + return true; + } + len -= todo; + sg = sg_next(sg); + } + + /* SS need same numbers of SG (with same length) for source and destination */ + in_sg = areq->src; + out_sg = areq->dst; + while (in_sg && out_sg) { + if (in_sg->length != out_sg->length) + return true; + in_sg = sg_next(in_sg); + out_sg = sg_next(out_sg); + } + if (in_sg || out_sg) + return true; + return false; +} + +static int sun8i_ss_cipher_fallback(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq); + int err; + +#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct sun8i_ss_alg_template *algt; + + algt = container_of(alg, struct sun8i_ss_alg_template, alg.skcipher); + algt->stat_fb++; +#endif + skcipher_request_set_tfm(&rctx->fallback_req, op->fallback_tfm); + skcipher_request_set_callback(&rctx->fallback_req, areq->base.flags, + areq->base.complete, areq->base.data); + skcipher_request_set_crypt(&rctx->fallback_req, areq->src, areq->dst, + areq->cryptlen, areq->iv); + if (rctx->op_dir & SS_DECRYPTION) + err = crypto_skcipher_decrypt(&rctx->fallback_req); + else + err = crypto_skcipher_encrypt(&rctx->fallback_req); + return err; +} + +static int sun8i_ss_setup_ivs(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_ss_dev *ss = op->ss; + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq); + struct scatterlist *sg = areq->src; + unsigned int todo, offset; + unsigned int len = areq->cryptlen; + unsigned int ivsize = crypto_skcipher_ivsize(tfm); + struct sun8i_ss_flow *sf = &ss->flows[rctx->flow]; + int i = 0; + dma_addr_t a; + int err; + + rctx->ivlen = ivsize; + if (rctx->op_dir & SS_DECRYPTION) { + offset = areq->cryptlen - ivsize; + scatterwalk_map_and_copy(sf->biv, areq->src, offset, + ivsize, 0); + } + + /* we need to copy all IVs from source in case DMA is bi-directionnal */ + while (sg && len) { + if (sg_dma_len(sg) == 0) { + sg = sg_next(sg); + continue; + } + if (i == 0) + memcpy(sf->iv[0], areq->iv, ivsize); + a = dma_map_single(ss->dev, sf->iv[i], ivsize, DMA_TO_DEVICE); + if (dma_mapping_error(ss->dev, a)) { + memzero_explicit(sf->iv[i], ivsize); + dev_err(ss->dev, "Cannot DMA MAP IV\n"); + err = -EFAULT; + goto dma_iv_error; + } + rctx->p_iv[i] = a; + /* we need to setup all others IVs only in the decrypt way */ + if (rctx->op_dir & SS_ENCRYPTION) + return 0; + todo = min(len, sg_dma_len(sg)); + len -= todo; + i++; + if (i < MAX_SG) { + offset = sg->length - ivsize; + scatterwalk_map_and_copy(sf->iv[i], sg, offset, ivsize, 0); + } + rctx->niv = i; + sg = sg_next(sg); + } + + return 0; +dma_iv_error: + i--; + while (i >= 0) { + dma_unmap_single(ss->dev, rctx->p_iv[i], ivsize, DMA_TO_DEVICE); + memzero_explicit(sf->iv[i], ivsize); + i--; + } + return err; +} + +static int sun8i_ss_cipher(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_ss_dev *ss = op->ss; + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq); + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct sun8i_ss_alg_template *algt; + struct sun8i_ss_flow *sf = &ss->flows[rctx->flow]; + struct scatterlist *sg; + unsigned int todo, len, offset, ivsize; + int nr_sgs = 0; + int nr_sgd = 0; + int err = 0; + int nsgs = sg_nents_for_len(areq->src, areq->cryptlen); + int nsgd = sg_nents_for_len(areq->dst, areq->cryptlen); + int i; + + algt = container_of(alg, struct sun8i_ss_alg_template, alg.skcipher); + + dev_dbg(ss->dev, "%s %s %u %x IV(%p %u) key=%u\n", __func__, + crypto_tfm_alg_name(areq->base.tfm), + areq->cryptlen, + rctx->op_dir, areq->iv, crypto_skcipher_ivsize(tfm), + op->keylen); + +#ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG + algt->stat_req++; +#endif + + rctx->op_mode = ss->variant->op_mode[algt->ss_blockmode]; + rctx->method = ss->variant->alg_cipher[algt->ss_algo_id]; + rctx->keylen = op->keylen; + + rctx->p_key = dma_map_single(ss->dev, op->key, op->keylen, DMA_TO_DEVICE); + if (dma_mapping_error(ss->dev, rctx->p_key)) { + dev_err(ss->dev, "Cannot DMA MAP KEY\n"); + err = -EFAULT; + goto theend; + } + + ivsize = crypto_skcipher_ivsize(tfm); + if (areq->iv && crypto_skcipher_ivsize(tfm) > 0) { + err = sun8i_ss_setup_ivs(areq); + if (err) + goto theend_key; + } + if (areq->src == areq->dst) { + nr_sgs = dma_map_sg(ss->dev, areq->src, nsgs, DMA_BIDIRECTIONAL); + if (nr_sgs <= 0 || nr_sgs > 8) { + dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs); + err = -EINVAL; + goto theend_iv; + } + nr_sgd = nr_sgs; + } else { + nr_sgs = dma_map_sg(ss->dev, areq->src, nsgs, DMA_TO_DEVICE); + if (nr_sgs <= 0 || nr_sgs > 8) { + dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs); + err = -EINVAL; + goto theend_iv; + } + nr_sgd = dma_map_sg(ss->dev, areq->dst, nsgd, DMA_FROM_DEVICE); + if (nr_sgd <= 0 || nr_sgd > 8) { + dev_err(ss->dev, "Invalid sg number %d\n", nr_sgd); + err = -EINVAL; + goto theend_sgs; + } + } + + len = areq->cryptlen; + i = 0; + sg = areq->src; + while (i < nr_sgs && sg && len) { + if (sg_dma_len(sg) == 0) + goto sgs_next; + rctx->t_src[i].addr = sg_dma_address(sg); + todo = min(len, sg_dma_len(sg)); + rctx->t_src[i].len = todo / 4; + dev_dbg(ss->dev, "%s total=%u SGS(%d %u off=%d) todo=%u\n", __func__, + areq->cryptlen, i, rctx->t_src[i].len, sg->offset, todo); + len -= todo; + i++; +sgs_next: + sg = sg_next(sg); + } + if (len > 0) { + dev_err(ss->dev, "remaining len %d\n", len); + err = -EINVAL; + goto theend_sgs; + } + + len = areq->cryptlen; + i = 0; + sg = areq->dst; + while (i < nr_sgd && sg && len) { + if (sg_dma_len(sg) == 0) + goto sgd_next; + rctx->t_dst[i].addr = sg_dma_address(sg); + todo = min(len, sg_dma_len(sg)); + rctx->t_dst[i].len = todo / 4; + dev_dbg(ss->dev, "%s total=%u SGD(%d %u off=%d) todo=%u\n", __func__, + areq->cryptlen, i, rctx->t_dst[i].len, sg->offset, todo); + len -= todo; + i++; +sgd_next: + sg = sg_next(sg); + } + if (len > 0) { + dev_err(ss->dev, "remaining len %d\n", len); + err = -EINVAL; + goto theend_sgs; + } + + err = sun8i_ss_run_task(ss, rctx, crypto_tfm_alg_name(areq->base.tfm)); + +theend_sgs: + if (areq->src == areq->dst) { + dma_unmap_sg(ss->dev, areq->src, nsgs, DMA_BIDIRECTIONAL); + } else { + dma_unmap_sg(ss->dev, areq->src, nsgs, DMA_TO_DEVICE); + dma_unmap_sg(ss->dev, areq->dst, nsgd, DMA_FROM_DEVICE); + } + +theend_iv: + if (areq->iv && ivsize > 0) { + for (i = 0; i < rctx->niv; i++) { + dma_unmap_single(ss->dev, rctx->p_iv[i], ivsize, DMA_TO_DEVICE); + memzero_explicit(sf->iv[i], ivsize); + } + + offset = areq->cryptlen - ivsize; + if (rctx->op_dir & SS_DECRYPTION) { + memcpy(areq->iv, sf->biv, ivsize); + memzero_explicit(sf->biv, ivsize); + } else { + scatterwalk_map_and_copy(areq->iv, areq->dst, offset, + ivsize, 0); + } + } + +theend_key: + dma_unmap_single(ss->dev, rctx->p_key, op->keylen, DMA_TO_DEVICE); + +theend: + + return err; +} + +static int sun8i_ss_handle_cipher_request(struct crypto_engine *engine, void *areq) +{ + int err; + struct skcipher_request *breq = container_of(areq, struct skcipher_request, base); + + err = sun8i_ss_cipher(breq); + local_bh_disable(); + crypto_finalize_skcipher_request(engine, breq, err); + local_bh_enable(); + + return 0; +} + +int sun8i_ss_skdecrypt(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq); + struct crypto_engine *engine; + int e; + + memset(rctx, 0, sizeof(struct sun8i_cipher_req_ctx)); + rctx->op_dir = SS_DECRYPTION; + + if (sun8i_ss_need_fallback(areq)) + return sun8i_ss_cipher_fallback(areq); + + e = sun8i_ss_get_engine_number(op->ss); + engine = op->ss->flows[e].engine; + rctx->flow = e; + + return crypto_transfer_skcipher_request_to_engine(engine, areq); +} + +int sun8i_ss_skencrypt(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq); + struct crypto_engine *engine; + int e; + + memset(rctx, 0, sizeof(struct sun8i_cipher_req_ctx)); + rctx->op_dir = SS_ENCRYPTION; + + if (sun8i_ss_need_fallback(areq)) + return sun8i_ss_cipher_fallback(areq); + + e = sun8i_ss_get_engine_number(op->ss); + engine = op->ss->flows[e].engine; + rctx->flow = e; + + return crypto_transfer_skcipher_request_to_engine(engine, areq); +} + +int sun8i_ss_cipher_init(struct crypto_tfm *tfm) +{ + struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm); + struct sun8i_ss_alg_template *algt; + const char *name = crypto_tfm_alg_name(tfm); + struct crypto_skcipher *sktfm = __crypto_skcipher_cast(tfm); + struct skcipher_alg *alg = crypto_skcipher_alg(sktfm); + int err; + + memset(op, 0, sizeof(struct sun8i_cipher_tfm_ctx)); + + algt = container_of(alg, struct sun8i_ss_alg_template, alg.skcipher); + op->ss = algt->ss; + + op->fallback_tfm = crypto_alloc_skcipher(name, 0, CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(op->fallback_tfm)) { + dev_err(op->ss->dev, "ERROR: Cannot allocate fallback for %s %ld\n", + name, PTR_ERR(op->fallback_tfm)); + return PTR_ERR(op->fallback_tfm); + } + + sktfm->reqsize = sizeof(struct sun8i_cipher_req_ctx) + + crypto_skcipher_reqsize(op->fallback_tfm); + + + memcpy(algt->fbname, + crypto_tfm_alg_driver_name(crypto_skcipher_tfm(op->fallback_tfm)), + CRYPTO_MAX_ALG_NAME); + + op->enginectx.op.do_one_request = sun8i_ss_handle_cipher_request; + op->enginectx.op.prepare_request = NULL; + op->enginectx.op.unprepare_request = NULL; + + err = pm_runtime_resume_and_get(op->ss->dev); + if (err < 0) { + dev_err(op->ss->dev, "pm error %d\n", err); + goto error_pm; + } + + return 0; +error_pm: + crypto_free_skcipher(op->fallback_tfm); + return err; +} + +void sun8i_ss_cipher_exit(struct crypto_tfm *tfm) +{ + struct sun8i_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm); + + kfree_sensitive(op->key); + crypto_free_skcipher(op->fallback_tfm); + pm_runtime_put_sync(op->ss->dev); +} + +int sun8i_ss_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, + unsigned int keylen) +{ + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_ss_dev *ss = op->ss; + + switch (keylen) { + case 128 / 8: + break; + case 192 / 8: + break; + case 256 / 8: + break; + default: + dev_dbg(ss->dev, "ERROR: Invalid keylen %u\n", keylen); + return -EINVAL; + } + kfree_sensitive(op->key); + op->keylen = keylen; + op->key = kmemdup(key, keylen, GFP_KERNEL); + if (!op->key) + return -ENOMEM; + + crypto_skcipher_clear_flags(op->fallback_tfm, CRYPTO_TFM_REQ_MASK); + crypto_skcipher_set_flags(op->fallback_tfm, tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK); + + return crypto_skcipher_setkey(op->fallback_tfm, key, keylen); +} + +int sun8i_ss_des3_setkey(struct crypto_skcipher *tfm, const u8 *key, + unsigned int keylen) +{ + struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm); + struct sun8i_ss_dev *ss = op->ss; + + if (unlikely(keylen != 3 * DES_KEY_SIZE)) { + dev_dbg(ss->dev, "Invalid keylen %u\n", keylen); + return -EINVAL; + } + + kfree_sensitive(op->key); + op->keylen = keylen; + op->key = kmemdup(key, keylen, GFP_KERNEL); + if (!op->key) + return -ENOMEM; + + crypto_skcipher_clear_flags(op->fallback_tfm, CRYPTO_TFM_REQ_MASK); + crypto_skcipher_set_flags(op->fallback_tfm, tfm->base.crt_flags & CRYPTO_TFM_REQ_MASK); + + return crypto_skcipher_setkey(op->fallback_tfm, key, keylen); +} -- cgit v1.2.3