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/qce/aead.c | 847 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 847 insertions(+) create mode 100644 drivers/crypto/qce/aead.c (limited to 'drivers/crypto/qce/aead.c') diff --git a/drivers/crypto/qce/aead.c b/drivers/crypto/qce/aead.c new file mode 100644 index 000000000..7d811728f --- /dev/null +++ b/drivers/crypto/qce/aead.c @@ -0,0 +1,847 @@ +// SPDX-License-Identifier: GPL-2.0-only + +/* + * Copyright (C) 2021, Linaro Limited. All rights reserved. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "aead.h" + +#define CCM_NONCE_ADATA_SHIFT 6 +#define CCM_NONCE_AUTHSIZE_SHIFT 3 +#define MAX_CCM_ADATA_HEADER_LEN 6 + +static LIST_HEAD(aead_algs); + +static void qce_aead_done(void *data) +{ + struct crypto_async_request *async_req = data; + struct aead_request *req = aead_request_cast(async_req); + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct qce_aead_ctx *ctx = crypto_tfm_ctx(async_req->tfm); + struct qce_alg_template *tmpl = to_aead_tmpl(crypto_aead_reqtfm(req)); + struct qce_device *qce = tmpl->qce; + struct qce_result_dump *result_buf = qce->dma.result_buf; + enum dma_data_direction dir_src, dir_dst; + bool diff_dst; + int error; + u32 status; + unsigned int totallen; + unsigned char tag[SHA256_DIGEST_SIZE] = {0}; + int ret = 0; + + diff_dst = (req->src != req->dst) ? true : false; + dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL; + dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL; + + error = qce_dma_terminate_all(&qce->dma); + if (error) + dev_dbg(qce->dev, "aead dma termination error (%d)\n", + error); + if (diff_dst) + dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src); + + dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst); + + if (IS_CCM(rctx->flags)) { + if (req->assoclen) { + sg_free_table(&rctx->src_tbl); + if (diff_dst) + sg_free_table(&rctx->dst_tbl); + } else { + if (!(IS_DECRYPT(rctx->flags) && !diff_dst)) + sg_free_table(&rctx->dst_tbl); + } + } else { + sg_free_table(&rctx->dst_tbl); + } + + error = qce_check_status(qce, &status); + if (error < 0 && (error != -EBADMSG)) + dev_err(qce->dev, "aead operation error (%x)\n", status); + + if (IS_ENCRYPT(rctx->flags)) { + totallen = req->cryptlen + req->assoclen; + if (IS_CCM(rctx->flags)) + scatterwalk_map_and_copy(rctx->ccmresult_buf, req->dst, + totallen, ctx->authsize, 1); + else + scatterwalk_map_and_copy(result_buf->auth_iv, req->dst, + totallen, ctx->authsize, 1); + + } else if (!IS_CCM(rctx->flags)) { + totallen = req->cryptlen + req->assoclen - ctx->authsize; + scatterwalk_map_and_copy(tag, req->src, totallen, ctx->authsize, 0); + ret = memcmp(result_buf->auth_iv, tag, ctx->authsize); + if (ret) { + pr_err("Bad message error\n"); + error = -EBADMSG; + } + } + + qce->async_req_done(qce, error); +} + +static struct scatterlist * +qce_aead_prepare_result_buf(struct sg_table *tbl, struct aead_request *req) +{ + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct qce_alg_template *tmpl = to_aead_tmpl(crypto_aead_reqtfm(req)); + struct qce_device *qce = tmpl->qce; + + sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ); + return qce_sgtable_add(tbl, &rctx->result_sg, QCE_RESULT_BUF_SZ); +} + +static struct scatterlist * +qce_aead_prepare_ccm_result_buf(struct sg_table *tbl, struct aead_request *req) +{ + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + + sg_init_one(&rctx->result_sg, rctx->ccmresult_buf, QCE_BAM_BURST_SIZE); + return qce_sgtable_add(tbl, &rctx->result_sg, QCE_BAM_BURST_SIZE); +} + +static struct scatterlist * +qce_aead_prepare_dst_buf(struct aead_request *req) +{ + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct qce_alg_template *tmpl = to_aead_tmpl(crypto_aead_reqtfm(req)); + struct qce_device *qce = tmpl->qce; + struct scatterlist *sg, *msg_sg, __sg[2]; + gfp_t gfp; + unsigned int assoclen = req->assoclen; + unsigned int totallen; + int ret; + + totallen = rctx->cryptlen + assoclen; + rctx->dst_nents = sg_nents_for_len(req->dst, totallen); + if (rctx->dst_nents < 0) { + dev_err(qce->dev, "Invalid numbers of dst SG.\n"); + return ERR_PTR(-EINVAL); + } + if (IS_CCM(rctx->flags)) + rctx->dst_nents += 2; + else + rctx->dst_nents += 1; + + gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ? + GFP_KERNEL : GFP_ATOMIC; + ret = sg_alloc_table(&rctx->dst_tbl, rctx->dst_nents, gfp); + if (ret) + return ERR_PTR(ret); + + if (IS_CCM(rctx->flags) && assoclen) { + /* Get the dst buffer */ + msg_sg = scatterwalk_ffwd(__sg, req->dst, assoclen); + + sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->adata_sg, + rctx->assoclen); + if (IS_ERR(sg)) { + ret = PTR_ERR(sg); + goto dst_tbl_free; + } + /* dst buffer */ + sg = qce_sgtable_add(&rctx->dst_tbl, msg_sg, rctx->cryptlen); + if (IS_ERR(sg)) { + ret = PTR_ERR(sg); + goto dst_tbl_free; + } + totallen = rctx->cryptlen + rctx->assoclen; + } else { + if (totallen) { + sg = qce_sgtable_add(&rctx->dst_tbl, req->dst, totallen); + if (IS_ERR(sg)) + goto dst_tbl_free; + } + } + if (IS_CCM(rctx->flags)) + sg = qce_aead_prepare_ccm_result_buf(&rctx->dst_tbl, req); + else + sg = qce_aead_prepare_result_buf(&rctx->dst_tbl, req); + + if (IS_ERR(sg)) + goto dst_tbl_free; + + sg_mark_end(sg); + rctx->dst_sg = rctx->dst_tbl.sgl; + rctx->dst_nents = sg_nents_for_len(rctx->dst_sg, totallen) + 1; + + return sg; + +dst_tbl_free: + sg_free_table(&rctx->dst_tbl); + return sg; +} + +static int +qce_aead_ccm_prepare_buf_assoclen(struct aead_request *req) +{ + struct scatterlist *sg, *msg_sg, __sg[2]; + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + unsigned int assoclen = rctx->assoclen; + unsigned int adata_header_len, cryptlen, totallen; + gfp_t gfp; + bool diff_dst; + int ret; + + if (IS_DECRYPT(rctx->flags)) + cryptlen = rctx->cryptlen + ctx->authsize; + else + cryptlen = rctx->cryptlen; + totallen = cryptlen + req->assoclen; + + /* Get the msg */ + msg_sg = scatterwalk_ffwd(__sg, req->src, req->assoclen); + + rctx->adata = kzalloc((ALIGN(assoclen, 16) + MAX_CCM_ADATA_HEADER_LEN) * + sizeof(unsigned char), GFP_ATOMIC); + if (!rctx->adata) + return -ENOMEM; + + /* + * Format associated data (RFC3610 and NIST 800-38C) + * Even though specification allows for AAD to be up to 2^64 - 1 bytes, + * the assoclen field in aead_request is unsigned int and thus limits + * the AAD to be up to 2^32 - 1 bytes. So we handle only two scenarios + * while forming the header for AAD. + */ + if (assoclen < 0xff00) { + adata_header_len = 2; + *(__be16 *)rctx->adata = cpu_to_be16(assoclen); + } else { + adata_header_len = 6; + *(__be16 *)rctx->adata = cpu_to_be16(0xfffe); + *(__be32 *)(rctx->adata + 2) = cpu_to_be32(assoclen); + } + + /* Copy the associated data */ + if (sg_copy_to_buffer(req->src, sg_nents_for_len(req->src, assoclen), + rctx->adata + adata_header_len, + assoclen) != assoclen) + return -EINVAL; + + /* Pad associated data to block size */ + rctx->assoclen = ALIGN(assoclen + adata_header_len, 16); + + diff_dst = (req->src != req->dst) ? true : false; + + if (diff_dst) + rctx->src_nents = sg_nents_for_len(req->src, totallen) + 1; + else + rctx->src_nents = sg_nents_for_len(req->src, totallen) + 2; + + gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ? GFP_KERNEL : GFP_ATOMIC; + ret = sg_alloc_table(&rctx->src_tbl, rctx->src_nents, gfp); + if (ret) + return ret; + + /* Associated Data */ + sg_init_one(&rctx->adata_sg, rctx->adata, rctx->assoclen); + sg = qce_sgtable_add(&rctx->src_tbl, &rctx->adata_sg, + rctx->assoclen); + if (IS_ERR(sg)) { + ret = PTR_ERR(sg); + goto err_free; + } + /* src msg */ + sg = qce_sgtable_add(&rctx->src_tbl, msg_sg, cryptlen); + if (IS_ERR(sg)) { + ret = PTR_ERR(sg); + goto err_free; + } + if (!diff_dst) { + /* + * For decrypt, when src and dst buffers are same, there is already space + * in the buffer for padded 0's which is output in lieu of + * the MAC that is input. So skip the below. + */ + if (!IS_DECRYPT(rctx->flags)) { + sg = qce_aead_prepare_ccm_result_buf(&rctx->src_tbl, req); + if (IS_ERR(sg)) { + ret = PTR_ERR(sg); + goto err_free; + } + } + } + sg_mark_end(sg); + rctx->src_sg = rctx->src_tbl.sgl; + totallen = cryptlen + rctx->assoclen; + rctx->src_nents = sg_nents_for_len(rctx->src_sg, totallen); + + if (diff_dst) { + sg = qce_aead_prepare_dst_buf(req); + if (IS_ERR(sg)) { + ret = PTR_ERR(sg); + goto err_free; + } + } else { + if (IS_ENCRYPT(rctx->flags)) + rctx->dst_nents = rctx->src_nents + 1; + else + rctx->dst_nents = rctx->src_nents; + rctx->dst_sg = rctx->src_sg; + } + + return 0; +err_free: + sg_free_table(&rctx->src_tbl); + return ret; +} + +static int qce_aead_prepare_buf(struct aead_request *req) +{ + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct qce_alg_template *tmpl = to_aead_tmpl(crypto_aead_reqtfm(req)); + struct qce_device *qce = tmpl->qce; + struct scatterlist *sg; + bool diff_dst = (req->src != req->dst) ? true : false; + unsigned int totallen; + + totallen = rctx->cryptlen + rctx->assoclen; + + sg = qce_aead_prepare_dst_buf(req); + if (IS_ERR(sg)) + return PTR_ERR(sg); + if (diff_dst) { + rctx->src_nents = sg_nents_for_len(req->src, totallen); + if (rctx->src_nents < 0) { + dev_err(qce->dev, "Invalid numbers of src SG.\n"); + return -EINVAL; + } + rctx->src_sg = req->src; + } else { + rctx->src_nents = rctx->dst_nents - 1; + rctx->src_sg = rctx->dst_sg; + } + return 0; +} + +static int qce_aead_ccm_prepare_buf(struct aead_request *req) +{ + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + struct scatterlist *sg; + bool diff_dst = (req->src != req->dst) ? true : false; + unsigned int cryptlen; + + if (rctx->assoclen) + return qce_aead_ccm_prepare_buf_assoclen(req); + + if (IS_ENCRYPT(rctx->flags)) + return qce_aead_prepare_buf(req); + + cryptlen = rctx->cryptlen + ctx->authsize; + if (diff_dst) { + rctx->src_nents = sg_nents_for_len(req->src, cryptlen); + rctx->src_sg = req->src; + sg = qce_aead_prepare_dst_buf(req); + if (IS_ERR(sg)) + return PTR_ERR(sg); + } else { + rctx->src_nents = sg_nents_for_len(req->src, cryptlen); + rctx->src_sg = req->src; + rctx->dst_nents = rctx->src_nents; + rctx->dst_sg = rctx->src_sg; + } + + return 0; +} + +static int qce_aead_create_ccm_nonce(struct qce_aead_reqctx *rctx, struct qce_aead_ctx *ctx) +{ + unsigned int msglen_size, ivsize; + u8 msg_len[4]; + int i; + + if (!rctx || !rctx->iv) + return -EINVAL; + + msglen_size = rctx->iv[0] + 1; + + /* Verify that msg len size is valid */ + if (msglen_size < 2 || msglen_size > 8) + return -EINVAL; + + ivsize = rctx->ivsize; + + /* + * Clear the msglen bytes in IV. + * Else the h/w engine and nonce will use any stray value pending there. + */ + if (!IS_CCM_RFC4309(rctx->flags)) { + for (i = 0; i < msglen_size; i++) + rctx->iv[ivsize - i - 1] = 0; + } + + /* + * The crypto framework encodes cryptlen as unsigned int. Thus, even though + * spec allows for upto 8 bytes to encode msg_len only 4 bytes are needed. + */ + if (msglen_size > 4) + msglen_size = 4; + + memcpy(&msg_len[0], &rctx->cryptlen, 4); + + memcpy(&rctx->ccm_nonce[0], rctx->iv, rctx->ivsize); + if (rctx->assoclen) + rctx->ccm_nonce[0] |= 1 << CCM_NONCE_ADATA_SHIFT; + rctx->ccm_nonce[0] |= ((ctx->authsize - 2) / 2) << + CCM_NONCE_AUTHSIZE_SHIFT; + for (i = 0; i < msglen_size; i++) + rctx->ccm_nonce[QCE_MAX_NONCE - i - 1] = msg_len[i]; + + return 0; +} + +static int +qce_aead_async_req_handle(struct crypto_async_request *async_req) +{ + struct aead_request *req = aead_request_cast(async_req); + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct qce_aead_ctx *ctx = crypto_tfm_ctx(async_req->tfm); + struct qce_alg_template *tmpl = to_aead_tmpl(crypto_aead_reqtfm(req)); + struct qce_device *qce = tmpl->qce; + enum dma_data_direction dir_src, dir_dst; + bool diff_dst; + int dst_nents, src_nents, ret; + + if (IS_CCM_RFC4309(rctx->flags)) { + memset(rctx->ccm_rfc4309_iv, 0, QCE_MAX_IV_SIZE); + rctx->ccm_rfc4309_iv[0] = 3; + memcpy(&rctx->ccm_rfc4309_iv[1], ctx->ccm4309_salt, QCE_CCM4309_SALT_SIZE); + memcpy(&rctx->ccm_rfc4309_iv[4], req->iv, 8); + rctx->iv = rctx->ccm_rfc4309_iv; + rctx->ivsize = AES_BLOCK_SIZE; + } else { + rctx->iv = req->iv; + rctx->ivsize = crypto_aead_ivsize(tfm); + } + if (IS_CCM_RFC4309(rctx->flags)) + rctx->assoclen = req->assoclen - 8; + else + rctx->assoclen = req->assoclen; + + diff_dst = (req->src != req->dst) ? true : false; + dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL; + dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL; + + if (IS_CCM(rctx->flags)) { + ret = qce_aead_create_ccm_nonce(rctx, ctx); + if (ret) + return ret; + } + if (IS_CCM(rctx->flags)) + ret = qce_aead_ccm_prepare_buf(req); + else + ret = qce_aead_prepare_buf(req); + + if (ret) + return ret; + dst_nents = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst); + if (!dst_nents) { + ret = -EIO; + goto error_free; + } + + if (diff_dst) { + src_nents = dma_map_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src); + if (src_nents < 0) { + ret = src_nents; + goto error_unmap_dst; + } + } else { + if (IS_CCM(rctx->flags) && IS_DECRYPT(rctx->flags)) + src_nents = dst_nents; + else + src_nents = dst_nents - 1; + } + + ret = qce_dma_prep_sgs(&qce->dma, rctx->src_sg, src_nents, rctx->dst_sg, dst_nents, + qce_aead_done, async_req); + if (ret) + goto error_unmap_src; + + qce_dma_issue_pending(&qce->dma); + + ret = qce_start(async_req, tmpl->crypto_alg_type); + if (ret) + goto error_terminate; + + return 0; + +error_terminate: + qce_dma_terminate_all(&qce->dma); +error_unmap_src: + if (diff_dst) + dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src); +error_unmap_dst: + dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst); +error_free: + if (IS_CCM(rctx->flags) && rctx->assoclen) { + sg_free_table(&rctx->src_tbl); + if (diff_dst) + sg_free_table(&rctx->dst_tbl); + } else { + sg_free_table(&rctx->dst_tbl); + } + return ret; +} + +static int qce_aead_crypt(struct aead_request *req, int encrypt) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + struct qce_aead_reqctx *rctx = aead_request_ctx_dma(req); + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + struct qce_alg_template *tmpl = to_aead_tmpl(tfm); + unsigned int blocksize = crypto_aead_blocksize(tfm); + + rctx->flags = tmpl->alg_flags; + rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT; + + if (encrypt) + rctx->cryptlen = req->cryptlen; + else + rctx->cryptlen = req->cryptlen - ctx->authsize; + + /* CE does not handle 0 length messages */ + if (!rctx->cryptlen) { + if (!(IS_CCM(rctx->flags) && IS_DECRYPT(rctx->flags))) + ctx->need_fallback = true; + } + + /* If fallback is needed, schedule and exit */ + if (ctx->need_fallback) { + /* Reset need_fallback in case the same ctx is used for another transaction */ + ctx->need_fallback = false; + + aead_request_set_tfm(&rctx->fallback_req, ctx->fallback); + aead_request_set_callback(&rctx->fallback_req, req->base.flags, + req->base.complete, req->base.data); + aead_request_set_crypt(&rctx->fallback_req, req->src, + req->dst, req->cryptlen, req->iv); + aead_request_set_ad(&rctx->fallback_req, req->assoclen); + + return encrypt ? crypto_aead_encrypt(&rctx->fallback_req) : + crypto_aead_decrypt(&rctx->fallback_req); + } + + /* + * CBC algorithms require message lengths to be + * multiples of block size. + */ + if (IS_CBC(rctx->flags) && !IS_ALIGNED(rctx->cryptlen, blocksize)) + return -EINVAL; + + /* RFC4309 supported AAD size 16 bytes/20 bytes */ + if (IS_CCM_RFC4309(rctx->flags)) + if (crypto_ipsec_check_assoclen(req->assoclen)) + return -EINVAL; + + return tmpl->qce->async_req_enqueue(tmpl->qce, &req->base); +} + +static int qce_aead_encrypt(struct aead_request *req) +{ + return qce_aead_crypt(req, 1); +} + +static int qce_aead_decrypt(struct aead_request *req) +{ + return qce_aead_crypt(req, 0); +} + +static int qce_aead_ccm_setkey(struct crypto_aead *tfm, const u8 *key, + unsigned int keylen) +{ + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + unsigned long flags = to_aead_tmpl(tfm)->alg_flags; + + if (IS_CCM_RFC4309(flags)) { + if (keylen < QCE_CCM4309_SALT_SIZE) + return -EINVAL; + keylen -= QCE_CCM4309_SALT_SIZE; + memcpy(ctx->ccm4309_salt, key + keylen, QCE_CCM4309_SALT_SIZE); + } + + if (keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_256 && keylen != AES_KEYSIZE_192) + return -EINVAL; + + ctx->enc_keylen = keylen; + ctx->auth_keylen = keylen; + + memcpy(ctx->enc_key, key, keylen); + memcpy(ctx->auth_key, key, keylen); + + if (keylen == AES_KEYSIZE_192) + ctx->need_fallback = true; + + return IS_CCM_RFC4309(flags) ? + crypto_aead_setkey(ctx->fallback, key, keylen + QCE_CCM4309_SALT_SIZE) : + crypto_aead_setkey(ctx->fallback, key, keylen); +} + +static int qce_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen) +{ + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + struct crypto_authenc_keys authenc_keys; + unsigned long flags = to_aead_tmpl(tfm)->alg_flags; + u32 _key[6]; + int err; + + err = crypto_authenc_extractkeys(&authenc_keys, key, keylen); + if (err) + return err; + + if (authenc_keys.enckeylen > QCE_MAX_KEY_SIZE || + authenc_keys.authkeylen > QCE_MAX_KEY_SIZE) + return -EINVAL; + + if (IS_DES(flags)) { + err = verify_aead_des_key(tfm, authenc_keys.enckey, authenc_keys.enckeylen); + if (err) + return err; + } else if (IS_3DES(flags)) { + err = verify_aead_des3_key(tfm, authenc_keys.enckey, authenc_keys.enckeylen); + if (err) + return err; + /* + * The crypto engine does not support any two keys + * being the same for triple des algorithms. The + * verify_skcipher_des3_key does not check for all the + * below conditions. Schedule fallback in this case. + */ + memcpy(_key, authenc_keys.enckey, DES3_EDE_KEY_SIZE); + if (!((_key[0] ^ _key[2]) | (_key[1] ^ _key[3])) || + !((_key[2] ^ _key[4]) | (_key[3] ^ _key[5])) || + !((_key[0] ^ _key[4]) | (_key[1] ^ _key[5]))) + ctx->need_fallback = true; + } else if (IS_AES(flags)) { + /* No random key sizes */ + if (authenc_keys.enckeylen != AES_KEYSIZE_128 && + authenc_keys.enckeylen != AES_KEYSIZE_192 && + authenc_keys.enckeylen != AES_KEYSIZE_256) + return -EINVAL; + if (authenc_keys.enckeylen == AES_KEYSIZE_192) + ctx->need_fallback = true; + } + + ctx->enc_keylen = authenc_keys.enckeylen; + ctx->auth_keylen = authenc_keys.authkeylen; + + memcpy(ctx->enc_key, authenc_keys.enckey, authenc_keys.enckeylen); + + memset(ctx->auth_key, 0, sizeof(ctx->auth_key)); + memcpy(ctx->auth_key, authenc_keys.authkey, authenc_keys.authkeylen); + + return crypto_aead_setkey(ctx->fallback, key, keylen); +} + +static int qce_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize) +{ + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + unsigned long flags = to_aead_tmpl(tfm)->alg_flags; + + if (IS_CCM(flags)) { + if (authsize < 4 || authsize > 16 || authsize % 2) + return -EINVAL; + if (IS_CCM_RFC4309(flags) && (authsize < 8 || authsize % 4)) + return -EINVAL; + } + ctx->authsize = authsize; + + return crypto_aead_setauthsize(ctx->fallback, authsize); +} + +static int qce_aead_init(struct crypto_aead *tfm) +{ + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + + ctx->need_fallback = false; + ctx->fallback = crypto_alloc_aead(crypto_tfm_alg_name(&tfm->base), + 0, CRYPTO_ALG_NEED_FALLBACK); + + if (IS_ERR(ctx->fallback)) + return PTR_ERR(ctx->fallback); + + crypto_aead_set_reqsize_dma(tfm, sizeof(struct qce_aead_reqctx) + + crypto_aead_reqsize(ctx->fallback)); + return 0; +} + +static void qce_aead_exit(struct crypto_aead *tfm) +{ + struct qce_aead_ctx *ctx = crypto_aead_ctx(tfm); + + crypto_free_aead(ctx->fallback); +} + +struct qce_aead_def { + unsigned long flags; + const char *name; + const char *drv_name; + unsigned int blocksize; + unsigned int chunksize; + unsigned int ivsize; + unsigned int maxauthsize; +}; + +static const struct qce_aead_def aead_def[] = { + { + .flags = QCE_ALG_DES | QCE_MODE_CBC | QCE_HASH_SHA1_HMAC, + .name = "authenc(hmac(sha1),cbc(des))", + .drv_name = "authenc-hmac-sha1-cbc-des-qce", + .blocksize = DES_BLOCK_SIZE, + .ivsize = DES_BLOCK_SIZE, + .maxauthsize = SHA1_DIGEST_SIZE, + }, + { + .flags = QCE_ALG_3DES | QCE_MODE_CBC | QCE_HASH_SHA1_HMAC, + .name = "authenc(hmac(sha1),cbc(des3_ede))", + .drv_name = "authenc-hmac-sha1-cbc-3des-qce", + .blocksize = DES3_EDE_BLOCK_SIZE, + .ivsize = DES3_EDE_BLOCK_SIZE, + .maxauthsize = SHA1_DIGEST_SIZE, + }, + { + .flags = QCE_ALG_DES | QCE_MODE_CBC | QCE_HASH_SHA256_HMAC, + .name = "authenc(hmac(sha256),cbc(des))", + .drv_name = "authenc-hmac-sha256-cbc-des-qce", + .blocksize = DES_BLOCK_SIZE, + .ivsize = DES_BLOCK_SIZE, + .maxauthsize = SHA256_DIGEST_SIZE, + }, + { + .flags = QCE_ALG_3DES | QCE_MODE_CBC | QCE_HASH_SHA256_HMAC, + .name = "authenc(hmac(sha256),cbc(des3_ede))", + .drv_name = "authenc-hmac-sha256-cbc-3des-qce", + .blocksize = DES3_EDE_BLOCK_SIZE, + .ivsize = DES3_EDE_BLOCK_SIZE, + .maxauthsize = SHA256_DIGEST_SIZE, + }, + { + .flags = QCE_ALG_AES | QCE_MODE_CBC | QCE_HASH_SHA256_HMAC, + .name = "authenc(hmac(sha256),cbc(aes))", + .drv_name = "authenc-hmac-sha256-cbc-aes-qce", + .blocksize = AES_BLOCK_SIZE, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = SHA256_DIGEST_SIZE, + }, + { + .flags = QCE_ALG_AES | QCE_MODE_CCM, + .name = "ccm(aes)", + .drv_name = "ccm-aes-qce", + .blocksize = 1, + .ivsize = AES_BLOCK_SIZE, + .maxauthsize = AES_BLOCK_SIZE, + }, + { + .flags = QCE_ALG_AES | QCE_MODE_CCM | QCE_MODE_CCM_RFC4309, + .name = "rfc4309(ccm(aes))", + .drv_name = "rfc4309-ccm-aes-qce", + .blocksize = 1, + .ivsize = 8, + .maxauthsize = AES_BLOCK_SIZE, + }, +}; + +static int qce_aead_register_one(const struct qce_aead_def *def, struct qce_device *qce) +{ + struct qce_alg_template *tmpl; + struct aead_alg *alg; + int ret; + + tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL); + if (!tmpl) + return -ENOMEM; + + alg = &tmpl->alg.aead; + + snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name); + snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", + def->drv_name); + + alg->base.cra_blocksize = def->blocksize; + alg->chunksize = def->chunksize; + alg->ivsize = def->ivsize; + alg->maxauthsize = def->maxauthsize; + if (IS_CCM(def->flags)) + alg->setkey = qce_aead_ccm_setkey; + else + alg->setkey = qce_aead_setkey; + alg->setauthsize = qce_aead_setauthsize; + alg->encrypt = qce_aead_encrypt; + alg->decrypt = qce_aead_decrypt; + alg->init = qce_aead_init; + alg->exit = qce_aead_exit; + + alg->base.cra_priority = 300; + alg->base.cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_ALLOCATES_MEMORY | + CRYPTO_ALG_KERN_DRIVER_ONLY | + CRYPTO_ALG_NEED_FALLBACK; + alg->base.cra_ctxsize = sizeof(struct qce_aead_ctx); + alg->base.cra_alignmask = 0; + alg->base.cra_module = THIS_MODULE; + + INIT_LIST_HEAD(&tmpl->entry); + tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_AEAD; + tmpl->alg_flags = def->flags; + tmpl->qce = qce; + + ret = crypto_register_aead(alg); + if (ret) { + dev_err(qce->dev, "%s registration failed\n", alg->base.cra_name); + kfree(tmpl); + return ret; + } + + list_add_tail(&tmpl->entry, &aead_algs); + dev_dbg(qce->dev, "%s is registered\n", alg->base.cra_name); + return 0; +} + +static void qce_aead_unregister(struct qce_device *qce) +{ + struct qce_alg_template *tmpl, *n; + + list_for_each_entry_safe(tmpl, n, &aead_algs, entry) { + crypto_unregister_aead(&tmpl->alg.aead); + list_del(&tmpl->entry); + kfree(tmpl); + } +} + +static int qce_aead_register(struct qce_device *qce) +{ + int ret, i; + + for (i = 0; i < ARRAY_SIZE(aead_def); i++) { + ret = qce_aead_register_one(&aead_def[i], qce); + if (ret) + goto err; + } + + return 0; +err: + qce_aead_unregister(qce); + return ret; +} + +const struct qce_algo_ops aead_ops = { + .type = CRYPTO_ALG_TYPE_AEAD, + .register_algs = qce_aead_register, + .unregister_algs = qce_aead_unregister, + .async_req_handle = qce_aead_async_req_handle, +}; -- cgit v1.2.3