Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 595 insertions, 0 deletions

diff --git a/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c b/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c
new file mode 100644
index 000000000..6963344f6
--- /dev/null
+++ b/drivers/crypto/virtio/virtio_crypto_akcipher_algs.c
@@ -0,0 +1,595 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+ /* Asymmetric algorithms supported by virtio crypto device
+  *
+  * Authors: zhenwei pi <pizhenwei@bytedance.com>
+  *          lei he <helei.sig11@bytedance.com>
+  *
+  * Copyright 2022 Bytedance CO., LTD.
+  */
+
+#include <linux/mpi.h>
+#include <linux/scatterlist.h>
+#include <crypto/algapi.h>
+#include <crypto/internal/akcipher.h>
+#include <crypto/internal/rsa.h>
+#include <linux/err.h>
+#include <crypto/scatterwalk.h>
+#include <linux/atomic.h>
+
+#include <uapi/linux/virtio_crypto.h>
+#include "virtio_crypto_common.h"
+
+struct virtio_crypto_rsa_ctx {
+	MPI n;
+};
+
+struct virtio_crypto_akcipher_ctx {
+	struct crypto_engine_ctx enginectx;
+	struct virtio_crypto *vcrypto;
+	struct crypto_akcipher *tfm;
+	bool session_valid;
+	__u64 session_id;
+	union {
+		struct virtio_crypto_rsa_ctx rsa_ctx;
+	};
+};
+
+struct virtio_crypto_akcipher_request {
+	struct virtio_crypto_request base;
+	struct virtio_crypto_akcipher_ctx *akcipher_ctx;
+	struct akcipher_request *akcipher_req;
+	void *src_buf;
+	void *dst_buf;
+	uint32_t opcode;
+};
+
+struct virtio_crypto_akcipher_algo {
+	uint32_t algonum;
+	uint32_t service;
+	unsigned int active_devs;
+	struct akcipher_alg algo;
+};
+
+static DEFINE_MUTEX(algs_lock);
+
+static void virtio_crypto_akcipher_finalize_req(
+	struct virtio_crypto_akcipher_request *vc_akcipher_req,
+	struct akcipher_request *req, int err)
+{
+	kfree(vc_akcipher_req->src_buf);
+	kfree(vc_akcipher_req->dst_buf);
+	vc_akcipher_req->src_buf = NULL;
+	vc_akcipher_req->dst_buf = NULL;
+	virtcrypto_clear_request(&vc_akcipher_req->base);
+
+	crypto_finalize_akcipher_request(vc_akcipher_req->base.dataq->engine, req, err);
+}
+
+static void virtio_crypto_dataq_akcipher_callback(struct virtio_crypto_request *vc_req, int len)
+{
+	struct virtio_crypto_akcipher_request *vc_akcipher_req =
+		container_of(vc_req, struct virtio_crypto_akcipher_request, base);
+	struct akcipher_request *akcipher_req;
+	int error;
+
+	switch (vc_req->status) {
+	case VIRTIO_CRYPTO_OK:
+		error = 0;
+		break;
+	case VIRTIO_CRYPTO_INVSESS:
+	case VIRTIO_CRYPTO_ERR:
+		error = -EINVAL;
+		break;
+	case VIRTIO_CRYPTO_BADMSG:
+		error = -EBADMSG;
+		break;
+
+	case VIRTIO_CRYPTO_KEY_REJECTED:
+		error = -EKEYREJECTED;
+		break;
+
+	default:
+		error = -EIO;
+		break;
+	}
+
+	akcipher_req = vc_akcipher_req->akcipher_req;
+	if (vc_akcipher_req->opcode != VIRTIO_CRYPTO_AKCIPHER_VERIFY) {
+		/* actuall length maybe less than dst buffer */
+		akcipher_req->dst_len = len - sizeof(vc_req->status);
+		sg_copy_from_buffer(akcipher_req->dst, sg_nents(akcipher_req->dst),
+				    vc_akcipher_req->dst_buf, akcipher_req->dst_len);
+	}
+	virtio_crypto_akcipher_finalize_req(vc_akcipher_req, akcipher_req, error);
+}
+
+static int virtio_crypto_alg_akcipher_init_session(struct virtio_crypto_akcipher_ctx *ctx,
+		struct virtio_crypto_ctrl_header *header, void *para,
+		const uint8_t *key, unsigned int keylen)
+{
+	struct scatterlist outhdr_sg, key_sg, inhdr_sg, *sgs[3];
+	struct virtio_crypto *vcrypto = ctx->vcrypto;
+	uint8_t *pkey;
+	int err;
+	unsigned int num_out = 0, num_in = 0;
+	struct virtio_crypto_op_ctrl_req *ctrl;
+	struct virtio_crypto_session_input *input;
+	struct virtio_crypto_ctrl_request *vc_ctrl_req;
+
+	pkey = kmemdup(key, keylen, GFP_KERNEL);
+	if (!pkey)
+		return -ENOMEM;
+
+	vc_ctrl_req = kzalloc(sizeof(*vc_ctrl_req), GFP_KERNEL);
+	if (!vc_ctrl_req) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	ctrl = &vc_ctrl_req->ctrl;
+	memcpy(&ctrl->header, header, sizeof(ctrl->header));
+	memcpy(&ctrl->u, para, sizeof(ctrl->u));
+	input = &vc_ctrl_req->input;
+	input->status = cpu_to_le32(VIRTIO_CRYPTO_ERR);
+
+	sg_init_one(&outhdr_sg, ctrl, sizeof(*ctrl));
+	sgs[num_out++] = &outhdr_sg;
+
+	sg_init_one(&key_sg, pkey, keylen);
+	sgs[num_out++] = &key_sg;
+
+	sg_init_one(&inhdr_sg, input, sizeof(*input));
+	sgs[num_out + num_in++] = &inhdr_sg;
+
+	err = virtio_crypto_ctrl_vq_request(vcrypto, sgs, num_out, num_in, vc_ctrl_req);
+	if (err < 0)
+		goto out;
+
+	if (le32_to_cpu(input->status) != VIRTIO_CRYPTO_OK) {
+		pr_err("virtio_crypto: Create session failed status: %u\n",
+			le32_to_cpu(input->status));
+		err = -EINVAL;
+		goto out;
+	}
+
+	ctx->session_id = le64_to_cpu(input->session_id);
+	ctx->session_valid = true;
+	err = 0;
+
+out:
+	kfree(vc_ctrl_req);
+	kfree_sensitive(pkey);
+
+	return err;
+}
+
+static int virtio_crypto_alg_akcipher_close_session(struct virtio_crypto_akcipher_ctx *ctx)
+{
+	struct scatterlist outhdr_sg, inhdr_sg, *sgs[2];
+	struct virtio_crypto_destroy_session_req *destroy_session;
+	struct virtio_crypto *vcrypto = ctx->vcrypto;
+	unsigned int num_out = 0, num_in = 0;
+	int err;
+	struct virtio_crypto_op_ctrl_req *ctrl;
+	struct virtio_crypto_inhdr *ctrl_status;
+	struct virtio_crypto_ctrl_request *vc_ctrl_req;
+
+	if (!ctx->session_valid)
+		return 0;
+
+	vc_ctrl_req = kzalloc(sizeof(*vc_ctrl_req), GFP_KERNEL);
+	if (!vc_ctrl_req)
+		return -ENOMEM;
+
+	ctrl_status = &vc_ctrl_req->ctrl_status;
+	ctrl_status->status = VIRTIO_CRYPTO_ERR;
+	ctrl = &vc_ctrl_req->ctrl;
+	ctrl->header.opcode = cpu_to_le32(VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION);
+	ctrl->header.queue_id = 0;
+
+	destroy_session = &ctrl->u.destroy_session;
+	destroy_session->session_id = cpu_to_le64(ctx->session_id);
+
+	sg_init_one(&outhdr_sg, ctrl, sizeof(*ctrl));
+	sgs[num_out++] = &outhdr_sg;
+
+	sg_init_one(&inhdr_sg, &ctrl_status->status, sizeof(ctrl_status->status));
+	sgs[num_out + num_in++] = &inhdr_sg;
+
+	err = virtio_crypto_ctrl_vq_request(vcrypto, sgs, num_out, num_in, vc_ctrl_req);
+	if (err < 0)
+		goto out;
+
+	if (ctrl_status->status != VIRTIO_CRYPTO_OK) {
+		pr_err("virtio_crypto: Close session failed status: %u, session_id: 0x%llx\n",
+			ctrl_status->status, destroy_session->session_id);
+		err = -EINVAL;
+		goto out;
+	}
+
+	err = 0;
+	ctx->session_valid = false;
+
+out:
+	kfree(vc_ctrl_req);
+
+	return err;
+}
+
+static int __virtio_crypto_akcipher_do_req(struct virtio_crypto_akcipher_request *vc_akcipher_req,
+		struct akcipher_request *req, struct data_queue *data_vq)
+{
+	struct virtio_crypto_akcipher_ctx *ctx = vc_akcipher_req->akcipher_ctx;
+	struct virtio_crypto_request *vc_req = &vc_akcipher_req->base;
+	struct virtio_crypto *vcrypto = ctx->vcrypto;
+	struct virtio_crypto_op_data_req *req_data = vc_req->req_data;
+	struct scatterlist *sgs[4], outhdr_sg, inhdr_sg, srcdata_sg, dstdata_sg;
+	void *src_buf = NULL, *dst_buf = NULL;
+	unsigned int num_out = 0, num_in = 0;
+	int node = dev_to_node(&vcrypto->vdev->dev);
+	unsigned long flags;
+	int ret = -ENOMEM;
+	bool verify = vc_akcipher_req->opcode == VIRTIO_CRYPTO_AKCIPHER_VERIFY;
+	unsigned int src_len = verify ? req->src_len + req->dst_len : req->src_len;
+
+	/* out header */
+	sg_init_one(&outhdr_sg, req_data, sizeof(*req_data));
+	sgs[num_out++] = &outhdr_sg;
+
+	/* src data */
+	src_buf = kcalloc_node(src_len, 1, GFP_KERNEL, node);
+	if (!src_buf)
+		goto err;
+
+	if (verify) {
+		/* for verify operation, both src and dst data work as OUT direction */
+		sg_copy_to_buffer(req->src, sg_nents(req->src), src_buf, src_len);
+		sg_init_one(&srcdata_sg, src_buf, src_len);
+		sgs[num_out++] = &srcdata_sg;
+	} else {
+		sg_copy_to_buffer(req->src, sg_nents(req->src), src_buf, src_len);
+		sg_init_one(&srcdata_sg, src_buf, src_len);
+		sgs[num_out++] = &srcdata_sg;
+
+		/* dst data */
+		dst_buf = kcalloc_node(req->dst_len, 1, GFP_KERNEL, node);
+		if (!dst_buf)
+			goto err;
+
+		sg_init_one(&dstdata_sg, dst_buf, req->dst_len);
+		sgs[num_out + num_in++] = &dstdata_sg;
+	}
+
+	vc_akcipher_req->src_buf = src_buf;
+	vc_akcipher_req->dst_buf = dst_buf;
+
+	/* in header */
+	sg_init_one(&inhdr_sg, &vc_req->status, sizeof(vc_req->status));
+	sgs[num_out + num_in++] = &inhdr_sg;
+
+	spin_lock_irqsave(&data_vq->lock, flags);
+	ret = virtqueue_add_sgs(data_vq->vq, sgs, num_out, num_in, vc_req, GFP_ATOMIC);
+	virtqueue_kick(data_vq->vq);
+	spin_unlock_irqrestore(&data_vq->lock, flags);
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	kfree(src_buf);
+	kfree(dst_buf);
+
+	return -ENOMEM;
+}
+
+static int virtio_crypto_rsa_do_req(struct crypto_engine *engine, void *vreq)
+{
+	struct akcipher_request *req = container_of(vreq, struct akcipher_request, base);
+	struct virtio_crypto_akcipher_request *vc_akcipher_req = akcipher_request_ctx(req);
+	struct virtio_crypto_request *vc_req = &vc_akcipher_req->base;
+	struct virtio_crypto_akcipher_ctx *ctx = vc_akcipher_req->akcipher_ctx;
+	struct virtio_crypto *vcrypto = ctx->vcrypto;
+	struct data_queue *data_vq = vc_req->dataq;
+	struct virtio_crypto_op_header *header;
+	struct virtio_crypto_akcipher_data_req *akcipher_req;
+	int ret;
+
+	vc_req->sgs = NULL;
+	vc_req->req_data = kzalloc_node(sizeof(*vc_req->req_data),
+		GFP_KERNEL, dev_to_node(&vcrypto->vdev->dev));
+	if (!vc_req->req_data)
+		return -ENOMEM;
+
+	/* build request header */
+	header = &vc_req->req_data->header;
+	header->opcode = cpu_to_le32(vc_akcipher_req->opcode);
+	header->algo = cpu_to_le32(VIRTIO_CRYPTO_AKCIPHER_RSA);
+	header->session_id = cpu_to_le64(ctx->session_id);
+
+	/* build request akcipher data */
+	akcipher_req = &vc_req->req_data->u.akcipher_req;
+	akcipher_req->para.src_data_len = cpu_to_le32(req->src_len);
+	akcipher_req->para.dst_data_len = cpu_to_le32(req->dst_len);
+
+	ret = __virtio_crypto_akcipher_do_req(vc_akcipher_req, req, data_vq);
+	if (ret < 0) {
+		kfree_sensitive(vc_req->req_data);
+		vc_req->req_data = NULL;
+		return ret;
+	}
+
+	return 0;
+}
+
+static int virtio_crypto_rsa_req(struct akcipher_request *req, uint32_t opcode)
+{
+	struct crypto_akcipher *atfm = crypto_akcipher_reqtfm(req);
+	struct virtio_crypto_akcipher_ctx *ctx = akcipher_tfm_ctx(atfm);
+	struct virtio_crypto_akcipher_request *vc_akcipher_req = akcipher_request_ctx(req);
+	struct virtio_crypto_request *vc_req = &vc_akcipher_req->base;
+	struct virtio_crypto *vcrypto = ctx->vcrypto;
+	/* Use the first data virtqueue as default */
+	struct data_queue *data_vq = &vcrypto->data_vq[0];
+
+	vc_req->dataq = data_vq;
+	vc_req->alg_cb = virtio_crypto_dataq_akcipher_callback;
+	vc_akcipher_req->akcipher_ctx = ctx;
+	vc_akcipher_req->akcipher_req = req;
+	vc_akcipher_req->opcode = opcode;
+
+	return crypto_transfer_akcipher_request_to_engine(data_vq->engine, req);
+}
+
+static int virtio_crypto_rsa_encrypt(struct akcipher_request *req)
+{
+	return virtio_crypto_rsa_req(req, VIRTIO_CRYPTO_AKCIPHER_ENCRYPT);
+}
+
+static int virtio_crypto_rsa_decrypt(struct akcipher_request *req)
+{
+	return virtio_crypto_rsa_req(req, VIRTIO_CRYPTO_AKCIPHER_DECRYPT);
+}
+
+static int virtio_crypto_rsa_sign(struct akcipher_request *req)
+{
+	return virtio_crypto_rsa_req(req, VIRTIO_CRYPTO_AKCIPHER_SIGN);
+}
+
+static int virtio_crypto_rsa_verify(struct akcipher_request *req)
+{
+	return virtio_crypto_rsa_req(req, VIRTIO_CRYPTO_AKCIPHER_VERIFY);
+}
+
+static int virtio_crypto_rsa_set_key(struct crypto_akcipher *tfm,
+				     const void *key,
+				     unsigned int keylen,
+				     bool private,
+				     int padding_algo,
+				     int hash_algo)
+{
+	struct virtio_crypto_akcipher_ctx *ctx = akcipher_tfm_ctx(tfm);
+	struct virtio_crypto_rsa_ctx *rsa_ctx = &ctx->rsa_ctx;
+	struct virtio_crypto *vcrypto;
+	struct virtio_crypto_ctrl_header header;
+	struct virtio_crypto_akcipher_session_para para;
+	struct rsa_key rsa_key = {0};
+	int node = virtio_crypto_get_current_node();
+	uint32_t keytype;
+	int ret;
+
+	/* mpi_free will test n, just free it. */
+	mpi_free(rsa_ctx->n);
+	rsa_ctx->n = NULL;
+
+	if (private) {
+		keytype = VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE;
+		ret = rsa_parse_priv_key(&rsa_key, key, keylen);
+	} else {
+		keytype = VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC;
+		ret = rsa_parse_pub_key(&rsa_key, key, keylen);
+	}
+
+	if (ret)
+		return ret;
+
+	rsa_ctx->n = mpi_read_raw_data(rsa_key.n, rsa_key.n_sz);
+	if (!rsa_ctx->n)
+		return -ENOMEM;
+
+	if (!ctx->vcrypto) {
+		vcrypto = virtcrypto_get_dev_node(node, VIRTIO_CRYPTO_SERVICE_AKCIPHER,
+						VIRTIO_CRYPTO_AKCIPHER_RSA);
+		if (!vcrypto) {
+			pr_err("virtio_crypto: Could not find a virtio device in the system or unsupported algo\n");
+			return -ENODEV;
+		}
+
+		ctx->vcrypto = vcrypto;
+	} else {
+		virtio_crypto_alg_akcipher_close_session(ctx);
+	}
+
+	/* set ctrl header */
+	header.opcode =	cpu_to_le32(VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION);
+	header.algo = cpu_to_le32(VIRTIO_CRYPTO_AKCIPHER_RSA);
+	header.queue_id = 0;
+
+	/* set RSA para */
+	para.algo = cpu_to_le32(VIRTIO_CRYPTO_AKCIPHER_RSA);
+	para.keytype = cpu_to_le32(keytype);
+	para.keylen = cpu_to_le32(keylen);
+	para.u.rsa.padding_algo = cpu_to_le32(padding_algo);
+	para.u.rsa.hash_algo = cpu_to_le32(hash_algo);
+
+	return virtio_crypto_alg_akcipher_init_session(ctx, &header, &para, key, keylen);
+}
+
+static int virtio_crypto_rsa_raw_set_priv_key(struct crypto_akcipher *tfm,
+					      const void *key,
+					      unsigned int keylen)
+{
+	return virtio_crypto_rsa_set_key(tfm, key, keylen, 1,
+					 VIRTIO_CRYPTO_RSA_RAW_PADDING,
+					 VIRTIO_CRYPTO_RSA_NO_HASH);
+}
+
+
+static int virtio_crypto_p1pad_rsa_sha1_set_priv_key(struct crypto_akcipher *tfm,
+						     const void *key,
+						     unsigned int keylen)
+{
+	return virtio_crypto_rsa_set_key(tfm, key, keylen, 1,
+					 VIRTIO_CRYPTO_RSA_PKCS1_PADDING,
+					 VIRTIO_CRYPTO_RSA_SHA1);
+}
+
+static int virtio_crypto_rsa_raw_set_pub_key(struct crypto_akcipher *tfm,
+					     const void *key,
+					     unsigned int keylen)
+{
+	return virtio_crypto_rsa_set_key(tfm, key, keylen, 0,
+					 VIRTIO_CRYPTO_RSA_RAW_PADDING,
+					 VIRTIO_CRYPTO_RSA_NO_HASH);
+}
+
+static int virtio_crypto_p1pad_rsa_sha1_set_pub_key(struct crypto_akcipher *tfm,
+						    const void *key,
+						    unsigned int keylen)
+{
+	return virtio_crypto_rsa_set_key(tfm, key, keylen, 0,
+					 VIRTIO_CRYPTO_RSA_PKCS1_PADDING,
+					 VIRTIO_CRYPTO_RSA_SHA1);
+}
+
+static unsigned int virtio_crypto_rsa_max_size(struct crypto_akcipher *tfm)
+{
+	struct virtio_crypto_akcipher_ctx *ctx = akcipher_tfm_ctx(tfm);
+	struct virtio_crypto_rsa_ctx *rsa_ctx = &ctx->rsa_ctx;
+
+	return mpi_get_size(rsa_ctx->n);
+}
+
+static int virtio_crypto_rsa_init_tfm(struct crypto_akcipher *tfm)
+{
+	struct virtio_crypto_akcipher_ctx *ctx = akcipher_tfm_ctx(tfm);
+
+	ctx->tfm = tfm;
+	ctx->enginectx.op.do_one_request = virtio_crypto_rsa_do_req;
+	ctx->enginectx.op.prepare_request = NULL;
+	ctx->enginectx.op.unprepare_request = NULL;
+
+	akcipher_set_reqsize(tfm,
+			     sizeof(struct virtio_crypto_akcipher_request));
+
+	return 0;
+}
+
+static void virtio_crypto_rsa_exit_tfm(struct crypto_akcipher *tfm)
+{
+	struct virtio_crypto_akcipher_ctx *ctx = akcipher_tfm_ctx(tfm);
+	struct virtio_crypto_rsa_ctx *rsa_ctx = &ctx->rsa_ctx;
+
+	virtio_crypto_alg_akcipher_close_session(ctx);
+	virtcrypto_dev_put(ctx->vcrypto);
+	mpi_free(rsa_ctx->n);
+	rsa_ctx->n = NULL;
+}
+
+static struct virtio_crypto_akcipher_algo virtio_crypto_akcipher_algs[] = {
+	{
+		.algonum = VIRTIO_CRYPTO_AKCIPHER_RSA,
+		.service = VIRTIO_CRYPTO_SERVICE_AKCIPHER,
+		.algo = {
+			.encrypt = virtio_crypto_rsa_encrypt,
+			.decrypt = virtio_crypto_rsa_decrypt,
+			.set_pub_key = virtio_crypto_rsa_raw_set_pub_key,
+			.set_priv_key = virtio_crypto_rsa_raw_set_priv_key,
+			.max_size = virtio_crypto_rsa_max_size,
+			.init = virtio_crypto_rsa_init_tfm,
+			.exit = virtio_crypto_rsa_exit_tfm,
+			.base = {
+				.cra_name = "rsa",
+				.cra_driver_name = "virtio-crypto-rsa",
+				.cra_priority = 150,
+				.cra_module = THIS_MODULE,
+				.cra_ctxsize = sizeof(struct virtio_crypto_akcipher_ctx),
+			},
+		},
+	},
+	{
+		.algonum = VIRTIO_CRYPTO_AKCIPHER_RSA,
+		.service = VIRTIO_CRYPTO_SERVICE_AKCIPHER,
+		.algo = {
+			.encrypt = virtio_crypto_rsa_encrypt,
+			.decrypt = virtio_crypto_rsa_decrypt,
+			.sign = virtio_crypto_rsa_sign,
+			.verify = virtio_crypto_rsa_verify,
+			.set_pub_key = virtio_crypto_p1pad_rsa_sha1_set_pub_key,
+			.set_priv_key = virtio_crypto_p1pad_rsa_sha1_set_priv_key,
+			.max_size = virtio_crypto_rsa_max_size,
+			.init = virtio_crypto_rsa_init_tfm,
+			.exit = virtio_crypto_rsa_exit_tfm,
+			.base = {
+				.cra_name = "pkcs1pad(rsa,sha1)",
+				.cra_driver_name = "virtio-pkcs1-rsa-with-sha1",
+				.cra_priority = 150,
+				.cra_module = THIS_MODULE,
+				.cra_ctxsize = sizeof(struct virtio_crypto_akcipher_ctx),
+			},
+		},
+	},
+};
+
+int virtio_crypto_akcipher_algs_register(struct virtio_crypto *vcrypto)
+{
+	int ret = 0;
+	int i = 0;
+
+	mutex_lock(&algs_lock);
+
+	for (i = 0; i < ARRAY_SIZE(virtio_crypto_akcipher_algs); i++) {
+		uint32_t service = virtio_crypto_akcipher_algs[i].service;
+		uint32_t algonum = virtio_crypto_akcipher_algs[i].algonum;
+
+		if (!virtcrypto_algo_is_supported(vcrypto, service, algonum))
+			continue;
+
+		if (virtio_crypto_akcipher_algs[i].active_devs == 0) {
+			ret = crypto_register_akcipher(&virtio_crypto_akcipher_algs[i].algo);
+			if (ret)
+				goto unlock;
+		}
+
+		virtio_crypto_akcipher_algs[i].active_devs++;
+		dev_info(&vcrypto->vdev->dev, "Registered akcipher algo %s\n",
+			 virtio_crypto_akcipher_algs[i].algo.base.cra_name);
+	}
+
+unlock:
+	mutex_unlock(&algs_lock);
+	return ret;
+}
+
+void virtio_crypto_akcipher_algs_unregister(struct virtio_crypto *vcrypto)
+{
+	int i = 0;
+
+	mutex_lock(&algs_lock);
+
+	for (i = 0; i < ARRAY_SIZE(virtio_crypto_akcipher_algs); i++) {
+		uint32_t service = virtio_crypto_akcipher_algs[i].service;
+		uint32_t algonum = virtio_crypto_akcipher_algs[i].algonum;
+
+		if (virtio_crypto_akcipher_algs[i].active_devs == 0 ||
+		    !virtcrypto_algo_is_supported(vcrypto, service, algonum))
+			continue;
+
+		if (virtio_crypto_akcipher_algs[i].active_devs == 1)
+			crypto_unregister_akcipher(&virtio_crypto_akcipher_algs[i].algo);
+
+		virtio_crypto_akcipher_algs[i].active_devs--;
+	}
+
+	mutex_unlock(&algs_lock);
+}