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, 613 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c b/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
new file mode 100644
index 000000000..c0dcce8ae
--- /dev/null
+++ b/drivers/net/ethernet/netronome/nfp/crypto/ipsec.c
@@ -0,0 +1,613 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/* Copyright (C) 2018 Netronome Systems, Inc */
+/* Copyright (C) 2021 Corigine, Inc */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <asm/unaligned.h>
+#include <linux/ktime.h>
+#include <net/xfrm.h>
+
+#include "../nfpcore/nfp_dev.h"
+#include "../nfp_net_ctrl.h"
+#include "../nfp_net.h"
+#include "crypto.h"
+
+#define NFP_NET_IPSEC_MAX_SA_CNT  (16 * 1024) /* Firmware support a maximum of 16K SA offload */
+
+/* IPsec config message cmd codes */
+enum nfp_ipsec_cfg_mssg_cmd_codes {
+	NFP_IPSEC_CFG_MSSG_ADD_SA,	 /* Add a new SA */
+	NFP_IPSEC_CFG_MSSG_INV_SA	 /* Invalidate an existing SA */
+};
+
+/* IPsec config message response codes */
+enum nfp_ipsec_cfg_mssg_rsp_codes {
+	NFP_IPSEC_CFG_MSSG_OK,
+	NFP_IPSEC_CFG_MSSG_FAILED,
+	NFP_IPSEC_CFG_MSSG_SA_VALID,
+	NFP_IPSEC_CFG_MSSG_SA_HASH_ADD_FAILED,
+	NFP_IPSEC_CFG_MSSG_SA_HASH_DEL_FAILED,
+	NFP_IPSEC_CFG_MSSG_SA_INVALID_CMD
+};
+
+/* Protocol */
+enum nfp_ipsec_sa_prot {
+	NFP_IPSEC_PROTOCOL_AH = 0,
+	NFP_IPSEC_PROTOCOL_ESP = 1
+};
+
+/* Mode */
+enum nfp_ipsec_sa_mode {
+	NFP_IPSEC_PROTMODE_TRANSPORT = 0,
+	NFP_IPSEC_PROTMODE_TUNNEL = 1
+};
+
+/* Cipher types */
+enum nfp_ipsec_sa_cipher {
+	NFP_IPSEC_CIPHER_NULL,
+	NFP_IPSEC_CIPHER_3DES,
+	NFP_IPSEC_CIPHER_AES128,
+	NFP_IPSEC_CIPHER_AES192,
+	NFP_IPSEC_CIPHER_AES256,
+	NFP_IPSEC_CIPHER_AES128_NULL,
+	NFP_IPSEC_CIPHER_AES192_NULL,
+	NFP_IPSEC_CIPHER_AES256_NULL,
+	NFP_IPSEC_CIPHER_CHACHA20
+};
+
+/* Cipher modes */
+enum nfp_ipsec_sa_cipher_mode {
+	NFP_IPSEC_CIMODE_ECB,
+	NFP_IPSEC_CIMODE_CBC,
+	NFP_IPSEC_CIMODE_CFB,
+	NFP_IPSEC_CIMODE_OFB,
+	NFP_IPSEC_CIMODE_CTR
+};
+
+/* Hash types */
+enum nfp_ipsec_sa_hash_type {
+	NFP_IPSEC_HASH_NONE,
+	NFP_IPSEC_HASH_MD5_96,
+	NFP_IPSEC_HASH_SHA1_96,
+	NFP_IPSEC_HASH_SHA256_96,
+	NFP_IPSEC_HASH_SHA384_96,
+	NFP_IPSEC_HASH_SHA512_96,
+	NFP_IPSEC_HASH_MD5_128,
+	NFP_IPSEC_HASH_SHA1_80,
+	NFP_IPSEC_HASH_SHA256_128,
+	NFP_IPSEC_HASH_SHA384_192,
+	NFP_IPSEC_HASH_SHA512_256,
+	NFP_IPSEC_HASH_GF128_128,
+	NFP_IPSEC_HASH_POLY1305_128
+};
+
+/* IPSEC_CFG_MSSG_ADD_SA */
+struct nfp_ipsec_cfg_add_sa {
+	u32 ciph_key[8];		  /* Cipher Key */
+	union {
+		u32 auth_key[16];	  /* Authentication Key */
+		struct nfp_ipsec_aesgcm { /* AES-GCM-ESP fields */
+			u32 salt;	  /* Initialized with SA */
+			u32 resv[15];
+		} aesgcm_fields;
+	};
+	struct sa_ctrl_word {
+		uint32_t hash   :4;	  /* From nfp_ipsec_sa_hash_type */
+		uint32_t cimode :4;	  /* From nfp_ipsec_sa_cipher_mode */
+		uint32_t cipher :4;	  /* From nfp_ipsec_sa_cipher */
+		uint32_t mode   :2;	  /* From nfp_ipsec_sa_mode */
+		uint32_t proto  :2;	  /* From nfp_ipsec_sa_prot */
+		uint32_t dir :1;	  /* SA direction */
+		uint32_t resv0 :12;
+		uint32_t encap_dsbl:1;	  /* Encap/Decap disable */
+		uint32_t resv1 :2;	  /* Must be set to 0 */
+	} ctrl_word;
+	u32 spi;			  /* SPI Value */
+	uint32_t pmtu_limit :16;          /* PMTU Limit */
+	uint32_t resv0 :5;
+	uint32_t ipv6       :1;		  /* Outbound IPv6 addr format */
+	uint32_t resv1	 :10;
+	u32 resv2[2];
+	u32 src_ip[4];			  /* Src IP addr */
+	u32 dst_ip[4];			  /* Dst IP addr */
+	u32 resv3[6];
+};
+
+/* IPSEC_CFG_MSSG */
+struct nfp_ipsec_cfg_mssg {
+	union {
+		struct{
+			uint32_t cmd:16;     /* One of nfp_ipsec_cfg_mssg_cmd_codes */
+			uint32_t rsp:16;     /* One of nfp_ipsec_cfg_mssg_rsp_codes */
+			uint32_t sa_idx:16;  /* SA table index */
+			uint32_t spare0:16;
+			struct nfp_ipsec_cfg_add_sa cfg_add_sa;
+		};
+		u32 raw[64];
+	};
+};
+
+static int nfp_net_ipsec_cfg(struct nfp_net *nn, struct nfp_mbox_amsg_entry *entry)
+{
+	unsigned int offset = nn->tlv_caps.mbox_off + NFP_NET_CFG_MBOX_SIMPLE_VAL;
+	struct nfp_ipsec_cfg_mssg *msg = (struct nfp_ipsec_cfg_mssg *)entry->msg;
+	int i, msg_size, ret;
+
+	ret = nfp_net_mbox_lock(nn, sizeof(*msg));
+	if (ret)
+		return ret;
+
+	msg_size = ARRAY_SIZE(msg->raw);
+	for (i = 0; i < msg_size; i++)
+		nn_writel(nn, offset + 4 * i, msg->raw[i]);
+
+	ret = nfp_net_mbox_reconfig(nn, entry->cmd);
+	if (ret < 0) {
+		nn_ctrl_bar_unlock(nn);
+		return ret;
+	}
+
+	/* For now we always read the whole message response back */
+	for (i = 0; i < msg_size; i++)
+		msg->raw[i] = nn_readl(nn, offset + 4 * i);
+
+	nn_ctrl_bar_unlock(nn);
+
+	switch (msg->rsp) {
+	case NFP_IPSEC_CFG_MSSG_OK:
+		return 0;
+	case NFP_IPSEC_CFG_MSSG_SA_INVALID_CMD:
+		return -EINVAL;
+	case NFP_IPSEC_CFG_MSSG_SA_VALID:
+		return -EEXIST;
+	case NFP_IPSEC_CFG_MSSG_FAILED:
+	case NFP_IPSEC_CFG_MSSG_SA_HASH_ADD_FAILED:
+	case NFP_IPSEC_CFG_MSSG_SA_HASH_DEL_FAILED:
+		return -EIO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int set_aes_keylen(struct nfp_ipsec_cfg_add_sa *cfg, int alg, int keylen)
+{
+	bool aes_gmac = (alg == SADB_X_EALG_NULL_AES_GMAC);
+
+	switch (keylen) {
+	case 128:
+		cfg->ctrl_word.cipher = aes_gmac ? NFP_IPSEC_CIPHER_AES128_NULL :
+						   NFP_IPSEC_CIPHER_AES128;
+		break;
+	case 192:
+		cfg->ctrl_word.cipher = aes_gmac ? NFP_IPSEC_CIPHER_AES192_NULL :
+						   NFP_IPSEC_CIPHER_AES192;
+		break;
+	case 256:
+		cfg->ctrl_word.cipher = aes_gmac ? NFP_IPSEC_CIPHER_AES256_NULL :
+						   NFP_IPSEC_CIPHER_AES256;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void set_md5hmac(struct nfp_ipsec_cfg_add_sa *cfg, int *trunc_len)
+{
+	switch (*trunc_len) {
+	case 96:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_MD5_96;
+		break;
+	case 128:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_MD5_128;
+		break;
+	default:
+		*trunc_len = 0;
+	}
+}
+
+static void set_sha1hmac(struct nfp_ipsec_cfg_add_sa *cfg, int *trunc_len)
+{
+	switch (*trunc_len) {
+	case 96:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA1_96;
+		break;
+	case 80:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA1_80;
+		break;
+	default:
+		*trunc_len = 0;
+	}
+}
+
+static void set_sha2_256hmac(struct nfp_ipsec_cfg_add_sa *cfg, int *trunc_len)
+{
+	switch (*trunc_len) {
+	case 96:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA256_96;
+		break;
+	case 128:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA256_128;
+		break;
+	default:
+		*trunc_len = 0;
+	}
+}
+
+static void set_sha2_384hmac(struct nfp_ipsec_cfg_add_sa *cfg, int *trunc_len)
+{
+	switch (*trunc_len) {
+	case 96:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA384_96;
+		break;
+	case 192:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA384_192;
+		break;
+	default:
+		*trunc_len = 0;
+	}
+}
+
+static void set_sha2_512hmac(struct nfp_ipsec_cfg_add_sa *cfg, int *trunc_len)
+{
+	switch (*trunc_len) {
+	case 96:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA512_96;
+		break;
+	case 256:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_SHA512_256;
+		break;
+	default:
+		*trunc_len = 0;
+	}
+}
+
+static int nfp_net_xfrm_add_state(struct xfrm_state *x,
+				  struct netlink_ext_ack *extack)
+{
+	struct net_device *netdev = x->xso.dev;
+	struct nfp_ipsec_cfg_mssg msg = {};
+	int i, key_len, trunc_len, err = 0;
+	struct nfp_ipsec_cfg_add_sa *cfg;
+	struct nfp_net *nn;
+	unsigned int saidx;
+
+	nn = netdev_priv(netdev);
+	cfg = &msg.cfg_add_sa;
+
+	/* General */
+	switch (x->props.mode) {
+	case XFRM_MODE_TUNNEL:
+		cfg->ctrl_word.mode = NFP_IPSEC_PROTMODE_TUNNEL;
+		break;
+	case XFRM_MODE_TRANSPORT:
+		cfg->ctrl_word.mode = NFP_IPSEC_PROTMODE_TRANSPORT;
+		break;
+	default:
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported mode for xfrm offload");
+		return -EINVAL;
+	}
+
+	switch (x->id.proto) {
+	case IPPROTO_ESP:
+		cfg->ctrl_word.proto = NFP_IPSEC_PROTOCOL_ESP;
+		break;
+	case IPPROTO_AH:
+		cfg->ctrl_word.proto = NFP_IPSEC_PROTOCOL_AH;
+		break;
+	default:
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported protocol for xfrm offload");
+		return -EINVAL;
+	}
+
+	if (x->props.flags & XFRM_STATE_ESN) {
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported XFRM_REPLAY_MODE_ESN for xfrm offload");
+		return -EINVAL;
+	}
+
+	if (x->xso.type != XFRM_DEV_OFFLOAD_CRYPTO) {
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported xfrm offload type");
+		return -EINVAL;
+	}
+
+	cfg->spi = ntohl(x->id.spi);
+
+	/* Hash/Authentication */
+	if (x->aalg)
+		trunc_len = x->aalg->alg_trunc_len;
+	else
+		trunc_len = 0;
+
+	switch (x->props.aalgo) {
+	case SADB_AALG_NONE:
+		if (x->aead) {
+			trunc_len = -1;
+		} else {
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported authentication algorithm");
+			return -EINVAL;
+		}
+		break;
+	case SADB_X_AALG_NULL:
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_NONE;
+		trunc_len = -1;
+		break;
+	case SADB_AALG_MD5HMAC:
+		if (nn->pdev->device == PCI_DEVICE_ID_NFP3800) {
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported authentication algorithm");
+			return -EINVAL;
+		}
+		set_md5hmac(cfg, &trunc_len);
+		break;
+	case SADB_AALG_SHA1HMAC:
+		set_sha1hmac(cfg, &trunc_len);
+		break;
+	case SADB_X_AALG_SHA2_256HMAC:
+		set_sha2_256hmac(cfg, &trunc_len);
+		break;
+	case SADB_X_AALG_SHA2_384HMAC:
+		set_sha2_384hmac(cfg, &trunc_len);
+		break;
+	case SADB_X_AALG_SHA2_512HMAC:
+		set_sha2_512hmac(cfg, &trunc_len);
+		break;
+	default:
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported authentication algorithm");
+		return -EINVAL;
+	}
+
+	if (!trunc_len) {
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported authentication algorithm trunc length");
+		return -EINVAL;
+	}
+
+	if (x->aalg) {
+		key_len = DIV_ROUND_UP(x->aalg->alg_key_len, BITS_PER_BYTE);
+		if (key_len > sizeof(cfg->auth_key)) {
+			NL_SET_ERR_MSG_MOD(extack, "Insufficient space for offloaded auth key");
+			return -EINVAL;
+		}
+		for (i = 0; i < key_len / sizeof(cfg->auth_key[0]) ; i++)
+			cfg->auth_key[i] = get_unaligned_be32(x->aalg->alg_key +
+							      sizeof(cfg->auth_key[0]) * i);
+	}
+
+	/* Encryption */
+	switch (x->props.ealgo) {
+	case SADB_EALG_NONE:
+	case SADB_EALG_NULL:
+		cfg->ctrl_word.cimode = NFP_IPSEC_CIMODE_CBC;
+		cfg->ctrl_word.cipher = NFP_IPSEC_CIPHER_NULL;
+		break;
+	case SADB_EALG_3DESCBC:
+		if (nn->pdev->device == PCI_DEVICE_ID_NFP3800) {
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported encryption algorithm for offload");
+			return -EINVAL;
+		}
+		cfg->ctrl_word.cimode = NFP_IPSEC_CIMODE_CBC;
+		cfg->ctrl_word.cipher = NFP_IPSEC_CIPHER_3DES;
+		break;
+	case SADB_X_EALG_AES_GCM_ICV16:
+	case SADB_X_EALG_NULL_AES_GMAC:
+		if (!x->aead) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid AES key data");
+			return -EINVAL;
+		}
+
+		if (x->aead->alg_icv_len != 128) {
+			NL_SET_ERR_MSG_MOD(extack, "ICV must be 128bit with SADB_X_EALG_AES_GCM_ICV16");
+			return -EINVAL;
+		}
+		cfg->ctrl_word.cimode = NFP_IPSEC_CIMODE_CTR;
+		cfg->ctrl_word.hash = NFP_IPSEC_HASH_GF128_128;
+
+		/* Aead->alg_key_len includes 32-bit salt */
+		if (set_aes_keylen(cfg, x->props.ealgo, x->aead->alg_key_len - 32)) {
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported AES key length");
+			return -EINVAL;
+		}
+		break;
+	case SADB_X_EALG_AESCBC:
+		cfg->ctrl_word.cimode = NFP_IPSEC_CIMODE_CBC;
+		if (!x->ealg) {
+			NL_SET_ERR_MSG_MOD(extack, "Invalid AES key data");
+			return -EINVAL;
+		}
+		if (set_aes_keylen(cfg, x->props.ealgo, x->ealg->alg_key_len) < 0) {
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported AES key length");
+			return -EINVAL;
+		}
+		break;
+	default:
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported encryption algorithm for offload");
+		return -EINVAL;
+	}
+
+	if (x->aead) {
+		int salt_len = 4;
+
+		key_len = DIV_ROUND_UP(x->aead->alg_key_len, BITS_PER_BYTE);
+		key_len -= salt_len;
+
+		if (key_len > sizeof(cfg->ciph_key)) {
+			NL_SET_ERR_MSG_MOD(extack, "aead: Insufficient space for offloaded key");
+			return -EINVAL;
+		}
+
+		for (i = 0; i < key_len / sizeof(cfg->ciph_key[0]) ; i++)
+			cfg->ciph_key[i] = get_unaligned_be32(x->aead->alg_key +
+							      sizeof(cfg->ciph_key[0]) * i);
+
+		/* Load up the salt */
+		cfg->aesgcm_fields.salt = get_unaligned_be32(x->aead->alg_key + key_len);
+	}
+
+	if (x->ealg) {
+		key_len = DIV_ROUND_UP(x->ealg->alg_key_len, BITS_PER_BYTE);
+
+		if (key_len > sizeof(cfg->ciph_key)) {
+			NL_SET_ERR_MSG_MOD(extack, "ealg: Insufficient space for offloaded key");
+			return -EINVAL;
+		}
+		for (i = 0; i < key_len / sizeof(cfg->ciph_key[0]) ; i++)
+			cfg->ciph_key[i] = get_unaligned_be32(x->ealg->alg_key +
+							      sizeof(cfg->ciph_key[0]) * i);
+	}
+
+	/* IP related info */
+	switch (x->props.family) {
+	case AF_INET:
+		cfg->ipv6 = 0;
+		cfg->src_ip[0] = ntohl(x->props.saddr.a4);
+		cfg->dst_ip[0] = ntohl(x->id.daddr.a4);
+		break;
+	case AF_INET6:
+		cfg->ipv6 = 1;
+		for (i = 0; i < 4; i++) {
+			cfg->src_ip[i] = ntohl(x->props.saddr.a6[i]);
+			cfg->dst_ip[i] = ntohl(x->id.daddr.a6[i]);
+		}
+		break;
+	default:
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported address family");
+		return -EINVAL;
+	}
+
+	/* Maximum nic IPsec code could handle. Other limits may apply. */
+	cfg->pmtu_limit = 0xffff;
+	cfg->ctrl_word.encap_dsbl = 1;
+
+	/* SA direction */
+	cfg->ctrl_word.dir = x->xso.dir;
+
+	/* Find unused SA data*/
+	err = xa_alloc(&nn->xa_ipsec, &saidx, x,
+		       XA_LIMIT(0, NFP_NET_IPSEC_MAX_SA_CNT - 1), GFP_KERNEL);
+	if (err < 0) {
+		NL_SET_ERR_MSG_MOD(extack, "Unable to get sa_data number for IPsec");
+		return err;
+	}
+
+	/* Allocate saidx and commit the SA */
+	msg.cmd = NFP_IPSEC_CFG_MSSG_ADD_SA;
+	msg.sa_idx = saidx;
+	err = nfp_net_sched_mbox_amsg_work(nn, NFP_NET_CFG_MBOX_CMD_IPSEC, &msg,
+					   sizeof(msg), nfp_net_ipsec_cfg);
+	if (err) {
+		xa_erase(&nn->xa_ipsec, saidx);
+		NL_SET_ERR_MSG_MOD(extack, "Failed to issue IPsec command");
+		return err;
+	}
+
+	/* 0 is invalid offload_handle for kernel */
+	x->xso.offload_handle = saidx + 1;
+	return 0;
+}
+
+static void nfp_net_xfrm_del_state(struct xfrm_state *x)
+{
+	struct nfp_ipsec_cfg_mssg msg = {
+		.cmd = NFP_IPSEC_CFG_MSSG_INV_SA,
+		.sa_idx = x->xso.offload_handle - 1,
+	};
+	struct net_device *netdev = x->xso.dev;
+	struct nfp_net *nn;
+	int err;
+
+	nn = netdev_priv(netdev);
+	err = nfp_net_sched_mbox_amsg_work(nn, NFP_NET_CFG_MBOX_CMD_IPSEC, &msg,
+					   sizeof(msg), nfp_net_ipsec_cfg);
+	if (err)
+		nn_warn(nn, "Failed to invalidate SA in hardware\n");
+
+	xa_erase(&nn->xa_ipsec, x->xso.offload_handle - 1);
+}
+
+static bool nfp_net_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *x)
+{
+	if (x->props.family == AF_INET)
+		/* Offload with IPv4 options is not supported yet */
+		return ip_hdr(skb)->ihl == 5;
+
+	/* Offload with IPv6 extension headers is not support yet */
+	return !(ipv6_ext_hdr(ipv6_hdr(skb)->nexthdr));
+}
+
+static const struct xfrmdev_ops nfp_net_ipsec_xfrmdev_ops = {
+	.xdo_dev_state_add = nfp_net_xfrm_add_state,
+	.xdo_dev_state_delete = nfp_net_xfrm_del_state,
+	.xdo_dev_offload_ok = nfp_net_ipsec_offload_ok,
+};
+
+void nfp_net_ipsec_init(struct nfp_net *nn)
+{
+	if (!(nn->cap_w1 & NFP_NET_CFG_CTRL_IPSEC))
+		return;
+
+	xa_init_flags(&nn->xa_ipsec, XA_FLAGS_ALLOC);
+	nn->dp.netdev->xfrmdev_ops = &nfp_net_ipsec_xfrmdev_ops;
+}
+
+void nfp_net_ipsec_clean(struct nfp_net *nn)
+{
+	if (!(nn->cap_w1 & NFP_NET_CFG_CTRL_IPSEC))
+		return;
+
+	WARN_ON(!xa_empty(&nn->xa_ipsec));
+	xa_destroy(&nn->xa_ipsec);
+}
+
+bool nfp_net_ipsec_tx_prep(struct nfp_net_dp *dp, struct sk_buff *skb,
+			   struct nfp_ipsec_offload *offload_info)
+{
+	struct xfrm_offload *xo = xfrm_offload(skb);
+	struct xfrm_state *x;
+
+	x = xfrm_input_state(skb);
+	if (!x)
+		return false;
+
+	offload_info->seq_hi = xo->seq.hi;
+	offload_info->seq_low = xo->seq.low;
+	offload_info->handle = x->xso.offload_handle;
+
+	return true;
+}
+
+int nfp_net_ipsec_rx(struct nfp_meta_parsed *meta, struct sk_buff *skb)
+{
+	struct net_device *netdev = skb->dev;
+	struct xfrm_offload *xo;
+	struct xfrm_state *x;
+	struct sec_path *sp;
+	struct nfp_net *nn;
+	u32 saidx;
+
+	nn = netdev_priv(netdev);
+
+	saidx = meta->ipsec_saidx - 1;
+	if (saidx >= NFP_NET_IPSEC_MAX_SA_CNT)
+		return -EINVAL;
+
+	sp = secpath_set(skb);
+	if (unlikely(!sp))
+		return -ENOMEM;
+
+	xa_lock(&nn->xa_ipsec);
+	x = xa_load(&nn->xa_ipsec, saidx);
+	xa_unlock(&nn->xa_ipsec);
+	if (!x)
+		return -EINVAL;
+
+	xfrm_state_hold(x);
+	sp->xvec[sp->len++] = x;
+	sp->olen++;
+	xo = xfrm_offload(skb);
+	xo->flags = CRYPTO_DONE;
+	xo->status = CRYPTO_SUCCESS;
+
+	return 0;
+}