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, 373 insertions, 0 deletions

diff --git a/lib/crypto/chacha20poly1305.c b/lib/crypto/chacha20poly1305.c
new file mode 100644
index 000000000..fa6a9440f
--- /dev/null
+++ b/lib/crypto/chacha20poly1305.c
@@ -0,0 +1,373 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ *
+ * This is an implementation of the ChaCha20Poly1305 AEAD construction.
+ *
+ * Information: https://tools.ietf.org/html/rfc8439
+ */
+
+#include <crypto/algapi.h>
+#include <crypto/chacha20poly1305.h>
+#include <crypto/chacha.h>
+#include <crypto/poly1305.h>
+#include <crypto/scatterwalk.h>
+
+#include <asm/unaligned.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+
+#define CHACHA_KEY_WORDS	(CHACHA_KEY_SIZE / sizeof(u32))
+
+static void chacha_load_key(u32 *k, const u8 *in)
+{
+	k[0] = get_unaligned_le32(in);
+	k[1] = get_unaligned_le32(in + 4);
+	k[2] = get_unaligned_le32(in + 8);
+	k[3] = get_unaligned_le32(in + 12);
+	k[4] = get_unaligned_le32(in + 16);
+	k[5] = get_unaligned_le32(in + 20);
+	k[6] = get_unaligned_le32(in + 24);
+	k[7] = get_unaligned_le32(in + 28);
+}
+
+static void xchacha_init(u32 *chacha_state, const u8 *key, const u8 *nonce)
+{
+	u32 k[CHACHA_KEY_WORDS];
+	u8 iv[CHACHA_IV_SIZE];
+
+	memset(iv, 0, 8);
+	memcpy(iv + 8, nonce + 16, 8);
+
+	chacha_load_key(k, key);
+
+	/* Compute the subkey given the original key and first 128 nonce bits */
+	chacha_init(chacha_state, k, nonce);
+	hchacha_block(chacha_state, k, 20);
+
+	chacha_init(chacha_state, k, iv);
+
+	memzero_explicit(k, sizeof(k));
+	memzero_explicit(iv, sizeof(iv));
+}
+
+static void
+__chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
+			   const u8 *ad, const size_t ad_len, u32 *chacha_state)
+{
+	const u8 *pad0 = page_address(ZERO_PAGE(0));
+	struct poly1305_desc_ctx poly1305_state;
+	union {
+		u8 block0[POLY1305_KEY_SIZE];
+		__le64 lens[2];
+	} b;
+
+	chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
+	poly1305_init(&poly1305_state, b.block0);
+
+	poly1305_update(&poly1305_state, ad, ad_len);
+	if (ad_len & 0xf)
+		poly1305_update(&poly1305_state, pad0, 0x10 - (ad_len & 0xf));
+
+	chacha20_crypt(chacha_state, dst, src, src_len);
+
+	poly1305_update(&poly1305_state, dst, src_len);
+	if (src_len & 0xf)
+		poly1305_update(&poly1305_state, pad0, 0x10 - (src_len & 0xf));
+
+	b.lens[0] = cpu_to_le64(ad_len);
+	b.lens[1] = cpu_to_le64(src_len);
+	poly1305_update(&poly1305_state, (u8 *)b.lens, sizeof(b.lens));
+
+	poly1305_final(&poly1305_state, dst + src_len);
+
+	memzero_explicit(chacha_state, CHACHA_STATE_WORDS * sizeof(u32));
+	memzero_explicit(&b, sizeof(b));
+}
+
+void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
+			      const u8 *ad, const size_t ad_len,
+			      const u64 nonce,
+			      const u8 key[CHACHA20POLY1305_KEY_SIZE])
+{
+	u32 chacha_state[CHACHA_STATE_WORDS];
+	u32 k[CHACHA_KEY_WORDS];
+	__le64 iv[2];
+
+	chacha_load_key(k, key);
+
+	iv[0] = 0;
+	iv[1] = cpu_to_le64(nonce);
+
+	chacha_init(chacha_state, k, (u8 *)iv);
+	__chacha20poly1305_encrypt(dst, src, src_len, ad, ad_len, chacha_state);
+
+	memzero_explicit(iv, sizeof(iv));
+	memzero_explicit(k, sizeof(k));
+}
+EXPORT_SYMBOL(chacha20poly1305_encrypt);
+
+void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
+			       const u8 *ad, const size_t ad_len,
+			       const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
+			       const u8 key[CHACHA20POLY1305_KEY_SIZE])
+{
+	u32 chacha_state[CHACHA_STATE_WORDS];
+
+	xchacha_init(chacha_state, key, nonce);
+	__chacha20poly1305_encrypt(dst, src, src_len, ad, ad_len, chacha_state);
+}
+EXPORT_SYMBOL(xchacha20poly1305_encrypt);
+
+static bool
+__chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
+			   const u8 *ad, const size_t ad_len, u32 *chacha_state)
+{
+	const u8 *pad0 = page_address(ZERO_PAGE(0));
+	struct poly1305_desc_ctx poly1305_state;
+	size_t dst_len;
+	int ret;
+	union {
+		u8 block0[POLY1305_KEY_SIZE];
+		u8 mac[POLY1305_DIGEST_SIZE];
+		__le64 lens[2];
+	} b;
+
+	if (unlikely(src_len < POLY1305_DIGEST_SIZE))
+		return false;
+
+	chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
+	poly1305_init(&poly1305_state, b.block0);
+
+	poly1305_update(&poly1305_state, ad, ad_len);
+	if (ad_len & 0xf)
+		poly1305_update(&poly1305_state, pad0, 0x10 - (ad_len & 0xf));
+
+	dst_len = src_len - POLY1305_DIGEST_SIZE;
+	poly1305_update(&poly1305_state, src, dst_len);
+	if (dst_len & 0xf)
+		poly1305_update(&poly1305_state, pad0, 0x10 - (dst_len & 0xf));
+
+	b.lens[0] = cpu_to_le64(ad_len);
+	b.lens[1] = cpu_to_le64(dst_len);
+	poly1305_update(&poly1305_state, (u8 *)b.lens, sizeof(b.lens));
+
+	poly1305_final(&poly1305_state, b.mac);
+
+	ret = crypto_memneq(b.mac, src + dst_len, POLY1305_DIGEST_SIZE);
+	if (likely(!ret))
+		chacha20_crypt(chacha_state, dst, src, dst_len);
+
+	memzero_explicit(&b, sizeof(b));
+
+	return !ret;
+}
+
+bool chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
+			      const u8 *ad, const size_t ad_len,
+			      const u64 nonce,
+			      const u8 key[CHACHA20POLY1305_KEY_SIZE])
+{
+	u32 chacha_state[CHACHA_STATE_WORDS];
+	u32 k[CHACHA_KEY_WORDS];
+	__le64 iv[2];
+	bool ret;
+
+	chacha_load_key(k, key);
+
+	iv[0] = 0;
+	iv[1] = cpu_to_le64(nonce);
+
+	chacha_init(chacha_state, k, (u8 *)iv);
+	ret = __chacha20poly1305_decrypt(dst, src, src_len, ad, ad_len,
+					 chacha_state);
+
+	memzero_explicit(chacha_state, sizeof(chacha_state));
+	memzero_explicit(iv, sizeof(iv));
+	memzero_explicit(k, sizeof(k));
+	return ret;
+}
+EXPORT_SYMBOL(chacha20poly1305_decrypt);
+
+bool xchacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
+			       const u8 *ad, const size_t ad_len,
+			       const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
+			       const u8 key[CHACHA20POLY1305_KEY_SIZE])
+{
+	u32 chacha_state[CHACHA_STATE_WORDS];
+
+	xchacha_init(chacha_state, key, nonce);
+	return __chacha20poly1305_decrypt(dst, src, src_len, ad, ad_len,
+					  chacha_state);
+}
+EXPORT_SYMBOL(xchacha20poly1305_decrypt);
+
+static
+bool chacha20poly1305_crypt_sg_inplace(struct scatterlist *src,
+				       const size_t src_len,
+				       const u8 *ad, const size_t ad_len,
+				       const u64 nonce,
+				       const u8 key[CHACHA20POLY1305_KEY_SIZE],
+				       int encrypt)
+{
+	const u8 *pad0 = page_address(ZERO_PAGE(0));
+	struct poly1305_desc_ctx poly1305_state;
+	u32 chacha_state[CHACHA_STATE_WORDS];
+	struct sg_mapping_iter miter;
+	size_t partial = 0;
+	unsigned int flags;
+	bool ret = true;
+	int sl;
+	union {
+		struct {
+			u32 k[CHACHA_KEY_WORDS];
+			__le64 iv[2];
+		};
+		u8 block0[POLY1305_KEY_SIZE];
+		u8 chacha_stream[CHACHA_BLOCK_SIZE];
+		struct {
+			u8 mac[2][POLY1305_DIGEST_SIZE];
+		};
+		__le64 lens[2];
+	} b __aligned(16);
+
+	if (WARN_ON(src_len > INT_MAX))
+		return false;
+
+	chacha_load_key(b.k, key);
+
+	b.iv[0] = 0;
+	b.iv[1] = cpu_to_le64(nonce);
+
+	chacha_init(chacha_state, b.k, (u8 *)b.iv);
+	chacha20_crypt(chacha_state, b.block0, pad0, sizeof(b.block0));
+	poly1305_init(&poly1305_state, b.block0);
+
+	if (unlikely(ad_len)) {
+		poly1305_update(&poly1305_state, ad, ad_len);
+		if (ad_len & 0xf)
+			poly1305_update(&poly1305_state, pad0, 0x10 - (ad_len & 0xf));
+	}
+
+	flags = SG_MITER_TO_SG | SG_MITER_ATOMIC;
+
+	sg_miter_start(&miter, src, sg_nents(src), flags);
+
+	for (sl = src_len; sl > 0 && sg_miter_next(&miter); sl -= miter.length) {
+		u8 *addr = miter.addr;
+		size_t length = min_t(size_t, sl, miter.length);
+
+		if (!encrypt)
+			poly1305_update(&poly1305_state, addr, length);
+
+		if (unlikely(partial)) {
+			size_t l = min(length, CHACHA_BLOCK_SIZE - partial);
+
+			crypto_xor(addr, b.chacha_stream + partial, l);
+			partial = (partial + l) & (CHACHA_BLOCK_SIZE - 1);
+
+			addr += l;
+			length -= l;
+		}
+
+		if (likely(length >= CHACHA_BLOCK_SIZE || length == sl)) {
+			size_t l = length;
+
+			if (unlikely(length < sl))
+				l &= ~(CHACHA_BLOCK_SIZE - 1);
+			chacha20_crypt(chacha_state, addr, addr, l);
+			addr += l;
+			length -= l;
+		}
+
+		if (unlikely(length > 0)) {
+			chacha20_crypt(chacha_state, b.chacha_stream, pad0,
+				       CHACHA_BLOCK_SIZE);
+			crypto_xor(addr, b.chacha_stream, length);
+			partial = length;
+		}
+
+		if (encrypt)
+			poly1305_update(&poly1305_state, miter.addr,
+					min_t(size_t, sl, miter.length));
+	}
+
+	if (src_len & 0xf)
+		poly1305_update(&poly1305_state, pad0, 0x10 - (src_len & 0xf));
+
+	b.lens[0] = cpu_to_le64(ad_len);
+	b.lens[1] = cpu_to_le64(src_len);
+	poly1305_update(&poly1305_state, (u8 *)b.lens, sizeof(b.lens));
+
+	if (likely(sl <= -POLY1305_DIGEST_SIZE)) {
+		if (encrypt) {
+			poly1305_final(&poly1305_state,
+				       miter.addr + miter.length + sl);
+			ret = true;
+		} else {
+			poly1305_final(&poly1305_state, b.mac[0]);
+			ret = !crypto_memneq(b.mac[0],
+					     miter.addr + miter.length + sl,
+					     POLY1305_DIGEST_SIZE);
+		}
+	}
+
+	sg_miter_stop(&miter);
+
+	if (unlikely(sl > -POLY1305_DIGEST_SIZE)) {
+		poly1305_final(&poly1305_state, b.mac[1]);
+		scatterwalk_map_and_copy(b.mac[encrypt], src, src_len,
+					 sizeof(b.mac[1]), encrypt);
+		ret = encrypt ||
+		      !crypto_memneq(b.mac[0], b.mac[1], POLY1305_DIGEST_SIZE);
+	}
+
+	memzero_explicit(chacha_state, sizeof(chacha_state));
+	memzero_explicit(&b, sizeof(b));
+
+	return ret;
+}
+
+bool chacha20poly1305_encrypt_sg_inplace(struct scatterlist *src, size_t src_len,
+					 const u8 *ad, const size_t ad_len,
+					 const u64 nonce,
+					 const u8 key[CHACHA20POLY1305_KEY_SIZE])
+{
+	return chacha20poly1305_crypt_sg_inplace(src, src_len, ad, ad_len,
+						 nonce, key, 1);
+}
+EXPORT_SYMBOL(chacha20poly1305_encrypt_sg_inplace);
+
+bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len,
+					 const u8 *ad, const size_t ad_len,
+					 const u64 nonce,
+					 const u8 key[CHACHA20POLY1305_KEY_SIZE])
+{
+	if (unlikely(src_len < POLY1305_DIGEST_SIZE))
+		return false;
+
+	return chacha20poly1305_crypt_sg_inplace(src,
+						 src_len - POLY1305_DIGEST_SIZE,
+						 ad, ad_len, nonce, key, 0);
+}
+EXPORT_SYMBOL(chacha20poly1305_decrypt_sg_inplace);
+
+static int __init chacha20poly1305_init(void)
+{
+	if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) &&
+	    WARN_ON(!chacha20poly1305_selftest()))
+		return -ENODEV;
+	return 0;
+}
+
+static void __exit chacha20poly1305_exit(void)
+{
+}
+
+module_init(chacha20poly1305_init);
+module_exit(chacha20poly1305_exit);
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ChaCha20Poly1305 AEAD construction");
+MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");