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, 648 insertions, 0 deletions

diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
new file mode 100644
index 000000000..118082eae
--- /dev/null
+++ b/include/net/flow_offload.h
@@ -0,0 +1,648 @@
+#ifndef _NET_FLOW_OFFLOAD_H
+#define _NET_FLOW_OFFLOAD_H
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/netlink.h>
+#include <net/flow_dissector.h>
+
+struct flow_match {
+	struct flow_dissector	*dissector;
+	void			*mask;
+	void			*key;
+};
+
+struct flow_match_meta {
+	struct flow_dissector_key_meta *key, *mask;
+};
+
+struct flow_match_basic {
+	struct flow_dissector_key_basic *key, *mask;
+};
+
+struct flow_match_control {
+	struct flow_dissector_key_control *key, *mask;
+};
+
+struct flow_match_eth_addrs {
+	struct flow_dissector_key_eth_addrs *key, *mask;
+};
+
+struct flow_match_vlan {
+	struct flow_dissector_key_vlan *key, *mask;
+};
+
+struct flow_match_arp {
+	struct flow_dissector_key_arp *key, *mask;
+};
+
+struct flow_match_ipv4_addrs {
+	struct flow_dissector_key_ipv4_addrs *key, *mask;
+};
+
+struct flow_match_ipv6_addrs {
+	struct flow_dissector_key_ipv6_addrs *key, *mask;
+};
+
+struct flow_match_ip {
+	struct flow_dissector_key_ip *key, *mask;
+};
+
+struct flow_match_ports {
+	struct flow_dissector_key_ports *key, *mask;
+};
+
+struct flow_match_ports_range {
+	struct flow_dissector_key_ports_range *key, *mask;
+};
+
+struct flow_match_icmp {
+	struct flow_dissector_key_icmp *key, *mask;
+};
+
+struct flow_match_tcp {
+	struct flow_dissector_key_tcp *key, *mask;
+};
+
+struct flow_match_mpls {
+	struct flow_dissector_key_mpls *key, *mask;
+};
+
+struct flow_match_enc_keyid {
+	struct flow_dissector_key_keyid *key, *mask;
+};
+
+struct flow_match_enc_opts {
+	struct flow_dissector_key_enc_opts *key, *mask;
+};
+
+struct flow_match_ct {
+	struct flow_dissector_key_ct *key, *mask;
+};
+
+struct flow_match_pppoe {
+	struct flow_dissector_key_pppoe *key, *mask;
+};
+
+struct flow_match_l2tpv3 {
+	struct flow_dissector_key_l2tpv3 *key, *mask;
+};
+
+struct flow_rule;
+
+void flow_rule_match_meta(const struct flow_rule *rule,
+			  struct flow_match_meta *out);
+void flow_rule_match_basic(const struct flow_rule *rule,
+			   struct flow_match_basic *out);
+void flow_rule_match_control(const struct flow_rule *rule,
+			     struct flow_match_control *out);
+void flow_rule_match_eth_addrs(const struct flow_rule *rule,
+			       struct flow_match_eth_addrs *out);
+void flow_rule_match_vlan(const struct flow_rule *rule,
+			  struct flow_match_vlan *out);
+void flow_rule_match_cvlan(const struct flow_rule *rule,
+			   struct flow_match_vlan *out);
+void flow_rule_match_arp(const struct flow_rule *rule,
+			 struct flow_match_arp *out);
+void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
+				struct flow_match_ipv4_addrs *out);
+void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
+				struct flow_match_ipv6_addrs *out);
+void flow_rule_match_ip(const struct flow_rule *rule,
+			struct flow_match_ip *out);
+void flow_rule_match_ports(const struct flow_rule *rule,
+			   struct flow_match_ports *out);
+void flow_rule_match_ports_range(const struct flow_rule *rule,
+				 struct flow_match_ports_range *out);
+void flow_rule_match_tcp(const struct flow_rule *rule,
+			 struct flow_match_tcp *out);
+void flow_rule_match_icmp(const struct flow_rule *rule,
+			  struct flow_match_icmp *out);
+void flow_rule_match_mpls(const struct flow_rule *rule,
+			  struct flow_match_mpls *out);
+void flow_rule_match_enc_control(const struct flow_rule *rule,
+				 struct flow_match_control *out);
+void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
+				    struct flow_match_ipv4_addrs *out);
+void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
+				    struct flow_match_ipv6_addrs *out);
+void flow_rule_match_enc_ip(const struct flow_rule *rule,
+			    struct flow_match_ip *out);
+void flow_rule_match_enc_ports(const struct flow_rule *rule,
+			       struct flow_match_ports *out);
+void flow_rule_match_enc_keyid(const struct flow_rule *rule,
+			       struct flow_match_enc_keyid *out);
+void flow_rule_match_enc_opts(const struct flow_rule *rule,
+			      struct flow_match_enc_opts *out);
+void flow_rule_match_ct(const struct flow_rule *rule,
+			struct flow_match_ct *out);
+void flow_rule_match_pppoe(const struct flow_rule *rule,
+			   struct flow_match_pppoe *out);
+void flow_rule_match_l2tpv3(const struct flow_rule *rule,
+			    struct flow_match_l2tpv3 *out);
+
+enum flow_action_id {
+	FLOW_ACTION_ACCEPT		= 0,
+	FLOW_ACTION_DROP,
+	FLOW_ACTION_TRAP,
+	FLOW_ACTION_GOTO,
+	FLOW_ACTION_REDIRECT,
+	FLOW_ACTION_MIRRED,
+	FLOW_ACTION_REDIRECT_INGRESS,
+	FLOW_ACTION_MIRRED_INGRESS,
+	FLOW_ACTION_VLAN_PUSH,
+	FLOW_ACTION_VLAN_POP,
+	FLOW_ACTION_VLAN_MANGLE,
+	FLOW_ACTION_TUNNEL_ENCAP,
+	FLOW_ACTION_TUNNEL_DECAP,
+	FLOW_ACTION_MANGLE,
+	FLOW_ACTION_ADD,
+	FLOW_ACTION_CSUM,
+	FLOW_ACTION_MARK,
+	FLOW_ACTION_PTYPE,
+	FLOW_ACTION_PRIORITY,
+	FLOW_ACTION_RX_QUEUE_MAPPING,
+	FLOW_ACTION_WAKE,
+	FLOW_ACTION_QUEUE,
+	FLOW_ACTION_SAMPLE,
+	FLOW_ACTION_POLICE,
+	FLOW_ACTION_CT,
+	FLOW_ACTION_CT_METADATA,
+	FLOW_ACTION_MPLS_PUSH,
+	FLOW_ACTION_MPLS_POP,
+	FLOW_ACTION_MPLS_MANGLE,
+	FLOW_ACTION_GATE,
+	FLOW_ACTION_PPPOE_PUSH,
+	FLOW_ACTION_JUMP,
+	FLOW_ACTION_PIPE,
+	FLOW_ACTION_VLAN_PUSH_ETH,
+	FLOW_ACTION_VLAN_POP_ETH,
+	FLOW_ACTION_CONTINUE,
+	NUM_FLOW_ACTIONS,
+};
+
+/* This is mirroring enum pedit_header_type definition for easy mapping between
+ * tc pedit action. Legacy TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK is mapped to
+ * FLOW_ACT_MANGLE_UNSPEC, which is supported by no driver.
+ */
+enum flow_action_mangle_base {
+	FLOW_ACT_MANGLE_UNSPEC		= 0,
+	FLOW_ACT_MANGLE_HDR_TYPE_ETH,
+	FLOW_ACT_MANGLE_HDR_TYPE_IP4,
+	FLOW_ACT_MANGLE_HDR_TYPE_IP6,
+	FLOW_ACT_MANGLE_HDR_TYPE_TCP,
+	FLOW_ACT_MANGLE_HDR_TYPE_UDP,
+};
+
+enum flow_action_hw_stats_bit {
+	FLOW_ACTION_HW_STATS_IMMEDIATE_BIT,
+	FLOW_ACTION_HW_STATS_DELAYED_BIT,
+	FLOW_ACTION_HW_STATS_DISABLED_BIT,
+
+	FLOW_ACTION_HW_STATS_NUM_BITS
+};
+
+enum flow_action_hw_stats {
+	FLOW_ACTION_HW_STATS_IMMEDIATE =
+		BIT(FLOW_ACTION_HW_STATS_IMMEDIATE_BIT),
+	FLOW_ACTION_HW_STATS_DELAYED = BIT(FLOW_ACTION_HW_STATS_DELAYED_BIT),
+	FLOW_ACTION_HW_STATS_ANY = FLOW_ACTION_HW_STATS_IMMEDIATE |
+				   FLOW_ACTION_HW_STATS_DELAYED,
+	FLOW_ACTION_HW_STATS_DISABLED =
+		BIT(FLOW_ACTION_HW_STATS_DISABLED_BIT),
+	FLOW_ACTION_HW_STATS_DONT_CARE = BIT(FLOW_ACTION_HW_STATS_NUM_BITS) - 1,
+};
+
+typedef void (*action_destr)(void *priv);
+
+struct flow_action_cookie {
+	u32 cookie_len;
+	u8 cookie[];
+};
+
+struct flow_action_cookie *flow_action_cookie_create(void *data,
+						     unsigned int len,
+						     gfp_t gfp);
+void flow_action_cookie_destroy(struct flow_action_cookie *cookie);
+
+struct flow_action_entry {
+	enum flow_action_id		id;
+	u32				hw_index;
+	unsigned long			cookie;
+	u64				miss_cookie;
+	enum flow_action_hw_stats	hw_stats;
+	action_destr			destructor;
+	void				*destructor_priv;
+	union {
+		u32			chain_index;	/* FLOW_ACTION_GOTO */
+		struct net_device	*dev;		/* FLOW_ACTION_REDIRECT */
+		struct {				/* FLOW_ACTION_VLAN */
+			u16		vid;
+			__be16		proto;
+			u8		prio;
+		} vlan;
+		struct {				/* FLOW_ACTION_VLAN_PUSH_ETH */
+			unsigned char dst[ETH_ALEN];
+			unsigned char src[ETH_ALEN];
+		} vlan_push_eth;
+		struct {				/* FLOW_ACTION_MANGLE */
+							/* FLOW_ACTION_ADD */
+			enum flow_action_mangle_base htype;
+			u32		offset;
+			u32		mask;
+			u32		val;
+		} mangle;
+		struct ip_tunnel_info	*tunnel;	/* FLOW_ACTION_TUNNEL_ENCAP */
+		u32			csum_flags;	/* FLOW_ACTION_CSUM */
+		u32			mark;		/* FLOW_ACTION_MARK */
+		u16                     ptype;          /* FLOW_ACTION_PTYPE */
+		u16			rx_queue;	/* FLOW_ACTION_RX_QUEUE_MAPPING */
+		u32			priority;	/* FLOW_ACTION_PRIORITY */
+		struct {				/* FLOW_ACTION_QUEUE */
+			u32		ctx;
+			u32		index;
+			u8		vf;
+		} queue;
+		struct {				/* FLOW_ACTION_SAMPLE */
+			struct psample_group	*psample_group;
+			u32			rate;
+			u32			trunc_size;
+			bool			truncate;
+		} sample;
+		struct {				/* FLOW_ACTION_POLICE */
+			u32			burst;
+			u64			rate_bytes_ps;
+			u64			peakrate_bytes_ps;
+			u32			avrate;
+			u16			overhead;
+			u64			burst_pkt;
+			u64			rate_pkt_ps;
+			u32			mtu;
+			struct {
+				enum flow_action_id	act_id;
+				u32			extval;
+			} exceed, notexceed;
+		} police;
+		struct {				/* FLOW_ACTION_CT */
+			int action;
+			u16 zone;
+			struct nf_flowtable *flow_table;
+		} ct;
+		struct {
+			unsigned long cookie;
+			u32 mark;
+			u32 labels[4];
+			bool orig_dir;
+		} ct_metadata;
+		struct {				/* FLOW_ACTION_MPLS_PUSH */
+			u32		label;
+			__be16		proto;
+			u8		tc;
+			u8		bos;
+			u8		ttl;
+		} mpls_push;
+		struct {				/* FLOW_ACTION_MPLS_POP */
+			__be16		proto;
+		} mpls_pop;
+		struct {				/* FLOW_ACTION_MPLS_MANGLE */
+			u32		label;
+			u8		tc;
+			u8		bos;
+			u8		ttl;
+		} mpls_mangle;
+		struct {
+			s32		prio;
+			u64		basetime;
+			u64		cycletime;
+			u64		cycletimeext;
+			u32		num_entries;
+			struct action_gate_entry *entries;
+		} gate;
+		struct {				/* FLOW_ACTION_PPPOE_PUSH */
+			u16		sid;
+		} pppoe;
+	};
+	struct flow_action_cookie *user_cookie; /* user defined action cookie */
+};
+
+struct flow_action {
+	unsigned int			num_entries;
+	struct flow_action_entry	entries[];
+};
+
+static inline bool flow_action_has_entries(const struct flow_action *action)
+{
+	return action->num_entries;
+}
+
+/**
+ * flow_offload_has_one_action() - check if exactly one action is present
+ * @action: tc filter flow offload action
+ *
+ * Returns true if exactly one action is present.
+ */
+static inline bool flow_offload_has_one_action(const struct flow_action *action)
+{
+	return action->num_entries == 1;
+}
+
+static inline bool flow_action_is_last_entry(const struct flow_action *action,
+					     const struct flow_action_entry *entry)
+{
+	return entry == &action->entries[action->num_entries - 1];
+}
+
+#define flow_action_for_each(__i, __act, __actions)			\
+        for (__i = 0, __act = &(__actions)->entries[0];			\
+	     __i < (__actions)->num_entries;				\
+	     __act = &(__actions)->entries[++__i])
+
+static inline bool
+flow_action_mixed_hw_stats_check(const struct flow_action *action,
+				 struct netlink_ext_ack *extack)
+{
+	const struct flow_action_entry *action_entry;
+	u8 last_hw_stats;
+	int i;
+
+	if (flow_offload_has_one_action(action))
+		return true;
+
+	flow_action_for_each(i, action_entry, action) {
+		if (i && action_entry->hw_stats != last_hw_stats) {
+			NL_SET_ERR_MSG_MOD(extack, "Mixing HW stats types for actions is not supported");
+			return false;
+		}
+		last_hw_stats = action_entry->hw_stats;
+	}
+	return true;
+}
+
+static inline const struct flow_action_entry *
+flow_action_first_entry_get(const struct flow_action *action)
+{
+	WARN_ON(!flow_action_has_entries(action));
+	return &action->entries[0];
+}
+
+static inline bool
+__flow_action_hw_stats_check(const struct flow_action *action,
+			     struct netlink_ext_ack *extack,
+			     bool check_allow_bit,
+			     enum flow_action_hw_stats_bit allow_bit)
+{
+	const struct flow_action_entry *action_entry;
+
+	if (!flow_action_has_entries(action))
+		return true;
+	if (!flow_action_mixed_hw_stats_check(action, extack))
+		return false;
+
+	action_entry = flow_action_first_entry_get(action);
+
+	/* Zero is not a legal value for hw_stats, catch anyone passing it */
+	WARN_ON_ONCE(!action_entry->hw_stats);
+
+	if (!check_allow_bit &&
+	    ~action_entry->hw_stats & FLOW_ACTION_HW_STATS_ANY) {
+		NL_SET_ERR_MSG_MOD(extack, "Driver supports only default HW stats type \"any\"");
+		return false;
+	} else if (check_allow_bit &&
+		   !(action_entry->hw_stats & BIT(allow_bit))) {
+		NL_SET_ERR_MSG_MOD(extack, "Driver does not support selected HW stats type");
+		return false;
+	}
+	return true;
+}
+
+static inline bool
+flow_action_hw_stats_check(const struct flow_action *action,
+			   struct netlink_ext_ack *extack,
+			   enum flow_action_hw_stats_bit allow_bit)
+{
+	return __flow_action_hw_stats_check(action, extack, true, allow_bit);
+}
+
+static inline bool
+flow_action_basic_hw_stats_check(const struct flow_action *action,
+				 struct netlink_ext_ack *extack)
+{
+	return __flow_action_hw_stats_check(action, extack, false, 0);
+}
+
+struct flow_rule {
+	struct flow_match	match;
+	struct flow_action	action;
+};
+
+struct flow_rule *flow_rule_alloc(unsigned int num_actions);
+
+static inline bool flow_rule_match_key(const struct flow_rule *rule,
+				       enum flow_dissector_key_id key)
+{
+	return dissector_uses_key(rule->match.dissector, key);
+}
+
+struct flow_stats {
+	u64	pkts;
+	u64	bytes;
+	u64	drops;
+	u64	lastused;
+	enum flow_action_hw_stats used_hw_stats;
+	bool used_hw_stats_valid;
+};
+
+static inline void flow_stats_update(struct flow_stats *flow_stats,
+				     u64 bytes, u64 pkts,
+				     u64 drops, u64 lastused,
+				     enum flow_action_hw_stats used_hw_stats)
+{
+	flow_stats->pkts	+= pkts;
+	flow_stats->bytes	+= bytes;
+	flow_stats->drops	+= drops;
+	flow_stats->lastused	= max_t(u64, flow_stats->lastused, lastused);
+
+	/* The driver should pass value with a maximum of one bit set.
+	 * Passing FLOW_ACTION_HW_STATS_ANY is invalid.
+	 */
+	WARN_ON(used_hw_stats == FLOW_ACTION_HW_STATS_ANY);
+	flow_stats->used_hw_stats |= used_hw_stats;
+	flow_stats->used_hw_stats_valid = true;
+}
+
+enum flow_block_command {
+	FLOW_BLOCK_BIND,
+	FLOW_BLOCK_UNBIND,
+};
+
+enum flow_block_binder_type {
+	FLOW_BLOCK_BINDER_TYPE_UNSPEC,
+	FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
+	FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
+	FLOW_BLOCK_BINDER_TYPE_RED_EARLY_DROP,
+	FLOW_BLOCK_BINDER_TYPE_RED_MARK,
+};
+
+struct flow_block {
+	struct list_head cb_list;
+};
+
+struct netlink_ext_ack;
+
+struct flow_block_offload {
+	enum flow_block_command command;
+	enum flow_block_binder_type binder_type;
+	bool block_shared;
+	bool unlocked_driver_cb;
+	struct net *net;
+	struct flow_block *block;
+	struct list_head cb_list;
+	struct list_head *driver_block_list;
+	struct netlink_ext_ack *extack;
+	struct Qdisc *sch;
+	struct list_head *cb_list_head;
+};
+
+enum tc_setup_type;
+typedef int flow_setup_cb_t(enum tc_setup_type type, void *type_data,
+			    void *cb_priv);
+
+struct flow_block_cb;
+
+struct flow_block_indr {
+	struct list_head		list;
+	struct net_device		*dev;
+	struct Qdisc			*sch;
+	enum flow_block_binder_type	binder_type;
+	void				*data;
+	void				*cb_priv;
+	void				(*cleanup)(struct flow_block_cb *block_cb);
+};
+
+struct flow_block_cb {
+	struct list_head	driver_list;
+	struct list_head	list;
+	flow_setup_cb_t		*cb;
+	void			*cb_ident;
+	void			*cb_priv;
+	void			(*release)(void *cb_priv);
+	struct flow_block_indr	indr;
+	unsigned int		refcnt;
+};
+
+struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb,
+					  void *cb_ident, void *cb_priv,
+					  void (*release)(void *cb_priv));
+struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb,
+					       void *cb_ident, void *cb_priv,
+					       void (*release)(void *cb_priv),
+					       struct flow_block_offload *bo,
+					       struct net_device *dev,
+					       struct Qdisc *sch, void *data,
+					       void *indr_cb_priv,
+					       void (*cleanup)(struct flow_block_cb *block_cb));
+void flow_block_cb_free(struct flow_block_cb *block_cb);
+
+struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block,
+					   flow_setup_cb_t *cb, void *cb_ident);
+
+void *flow_block_cb_priv(struct flow_block_cb *block_cb);
+void flow_block_cb_incref(struct flow_block_cb *block_cb);
+unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
+
+static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
+				     struct flow_block_offload *offload)
+{
+	list_add_tail(&block_cb->list, &offload->cb_list);
+}
+
+static inline void flow_block_cb_remove(struct flow_block_cb *block_cb,
+					struct flow_block_offload *offload)
+{
+	list_move(&block_cb->list, &offload->cb_list);
+}
+
+static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb,
+					     struct flow_block_offload *offload)
+{
+	list_del(&block_cb->indr.list);
+	list_move(&block_cb->list, &offload->cb_list);
+}
+
+bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident,
+			   struct list_head *driver_block_list);
+
+int flow_block_cb_setup_simple(struct flow_block_offload *f,
+			       struct list_head *driver_list,
+			       flow_setup_cb_t *cb,
+			       void *cb_ident, void *cb_priv, bool ingress_only);
+
+enum flow_cls_command {
+	FLOW_CLS_REPLACE,
+	FLOW_CLS_DESTROY,
+	FLOW_CLS_STATS,
+	FLOW_CLS_TMPLT_CREATE,
+	FLOW_CLS_TMPLT_DESTROY,
+};
+
+struct flow_cls_common_offload {
+	u32 chain_index;
+	__be16 protocol;
+	u32 prio;
+	struct netlink_ext_ack *extack;
+};
+
+struct flow_cls_offload {
+	struct flow_cls_common_offload common;
+	enum flow_cls_command command;
+	bool use_act_stats;
+	unsigned long cookie;
+	struct flow_rule *rule;
+	struct flow_stats stats;
+	u32 classid;
+};
+
+enum offload_act_command  {
+	FLOW_ACT_REPLACE,
+	FLOW_ACT_DESTROY,
+	FLOW_ACT_STATS,
+};
+
+struct flow_offload_action {
+	struct netlink_ext_ack *extack; /* NULL in FLOW_ACT_STATS process*/
+	enum offload_act_command  command;
+	enum flow_action_id id;
+	u32 index;
+	unsigned long cookie;
+	struct flow_stats stats;
+	struct flow_action action;
+};
+
+struct flow_offload_action *offload_action_alloc(unsigned int num_actions);
+
+static inline struct flow_rule *
+flow_cls_offload_flow_rule(struct flow_cls_offload *flow_cmd)
+{
+	return flow_cmd->rule;
+}
+
+static inline void flow_block_init(struct flow_block *flow_block)
+{
+	INIT_LIST_HEAD(&flow_block->cb_list);
+}
+
+typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv,
+				      enum tc_setup_type type, void *type_data,
+				      void *data,
+				      void (*cleanup)(struct flow_block_cb *block_cb));
+
+int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);
+void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv,
+			      void (*release)(void *cb_priv));
+int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch,
+				enum tc_setup_type type, void *data,
+				struct flow_block_offload *bo,
+				void (*cleanup)(struct flow_block_cb *block_cb));
+bool flow_indr_dev_exists(void);
+
+#endif /* _NET_FLOW_OFFLOAD_H */