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, 927 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_acl.c b/drivers/net/ethernet/marvell/prestera/prestera_acl.c
new file mode 100644
index 000000000..cba89fda5
--- /dev/null
+++ b/drivers/net/ethernet/marvell/prestera/prestera_acl.c
@@ -0,0 +1,927 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2020-2021 Marvell International Ltd. All rights reserved */
+
+#include <linux/rhashtable.h>
+
+#include "prestera_acl.h"
+#include "prestera_flow.h"
+#include "prestera_hw.h"
+#include "prestera.h"
+
+#define ACL_KEYMASK_SIZE	\
+	(sizeof(__be32) * __PRESTERA_ACL_RULE_MATCH_TYPE_MAX)
+
+struct prestera_acl {
+	struct prestera_switch *sw;
+	struct list_head vtcam_list;
+	struct list_head rules;
+	struct rhashtable ruleset_ht;
+	struct rhashtable acl_rule_entry_ht;
+	struct idr uid;
+};
+
+struct prestera_acl_ruleset_ht_key {
+	struct prestera_flow_block *block;
+	u32 chain_index;
+};
+
+struct prestera_acl_rule_entry {
+	struct rhash_head ht_node;
+	struct prestera_acl_rule_entry_key key;
+	u32 hw_id;
+	u32 vtcam_id;
+	struct {
+		struct {
+			u8 valid:1;
+		} accept, drop, trap;
+		struct {
+			u8 valid:1;
+			struct prestera_acl_action_police i;
+		} police;
+		struct {
+			struct prestera_acl_action_jump i;
+			u8 valid:1;
+		} jump;
+		struct {
+			u32 id;
+			struct prestera_counter_block *block;
+		} counter;
+	};
+};
+
+struct prestera_acl_ruleset {
+	struct rhash_head ht_node; /* Member of acl HT */
+	struct prestera_acl_ruleset_ht_key ht_key;
+	struct rhashtable rule_ht;
+	struct prestera_acl *acl;
+	struct {
+		u32 min;
+		u32 max;
+	} prio;
+	unsigned long rule_count;
+	refcount_t refcount;
+	void *keymask;
+	u32 vtcam_id;
+	u32 index;
+	u16 pcl_id;
+	bool offload;
+	bool ingress;
+};
+
+struct prestera_acl_vtcam {
+	struct list_head list;
+	__be32 keymask[__PRESTERA_ACL_RULE_MATCH_TYPE_MAX];
+	refcount_t refcount;
+	u32 id;
+	bool is_keymask_set;
+	u8 lookup;
+	u8 direction;
+};
+
+static const struct rhashtable_params prestera_acl_ruleset_ht_params = {
+	.key_len = sizeof(struct prestera_acl_ruleset_ht_key),
+	.key_offset = offsetof(struct prestera_acl_ruleset, ht_key),
+	.head_offset = offsetof(struct prestera_acl_ruleset, ht_node),
+	.automatic_shrinking = true,
+};
+
+static const struct rhashtable_params prestera_acl_rule_ht_params = {
+	.key_len = sizeof(unsigned long),
+	.key_offset = offsetof(struct prestera_acl_rule, cookie),
+	.head_offset = offsetof(struct prestera_acl_rule, ht_node),
+	.automatic_shrinking = true,
+};
+
+static const struct rhashtable_params __prestera_acl_rule_entry_ht_params = {
+	.key_offset  = offsetof(struct prestera_acl_rule_entry, key),
+	.head_offset = offsetof(struct prestera_acl_rule_entry, ht_node),
+	.key_len     = sizeof(struct prestera_acl_rule_entry_key),
+	.automatic_shrinking = true,
+};
+
+int prestera_acl_chain_to_client(u32 chain_index, bool ingress, u32 *client)
+{
+	static const u32 ingress_client_map[] = {
+		PRESTERA_HW_COUNTER_CLIENT_INGRESS_LOOKUP_0,
+		PRESTERA_HW_COUNTER_CLIENT_INGRESS_LOOKUP_1,
+		PRESTERA_HW_COUNTER_CLIENT_INGRESS_LOOKUP_2
+	};
+
+	if (!ingress) {
+		/* prestera supports only one chain on egress */
+		if (chain_index > 0)
+			return -EINVAL;
+
+		*client = PRESTERA_HW_COUNTER_CLIENT_EGRESS_LOOKUP;
+		return 0;
+	}
+
+	if (chain_index >= ARRAY_SIZE(ingress_client_map))
+		return -EINVAL;
+
+	*client = ingress_client_map[chain_index];
+	return 0;
+}
+
+static bool prestera_acl_chain_is_supported(u32 chain_index, bool ingress)
+{
+	if (!ingress)
+		/* prestera supports only one chain on egress */
+		return chain_index == 0;
+
+	return (chain_index & ~PRESTERA_ACL_CHAIN_MASK) == 0;
+}
+
+static struct prestera_acl_ruleset *
+prestera_acl_ruleset_create(struct prestera_acl *acl,
+			    struct prestera_flow_block *block,
+			    u32 chain_index)
+{
+	struct prestera_acl_ruleset *ruleset;
+	u32 uid = 0;
+	int err;
+
+	if (!prestera_acl_chain_is_supported(chain_index, block->ingress))
+		return ERR_PTR(-EINVAL);
+
+	ruleset = kzalloc(sizeof(*ruleset), GFP_KERNEL);
+	if (!ruleset)
+		return ERR_PTR(-ENOMEM);
+
+	ruleset->acl = acl;
+	ruleset->ingress = block->ingress;
+	ruleset->ht_key.block = block;
+	ruleset->ht_key.chain_index = chain_index;
+	refcount_set(&ruleset->refcount, 1);
+
+	err = rhashtable_init(&ruleset->rule_ht, &prestera_acl_rule_ht_params);
+	if (err)
+		goto err_rhashtable_init;
+
+	err = idr_alloc_u32(&acl->uid, NULL, &uid, U8_MAX, GFP_KERNEL);
+	if (err)
+		goto err_ruleset_create;
+
+	/* make pcl-id based on uid */
+	ruleset->pcl_id = PRESTERA_ACL_PCL_ID_MAKE((u8)uid, chain_index);
+	ruleset->index = uid;
+
+	ruleset->prio.min = UINT_MAX;
+	ruleset->prio.max = 0;
+
+	err = rhashtable_insert_fast(&acl->ruleset_ht, &ruleset->ht_node,
+				     prestera_acl_ruleset_ht_params);
+	if (err)
+		goto err_ruleset_ht_insert;
+
+	return ruleset;
+
+err_ruleset_ht_insert:
+	idr_remove(&acl->uid, uid);
+err_ruleset_create:
+	rhashtable_destroy(&ruleset->rule_ht);
+err_rhashtable_init:
+	kfree(ruleset);
+	return ERR_PTR(err);
+}
+
+int prestera_acl_ruleset_keymask_set(struct prestera_acl_ruleset *ruleset,
+				     void *keymask)
+{
+	ruleset->keymask = kmemdup(keymask, ACL_KEYMASK_SIZE, GFP_KERNEL);
+	if (!ruleset->keymask)
+		return -ENOMEM;
+
+	return 0;
+}
+
+int prestera_acl_ruleset_offload(struct prestera_acl_ruleset *ruleset)
+{
+	struct prestera_acl_iface iface;
+	u32 vtcam_id;
+	int dir;
+	int err;
+
+	dir = ruleset->ingress ?
+		PRESTERA_HW_VTCAM_DIR_INGRESS : PRESTERA_HW_VTCAM_DIR_EGRESS;
+
+	if (ruleset->offload)
+		return -EEXIST;
+
+	err = prestera_acl_vtcam_id_get(ruleset->acl,
+					ruleset->ht_key.chain_index,
+					dir,
+					ruleset->keymask, &vtcam_id);
+	if (err)
+		goto err_vtcam_create;
+
+	if (ruleset->ht_key.chain_index) {
+		/* for chain > 0, bind iface index to pcl-id to be able
+		 * to jump from any other ruleset to this one using the index.
+		 */
+		iface.index = ruleset->index;
+		iface.type = PRESTERA_ACL_IFACE_TYPE_INDEX;
+		err = prestera_hw_vtcam_iface_bind(ruleset->acl->sw, &iface,
+						   vtcam_id, ruleset->pcl_id);
+		if (err)
+			goto err_ruleset_bind;
+	}
+
+	ruleset->vtcam_id = vtcam_id;
+	ruleset->offload = true;
+	return 0;
+
+err_ruleset_bind:
+	prestera_acl_vtcam_id_put(ruleset->acl, ruleset->vtcam_id);
+err_vtcam_create:
+	return err;
+}
+
+static void prestera_acl_ruleset_destroy(struct prestera_acl_ruleset *ruleset)
+{
+	struct prestera_acl *acl = ruleset->acl;
+	u8 uid = ruleset->pcl_id & PRESTERA_ACL_KEYMASK_PCL_ID_USER;
+	int err;
+
+	rhashtable_remove_fast(&acl->ruleset_ht, &ruleset->ht_node,
+			       prestera_acl_ruleset_ht_params);
+
+	if (ruleset->offload) {
+		if (ruleset->ht_key.chain_index) {
+			struct prestera_acl_iface iface = {
+				.type = PRESTERA_ACL_IFACE_TYPE_INDEX,
+				.index = ruleset->index
+			};
+			err = prestera_hw_vtcam_iface_unbind(acl->sw, &iface,
+							     ruleset->vtcam_id);
+			WARN_ON(err);
+		}
+		WARN_ON(prestera_acl_vtcam_id_put(acl, ruleset->vtcam_id));
+	}
+
+	idr_remove(&acl->uid, uid);
+	rhashtable_destroy(&ruleset->rule_ht);
+	kfree(ruleset->keymask);
+	kfree(ruleset);
+}
+
+static struct prestera_acl_ruleset *
+__prestera_acl_ruleset_lookup(struct prestera_acl *acl,
+			      struct prestera_flow_block *block,
+			      u32 chain_index)
+{
+	struct prestera_acl_ruleset_ht_key ht_key;
+
+	memset(&ht_key, 0, sizeof(ht_key));
+	ht_key.block = block;
+	ht_key.chain_index = chain_index;
+	return rhashtable_lookup_fast(&acl->ruleset_ht, &ht_key,
+				      prestera_acl_ruleset_ht_params);
+}
+
+struct prestera_acl_ruleset *
+prestera_acl_ruleset_lookup(struct prestera_acl *acl,
+			    struct prestera_flow_block *block,
+			    u32 chain_index)
+{
+	struct prestera_acl_ruleset *ruleset;
+
+	ruleset = __prestera_acl_ruleset_lookup(acl, block, chain_index);
+	if (!ruleset)
+		return ERR_PTR(-ENOENT);
+
+	refcount_inc(&ruleset->refcount);
+	return ruleset;
+}
+
+struct prestera_acl_ruleset *
+prestera_acl_ruleset_get(struct prestera_acl *acl,
+			 struct prestera_flow_block *block,
+			 u32 chain_index)
+{
+	struct prestera_acl_ruleset *ruleset;
+
+	ruleset = __prestera_acl_ruleset_lookup(acl, block, chain_index);
+	if (ruleset) {
+		refcount_inc(&ruleset->refcount);
+		return ruleset;
+	}
+
+	return prestera_acl_ruleset_create(acl, block, chain_index);
+}
+
+void prestera_acl_ruleset_put(struct prestera_acl_ruleset *ruleset)
+{
+	if (!refcount_dec_and_test(&ruleset->refcount))
+		return;
+
+	prestera_acl_ruleset_destroy(ruleset);
+}
+
+int prestera_acl_ruleset_bind(struct prestera_acl_ruleset *ruleset,
+			      struct prestera_port *port)
+{
+	struct prestera_acl_iface iface = {
+		.type = PRESTERA_ACL_IFACE_TYPE_PORT,
+		.port = port
+	};
+
+	return prestera_hw_vtcam_iface_bind(port->sw, &iface, ruleset->vtcam_id,
+					    ruleset->pcl_id);
+}
+
+int prestera_acl_ruleset_unbind(struct prestera_acl_ruleset *ruleset,
+				struct prestera_port *port)
+{
+	struct prestera_acl_iface iface = {
+		.type = PRESTERA_ACL_IFACE_TYPE_PORT,
+		.port = port
+	};
+
+	return prestera_hw_vtcam_iface_unbind(port->sw, &iface,
+					      ruleset->vtcam_id);
+}
+
+static int prestera_acl_ruleset_block_bind(struct prestera_acl_ruleset *ruleset,
+					   struct prestera_flow_block *block)
+{
+	struct prestera_flow_block_binding *binding;
+	int err;
+
+	block->ruleset_zero = ruleset;
+	list_for_each_entry(binding, &block->binding_list, list) {
+		err = prestera_acl_ruleset_bind(ruleset, binding->port);
+		if (err)
+			goto rollback;
+	}
+	return 0;
+
+rollback:
+	list_for_each_entry_continue_reverse(binding, &block->binding_list,
+					     list)
+		err = prestera_acl_ruleset_unbind(ruleset, binding->port);
+	block->ruleset_zero = NULL;
+
+	return err;
+}
+
+static void
+prestera_acl_ruleset_block_unbind(struct prestera_acl_ruleset *ruleset,
+				  struct prestera_flow_block *block)
+{
+	struct prestera_flow_block_binding *binding;
+
+	list_for_each_entry(binding, &block->binding_list, list)
+		prestera_acl_ruleset_unbind(ruleset, binding->port);
+	block->ruleset_zero = NULL;
+}
+
+static void
+prestera_acl_ruleset_prio_refresh(struct prestera_acl *acl,
+				  struct prestera_acl_ruleset *ruleset)
+{
+	struct prestera_acl_rule *rule;
+
+	ruleset->prio.min = UINT_MAX;
+	ruleset->prio.max = 0;
+
+	list_for_each_entry(rule, &acl->rules, list) {
+		if (ruleset->ingress != rule->ruleset->ingress)
+			continue;
+		if (ruleset->ht_key.chain_index != rule->chain_index)
+			continue;
+
+		ruleset->prio.min = min(ruleset->prio.min, rule->priority);
+		ruleset->prio.max = max(ruleset->prio.max, rule->priority);
+	}
+}
+
+void
+prestera_acl_rule_keymask_pcl_id_set(struct prestera_acl_rule *rule, u16 pcl_id)
+{
+	struct prestera_acl_match *r_match = &rule->re_key.match;
+	__be16 pcl_id_mask = htons(PRESTERA_ACL_KEYMASK_PCL_ID);
+	__be16 pcl_id_key = htons(pcl_id);
+
+	rule_match_set(r_match->key, PCL_ID, pcl_id_key);
+	rule_match_set(r_match->mask, PCL_ID, pcl_id_mask);
+}
+
+struct prestera_acl_rule *
+prestera_acl_rule_lookup(struct prestera_acl_ruleset *ruleset,
+			 unsigned long cookie)
+{
+	return rhashtable_lookup_fast(&ruleset->rule_ht, &cookie,
+				      prestera_acl_rule_ht_params);
+}
+
+u32 prestera_acl_ruleset_index_get(const struct prestera_acl_ruleset *ruleset)
+{
+	return ruleset->index;
+}
+
+void prestera_acl_ruleset_prio_get(struct prestera_acl_ruleset *ruleset,
+				   u32 *prio_min, u32 *prio_max)
+{
+	*prio_min = ruleset->prio.min;
+	*prio_max = ruleset->prio.max;
+}
+
+bool prestera_acl_ruleset_is_offload(struct prestera_acl_ruleset *ruleset)
+{
+	return ruleset->offload;
+}
+
+struct prestera_acl_rule *
+prestera_acl_rule_create(struct prestera_acl_ruleset *ruleset,
+			 unsigned long cookie, u32 chain_index)
+{
+	struct prestera_acl_rule *rule;
+
+	rule = kzalloc(sizeof(*rule), GFP_KERNEL);
+	if (!rule)
+		return ERR_PTR(-ENOMEM);
+
+	rule->ruleset = ruleset;
+	rule->cookie = cookie;
+	rule->chain_index = chain_index;
+
+	refcount_inc(&ruleset->refcount);
+
+	return rule;
+}
+
+void prestera_acl_rule_priority_set(struct prestera_acl_rule *rule,
+				    u32 priority)
+{
+	rule->priority = priority;
+}
+
+void prestera_acl_rule_destroy(struct prestera_acl_rule *rule)
+{
+	if (rule->jump_ruleset)
+		/* release ruleset kept by jump action */
+		prestera_acl_ruleset_put(rule->jump_ruleset);
+
+	prestera_acl_ruleset_put(rule->ruleset);
+	kfree(rule);
+}
+
+static void prestera_acl_ruleset_prio_update(struct prestera_acl_ruleset *ruleset,
+					     u32 prio)
+{
+	ruleset->prio.min = min(ruleset->prio.min, prio);
+	ruleset->prio.max = max(ruleset->prio.max, prio);
+}
+
+int prestera_acl_rule_add(struct prestera_switch *sw,
+			  struct prestera_acl_rule *rule)
+{
+	int err;
+	struct prestera_acl_ruleset *ruleset = rule->ruleset;
+	struct prestera_flow_block *block = ruleset->ht_key.block;
+
+	/* try to add rule to hash table first */
+	err = rhashtable_insert_fast(&ruleset->rule_ht, &rule->ht_node,
+				     prestera_acl_rule_ht_params);
+	if (err)
+		goto err_ht_insert;
+
+	prestera_acl_rule_keymask_pcl_id_set(rule, ruleset->pcl_id);
+	rule->re_arg.vtcam_id = ruleset->vtcam_id;
+	rule->re_key.prio = rule->priority;
+
+	rule->re = prestera_acl_rule_entry_find(sw->acl, &rule->re_key);
+	err = WARN_ON(rule->re) ? -EEXIST : 0;
+	if (err)
+		goto err_rule_add;
+
+	rule->re = prestera_acl_rule_entry_create(sw->acl, &rule->re_key,
+						  &rule->re_arg);
+	err = !rule->re ? -EINVAL : 0;
+	if (err)
+		goto err_rule_add;
+
+	/* bind the block (all ports) to chain index 0, rest of
+	 * the chains are bound to goto action
+	 */
+	if (!ruleset->ht_key.chain_index && !ruleset->rule_count) {
+		err = prestera_acl_ruleset_block_bind(ruleset, block);
+		if (err)
+			goto err_acl_block_bind;
+	}
+
+	list_add_tail(&rule->list, &sw->acl->rules);
+	ruleset->rule_count++;
+	prestera_acl_ruleset_prio_update(ruleset, rule->priority);
+	return 0;
+
+err_acl_block_bind:
+	prestera_acl_rule_entry_destroy(sw->acl, rule->re);
+err_rule_add:
+	rule->re = NULL;
+	rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
+			       prestera_acl_rule_ht_params);
+err_ht_insert:
+	return err;
+}
+
+void prestera_acl_rule_del(struct prestera_switch *sw,
+			   struct prestera_acl_rule *rule)
+{
+	struct prestera_acl_ruleset *ruleset = rule->ruleset;
+	struct prestera_flow_block *block = ruleset->ht_key.block;
+
+	rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
+			       prestera_acl_rule_ht_params);
+	ruleset->rule_count--;
+	list_del(&rule->list);
+
+	prestera_acl_rule_entry_destroy(sw->acl, rule->re);
+	prestera_acl_ruleset_prio_refresh(sw->acl, ruleset);
+
+	/* unbind block (all ports) */
+	if (!ruleset->ht_key.chain_index && !ruleset->rule_count)
+		prestera_acl_ruleset_block_unbind(ruleset, block);
+}
+
+int prestera_acl_rule_get_stats(struct prestera_acl *acl,
+				struct prestera_acl_rule *rule,
+				u64 *packets, u64 *bytes, u64 *last_use)
+{
+	u64 current_packets;
+	u64 current_bytes;
+	int err;
+
+	err = prestera_counter_stats_get(acl->sw->counter,
+					 rule->re->counter.block,
+					 rule->re->counter.id,
+					 &current_packets, &current_bytes);
+	if (err)
+		return err;
+
+	*packets = current_packets;
+	*bytes = current_bytes;
+	*last_use = jiffies;
+
+	return 0;
+}
+
+struct prestera_acl_rule_entry *
+prestera_acl_rule_entry_find(struct prestera_acl *acl,
+			     struct prestera_acl_rule_entry_key *key)
+{
+	return rhashtable_lookup_fast(&acl->acl_rule_entry_ht, key,
+				      __prestera_acl_rule_entry_ht_params);
+}
+
+static int __prestera_acl_rule_entry2hw_del(struct prestera_switch *sw,
+					    struct prestera_acl_rule_entry *e)
+{
+	return prestera_hw_vtcam_rule_del(sw, e->vtcam_id, e->hw_id);
+}
+
+static int __prestera_acl_rule_entry2hw_add(struct prestera_switch *sw,
+					    struct prestera_acl_rule_entry *e)
+{
+	struct prestera_acl_hw_action_info act_hw[PRESTERA_ACL_RULE_ACTION_MAX];
+	int act_num;
+
+	memset(&act_hw, 0, sizeof(act_hw));
+	act_num = 0;
+
+	/* accept */
+	if (e->accept.valid) {
+		act_hw[act_num].id = PRESTERA_ACL_RULE_ACTION_ACCEPT;
+		act_num++;
+	}
+	/* drop */
+	if (e->drop.valid) {
+		act_hw[act_num].id = PRESTERA_ACL_RULE_ACTION_DROP;
+		act_num++;
+	}
+	/* trap */
+	if (e->trap.valid) {
+		act_hw[act_num].id = PRESTERA_ACL_RULE_ACTION_TRAP;
+		act_num++;
+	}
+	/* police */
+	if (e->police.valid) {
+		act_hw[act_num].id = PRESTERA_ACL_RULE_ACTION_POLICE;
+		act_hw[act_num].police = e->police.i;
+		act_num++;
+	}
+	/* jump */
+	if (e->jump.valid) {
+		act_hw[act_num].id = PRESTERA_ACL_RULE_ACTION_JUMP;
+		act_hw[act_num].jump = e->jump.i;
+		act_num++;
+	}
+	/* counter */
+	if (e->counter.block) {
+		act_hw[act_num].id = PRESTERA_ACL_RULE_ACTION_COUNT;
+		act_hw[act_num].count.id = e->counter.id;
+		act_num++;
+	}
+
+	return prestera_hw_vtcam_rule_add(sw, e->vtcam_id, e->key.prio,
+					  e->key.match.key, e->key.match.mask,
+					  act_hw, act_num, &e->hw_id);
+}
+
+static void
+__prestera_acl_rule_entry_act_destruct(struct prestera_switch *sw,
+				       struct prestera_acl_rule_entry *e)
+{
+	/* counter */
+	prestera_counter_put(sw->counter, e->counter.block, e->counter.id);
+	/* police */
+	if (e->police.valid)
+		prestera_hw_policer_release(sw, e->police.i.id);
+}
+
+void prestera_acl_rule_entry_destroy(struct prestera_acl *acl,
+				     struct prestera_acl_rule_entry *e)
+{
+	int ret;
+
+	rhashtable_remove_fast(&acl->acl_rule_entry_ht, &e->ht_node,
+			       __prestera_acl_rule_entry_ht_params);
+
+	ret = __prestera_acl_rule_entry2hw_del(acl->sw, e);
+	WARN_ON(ret && ret != -ENODEV);
+
+	__prestera_acl_rule_entry_act_destruct(acl->sw, e);
+	kfree(e);
+}
+
+static int
+__prestera_acl_rule_entry_act_construct(struct prestera_switch *sw,
+					struct prestera_acl_rule_entry *e,
+					struct prestera_acl_rule_entry_arg *arg)
+{
+	int err;
+
+	/* accept */
+	e->accept.valid = arg->accept.valid;
+	/* drop */
+	e->drop.valid = arg->drop.valid;
+	/* trap */
+	e->trap.valid = arg->trap.valid;
+	/* jump */
+	e->jump.valid = arg->jump.valid;
+	e->jump.i = arg->jump.i;
+	/* police */
+	if (arg->police.valid) {
+		u8 type = arg->police.ingress ? PRESTERA_POLICER_TYPE_INGRESS :
+						PRESTERA_POLICER_TYPE_EGRESS;
+
+		err = prestera_hw_policer_create(sw, type, &e->police.i.id);
+		if (err)
+			goto err_out;
+
+		err = prestera_hw_policer_sr_tcm_set(sw, e->police.i.id,
+						     arg->police.rate,
+						     arg->police.burst);
+		if (err) {
+			prestera_hw_policer_release(sw, e->police.i.id);
+			goto err_out;
+		}
+		e->police.valid = arg->police.valid;
+	}
+	/* counter */
+	if (arg->count.valid) {
+		err = prestera_counter_get(sw->counter, arg->count.client,
+					   &e->counter.block,
+					   &e->counter.id);
+		if (err)
+			goto err_out;
+	}
+
+	return 0;
+
+err_out:
+	__prestera_acl_rule_entry_act_destruct(sw, e);
+	return -EINVAL;
+}
+
+struct prestera_acl_rule_entry *
+prestera_acl_rule_entry_create(struct prestera_acl *acl,
+			       struct prestera_acl_rule_entry_key *key,
+			       struct prestera_acl_rule_entry_arg *arg)
+{
+	struct prestera_acl_rule_entry *e;
+	int err;
+
+	e = kzalloc(sizeof(*e), GFP_KERNEL);
+	if (!e)
+		goto err_kzalloc;
+
+	memcpy(&e->key, key, sizeof(*key));
+	e->vtcam_id = arg->vtcam_id;
+	err = __prestera_acl_rule_entry_act_construct(acl->sw, e, arg);
+	if (err)
+		goto err_act_construct;
+
+	err = __prestera_acl_rule_entry2hw_add(acl->sw, e);
+	if (err)
+		goto err_hw_add;
+
+	err = rhashtable_insert_fast(&acl->acl_rule_entry_ht, &e->ht_node,
+				     __prestera_acl_rule_entry_ht_params);
+	if (err)
+		goto err_ht_insert;
+
+	return e;
+
+err_ht_insert:
+	WARN_ON(__prestera_acl_rule_entry2hw_del(acl->sw, e));
+err_hw_add:
+	__prestera_acl_rule_entry_act_destruct(acl->sw, e);
+err_act_construct:
+	kfree(e);
+err_kzalloc:
+	return NULL;
+}
+
+static int __prestera_acl_vtcam_id_try_fit(struct prestera_acl *acl, u8 lookup,
+					   void *keymask, u32 *vtcam_id)
+{
+	struct prestera_acl_vtcam *vtcam;
+	int i;
+
+	list_for_each_entry(vtcam, &acl->vtcam_list, list) {
+		if (lookup != vtcam->lookup)
+			continue;
+
+		if (!keymask && !vtcam->is_keymask_set)
+			goto vtcam_found;
+
+		if (!(keymask && vtcam->is_keymask_set))
+			continue;
+
+		/* try to fit with vtcam keymask */
+		for (i = 0; i < __PRESTERA_ACL_RULE_MATCH_TYPE_MAX; i++) {
+			__be32 __keymask = ((__be32 *)keymask)[i];
+
+			if (!__keymask)
+				/* vtcam keymask in not interested */
+				continue;
+
+			if (__keymask & ~vtcam->keymask[i])
+				/* keymask does not fit the vtcam keymask */
+				break;
+		}
+
+		if (i == __PRESTERA_ACL_RULE_MATCH_TYPE_MAX)
+			/* keymask fits vtcam keymask, return it */
+			goto vtcam_found;
+	}
+
+	/* nothing is found */
+	return -ENOENT;
+
+vtcam_found:
+	refcount_inc(&vtcam->refcount);
+	*vtcam_id = vtcam->id;
+	return 0;
+}
+
+int prestera_acl_vtcam_id_get(struct prestera_acl *acl, u8 lookup, u8 dir,
+			      void *keymask, u32 *vtcam_id)
+{
+	struct prestera_acl_vtcam *vtcam;
+	u32 new_vtcam_id;
+	int err;
+
+	/* find the vtcam that suits keymask. We do not expect to have
+	 * a big number of vtcams, so, the list type for vtcam list is
+	 * fine for now
+	 */
+	list_for_each_entry(vtcam, &acl->vtcam_list, list) {
+		if (lookup != vtcam->lookup ||
+		    dir != vtcam->direction)
+			continue;
+
+		if (!keymask && !vtcam->is_keymask_set) {
+			refcount_inc(&vtcam->refcount);
+			goto vtcam_found;
+		}
+
+		if (keymask && vtcam->is_keymask_set &&
+		    !memcmp(keymask, vtcam->keymask, sizeof(vtcam->keymask))) {
+			refcount_inc(&vtcam->refcount);
+			goto vtcam_found;
+		}
+	}
+
+	/* vtcam not found, try to create new one */
+	vtcam = kzalloc(sizeof(*vtcam), GFP_KERNEL);
+	if (!vtcam)
+		return -ENOMEM;
+
+	err = prestera_hw_vtcam_create(acl->sw, lookup, keymask, &new_vtcam_id,
+				       dir);
+	if (err) {
+		kfree(vtcam);
+
+		/* cannot create new, try to fit into existing vtcam */
+		if (__prestera_acl_vtcam_id_try_fit(acl, lookup,
+						    keymask, &new_vtcam_id))
+			return err;
+
+		*vtcam_id = new_vtcam_id;
+		return 0;
+	}
+
+	vtcam->direction = dir;
+	vtcam->id = new_vtcam_id;
+	vtcam->lookup = lookup;
+	if (keymask) {
+		memcpy(vtcam->keymask, keymask, sizeof(vtcam->keymask));
+		vtcam->is_keymask_set = true;
+	}
+	refcount_set(&vtcam->refcount, 1);
+	list_add_rcu(&vtcam->list, &acl->vtcam_list);
+
+vtcam_found:
+	*vtcam_id = vtcam->id;
+	return 0;
+}
+
+int prestera_acl_vtcam_id_put(struct prestera_acl *acl, u32 vtcam_id)
+{
+	struct prestera_acl_vtcam *vtcam;
+	int err;
+
+	list_for_each_entry(vtcam, &acl->vtcam_list, list) {
+		if (vtcam_id != vtcam->id)
+			continue;
+
+		if (!refcount_dec_and_test(&vtcam->refcount))
+			return 0;
+
+		err = prestera_hw_vtcam_destroy(acl->sw, vtcam->id);
+		if (err && err != -ENODEV) {
+			refcount_set(&vtcam->refcount, 1);
+			return err;
+		}
+
+		list_del(&vtcam->list);
+		kfree(vtcam);
+		return 0;
+	}
+
+	return -ENOENT;
+}
+
+int prestera_acl_init(struct prestera_switch *sw)
+{
+	struct prestera_acl *acl;
+	int err;
+
+	acl = kzalloc(sizeof(*acl), GFP_KERNEL);
+	if (!acl)
+		return -ENOMEM;
+
+	acl->sw = sw;
+	INIT_LIST_HEAD(&acl->rules);
+	INIT_LIST_HEAD(&acl->vtcam_list);
+	idr_init(&acl->uid);
+
+	err = rhashtable_init(&acl->acl_rule_entry_ht,
+			      &__prestera_acl_rule_entry_ht_params);
+	if (err)
+		goto err_acl_rule_entry_ht_init;
+
+	err = rhashtable_init(&acl->ruleset_ht,
+			      &prestera_acl_ruleset_ht_params);
+	if (err)
+		goto err_ruleset_ht_init;
+
+	sw->acl = acl;
+
+	return 0;
+
+err_ruleset_ht_init:
+	rhashtable_destroy(&acl->acl_rule_entry_ht);
+err_acl_rule_entry_ht_init:
+	kfree(acl);
+	return err;
+}
+
+void prestera_acl_fini(struct prestera_switch *sw)
+{
+	struct prestera_acl *acl = sw->acl;
+
+	WARN_ON(!idr_is_empty(&acl->uid));
+	idr_destroy(&acl->uid);
+
+	WARN_ON(!list_empty(&acl->vtcam_list));
+	WARN_ON(!list_empty(&acl->rules));
+
+	rhashtable_destroy(&acl->ruleset_ht);
+	rhashtable_destroy(&acl->acl_rule_entry_ht);
+
+	kfree(acl);
+}