// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * drivers/net/ethernet/rocker/rocker_ofdpa.c - Rocker switch OF-DPA-like
 *					        implementation
 * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
 * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/hashtable.h>
#include <linux/crc32.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include <net/neighbour.h>
#include <net/switchdev.h>
#include <net/ip_fib.h>
#include <net/nexthop.h>
#include <net/arp.h>

#include "rocker.h"
#include "rocker_tlv.h"

struct ofdpa_flow_tbl_key {
	u32 priority;
	enum rocker_of_dpa_table_id tbl_id;
	union {
		struct {
			u32 in_pport;
			u32 in_pport_mask;
			enum rocker_of_dpa_table_id goto_tbl;
		} ig_port;
		struct {
			u32 in_pport;
			__be16 vlan_id;
			__be16 vlan_id_mask;
			enum rocker_of_dpa_table_id goto_tbl;
			bool untagged;
			__be16 new_vlan_id;
		} vlan;
		struct {
			u32 in_pport;
			u32 in_pport_mask;
			__be16 eth_type;
			u8 eth_dst[ETH_ALEN];
			u8 eth_dst_mask[ETH_ALEN];
			__be16 vlan_id;
			__be16 vlan_id_mask;
			enum rocker_of_dpa_table_id goto_tbl;
			bool copy_to_cpu;
		} term_mac;
		struct {
			__be16 eth_type;
			__be32 dst4;
			__be32 dst4_mask;
			enum rocker_of_dpa_table_id goto_tbl;
			u32 group_id;
		} ucast_routing;
		struct {
			u8 eth_dst[ETH_ALEN];
			u8 eth_dst_mask[ETH_ALEN];
			int has_eth_dst;
			int has_eth_dst_mask;
			__be16 vlan_id;
			u32 tunnel_id;
			enum rocker_of_dpa_table_id goto_tbl;
			u32 group_id;
			bool copy_to_cpu;
		} bridge;
		struct {
			u32 in_pport;
			u32 in_pport_mask;
			u8 eth_src[ETH_ALEN];
			u8 eth_src_mask[ETH_ALEN];
			u8 eth_dst[ETH_ALEN];
			u8 eth_dst_mask[ETH_ALEN];
			__be16 eth_type;
			__be16 vlan_id;
			__be16 vlan_id_mask;
			u8 ip_proto;
			u8 ip_proto_mask;
			u8 ip_tos;
			u8 ip_tos_mask;
			u32 group_id;
		} acl;
	};
};

struct ofdpa_flow_tbl_entry {
	struct hlist_node entry;
	u32 cmd;
	u64 cookie;
	struct ofdpa_flow_tbl_key key;
	size_t key_len;
	u32 key_crc32; /* key */
	struct fib_info *fi;
};

struct ofdpa_group_tbl_entry {
	struct hlist_node entry;
	u32 cmd;
	u32 group_id; /* key */
	u16 group_count;
	u32 *group_ids;
	union {
		struct {
			u8 pop_vlan;
		} l2_interface;
		struct {
			u8 eth_src[ETH_ALEN];
			u8 eth_dst[ETH_ALEN];
			__be16 vlan_id;
			u32 group_id;
		} l2_rewrite;
		struct {
			u8 eth_src[ETH_ALEN];
			u8 eth_dst[ETH_ALEN];
			__be16 vlan_id;
			bool ttl_check;
			u32 group_id;
		} l3_unicast;
	};
};

struct ofdpa_fdb_tbl_entry {
	struct hlist_node entry;
	u32 key_crc32; /* key */
	bool learned;
	unsigned long touched;
	struct ofdpa_fdb_tbl_key {
		struct ofdpa_port *ofdpa_port;
		u8 addr[ETH_ALEN];
		__be16 vlan_id;
	} key;
};

struct ofdpa_internal_vlan_tbl_entry {
	struct hlist_node entry;
	int ifindex; /* key */
	u32 ref_count;
	__be16 vlan_id;
};

struct ofdpa_neigh_tbl_entry {
	struct hlist_node entry;
	__be32 ip_addr; /* key */
	struct net_device *dev;
	u32 ref_count;
	u32 index;
	u8 eth_dst[ETH_ALEN];
	bool ttl_check;
};

enum {
	OFDPA_CTRL_LINK_LOCAL_MCAST,
	OFDPA_CTRL_LOCAL_ARP,
	OFDPA_CTRL_IPV4_MCAST,
	OFDPA_CTRL_IPV6_MCAST,
	OFDPA_CTRL_DFLT_BRIDGING,
	OFDPA_CTRL_DFLT_OVS,
	OFDPA_CTRL_MAX,
};

#define OFDPA_INTERNAL_VLAN_ID_BASE	0x0f00
#define OFDPA_N_INTERNAL_VLANS		255
#define OFDPA_VLAN_BITMAP_LEN		BITS_TO_LONGS(VLAN_N_VID)
#define OFDPA_INTERNAL_VLAN_BITMAP_LEN	BITS_TO_LONGS(OFDPA_N_INTERNAL_VLANS)
#define OFDPA_UNTAGGED_VID 0

struct ofdpa {
	struct rocker *rocker;
	DECLARE_HASHTABLE(flow_tbl, 16);
	spinlock_t flow_tbl_lock;		/* for flow tbl accesses */
	u64 flow_tbl_next_cookie;
	DECLARE_HASHTABLE(group_tbl, 16);
	spinlock_t group_tbl_lock;		/* for group tbl accesses */
	struct timer_list fdb_cleanup_timer;
	DECLARE_HASHTABLE(fdb_tbl, 16);
	spinlock_t fdb_tbl_lock;		/* for fdb tbl accesses */
	unsigned long internal_vlan_bitmap[OFDPA_INTERNAL_VLAN_BITMAP_LEN];
	DECLARE_HASHTABLE(internal_vlan_tbl, 8);
	spinlock_t internal_vlan_tbl_lock;	/* for vlan tbl accesses */
	DECLARE_HASHTABLE(neigh_tbl, 16);
	spinlock_t neigh_tbl_lock;		/* for neigh tbl accesses */
	u32 neigh_tbl_next_index;
	unsigned long ageing_time;
	bool fib_aborted;
};

struct ofdpa_port {
	struct ofdpa *ofdpa;
	struct rocker_port *rocker_port;
	struct net_device *dev;
	u32 pport;
	struct net_device *bridge_dev;
	__be16 internal_vlan_id;
	int stp_state;
	u32 brport_flags;
	unsigned long ageing_time;
	bool ctrls[OFDPA_CTRL_MAX];
	unsigned long vlan_bitmap[OFDPA_VLAN_BITMAP_LEN];
};

static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };

/* Rocker priority levels for flow table entries.  Higher
 * priority match takes precedence over lower priority match.
 */

enum {
	OFDPA_PRIORITY_UNKNOWN = 0,
	OFDPA_PRIORITY_IG_PORT = 1,
	OFDPA_PRIORITY_VLAN = 1,
	OFDPA_PRIORITY_TERM_MAC_UCAST = 0,
	OFDPA_PRIORITY_TERM_MAC_MCAST = 1,
	OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
	OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
	OFDPA_PRIORITY_BRIDGING_VLAN = 3,
	OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
	OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
	OFDPA_PRIORITY_BRIDGING_TENANT = 3,
	OFDPA_PRIORITY_ACL_CTRL = 3,
	OFDPA_PRIORITY_ACL_NORMAL = 2,
	OFDPA_PRIORITY_ACL_DFLT = 1,
};

static bool ofdpa_vlan_id_is_internal(__be16 vlan_id)
{
	u16 start = OFDPA_INTERNAL_VLAN_ID_BASE;
	u16 end = 0xffe;
	u16 _vlan_id = ntohs(vlan_id);

	return (_vlan_id >= start && _vlan_id <= end);
}

static __be16 ofdpa_port_vid_to_vlan(const struct ofdpa_port *ofdpa_port,
				     u16 vid, bool *pop_vlan)
{
	__be16 vlan_id;

	if (pop_vlan)
		*pop_vlan = false;
	vlan_id = htons(vid);
	if (!vlan_id) {
		vlan_id = ofdpa_port->internal_vlan_id;
		if (pop_vlan)
			*pop_vlan = true;
	}

	return vlan_id;
}

static u16 ofdpa_port_vlan_to_vid(const struct ofdpa_port *ofdpa_port,
				  __be16 vlan_id)
{
	if (ofdpa_vlan_id_is_internal(vlan_id))
		return 0;

	return ntohs(vlan_id);
}

static bool ofdpa_port_is_slave(const struct ofdpa_port *ofdpa_port,
				const char *kind)
{
	return ofdpa_port->bridge_dev &&
		!strcmp(ofdpa_port->bridge_dev->rtnl_link_ops->kind, kind);
}

static bool ofdpa_port_is_bridged(const struct ofdpa_port *ofdpa_port)
{
	return ofdpa_port_is_slave(ofdpa_port, "bridge");
}

static bool ofdpa_port_is_ovsed(const struct ofdpa_port *ofdpa_port)
{
	return ofdpa_port_is_slave(ofdpa_port, "openvswitch");
}

#define OFDPA_OP_FLAG_REMOVE		BIT(0)
#define OFDPA_OP_FLAG_NOWAIT		BIT(1)
#define OFDPA_OP_FLAG_LEARNED		BIT(2)
#define OFDPA_OP_FLAG_REFRESH		BIT(3)

static bool ofdpa_flags_nowait(int flags)
{
	return flags & OFDPA_OP_FLAG_NOWAIT;
}

/*************************************************************
 * Flow, group, FDB, internal VLAN and neigh command prepares
 *************************************************************/

static int
ofdpa_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
			       const struct ofdpa_flow_tbl_entry *entry)
{
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
			       entry->key.ig_port.in_pport))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
			       entry->key.ig_port.in_pport_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
			       entry->key.ig_port.goto_tbl))
		return -EMSGSIZE;

	return 0;
}

static int
ofdpa_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
			    const struct ofdpa_flow_tbl_entry *entry)
{
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
			       entry->key.vlan.in_pport))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
				entry->key.vlan.vlan_id))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
				entry->key.vlan.vlan_id_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
			       entry->key.vlan.goto_tbl))
		return -EMSGSIZE;
	if (entry->key.vlan.untagged &&
	    rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
				entry->key.vlan.new_vlan_id))
		return -EMSGSIZE;

	return 0;
}

static int
ofdpa_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
				const struct ofdpa_flow_tbl_entry *entry)
{
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
			       entry->key.term_mac.in_pport))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
			       entry->key.term_mac.in_pport_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
				entry->key.term_mac.eth_type))
		return -EMSGSIZE;
	if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
			   ETH_ALEN, entry->key.term_mac.eth_dst))
		return -EMSGSIZE;
	if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
			   ETH_ALEN, entry->key.term_mac.eth_dst_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
				entry->key.term_mac.vlan_id))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
				entry->key.term_mac.vlan_id_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
			       entry->key.term_mac.goto_tbl))
		return -EMSGSIZE;
	if (entry->key.term_mac.copy_to_cpu &&
	    rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
			      entry->key.term_mac.copy_to_cpu))
		return -EMSGSIZE;

	return 0;
}

static int
ofdpa_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
				     const struct ofdpa_flow_tbl_entry *entry)
{
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
				entry->key.ucast_routing.eth_type))
		return -EMSGSIZE;
	if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
				entry->key.ucast_routing.dst4))
		return -EMSGSIZE;
	if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
				entry->key.ucast_routing.dst4_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
			       entry->key.ucast_routing.goto_tbl))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
			       entry->key.ucast_routing.group_id))
		return -EMSGSIZE;

	return 0;
}

static int
ofdpa_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
			      const struct ofdpa_flow_tbl_entry *entry)
{
	if (entry->key.bridge.has_eth_dst &&
	    rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
			   ETH_ALEN, entry->key.bridge.eth_dst))
		return -EMSGSIZE;
	if (entry->key.bridge.has_eth_dst_mask &&
	    rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
			   ETH_ALEN, entry->key.bridge.eth_dst_mask))
		return -EMSGSIZE;
	if (entry->key.bridge.vlan_id &&
	    rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
				entry->key.bridge.vlan_id))
		return -EMSGSIZE;
	if (entry->key.bridge.tunnel_id &&
	    rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
			       entry->key.bridge.tunnel_id))
		return -EMSGSIZE;
	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
			       entry->key.bridge.goto_tbl))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
			       entry->key.bridge.group_id))
		return -EMSGSIZE;
	if (entry->key.bridge.copy_to_cpu &&
	    rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
			      entry->key.bridge.copy_to_cpu))
		return -EMSGSIZE;

	return 0;
}

static int
ofdpa_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
			   const struct ofdpa_flow_tbl_entry *entry)
{
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT,
			       entry->key.acl.in_pport))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_PPORT_MASK,
			       entry->key.acl.in_pport_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
			   ETH_ALEN, entry->key.acl.eth_src))
		return -EMSGSIZE;
	if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
			   ETH_ALEN, entry->key.acl.eth_src_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
			   ETH_ALEN, entry->key.acl.eth_dst))
		return -EMSGSIZE;
	if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
			   ETH_ALEN, entry->key.acl.eth_dst_mask))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
				entry->key.acl.eth_type))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
				entry->key.acl.vlan_id))
		return -EMSGSIZE;
	if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
				entry->key.acl.vlan_id_mask))
		return -EMSGSIZE;

	switch (ntohs(entry->key.acl.eth_type)) {
	case ETH_P_IP:
	case ETH_P_IPV6:
		if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
				      entry->key.acl.ip_proto))
			return -EMSGSIZE;
		if (rocker_tlv_put_u8(desc_info,
				      ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
				      entry->key.acl.ip_proto_mask))
			return -EMSGSIZE;
		if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
				      entry->key.acl.ip_tos & 0x3f))
			return -EMSGSIZE;
		if (rocker_tlv_put_u8(desc_info,
				      ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
				      entry->key.acl.ip_tos_mask & 0x3f))
			return -EMSGSIZE;
		if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
				      (entry->key.acl.ip_tos & 0xc0) >> 6))
			return -EMSGSIZE;
		if (rocker_tlv_put_u8(desc_info,
				      ROCKER_TLV_OF_DPA_IP_ECN_MASK,
				      (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
			return -EMSGSIZE;
		break;
	}

	if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
	    rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
			       entry->key.acl.group_id))
		return -EMSGSIZE;

	return 0;
}

static int ofdpa_cmd_flow_tbl_add(const struct rocker_port *rocker_port,
				  struct rocker_desc_info *desc_info,
				  void *priv)
{
	const struct ofdpa_flow_tbl_entry *entry = priv;
	struct rocker_tlv *cmd_info;
	int err = 0;

	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
		return -EMSGSIZE;
	cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
	if (!cmd_info)
		return -EMSGSIZE;
	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
			       entry->key.tbl_id))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
			       entry->key.priority))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
		return -EMSGSIZE;
	if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
			       entry->cookie))
		return -EMSGSIZE;

	switch (entry->key.tbl_id) {
	case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
		err = ofdpa_cmd_flow_tbl_add_ig_port(desc_info, entry);
		break;
	case ROCKER_OF_DPA_TABLE_ID_VLAN:
		err = ofdpa_cmd_flow_tbl_add_vlan(desc_info, entry);
		break;
	case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
		err = ofdpa_cmd_flow_tbl_add_term_mac(desc_info, entry);
		break;
	case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
		err = ofdpa_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
		break;
	case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
		err = ofdpa_cmd_flow_tbl_add_bridge(desc_info, entry);
		break;
	case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
		err = ofdpa_cmd_flow_tbl_add_acl(desc_info, entry);
		break;
	default:
		err = -ENOTSUPP;
		break;
	}

	if (err)
		return err;

	rocker_tlv_nest_end(desc_info, cmd_info);

	return 0;
}

static int ofdpa_cmd_flow_tbl_del(const struct rocker_port *rocker_port,
				  struct rocker_desc_info *desc_info,
				  void *priv)
{
	const struct ofdpa_flow_tbl_entry *entry = priv;
	struct rocker_tlv *cmd_info;

	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
		return -EMSGSIZE;
	cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
	if (!cmd_info)
		return -EMSGSIZE;
	if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
			       entry->cookie))
		return -EMSGSIZE;
	rocker_tlv_nest_end(desc_info, cmd_info);

	return 0;
}

static int
ofdpa_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
				     struct ofdpa_group_tbl_entry *entry)
{
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_PPORT,
			       ROCKER_GROUP_PORT_GET(entry->group_id)))
		return -EMSGSIZE;
	if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
			      entry->l2_interface.pop_vlan))
		return -EMSGSIZE;

	return 0;
}

static int
ofdpa_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
				   const struct ofdpa_group_tbl_entry *entry)
{
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
			       entry->l2_rewrite.group_id))
		return -EMSGSIZE;
	if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
	    rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
			   ETH_ALEN, entry->l2_rewrite.eth_src))
		return -EMSGSIZE;
	if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
	    rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
			   ETH_ALEN, entry->l2_rewrite.eth_dst))
		return -EMSGSIZE;
	if (entry->l2_rewrite.vlan_id &&
	    rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
				entry->l2_rewrite.vlan_id))
		return -EMSGSIZE;

	return 0;
}

static int
ofdpa_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
				  const struct ofdpa_group_tbl_entry *entry)
{
	int i;
	struct rocker_tlv *group_ids;

	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
			       entry->group_count))
		return -EMSGSIZE;

	group_ids = rocker_tlv_nest_start(desc_info,
					  ROCKER_TLV_OF_DPA_GROUP_IDS);
	if (!group_ids)
		return -EMSGSIZE;

	for (i = 0; i < entry->group_count; i++)
		/* Note TLV array is 1-based */
		if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
			return -EMSGSIZE;

	rocker_tlv_nest_end(desc_info, group_ids);

	return 0;
}

static int
ofdpa_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
				   const struct ofdpa_group_tbl_entry *entry)
{
	if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
	    rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
			   ETH_ALEN, entry->l3_unicast.eth_src))
		return -EMSGSIZE;
	if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
	    rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
			   ETH_ALEN, entry->l3_unicast.eth_dst))
		return -EMSGSIZE;
	if (entry->l3_unicast.vlan_id &&
	    rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
				entry->l3_unicast.vlan_id))
		return -EMSGSIZE;
	if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
			      entry->l3_unicast.ttl_check))
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
			       entry->l3_unicast.group_id))
		return -EMSGSIZE;

	return 0;
}

static int ofdpa_cmd_group_tbl_add(const struct rocker_port *rocker_port,
				   struct rocker_desc_info *desc_info,
				   void *priv)
{
	struct ofdpa_group_tbl_entry *entry = priv;
	struct rocker_tlv *cmd_info;
	int err = 0;

	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
		return -EMSGSIZE;
	cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
	if (!cmd_info)
		return -EMSGSIZE;

	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
			       entry->group_id))
		return -EMSGSIZE;

	switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
	case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
		err = ofdpa_cmd_group_tbl_add_l2_interface(desc_info, entry);
		break;
	case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
		err = ofdpa_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
		break;
	case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
	case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
		err = ofdpa_cmd_group_tbl_add_group_ids(desc_info, entry);
		break;
	case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
		err = ofdpa_cmd_group_tbl_add_l3_unicast(desc_info, entry);
		break;
	default:
		err = -ENOTSUPP;
		break;
	}

	if (err)
		return err;

	rocker_tlv_nest_end(desc_info, cmd_info);

	return 0;
}

static int ofdpa_cmd_group_tbl_del(const struct rocker_port *rocker_port,
				   struct rocker_desc_info *desc_info,
				   void *priv)
{
	const struct ofdpa_group_tbl_entry *entry = priv;
	struct rocker_tlv *cmd_info;

	if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
		return -EMSGSIZE;
	cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
	if (!cmd_info)
		return -EMSGSIZE;
	if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
			       entry->group_id))
		return -EMSGSIZE;
	rocker_tlv_nest_end(desc_info, cmd_info);

	return 0;
}

/***************************************************
 * Flow, group, FDB, internal VLAN and neigh tables
 ***************************************************/

static struct ofdpa_flow_tbl_entry *
ofdpa_flow_tbl_find(const struct ofdpa *ofdpa,
		    const struct ofdpa_flow_tbl_entry *match)
{
	struct ofdpa_flow_tbl_entry *found;
	size_t key_len = match->key_len ? match->key_len : sizeof(found->key);

	hash_for_each_possible(ofdpa->flow_tbl, found,
			       entry, match->key_crc32) {
		if (memcmp(&found->key, &match->key, key_len) == 0)
			return found;
	}

	return NULL;
}

static int ofdpa_flow_tbl_add(struct ofdpa_port *ofdpa_port,
			      int flags, struct ofdpa_flow_tbl_entry *match)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_flow_tbl_entry *found;
	size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
	unsigned long lock_flags;

	match->key_crc32 = crc32(~0, &match->key, key_len);

	spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags);

	found = ofdpa_flow_tbl_find(ofdpa, match);

	if (found) {
		match->cookie = found->cookie;
		hash_del(&found->entry);
		kfree(found);
		found = match;
		found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_MOD;
	} else {
		found = match;
		found->cookie = ofdpa->flow_tbl_next_cookie++;
		found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD;
	}

	hash_add(ofdpa->flow_tbl, &found->entry, found->key_crc32);
	spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags);

	return rocker_cmd_exec(ofdpa_port->rocker_port,
			       ofdpa_flags_nowait(flags),
			       ofdpa_cmd_flow_tbl_add,
			       found, NULL, NULL);
}

static int ofdpa_flow_tbl_del(struct ofdpa_port *ofdpa_port,
			      int flags, struct ofdpa_flow_tbl_entry *match)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_flow_tbl_entry *found;
	size_t key_len = match->key_len ? match->key_len : sizeof(found->key);
	unsigned long lock_flags;
	int err = 0;

	match->key_crc32 = crc32(~0, &match->key, key_len);

	spin_lock_irqsave(&ofdpa->flow_tbl_lock, lock_flags);

	found = ofdpa_flow_tbl_find(ofdpa, match);

	if (found) {
		hash_del(&found->entry);
		found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL;
	}

	spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, lock_flags);

	kfree(match);

	if (found) {
		err = rocker_cmd_exec(ofdpa_port->rocker_port,
				      ofdpa_flags_nowait(flags),
				      ofdpa_cmd_flow_tbl_del,
				      found, NULL, NULL);
		kfree(found);
	}

	return err;
}

static int ofdpa_flow_tbl_do(struct ofdpa_port *ofdpa_port, int flags,
			     struct ofdpa_flow_tbl_entry *entry)
{
	if (flags & OFDPA_OP_FLAG_REMOVE)
		return ofdpa_flow_tbl_del(ofdpa_port, flags, entry);
	else
		return ofdpa_flow_tbl_add(ofdpa_port, flags, entry);
}

static int ofdpa_flow_tbl_ig_port(struct ofdpa_port *ofdpa_port, int flags,
				  u32 in_pport, u32 in_pport_mask,
				  enum rocker_of_dpa_table_id goto_tbl)
{
	struct ofdpa_flow_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	entry->key.priority = OFDPA_PRIORITY_IG_PORT;
	entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
	entry->key.ig_port.in_pport = in_pport;
	entry->key.ig_port.in_pport_mask = in_pport_mask;
	entry->key.ig_port.goto_tbl = goto_tbl;

	return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}

static int ofdpa_flow_tbl_vlan(struct ofdpa_port *ofdpa_port,
			       int flags,
			       u32 in_pport, __be16 vlan_id,
			       __be16 vlan_id_mask,
			       enum rocker_of_dpa_table_id goto_tbl,
			       bool untagged, __be16 new_vlan_id)
{
	struct ofdpa_flow_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	entry->key.priority = OFDPA_PRIORITY_VLAN;
	entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
	entry->key.vlan.in_pport = in_pport;
	entry->key.vlan.vlan_id = vlan_id;
	entry->key.vlan.vlan_id_mask = vlan_id_mask;
	entry->key.vlan.goto_tbl = goto_tbl;

	entry->key.vlan.untagged = untagged;
	entry->key.vlan.new_vlan_id = new_vlan_id;

	return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}

static int ofdpa_flow_tbl_term_mac(struct ofdpa_port *ofdpa_port,
				   u32 in_pport, u32 in_pport_mask,
				   __be16 eth_type, const u8 *eth_dst,
				   const u8 *eth_dst_mask, __be16 vlan_id,
				   __be16 vlan_id_mask, bool copy_to_cpu,
				   int flags)
{
	struct ofdpa_flow_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	if (is_multicast_ether_addr(eth_dst)) {
		entry->key.priority = OFDPA_PRIORITY_TERM_MAC_MCAST;
		entry->key.term_mac.goto_tbl =
			 ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
	} else {
		entry->key.priority = OFDPA_PRIORITY_TERM_MAC_UCAST;
		entry->key.term_mac.goto_tbl =
			 ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
	}

	entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
	entry->key.term_mac.in_pport = in_pport;
	entry->key.term_mac.in_pport_mask = in_pport_mask;
	entry->key.term_mac.eth_type = eth_type;
	ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
	ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
	entry->key.term_mac.vlan_id = vlan_id;
	entry->key.term_mac.vlan_id_mask = vlan_id_mask;
	entry->key.term_mac.copy_to_cpu = copy_to_cpu;

	return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}

static int ofdpa_flow_tbl_bridge(struct ofdpa_port *ofdpa_port,
				 int flags, const u8 *eth_dst,
				 const u8 *eth_dst_mask,  __be16 vlan_id,
				 u32 tunnel_id,
				 enum rocker_of_dpa_table_id goto_tbl,
				 u32 group_id, bool copy_to_cpu)
{
	struct ofdpa_flow_tbl_entry *entry;
	u32 priority;
	bool vlan_bridging = !!vlan_id;
	bool dflt = !eth_dst || eth_dst_mask;
	bool wild = false;

	entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
	if (!entry)
		return -ENOMEM;

	entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;

	if (eth_dst) {
		entry->key.bridge.has_eth_dst = 1;
		ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
	}
	if (eth_dst_mask) {
		entry->key.bridge.has_eth_dst_mask = 1;
		ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
		if (!ether_addr_equal(eth_dst_mask, ff_mac))
			wild = true;
	}

	priority = OFDPA_PRIORITY_UNKNOWN;
	if (vlan_bridging && dflt && wild)
		priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
	else if (vlan_bridging && dflt && !wild)
		priority = OFDPA_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
	else if (vlan_bridging && !dflt)
		priority = OFDPA_PRIORITY_BRIDGING_VLAN;
	else if (!vlan_bridging && dflt && wild)
		priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
	else if (!vlan_bridging && dflt && !wild)
		priority = OFDPA_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
	else if (!vlan_bridging && !dflt)
		priority = OFDPA_PRIORITY_BRIDGING_TENANT;

	entry->key.priority = priority;
	entry->key.bridge.vlan_id = vlan_id;
	entry->key.bridge.tunnel_id = tunnel_id;
	entry->key.bridge.goto_tbl = goto_tbl;
	entry->key.bridge.group_id = group_id;
	entry->key.bridge.copy_to_cpu = copy_to_cpu;

	return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}

static int ofdpa_flow_tbl_ucast4_routing(struct ofdpa_port *ofdpa_port,
					 __be16 eth_type, __be32 dst,
					 __be32 dst_mask, u32 priority,
					 enum rocker_of_dpa_table_id goto_tbl,
					 u32 group_id, struct fib_info *fi,
					 int flags)
{
	struct ofdpa_flow_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
	entry->key.priority = priority;
	entry->key.ucast_routing.eth_type = eth_type;
	entry->key.ucast_routing.dst4 = dst;
	entry->key.ucast_routing.dst4_mask = dst_mask;
	entry->key.ucast_routing.goto_tbl = goto_tbl;
	entry->key.ucast_routing.group_id = group_id;
	entry->key_len = offsetof(struct ofdpa_flow_tbl_key,
				  ucast_routing.group_id);
	entry->fi = fi;

	return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}

static int ofdpa_flow_tbl_acl(struct ofdpa_port *ofdpa_port, int flags,
			      u32 in_pport, u32 in_pport_mask,
			      const u8 *eth_src, const u8 *eth_src_mask,
			      const u8 *eth_dst, const u8 *eth_dst_mask,
			      __be16 eth_type, __be16 vlan_id,
			      __be16 vlan_id_mask, u8 ip_proto,
			      u8 ip_proto_mask, u8 ip_tos, u8 ip_tos_mask,
			      u32 group_id)
{
	u32 priority;
	struct ofdpa_flow_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	priority = OFDPA_PRIORITY_ACL_NORMAL;
	if (eth_dst && eth_dst_mask) {
		if (ether_addr_equal(eth_dst_mask, mcast_mac))
			priority = OFDPA_PRIORITY_ACL_DFLT;
		else if (is_link_local_ether_addr(eth_dst))
			priority = OFDPA_PRIORITY_ACL_CTRL;
	}

	entry->key.priority = priority;
	entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
	entry->key.acl.in_pport = in_pport;
	entry->key.acl.in_pport_mask = in_pport_mask;

	if (eth_src)
		ether_addr_copy(entry->key.acl.eth_src, eth_src);
	if (eth_src_mask)
		ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
	if (eth_dst)
		ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
	if (eth_dst_mask)
		ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);

	entry->key.acl.eth_type = eth_type;
	entry->key.acl.vlan_id = vlan_id;
	entry->key.acl.vlan_id_mask = vlan_id_mask;
	entry->key.acl.ip_proto = ip_proto;
	entry->key.acl.ip_proto_mask = ip_proto_mask;
	entry->key.acl.ip_tos = ip_tos;
	entry->key.acl.ip_tos_mask = ip_tos_mask;
	entry->key.acl.group_id = group_id;

	return ofdpa_flow_tbl_do(ofdpa_port, flags, entry);
}

static struct ofdpa_group_tbl_entry *
ofdpa_group_tbl_find(const struct ofdpa *ofdpa,
		     const struct ofdpa_group_tbl_entry *match)
{
	struct ofdpa_group_tbl_entry *found;

	hash_for_each_possible(ofdpa->group_tbl, found,
			       entry, match->group_id) {
		if (found->group_id == match->group_id)
			return found;
	}

	return NULL;
}

static void ofdpa_group_tbl_entry_free(struct ofdpa_group_tbl_entry *entry)
{
	switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
	case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
	case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
		kfree(entry->group_ids);
		break;
	default:
		break;
	}
	kfree(entry);
}

static int ofdpa_group_tbl_add(struct ofdpa_port *ofdpa_port, int flags,
			       struct ofdpa_group_tbl_entry *match)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_group_tbl_entry *found;
	unsigned long lock_flags;

	spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags);

	found = ofdpa_group_tbl_find(ofdpa, match);

	if (found) {
		hash_del(&found->entry);
		ofdpa_group_tbl_entry_free(found);
		found = match;
		found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
	} else {
		found = match;
		found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
	}

	hash_add(ofdpa->group_tbl, &found->entry, found->group_id);

	spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags);

	return rocker_cmd_exec(ofdpa_port->rocker_port,
			       ofdpa_flags_nowait(flags),
			       ofdpa_cmd_group_tbl_add,
			       found, NULL, NULL);
}

static int ofdpa_group_tbl_del(struct ofdpa_port *ofdpa_port, int flags,
			       struct ofdpa_group_tbl_entry *match)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_group_tbl_entry *found;
	unsigned long lock_flags;
	int err = 0;

	spin_lock_irqsave(&ofdpa->group_tbl_lock, lock_flags);

	found = ofdpa_group_tbl_find(ofdpa, match);

	if (found) {
		hash_del(&found->entry);
		found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
	}

	spin_unlock_irqrestore(&ofdpa->group_tbl_lock, lock_flags);

	ofdpa_group_tbl_entry_free(match);

	if (found) {
		err = rocker_cmd_exec(ofdpa_port->rocker_port,
				      ofdpa_flags_nowait(flags),
				      ofdpa_cmd_group_tbl_del,
				      found, NULL, NULL);
		ofdpa_group_tbl_entry_free(found);
	}

	return err;
}

static int ofdpa_group_tbl_do(struct ofdpa_port *ofdpa_port, int flags,
			      struct ofdpa_group_tbl_entry *entry)
{
	if (flags & OFDPA_OP_FLAG_REMOVE)
		return ofdpa_group_tbl_del(ofdpa_port, flags, entry);
	else
		return ofdpa_group_tbl_add(ofdpa_port, flags, entry);
}

static int ofdpa_group_l2_interface(struct ofdpa_port *ofdpa_port,
				    int flags, __be16 vlan_id,
				    u32 out_pport, int pop_vlan)
{
	struct ofdpa_group_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
	entry->l2_interface.pop_vlan = pop_vlan;

	return ofdpa_group_tbl_do(ofdpa_port, flags, entry);
}

static int ofdpa_group_l2_fan_out(struct ofdpa_port *ofdpa_port,
				  int flags, u8 group_count,
				  const u32 *group_ids, u32 group_id)
{
	struct ofdpa_group_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	entry->group_id = group_id;
	entry->group_count = group_count;

	entry->group_ids = kcalloc(group_count, sizeof(u32), GFP_KERNEL);
	if (!entry->group_ids) {
		kfree(entry);
		return -ENOMEM;
	}
	memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));

	return ofdpa_group_tbl_do(ofdpa_port, flags, entry);
}

static int ofdpa_group_l2_flood(struct ofdpa_port *ofdpa_port,
				int flags, __be16 vlan_id,
				u8 group_count,	const u32 *group_ids,
				u32 group_id)
{
	return ofdpa_group_l2_fan_out(ofdpa_port, flags,
				      group_count, group_ids,
				      group_id);
}

static int ofdpa_group_l3_unicast(struct ofdpa_port *ofdpa_port, int flags,
				  u32 index, const u8 *src_mac, const u8 *dst_mac,
				  __be16 vlan_id, bool ttl_check, u32 pport)
{
	struct ofdpa_group_tbl_entry *entry;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	entry->group_id = ROCKER_GROUP_L3_UNICAST(index);
	if (src_mac)
		ether_addr_copy(entry->l3_unicast.eth_src, src_mac);
	if (dst_mac)
		ether_addr_copy(entry->l3_unicast.eth_dst, dst_mac);
	entry->l3_unicast.vlan_id = vlan_id;
	entry->l3_unicast.ttl_check = ttl_check;
	entry->l3_unicast.group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, pport);

	return ofdpa_group_tbl_do(ofdpa_port, flags, entry);
}

static struct ofdpa_neigh_tbl_entry *
ofdpa_neigh_tbl_find(const struct ofdpa *ofdpa, __be32 ip_addr)
{
	struct ofdpa_neigh_tbl_entry *found;

	hash_for_each_possible(ofdpa->neigh_tbl, found,
			       entry, be32_to_cpu(ip_addr))
		if (found->ip_addr == ip_addr)
			return found;

	return NULL;
}

static void ofdpa_neigh_add(struct ofdpa *ofdpa,
			    struct ofdpa_neigh_tbl_entry *entry)
{
	entry->index = ofdpa->neigh_tbl_next_index++;
	entry->ref_count++;
	hash_add(ofdpa->neigh_tbl, &entry->entry,
		 be32_to_cpu(entry->ip_addr));
}

static void ofdpa_neigh_del(struct ofdpa_neigh_tbl_entry *entry)
{
	if (--entry->ref_count == 0) {
		hash_del(&entry->entry);
		kfree(entry);
	}
}

static void ofdpa_neigh_update(struct ofdpa_neigh_tbl_entry *entry,
			       const u8 *eth_dst, bool ttl_check)
{
	if (eth_dst) {
		ether_addr_copy(entry->eth_dst, eth_dst);
		entry->ttl_check = ttl_check;
	} else {
		entry->ref_count++;
	}
}

static int ofdpa_port_ipv4_neigh(struct ofdpa_port *ofdpa_port,
				 int flags, __be32 ip_addr, const u8 *eth_dst)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_neigh_tbl_entry *entry;
	struct ofdpa_neigh_tbl_entry *found;
	unsigned long lock_flags;
	__be16 eth_type = htons(ETH_P_IP);
	enum rocker_of_dpa_table_id goto_tbl =
			ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
	u32 group_id;
	u32 priority = 0;
	bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
	bool updating;
	bool removing;
	int err = 0;

	entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
	if (!entry)
		return -ENOMEM;

	spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags);

	found = ofdpa_neigh_tbl_find(ofdpa, ip_addr);

	updating = found && adding;
	removing = found && !adding;
	adding = !found && adding;

	if (adding) {
		entry->ip_addr = ip_addr;
		entry->dev = ofdpa_port->dev;
		ether_addr_copy(entry->eth_dst, eth_dst);
		entry->ttl_check = true;
		ofdpa_neigh_add(ofdpa, entry);
	} else if (removing) {
		memcpy(entry, found, sizeof(*entry));
		ofdpa_neigh_del(found);
	} else if (updating) {
		ofdpa_neigh_update(found, eth_dst, true);
		memcpy(entry, found, sizeof(*entry));
	} else {
		err = -ENOENT;
	}

	spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags);

	if (err)
		goto err_out;

	/* For each active neighbor, we have an L3 unicast group and
	 * a /32 route to the neighbor, which uses the L3 unicast
	 * group.  The L3 unicast group can also be referred to by
	 * other routes' nexthops.
	 */

	err = ofdpa_group_l3_unicast(ofdpa_port, flags,
				     entry->index,
				     ofdpa_port->dev->dev_addr,
				     entry->eth_dst,
				     ofdpa_port->internal_vlan_id,
				     entry->ttl_check,
				     ofdpa_port->pport);
	if (err) {
		netdev_err(ofdpa_port->dev, "Error (%d) L3 unicast group index %d\n",
			   err, entry->index);
		goto err_out;
	}

	if (adding || removing) {
		group_id = ROCKER_GROUP_L3_UNICAST(entry->index);
		err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port,
						    eth_type, ip_addr,
						    inet_make_mask(32),
						    priority, goto_tbl,
						    group_id, NULL, flags);

		if (err)
			netdev_err(ofdpa_port->dev, "Error (%d) /32 unicast route %pI4 group 0x%08x\n",
				   err, &entry->ip_addr, group_id);
	}

err_out:
	if (!adding)
		kfree(entry);

	return err;
}

static int ofdpa_port_ipv4_resolve(struct ofdpa_port *ofdpa_port,
				   __be32 ip_addr)
{
	struct net_device *dev = ofdpa_port->dev;
	struct neighbour *n = __ipv4_neigh_lookup(dev, (__force u32)ip_addr);
	int err = 0;

	if (!n) {
		n = neigh_create(&arp_tbl, &ip_addr, dev);
		if (IS_ERR(n))
			return PTR_ERR(n);
	}

	/* If the neigh is already resolved, then go ahead and
	 * install the entry, otherwise start the ARP process to
	 * resolve the neigh.
	 */

	if (n->nud_state & NUD_VALID)
		err = ofdpa_port_ipv4_neigh(ofdpa_port, 0,
					    ip_addr, n->ha);
	else
		neigh_event_send(n, NULL);

	neigh_release(n);
	return err;
}

static int ofdpa_port_ipv4_nh(struct ofdpa_port *ofdpa_port,
			      int flags, __be32 ip_addr, u32 *index)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_neigh_tbl_entry *entry;
	struct ofdpa_neigh_tbl_entry *found;
	unsigned long lock_flags;
	bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
	bool updating;
	bool removing;
	bool resolved = true;
	int err = 0;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return -ENOMEM;

	spin_lock_irqsave(&ofdpa->neigh_tbl_lock, lock_flags);

	found = ofdpa_neigh_tbl_find(ofdpa, ip_addr);

	updating = found && adding;
	removing = found && !adding;
	adding = !found && adding;

	if (adding) {
		entry->ip_addr = ip_addr;
		entry->dev = ofdpa_port->dev;
		ofdpa_neigh_add(ofdpa, entry);
		*index = entry->index;
		resolved = false;
	} else if (removing) {
		*index = found->index;
		ofdpa_neigh_del(found);
	} else if (updating) {
		ofdpa_neigh_update(found, NULL, false);
		resolved = !is_zero_ether_addr(found->eth_dst);
		*index = found->index;
	} else {
		err = -ENOENT;
	}

	spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, lock_flags);

	if (!adding)
		kfree(entry);

	if (err)
		return err;

	/* Resolved means neigh ip_addr is resolved to neigh mac. */

	if (!resolved)
		err = ofdpa_port_ipv4_resolve(ofdpa_port, ip_addr);

	return err;
}

static struct ofdpa_port *ofdpa_port_get(const struct ofdpa *ofdpa,
					 int port_index)
{
	struct rocker_port *rocker_port;

	rocker_port = ofdpa->rocker->ports[port_index];
	return rocker_port ? rocker_port->wpriv : NULL;
}

static int ofdpa_port_vlan_flood_group(struct ofdpa_port *ofdpa_port,
				       int flags, __be16 vlan_id)
{
	struct ofdpa_port *p;
	const struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	unsigned int port_count = ofdpa->rocker->port_count;
	u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
	u32 *group_ids;
	u8 group_count = 0;
	int err = 0;
	int i;

	group_ids = kcalloc(port_count, sizeof(u32), GFP_KERNEL);
	if (!group_ids)
		return -ENOMEM;

	/* Adjust the flood group for this VLAN.  The flood group
	 * references an L2 interface group for each port in this
	 * VLAN.
	 */

	for (i = 0; i < port_count; i++) {
		p = ofdpa_port_get(ofdpa, i);
		if (!p)
			continue;
		if (!ofdpa_port_is_bridged(p))
			continue;
		if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
			group_ids[group_count++] =
				ROCKER_GROUP_L2_INTERFACE(vlan_id, p->pport);
		}
	}

	/* If there are no bridged ports in this VLAN, we're done */
	if (group_count == 0)
		goto no_ports_in_vlan;

	err = ofdpa_group_l2_flood(ofdpa_port, flags, vlan_id,
				   group_count, group_ids, group_id);
	if (err)
		netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err);

no_ports_in_vlan:
	kfree(group_ids);
	return err;
}

static int ofdpa_port_vlan_l2_groups(struct ofdpa_port *ofdpa_port, int flags,
				     __be16 vlan_id, bool pop_vlan)
{
	const struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	unsigned int port_count = ofdpa->rocker->port_count;
	struct ofdpa_port *p;
	bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
	u32 out_pport;
	int ref = 0;
	int err;
	int i;

	/* An L2 interface group for this port in this VLAN, but
	 * only when port STP state is LEARNING|FORWARDING.
	 */

	if (ofdpa_port->stp_state == BR_STATE_LEARNING ||
	    ofdpa_port->stp_state == BR_STATE_FORWARDING) {
		out_pport = ofdpa_port->pport;
		err = ofdpa_group_l2_interface(ofdpa_port, flags,
					       vlan_id, out_pport, pop_vlan);
		if (err) {
			netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n",
				   err, out_pport);
			return err;
		}
	}

	/* An L2 interface group for this VLAN to CPU port.
	 * Add when first port joins this VLAN and destroy when
	 * last port leaves this VLAN.
	 */

	for (i = 0; i < port_count; i++) {
		p = ofdpa_port_get(ofdpa, i);
		if (p && test_bit(ntohs(vlan_id), p->vlan_bitmap))
			ref++;
	}

	if ((!adding || ref != 1) && (adding || ref != 0))
		return 0;

	out_pport = 0;
	err = ofdpa_group_l2_interface(ofdpa_port, flags,
				       vlan_id, out_pport, pop_vlan);
	if (err) {
		netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for CPU port\n", err);
		return err;
	}

	return 0;
}

static struct ofdpa_ctrl {
	const u8 *eth_dst;
	const u8 *eth_dst_mask;
	__be16 eth_type;
	bool acl;
	bool bridge;
	bool term;
	bool copy_to_cpu;
} ofdpa_ctrls[] = {
	[OFDPA_CTRL_LINK_LOCAL_MCAST] = {
		/* pass link local multicast pkts up to CPU for filtering */
		.eth_dst = ll_mac,
		.eth_dst_mask = ll_mask,
		.acl = true,
	},
	[OFDPA_CTRL_LOCAL_ARP] = {
		/* pass local ARP pkts up to CPU */
		.eth_dst = zero_mac,
		.eth_dst_mask = zero_mac,
		.eth_type = htons(ETH_P_ARP),
		.acl = true,
	},
	[OFDPA_CTRL_IPV4_MCAST] = {
		/* pass IPv4 mcast pkts up to CPU, RFC 1112 */
		.eth_dst = ipv4_mcast,
		.eth_dst_mask = ipv4_mask,
		.eth_type = htons(ETH_P_IP),
		.term  = true,
		.copy_to_cpu = true,
	},
	[OFDPA_CTRL_IPV6_MCAST] = {
		/* pass IPv6 mcast pkts up to CPU, RFC 2464 */
		.eth_dst = ipv6_mcast,
		.eth_dst_mask = ipv6_mask,
		.eth_type = htons(ETH_P_IPV6),
		.term  = true,
		.copy_to_cpu = true,
	},
	[OFDPA_CTRL_DFLT_BRIDGING] = {
		/* flood any pkts on vlan */
		.bridge = true,
		.copy_to_cpu = true,
	},
	[OFDPA_CTRL_DFLT_OVS] = {
		/* pass all pkts up to CPU */
		.eth_dst = zero_mac,
		.eth_dst_mask = zero_mac,
		.acl = true,
	},
};

static int ofdpa_port_ctrl_vlan_acl(struct ofdpa_port *ofdpa_port, int flags,
				    const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
	u32 in_pport = ofdpa_port->pport;
	u32 in_pport_mask = 0xffffffff;
	u32 out_pport = 0;
	const u8 *eth_src = NULL;
	const u8 *eth_src_mask = NULL;
	__be16 vlan_id_mask = htons(0xffff);
	u8 ip_proto = 0;
	u8 ip_proto_mask = 0;
	u8 ip_tos = 0;
	u8 ip_tos_mask = 0;
	u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);
	int err;

	err = ofdpa_flow_tbl_acl(ofdpa_port, flags,
				 in_pport, in_pport_mask,
				 eth_src, eth_src_mask,
				 ctrl->eth_dst, ctrl->eth_dst_mask,
				 ctrl->eth_type,
				 vlan_id, vlan_id_mask,
				 ip_proto, ip_proto_mask,
				 ip_tos, ip_tos_mask,
				 group_id);

	if (err)
		netdev_err(ofdpa_port->dev, "Error (%d) ctrl ACL\n", err);

	return err;
}

static int ofdpa_port_ctrl_vlan_bridge(struct ofdpa_port *ofdpa_port,
				       int flags, const struct ofdpa_ctrl *ctrl,
				       __be16 vlan_id)
{
	enum rocker_of_dpa_table_id goto_tbl =
			ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
	u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
	u32 tunnel_id = 0;
	int err;

	if (!ofdpa_port_is_bridged(ofdpa_port))
		return 0;

	err = ofdpa_flow_tbl_bridge(ofdpa_port, flags,
				    ctrl->eth_dst, ctrl->eth_dst_mask,
				    vlan_id, tunnel_id,
				    goto_tbl, group_id, ctrl->copy_to_cpu);

	if (err)
		netdev_err(ofdpa_port->dev, "Error (%d) ctrl FLOOD\n", err);

	return err;
}

static int ofdpa_port_ctrl_vlan_term(struct ofdpa_port *ofdpa_port, int flags,
				     const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
	u32 in_pport_mask = 0xffffffff;
	__be16 vlan_id_mask = htons(0xffff);
	int err;

	if (ntohs(vlan_id) == 0)
		vlan_id = ofdpa_port->internal_vlan_id;

	err = ofdpa_flow_tbl_term_mac(ofdpa_port, ofdpa_port->pport, in_pport_mask,
				      ctrl->eth_type, ctrl->eth_dst,
				      ctrl->eth_dst_mask, vlan_id,
				      vlan_id_mask, ctrl->copy_to_cpu,
				      flags);

	if (err)
		netdev_err(ofdpa_port->dev, "Error (%d) ctrl term\n", err);

	return err;
}

static int ofdpa_port_ctrl_vlan(struct ofdpa_port *ofdpa_port, int flags,
				const struct ofdpa_ctrl *ctrl, __be16 vlan_id)
{
	if (ctrl->acl)
		return ofdpa_port_ctrl_vlan_acl(ofdpa_port, flags,
						ctrl, vlan_id);
	if (ctrl->bridge)
		return ofdpa_port_ctrl_vlan_bridge(ofdpa_port, flags,
						   ctrl, vlan_id);

	if (ctrl->term)
		return ofdpa_port_ctrl_vlan_term(ofdpa_port, flags,
						 ctrl, vlan_id);

	return -EOPNOTSUPP;
}

static int ofdpa_port_ctrl_vlan_add(struct ofdpa_port *ofdpa_port, int flags,
				    __be16 vlan_id)
{
	int err = 0;
	int i;

	for (i = 0; i < OFDPA_CTRL_MAX; i++) {
		if (ofdpa_port->ctrls[i]) {
			err = ofdpa_port_ctrl_vlan(ofdpa_port, flags,
						   &ofdpa_ctrls[i], vlan_id);
			if (err)
				return err;
		}
	}

	return err;
}

static int ofdpa_port_ctrl(struct ofdpa_port *ofdpa_port, int flags,
			   const struct ofdpa_ctrl *ctrl)
{
	u16 vid;
	int err = 0;

	for (vid = 1; vid < VLAN_N_VID; vid++) {
		if (!test_bit(vid, ofdpa_port->vlan_bitmap))
			continue;
		err = ofdpa_port_ctrl_vlan(ofdpa_port, flags,
					   ctrl, htons(vid));
		if (err)
			break;
	}

	return err;
}

static int ofdpa_port_vlan(struct ofdpa_port *ofdpa_port, int flags,
			   u16 vid)
{
	enum rocker_of_dpa_table_id goto_tbl =
			ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
	u32 in_pport = ofdpa_port->pport;
	__be16 vlan_id = htons(vid);
	__be16 vlan_id_mask = htons(0xffff);
	__be16 internal_vlan_id;
	bool untagged;
	bool adding = !(flags & OFDPA_OP_FLAG_REMOVE);
	int err;

	internal_vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, &untagged);

	if (adding &&
	    test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap))
		return 0; /* already added */
	else if (!adding &&
		 !test_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap))
		return 0; /* already removed */

	change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap);

	if (adding) {
		err = ofdpa_port_ctrl_vlan_add(ofdpa_port, flags,
					       internal_vlan_id);
		if (err) {
			netdev_err(ofdpa_port->dev, "Error (%d) port ctrl vlan add\n", err);
			goto err_vlan_add;
		}
	}

	err = ofdpa_port_vlan_l2_groups(ofdpa_port, flags,
					internal_vlan_id, untagged);
	if (err) {
		netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 groups\n", err);
		goto err_vlan_l2_groups;
	}

	err = ofdpa_port_vlan_flood_group(ofdpa_port, flags,
					  internal_vlan_id);
	if (err) {
		netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 flood group\n", err);
		goto err_flood_group;
	}

	err = ofdpa_flow_tbl_vlan(ofdpa_port, flags,
				  in_pport, vlan_id, vlan_id_mask,
				  goto_tbl, untagged, internal_vlan_id);
	if (err)
		netdev_err(ofdpa_port->dev, "Error (%d) port VLAN table\n", err);

	return 0;

err_vlan_add:
err_vlan_l2_groups:
err_flood_group:
	change_bit(ntohs(internal_vlan_id), ofdpa_port->vlan_bitmap);
	return err;
}

static int ofdpa_port_ig_tbl(struct ofdpa_port *ofdpa_port, int flags)
{
	enum rocker_of_dpa_table_id goto_tbl;
	u32 in_pport;
	u32 in_pport_mask;
	int err;

	/* Normal Ethernet Frames.  Matches pkts from any local physical
	 * ports.  Goto VLAN tbl.
	 */

	in_pport = 0;
	in_pport_mask = 0xffff0000;
	goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;

	err = ofdpa_flow_tbl_ig_port(ofdpa_port, flags,
				     in_pport, in_pport_mask,
				     goto_tbl);
	if (err)
		netdev_err(ofdpa_port->dev, "Error (%d) ingress port table entry\n", err);

	return err;
}

struct ofdpa_fdb_learn_work {
	struct work_struct work;
	struct ofdpa_port *ofdpa_port;
	int flags;
	u8 addr[ETH_ALEN];
	u16 vid;
};

static void ofdpa_port_fdb_learn_work(struct work_struct *work)
{
	const struct ofdpa_fdb_learn_work *lw =
		container_of(work, struct ofdpa_fdb_learn_work, work);
	bool removing = (lw->flags & OFDPA_OP_FLAG_REMOVE);
	struct switchdev_notifier_fdb_info info = {};
	enum switchdev_notifier_type event;

	info.addr = lw->addr;
	info.vid = lw->vid;
	info.offloaded = !removing;
	event = removing ? SWITCHDEV_FDB_DEL_TO_BRIDGE :
			   SWITCHDEV_FDB_ADD_TO_BRIDGE;

	rtnl_lock();
	call_switchdev_notifiers(event, lw->ofdpa_port->dev, &info.info, NULL);
	rtnl_unlock();

	kfree(work);
}

static int ofdpa_port_fdb_learn(struct ofdpa_port *ofdpa_port,
				int flags, const u8 *addr, __be16 vlan_id)
{
	struct ofdpa_fdb_learn_work *lw;
	enum rocker_of_dpa_table_id goto_tbl =
			ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
	u32 out_pport = ofdpa_port->pport;
	u32 tunnel_id = 0;
	u32 group_id = ROCKER_GROUP_NONE;
	bool copy_to_cpu = false;
	int err;

	if (ofdpa_port_is_bridged(ofdpa_port))
		group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_pport);

	if (!(flags & OFDPA_OP_FLAG_REFRESH)) {
		err = ofdpa_flow_tbl_bridge(ofdpa_port, flags, addr,
					    NULL, vlan_id, tunnel_id, goto_tbl,
					    group_id, copy_to_cpu);
		if (err)
			return err;
	}

	if (!ofdpa_port_is_bridged(ofdpa_port))
		return 0;

	if (!(flags & OFDPA_OP_FLAG_LEARNED))
		return 0;

	lw = kzalloc(sizeof(*lw), GFP_ATOMIC);
	if (!lw)
		return -ENOMEM;

	INIT_WORK(&lw->work, ofdpa_port_fdb_learn_work);

	lw->ofdpa_port = ofdpa_port;
	lw->flags = flags;
	ether_addr_copy(lw->addr, addr);
	lw->vid = ofdpa_port_vlan_to_vid(ofdpa_port, vlan_id);

	schedule_work(&lw->work);
	return 0;
}

static struct ofdpa_fdb_tbl_entry *
ofdpa_fdb_tbl_find(const struct ofdpa *ofdpa,
		   const struct ofdpa_fdb_tbl_entry *match)
{
	struct ofdpa_fdb_tbl_entry *found;

	hash_for_each_possible(ofdpa->fdb_tbl, found, entry, match->key_crc32)
		if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
			return found;

	return NULL;
}

static int ofdpa_port_fdb(struct ofdpa_port *ofdpa_port,
			  const unsigned char *addr,
			  __be16 vlan_id, int flags)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_fdb_tbl_entry *fdb;
	struct ofdpa_fdb_tbl_entry *found;
	bool removing = (flags & OFDPA_OP_FLAG_REMOVE);
	unsigned long lock_flags;

	fdb = kzalloc(sizeof(*fdb), GFP_KERNEL);
	if (!fdb)
		return -ENOMEM;

	fdb->learned = (flags & OFDPA_OP_FLAG_LEARNED);
	fdb->touched = jiffies;
	fdb->key.ofdpa_port = ofdpa_port;
	ether_addr_copy(fdb->key.addr, addr);
	fdb->key.vlan_id = vlan_id;
	fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));

	spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);

	found = ofdpa_fdb_tbl_find(ofdpa, fdb);

	if (found) {
		found->touched = jiffies;
		if (removing) {
			kfree(fdb);
			hash_del(&found->entry);
		}
	} else if (!removing) {
		hash_add(ofdpa->fdb_tbl, &fdb->entry,
			 fdb->key_crc32);
	}

	spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);

	/* Check if adding and already exists, or removing and can't find */
	if (!found != !removing) {
		kfree(fdb);
		if (!found && removing)
			return 0;
		/* Refreshing existing to update aging timers */
		flags |= OFDPA_OP_FLAG_REFRESH;
	}

	return ofdpa_port_fdb_learn(ofdpa_port, flags, addr, vlan_id);
}

static int ofdpa_port_fdb_flush(struct ofdpa_port *ofdpa_port, int flags)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_fdb_tbl_entry *found;
	unsigned long lock_flags;
	struct hlist_node *tmp;
	int bkt;
	int err = 0;

	if (ofdpa_port->stp_state == BR_STATE_LEARNING ||
	    ofdpa_port->stp_state == BR_STATE_FORWARDING)
		return 0;

	flags |= OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE;

	spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);

	hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, found, entry) {
		if (found->key.ofdpa_port != ofdpa_port)
			continue;
		if (!found->learned)
			continue;
		err = ofdpa_port_fdb_learn(ofdpa_port, flags,
					   found->key.addr,
					   found->key.vlan_id);
		if (err)
			goto err_out;
		hash_del(&found->entry);
	}

err_out:
	spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);

	return err;
}

static void ofdpa_fdb_cleanup(struct timer_list *t)
{
	struct ofdpa *ofdpa = from_timer(ofdpa, t, fdb_cleanup_timer);
	struct ofdpa_port *ofdpa_port;
	struct ofdpa_fdb_tbl_entry *entry;
	struct hlist_node *tmp;
	unsigned long next_timer = jiffies + ofdpa->ageing_time;
	unsigned long expires;
	unsigned long lock_flags;
	int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_REMOVE |
		    OFDPA_OP_FLAG_LEARNED;
	int bkt;

	spin_lock_irqsave(&ofdpa->fdb_tbl_lock, lock_flags);

	hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, entry, entry) {
		if (!entry->learned)
			continue;
		ofdpa_port = entry->key.ofdpa_port;
		expires = entry->touched + ofdpa_port->ageing_time;
		if (time_before_eq(expires, jiffies)) {
			ofdpa_port_fdb_learn(ofdpa_port, flags,
					     entry->key.addr,
					     entry->key.vlan_id);
			hash_del(&entry->entry);
		} else if (time_before(expires, next_timer)) {
			next_timer = expires;
		}
	}

	spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, lock_flags);

	mod_timer(&ofdpa->fdb_cleanup_timer, round_jiffies_up(next_timer));
}

static int ofdpa_port_router_mac(struct ofdpa_port *ofdpa_port,
				 int flags, __be16 vlan_id)
{
	u32 in_pport_mask = 0xffffffff;
	__be16 eth_type;
	const u8 *dst_mac_mask = ff_mac;
	__be16 vlan_id_mask = htons(0xffff);
	bool copy_to_cpu = false;
	int err;

	if (ntohs(vlan_id) == 0)
		vlan_id = ofdpa_port->internal_vlan_id;

	eth_type = htons(ETH_P_IP);
	err = ofdpa_flow_tbl_term_mac(ofdpa_port, ofdpa_port->pport,
				      in_pport_mask, eth_type,
				      ofdpa_port->dev->dev_addr,
				      dst_mac_mask, vlan_id, vlan_id_mask,
				      copy_to_cpu, flags);
	if (err)
		return err;

	eth_type = htons(ETH_P_IPV6);
	err = ofdpa_flow_tbl_term_mac(ofdpa_port, ofdpa_port->pport,
				      in_pport_mask, eth_type,
				      ofdpa_port->dev->dev_addr,
				      dst_mac_mask, vlan_id, vlan_id_mask,
				      copy_to_cpu, flags);

	return err;
}

static int ofdpa_port_fwding(struct ofdpa_port *ofdpa_port, int flags)
{
	bool pop_vlan;
	u32 out_pport;
	__be16 vlan_id;
	u16 vid;
	int err;

	/* Port will be forwarding-enabled if its STP state is LEARNING
	 * or FORWARDING.  Traffic from CPU can still egress, regardless of
	 * port STP state.  Use L2 interface group on port VLANs as a way
	 * to toggle port forwarding: if forwarding is disabled, L2
	 * interface group will not exist.
	 */

	if (ofdpa_port->stp_state != BR_STATE_LEARNING &&
	    ofdpa_port->stp_state != BR_STATE_FORWARDING)
		flags |= OFDPA_OP_FLAG_REMOVE;

	out_pport = ofdpa_port->pport;
	for (vid = 1; vid < VLAN_N_VID; vid++) {
		if (!test_bit(vid, ofdpa_port->vlan_bitmap))
			continue;
		vlan_id = htons(vid);
		pop_vlan = ofdpa_vlan_id_is_internal(vlan_id);
		err = ofdpa_group_l2_interface(ofdpa_port, flags,
					       vlan_id, out_pport, pop_vlan);
		if (err) {
			netdev_err(ofdpa_port->dev, "Error (%d) port VLAN l2 group for pport %d\n",
				   err, out_pport);
			return err;
		}
	}

	return 0;
}

static int ofdpa_port_stp_update(struct ofdpa_port *ofdpa_port,
				 int flags, u8 state)
{
	bool want[OFDPA_CTRL_MAX] = { 0, };
	bool prev_ctrls[OFDPA_CTRL_MAX];
	u8 prev_state;
	int err;
	int i;

	memcpy(prev_ctrls, ofdpa_port->ctrls, sizeof(prev_ctrls));
	prev_state = ofdpa_port->stp_state;

	if (ofdpa_port->stp_state == state)
		return 0;

	ofdpa_port->stp_state = state;

	switch (state) {
	case BR_STATE_DISABLED:
		/* port is completely disabled */
		break;
	case BR_STATE_LISTENING:
	case BR_STATE_BLOCKING:
		want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true;
		break;
	case BR_STATE_LEARNING:
	case BR_STATE_FORWARDING:
		if (!ofdpa_port_is_ovsed(ofdpa_port))
			want[OFDPA_CTRL_LINK_LOCAL_MCAST] = true;
		want[OFDPA_CTRL_IPV4_MCAST] = true;
		want[OFDPA_CTRL_IPV6_MCAST] = true;
		if (ofdpa_port_is_bridged(ofdpa_port))
			want[OFDPA_CTRL_DFLT_BRIDGING] = true;
		else if (ofdpa_port_is_ovsed(ofdpa_port))
			want[OFDPA_CTRL_DFLT_OVS] = true;
		else
			want[OFDPA_CTRL_LOCAL_ARP] = true;
		break;
	}

	for (i = 0; i < OFDPA_CTRL_MAX; i++) {
		if (want[i] != ofdpa_port->ctrls[i]) {
			int ctrl_flags = flags |
					 (want[i] ? 0 : OFDPA_OP_FLAG_REMOVE);
			err = ofdpa_port_ctrl(ofdpa_port, ctrl_flags,
					      &ofdpa_ctrls[i]);
			if (err)
				goto err_port_ctrl;
			ofdpa_port->ctrls[i] = want[i];
		}
	}

	err = ofdpa_port_fdb_flush(ofdpa_port, flags);
	if (err)
		goto err_fdb_flush;

	err = ofdpa_port_fwding(ofdpa_port, flags);
	if (err)
		goto err_port_fwding;

	return 0;

err_port_ctrl:
err_fdb_flush:
err_port_fwding:
	memcpy(ofdpa_port->ctrls, prev_ctrls, sizeof(prev_ctrls));
	ofdpa_port->stp_state = prev_state;
	return err;
}

static int ofdpa_port_fwd_enable(struct ofdpa_port *ofdpa_port, int flags)
{
	if (ofdpa_port_is_bridged(ofdpa_port))
		/* bridge STP will enable port */
		return 0;

	/* port is not bridged, so simulate going to FORWARDING state */
	return ofdpa_port_stp_update(ofdpa_port, flags,
				     BR_STATE_FORWARDING);
}

static int ofdpa_port_fwd_disable(struct ofdpa_port *ofdpa_port, int flags)
{
	if (ofdpa_port_is_bridged(ofdpa_port))
		/* bridge STP will disable port */
		return 0;

	/* port is not bridged, so simulate going to DISABLED state */
	return ofdpa_port_stp_update(ofdpa_port, flags,
				     BR_STATE_DISABLED);
}

static int ofdpa_port_vlan_add(struct ofdpa_port *ofdpa_port,
			       u16 vid, u16 flags)
{
	int err;

	/* XXX deal with flags for PVID and untagged */

	err = ofdpa_port_vlan(ofdpa_port, 0, vid);
	if (err)
		return err;

	err = ofdpa_port_router_mac(ofdpa_port, 0, htons(vid));
	if (err)
		ofdpa_port_vlan(ofdpa_port,
				OFDPA_OP_FLAG_REMOVE, vid);

	return err;
}

static int ofdpa_port_vlan_del(struct ofdpa_port *ofdpa_port,
			       u16 vid, u16 flags)
{
	int err;

	err = ofdpa_port_router_mac(ofdpa_port, OFDPA_OP_FLAG_REMOVE,
				    htons(vid));
	if (err)
		return err;

	return ofdpa_port_vlan(ofdpa_port, OFDPA_OP_FLAG_REMOVE,
			       vid);
}

static struct ofdpa_internal_vlan_tbl_entry *
ofdpa_internal_vlan_tbl_find(const struct ofdpa *ofdpa, int ifindex)
{
	struct ofdpa_internal_vlan_tbl_entry *found;

	hash_for_each_possible(ofdpa->internal_vlan_tbl, found,
			       entry, ifindex) {
		if (found->ifindex == ifindex)
			return found;
	}

	return NULL;
}

static __be16 ofdpa_port_internal_vlan_id_get(struct ofdpa_port *ofdpa_port,
					      int ifindex)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_internal_vlan_tbl_entry *entry;
	struct ofdpa_internal_vlan_tbl_entry *found;
	unsigned long lock_flags;
	int i;

	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
	if (!entry)
		return 0;

	entry->ifindex = ifindex;

	spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags);

	found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex);
	if (found) {
		kfree(entry);
		goto found;
	}

	found = entry;
	hash_add(ofdpa->internal_vlan_tbl, &found->entry, found->ifindex);

	for (i = 0; i < OFDPA_N_INTERNAL_VLANS; i++) {
		if (test_and_set_bit(i, ofdpa->internal_vlan_bitmap))
			continue;
		found->vlan_id = htons(OFDPA_INTERNAL_VLAN_ID_BASE + i);
		goto found;
	}

	netdev_err(ofdpa_port->dev, "Out of internal VLAN IDs\n");

found:
	found->ref_count++;
	spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags);

	return found->vlan_id;
}

static int ofdpa_port_fib_ipv4(struct ofdpa_port *ofdpa_port,  __be32 dst,
			       int dst_len, struct fib_info *fi, u32 tb_id,
			       int flags)
{
	const struct fib_nh *nh;
	__be16 eth_type = htons(ETH_P_IP);
	__be32 dst_mask = inet_make_mask(dst_len);
	__be16 internal_vlan_id = ofdpa_port->internal_vlan_id;
	u32 priority = fi->fib_priority;
	enum rocker_of_dpa_table_id goto_tbl =
		ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
	u32 group_id;
	bool nh_on_port;
	bool has_gw;
	u32 index;
	int err;

	/* XXX support ECMP */

	nh = fib_info_nh(fi, 0);
	nh_on_port = (nh->fib_nh_dev == ofdpa_port->dev);
	has_gw = !!nh->fib_nh_gw4;

	if (has_gw && nh_on_port) {
		err = ofdpa_port_ipv4_nh(ofdpa_port, flags,
					 nh->fib_nh_gw4, &index);
		if (err)
			return err;

		group_id = ROCKER_GROUP_L3_UNICAST(index);
	} else {
		/* Send to CPU for processing */
		group_id = ROCKER_GROUP_L2_INTERFACE(internal_vlan_id, 0);
	}

	err = ofdpa_flow_tbl_ucast4_routing(ofdpa_port, eth_type, dst,
					    dst_mask, priority, goto_tbl,
					    group_id, fi, flags);
	if (err)
		netdev_err(ofdpa_port->dev, "Error (%d) IPv4 route %pI4\n",
			   err, &dst);

	return err;
}

static void
ofdpa_port_internal_vlan_id_put(const struct ofdpa_port *ofdpa_port,
				int ifindex)
{
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;
	struct ofdpa_internal_vlan_tbl_entry *found;
	unsigned long lock_flags;
	unsigned long bit;

	spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, lock_flags);

	found = ofdpa_internal_vlan_tbl_find(ofdpa, ifindex);
	if (!found) {
		netdev_err(ofdpa_port->dev,
			   "ifindex (%d) not found in internal VLAN tbl\n",
			   ifindex);
		goto not_found;
	}

	if (--found->ref_count <= 0) {
		bit = ntohs(found->vlan_id) - OFDPA_INTERNAL_VLAN_ID_BASE;
		clear_bit(bit, ofdpa->internal_vlan_bitmap);
		hash_del(&found->entry);
		kfree(found);
	}

not_found:
	spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, lock_flags);
}

/**********************************
 * Rocker world ops implementation
 **********************************/

static int ofdpa_init(struct rocker *rocker)
{
	struct ofdpa *ofdpa = rocker->wpriv;

	ofdpa->rocker = rocker;

	hash_init(ofdpa->flow_tbl);
	spin_lock_init(&ofdpa->flow_tbl_lock);

	hash_init(ofdpa->group_tbl);
	spin_lock_init(&ofdpa->group_tbl_lock);

	hash_init(ofdpa->fdb_tbl);
	spin_lock_init(&ofdpa->fdb_tbl_lock);

	hash_init(ofdpa->internal_vlan_tbl);
	spin_lock_init(&ofdpa->internal_vlan_tbl_lock);

	hash_init(ofdpa->neigh_tbl);
	spin_lock_init(&ofdpa->neigh_tbl_lock);

	timer_setup(&ofdpa->fdb_cleanup_timer, ofdpa_fdb_cleanup, 0);
	mod_timer(&ofdpa->fdb_cleanup_timer, jiffies);

	ofdpa->ageing_time = BR_DEFAULT_AGEING_TIME;

	return 0;
}

static void ofdpa_fini(struct rocker *rocker)
{
	struct ofdpa *ofdpa = rocker->wpriv;

	unsigned long flags;
	struct ofdpa_flow_tbl_entry *flow_entry;
	struct ofdpa_group_tbl_entry *group_entry;
	struct ofdpa_fdb_tbl_entry *fdb_entry;
	struct ofdpa_internal_vlan_tbl_entry *internal_vlan_entry;
	struct ofdpa_neigh_tbl_entry *neigh_entry;
	struct hlist_node *tmp;
	int bkt;

	del_timer_sync(&ofdpa->fdb_cleanup_timer);
	flush_workqueue(rocker->rocker_owq);

	spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags);
	hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry)
		hash_del(&flow_entry->entry);
	spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags);

	spin_lock_irqsave(&ofdpa->group_tbl_lock, flags);
	hash_for_each_safe(ofdpa->group_tbl, bkt, tmp, group_entry, entry)
		hash_del(&group_entry->entry);
	spin_unlock_irqrestore(&ofdpa->group_tbl_lock, flags);

	spin_lock_irqsave(&ofdpa->fdb_tbl_lock, flags);
	hash_for_each_safe(ofdpa->fdb_tbl, bkt, tmp, fdb_entry, entry)
		hash_del(&fdb_entry->entry);
	spin_unlock_irqrestore(&ofdpa->fdb_tbl_lock, flags);

	spin_lock_irqsave(&ofdpa->internal_vlan_tbl_lock, flags);
	hash_for_each_safe(ofdpa->internal_vlan_tbl, bkt,
			   tmp, internal_vlan_entry, entry)
		hash_del(&internal_vlan_entry->entry);
	spin_unlock_irqrestore(&ofdpa->internal_vlan_tbl_lock, flags);

	spin_lock_irqsave(&ofdpa->neigh_tbl_lock, flags);
	hash_for_each_safe(ofdpa->neigh_tbl, bkt, tmp, neigh_entry, entry)
		hash_del(&neigh_entry->entry);
	spin_unlock_irqrestore(&ofdpa->neigh_tbl_lock, flags);
}

static int ofdpa_port_pre_init(struct rocker_port *rocker_port)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;

	ofdpa_port->ofdpa = rocker_port->rocker->wpriv;
	ofdpa_port->rocker_port = rocker_port;
	ofdpa_port->dev = rocker_port->dev;
	ofdpa_port->pport = rocker_port->pport;
	ofdpa_port->brport_flags = BR_LEARNING;
	ofdpa_port->ageing_time = BR_DEFAULT_AGEING_TIME;
	return 0;
}

static int ofdpa_port_init(struct rocker_port *rocker_port)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	int err;

	rocker_port_set_learning(rocker_port,
				 !!(ofdpa_port->brport_flags & BR_LEARNING));

	err = ofdpa_port_ig_tbl(ofdpa_port, 0);
	if (err) {
		netdev_err(ofdpa_port->dev, "install ig port table failed\n");
		return err;
	}

	ofdpa_port->internal_vlan_id =
		ofdpa_port_internal_vlan_id_get(ofdpa_port,
						ofdpa_port->dev->ifindex);

	err = ofdpa_port_vlan_add(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
	if (err) {
		netdev_err(ofdpa_port->dev, "install untagged VLAN failed\n");
		goto err_untagged_vlan;
	}
	return 0;

err_untagged_vlan:
	ofdpa_port_ig_tbl(ofdpa_port, OFDPA_OP_FLAG_REMOVE);
	return err;
}

static void ofdpa_port_fini(struct rocker_port *rocker_port)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;

	ofdpa_port_ig_tbl(ofdpa_port, OFDPA_OP_FLAG_REMOVE);
}

static int ofdpa_port_open(struct rocker_port *rocker_port)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;

	return ofdpa_port_fwd_enable(ofdpa_port, 0);
}

static void ofdpa_port_stop(struct rocker_port *rocker_port)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;

	ofdpa_port_fwd_disable(ofdpa_port, OFDPA_OP_FLAG_NOWAIT);
}

static int ofdpa_port_attr_stp_state_set(struct rocker_port *rocker_port,
					 u8 state)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;

	return ofdpa_port_stp_update(ofdpa_port, 0, state);
}

static int ofdpa_port_attr_bridge_flags_set(struct rocker_port *rocker_port,
					    unsigned long brport_flags)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	unsigned long orig_flags;
	int err = 0;

	orig_flags = ofdpa_port->brport_flags;
	ofdpa_port->brport_flags = brport_flags;

	if ((orig_flags ^ ofdpa_port->brport_flags) & BR_LEARNING)
		err = rocker_port_set_learning(ofdpa_port->rocker_port,
					       !!(ofdpa_port->brport_flags & BR_LEARNING));

	return err;
}

static int
ofdpa_port_attr_bridge_flags_support_get(const struct rocker_port *
					 rocker_port,
					 unsigned long *
					 p_brport_flags_support)
{
	*p_brport_flags_support = BR_LEARNING;
	return 0;
}

static int
ofdpa_port_attr_bridge_ageing_time_set(struct rocker_port *rocker_port,
				       u32 ageing_time)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	struct ofdpa *ofdpa = ofdpa_port->ofdpa;

	ofdpa_port->ageing_time = clock_t_to_jiffies(ageing_time);
	if (ofdpa_port->ageing_time < ofdpa->ageing_time)
		ofdpa->ageing_time = ofdpa_port->ageing_time;
	mod_timer(&ofdpa_port->ofdpa->fdb_cleanup_timer, jiffies);

	return 0;
}

static int ofdpa_port_obj_vlan_add(struct rocker_port *rocker_port,
				   const struct switchdev_obj_port_vlan *vlan)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;

	return ofdpa_port_vlan_add(ofdpa_port, vlan->vid, vlan->flags);
}

static int ofdpa_port_obj_vlan_del(struct rocker_port *rocker_port,
				   const struct switchdev_obj_port_vlan *vlan)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;

	return ofdpa_port_vlan_del(ofdpa_port, vlan->vid, vlan->flags);
}

static int ofdpa_port_obj_fdb_add(struct rocker_port *rocker_port,
				  u16 vid, const unsigned char *addr)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	__be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, NULL);

	if (!ofdpa_port_is_bridged(ofdpa_port))
		return -EINVAL;

	return ofdpa_port_fdb(ofdpa_port, addr, vlan_id, 0);
}

static int ofdpa_port_obj_fdb_del(struct rocker_port *rocker_port,
				  u16 vid, const unsigned char *addr)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	__be16 vlan_id = ofdpa_port_vid_to_vlan(ofdpa_port, vid, NULL);
	int flags = OFDPA_OP_FLAG_REMOVE;

	if (!ofdpa_port_is_bridged(ofdpa_port))
		return -EINVAL;

	return ofdpa_port_fdb(ofdpa_port, addr, vlan_id, flags);
}

static int ofdpa_port_bridge_join(struct ofdpa_port *ofdpa_port,
				  struct net_device *bridge,
				  struct netlink_ext_ack *extack)
{
	struct net_device *dev = ofdpa_port->dev;
	int err;

	/* Port is joining bridge, so the internal VLAN for the
	 * port is going to change to the bridge internal VLAN.
	 * Let's remove untagged VLAN (vid=0) from port and
	 * re-add once internal VLAN has changed.
	 */

	err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
	if (err)
		return err;

	ofdpa_port_internal_vlan_id_put(ofdpa_port,
					ofdpa_port->dev->ifindex);
	ofdpa_port->internal_vlan_id =
		ofdpa_port_internal_vlan_id_get(ofdpa_port, bridge->ifindex);

	ofdpa_port->bridge_dev = bridge;

	err = ofdpa_port_vlan_add(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
	if (err)
		return err;

	return switchdev_bridge_port_offload(dev, dev, NULL, NULL, NULL,
					     false, extack);
}

static int ofdpa_port_bridge_leave(struct ofdpa_port *ofdpa_port)
{
	struct net_device *dev = ofdpa_port->dev;
	int err;

	switchdev_bridge_port_unoffload(dev, NULL, NULL, NULL);

	err = ofdpa_port_vlan_del(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
	if (err)
		return err;

	ofdpa_port_internal_vlan_id_put(ofdpa_port,
					ofdpa_port->bridge_dev->ifindex);
	ofdpa_port->internal_vlan_id =
		ofdpa_port_internal_vlan_id_get(ofdpa_port,
						ofdpa_port->dev->ifindex);

	ofdpa_port->bridge_dev = NULL;

	err = ofdpa_port_vlan_add(ofdpa_port, OFDPA_UNTAGGED_VID, 0);
	if (err)
		return err;

	if (ofdpa_port->dev->flags & IFF_UP)
		err = ofdpa_port_fwd_enable(ofdpa_port, 0);

	return err;
}

static int ofdpa_port_ovs_changed(struct ofdpa_port *ofdpa_port,
				  struct net_device *master)
{
	int err;

	ofdpa_port->bridge_dev = master;

	err = ofdpa_port_fwd_disable(ofdpa_port, 0);
	if (err)
		return err;
	err = ofdpa_port_fwd_enable(ofdpa_port, 0);

	return err;
}

static int ofdpa_port_master_linked(struct rocker_port *rocker_port,
				    struct net_device *master,
				    struct netlink_ext_ack *extack)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	int err = 0;

	if (netif_is_bridge_master(master))
		err = ofdpa_port_bridge_join(ofdpa_port, master, extack);
	else if (netif_is_ovs_master(master))
		err = ofdpa_port_ovs_changed(ofdpa_port, master);
	return err;
}

static int ofdpa_port_master_unlinked(struct rocker_port *rocker_port,
				      struct net_device *master)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	int err = 0;

	if (ofdpa_port_is_bridged(ofdpa_port))
		err = ofdpa_port_bridge_leave(ofdpa_port);
	else if (ofdpa_port_is_ovsed(ofdpa_port))
		err = ofdpa_port_ovs_changed(ofdpa_port, NULL);
	return err;
}

static int ofdpa_port_neigh_update(struct rocker_port *rocker_port,
				   struct neighbour *n)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	int flags = (n->nud_state & NUD_VALID ? 0 : OFDPA_OP_FLAG_REMOVE) |
						    OFDPA_OP_FLAG_NOWAIT;
	__be32 ip_addr = *(__be32 *) n->primary_key;

	return ofdpa_port_ipv4_neigh(ofdpa_port, flags, ip_addr, n->ha);
}

static int ofdpa_port_neigh_destroy(struct rocker_port *rocker_port,
				    struct neighbour *n)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	int flags = OFDPA_OP_FLAG_REMOVE | OFDPA_OP_FLAG_NOWAIT;
	__be32 ip_addr = *(__be32 *) n->primary_key;

	return ofdpa_port_ipv4_neigh(ofdpa_port, flags, ip_addr, n->ha);
}

static int ofdpa_port_ev_mac_vlan_seen(struct rocker_port *rocker_port,
				       const unsigned char *addr,
				       __be16 vlan_id)
{
	struct ofdpa_port *ofdpa_port = rocker_port->wpriv;
	int flags = OFDPA_OP_FLAG_NOWAIT | OFDPA_OP_FLAG_LEARNED;

	if (ofdpa_port->stp_state != BR_STATE_LEARNING &&
	    ofdpa_port->stp_state != BR_STATE_FORWARDING)
		return 0;

	return ofdpa_port_fdb(ofdpa_port, addr, vlan_id, flags);
}

static struct ofdpa_port *ofdpa_port_dev_lower_find(struct net_device *dev,
						    struct rocker *rocker)
{
	struct rocker_port *rocker_port;

	rocker_port = rocker_port_dev_lower_find(dev, rocker);
	return rocker_port ? rocker_port->wpriv : NULL;
}

static int ofdpa_fib4_add(struct rocker *rocker,
			  const struct fib_entry_notifier_info *fen_info)
{
	struct ofdpa *ofdpa = rocker->wpriv;
	struct ofdpa_port *ofdpa_port;
	struct fib_nh *nh;
	int err;

	if (ofdpa->fib_aborted)
		return 0;
	nh = fib_info_nh(fen_info->fi, 0);
	ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker);
	if (!ofdpa_port)
		return 0;
	err = ofdpa_port_fib_ipv4(ofdpa_port, htonl(fen_info->dst),
				  fen_info->dst_len, fen_info->fi,
				  fen_info->tb_id, 0);
	if (err)
		return err;
	nh->fib_nh_flags |= RTNH_F_OFFLOAD;
	return 0;
}

static int ofdpa_fib4_del(struct rocker *rocker,
			  const struct fib_entry_notifier_info *fen_info)
{
	struct ofdpa *ofdpa = rocker->wpriv;
	struct ofdpa_port *ofdpa_port;
	struct fib_nh *nh;

	if (ofdpa->fib_aborted)
		return 0;
	nh = fib_info_nh(fen_info->fi, 0);
	ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker);
	if (!ofdpa_port)
		return 0;
	nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
	return ofdpa_port_fib_ipv4(ofdpa_port, htonl(fen_info->dst),
				   fen_info->dst_len, fen_info->fi,
				   fen_info->tb_id, OFDPA_OP_FLAG_REMOVE);
}

static void ofdpa_fib4_abort(struct rocker *rocker)
{
	struct ofdpa *ofdpa = rocker->wpriv;
	struct ofdpa_port *ofdpa_port;
	struct ofdpa_flow_tbl_entry *flow_entry;
	struct hlist_node *tmp;
	unsigned long flags;
	int bkt;

	if (ofdpa->fib_aborted)
		return;

	spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags);
	hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry) {
		struct fib_nh *nh;

		if (flow_entry->key.tbl_id !=
		    ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING)
			continue;
		nh = fib_info_nh(flow_entry->fi, 0);
		ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker);
		if (!ofdpa_port)
			continue;
		nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
		ofdpa_flow_tbl_del(ofdpa_port,
				   OFDPA_OP_FLAG_REMOVE | OFDPA_OP_FLAG_NOWAIT,
				   flow_entry);
	}
	spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags);
	ofdpa->fib_aborted = true;
}

struct rocker_world_ops rocker_ofdpa_ops = {
	.kind = "ofdpa",
	.priv_size = sizeof(struct ofdpa),
	.port_priv_size = sizeof(struct ofdpa_port),
	.mode = ROCKER_PORT_MODE_OF_DPA,
	.init = ofdpa_init,
	.fini = ofdpa_fini,
	.port_pre_init = ofdpa_port_pre_init,
	.port_init = ofdpa_port_init,
	.port_fini = ofdpa_port_fini,
	.port_open = ofdpa_port_open,
	.port_stop = ofdpa_port_stop,
	.port_attr_stp_state_set = ofdpa_port_attr_stp_state_set,
	.port_attr_bridge_flags_set = ofdpa_port_attr_bridge_flags_set,
	.port_attr_bridge_flags_support_get = ofdpa_port_attr_bridge_flags_support_get,
	.port_attr_bridge_ageing_time_set = ofdpa_port_attr_bridge_ageing_time_set,
	.port_obj_vlan_add = ofdpa_port_obj_vlan_add,
	.port_obj_vlan_del = ofdpa_port_obj_vlan_del,
	.port_obj_fdb_add = ofdpa_port_obj_fdb_add,
	.port_obj_fdb_del = ofdpa_port_obj_fdb_del,
	.port_master_linked = ofdpa_port_master_linked,
	.port_master_unlinked = ofdpa_port_master_unlinked,
	.port_neigh_update = ofdpa_port_neigh_update,
	.port_neigh_destroy = ofdpa_port_neigh_destroy,
	.port_ev_mac_vlan_seen = ofdpa_port_ev_mac_vlan_seen,
	.fib4_add = ofdpa_fib4_add,
	.fib4_del = ofdpa_fib4_del,
	.fib4_abort = ofdpa_fib4_abort,
};
