// SPDX-License-Identifier: GPL-2.0
/*
 * RSS and Classifier helpers for Marvell PPv2 Network Controller
 *
 * Copyright (C) 2014 Marvell
 *
 * Marcin Wojtas <mw@semihalf.com>
 */

#include "mvpp2.h"
#include "mvpp2_cls.h"
#include "mvpp2_prs.h"

#define MVPP2_DEF_FLOW(_type, _id, _opts, _ri, _ri_mask)        \
{                                                               \
        .flow_type = _type,                                     \
        .flow_id = _id,                                         \
        .supported_hash_opts = _opts,                           \
        .prs_ri = {                                             \
                .ri = _ri,                                      \
                .ri_mask = _ri_mask                             \
        }                                                       \
}

static const struct mvpp2_cls_flow cls_flows[MVPP2_N_PRS_FLOWS] = {
        /* TCP over IPv4 flows, Not fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP4_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4 |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP4_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OPT |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP4_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OTHER |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* TCP over IPv4 flows, Not fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_NF_TAG,
                       MVPP22_CLS_HEK_IP4_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4 | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_NF_TAG,
                       MVPP22_CLS_HEK_IP4_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OPT | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_NF_TAG,
                       MVPP22_CLS_HEK_IP4_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OTHER | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        /* TCP over IPv4 flows, fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4 |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OPT |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OTHER |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* TCP over IPv4 flows, fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4 | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OPT | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP4, MVPP2_FL_IP4_TCP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OTHER | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        /* UDP over IPv4 flows, Not fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP4_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4 |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP4_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OPT |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP4_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OTHER |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* UDP over IPv4 flows, Not fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_NF_TAG,
                       MVPP22_CLS_HEK_IP4_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4 | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_NF_TAG,
                       MVPP22_CLS_HEK_IP4_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OPT | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_NF_TAG,
                       MVPP22_CLS_HEK_IP4_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OTHER | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        /* UDP over IPv4 flows, fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4 |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OPT |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OTHER |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* UDP over IPv4 flows, fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4 | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OPT | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP4, MVPP2_FL_IP4_UDP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OTHER | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        /* TCP over IPv6 flows, not fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP6_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6 |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP6_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6_EXT |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* TCP over IPv6 flows, not fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_NF_TAG,
                       MVPP22_CLS_HEK_IP6_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6 | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_NF_TAG,
                       MVPP22_CLS_HEK_IP6_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6_EXT | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        /* TCP over IPv6 flows, fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP6_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6 |
                       MVPP2_PRS_RI_IP_FRAG_TRUE | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP6_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6_EXT |
                       MVPP2_PRS_RI_IP_FRAG_TRUE | MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* TCP over IPv6 flows, fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP6_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6 | MVPP2_PRS_RI_IP_FRAG_TRUE |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_TCP6, MVPP2_FL_IP6_TCP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP6_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6_EXT | MVPP2_PRS_RI_IP_FRAG_TRUE |
                       MVPP2_PRS_RI_L4_TCP,
                       MVPP2_PRS_IP_MASK),

        /* UDP over IPv6 flows, not fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP6_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6 |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_NF_UNTAG,
                       MVPP22_CLS_HEK_IP6_5T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6_EXT |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* UDP over IPv6 flows, not fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_NF_TAG,
                       MVPP22_CLS_HEK_IP6_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6 | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_NF_TAG,
                       MVPP22_CLS_HEK_IP6_5T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6_EXT | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        /* UDP over IPv6 flows, fragmented, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP6_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6 |
                       MVPP2_PRS_RI_IP_FRAG_TRUE | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_FRAG_UNTAG,
                       MVPP22_CLS_HEK_IP6_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6_EXT |
                       MVPP2_PRS_RI_IP_FRAG_TRUE | MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK | MVPP2_PRS_RI_VLAN_MASK),

        /* UDP over IPv6 flows, fragmented, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP6_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6 | MVPP2_PRS_RI_IP_FRAG_TRUE |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        MVPP2_DEF_FLOW(MVPP22_FLOW_UDP6, MVPP2_FL_IP6_UDP_FRAG_TAG,
                       MVPP22_CLS_HEK_IP6_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6_EXT | MVPP2_PRS_RI_IP_FRAG_TRUE |
                       MVPP2_PRS_RI_L4_UDP,
                       MVPP2_PRS_IP_MASK),

        /* IPv4 flows, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP4, MVPP2_FL_IP4_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4,
                       MVPP2_PRS_RI_VLAN_MASK | MVPP2_PRS_RI_L3_PROTO_MASK),
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP4, MVPP2_FL_IP4_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OPT,
                       MVPP2_PRS_RI_VLAN_MASK | MVPP2_PRS_RI_L3_PROTO_MASK),
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP4, MVPP2_FL_IP4_UNTAG,
                       MVPP22_CLS_HEK_IP4_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP4_OTHER,
                       MVPP2_PRS_RI_VLAN_MASK | MVPP2_PRS_RI_L3_PROTO_MASK),

        /* IPv4 flows, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP4, MVPP2_FL_IP4_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4,
                       MVPP2_PRS_RI_L3_PROTO_MASK),
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP4, MVPP2_FL_IP4_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OPT,
                       MVPP2_PRS_RI_L3_PROTO_MASK),
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP4, MVPP2_FL_IP4_TAG,
                       MVPP22_CLS_HEK_IP4_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP4_OTHER,
                       MVPP2_PRS_RI_L3_PROTO_MASK),

        /* IPv6 flows, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP6, MVPP2_FL_IP6_UNTAG,
                       MVPP22_CLS_HEK_IP6_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6,
                       MVPP2_PRS_RI_VLAN_MASK | MVPP2_PRS_RI_L3_PROTO_MASK),
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP6, MVPP2_FL_IP6_UNTAG,
                       MVPP22_CLS_HEK_IP6_2T,
                       MVPP2_PRS_RI_VLAN_NONE | MVPP2_PRS_RI_L3_IP6,
                       MVPP2_PRS_RI_VLAN_MASK | MVPP2_PRS_RI_L3_PROTO_MASK),

        /* IPv6 flows, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP6, MVPP2_FL_IP6_TAG,
                       MVPP22_CLS_HEK_IP6_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6,
                       MVPP2_PRS_RI_L3_PROTO_MASK),
        MVPP2_DEF_FLOW(MVPP22_FLOW_IP6, MVPP2_FL_IP6_TAG,
                       MVPP22_CLS_HEK_IP6_2T | MVPP22_CLS_HEK_TAGGED,
                       MVPP2_PRS_RI_L3_IP6,
                       MVPP2_PRS_RI_L3_PROTO_MASK),

        /* Non IP flow, no vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_ETHERNET, MVPP2_FL_NON_IP_UNTAG,
                       0,
                       MVPP2_PRS_RI_VLAN_NONE,
                       MVPP2_PRS_RI_VLAN_MASK),
        /* Non IP flow, with vlan tag */
        MVPP2_DEF_FLOW(MVPP22_FLOW_ETHERNET, MVPP2_FL_NON_IP_TAG,
                       MVPP22_CLS_HEK_OPT_VLAN,
                       0, 0),
};

u32 mvpp2_cls_flow_hits(struct mvpp2 *priv, int index)
{
        mvpp2_write(priv, MVPP2_CTRS_IDX, index);

        return mvpp2_read(priv, MVPP2_CLS_FLOW_TBL_HIT_CTR);
}

void mvpp2_cls_flow_read(struct mvpp2 *priv, int index,
                         struct mvpp2_cls_flow_entry *fe)
{
        fe->index = index;
        mvpp2_write(priv, MVPP2_CLS_FLOW_INDEX_REG, index);
        fe->data[0] = mvpp2_read(priv, MVPP2_CLS_FLOW_TBL0_REG);
        fe->data[1] = mvpp2_read(priv, MVPP2_CLS_FLOW_TBL1_REG);
        fe->data[2] = mvpp2_read(priv, MVPP2_CLS_FLOW_TBL2_REG);
}

/* Update classification flow table registers */
static void mvpp2_cls_flow_write(struct mvpp2 *priv,
                                 struct mvpp2_cls_flow_entry *fe)
{
        mvpp2_write(priv, MVPP2_CLS_FLOW_INDEX_REG, fe->index);
        mvpp2_write(priv, MVPP2_CLS_FLOW_TBL0_REG, fe->data[0]);
        mvpp2_write(priv, MVPP2_CLS_FLOW_TBL1_REG, fe->data[1]);
        mvpp2_write(priv, MVPP2_CLS_FLOW_TBL2_REG, fe->data[2]);
}

u32 mvpp2_cls_lookup_hits(struct mvpp2 *priv, int index)
{
        mvpp2_write(priv, MVPP2_CTRS_IDX, index);

        return mvpp2_read(priv, MVPP2_CLS_DEC_TBL_HIT_CTR);
}

void mvpp2_cls_lookup_read(struct mvpp2 *priv, int lkpid, int way,
                           struct mvpp2_cls_lookup_entry *le)
{
        u32 val;

        val = (way << MVPP2_CLS_LKP_INDEX_WAY_OFFS) | lkpid;
        mvpp2_write(priv, MVPP2_CLS_LKP_INDEX_REG, val);
        le->way = way;
        le->lkpid = lkpid;
        le->data = mvpp2_read(priv, MVPP2_CLS_LKP_TBL_REG);
}

/* Update classification lookup table register */
static void mvpp2_cls_lookup_write(struct mvpp2 *priv,
                                   struct mvpp2_cls_lookup_entry *le)
{
        u32 val;

        val = (le->way << MVPP2_CLS_LKP_INDEX_WAY_OFFS) | le->lkpid;
        mvpp2_write(priv, MVPP2_CLS_LKP_INDEX_REG, val);
        mvpp2_write(priv, MVPP2_CLS_LKP_TBL_REG, le->data);
}

/* Operations on flow entry */
static int mvpp2_cls_flow_hek_num_get(struct mvpp2_cls_flow_entry *fe)
{
        return fe->data[1] & MVPP2_CLS_FLOW_TBL1_N_FIELDS_MASK;
}

static void mvpp2_cls_flow_hek_num_set(struct mvpp2_cls_flow_entry *fe,
                                       int num_of_fields)
{
        fe->data[1] &= ~MVPP2_CLS_FLOW_TBL1_N_FIELDS_MASK;
        fe->data[1] |= MVPP2_CLS_FLOW_TBL1_N_FIELDS(num_of_fields);
}

static int mvpp2_cls_flow_hek_get(struct mvpp2_cls_flow_entry *fe,
                                  int field_index)
{
        return (fe->data[2] >> MVPP2_CLS_FLOW_TBL2_FLD_OFFS(field_index)) &
                MVPP2_CLS_FLOW_TBL2_FLD_MASK;
}

static void mvpp2_cls_flow_hek_set(struct mvpp2_cls_flow_entry *fe,
                                   int field_index, int field_id)
{
        fe->data[2] &= ~MVPP2_CLS_FLOW_TBL2_FLD(field_index,
                                                MVPP2_CLS_FLOW_TBL2_FLD_MASK);
        fe->data[2] |= MVPP2_CLS_FLOW_TBL2_FLD(field_index, field_id);
}

static void mvpp2_cls_flow_eng_set(struct mvpp2_cls_flow_entry *fe,
                                   int engine)
{
        fe->data[0] &= ~MVPP2_CLS_FLOW_TBL0_ENG(MVPP2_CLS_FLOW_TBL0_ENG_MASK);
        fe->data[0] |= MVPP2_CLS_FLOW_TBL0_ENG(engine);
}

int mvpp2_cls_flow_eng_get(struct mvpp2_cls_flow_entry *fe)
{
        return (fe->data[0] >> MVPP2_CLS_FLOW_TBL0_OFFS) &
                MVPP2_CLS_FLOW_TBL0_ENG_MASK;
}

static void mvpp2_cls_flow_port_id_sel(struct mvpp2_cls_flow_entry *fe,
                                       bool from_packet)
{
        if (from_packet)
                fe->data[0] |= MVPP2_CLS_FLOW_TBL0_PORT_ID_SEL;
        else
                fe->data[0] &= ~MVPP2_CLS_FLOW_TBL0_PORT_ID_SEL;
}

static void mvpp2_cls_flow_last_set(struct mvpp2_cls_flow_entry *fe,
                                    bool is_last)
{
        fe->data[0] &= ~MVPP2_CLS_FLOW_TBL0_LAST;
        fe->data[0] |= !!is_last;
}

static void mvpp2_cls_flow_pri_set(struct mvpp2_cls_flow_entry *fe, int prio)
{
        fe->data[1] &= ~MVPP2_CLS_FLOW_TBL1_PRIO(MVPP2_CLS_FLOW_TBL1_PRIO_MASK);
        fe->data[1] |= MVPP2_CLS_FLOW_TBL1_PRIO(prio);
}

static void mvpp2_cls_flow_port_add(struct mvpp2_cls_flow_entry *fe,
                                    u32 port)
{
        fe->data[0] |= MVPP2_CLS_FLOW_TBL0_PORT_ID(port);
}

static void mvpp2_cls_flow_port_remove(struct mvpp2_cls_flow_entry *fe,
                                       u32 port)
{
        fe->data[0] &= ~MVPP2_CLS_FLOW_TBL0_PORT_ID(port);
}

static void mvpp2_cls_flow_lu_type_set(struct mvpp2_cls_flow_entry *fe,
                                       u8 lu_type)
{
        fe->data[1] &= ~MVPP2_CLS_FLOW_TBL1_LU_TYPE(MVPP2_CLS_LU_TYPE_MASK);
        fe->data[1] |= MVPP2_CLS_FLOW_TBL1_LU_TYPE(lu_type);
}

/* Initialize the parser entry for the given flow */
static void mvpp2_cls_flow_prs_init(struct mvpp2 *priv,
                                    const struct mvpp2_cls_flow *flow)
{
        mvpp2_prs_add_flow(priv, flow->flow_id, flow->prs_ri.ri,
                           flow->prs_ri.ri_mask);
}

/* Initialize the Lookup Id table entry for the given flow */
static void mvpp2_cls_flow_lkp_init(struct mvpp2 *priv,
                                    const struct mvpp2_cls_flow *flow)
{
        struct mvpp2_cls_lookup_entry le;

        le.way = 0;
        le.lkpid = flow->flow_id;

        /* The default RxQ for this port is set in the C2 lookup */
        le.data = 0;

        /* We point on the first lookup in the sequence for the flow, that is
         * the C2 lookup.
         */
        le.data |= MVPP2_CLS_LKP_FLOW_PTR(MVPP2_CLS_FLT_FIRST(flow->flow_id));

        /* CLS is always enabled, RSS is enabled/disabled in C2 lookup */
        le.data |= MVPP2_CLS_LKP_TBL_LOOKUP_EN_MASK;

        mvpp2_cls_lookup_write(priv, &le);
}

static void mvpp2_cls_c2_write(struct mvpp2 *priv,
                               struct mvpp2_cls_c2_entry *c2)
{
        u32 val;
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_IDX, c2->index);

        val = mvpp2_read(priv, MVPP22_CLS_C2_TCAM_INV);
        if (c2->valid)
                val &= ~MVPP22_CLS_C2_TCAM_INV_BIT;
        else
                val |= MVPP22_CLS_C2_TCAM_INV_BIT;
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_INV, val);

        mvpp2_write(priv, MVPP22_CLS_C2_ACT, c2->act);

        mvpp2_write(priv, MVPP22_CLS_C2_ATTR0, c2->attr[0]);
        mvpp2_write(priv, MVPP22_CLS_C2_ATTR1, c2->attr[1]);
        mvpp2_write(priv, MVPP22_CLS_C2_ATTR2, c2->attr[2]);
        mvpp2_write(priv, MVPP22_CLS_C2_ATTR3, c2->attr[3]);

        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_DATA0, c2->tcam[0]);
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_DATA1, c2->tcam[1]);
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_DATA2, c2->tcam[2]);
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_DATA3, c2->tcam[3]);
        /* Writing TCAM_DATA4 flushes writes to TCAM_DATA0-4 and INV to HW */
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_DATA4, c2->tcam[4]);
}

void mvpp2_cls_c2_read(struct mvpp2 *priv, int index,
                       struct mvpp2_cls_c2_entry *c2)
{
        u32 val;
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_IDX, index);

        c2->index = index;

        c2->tcam[0] = mvpp2_read(priv, MVPP22_CLS_C2_TCAM_DATA0);
        c2->tcam[1] = mvpp2_read(priv, MVPP22_CLS_C2_TCAM_DATA1);
        c2->tcam[2] = mvpp2_read(priv, MVPP22_CLS_C2_TCAM_DATA2);
        c2->tcam[3] = mvpp2_read(priv, MVPP22_CLS_C2_TCAM_DATA3);
        c2->tcam[4] = mvpp2_read(priv, MVPP22_CLS_C2_TCAM_DATA4);

        c2->act = mvpp2_read(priv, MVPP22_CLS_C2_ACT);

        c2->attr[0] = mvpp2_read(priv, MVPP22_CLS_C2_ATTR0);
        c2->attr[1] = mvpp2_read(priv, MVPP22_CLS_C2_ATTR1);
        c2->attr[2] = mvpp2_read(priv, MVPP22_CLS_C2_ATTR2);
        c2->attr[3] = mvpp2_read(priv, MVPP22_CLS_C2_ATTR3);

        val = mvpp2_read(priv, MVPP22_CLS_C2_TCAM_INV);
        c2->valid = !(val & MVPP22_CLS_C2_TCAM_INV_BIT);
}

static int mvpp2_cls_ethtool_flow_to_type(int flow_type)
{
        switch (flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
        case ETHER_FLOW:
                return MVPP22_FLOW_ETHERNET;
        case TCP_V4_FLOW:
                return MVPP22_FLOW_TCP4;
        case TCP_V6_FLOW:
                return MVPP22_FLOW_TCP6;
        case UDP_V4_FLOW:
                return MVPP22_FLOW_UDP4;
        case UDP_V6_FLOW:
                return MVPP22_FLOW_UDP6;
        case IPV4_FLOW:
                return MVPP22_FLOW_IP4;
        case IPV6_FLOW:
                return MVPP22_FLOW_IP6;
        default:
                return -EOPNOTSUPP;
        }
}

static int mvpp2_cls_c2_port_flow_index(struct mvpp2_port *port, int loc)
{
        return MVPP22_CLS_C2_RFS_LOC(port->id, loc);
}

/* Initialize the flow table entries for the given flow */
static void mvpp2_cls_flow_init(struct mvpp2 *priv,
                                const struct mvpp2_cls_flow *flow)
{
        struct mvpp2_cls_flow_entry fe;
        int i, pri = 0;

        /* Assign default values to all entries in the flow */
        for (i = MVPP2_CLS_FLT_FIRST(flow->flow_id);
             i <= MVPP2_CLS_FLT_LAST(flow->flow_id); i++) {
                memset(&fe, 0, sizeof(fe));
                fe.index = i;
                mvpp2_cls_flow_pri_set(&fe, pri++);

                if (i == MVPP2_CLS_FLT_LAST(flow->flow_id))
                        mvpp2_cls_flow_last_set(&fe, 1);

                mvpp2_cls_flow_write(priv, &fe);
        }

        /* RSS config C2 lookup */
        mvpp2_cls_flow_read(priv, MVPP2_CLS_FLT_C2_RSS_ENTRY(flow->flow_id),
                            &fe);

        mvpp2_cls_flow_eng_set(&fe, MVPP22_CLS_ENGINE_C2);
        mvpp2_cls_flow_port_id_sel(&fe, true);
        mvpp2_cls_flow_lu_type_set(&fe, MVPP22_CLS_LU_TYPE_ALL);

        /* Add all ports */
        for (i = 0; i < MVPP2_MAX_PORTS; i++)
                mvpp2_cls_flow_port_add(&fe, BIT(i));

        mvpp2_cls_flow_write(priv, &fe);

        /* C3Hx lookups */
        for (i = 0; i < MVPP2_MAX_PORTS; i++) {
                mvpp2_cls_flow_read(priv,
                                    MVPP2_CLS_FLT_HASH_ENTRY(i, flow->flow_id),
                                    &fe);

                /* Set a default engine. Will be overwritten when setting the
                 * real HEK parameters
                 */
                mvpp2_cls_flow_eng_set(&fe, MVPP22_CLS_ENGINE_C3HA);
                mvpp2_cls_flow_port_id_sel(&fe, true);
                mvpp2_cls_flow_port_add(&fe, BIT(i));

                mvpp2_cls_flow_write(priv, &fe);
        }
}

/* Adds a field to the Header Extracted Key generation parameters*/
static int mvpp2_flow_add_hek_field(struct mvpp2_cls_flow_entry *fe,
                                    u32 field_id)
{
        int nb_fields = mvpp2_cls_flow_hek_num_get(fe);

        if (nb_fields == MVPP2_FLOW_N_FIELDS)
                return -EINVAL;

        mvpp2_cls_flow_hek_set(fe, nb_fields, field_id);

        mvpp2_cls_flow_hek_num_set(fe, nb_fields + 1);

        return 0;
}

static int mvpp2_flow_set_hek_fields(struct mvpp2_cls_flow_entry *fe,
                                     unsigned long hash_opts)
{
        u32 field_id;
        int i;

        /* Clear old fields */
        mvpp2_cls_flow_hek_num_set(fe, 0);
        fe->data[2] = 0;

        for_each_set_bit(i, &hash_opts, MVPP22_CLS_HEK_N_FIELDS) {
                switch (BIT(i)) {
                case MVPP22_CLS_HEK_OPT_MAC_DA:
                        field_id = MVPP22_CLS_FIELD_MAC_DA;
                        break;
                case MVPP22_CLS_HEK_OPT_VLAN:
                        field_id = MVPP22_CLS_FIELD_VLAN;
                        break;
                case MVPP22_CLS_HEK_OPT_VLAN_PRI:
                        field_id = MVPP22_CLS_FIELD_VLAN_PRI;
                        break;
                case MVPP22_CLS_HEK_OPT_IP4SA:
                        field_id = MVPP22_CLS_FIELD_IP4SA;
                        break;
                case MVPP22_CLS_HEK_OPT_IP4DA:
                        field_id = MVPP22_CLS_FIELD_IP4DA;
                        break;
                case MVPP22_CLS_HEK_OPT_IP6SA:
                        field_id = MVPP22_CLS_FIELD_IP6SA;
                        break;
                case MVPP22_CLS_HEK_OPT_IP6DA:
                        field_id = MVPP22_CLS_FIELD_IP6DA;
                        break;
                case MVPP22_CLS_HEK_OPT_L4SIP:
                        field_id = MVPP22_CLS_FIELD_L4SIP;
                        break;
                case MVPP22_CLS_HEK_OPT_L4DIP:
                        field_id = MVPP22_CLS_FIELD_L4DIP;
                        break;
                default:
                        return -EINVAL;
                }
                if (mvpp2_flow_add_hek_field(fe, field_id))
                        return -EINVAL;
        }

        return 0;
}

/* Returns the size, in bits, of the corresponding HEK field */
static int mvpp2_cls_hek_field_size(u32 field)
{
        switch (field) {
        case MVPP22_CLS_HEK_OPT_MAC_DA:
                return 48;
        case MVPP22_CLS_HEK_OPT_VLAN:
                return 12;
        case MVPP22_CLS_HEK_OPT_VLAN_PRI:
                return 3;
        case MVPP22_CLS_HEK_OPT_IP4SA:
        case MVPP22_CLS_HEK_OPT_IP4DA:
                return 32;
        case MVPP22_CLS_HEK_OPT_IP6SA:
        case MVPP22_CLS_HEK_OPT_IP6DA:
                return 128;
        case MVPP22_CLS_HEK_OPT_L4SIP:
        case MVPP22_CLS_HEK_OPT_L4DIP:
                return 16;
        default:
                return -1;
        }
}

const struct mvpp2_cls_flow *mvpp2_cls_flow_get(int flow)
{
        if (flow >= MVPP2_N_PRS_FLOWS)
                return NULL;

        return &cls_flows[flow];
}

/* Set the hash generation options for the given traffic flow.
 * One traffic flow (in the ethtool sense) has multiple classification flows,
 * to handle specific cases such as fragmentation, or the presence of a
 * VLAN / DSA Tag.
 *
 * Each of these individual flows has different constraints, for example we
 * can't hash fragmented packets on L4 data (else we would risk having packet
 * re-ordering), so each classification flows masks the options with their
 * supported ones.
 *
 */
static int mvpp2_port_rss_hash_opts_set(struct mvpp2_port *port, int flow_type,
                                        u16 requested_opts)
{
        const struct mvpp2_cls_flow *flow;
        struct mvpp2_cls_flow_entry fe;
        int i, engine, flow_index;
        u16 hash_opts;

        for_each_cls_flow_id_with_type(i, flow_type) {
                flow = mvpp2_cls_flow_get(i);
                if (!flow)
                        return -EINVAL;

                flow_index = MVPP2_CLS_FLT_HASH_ENTRY(port->id, flow->flow_id);

                mvpp2_cls_flow_read(port->priv, flow_index, &fe);

                hash_opts = flow->supported_hash_opts & requested_opts;

                /* Use C3HB engine to access L4 infos. This adds L4 infos to the
                 * hash parameters
                 */
                if (hash_opts & MVPP22_CLS_HEK_L4_OPTS)
                        engine = MVPP22_CLS_ENGINE_C3HB;
                else
                        engine = MVPP22_CLS_ENGINE_C3HA;

                if (mvpp2_flow_set_hek_fields(&fe, hash_opts))
                        return -EINVAL;

                mvpp2_cls_flow_eng_set(&fe, engine);

                mvpp2_cls_flow_write(port->priv, &fe);
        }

        return 0;
}

u16 mvpp2_flow_get_hek_fields(struct mvpp2_cls_flow_entry *fe)
{
        u16 hash_opts = 0;
        int n_fields, i, field;

        n_fields = mvpp2_cls_flow_hek_num_get(fe);

        for (i = 0; i < n_fields; i++) {
                field = mvpp2_cls_flow_hek_get(fe, i);

                switch (field) {
                case MVPP22_CLS_FIELD_MAC_DA:
                        hash_opts |= MVPP22_CLS_HEK_OPT_MAC_DA;
                        break;
                case MVPP22_CLS_FIELD_VLAN:
                        hash_opts |= MVPP22_CLS_HEK_OPT_VLAN;
                        break;
                case MVPP22_CLS_FIELD_VLAN_PRI:
                        hash_opts |= MVPP22_CLS_HEK_OPT_VLAN_PRI;
                        break;
                case MVPP22_CLS_FIELD_L3_PROTO:
                        hash_opts |= MVPP22_CLS_HEK_OPT_L3_PROTO;
                        break;
                case MVPP22_CLS_FIELD_IP4SA:
                        hash_opts |= MVPP22_CLS_HEK_OPT_IP4SA;
                        break;
                case MVPP22_CLS_FIELD_IP4DA:
                        hash_opts |= MVPP22_CLS_HEK_OPT_IP4DA;
                        break;
                case MVPP22_CLS_FIELD_IP6SA:
                        hash_opts |= MVPP22_CLS_HEK_OPT_IP6SA;
                        break;
                case MVPP22_CLS_FIELD_IP6DA:
                        hash_opts |= MVPP22_CLS_HEK_OPT_IP6DA;
                        break;
                case MVPP22_CLS_FIELD_L4SIP:
                        hash_opts |= MVPP22_CLS_HEK_OPT_L4SIP;
                        break;
                case MVPP22_CLS_FIELD_L4DIP:
                        hash_opts |= MVPP22_CLS_HEK_OPT_L4DIP;
                        break;
                default:
                        break;
                }
        }
        return hash_opts;
}

/* Returns the hash opts for this flow. There are several classifier flows
 * for one traffic flow, this returns an aggregation of all configurations.
 */
static u16 mvpp2_port_rss_hash_opts_get(struct mvpp2_port *port, int flow_type)
{
        const struct mvpp2_cls_flow *flow;
        struct mvpp2_cls_flow_entry fe;
        int i, flow_index;
        u16 hash_opts = 0;

        for_each_cls_flow_id_with_type(i, flow_type) {
                flow = mvpp2_cls_flow_get(i);
                if (!flow)
                        return 0;

                flow_index = MVPP2_CLS_FLT_HASH_ENTRY(port->id, flow->flow_id);

                mvpp2_cls_flow_read(port->priv, flow_index, &fe);

                hash_opts |= mvpp2_flow_get_hek_fields(&fe);
        }

        return hash_opts;
}

static void mvpp2_cls_port_init_flows(struct mvpp2 *priv)
{
        const struct mvpp2_cls_flow *flow;
        int i;

        for (i = 0; i < MVPP2_N_PRS_FLOWS; i++) {
                flow = mvpp2_cls_flow_get(i);
                if (!flow)
                        break;

                mvpp2_cls_flow_prs_init(priv, flow);
                mvpp2_cls_flow_lkp_init(priv, flow);
                mvpp2_cls_flow_init(priv, flow);
        }
}

static void mvpp2_port_c2_cls_init(struct mvpp2_port *port)
{
        struct mvpp2_cls_c2_entry c2;
        u8 qh, ql, pmap;

        memset(&c2, 0, sizeof(c2));

        c2.index = MVPP22_CLS_C2_RSS_ENTRY(port->id);

        pmap = BIT(port->id);
        c2.tcam[4] = MVPP22_CLS_C2_PORT_ID(pmap);
        c2.tcam[4] |= MVPP22_CLS_C2_TCAM_EN(MVPP22_CLS_C2_PORT_ID(pmap));

        /* Match on Lookup Type */
        c2.tcam[4] |= MVPP22_CLS_C2_TCAM_EN(MVPP22_CLS_C2_LU_TYPE(MVPP2_CLS_LU_TYPE_MASK));
        c2.tcam[4] |= MVPP22_CLS_C2_LU_TYPE(MVPP22_CLS_LU_TYPE_ALL);

        /* Update RSS status after matching this entry */
        c2.act = MVPP22_CLS_C2_ACT_RSS_EN(MVPP22_C2_UPD_LOCK);

        /* Mark packet as "forwarded to software", needed for RSS */
        c2.act |= MVPP22_CLS_C2_ACT_FWD(MVPP22_C2_FWD_SW_LOCK);

        /* Configure the default rx queue : Update Queue Low and Queue High, but
         * don't lock, since the rx queue selection might be overridden by RSS
         */
        c2.act |= MVPP22_CLS_C2_ACT_QHIGH(MVPP22_C2_UPD) |
                   MVPP22_CLS_C2_ACT_QLOW(MVPP22_C2_UPD);

        qh = (port->first_rxq >> 3) & MVPP22_CLS_C2_ATTR0_QHIGH_MASK;
        ql = port->first_rxq & MVPP22_CLS_C2_ATTR0_QLOW_MASK;

        c2.attr[0] = MVPP22_CLS_C2_ATTR0_QHIGH(qh) |
                      MVPP22_CLS_C2_ATTR0_QLOW(ql);

        c2.valid = true;

        mvpp2_cls_c2_write(port->priv, &c2);
}

/* Classifier default initialization */
void mvpp2_cls_init(struct mvpp2 *priv)
{
        struct mvpp2_cls_lookup_entry le;
        struct mvpp2_cls_flow_entry fe;
        struct mvpp2_cls_c2_entry c2;
        int index;

        /* Enable classifier */
        mvpp2_write(priv, MVPP2_CLS_MODE_REG, MVPP2_CLS_MODE_ACTIVE_MASK);

        /* Clear classifier flow table */
        memset(&fe.data, 0, sizeof(fe.data));
        for (index = 0; index < MVPP2_CLS_FLOWS_TBL_SIZE; index++) {
                fe.index = index;
                mvpp2_cls_flow_write(priv, &fe);
        }

        /* Clear classifier lookup table */
        le.data = 0;
        for (index = 0; index < MVPP2_CLS_LKP_TBL_SIZE; index++) {
                le.lkpid = index;
                le.way = 0;
                mvpp2_cls_lookup_write(priv, &le);

                le.way = 1;
                mvpp2_cls_lookup_write(priv, &le);
        }

        /* Clear C2 TCAM engine table */
        memset(&c2, 0, sizeof(c2));
        c2.valid = false;
        for (index = 0; index < MVPP22_CLS_C2_N_ENTRIES; index++) {
                c2.index = index;
                mvpp2_cls_c2_write(priv, &c2);
        }

        /* Disable the FIFO stages in C2 engine, which are only used in BIST
         * mode
         */
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_CTRL,
                    MVPP22_CLS_C2_TCAM_BYPASS_FIFO);

        mvpp2_cls_port_init_flows(priv);
}

void mvpp2_cls_port_config(struct mvpp2_port *port)
{
        struct mvpp2_cls_lookup_entry le;
        u32 val;

        /* Set way for the port */
        val = mvpp2_read(port->priv, MVPP2_CLS_PORT_WAY_REG);
        val &= ~MVPP2_CLS_PORT_WAY_MASK(port->id);
        mvpp2_write(port->priv, MVPP2_CLS_PORT_WAY_REG, val);

        /* Pick the entry to be accessed in lookup ID decoding table
         * according to the way and lkpid.
         */
        le.lkpid = port->id;
        le.way = 0;
        le.data = 0;

        /* Set initial CPU queue for receiving packets */
        le.data &= ~MVPP2_CLS_LKP_TBL_RXQ_MASK;
        le.data |= port->first_rxq;

        /* Disable classification engines */
        le.data &= ~MVPP2_CLS_LKP_TBL_LOOKUP_EN_MASK;

        /* Update lookup ID table entry */
        mvpp2_cls_lookup_write(port->priv, &le);

        mvpp2_port_c2_cls_init(port);
}

u32 mvpp2_cls_c2_hit_count(struct mvpp2 *priv, int c2_index)
{
        mvpp2_write(priv, MVPP22_CLS_C2_TCAM_IDX, c2_index);

        return mvpp2_read(priv, MVPP22_CLS_C2_HIT_CTR);
}

static void mvpp2_rss_port_c2_enable(struct mvpp2_port *port, u32 ctx)
{
        struct mvpp2_cls_c2_entry c2;
        u8 qh, ql;

        mvpp2_cls_c2_read(port->priv, MVPP22_CLS_C2_RSS_ENTRY(port->id), &c2);

        /* The RxQ number is used to select the RSS table. It that case, we set
         * it to be the ctx number.
         */
        qh = (ctx >> 3) & MVPP22_CLS_C2_ATTR0_QHIGH_MASK;
        ql = ctx & MVPP22_CLS_C2_ATTR0_QLOW_MASK;

        c2.attr[0] = MVPP22_CLS_C2_ATTR0_QHIGH(qh) |
                     MVPP22_CLS_C2_ATTR0_QLOW(ql);

        c2.attr[2] |= MVPP22_CLS_C2_ATTR2_RSS_EN;

        mvpp2_cls_c2_write(port->priv, &c2);
}

static void mvpp2_rss_port_c2_disable(struct mvpp2_port *port)
{
        struct mvpp2_cls_c2_entry c2;
        u8 qh, ql;

        mvpp2_cls_c2_read(port->priv, MVPP22_CLS_C2_RSS_ENTRY(port->id), &c2);

        /* Reset the default destination RxQ to the port's first rx queue. */
        qh = (port->first_rxq >> 3) & MVPP22_CLS_C2_ATTR0_QHIGH_MASK;
        ql = port->first_rxq & MVPP22_CLS_C2_ATTR0_QLOW_MASK;

        c2.attr[0] = MVPP22_CLS_C2_ATTR0_QHIGH(qh) |
                      MVPP22_CLS_C2_ATTR0_QLOW(ql);

        c2.attr[2] &= ~MVPP22_CLS_C2_ATTR2_RSS_EN;

        mvpp2_cls_c2_write(port->priv, &c2);
}

static inline int mvpp22_rss_ctx(struct mvpp2_port *port, int port_rss_ctx)
{
        return port->rss_ctx[port_rss_ctx];
}

int mvpp22_port_rss_enable(struct mvpp2_port *port)
{
        if (mvpp22_rss_ctx(port, 0) < 0)
                return -EINVAL;

        mvpp2_rss_port_c2_enable(port, mvpp22_rss_ctx(port, 0));

        return 0;
}

int mvpp22_port_rss_disable(struct mvpp2_port *port)
{
        if (mvpp22_rss_ctx(port, 0) < 0)
                return -EINVAL;

        mvpp2_rss_port_c2_disable(port);

        return 0;
}

static void mvpp22_port_c2_lookup_disable(struct mvpp2_port *port, int entry)
{
        struct mvpp2_cls_c2_entry c2;

        mvpp2_cls_c2_read(port->priv, entry, &c2);

        /* Clear the port map so that the entry doesn't match anymore */
        c2.tcam[4] &= ~(MVPP22_CLS_C2_PORT_ID(BIT(port->id)));

        mvpp2_cls_c2_write(port->priv, &c2);
}

/* Set CPU queue number for oversize packets */
void mvpp2_cls_oversize_rxq_set(struct mvpp2_port *port)
{
        u32 val;

        mvpp2_write(port->priv, MVPP2_CLS_OVERSIZE_RXQ_LOW_REG(port->id),
                    port->first_rxq & MVPP2_CLS_OVERSIZE_RXQ_LOW_MASK);

        mvpp2_write(port->priv, MVPP2_CLS_SWFWD_P2HQ_REG(port->id),
                    (port->first_rxq >> MVPP2_CLS_OVERSIZE_RXQ_LOW_BITS));

        val = mvpp2_read(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG);
        val &= ~MVPP2_CLS_SWFWD_PCTRL_MASK(port->id);
        mvpp2_write(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG, val);
}

static int mvpp2_port_c2_tcam_rule_add(struct mvpp2_port *port,
                                       struct mvpp2_rfs_rule *rule)
{
        struct flow_action_entry *act;
        struct mvpp2_cls_c2_entry c2;
        u8 qh, ql, pmap;
        int index, ctx;

        if (!flow_action_basic_hw_stats_check(&rule->flow->action, NULL))
                return -EOPNOTSUPP;

        memset(&c2, 0, sizeof(c2));

        index = mvpp2_cls_c2_port_flow_index(port, rule->loc);
        if (index < 0)
                return -EINVAL;
        c2.index = index;

        act = &rule->flow->action.entries[0];

        rule->c2_index = c2.index;

        c2.tcam[3] = (rule->c2_tcam & 0xffff) |
                     ((rule->c2_tcam_mask & 0xffff) << 16);
        c2.tcam[2] = ((rule->c2_tcam >> 16) & 0xffff) |
                     (((rule->c2_tcam_mask >> 16) & 0xffff) << 16);
        c2.tcam[1] = ((rule->c2_tcam >> 32) & 0xffff) |
                     (((rule->c2_tcam_mask >> 32) & 0xffff) << 16);
        c2.tcam[0] = ((rule->c2_tcam >> 48) & 0xffff) |
                     (((rule->c2_tcam_mask >> 48) & 0xffff) << 16);

        pmap = BIT(port->id);
        c2.tcam[4] = MVPP22_CLS_C2_PORT_ID(pmap);
        c2.tcam[4] |= MVPP22_CLS_C2_TCAM_EN(MVPP22_CLS_C2_PORT_ID(pmap));

        /* Match on Lookup Type */
        c2.tcam[4] |= MVPP22_CLS_C2_TCAM_EN(MVPP22_CLS_C2_LU_TYPE(MVPP2_CLS_LU_TYPE_MASK));
        c2.tcam[4] |= MVPP22_CLS_C2_LU_TYPE(rule->loc);

        if (act->id == FLOW_ACTION_DROP) {
                c2.act = MVPP22_CLS_C2_ACT_COLOR(MVPP22_C2_COL_RED_LOCK);
        } else {
                /* We want to keep the default color derived from the Header
                 * Parser drop entries, for VLAN and MAC filtering. This will
                 * assign a default color of Green or Red, and we want matches
                 * with a non-drop action to keep that color.
                 */
                c2.act = MVPP22_CLS_C2_ACT_COLOR(MVPP22_C2_COL_NO_UPD_LOCK);

                /* Update RSS status after matching this entry */
                if (act->queue.ctx)
                        c2.attr[2] |= MVPP22_CLS_C2_ATTR2_RSS_EN;

                /* Always lock the RSS_EN decision. We might have high prio
                 * rules steering to an RXQ, and a lower one steering to RSS,
                 * we don't want the low prio RSS rule overwriting this flag.
                 */
                c2.act = MVPP22_CLS_C2_ACT_RSS_EN(MVPP22_C2_UPD_LOCK);

                /* Mark packet as "forwarded to software", needed for RSS */
                c2.act |= MVPP22_CLS_C2_ACT_FWD(MVPP22_C2_FWD_SW_LOCK);

                c2.act |= MVPP22_CLS_C2_ACT_QHIGH(MVPP22_C2_UPD_LOCK) |
                           MVPP22_CLS_C2_ACT_QLOW(MVPP22_C2_UPD_LOCK);

                if (act->queue.ctx) {
                        /* Get the global ctx number */
                        ctx = mvpp22_rss_ctx(port, act->queue.ctx);
                        if (ctx < 0)
                                return -EINVAL;

                        qh = (ctx >> 3) & MVPP22_CLS_C2_ATTR0_QHIGH_MASK;
                        ql = ctx & MVPP22_CLS_C2_ATTR0_QLOW_MASK;
                } else {
                        qh = ((act->queue.index + port->first_rxq) >> 3) &
                              MVPP22_CLS_C2_ATTR0_QHIGH_MASK;
                        ql = (act->queue.index + port->first_rxq) &
                              MVPP22_CLS_C2_ATTR0_QLOW_MASK;
                }

                c2.attr[0] = MVPP22_CLS_C2_ATTR0_QHIGH(qh) |
                              MVPP22_CLS_C2_ATTR0_QLOW(ql);
        }

        c2.valid = true;

        mvpp2_cls_c2_write(port->priv, &c2);

        return 0;
}

static int mvpp2_port_c2_rfs_rule_insert(struct mvpp2_port *port,
                                         struct mvpp2_rfs_rule *rule)
{
        return mvpp2_port_c2_tcam_rule_add(port, rule);
}

static int mvpp2_port_cls_rfs_rule_remove(struct mvpp2_port *port,
                                          struct mvpp2_rfs_rule *rule)
{
        const struct mvpp2_cls_flow *flow;
        struct mvpp2_cls_flow_entry fe;
        int index, i;

        for_each_cls_flow_id_containing_type(i, rule->flow_type) {
                flow = mvpp2_cls_flow_get(i);
                if (!flow)
                        return 0;

                index = MVPP2_CLS_FLT_C2_RFS(port->id, flow->flow_id, rule->loc);

                mvpp2_cls_flow_read(port->priv, index, &fe);
                mvpp2_cls_flow_port_remove(&fe, BIT(port->id));
                mvpp2_cls_flow_write(port->priv, &fe);
        }

        if (rule->c2_index >= 0)
                mvpp22_port_c2_lookup_disable(port, rule->c2_index);

        return 0;
}

static int mvpp2_port_flt_rfs_rule_insert(struct mvpp2_port *port,
                                          struct mvpp2_rfs_rule *rule)
{
        const struct mvpp2_cls_flow *flow;
        struct mvpp2 *priv = port->priv;
        struct mvpp2_cls_flow_entry fe;
        int index, ret, i;

        if (rule->engine != MVPP22_CLS_ENGINE_C2)
                return -EOPNOTSUPP;

        ret = mvpp2_port_c2_rfs_rule_insert(port, rule);
        if (ret)
                return ret;

        for_each_cls_flow_id_containing_type(i, rule->flow_type) {
                flow = mvpp2_cls_flow_get(i);
                if (!flow)
                        return 0;

                if ((rule->hek_fields & flow->supported_hash_opts) != rule->hek_fields)
                        continue;

                index = MVPP2_CLS_FLT_C2_RFS(port->id, flow->flow_id, rule->loc);

                mvpp2_cls_flow_read(priv, index, &fe);
                mvpp2_cls_flow_eng_set(&fe, rule->engine);
                mvpp2_cls_flow_port_id_sel(&fe, true);
                mvpp2_flow_set_hek_fields(&fe, rule->hek_fields);
                mvpp2_cls_flow_lu_type_set(&fe, rule->loc);
                mvpp2_cls_flow_port_add(&fe, 0xf);

                mvpp2_cls_flow_write(priv, &fe);
        }

        return 0;
}

static int mvpp2_cls_c2_build_match(struct mvpp2_rfs_rule *rule)
{
        struct flow_rule *flow = rule->flow;
        int offs = 0;

        /* The order of insertion in C2 tcam must match the order in which
         * the fields are found in the header
         */
        if (flow_rule_match_key(flow, FLOW_DISSECTOR_KEY_VLAN)) {
                struct flow_match_vlan match;

                flow_rule_match_vlan(flow, &match);
                if (match.mask->vlan_id) {
                        rule->hek_fields |= MVPP22_CLS_HEK_OPT_VLAN;

                        rule->c2_tcam |= ((u64)match.key->vlan_id) << offs;
                        rule->c2_tcam_mask |= ((u64)match.mask->vlan_id) << offs;

                        /* Don't update the offset yet */
                }

                if (match.mask->vlan_priority) {
                        rule->hek_fields |= MVPP22_CLS_HEK_OPT_VLAN_PRI;

                        /* VLAN pri is always at offset 13 relative to the
                         * current offset
                         */
                        rule->c2_tcam |= ((u64)match.key->vlan_priority) <<
                                (offs + 13);
                        rule->c2_tcam_mask |= ((u64)match.mask->vlan_priority) <<
                                (offs + 13);
                }

                if (match.mask->vlan_dei)
                        return -EOPNOTSUPP;

                /* vlan id and prio always seem to take a full 16-bit slot in
                 * the Header Extracted Key.
                 */
                offs += 16;
        }

        if (flow_rule_match_key(flow, FLOW_DISSECTOR_KEY_PORTS)) {
                struct flow_match_ports match;

                flow_rule_match_ports(flow, &match);
                if (match.mask->src) {
                        rule->hek_fields |= MVPP22_CLS_HEK_OPT_L4SIP;

                        rule->c2_tcam |= ((u64)ntohs(match.key->src)) << offs;
                        rule->c2_tcam_mask |= ((u64)ntohs(match.mask->src)) << offs;
                        offs += mvpp2_cls_hek_field_size(MVPP22_CLS_HEK_OPT_L4SIP);
                }

                if (match.mask->dst) {
                        rule->hek_fields |= MVPP22_CLS_HEK_OPT_L4DIP;

                        rule->c2_tcam |= ((u64)ntohs(match.key->dst)) << offs;
                        rule->c2_tcam_mask |= ((u64)ntohs(match.mask->dst)) << offs;
                        offs += mvpp2_cls_hek_field_size(MVPP22_CLS_HEK_OPT_L4DIP);
                }
        }

        if (hweight16(rule->hek_fields) > MVPP2_FLOW_N_FIELDS)
                return -EOPNOTSUPP;

        return 0;
}

static int mvpp2_cls_rfs_parse_rule(struct mvpp2_rfs_rule *rule)
{
        struct flow_rule *flow = rule->flow;
        struct flow_action_entry *act;

        if (!flow_action_basic_hw_stats_check(&rule->flow->action, NULL))
                return -EOPNOTSUPP;

        act = &flow->action.entries[0];
        if (act->id != FLOW_ACTION_QUEUE && act->id != FLOW_ACTION_DROP)
                return -EOPNOTSUPP;

        /* When both an RSS context and an queue index are set, the index
         * is considered as an offset to be added to the indirection table
         * entries. We don't support this, so reject this rule.
         */
        if (act->queue.ctx && act->queue.index)
                return -EOPNOTSUPP;

        /* For now, only use the C2 engine which has a HEK size limited to 64
         * bits for TCAM matching.
         */
        rule->engine = MVPP22_CLS_ENGINE_C2;

        if (mvpp2_cls_c2_build_match(rule))
                return -EINVAL;

        return 0;
}

int mvpp2_ethtool_cls_rule_get(struct mvpp2_port *port,
                               struct ethtool_rxnfc *rxnfc)
{
        struct mvpp2_ethtool_fs *efs;

        if (rxnfc->fs.location >= MVPP2_N_RFS_ENTRIES_PER_FLOW)
                return -EINVAL;

        efs = port->rfs_rules[rxnfc->fs.location];
        if (!efs)
                return -ENOENT;

        memcpy(rxnfc, &efs->rxnfc, sizeof(efs->rxnfc));

        return 0;
}

int mvpp2_ethtool_cls_rule_ins(struct mvpp2_port *port,
                               struct ethtool_rxnfc *info)
{
        struct ethtool_rx_flow_spec_input input = {};
        struct ethtool_rx_flow_rule *ethtool_rule;
        struct mvpp2_ethtool_fs *efs, *old_efs;
        int ret = 0;

        if (info->fs.location >= MVPP2_N_RFS_ENTRIES_PER_FLOW)
                return -EINVAL;

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

        input.fs = &info->fs;

        /* We need to manually set the rss_ctx, since this info isn't present
         * in info->fs
         */
        if (info->fs.flow_type & FLOW_RSS)
                input.rss_ctx = info->rss_context;

        ethtool_rule = ethtool_rx_flow_rule_create(&input);
        if (IS_ERR(ethtool_rule)) {
                ret = PTR_ERR(ethtool_rule);
                goto clean_rule;
        }

        efs->rule.flow = ethtool_rule->rule;
        efs->rule.flow_type = mvpp2_cls_ethtool_flow_to_type(info->fs.flow_type);
        if (efs->rule.flow_type < 0) {
                ret = efs->rule.flow_type;
                goto clean_rule;
        }

        ret = mvpp2_cls_rfs_parse_rule(&efs->rule);
        if (ret)
                goto clean_eth_rule;

        efs->rule.loc = info->fs.location;

        /* Replace an already existing rule */
        if (port->rfs_rules[efs->rule.loc]) {
                old_efs = port->rfs_rules[efs->rule.loc];
                ret = mvpp2_port_cls_rfs_rule_remove(port, &old_efs->rule);
                if (ret)
                        goto clean_eth_rule;
                kfree(old_efs);
                port->n_rfs_rules--;
        }

        ret = mvpp2_port_flt_rfs_rule_insert(port, &efs->rule);
        if (ret)
                goto clean_eth_rule;

        ethtool_rx_flow_rule_destroy(ethtool_rule);
        efs->rule.flow = NULL;

        memcpy(&efs->rxnfc, info, sizeof(*info));
        port->rfs_rules[efs->rule.loc] = efs;
        port->n_rfs_rules++;

        return ret;

clean_eth_rule:
        ethtool_rx_flow_rule_destroy(ethtool_rule);
clean_rule:
        kfree(efs);
        return ret;
}

int mvpp2_ethtool_cls_rule_del(struct mvpp2_port *port,
                               struct ethtool_rxnfc *info)
{
        struct mvpp2_ethtool_fs *efs;
        int ret;

        if (info->fs.location >= MVPP2_N_RFS_ENTRIES_PER_FLOW)
                return -EINVAL;

        efs = port->rfs_rules[info->fs.location];
        if (!efs)
                return -EINVAL;

        /* Remove the rule from the engines. */
        ret = mvpp2_port_cls_rfs_rule_remove(port, &efs->rule);
        if (ret)
                return ret;

        port->n_rfs_rules--;
        port->rfs_rules[info->fs.location] = NULL;
        kfree(efs);

        return 0;
}

static inline u32 mvpp22_rxfh_indir(struct mvpp2_port *port, u32 rxq)
{
        int nrxqs, cpu, cpus = num_possible_cpus();

        /* Number of RXQs per CPU */
        nrxqs = port->nrxqs / cpus;

        /* CPU that will handle this rx queue */
        cpu = rxq / nrxqs;

        if (!cpu_online(cpu))
                return port->first_rxq;

        /* Indirection to better distribute the paquets on the CPUs when
         * configuring the RSS queues.
         */
        return port->first_rxq + ((rxq * nrxqs + rxq / cpus) % port->nrxqs);
}

static void mvpp22_rss_fill_table(struct mvpp2_port *port,
                                  struct mvpp2_rss_table *table,
                                  u32 rss_ctx)
{
        struct mvpp2 *priv = port->priv;
        int i;

        for (i = 0; i < MVPP22_RSS_TABLE_ENTRIES; i++) {
                u32 sel = MVPP22_RSS_INDEX_TABLE(rss_ctx) |
                          MVPP22_RSS_INDEX_TABLE_ENTRY(i);
                mvpp2_write(priv, MVPP22_RSS_INDEX, sel);

                mvpp2_write(priv, MVPP22_RSS_TABLE_ENTRY,
                            mvpp22_rxfh_indir(port, table->indir[i]));
        }
}

static int mvpp22_rss_context_create(struct mvpp2_port *port, u32 *rss_ctx)
{
        struct mvpp2 *priv = port->priv;
        u32 ctx;

        /* Find the first free RSS table */
        for (ctx = 0; ctx < MVPP22_N_RSS_TABLES; ctx++) {
                if (!priv->rss_tables[ctx])
                        break;
        }

        if (ctx == MVPP22_N_RSS_TABLES)
                return -EINVAL;

        priv->rss_tables[ctx] = kzalloc(sizeof(*priv->rss_tables[ctx]),
                                        GFP_KERNEL);
        if (!priv->rss_tables[ctx])
                return -ENOMEM;

        *rss_ctx = ctx;

        /* Set the table width: replace the whole classifier Rx queue number
         * with the ones configured in RSS table entries.
         */
        mvpp2_write(priv, MVPP22_RSS_INDEX, MVPP22_RSS_INDEX_TABLE(ctx));
        mvpp2_write(priv, MVPP22_RSS_WIDTH, 8);

        mvpp2_write(priv, MVPP22_RSS_INDEX, MVPP22_RSS_INDEX_QUEUE(ctx));
        mvpp2_write(priv, MVPP22_RXQ2RSS_TABLE, MVPP22_RSS_TABLE_POINTER(ctx));

        return 0;
}

int mvpp22_port_rss_ctx_create(struct mvpp2_port *port, u32 *port_ctx)
{
        u32 rss_ctx;
        int ret, i;

        ret = mvpp22_rss_context_create(port, &rss_ctx);
        if (ret)
                return ret;

        /* Find the first available context number in the port, starting from 1.
         * Context 0 on each port is reserved for the default context.
         */
        for (i = 1; i < MVPP22_N_RSS_TABLES; i++) {
                if (port->rss_ctx[i] < 0)
                        break;
        }

        if (i == MVPP22_N_RSS_TABLES)
                return -EINVAL;

        port->rss_ctx[i] = rss_ctx;
        *port_ctx = i;

        return 0;
}

static struct mvpp2_rss_table *mvpp22_rss_table_get(struct mvpp2 *priv,
                                                    int rss_ctx)
{
        if (rss_ctx < 0 || rss_ctx >= MVPP22_N_RSS_TABLES)
                return NULL;

        return priv->rss_tables[rss_ctx];
}

int mvpp22_port_rss_ctx_delete(struct mvpp2_port *port, u32 port_ctx)
{
        struct mvpp2 *priv = port->priv;
        struct ethtool_rxnfc *rxnfc;
        int i, rss_ctx, ret;

        rss_ctx = mvpp22_rss_ctx(port, port_ctx);

        if (rss_ctx < 0 || rss_ctx >= MVPP22_N_RSS_TABLES)
                return -EINVAL;

        /* Invalidate any active classification rule that use this context */
        for (i = 0; i < MVPP2_N_RFS_ENTRIES_PER_FLOW; i++) {
                if (!port->rfs_rules[i])
                        continue;

                rxnfc = &port->rfs_rules[i]->rxnfc;
                if (!(rxnfc->fs.flow_type & FLOW_RSS) ||
                    rxnfc->rss_context != port_ctx)
                        continue;

                ret = mvpp2_ethtool_cls_rule_del(port, rxnfc);
                if (ret) {
                        netdev_warn(port->dev,
                                    "couldn't remove classification rule %d associated to this context",
                                    rxnfc->fs.location);
                }
        }

        kfree(priv->rss_tables[rss_ctx]);

        priv->rss_tables[rss_ctx] = NULL;
        port->rss_ctx[port_ctx] = -1;

        return 0;
}

int mvpp22_port_rss_ctx_indir_set(struct mvpp2_port *port, u32 port_ctx,
                                  const u32 *indir)
{
        int rss_ctx = mvpp22_rss_ctx(port, port_ctx);
        struct mvpp2_rss_table *rss_table = mvpp22_rss_table_get(port->priv,
                                                                 rss_ctx);

        if (!rss_table)
                return -EINVAL;

        memcpy(rss_table->indir, indir,
               MVPP22_RSS_TABLE_ENTRIES * sizeof(rss_table->indir[0]));

        mvpp22_rss_fill_table(port, rss_table, rss_ctx);

        return 0;
}

int mvpp22_port_rss_ctx_indir_get(struct mvpp2_port *port, u32 port_ctx,
                                  u32 *indir)
{
        int rss_ctx =  mvpp22_rss_ctx(port, port_ctx);
        struct mvpp2_rss_table *rss_table = mvpp22_rss_table_get(port->priv,
                                                                 rss_ctx);

        if (!rss_table)
                return -EINVAL;

        memcpy(indir, rss_table->indir,
               MVPP22_RSS_TABLE_ENTRIES * sizeof(rss_table->indir[0]));

        return 0;
}

int mvpp2_ethtool_rxfh_set(struct mvpp2_port *port, struct ethtool_rxnfc *info)
{
        u16 hash_opts = 0;
        u32 flow_type;

        flow_type = mvpp2_cls_ethtool_flow_to_type(info->flow_type);

        switch (flow_type) {
        case MVPP22_FLOW_TCP4:
        case MVPP22_FLOW_UDP4:
        case MVPP22_FLOW_TCP6:
        case MVPP22_FLOW_UDP6:
                if (info->data & RXH_L4_B_0_1)
                        hash_opts |= MVPP22_CLS_HEK_OPT_L4SIP;
                if (info->data & RXH_L4_B_2_3)
                        hash_opts |= MVPP22_CLS_HEK_OPT_L4DIP;
                fallthrough;
        case MVPP22_FLOW_IP4:
        case MVPP22_FLOW_IP6:
                if (info->data & RXH_L2DA)
                        hash_opts |= MVPP22_CLS_HEK_OPT_MAC_DA;
                if (info->data & RXH_VLAN)
                        hash_opts |= MVPP22_CLS_HEK_OPT_VLAN;
                if (info->data & RXH_L3_PROTO)
                        hash_opts |= MVPP22_CLS_HEK_OPT_L3_PROTO;
                if (info->data & RXH_IP_SRC)
                        hash_opts |= (MVPP22_CLS_HEK_OPT_IP4SA |
                                     MVPP22_CLS_HEK_OPT_IP6SA);
                if (info->data & RXH_IP_DST)
                        hash_opts |= (MVPP22_CLS_HEK_OPT_IP4DA |
                                     MVPP22_CLS_HEK_OPT_IP6DA);
                break;
        default: return -EOPNOTSUPP;
        }

        return mvpp2_port_rss_hash_opts_set(port, flow_type, hash_opts);
}

int mvpp2_ethtool_rxfh_get(struct mvpp2_port *port, struct ethtool_rxnfc *info)
{
        unsigned long hash_opts;
        u32 flow_type;
        int i;

        flow_type = mvpp2_cls_ethtool_flow_to_type(info->flow_type);

        hash_opts = mvpp2_port_rss_hash_opts_get(port, flow_type);
        info->data = 0;

        for_each_set_bit(i, &hash_opts, MVPP22_CLS_HEK_N_FIELDS) {
                switch (BIT(i)) {
                case MVPP22_CLS_HEK_OPT_MAC_DA:
                        info->data |= RXH_L2DA;
                        break;
                case MVPP22_CLS_HEK_OPT_VLAN:
                        info->data |= RXH_VLAN;
                        break;
                case MVPP22_CLS_HEK_OPT_L3_PROTO:
                        info->data |= RXH_L3_PROTO;
                        break;
                case MVPP22_CLS_HEK_OPT_IP4SA:
                case MVPP22_CLS_HEK_OPT_IP6SA:
                        info->data |= RXH_IP_SRC;
                        break;
                case MVPP22_CLS_HEK_OPT_IP4DA:
                case MVPP22_CLS_HEK_OPT_IP6DA:
                        info->data |= RXH_IP_DST;
                        break;
                case MVPP22_CLS_HEK_OPT_L4SIP:
                        info->data |= RXH_L4_B_0_1;
                        break;
                case MVPP22_CLS_HEK_OPT_L4DIP:
                        info->data |= RXH_L4_B_2_3;
                        break;
                default:
                        return -EINVAL;
                }
        }
        return 0;
}

int mvpp22_port_rss_init(struct mvpp2_port *port)
{
        struct mvpp2_rss_table *table;
        u32 context = 0;
        int i, ret;

        for (i = 0; i < MVPP22_N_RSS_TABLES; i++)
                port->rss_ctx[i] = -1;

        ret = mvpp22_rss_context_create(port, &context);
        if (ret)
                return ret;

        table = mvpp22_rss_table_get(port->priv, context);
        if (!table)
                return -EINVAL;

        port->rss_ctx[0] = context;

        /* Configure the first table to evenly distribute the packets across
         * real Rx Queues. The table entries map a hash to a port Rx Queue.
         */
        for (i = 0; i < MVPP22_RSS_TABLE_ENTRIES; i++)
                table->indir[i] = ethtool_rxfh_indir_default(i, port->nrxqs);

        mvpp22_rss_fill_table(port, table, mvpp22_rss_ctx(port, 0));

        /* Configure default flows */
        mvpp2_port_rss_hash_opts_set(port, MVPP22_FLOW_IP4, MVPP22_CLS_HEK_IP4_2T);
        mvpp2_port_rss_hash_opts_set(port, MVPP22_FLOW_IP6, MVPP22_CLS_HEK_IP6_2T);
        mvpp2_port_rss_hash_opts_set(port, MVPP22_FLOW_TCP4, MVPP22_CLS_HEK_IP4_5T);
        mvpp2_port_rss_hash_opts_set(port, MVPP22_FLOW_TCP6, MVPP22_CLS_HEK_IP6_5T);
        mvpp2_port_rss_hash_opts_set(port, MVPP22_FLOW_UDP4, MVPP22_CLS_HEK_IP4_5T);
        mvpp2_port_rss_hash_opts_set(port, MVPP22_FLOW_UDP6, MVPP22_CLS_HEK_IP6_5T);

        return 0;
}