LXR linux/drivers/net/ethernet/mscc/ocelot

   1/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
   2/* Microsemi Ocelot Switch driver
   3 * Copyright (c) 2019 Microsemi Corporation
   4 */
   5
   6#ifndef _MSCC_OCELOT_VCAP_H_
   7#define _MSCC_OCELOT_VCAP_H_
   8
   9#include "ocelot.h"
  10#include "ocelot_police.h"
  11#include <net/sch_generic.h>
  12#include <net/pkt_cls.h>
  13
  14struct ocelot_ipv4 {
  15        u8 addr[4];
  16};
  17
  18enum ocelot_vcap_bit {
  19        OCELOT_VCAP_BIT_ANY,
  20        OCELOT_VCAP_BIT_0,
  21        OCELOT_VCAP_BIT_1
  22};
  23
  24struct ocelot_vcap_u8 {
  25        u8 value[1];
  26        u8 mask[1];
  27};
  28
  29struct ocelot_vcap_u16 {
  30        u8 value[2];
  31        u8 mask[2];
  32};
  33
  34struct ocelot_vcap_u24 {
  35        u8 value[3];
  36        u8 mask[3];
  37};
  38
  39struct ocelot_vcap_u32 {
  40        u8 value[4];
  41        u8 mask[4];
  42};
  43
  44struct ocelot_vcap_u40 {
  45        u8 value[5];
  46        u8 mask[5];
  47};
  48
  49struct ocelot_vcap_u48 {
  50        u8 value[6];
  51        u8 mask[6];
  52};
  53
  54struct ocelot_vcap_u64 {
  55        u8 value[8];
  56        u8 mask[8];
  57};
  58
  59struct ocelot_vcap_u128 {
  60        u8 value[16];
  61        u8 mask[16];
  62};
  63
  64struct ocelot_vcap_vid {
  65        u16 value;
  66        u16 mask;
  67};
  68
  69struct ocelot_vcap_ipv4 {
  70        struct ocelot_ipv4 value;
  71        struct ocelot_ipv4 mask;
  72};
  73
  74struct ocelot_vcap_udp_tcp {
  75        u16 value;
  76        u16 mask;
  77};
  78
  79enum ocelot_vcap_key_type {
  80        OCELOT_VCAP_KEY_ANY,
  81        OCELOT_VCAP_KEY_ETYPE,
  82        OCELOT_VCAP_KEY_LLC,
  83        OCELOT_VCAP_KEY_SNAP,
  84        OCELOT_VCAP_KEY_ARP,
  85        OCELOT_VCAP_KEY_IPV4,
  86        OCELOT_VCAP_KEY_IPV6
  87};
  88
  89struct ocelot_vcap_key_vlan {
  90        struct ocelot_vcap_vid vid;    /* VLAN ID (12 bit) */
  91        struct ocelot_vcap_u8  pcp;    /* PCP (3 bit) */
  92        enum ocelot_vcap_bit dei;    /* DEI */
  93        enum ocelot_vcap_bit tagged; /* Tagged/untagged frame */
  94};
  95
  96struct ocelot_vcap_key_etype {
  97        struct ocelot_vcap_u48 dmac;
  98        struct ocelot_vcap_u48 smac;
  99        struct ocelot_vcap_u16 etype;
 100        struct ocelot_vcap_u16 data; /* MAC data */
 101};
 102
 103struct ocelot_vcap_key_llc {
 104        struct ocelot_vcap_u48 dmac;
 105        struct ocelot_vcap_u48 smac;
 106
 107        /* LLC header: DSAP at byte 0, SSAP at byte 1, Control at byte 2 */
 108        struct ocelot_vcap_u32 llc;
 109};
 110
 111struct ocelot_vcap_key_snap {
 112        struct ocelot_vcap_u48 dmac;
 113        struct ocelot_vcap_u48 smac;
 114
 115        /* SNAP header: Organization Code at byte 0, Type at byte 3 */
 116        struct ocelot_vcap_u40 snap;
 117};
 118
 119struct ocelot_vcap_key_arp {
 120        struct ocelot_vcap_u48 smac;
 121        enum ocelot_vcap_bit arp;       /* Opcode ARP/RARP */
 122        enum ocelot_vcap_bit req;       /* Opcode request/reply */
 123        enum ocelot_vcap_bit unknown;    /* Opcode unknown */
 124        enum ocelot_vcap_bit smac_match; /* Sender MAC matches SMAC */
 125        enum ocelot_vcap_bit dmac_match; /* Target MAC matches DMAC */
 126
 127        /**< Protocol addr. length 4, hardware length 6 */
 128        enum ocelot_vcap_bit length;
 129
 130        enum ocelot_vcap_bit ip;       /* Protocol address type IP */
 131        enum  ocelot_vcap_bit ethernet; /* Hardware address type Ethernet */
 132        struct ocelot_vcap_ipv4 sip;     /* Sender IP address */
 133        struct ocelot_vcap_ipv4 dip;     /* Target IP address */
 134};
 135
 136struct ocelot_vcap_key_ipv4 {
 137        enum ocelot_vcap_bit ttl;      /* TTL zero */
 138        enum ocelot_vcap_bit fragment; /* Fragment */
 139        enum ocelot_vcap_bit options;  /* Header options */
 140        struct ocelot_vcap_u8 ds;
 141        struct ocelot_vcap_u8 proto;      /* Protocol */
 142        struct ocelot_vcap_ipv4 sip;      /* Source IP address */
 143        struct ocelot_vcap_ipv4 dip;      /* Destination IP address */
 144        struct ocelot_vcap_u48 data;      /* Not UDP/TCP: IP data */
 145        struct ocelot_vcap_udp_tcp sport; /* UDP/TCP: Source port */
 146        struct ocelot_vcap_udp_tcp dport; /* UDP/TCP: Destination port */
 147        enum ocelot_vcap_bit tcp_fin;
 148        enum ocelot_vcap_bit tcp_syn;
 149        enum ocelot_vcap_bit tcp_rst;
 150        enum ocelot_vcap_bit tcp_psh;
 151        enum ocelot_vcap_bit tcp_ack;
 152        enum ocelot_vcap_bit tcp_urg;
 153        enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
 154        enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
 155        enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
 156};
 157
 158struct ocelot_vcap_key_ipv6 {
 159        struct ocelot_vcap_u8 proto; /* IPv6 protocol */
 160        struct ocelot_vcap_u128 sip; /* IPv6 source (byte 0-7 ignored) */
 161        enum ocelot_vcap_bit ttl;  /* TTL zero */
 162        struct ocelot_vcap_u8 ds;
 163        struct ocelot_vcap_u48 data; /* Not UDP/TCP: IP data */
 164        struct ocelot_vcap_udp_tcp sport;
 165        struct ocelot_vcap_udp_tcp dport;
 166        enum ocelot_vcap_bit tcp_fin;
 167        enum ocelot_vcap_bit tcp_syn;
 168        enum ocelot_vcap_bit tcp_rst;
 169        enum ocelot_vcap_bit tcp_psh;
 170        enum ocelot_vcap_bit tcp_ack;
 171        enum ocelot_vcap_bit tcp_urg;
 172        enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
 173        enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
 174        enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
 175};
 176
 177enum ocelot_vcap_action {
 178        OCELOT_VCAP_ACTION_DROP,
 179        OCELOT_VCAP_ACTION_TRAP,
 180        OCELOT_VCAP_ACTION_POLICE,
 181};
 182
 183struct ocelot_vcap_stats {
 184        u64 bytes;
 185        u64 pkts;
 186        u64 used;
 187};
 188
 189struct ocelot_vcap_filter {
 190        struct list_head list;
 191
 192        u16 prio;
 193        u32 id;
 194
 195        enum ocelot_vcap_action action;
 196        struct ocelot_vcap_stats stats;
 197        unsigned long ingress_port_mask;
 198
 199        enum ocelot_vcap_bit dmac_mc;
 200        enum ocelot_vcap_bit dmac_bc;
 201        struct ocelot_vcap_key_vlan vlan;
 202
 203        enum ocelot_vcap_key_type key_type;
 204        union {
 205                /* OCELOT_VCAP_KEY_ANY: No specific fields */
 206                struct ocelot_vcap_key_etype etype;
 207                struct ocelot_vcap_key_llc llc;
 208                struct ocelot_vcap_key_snap snap;
 209                struct ocelot_vcap_key_arp arp;
 210                struct ocelot_vcap_key_ipv4 ipv4;
 211                struct ocelot_vcap_key_ipv6 ipv6;
 212        } key;
 213        struct ocelot_policer pol;
 214        u32 pol_ix;
 215};
 216
 217int ocelot_vcap_filter_add(struct ocelot *ocelot,
 218                           struct ocelot_vcap_filter *rule,
 219                           struct netlink_ext_ack *extack);
 220int ocelot_vcap_filter_del(struct ocelot *ocelot,
 221                           struct ocelot_vcap_filter *rule);
 222int ocelot_vcap_filter_stats_update(struct ocelot *ocelot,
 223                                    struct ocelot_vcap_filter *rule);
 224
 225int ocelot_vcap_init(struct ocelot *ocelot);
 226
 227int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
 228                               struct flow_cls_offload *f,
 229                               bool ingress);
 230
 231#endif /* _MSCC_OCELOT_VCAP_H_ */
 232