drivers/net/ethernet/mscc/ocelot_ace.h

   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_ACE_H_
   7 #define _MSCC_OCELOT_ACE_H_
   8
   9 #include "ocelot.h"
  10 #include "ocelot_police.h"
  11 #include <net/sch_generic.h>
  12 #include <net/pkt_cls.h>
  13
  14 struct ocelot_ipv4 {
  15         u8 addr[4];
  16 };
  17
  18 enum ocelot_vcap_bit {
  19         OCELOT_VCAP_BIT_ANY,
  20         OCELOT_VCAP_BIT_0,
  21         OCELOT_VCAP_BIT_1
  22 };
  23
  24 struct ocelot_vcap_u8 {
  25         u8 value[1];
  26         u8 mask[1];
  27 };
  28
  29 struct ocelot_vcap_u16 {
  30         u8 value[2];
  31         u8 mask[2];
  32 };
  33
  34 struct ocelot_vcap_u24 {
  35         u8 value[3];
  36         u8 mask[3];
  37 };
  38
  39 struct ocelot_vcap_u32 {
  40         u8 value[4];
  41         u8 mask[4];
  42 };
  43
  44 struct ocelot_vcap_u40 {
  45         u8 value[5];
  46         u8 mask[5];
  47 };
  48
  49 struct ocelot_vcap_u48 {
  50         u8 value[6];
  51         u8 mask[6];
  52 };
  53
  54 struct ocelot_vcap_u64 {
  55         u8 value[8];
  56         u8 mask[8];
  57 };
  58
  59 struct ocelot_vcap_u128 {
  60         u8 value[16];
  61         u8 mask[16];
  62 };
  63
  64 struct ocelot_vcap_vid {
  65         u16 value;
  66         u16 mask;
  67 };
  68
  69 struct ocelot_vcap_ipv4 {
  70         struct ocelot_ipv4 value;
  71         struct ocelot_ipv4 mask;
  72 };
  73
  74 struct ocelot_vcap_udp_tcp {
  75         u16 value;
  76         u16 mask;
  77 };
  78
  79 enum ocelot_ace_type {
  80         OCELOT_ACE_TYPE_ANY,
  81         OCELOT_ACE_TYPE_ETYPE,
  82         OCELOT_ACE_TYPE_LLC,
  83         OCELOT_ACE_TYPE_SNAP,
  84         OCELOT_ACE_TYPE_ARP,
  85         OCELOT_ACE_TYPE_IPV4,
  86         OCELOT_ACE_TYPE_IPV6
  87 };
  88
  89 struct ocelot_ace_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
  96 struct ocelot_ace_frame_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
 103 struct ocelot_ace_frame_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
 111 struct ocelot_ace_frame_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
 119 struct ocelot_ace_frame_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
 136 struct ocelot_ace_frame_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
 158 struct ocelot_ace_frame_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
 177 enum ocelot_ace_action {
 178         OCELOT_ACL_ACTION_DROP,
 179         OCELOT_ACL_ACTION_TRAP,
 180         OCELOT_ACL_ACTION_POLICE,
 181 };
 182
 183 struct ocelot_ace_stats {
 184         u64 bytes;
 185         u64 pkts;
 186         u64 used;
 187 };
 188
 189 struct ocelot_ace_rule {
 190         struct list_head list;
 191
 192         u16 prio;
 193         u32 id;
 194
 195         enum ocelot_ace_action action;
 196         struct ocelot_ace_stats stats;
 197         u16 ingress_port_mask;
 198
 199         enum ocelot_vcap_bit dmac_mc;
 200         enum ocelot_vcap_bit dmac_bc;
 201         struct ocelot_ace_vlan vlan;
 202
 203         enum ocelot_ace_type type;
 204         union {
 205                 /* ocelot_ACE_TYPE_ANY: No specific fields */
 206                 struct ocelot_ace_frame_etype etype;
 207                 struct ocelot_ace_frame_llc llc;
 208                 struct ocelot_ace_frame_snap snap;
 209                 struct ocelot_ace_frame_arp arp;
 210                 struct ocelot_ace_frame_ipv4 ipv4;
 211                 struct ocelot_ace_frame_ipv6 ipv6;
 212         } frame;
 213         struct ocelot_policer pol;
 214         u32 pol_ix;
 215 };
 216
 217 int ocelot_ace_rule_offload_add(struct ocelot *ocelot,
 218                                 struct ocelot_ace_rule *rule);
 219 int ocelot_ace_rule_offload_del(struct ocelot *ocelot,
 220                                 struct ocelot_ace_rule *rule);
 221 int ocelot_ace_rule_stats_update(struct ocelot *ocelot,
 222                                  struct ocelot_ace_rule *rule);
 223
 224 int ocelot_ace_init(struct ocelot *ocelot);
 225
 226 int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
 227                                struct flow_cls_offload *f,
 228                                bool ingress);
 229
 230 #endif /* _MSCC_OCELOT_ACE_H_ */