drivers/net/ethernet/mscc/ocelot_vcap.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_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
  14 #define OCELOT_POLICER_DISCARD 0x17f
  15
  16 struct ocelot_ipv4 {
  17         u8 addr[4];
  18 };
  19
  20 enum ocelot_vcap_bit {
  21         OCELOT_VCAP_BIT_ANY,
  22         OCELOT_VCAP_BIT_0,
  23         OCELOT_VCAP_BIT_1
  24 };
  25
  26 struct ocelot_vcap_u8 {
  27         u8 value[1];
  28         u8 mask[1];
  29 };
  30
  31 struct ocelot_vcap_u16 {
  32         u8 value[2];
  33         u8 mask[2];
  34 };
  35
  36 struct ocelot_vcap_u24 {
  37         u8 value[3];
  38         u8 mask[3];
  39 };
  40
  41 struct ocelot_vcap_u32 {
  42         u8 value[4];
  43         u8 mask[4];
  44 };
  45
  46 struct ocelot_vcap_u40 {
  47         u8 value[5];
  48         u8 mask[5];
  49 };
  50
  51 struct ocelot_vcap_u48 {
  52         u8 value[6];
  53         u8 mask[6];
  54 };
  55
  56 struct ocelot_vcap_u64 {
  57         u8 value[8];
  58         u8 mask[8];
  59 };
  60
  61 struct ocelot_vcap_u128 {
  62         u8 value[16];
  63         u8 mask[16];
  64 };
  65
  66 struct ocelot_vcap_vid {
  67         u16 value;
  68         u16 mask;
  69 };
  70
  71 struct ocelot_vcap_ipv4 {
  72         struct ocelot_ipv4 value;
  73         struct ocelot_ipv4 mask;
  74 };
  75
  76 struct ocelot_vcap_udp_tcp {
  77         u16 value;
  78         u16 mask;
  79 };
  80
  81 struct ocelot_vcap_port {
  82         u8 value;
  83         u8 mask;
  84 };
  85
  86 enum ocelot_vcap_key_type {
  87         OCELOT_VCAP_KEY_ANY,
  88         OCELOT_VCAP_KEY_ETYPE,
  89         OCELOT_VCAP_KEY_LLC,
  90         OCELOT_VCAP_KEY_SNAP,
  91         OCELOT_VCAP_KEY_ARP,
  92         OCELOT_VCAP_KEY_IPV4,
  93         OCELOT_VCAP_KEY_IPV6
  94 };
  95
  96 struct ocelot_vcap_key_vlan {
  97         struct ocelot_vcap_vid vid;    /* VLAN ID (12 bit) */
  98         struct ocelot_vcap_u8  pcp;    /* PCP (3 bit) */
  99         enum ocelot_vcap_bit dei;    /* DEI */
 100         enum ocelot_vcap_bit tagged; /* Tagged/untagged frame */
 101 };
 102
 103 struct ocelot_vcap_key_etype {
 104         struct ocelot_vcap_u48 dmac;
 105         struct ocelot_vcap_u48 smac;
 106         struct ocelot_vcap_u16 etype;
 107         struct ocelot_vcap_u16 data; /* MAC data */
 108 };
 109
 110 struct ocelot_vcap_key_llc {
 111         struct ocelot_vcap_u48 dmac;
 112         struct ocelot_vcap_u48 smac;
 113
 114         /* LLC header: DSAP at byte 0, SSAP at byte 1, Control at byte 2 */
 115         struct ocelot_vcap_u32 llc;
 116 };
 117
 118 struct ocelot_vcap_key_snap {
 119         struct ocelot_vcap_u48 dmac;
 120         struct ocelot_vcap_u48 smac;
 121
 122         /* SNAP header: Organization Code at byte 0, Type at byte 3 */
 123         struct ocelot_vcap_u40 snap;
 124 };
 125
 126 struct ocelot_vcap_key_arp {
 127         struct ocelot_vcap_u48 smac;
 128         enum ocelot_vcap_bit arp;       /* Opcode ARP/RARP */
 129         enum ocelot_vcap_bit req;       /* Opcode request/reply */
 130         enum ocelot_vcap_bit unknown;    /* Opcode unknown */
 131         enum ocelot_vcap_bit smac_match; /* Sender MAC matches SMAC */
 132         enum ocelot_vcap_bit dmac_match; /* Target MAC matches DMAC */
 133
 134         /**< Protocol addr. length 4, hardware length 6 */
 135         enum ocelot_vcap_bit length;
 136
 137         enum ocelot_vcap_bit ip;       /* Protocol address type IP */
 138         enum  ocelot_vcap_bit ethernet; /* Hardware address type Ethernet */
 139         struct ocelot_vcap_ipv4 sip;     /* Sender IP address */
 140         struct ocelot_vcap_ipv4 dip;     /* Target IP address */
 141 };
 142
 143 struct ocelot_vcap_key_ipv4 {
 144         enum ocelot_vcap_bit ttl;      /* TTL zero */
 145         enum ocelot_vcap_bit fragment; /* Fragment */
 146         enum ocelot_vcap_bit options;  /* Header options */
 147         struct ocelot_vcap_u8 ds;
 148         struct ocelot_vcap_u8 proto;      /* Protocol */
 149         struct ocelot_vcap_ipv4 sip;      /* Source IP address */
 150         struct ocelot_vcap_ipv4 dip;      /* Destination IP address */
 151         struct ocelot_vcap_u48 data;      /* Not UDP/TCP: IP data */
 152         struct ocelot_vcap_udp_tcp sport; /* UDP/TCP: Source port */
 153         struct ocelot_vcap_udp_tcp dport; /* UDP/TCP: Destination port */
 154         enum ocelot_vcap_bit tcp_fin;
 155         enum ocelot_vcap_bit tcp_syn;
 156         enum ocelot_vcap_bit tcp_rst;
 157         enum ocelot_vcap_bit tcp_psh;
 158         enum ocelot_vcap_bit tcp_ack;
 159         enum ocelot_vcap_bit tcp_urg;
 160         enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
 161         enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
 162         enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
 163 };
 164
 165 struct ocelot_vcap_key_ipv6 {
 166         struct ocelot_vcap_u8 proto; /* IPv6 protocol */
 167         struct ocelot_vcap_u128 sip; /* IPv6 source (byte 0-7 ignored) */
 168         struct ocelot_vcap_u128 dip; /* IPv6 destination (byte 0-7 ignored) */
 169         enum ocelot_vcap_bit ttl;  /* TTL zero */
 170         struct ocelot_vcap_u8 ds;
 171         struct ocelot_vcap_u48 data; /* Not UDP/TCP: IP data */
 172         struct ocelot_vcap_udp_tcp sport;
 173         struct ocelot_vcap_udp_tcp dport;
 174         enum ocelot_vcap_bit tcp_fin;
 175         enum ocelot_vcap_bit tcp_syn;
 176         enum ocelot_vcap_bit tcp_rst;
 177         enum ocelot_vcap_bit tcp_psh;
 178         enum ocelot_vcap_bit tcp_ack;
 179         enum ocelot_vcap_bit tcp_urg;
 180         enum ocelot_vcap_bit sip_eq_dip;     /* SIP equals DIP  */
 181         enum ocelot_vcap_bit sport_eq_dport; /* SPORT equals DPORT  */
 182         enum ocelot_vcap_bit seq_zero;       /* TCP sequence number is zero */
 183 };
 184
 185 enum ocelot_mask_mode {
 186         OCELOT_MASK_MODE_NONE,
 187         OCELOT_MASK_MODE_PERMIT_DENY,
 188         OCELOT_MASK_MODE_POLICY,
 189         OCELOT_MASK_MODE_REDIRECT,
 190 };
 191
 192 enum ocelot_es0_tag {
 193         OCELOT_NO_ES0_TAG,
 194         OCELOT_ES0_TAG,
 195         OCELOT_FORCE_PORT_TAG,
 196         OCELOT_FORCE_UNTAG,
 197 };
 198
 199 enum ocelot_tag_tpid_sel {
 200         OCELOT_TAG_TPID_SEL_8021Q,
 201         OCELOT_TAG_TPID_SEL_8021AD,
 202 };
 203
 204 struct ocelot_vcap_action {
 205         union {
 206                 /* VCAP ES0 */
 207                 struct {
 208                         enum ocelot_es0_tag push_outer_tag;
 209                         enum ocelot_es0_tag push_inner_tag;
 210                         enum ocelot_tag_tpid_sel tag_a_tpid_sel;
 211                         int tag_a_vid_sel;
 212                         int tag_a_pcp_sel;
 213                         u16 vid_a_val;
 214                         u8 pcp_a_val;
 215                         u8 dei_a_val;
 216                         enum ocelot_tag_tpid_sel tag_b_tpid_sel;
 217                         int tag_b_vid_sel;
 218                         int tag_b_pcp_sel;
 219                         u16 vid_b_val;
 220                         u8 pcp_b_val;
 221                         u8 dei_b_val;
 222                 };
 223
 224                 /* VCAP IS1 */
 225                 struct {
 226                         bool vid_replace_ena;
 227                         u16 vid;
 228                         bool vlan_pop_cnt_ena;
 229                         int vlan_pop_cnt;
 230                         bool pcp_dei_ena;
 231                         u8 pcp;
 232                         u8 dei;
 233                         bool qos_ena;
 234                         u8 qos_val;
 235                         u8 pag_override_mask;
 236                         u8 pag_val;
 237                 };
 238
 239                 /* VCAP IS2 */
 240                 struct {
 241                         bool cpu_copy_ena;
 242                         u8 cpu_qu_num;
 243                         enum ocelot_mask_mode mask_mode;
 244                         unsigned long port_mask;
 245                         bool police_ena;
 246                         struct ocelot_policer pol;
 247                         u32 pol_ix;
 248                 };
 249         };
 250 };
 251
 252 struct ocelot_vcap_stats {
 253         u64 bytes;
 254         u64 pkts;
 255         u64 used;
 256 };
 257
 258 enum ocelot_vcap_filter_type {
 259         OCELOT_VCAP_FILTER_DUMMY,
 260         OCELOT_VCAP_FILTER_PAG,
 261         OCELOT_VCAP_FILTER_OFFLOAD,
 262 };
 263
 264 struct ocelot_vcap_filter {
 265         struct list_head list;
 266
 267         enum ocelot_vcap_filter_type type;
 268         int block_id;
 269         int goto_target;
 270         int lookup;
 271         u8 pag;
 272         u16 prio;
 273         u32 id;
 274
 275         struct ocelot_vcap_action action;
 276         struct ocelot_vcap_stats stats;
 277         /* For VCAP IS1 and IS2 */
 278         unsigned long ingress_port_mask;
 279         /* For VCAP ES0 */
 280         struct ocelot_vcap_port ingress_port;
 281         struct ocelot_vcap_port egress_port;
 282
 283         enum ocelot_vcap_bit dmac_mc;
 284         enum ocelot_vcap_bit dmac_bc;
 285         struct ocelot_vcap_key_vlan vlan;
 286
 287         enum ocelot_vcap_key_type key_type;
 288         union {
 289                 /* OCELOT_VCAP_KEY_ANY: No specific fields */
 290                 struct ocelot_vcap_key_etype etype;
 291                 struct ocelot_vcap_key_llc llc;
 292                 struct ocelot_vcap_key_snap snap;
 293                 struct ocelot_vcap_key_arp arp;
 294                 struct ocelot_vcap_key_ipv4 ipv4;
 295                 struct ocelot_vcap_key_ipv6 ipv6;
 296         } key;
 297 };
 298
 299 int ocelot_vcap_filter_add(struct ocelot *ocelot,
 300                            struct ocelot_vcap_filter *rule,
 301                            struct netlink_ext_ack *extack);
 302 int ocelot_vcap_filter_del(struct ocelot *ocelot,
 303                            struct ocelot_vcap_filter *rule);
 304 int ocelot_vcap_filter_stats_update(struct ocelot *ocelot,
 305                                     struct ocelot_vcap_filter *rule);
 306 struct ocelot_vcap_filter *
 307 ocelot_vcap_block_find_filter_by_id(struct ocelot_vcap_block *block, int id);
 308
 309 void ocelot_detect_vcap_constants(struct ocelot *ocelot);
 310 int ocelot_vcap_init(struct ocelot *ocelot);
 311
 312 int ocelot_setup_tc_cls_flower(struct ocelot_port_private *priv,
 313                                struct flow_cls_offload *f,
 314                                bool ingress);
 315
 316 #endif /* _MSCC_OCELOT_VCAP_H_ */