drivers/net/octeontx2/otx2_lookup.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #include <rte_common.h>
   6 #include <rte_memzone.h>
   7
   8 #include "otx2_ethdev.h"
   9
  10 /* NIX_RX_PARSE_S's ERRCODE + ERRLEV (12 bits) */
  11 #define ERRCODE_ERRLEN_WIDTH            12
  12 #define ERR_ARRAY_SZ                    ((BIT(ERRCODE_ERRLEN_WIDTH)) *\
  13                                         sizeof(uint32_t))
  14
  15 #define LOOKUP_ARRAY_SZ                 (PTYPE_ARRAY_SZ + ERR_ARRAY_SZ)
  16
  17 const uint32_t *
  18 otx2_nix_supported_ptypes_get(struct rte_eth_dev *eth_dev)
  19 {
  20         struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
  21
  22         static const uint32_t ptypes[] = {
  23                 RTE_PTYPE_L2_ETHER_QINQ, /* LB */
  24                 RTE_PTYPE_L2_ETHER_VLAN, /* LB */
  25                 RTE_PTYPE_L2_ETHER_TIMESYNC, /* LB */
  26                 RTE_PTYPE_L2_ETHER_ARP,  /* LC */
  27                 RTE_PTYPE_L2_ETHER_NSH,  /* LC */
  28                 RTE_PTYPE_L2_ETHER_FCOE, /* LC */
  29                 RTE_PTYPE_L2_ETHER_MPLS, /* LC */
  30                 RTE_PTYPE_L3_IPV4,       /* LC */
  31                 RTE_PTYPE_L3_IPV4_EXT,   /* LC */
  32                 RTE_PTYPE_L3_IPV6,       /* LC */
  33                 RTE_PTYPE_L3_IPV6_EXT,   /* LC */
  34                 RTE_PTYPE_L4_TCP,        /* LD */
  35                 RTE_PTYPE_L4_UDP,        /* LD */
  36                 RTE_PTYPE_L4_SCTP,       /* LD */
  37                 RTE_PTYPE_L4_ICMP,       /* LD */
  38                 RTE_PTYPE_L4_IGMP,       /* LD */
  39                 RTE_PTYPE_TUNNEL_GRE,    /* LD */
  40                 RTE_PTYPE_TUNNEL_ESP,    /* LD */
  41                 RTE_PTYPE_TUNNEL_NVGRE,  /* LD */
  42                 RTE_PTYPE_TUNNEL_VXLAN,  /* LE */
  43                 RTE_PTYPE_TUNNEL_GENEVE, /* LE */
  44                 RTE_PTYPE_TUNNEL_GTPC,   /* LE */
  45                 RTE_PTYPE_TUNNEL_GTPU,   /* LE */
  46                 RTE_PTYPE_TUNNEL_VXLAN_GPE,   /* LE */
  47                 RTE_PTYPE_TUNNEL_MPLS_IN_GRE, /* LE */
  48                 RTE_PTYPE_TUNNEL_MPLS_IN_UDP, /* LE */
  49                 RTE_PTYPE_INNER_L2_ETHER,/* LF */
  50                 RTE_PTYPE_INNER_L3_IPV4, /* LG */
  51                 RTE_PTYPE_INNER_L3_IPV6, /* LG */
  52                 RTE_PTYPE_INNER_L4_TCP,  /* LH */
  53                 RTE_PTYPE_INNER_L4_UDP,  /* LH */
  54                 RTE_PTYPE_INNER_L4_SCTP, /* LH */
  55                 RTE_PTYPE_INNER_L4_ICMP, /* LH */
  56         };
  57
  58         if (dev->rx_offload_flags & NIX_RX_OFFLOAD_PTYPE_F)
  59                 return ptypes;
  60         else
  61                 return NULL;
  62 }
  63
  64 /*
  65  * +------------------ +------------------ +
  66  * |  | IL4 | IL3| IL2 | TU | L4 | L3 | L2 |
  67  * +-------------------+-------------------+
  68  *
  69  * +-------------------+------------------ +
  70  * |  | LH | LG  | LF  | LE | LD | LC | LB |
  71  * +-------------------+-------------------+
  72  *
  73  * ptype       [LE - LD - LC - LB]  = TU  - L4 -  L3  - T2
  74  * ptype_tunnel[LH - LG - LF]  = IL4 - IL3 - IL2 - TU
  75  *
  76  */
  77 static void
  78 nix_create_non_tunnel_ptype_array(uint16_t *ptype)
  79 {
  80         uint8_t lb, lc, ld, le;
  81         uint16_t idx, val;
  82
  83         for (idx = 0; idx < PTYPE_NON_TUNNEL_ARRAY_SZ; idx++) {
  84                 lb = idx & 0xF;
  85                 lc = (idx & 0xF0) >> 4;
  86                 ld = (idx & 0xF00) >> 8;
  87                 le = (idx & 0xF000) >> 12;
  88                 val = RTE_PTYPE_UNKNOWN;
  89
  90                 switch (lb) {
  91                 case NPC_LT_LB_QINQ:
  92                         val |= RTE_PTYPE_L2_ETHER_QINQ;
  93                         break;
  94                 case NPC_LT_LB_CTAG:
  95                         val |= RTE_PTYPE_L2_ETHER_VLAN;
  96                         break;
  97                 }
  98
  99                 switch (lc) {
 100                 case NPC_LT_LC_ARP:
 101                         val |= RTE_PTYPE_L2_ETHER_ARP;
 102                         break;
 103                 case NPC_LT_LC_NSH:
 104                         val |= RTE_PTYPE_L2_ETHER_NSH;
 105                         break;
 106                 case NPC_LT_LC_FCOE:
 107                         val |= RTE_PTYPE_L2_ETHER_FCOE;
 108                         break;
 109                 case NPC_LT_LC_MPLS:
 110                         val |= RTE_PTYPE_L2_ETHER_MPLS;
 111                         break;
 112                 case NPC_LT_LC_IP:
 113                         val |= RTE_PTYPE_L3_IPV4;
 114                         break;
 115                 case NPC_LT_LC_IP_OPT:
 116                         val |= RTE_PTYPE_L3_IPV4_EXT;
 117                         break;
 118                 case NPC_LT_LC_IP6:
 119                         val |= RTE_PTYPE_L3_IPV6;
 120                         break;
 121                 case NPC_LT_LC_IP6_EXT:
 122                         val |= RTE_PTYPE_L3_IPV6_EXT;
 123                         break;
 124                 case NPC_LT_LC_PTP:
 125                         val |= RTE_PTYPE_L2_ETHER_TIMESYNC;
 126                         break;
 127                 }
 128
 129                 switch (ld) {
 130                 case NPC_LT_LD_TCP:
 131                         val |= RTE_PTYPE_L4_TCP;
 132                         break;
 133                 case NPC_LT_LD_UDP:
 134                         val |= RTE_PTYPE_L4_UDP;
 135                         break;
 136                 case NPC_LT_LD_SCTP:
 137                         val |= RTE_PTYPE_L4_SCTP;
 138                         break;
 139                 case NPC_LT_LD_ICMP:
 140                         val |= RTE_PTYPE_L4_ICMP;
 141                         break;
 142                 case NPC_LT_LD_IGMP:
 143                         val |= RTE_PTYPE_L4_IGMP;
 144                         break;
 145                 case NPC_LT_LD_GRE:
 146                         val |= RTE_PTYPE_TUNNEL_GRE;
 147                         break;
 148                 case NPC_LT_LD_NVGRE:
 149                         val |= RTE_PTYPE_TUNNEL_NVGRE;
 150                         break;
 151                 case NPC_LT_LD_ESP:
 152                         val |= RTE_PTYPE_TUNNEL_ESP;
 153                         break;
 154                 }
 155
 156                 switch (le) {
 157                 case NPC_LT_LE_VXLAN:
 158                         val |= RTE_PTYPE_TUNNEL_VXLAN;
 159                         break;
 160                 case NPC_LT_LE_VXLANGPE:
 161                         val |= RTE_PTYPE_TUNNEL_VXLAN_GPE;
 162                         break;
 163                 case NPC_LT_LE_GENEVE:
 164                         val |= RTE_PTYPE_TUNNEL_GENEVE;
 165                         break;
 166                 case NPC_LT_LE_GTPC:
 167                         val |= RTE_PTYPE_TUNNEL_GTPC;
 168                         break;
 169                 case NPC_LT_LE_GTPU:
 170                         val |= RTE_PTYPE_TUNNEL_GTPU;
 171                         break;
 172                 case NPC_LT_LE_TU_MPLS_IN_GRE:
 173                         val |= RTE_PTYPE_TUNNEL_MPLS_IN_GRE;
 174                         break;
 175                 case NPC_LT_LE_TU_MPLS_IN_UDP:
 176                         val |= RTE_PTYPE_TUNNEL_MPLS_IN_UDP;
 177                         break;
 178                 }
 179                 ptype[idx] = val;
 180         }
 181 }
 182
 183 #define TU_SHIFT(x) ((x) >> PTYPE_WIDTH)
 184 static void
 185 nix_create_tunnel_ptype_array(uint16_t *ptype)
 186 {
 187         uint8_t le, lf, lg;
 188         uint16_t idx, val;
 189
 190         /* Skip non tunnel ptype array memory */
 191         ptype = ptype + PTYPE_NON_TUNNEL_ARRAY_SZ;
 192
 193         for (idx = 0; idx < PTYPE_TUNNEL_ARRAY_SZ; idx++) {
 194                 le = idx & 0xF;
 195                 lf = (idx & 0xF0) >> 4;
 196                 lg = (idx & 0xF00) >> 8;
 197                 val = RTE_PTYPE_UNKNOWN;
 198
 199                 switch (le) {
 200                 case NPC_LT_LF_TU_ETHER:
 201                         val |= TU_SHIFT(RTE_PTYPE_INNER_L2_ETHER);
 202                         break;
 203                 }
 204                 switch (lf) {
 205                 case NPC_LT_LG_TU_IP:
 206                         val |= TU_SHIFT(RTE_PTYPE_INNER_L3_IPV4);
 207                         break;
 208                 case NPC_LT_LG_TU_IP6:
 209                         val |= TU_SHIFT(RTE_PTYPE_INNER_L3_IPV6);
 210                         break;
 211                 }
 212                 switch (lg) {
 213                 case NPC_LT_LH_TU_TCP:
 214                         val |= TU_SHIFT(RTE_PTYPE_INNER_L4_TCP);
 215                         break;
 216                 case NPC_LT_LH_TU_UDP:
 217                         val |= TU_SHIFT(RTE_PTYPE_INNER_L4_UDP);
 218                         break;
 219                 case NPC_LT_LH_TU_SCTP:
 220                         val |= TU_SHIFT(RTE_PTYPE_INNER_L4_SCTP);
 221                         break;
 222                 case NPC_LT_LH_TU_ICMP:
 223                         val |= TU_SHIFT(RTE_PTYPE_INNER_L4_ICMP);
 224                         break;
 225                 }
 226
 227                 ptype[idx] = val;
 228         }
 229 }
 230
 231 static void
 232 nix_create_rx_ol_flags_array(void *mem)
 233 {
 234         uint16_t idx, errcode, errlev;
 235         uint32_t val, *ol_flags;
 236
 237         /* Skip ptype array memory */
 238         ol_flags = (uint32_t *)((uint8_t *)mem + PTYPE_ARRAY_SZ);
 239
 240         for (idx = 0; idx < BIT(ERRCODE_ERRLEN_WIDTH); idx++) {
 241                 errlev = idx & 0xf;
 242                 errcode = (idx & 0xff0) >> 4;
 243
 244                 val = PKT_RX_IP_CKSUM_UNKNOWN;
 245                 val |= PKT_RX_L4_CKSUM_UNKNOWN;
 246                 val |= PKT_RX_OUTER_L4_CKSUM_UNKNOWN;
 247
 248                 switch (errlev) {
 249                 case NPC_ERRLEV_RE:
 250                         /* Mark all errors as BAD checksum errors */
 251                         if (errcode) {
 252                                 val |= PKT_RX_IP_CKSUM_BAD;
 253                                 val |= PKT_RX_L4_CKSUM_BAD;
 254                         } else {
 255                                 val |= PKT_RX_IP_CKSUM_GOOD;
 256                                 val |= PKT_RX_L4_CKSUM_GOOD;
 257                         }
 258                         break;
 259                 case NPC_ERRLEV_LC:
 260                         if (errcode == NPC_EC_OIP4_CSUM ||
 261                             errcode == NPC_EC_IP_FRAG_OFFSET_1) {
 262                                 val |= PKT_RX_IP_CKSUM_BAD;
 263                                 val |= PKT_RX_EIP_CKSUM_BAD;
 264                         } else {
 265                                 val |= PKT_RX_IP_CKSUM_GOOD;
 266                         }
 267                         break;
 268                 case NPC_ERRLEV_LG:
 269                         if (errcode == NPC_EC_IIP4_CSUM)
 270                                 val |= PKT_RX_IP_CKSUM_BAD;
 271                         else
 272                                 val |= PKT_RX_IP_CKSUM_GOOD;
 273                         break;
 274                 case NPC_ERRLEV_NIX:
 275                         if (errcode == NIX_RX_PERRCODE_OL4_CHK) {
 276                                 val |= PKT_RX_OUTER_L4_CKSUM_BAD;
 277                                 val |= PKT_RX_L4_CKSUM_BAD;
 278                         } else if (errcode == NIX_RX_PERRCODE_IL4_CHK) {
 279                                 val |= PKT_RX_L4_CKSUM_BAD;
 280                         } else {
 281                                 val |= PKT_RX_IP_CKSUM_GOOD;
 282                                 val |= PKT_RX_L4_CKSUM_GOOD;
 283                         }
 284                         break;
 285                 }
 286
 287                 ol_flags[idx] = val;
 288         }
 289 }
 290
 291 void *
 292 otx2_nix_fastpath_lookup_mem_get(void)
 293 {
 294         const char name[] = "otx2_nix_fastpath_lookup_mem";
 295         const struct rte_memzone *mz;
 296         void *mem;
 297
 298         mz = rte_memzone_lookup(name);
 299         if (mz != NULL)
 300                 return mz->addr;
 301
 302         /* Request for the first time */
 303         mz = rte_memzone_reserve_aligned(name, LOOKUP_ARRAY_SZ,
 304                                          SOCKET_ID_ANY, 0, OTX2_ALIGN);
 305         if (mz != NULL) {
 306                 mem = mz->addr;
 307                 /* Form the ptype array lookup memory */
 308                 nix_create_non_tunnel_ptype_array(mem);
 309                 nix_create_tunnel_ptype_array(mem);
 310                 /* Form the rx ol_flags based on errcode */
 311                 nix_create_rx_ol_flags_array(mem);
 312                 return mem;
 313         }
 314         return NULL;
 315 }