drivers/net/cxgbe/cxgbe_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Chelsio Communications.
   3  * All rights reserved.
   4  */
   5 #include "base/common.h"
   6 #include "cxgbe_flow.h"
   7
   8 #define __CXGBE_FILL_FS(__v, __m, fs, elem, e) \
   9 do { \
  10         if ((fs)->mask.elem && ((fs)->val.elem != (__v))) \
  11                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM, \
  12                                           NULL, "Redefined match item with" \
  13                                           " different values found"); \
  14         (fs)->val.elem = (__v); \
  15         (fs)->mask.elem = (__m); \
  16 } while (0)
  17
  18 #define __CXGBE_FILL_FS_MEMCPY(__v, __m, fs, elem) \
  19 do { \
  20         memcpy(&(fs)->val.elem, &(__v), sizeof(__v)); \
  21         memcpy(&(fs)->mask.elem, &(__m), sizeof(__m)); \
  22 } while (0)
  23
  24 #define CXGBE_FILL_FS(v, m, elem) \
  25         __CXGBE_FILL_FS(v, m, fs, elem, e)
  26
  27 #define CXGBE_FILL_FS_MEMCPY(v, m, elem) \
  28         __CXGBE_FILL_FS_MEMCPY(v, m, fs, elem)
  29
  30 static int
  31 cxgbe_validate_item(const struct rte_flow_item *i, struct rte_flow_error *e)
  32 {
  33         /* rte_flow specification does not allow it. */
  34         if (!i->spec && (i->mask ||  i->last))
  35                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
  36                                    i, "last or mask given without spec");
  37         /*
  38          * We don't support it.
  39          * Although, we can support values in last as 0's or last == spec.
  40          * But this will not provide user with any additional functionality
  41          * and will only increase the complexity for us.
  42          */
  43         if (i->last)
  44                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
  45                                    i, "last is not supported by chelsio pmd");
  46         return 0;
  47 }
  48
  49 /**
  50  * Apart from the 4-tuple IPv4/IPv6 - TCP/UDP information,
  51  * there's only 40-bits available to store match fields.
  52  * So, to save space, optimize filter spec for some common
  53  * known fields that hardware can parse against incoming
  54  * packets automatically.
  55  */
  56 static void
  57 cxgbe_tweak_filter_spec(struct adapter *adap,
  58                         struct ch_filter_specification *fs)
  59 {
  60         /* Save 16-bit ethertype field space, by setting corresponding
  61          * 1-bit flags in the filter spec for common known ethertypes.
  62          * When hardware sees these flags, it automatically infers and
  63          * matches incoming packets against the corresponding ethertype.
  64          */
  65         if (fs->mask.ethtype == 0xffff) {
  66                 switch (fs->val.ethtype) {
  67                 case RTE_ETHER_TYPE_IPV4:
  68                         if (adap->params.tp.ethertype_shift < 0) {
  69                                 fs->type = FILTER_TYPE_IPV4;
  70                                 fs->val.ethtype = 0;
  71                                 fs->mask.ethtype = 0;
  72                         }
  73                         break;
  74                 case RTE_ETHER_TYPE_IPV6:
  75                         if (adap->params.tp.ethertype_shift < 0) {
  76                                 fs->type = FILTER_TYPE_IPV6;
  77                                 fs->val.ethtype = 0;
  78                                 fs->mask.ethtype = 0;
  79                         }
  80                         break;
  81                 case RTE_ETHER_TYPE_VLAN:
  82                         if (adap->params.tp.ethertype_shift < 0 &&
  83                             adap->params.tp.vlan_shift >= 0) {
  84                                 fs->val.ivlan_vld = 1;
  85                                 fs->mask.ivlan_vld = 1;
  86                                 fs->val.ethtype = 0;
  87                                 fs->mask.ethtype = 0;
  88                         }
  89                         break;
  90                 case RTE_ETHER_TYPE_QINQ:
  91                         if (adap->params.tp.ethertype_shift < 0 &&
  92                             adap->params.tp.vnic_shift >= 0) {
  93                                 fs->val.ovlan_vld = 1;
  94                                 fs->mask.ovlan_vld = 1;
  95                                 fs->val.ethtype = 0;
  96                                 fs->mask.ethtype = 0;
  97                         }
  98                         break;
  99                 default:
 100                         break;
 101                 }
 102         }
 103 }
 104
 105 static void
 106 cxgbe_fill_filter_region(struct adapter *adap,
 107                          struct ch_filter_specification *fs)
 108 {
 109         struct tp_params *tp = &adap->params.tp;
 110         u64 hash_filter_mask = tp->hash_filter_mask;
 111         u64 ntuple_mask = 0;
 112
 113         fs->cap = 0;
 114
 115         if (!is_hashfilter(adap))
 116                 return;
 117
 118         if (fs->type) {
 119                 uint8_t biton[16] = {0xff, 0xff, 0xff, 0xff,
 120                                      0xff, 0xff, 0xff, 0xff,
 121                                      0xff, 0xff, 0xff, 0xff,
 122                                      0xff, 0xff, 0xff, 0xff};
 123                 uint8_t bitoff[16] = {0};
 124
 125                 if (!memcmp(fs->val.lip, bitoff, sizeof(bitoff)) ||
 126                     !memcmp(fs->val.fip, bitoff, sizeof(bitoff)) ||
 127                     memcmp(fs->mask.lip, biton, sizeof(biton)) ||
 128                     memcmp(fs->mask.fip, biton, sizeof(biton)))
 129                         return;
 130         } else {
 131                 uint32_t biton  = 0xffffffff;
 132                 uint32_t bitoff = 0x0U;
 133
 134                 if (!memcmp(fs->val.lip, &bitoff, sizeof(bitoff)) ||
 135                     !memcmp(fs->val.fip, &bitoff, sizeof(bitoff)) ||
 136                     memcmp(fs->mask.lip, &biton, sizeof(biton)) ||
 137                     memcmp(fs->mask.fip, &biton, sizeof(biton)))
 138                         return;
 139         }
 140
 141         if (!fs->val.lport || fs->mask.lport != 0xffff)
 142                 return;
 143         if (!fs->val.fport || fs->mask.fport != 0xffff)
 144                 return;
 145
 146         if (tp->protocol_shift >= 0)
 147                 ntuple_mask |= (u64)fs->mask.proto << tp->protocol_shift;
 148         if (tp->ethertype_shift >= 0)
 149                 ntuple_mask |= (u64)fs->mask.ethtype << tp->ethertype_shift;
 150         if (tp->port_shift >= 0)
 151                 ntuple_mask |= (u64)fs->mask.iport << tp->port_shift;
 152         if (tp->macmatch_shift >= 0)
 153                 ntuple_mask |= (u64)fs->mask.macidx << tp->macmatch_shift;
 154         if (tp->vlan_shift >= 0 && fs->mask.ivlan_vld)
 155                 ntuple_mask |= (u64)(F_FT_VLAN_VLD | fs->mask.ivlan) <<
 156                                tp->vlan_shift;
 157         if (tp->vnic_shift >= 0) {
 158                 if (fs->mask.ovlan_vld)
 159                         ntuple_mask |= (u64)(fs->val.ovlan_vld << 16 |
 160                                              fs->mask.ovlan) << tp->vnic_shift;
 161                 else if (fs->mask.pfvf_vld)
 162                         ntuple_mask |= (u64)((fs->mask.pfvf_vld << 16) |
 163                                              (fs->mask.pf << 13)) <<
 164                                              tp->vnic_shift;
 165         }
 166         if (tp->tos_shift >= 0)
 167                 ntuple_mask |= (u64)fs->mask.tos << tp->tos_shift;
 168
 169         if (ntuple_mask != hash_filter_mask)
 170                 return;
 171
 172         fs->cap = 1;    /* use hash region */
 173 }
 174
 175 static int
 176 ch_rte_parsetype_eth(const void *dmask, const struct rte_flow_item *item,
 177                      struct ch_filter_specification *fs,
 178                      struct rte_flow_error *e)
 179 {
 180         const struct rte_flow_item_eth *spec = item->spec;
 181         const struct rte_flow_item_eth *umask = item->mask;
 182         const struct rte_flow_item_eth *mask;
 183
 184         /* If user has not given any mask, then use chelsio supported mask. */
 185         mask = umask ? umask : (const struct rte_flow_item_eth *)dmask;
 186
 187         if (!spec)
 188                 return 0;
 189
 190         /* we don't support SRC_MAC filtering*/
 191         if (!rte_is_zero_ether_addr(&mask->src))
 192                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 193                                           item,
 194                                           "src mac filtering not supported");
 195
 196         if (!rte_is_zero_ether_addr(&mask->dst)) {
 197                 const u8 *addr = (const u8 *)&spec->dst.addr_bytes[0];
 198                 const u8 *m = (const u8 *)&mask->dst.addr_bytes[0];
 199                 struct rte_flow *flow = (struct rte_flow *)fs->private;
 200                 struct port_info *pi = (struct port_info *)
 201                                         (flow->dev->data->dev_private);
 202                 int idx;
 203
 204                 idx = cxgbe_mpstcam_alloc(pi, addr, m);
 205                 if (idx <= 0)
 206                         return rte_flow_error_set(e, idx,
 207                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 208                                                   NULL, "unable to allocate mac"
 209                                                   " entry in h/w");
 210                 CXGBE_FILL_FS(idx, 0x1ff, macidx);
 211         }
 212
 213         CXGBE_FILL_FS(be16_to_cpu(spec->type),
 214                       be16_to_cpu(mask->type), ethtype);
 215
 216         return 0;
 217 }
 218
 219 static int
 220 ch_rte_parsetype_port(const void *dmask, const struct rte_flow_item *item,
 221                       struct ch_filter_specification *fs,
 222                       struct rte_flow_error *e)
 223 {
 224         const struct rte_flow_item_phy_port *val = item->spec;
 225         const struct rte_flow_item_phy_port *umask = item->mask;
 226         const struct rte_flow_item_phy_port *mask;
 227
 228         mask = umask ? umask : (const struct rte_flow_item_phy_port *)dmask;
 229
 230         if (!val)
 231                 return 0; /* Wildcard, match all physical ports */
 232
 233         if (val->index > 0x7)
 234                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
 235                                           item,
 236                                           "port index upto 0x7 is supported");
 237
 238         CXGBE_FILL_FS(val->index, mask->index, iport);
 239
 240         return 0;
 241 }
 242
 243 static int
 244 ch_rte_parsetype_vlan(const void *dmask, const struct rte_flow_item *item,
 245                       struct ch_filter_specification *fs,
 246                       struct rte_flow_error *e)
 247 {
 248         const struct rte_flow_item_vlan *spec = item->spec;
 249         const struct rte_flow_item_vlan *umask = item->mask;
 250         const struct rte_flow_item_vlan *mask;
 251
 252         /* If user has not given any mask, then use chelsio supported mask. */
 253         mask = umask ? umask : (const struct rte_flow_item_vlan *)dmask;
 254
 255         if (!fs->mask.ethtype)
 256                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
 257                                           item,
 258                                           "Can't parse VLAN item without knowing ethertype");
 259
 260         /* If ethertype is already set and is not VLAN (0x8100) or
 261          * QINQ(0x88A8), then don't proceed further. Otherwise,
 262          * reset the outer ethertype, so that it can be replaced by
 263          * innermost ethertype. Note that hardware will automatically
 264          * match against VLAN or QINQ packets, based on 'ivlan_vld' or
 265          * 'ovlan_vld' bit set in Chelsio filter spec, respectively.
 266          */
 267         if (fs->mask.ethtype) {
 268                 if (fs->val.ethtype != RTE_ETHER_TYPE_VLAN &&
 269                     fs->val.ethtype != RTE_ETHER_TYPE_QINQ)
 270                         return rte_flow_error_set(e, EINVAL,
 271                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 272                                                   item,
 273                                                   "Ethertype must be 0x8100 or 0x88a8");
 274         }
 275
 276         if (fs->val.ethtype == RTE_ETHER_TYPE_QINQ) {
 277                 CXGBE_FILL_FS(1, 1, ovlan_vld);
 278                 if (spec) {
 279                         CXGBE_FILL_FS(be16_to_cpu(spec->tci),
 280                                       be16_to_cpu(mask->tci), ovlan);
 281
 282                         fs->mask.ethtype = 0;
 283                         fs->val.ethtype = 0;
 284                 }
 285         } else if (fs->val.ethtype == RTE_ETHER_TYPE_VLAN) {
 286                 CXGBE_FILL_FS(1, 1, ivlan_vld);
 287                 if (spec) {
 288                         CXGBE_FILL_FS(be16_to_cpu(spec->tci),
 289                                       be16_to_cpu(mask->tci), ivlan);
 290
 291                         fs->mask.ethtype = 0;
 292                         fs->val.ethtype = 0;
 293                 }
 294         }
 295
 296         if (spec)
 297                 CXGBE_FILL_FS(be16_to_cpu(spec->inner_type),
 298                               be16_to_cpu(mask->inner_type), ethtype);
 299
 300         return 0;
 301 }
 302
 303 static int
 304 ch_rte_parsetype_pf(const void *dmask __rte_unused,
 305                     const struct rte_flow_item *item __rte_unused,
 306                     struct ch_filter_specification *fs,
 307                     struct rte_flow_error *e __rte_unused)
 308 {
 309         struct rte_flow *flow = (struct rte_flow *)fs->private;
 310         struct rte_eth_dev *dev = flow->dev;
 311         struct adapter *adap = ethdev2adap(dev);
 312
 313         CXGBE_FILL_FS(1, 1, pfvf_vld);
 314
 315         CXGBE_FILL_FS(adap->pf, 0x7, pf);
 316         return 0;
 317 }
 318
 319 static int
 320 ch_rte_parsetype_udp(const void *dmask, const struct rte_flow_item *item,
 321                      struct ch_filter_specification *fs,
 322                      struct rte_flow_error *e)
 323 {
 324         const struct rte_flow_item_udp *val = item->spec;
 325         const struct rte_flow_item_udp *umask = item->mask;
 326         const struct rte_flow_item_udp *mask;
 327
 328         mask = umask ? umask : (const struct rte_flow_item_udp *)dmask;
 329
 330         if (mask->hdr.dgram_len || mask->hdr.dgram_cksum)
 331                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 332                                           item,
 333                                           "udp: only src/dst port supported");
 334
 335         CXGBE_FILL_FS(IPPROTO_UDP, 0xff, proto);
 336         if (!val)
 337                 return 0;
 338         CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
 339                       be16_to_cpu(mask->hdr.src_port), fport);
 340         CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
 341                       be16_to_cpu(mask->hdr.dst_port), lport);
 342         return 0;
 343 }
 344
 345 static int
 346 ch_rte_parsetype_tcp(const void *dmask, const struct rte_flow_item *item,
 347                      struct ch_filter_specification *fs,
 348                      struct rte_flow_error *e)
 349 {
 350         const struct rte_flow_item_tcp *val = item->spec;
 351         const struct rte_flow_item_tcp *umask = item->mask;
 352         const struct rte_flow_item_tcp *mask;
 353
 354         mask = umask ? umask : (const struct rte_flow_item_tcp *)dmask;
 355
 356         if (mask->hdr.sent_seq || mask->hdr.recv_ack || mask->hdr.data_off ||
 357             mask->hdr.tcp_flags || mask->hdr.rx_win || mask->hdr.cksum ||
 358             mask->hdr.tcp_urp)
 359                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 360                                           item,
 361                                           "tcp: only src/dst port supported");
 362
 363         CXGBE_FILL_FS(IPPROTO_TCP, 0xff, proto);
 364         if (!val)
 365                 return 0;
 366         CXGBE_FILL_FS(be16_to_cpu(val->hdr.src_port),
 367                       be16_to_cpu(mask->hdr.src_port), fport);
 368         CXGBE_FILL_FS(be16_to_cpu(val->hdr.dst_port),
 369                       be16_to_cpu(mask->hdr.dst_port), lport);
 370         return 0;
 371 }
 372
 373 static int
 374 ch_rte_parsetype_ipv4(const void *dmask, const struct rte_flow_item *item,
 375                       struct ch_filter_specification *fs,
 376                       struct rte_flow_error *e)
 377 {
 378         const struct rte_flow_item_ipv4 *val = item->spec;
 379         const struct rte_flow_item_ipv4 *umask = item->mask;
 380         const struct rte_flow_item_ipv4 *mask;
 381
 382         mask = umask ? umask : (const struct rte_flow_item_ipv4 *)dmask;
 383
 384         if (mask->hdr.time_to_live)
 385                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 386                                           item, "ttl is not supported");
 387
 388         if (fs->mask.ethtype &&
 389             (fs->val.ethtype != RTE_ETHER_TYPE_IPV4))
 390                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
 391                                           item,
 392                                           "Couldn't find IPv4 ethertype");
 393         fs->type = FILTER_TYPE_IPV4;
 394         if (!val)
 395                 return 0; /* ipv4 wild card */
 396
 397         CXGBE_FILL_FS(val->hdr.next_proto_id, mask->hdr.next_proto_id, proto);
 398         CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr, lip);
 399         CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr, fip);
 400         CXGBE_FILL_FS(val->hdr.type_of_service, mask->hdr.type_of_service, tos);
 401
 402         return 0;
 403 }
 404
 405 static int
 406 ch_rte_parsetype_ipv6(const void *dmask, const struct rte_flow_item *item,
 407                       struct ch_filter_specification *fs,
 408                       struct rte_flow_error *e)
 409 {
 410         const struct rte_flow_item_ipv6 *val = item->spec;
 411         const struct rte_flow_item_ipv6 *umask = item->mask;
 412         const struct rte_flow_item_ipv6 *mask;
 413         u32 vtc_flow, vtc_flow_mask;
 414
 415         mask = umask ? umask : (const struct rte_flow_item_ipv6 *)dmask;
 416
 417         vtc_flow_mask = be32_to_cpu(mask->hdr.vtc_flow);
 418
 419         if (vtc_flow_mask & RTE_IPV6_HDR_FL_MASK ||
 420             mask->hdr.payload_len || mask->hdr.hop_limits)
 421                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 422                                           item,
 423                                           "flow/hop are not supported");
 424
 425         if (fs->mask.ethtype &&
 426             (fs->val.ethtype != RTE_ETHER_TYPE_IPV6))
 427                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
 428                                           item,
 429                                           "Couldn't find IPv6 ethertype");
 430         fs->type = FILTER_TYPE_IPV6;
 431         if (!val)
 432                 return 0; /* ipv6 wild card */
 433
 434         CXGBE_FILL_FS(val->hdr.proto, mask->hdr.proto, proto);
 435
 436         vtc_flow = be32_to_cpu(val->hdr.vtc_flow);
 437         CXGBE_FILL_FS((vtc_flow & RTE_IPV6_HDR_TC_MASK) >>
 438                       RTE_IPV6_HDR_TC_SHIFT,
 439                       (vtc_flow_mask & RTE_IPV6_HDR_TC_MASK) >>
 440                       RTE_IPV6_HDR_TC_SHIFT,
 441                       tos);
 442
 443         CXGBE_FILL_FS_MEMCPY(val->hdr.dst_addr, mask->hdr.dst_addr, lip);
 444         CXGBE_FILL_FS_MEMCPY(val->hdr.src_addr, mask->hdr.src_addr, fip);
 445
 446         return 0;
 447 }
 448
 449 static int
 450 cxgbe_rtef_parse_attr(struct rte_flow *flow, const struct rte_flow_attr *attr,
 451                       struct rte_flow_error *e)
 452 {
 453         if (attr->egress)
 454                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR,
 455                                           attr, "attribute:<egress> is"
 456                                           " not supported !");
 457         if (attr->group > 0)
 458                 return rte_flow_error_set(e, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR,
 459                                           attr, "group parameter is"
 460                                           " not supported.");
 461
 462         flow->fidx = attr->priority ? attr->priority - 1 : FILTER_ID_MAX;
 463
 464         return 0;
 465 }
 466
 467 static inline int check_rxq(struct rte_eth_dev *dev, uint16_t rxq)
 468 {
 469         struct port_info *pi = ethdev2pinfo(dev);
 470
 471         if (rxq > pi->n_rx_qsets)
 472                 return -EINVAL;
 473         return 0;
 474 }
 475
 476 static int cxgbe_validate_fidxondel(struct filter_entry *f, unsigned int fidx)
 477 {
 478         struct adapter *adap = ethdev2adap(f->dev);
 479         struct ch_filter_specification fs = f->fs;
 480         u8 nentries;
 481
 482         if (fidx >= adap->tids.nftids) {
 483                 dev_err(adap, "invalid flow index %d.\n", fidx);
 484                 return -EINVAL;
 485         }
 486
 487         nentries = cxgbe_filter_slots(adap, fs.type);
 488         if (!cxgbe_is_filter_set(&adap->tids, fidx, nentries)) {
 489                 dev_err(adap, "Already free fidx:%d f:%p\n", fidx, f);
 490                 return -EINVAL;
 491         }
 492
 493         return 0;
 494 }
 495
 496 static int
 497 cxgbe_validate_fidxonadd(struct ch_filter_specification *fs,
 498                          struct adapter *adap, unsigned int fidx)
 499 {
 500         u8 nentries;
 501
 502         nentries = cxgbe_filter_slots(adap, fs->type);
 503         if (cxgbe_is_filter_set(&adap->tids, fidx, nentries)) {
 504                 dev_err(adap, "filter index: %d is busy.\n", fidx);
 505                 return -EBUSY;
 506         }
 507
 508         if (fidx >= adap->tids.nftids) {
 509                 dev_err(adap, "filter index (%u) >= max(%u)\n",
 510                         fidx, adap->tids.nftids);
 511                 return -ERANGE;
 512         }
 513
 514         return 0;
 515 }
 516
 517 static int
 518 cxgbe_verify_fidx(struct rte_flow *flow, unsigned int fidx, uint8_t del)
 519 {
 520         if (flow->fs.cap)
 521                 return 0; /* Hash filters */
 522         return del ? cxgbe_validate_fidxondel(flow->f, fidx) :
 523                 cxgbe_validate_fidxonadd(&flow->fs,
 524                                          ethdev2adap(flow->dev), fidx);
 525 }
 526
 527 static int cxgbe_get_fidx(struct rte_flow *flow, unsigned int *fidx)
 528 {
 529         struct ch_filter_specification *fs = &flow->fs;
 530         struct adapter *adap = ethdev2adap(flow->dev);
 531
 532         /* For tcam get the next available slot, if default value specified */
 533         if (flow->fidx == FILTER_ID_MAX) {
 534                 u8 nentries;
 535                 int idx;
 536
 537                 nentries = cxgbe_filter_slots(adap, fs->type);
 538                 idx = cxgbe_alloc_ftid(adap, nentries);
 539                 if (idx < 0) {
 540                         dev_err(adap, "unable to get a filter index in tcam\n");
 541                         return -ENOMEM;
 542                 }
 543                 *fidx = (unsigned int)idx;
 544         } else {
 545                 *fidx = flow->fidx;
 546         }
 547
 548         return 0;
 549 }
 550
 551 static int
 552 cxgbe_get_flow_item_index(const struct rte_flow_item items[], u32 type)
 553 {
 554         const struct rte_flow_item *i;
 555         int j, index = -ENOENT;
 556
 557         for (i = items, j = 0; i->type != RTE_FLOW_ITEM_TYPE_END; i++, j++) {
 558                 if (i->type == type) {
 559                         index = j;
 560                         break;
 561                 }
 562         }
 563
 564         return index;
 565 }
 566
 567 static int
 568 ch_rte_parse_nat(uint8_t nmode, struct ch_filter_specification *fs)
 569 {
 570         /* nmode:
 571          * BIT_0 = [src_ip],   BIT_1 = [dst_ip]
 572          * BIT_2 = [src_port], BIT_3 = [dst_port]
 573          *
 574          * Only below cases are supported as per our spec.
 575          */
 576         switch (nmode) {
 577         case 0:  /* 0000b */
 578                 fs->nat_mode = NAT_MODE_NONE;
 579                 break;
 580         case 2:  /* 0010b */
 581                 fs->nat_mode = NAT_MODE_DIP;
 582                 break;
 583         case 5:  /* 0101b */
 584                 fs->nat_mode = NAT_MODE_SIP_SP;
 585                 break;
 586         case 7:  /* 0111b */
 587                 fs->nat_mode = NAT_MODE_DIP_SIP_SP;
 588                 break;
 589         case 10: /* 1010b */
 590                 fs->nat_mode = NAT_MODE_DIP_DP;
 591                 break;
 592         case 11: /* 1011b */
 593                 fs->nat_mode = NAT_MODE_DIP_DP_SIP;
 594                 break;
 595         case 14: /* 1110b */
 596                 fs->nat_mode = NAT_MODE_DIP_DP_SP;
 597                 break;
 598         case 15: /* 1111b */
 599                 fs->nat_mode = NAT_MODE_ALL;
 600                 break;
 601         default:
 602                 return -EINVAL;
 603         }
 604
 605         return 0;
 606 }
 607
 608 static int
 609 ch_rte_parse_atype_switch(const struct rte_flow_action *a,
 610                           const struct rte_flow_item items[],
 611                           uint8_t *nmode,
 612                           struct ch_filter_specification *fs,
 613                           struct rte_flow_error *e)
 614 {
 615         const struct rte_flow_action_of_set_vlan_vid *vlanid;
 616         const struct rte_flow_action_of_set_vlan_pcp *vlanpcp;
 617         const struct rte_flow_action_of_push_vlan *pushvlan;
 618         const struct rte_flow_action_set_ipv4 *ipv4;
 619         const struct rte_flow_action_set_ipv6 *ipv6;
 620         const struct rte_flow_action_set_tp *tp_port;
 621         const struct rte_flow_action_phy_port *port;
 622         int item_index;
 623         u16 tmp_vlan;
 624
 625         switch (a->type) {
 626         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
 627                 vlanid = (const struct rte_flow_action_of_set_vlan_vid *)
 628                           a->conf;
 629                 /* If explicitly asked to push a new VLAN header,
 630                  * then don't set rewrite mode. Otherwise, the
 631                  * incoming VLAN packets will get their VLAN fields
 632                  * rewritten, instead of adding an additional outer
 633                  * VLAN header.
 634                  */
 635                 if (fs->newvlan != VLAN_INSERT)
 636                         fs->newvlan = VLAN_REWRITE;
 637                 tmp_vlan = fs->vlan & 0xe000;
 638                 fs->vlan = (be16_to_cpu(vlanid->vlan_vid) & 0xfff) | tmp_vlan;
 639                 break;
 640         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
 641                 vlanpcp = (const struct rte_flow_action_of_set_vlan_pcp *)
 642                           a->conf;
 643                 /* If explicitly asked to push a new VLAN header,
 644                  * then don't set rewrite mode. Otherwise, the
 645                  * incoming VLAN packets will get their VLAN fields
 646                  * rewritten, instead of adding an additional outer
 647                  * VLAN header.
 648                  */
 649                 if (fs->newvlan != VLAN_INSERT)
 650                         fs->newvlan = VLAN_REWRITE;
 651                 tmp_vlan = fs->vlan & 0xfff;
 652                 fs->vlan = (vlanpcp->vlan_pcp << 13) | tmp_vlan;
 653                 break;
 654         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
 655                 pushvlan = (const struct rte_flow_action_of_push_vlan *)
 656                             a->conf;
 657                 if (be16_to_cpu(pushvlan->ethertype) != RTE_ETHER_TYPE_VLAN)
 658                         return rte_flow_error_set(e, EINVAL,
 659                                                   RTE_FLOW_ERROR_TYPE_ACTION, a,
 660                                                   "only ethertype 0x8100 "
 661                                                   "supported for push vlan.");
 662                 fs->newvlan = VLAN_INSERT;
 663                 break;
 664         case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
 665                 fs->newvlan = VLAN_REMOVE;
 666                 break;
 667         case RTE_FLOW_ACTION_TYPE_PHY_PORT:
 668                 port = (const struct rte_flow_action_phy_port *)a->conf;
 669                 fs->eport = port->index;
 670                 break;
 671         case RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC:
 672                 item_index = cxgbe_get_flow_item_index(items,
 673                                                        RTE_FLOW_ITEM_TYPE_IPV4);
 674                 if (item_index < 0)
 675                         return rte_flow_error_set(e, EINVAL,
 676                                                   RTE_FLOW_ERROR_TYPE_ACTION, a,
 677                                                   "No RTE_FLOW_ITEM_TYPE_IPV4 "
 678                                                   "found.");
 679
 680                 ipv4 = (const struct rte_flow_action_set_ipv4 *)a->conf;
 681                 memcpy(fs->nat_fip, &ipv4->ipv4_addr, sizeof(ipv4->ipv4_addr));
 682                 *nmode |= 1 << 0;
 683                 break;
 684         case RTE_FLOW_ACTION_TYPE_SET_IPV4_DST:
 685                 item_index = cxgbe_get_flow_item_index(items,
 686                                                        RTE_FLOW_ITEM_TYPE_IPV4);
 687                 if (item_index < 0)
 688                         return rte_flow_error_set(e, EINVAL,
 689                                                   RTE_FLOW_ERROR_TYPE_ACTION, a,
 690                                                   "No RTE_FLOW_ITEM_TYPE_IPV4 "
 691                                                   "found.");
 692
 693                 ipv4 = (const struct rte_flow_action_set_ipv4 *)a->conf;
 694                 memcpy(fs->nat_lip, &ipv4->ipv4_addr, sizeof(ipv4->ipv4_addr));
 695                 *nmode |= 1 << 1;
 696                 break;
 697         case RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC:
 698                 item_index = cxgbe_get_flow_item_index(items,
 699                                                        RTE_FLOW_ITEM_TYPE_IPV6);
 700                 if (item_index < 0)
 701                         return rte_flow_error_set(e, EINVAL,
 702                                                   RTE_FLOW_ERROR_TYPE_ACTION, a,
 703                                                   "No RTE_FLOW_ITEM_TYPE_IPV6 "
 704                                                   "found.");
 705
 706                 ipv6 = (const struct rte_flow_action_set_ipv6 *)a->conf;
 707                 memcpy(fs->nat_fip, ipv6->ipv6_addr, sizeof(ipv6->ipv6_addr));
 708                 *nmode |= 1 << 0;
 709                 break;
 710         case RTE_FLOW_ACTION_TYPE_SET_IPV6_DST:
 711                 item_index = cxgbe_get_flow_item_index(items,
 712                                                        RTE_FLOW_ITEM_TYPE_IPV6);
 713                 if (item_index < 0)
 714                         return rte_flow_error_set(e, EINVAL,
 715                                                   RTE_FLOW_ERROR_TYPE_ACTION, a,
 716                                                   "No RTE_FLOW_ITEM_TYPE_IPV6 "
 717                                                   "found.");
 718
 719                 ipv6 = (const struct rte_flow_action_set_ipv6 *)a->conf;
 720                 memcpy(fs->nat_lip, ipv6->ipv6_addr, sizeof(ipv6->ipv6_addr));
 721                 *nmode |= 1 << 1;
 722                 break;
 723         case RTE_FLOW_ACTION_TYPE_SET_TP_SRC:
 724                 item_index = cxgbe_get_flow_item_index(items,
 725                                                        RTE_FLOW_ITEM_TYPE_TCP);
 726                 if (item_index < 0) {
 727                         item_index =
 728                                 cxgbe_get_flow_item_index(items,
 729                                                 RTE_FLOW_ITEM_TYPE_UDP);
 730                         if (item_index < 0)
 731                                 return rte_flow_error_set(e, EINVAL,
 732                                                 RTE_FLOW_ERROR_TYPE_ACTION, a,
 733                                                 "No RTE_FLOW_ITEM_TYPE_TCP or "
 734                                                 "RTE_FLOW_ITEM_TYPE_UDP found");
 735                 }
 736
 737                 tp_port = (const struct rte_flow_action_set_tp *)a->conf;
 738                 fs->nat_fport = be16_to_cpu(tp_port->port);
 739                 *nmode |= 1 << 2;
 740                 break;
 741         case RTE_FLOW_ACTION_TYPE_SET_TP_DST:
 742                 item_index = cxgbe_get_flow_item_index(items,
 743                                                        RTE_FLOW_ITEM_TYPE_TCP);
 744                 if (item_index < 0) {
 745                         item_index =
 746                                 cxgbe_get_flow_item_index(items,
 747                                                 RTE_FLOW_ITEM_TYPE_UDP);
 748                         if (item_index < 0)
 749                                 return rte_flow_error_set(e, EINVAL,
 750                                                 RTE_FLOW_ERROR_TYPE_ACTION, a,
 751                                                 "No RTE_FLOW_ITEM_TYPE_TCP or "
 752                                                 "RTE_FLOW_ITEM_TYPE_UDP found");
 753                 }
 754
 755                 tp_port = (const struct rte_flow_action_set_tp *)a->conf;
 756                 fs->nat_lport = be16_to_cpu(tp_port->port);
 757                 *nmode |= 1 << 3;
 758                 break;
 759         case RTE_FLOW_ACTION_TYPE_MAC_SWAP:
 760                 item_index = cxgbe_get_flow_item_index(items,
 761                                                        RTE_FLOW_ITEM_TYPE_ETH);
 762                 if (item_index < 0)
 763                         return rte_flow_error_set(e, EINVAL,
 764                                                   RTE_FLOW_ERROR_TYPE_ACTION, a,
 765                                                   "No RTE_FLOW_ITEM_TYPE_ETH "
 766                                                   "found");
 767                 fs->swapmac = 1;
 768                 break;
 769         default:
 770                 /* We are not supposed to come here */
 771                 return rte_flow_error_set(e, EINVAL,
 772                                           RTE_FLOW_ERROR_TYPE_ACTION, a,
 773                                           "Action not supported");
 774         }
 775
 776         return 0;
 777 }
 778
 779 static int
 780 cxgbe_rtef_parse_actions(struct rte_flow *flow,
 781                          const struct rte_flow_item items[],
 782                          const struct rte_flow_action action[],
 783                          struct rte_flow_error *e)
 784 {
 785         struct ch_filter_specification *fs = &flow->fs;
 786         uint8_t nmode = 0, nat_ipv4 = 0, nat_ipv6 = 0;
 787         uint8_t vlan_set_vid = 0, vlan_set_pcp = 0;
 788         const struct rte_flow_action_queue *q;
 789         const struct rte_flow_action *a;
 790         char abit = 0;
 791         int ret;
 792
 793         for (a = action; a->type != RTE_FLOW_ACTION_TYPE_END; a++) {
 794                 switch (a->type) {
 795                 case RTE_FLOW_ACTION_TYPE_VOID:
 796                         continue;
 797                 case RTE_FLOW_ACTION_TYPE_DROP:
 798                         if (abit++)
 799                                 return rte_flow_error_set(e, EINVAL,
 800                                                 RTE_FLOW_ERROR_TYPE_ACTION, a,
 801                                                 "specify only 1 pass/drop");
 802                         fs->action = FILTER_DROP;
 803                         break;
 804                 case RTE_FLOW_ACTION_TYPE_QUEUE:
 805                         q = (const struct rte_flow_action_queue *)a->conf;
 806                         if (!q)
 807                                 return rte_flow_error_set(e, EINVAL,
 808                                                 RTE_FLOW_ERROR_TYPE_ACTION, q,
 809                                                 "specify rx queue index");
 810                         if (check_rxq(flow->dev, q->index))
 811                                 return rte_flow_error_set(e, EINVAL,
 812                                                 RTE_FLOW_ERROR_TYPE_ACTION, q,
 813                                                 "Invalid rx queue");
 814                         if (abit++)
 815                                 return rte_flow_error_set(e, EINVAL,
 816                                                 RTE_FLOW_ERROR_TYPE_ACTION, a,
 817                                                 "specify only 1 pass/drop");
 818                         fs->action = FILTER_PASS;
 819                         fs->dirsteer = 1;
 820                         fs->iq = q->index;
 821                         break;
 822                 case RTE_FLOW_ACTION_TYPE_COUNT:
 823                         fs->hitcnts = 1;
 824                         break;
 825                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
 826                         vlan_set_vid++;
 827                         goto action_switch;
 828                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
 829                         vlan_set_pcp++;
 830                         goto action_switch;
 831                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
 832                 case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
 833                 case RTE_FLOW_ACTION_TYPE_PHY_PORT:
 834                 case RTE_FLOW_ACTION_TYPE_MAC_SWAP:
 835                 case RTE_FLOW_ACTION_TYPE_SET_IPV4_SRC:
 836                 case RTE_FLOW_ACTION_TYPE_SET_IPV4_DST:
 837                         nat_ipv4++;
 838                         goto action_switch;
 839                 case RTE_FLOW_ACTION_TYPE_SET_IPV6_SRC:
 840                 case RTE_FLOW_ACTION_TYPE_SET_IPV6_DST:
 841                         nat_ipv6++;
 842                         goto action_switch;
 843                 case RTE_FLOW_ACTION_TYPE_SET_TP_SRC:
 844                 case RTE_FLOW_ACTION_TYPE_SET_TP_DST:
 845 action_switch:
 846                         /* We allow multiple switch actions, but switch is
 847                          * not compatible with either queue or drop
 848                          */
 849                         if (abit++ && fs->action != FILTER_SWITCH)
 850                                 return rte_flow_error_set(e, EINVAL,
 851                                                 RTE_FLOW_ERROR_TYPE_ACTION, a,
 852                                                 "overlapping action specified");
 853                         if (nat_ipv4 && nat_ipv6)
 854                                 return rte_flow_error_set(e, EINVAL,
 855                                         RTE_FLOW_ERROR_TYPE_ACTION, a,
 856                                         "Can't have one address ipv4 and the"
 857                                         " other ipv6");
 858
 859                         ret = ch_rte_parse_atype_switch(a, items, &nmode, fs,
 860                                                         e);
 861                         if (ret)
 862                                 return ret;
 863                         fs->action = FILTER_SWITCH;
 864                         break;
 865                 default:
 866                         /* Not supported action : return error */
 867                         return rte_flow_error_set(e, ENOTSUP,
 868                                                   RTE_FLOW_ERROR_TYPE_ACTION,
 869                                                   a, "Action not supported");
 870                 }
 871         }
 872
 873         if (fs->newvlan == VLAN_REWRITE && (!vlan_set_vid || !vlan_set_pcp))
 874                 return rte_flow_error_set(e, EINVAL,
 875                                           RTE_FLOW_ERROR_TYPE_ACTION, a,
 876                                           "Both OF_SET_VLAN_VID and "
 877                                           "OF_SET_VLAN_PCP must be specified");
 878
 879         if (ch_rte_parse_nat(nmode, fs))
 880                 return rte_flow_error_set(e, EINVAL,
 881                                           RTE_FLOW_ERROR_TYPE_ACTION, a,
 882                                           "invalid settings for swich action");
 883         return 0;
 884 }
 885
 886 static struct chrte_fparse parseitem[] = {
 887         [RTE_FLOW_ITEM_TYPE_ETH] = {
 888                 .fptr  = ch_rte_parsetype_eth,
 889                 .dmask = &(const struct rte_flow_item_eth){
 890                         .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 891                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
 892                         .type = 0xffff,
 893                 }
 894         },
 895
 896         [RTE_FLOW_ITEM_TYPE_PHY_PORT] = {
 897                 .fptr = ch_rte_parsetype_port,
 898                 .dmask = &(const struct rte_flow_item_phy_port){
 899                         .index = 0x7,
 900                 }
 901         },
 902
 903         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 904                 .fptr = ch_rte_parsetype_vlan,
 905                 .dmask = &(const struct rte_flow_item_vlan){
 906                         .tci = 0xffff,
 907                         .inner_type = 0xffff,
 908                 }
 909         },
 910
 911         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 912                 .fptr  = ch_rte_parsetype_ipv4,
 913                 .dmask = &(const struct rte_flow_item_ipv4) {
 914                         .hdr = {
 915                                 .src_addr = RTE_BE32(0xffffffff),
 916                                 .dst_addr = RTE_BE32(0xffffffff),
 917                                 .type_of_service = 0xff,
 918                         },
 919                 },
 920         },
 921
 922         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 923                 .fptr  = ch_rte_parsetype_ipv6,
 924                 .dmask = &(const struct rte_flow_item_ipv6) {
 925                         .hdr = {
 926                                 .src_addr =
 927                                         "\xff\xff\xff\xff\xff\xff\xff\xff"
 928                                         "\xff\xff\xff\xff\xff\xff\xff\xff",
 929                                 .dst_addr =
 930                                         "\xff\xff\xff\xff\xff\xff\xff\xff"
 931                                         "\xff\xff\xff\xff\xff\xff\xff\xff",
 932                                 .vtc_flow = RTE_BE32(0xff000000),
 933                         },
 934                 },
 935         },
 936
 937         [RTE_FLOW_ITEM_TYPE_UDP] = {
 938                 .fptr  = ch_rte_parsetype_udp,
 939                 .dmask = &rte_flow_item_udp_mask,
 940         },
 941
 942         [RTE_FLOW_ITEM_TYPE_TCP] = {
 943                 .fptr  = ch_rte_parsetype_tcp,
 944                 .dmask = &rte_flow_item_tcp_mask,
 945         },
 946
 947         [RTE_FLOW_ITEM_TYPE_PF] = {
 948                 .fptr = ch_rte_parsetype_pf,
 949                 .dmask = NULL,
 950         },
 951 };
 952
 953 static int
 954 cxgbe_rtef_parse_items(struct rte_flow *flow,
 955                        const struct rte_flow_item items[],
 956                        struct rte_flow_error *e)
 957 {
 958         struct adapter *adap = ethdev2adap(flow->dev);
 959         const struct rte_flow_item *i;
 960         char repeat[ARRAY_SIZE(parseitem)] = {0};
 961
 962         for (i = items; i->type != RTE_FLOW_ITEM_TYPE_END; i++) {
 963                 struct chrte_fparse *idx;
 964                 int ret;
 965
 966                 if (i->type >= ARRAY_SIZE(parseitem))
 967                         return rte_flow_error_set(e, ENOTSUP,
 968                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 969                                                   i, "Item not supported");
 970
 971                 switch (i->type) {
 972                 case RTE_FLOW_ITEM_TYPE_VOID:
 973                         continue;
 974                 default:
 975                         /* check if item is repeated */
 976                         if (repeat[i->type] &&
 977                             i->type != RTE_FLOW_ITEM_TYPE_VLAN)
 978                                 return rte_flow_error_set(e, ENOTSUP,
 979                                                 RTE_FLOW_ERROR_TYPE_ITEM, i,
 980                                                 "parse items cannot be repeated(except void/vlan)");
 981
 982                         repeat[i->type] = 1;
 983
 984                         /* validate the item */
 985                         ret = cxgbe_validate_item(i, e);
 986                         if (ret)
 987                                 return ret;
 988
 989                         idx = &flow->item_parser[i->type];
 990                         if (!idx || !idx->fptr) {
 991                                 return rte_flow_error_set(e, ENOTSUP,
 992                                                 RTE_FLOW_ERROR_TYPE_ITEM, i,
 993                                                 "Item not supported");
 994                         } else {
 995                                 ret = idx->fptr(idx->dmask, i, &flow->fs, e);
 996                                 if (ret)
 997                                         return ret;
 998                         }
 999                 }
1000         }
1001
1002         cxgbe_fill_filter_region(adap, &flow->fs);
1003         cxgbe_tweak_filter_spec(adap, &flow->fs);
1004
1005         return 0;
1006 }
1007
1008 static int
1009 cxgbe_flow_parse(struct rte_flow *flow,
1010                  const struct rte_flow_attr *attr,
1011                  const struct rte_flow_item item[],
1012                  const struct rte_flow_action action[],
1013                  struct rte_flow_error *e)
1014 {
1015         int ret;
1016         /* parse user request into ch_filter_specification */
1017         ret = cxgbe_rtef_parse_attr(flow, attr, e);
1018         if (ret)
1019                 return ret;
1020         ret = cxgbe_rtef_parse_items(flow, item, e);
1021         if (ret)
1022                 return ret;
1023         return cxgbe_rtef_parse_actions(flow, item, action, e);
1024 }
1025
1026 static int __cxgbe_flow_create(struct rte_eth_dev *dev, struct rte_flow *flow)
1027 {
1028         struct ch_filter_specification *fs = &flow->fs;
1029         struct adapter *adap = ethdev2adap(dev);
1030         struct tid_info *t = &adap->tids;
1031         struct filter_ctx ctx;
1032         unsigned int fidx;
1033         int err;
1034
1035         if (cxgbe_get_fidx(flow, &fidx))
1036                 return -ENOMEM;
1037         if (cxgbe_verify_fidx(flow, fidx, 0))
1038                 return -1;
1039
1040         t4_init_completion(&ctx.completion);
1041         /* go create the filter */
1042         err = cxgbe_set_filter(dev, fidx, fs, &ctx);
1043         if (err) {
1044                 dev_err(adap, "Error %d while creating filter.\n", err);
1045                 return err;
1046         }
1047
1048         /* Poll the FW for reply */
1049         err = cxgbe_poll_for_completion(&adap->sge.fw_evtq,
1050                                         CXGBE_FLOW_POLL_MS,
1051                                         CXGBE_FLOW_POLL_CNT,
1052                                         &ctx.completion);
1053         if (err) {
1054                 dev_err(adap, "Filter set operation timed out (%d)\n", err);
1055                 return err;
1056         }
1057         if (ctx.result) {
1058                 dev_err(adap, "Hardware error %d while creating the filter.\n",
1059                         ctx.result);
1060                 return ctx.result;
1061         }
1062
1063         if (fs->cap) { /* to destroy the filter */
1064                 flow->fidx = ctx.tid;
1065                 flow->f = lookup_tid(t, ctx.tid);
1066         } else {
1067                 flow->fidx = fidx;
1068                 flow->f = &adap->tids.ftid_tab[fidx];
1069         }
1070
1071         return 0;
1072 }
1073
1074 static struct rte_flow *
1075 cxgbe_flow_create(struct rte_eth_dev *dev,
1076                   const struct rte_flow_attr *attr,
1077                   const struct rte_flow_item item[],
1078                   const struct rte_flow_action action[],
1079                   struct rte_flow_error *e)
1080 {
1081         struct adapter *adap = ethdev2adap(dev);
1082         struct rte_flow *flow;
1083         int ret;
1084
1085         flow = t4_os_alloc(sizeof(struct rte_flow));
1086         if (!flow) {
1087                 rte_flow_error_set(e, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1088                                    NULL, "Unable to allocate memory for"
1089                                    " filter_entry");
1090                 return NULL;
1091         }
1092
1093         flow->item_parser = parseitem;
1094         flow->dev = dev;
1095         flow->fs.private = (void *)flow;
1096
1097         if (cxgbe_flow_parse(flow, attr, item, action, e)) {
1098                 t4_os_free(flow);
1099                 return NULL;
1100         }
1101
1102         t4_os_lock(&adap->flow_lock);
1103         /* go, interact with cxgbe_filter */
1104         ret = __cxgbe_flow_create(dev, flow);
1105         t4_os_unlock(&adap->flow_lock);
1106         if (ret) {
1107                 rte_flow_error_set(e, ret, RTE_FLOW_ERROR_TYPE_HANDLE,
1108                                    NULL, "Unable to create flow rule");
1109                 t4_os_free(flow);
1110                 return NULL;
1111         }
1112
1113         flow->f->private = flow; /* Will be used during flush */
1114
1115         return flow;
1116 }
1117
1118 static int __cxgbe_flow_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
1119 {
1120         struct adapter *adap = ethdev2adap(dev);
1121         struct filter_entry *f = flow->f;
1122         struct ch_filter_specification *fs;
1123         struct filter_ctx ctx;
1124         int err;
1125
1126         fs = &f->fs;
1127         if (cxgbe_verify_fidx(flow, flow->fidx, 1))
1128                 return -1;
1129
1130         t4_init_completion(&ctx.completion);
1131         err = cxgbe_del_filter(dev, flow->fidx, fs, &ctx);
1132         if (err) {
1133                 dev_err(adap, "Error %d while deleting filter.\n", err);
1134                 return err;
1135         }
1136
1137         /* Poll the FW for reply */
1138         err = cxgbe_poll_for_completion(&adap->sge.fw_evtq,
1139                                         CXGBE_FLOW_POLL_MS,
1140                                         CXGBE_FLOW_POLL_CNT,
1141                                         &ctx.completion);
1142         if (err) {
1143                 dev_err(adap, "Filter delete operation timed out (%d)\n", err);
1144                 return err;
1145         }
1146         if (ctx.result) {
1147                 dev_err(adap, "Hardware error %d while deleting the filter.\n",
1148                         ctx.result);
1149                 return ctx.result;
1150         }
1151
1152         fs = &flow->fs;
1153         if (fs->mask.macidx) {
1154                 struct port_info *pi = (struct port_info *)
1155                                         (dev->data->dev_private);
1156                 int ret;
1157
1158                 ret = cxgbe_mpstcam_remove(pi, fs->val.macidx);
1159                 if (!ret)
1160                         return ret;
1161         }
1162
1163         return 0;
1164 }
1165
1166 static int
1167 cxgbe_flow_destroy(struct rte_eth_dev *dev, struct rte_flow *flow,
1168                    struct rte_flow_error *e)
1169 {
1170         struct adapter *adap = ethdev2adap(dev);
1171         int ret;
1172
1173         t4_os_lock(&adap->flow_lock);
1174         ret = __cxgbe_flow_destroy(dev, flow);
1175         t4_os_unlock(&adap->flow_lock);
1176         if (ret)
1177                 return rte_flow_error_set(e, ret, RTE_FLOW_ERROR_TYPE_HANDLE,
1178                                           flow, "error destroying filter.");
1179         t4_os_free(flow);
1180         return 0;
1181 }
1182
1183 static int __cxgbe_flow_query(struct rte_flow *flow, u64 *count,
1184                               u64 *byte_count)
1185 {
1186         struct adapter *adap = ethdev2adap(flow->dev);
1187         struct ch_filter_specification fs = flow->f->fs;
1188         unsigned int fidx = flow->fidx;
1189         int ret = 0;
1190
1191         ret = cxgbe_get_filter_count(adap, fidx, count, fs.cap, 0);
1192         if (ret)
1193                 return ret;
1194         return cxgbe_get_filter_count(adap, fidx, byte_count, fs.cap, 1);
1195 }
1196
1197 static int
1198 cxgbe_flow_query(struct rte_eth_dev *dev, struct rte_flow *flow,
1199                  const struct rte_flow_action *action, void *data,
1200                  struct rte_flow_error *e)
1201 {
1202         struct adapter *adap = ethdev2adap(flow->dev);
1203         struct ch_filter_specification fs;
1204         struct rte_flow_query_count *c;
1205         struct filter_entry *f;
1206         int ret;
1207
1208         RTE_SET_USED(dev);
1209
1210         f = flow->f;
1211         fs = f->fs;
1212
1213         if (action->type != RTE_FLOW_ACTION_TYPE_COUNT)
1214                 return rte_flow_error_set(e, ENOTSUP,
1215                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1216                                           "only count supported for query");
1217
1218         /*
1219          * This is a valid operation, Since we are allowed to do chelsio
1220          * specific operations in rte side of our code but not vise-versa
1221          *
1222          * So, fs can be queried/modified here BUT rte_flow_query_count
1223          * cannot be worked on by the lower layer since we want to maintain
1224          * it as rte_flow agnostic.
1225          */
1226         if (!fs.hitcnts)
1227                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION,
1228                                           &fs, "filter hit counters were not"
1229                                           " enabled during filter creation");
1230
1231         c = (struct rte_flow_query_count *)data;
1232
1233         t4_os_lock(&adap->flow_lock);
1234         ret = __cxgbe_flow_query(flow, &c->hits, &c->bytes);
1235         if (ret) {
1236                 rte_flow_error_set(e, -ret, RTE_FLOW_ERROR_TYPE_ACTION,
1237                                    f, "cxgbe pmd failed to perform query");
1238                 goto out;
1239         }
1240
1241         /* Query was successful */
1242         c->bytes_set = 1;
1243         c->hits_set = 1;
1244         if (c->reset)
1245                 cxgbe_clear_filter_count(adap, flow->fidx, f->fs.cap, true);
1246
1247 out:
1248         t4_os_unlock(&adap->flow_lock);
1249         return ret;
1250 }
1251
1252 static int
1253 cxgbe_flow_validate(struct rte_eth_dev *dev,
1254                     const struct rte_flow_attr *attr,
1255                     const struct rte_flow_item item[],
1256                     const struct rte_flow_action action[],
1257                     struct rte_flow_error *e)
1258 {
1259         struct adapter *adap = ethdev2adap(dev);
1260         struct rte_flow *flow;
1261         unsigned int fidx;
1262         int ret = 0;
1263
1264         flow = t4_os_alloc(sizeof(struct rte_flow));
1265         if (!flow)
1266                 return rte_flow_error_set(e, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1267                                 NULL,
1268                                 "Unable to allocate memory for filter_entry");
1269
1270         flow->item_parser = parseitem;
1271         flow->dev = dev;
1272
1273         ret = cxgbe_flow_parse(flow, attr, item, action, e);
1274         if (ret) {
1275                 t4_os_free(flow);
1276                 return ret;
1277         }
1278
1279         if (cxgbe_validate_filter(adap, &flow->fs)) {
1280                 t4_os_free(flow);
1281                 return rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
1282                                 NULL,
1283                                 "validation failed. Check f/w config file.");
1284         }
1285
1286         t4_os_lock(&adap->flow_lock);
1287         if (cxgbe_get_fidx(flow, &fidx)) {
1288                 ret = rte_flow_error_set(e, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1289                                          NULL, "no memory in tcam.");
1290                 goto out;
1291         }
1292
1293         if (cxgbe_verify_fidx(flow, fidx, 0)) {
1294                 ret = rte_flow_error_set(e, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
1295                                          NULL, "validation failed");
1296                 goto out;
1297         }
1298
1299 out:
1300         t4_os_unlock(&adap->flow_lock);
1301         t4_os_free(flow);
1302         return ret;
1303 }
1304
1305 /*
1306  * @ret : > 0 filter destroyed succsesfully
1307  *        < 0 error destroying filter
1308  *        == 1 filter not active / not found
1309  */
1310 static int
1311 cxgbe_check_n_destroy(struct filter_entry *f, struct rte_eth_dev *dev)
1312 {
1313         if (f && (f->valid || f->pending) &&
1314             f->dev == dev && /* Only if user has asked for this port */
1315              f->private) /* We (rte_flow) created this filter */
1316                 return __cxgbe_flow_destroy(dev, (struct rte_flow *)f->private);
1317         return 1;
1318 }
1319
1320 static int cxgbe_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *e)
1321 {
1322         struct adapter *adap = ethdev2adap(dev);
1323         unsigned int i;
1324         int ret = 0;
1325
1326         t4_os_lock(&adap->flow_lock);
1327         if (adap->tids.ftid_tab) {
1328                 struct filter_entry *f = &adap->tids.ftid_tab[0];
1329
1330                 for (i = 0; i < adap->tids.nftids; i++, f++) {
1331                         ret = cxgbe_check_n_destroy(f, dev);
1332                         if (ret < 0) {
1333                                 rte_flow_error_set(e, ret,
1334                                                    RTE_FLOW_ERROR_TYPE_HANDLE,
1335                                                    f->private,
1336                                                    "error destroying TCAM "
1337                                                    "filter.");
1338                                 goto out;
1339                         }
1340                 }
1341         }
1342
1343         if (is_hashfilter(adap) && adap->tids.tid_tab) {
1344                 struct filter_entry *f;
1345
1346                 for (i = adap->tids.hash_base; i <= adap->tids.ntids; i++) {
1347                         f = (struct filter_entry *)adap->tids.tid_tab[i];
1348
1349                         ret = cxgbe_check_n_destroy(f, dev);
1350                         if (ret < 0) {
1351                                 rte_flow_error_set(e, ret,
1352                                                    RTE_FLOW_ERROR_TYPE_HANDLE,
1353                                                    f->private,
1354                                                    "error destroying HASH "
1355                                                    "filter.");
1356                                 goto out;
1357                         }
1358                 }
1359         }
1360
1361 out:
1362         t4_os_unlock(&adap->flow_lock);
1363         return ret >= 0 ? 0 : ret;
1364 }
1365
1366 static const struct rte_flow_ops cxgbe_flow_ops = {
1367         .validate       = cxgbe_flow_validate,
1368         .create         = cxgbe_flow_create,
1369         .destroy        = cxgbe_flow_destroy,
1370         .flush          = cxgbe_flow_flush,
1371         .query          = cxgbe_flow_query,
1372         .isolate        = NULL,
1373 };
1374
1375 int
1376 cxgbe_dev_filter_ctrl(struct rte_eth_dev *dev,
1377                       enum rte_filter_type filter_type,
1378                       enum rte_filter_op filter_op,
1379                       void *arg)
1380 {
1381         int ret = 0;
1382
1383         RTE_SET_USED(dev);
1384         switch (filter_type) {
1385         case RTE_ETH_FILTER_GENERIC:
1386                 if (filter_op != RTE_ETH_FILTER_GET)
1387                         return -EINVAL;
1388                 *(const void **)arg = &cxgbe_flow_ops;
1389                 break;
1390         default:
1391                 ret = -ENOTSUP;
1392                 break;
1393         }
1394         return ret;
1395 }