drivers/net/sfc/base/ef10_filter.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2007-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  */
   6
   7 #include "efx.h"
   8 #include "efx_impl.h"
   9
  10 #if EFX_OPTS_EF10()
  11
  12 #if EFSYS_OPT_FILTER
  13
  14 #define EFE_SPEC(eftp, index)   ((eftp)->eft_entry[(index)].efe_spec)
  15
  16 static                  efx_filter_spec_t *
  17 ef10_filter_entry_spec(
  18         __in            const ef10_filter_table_t *eftp,
  19         __in            unsigned int index)
  20 {
  21         return ((efx_filter_spec_t *)(EFE_SPEC(eftp, index) &
  22                 ~(uintptr_t)EFX_EF10_FILTER_FLAGS));
  23 }
  24
  25 static                  boolean_t
  26 ef10_filter_entry_is_busy(
  27         __in            const ef10_filter_table_t *eftp,
  28         __in            unsigned int index)
  29 {
  30         if (EFE_SPEC(eftp, index) & EFX_EF10_FILTER_FLAG_BUSY)
  31                 return (B_TRUE);
  32         else
  33                 return (B_FALSE);
  34 }
  35
  36 static                  boolean_t
  37 ef10_filter_entry_is_auto_old(
  38         __in            const ef10_filter_table_t *eftp,
  39         __in            unsigned int index)
  40 {
  41         if (EFE_SPEC(eftp, index) & EFX_EF10_FILTER_FLAG_AUTO_OLD)
  42                 return (B_TRUE);
  43         else
  44                 return (B_FALSE);
  45 }
  46
  47 static                  void
  48 ef10_filter_set_entry(
  49         __inout         ef10_filter_table_t *eftp,
  50         __in            unsigned int index,
  51         __in_opt        const efx_filter_spec_t *efsp)
  52 {
  53         EFE_SPEC(eftp, index) = (uintptr_t)efsp;
  54 }
  55
  56 static                  void
  57 ef10_filter_set_entry_busy(
  58         __inout         ef10_filter_table_t *eftp,
  59         __in            unsigned int index)
  60 {
  61         EFE_SPEC(eftp, index) |= (uintptr_t)EFX_EF10_FILTER_FLAG_BUSY;
  62 }
  63
  64 static                  void
  65 ef10_filter_set_entry_not_busy(
  66         __inout         ef10_filter_table_t *eftp,
  67         __in            unsigned int index)
  68 {
  69         EFE_SPEC(eftp, index) &= ~(uintptr_t)EFX_EF10_FILTER_FLAG_BUSY;
  70 }
  71
  72 static                  void
  73 ef10_filter_set_entry_auto_old(
  74         __inout         ef10_filter_table_t *eftp,
  75         __in            unsigned int index)
  76 {
  77         EFSYS_ASSERT(ef10_filter_entry_spec(eftp, index) != NULL);
  78         EFE_SPEC(eftp, index) |= (uintptr_t)EFX_EF10_FILTER_FLAG_AUTO_OLD;
  79 }
  80
  81 static                  void
  82 ef10_filter_set_entry_not_auto_old(
  83         __inout         ef10_filter_table_t *eftp,
  84         __in            unsigned int index)
  85 {
  86         EFE_SPEC(eftp, index) &= ~(uintptr_t)EFX_EF10_FILTER_FLAG_AUTO_OLD;
  87         EFSYS_ASSERT(ef10_filter_entry_spec(eftp, index) != NULL);
  88 }
  89
  90         __checkReturn   efx_rc_t
  91 ef10_filter_init(
  92         __in            efx_nic_t *enp)
  93 {
  94         efx_rc_t rc;
  95         ef10_filter_table_t *eftp;
  96
  97         EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
  98
  99 #define MATCH_MASK(match) (EFX_MASK32(match) << EFX_LOW_BIT(match))
 100         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_REM_HOST ==
 101             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_SRC_IP));
 102         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_LOC_HOST ==
 103             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_DST_IP));
 104         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_REM_MAC ==
 105             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_SRC_MAC));
 106         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_REM_PORT ==
 107             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_SRC_PORT));
 108         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_LOC_MAC ==
 109             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_DST_MAC));
 110         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_LOC_PORT ==
 111             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_DST_PORT));
 112         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_ETHER_TYPE ==
 113             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_ETHER_TYPE));
 114         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_INNER_VID ==
 115             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_INNER_VLAN));
 116         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_OUTER_VID ==
 117             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_OUTER_VLAN));
 118         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_IP_PROTO ==
 119             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_IP_PROTO));
 120         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_VNI_OR_VSID ==
 121             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_VNI_OR_VSID));
 122         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_IFRM_LOC_MAC ==
 123             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_DST_MAC));
 124         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST ==
 125             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_UNKNOWN_MCAST_DST));
 126         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST ==
 127             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_UNKNOWN_UCAST_DST));
 128         EFX_STATIC_ASSERT(EFX_FILTER_MATCH_UNKNOWN_MCAST_DST ==
 129             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_UNKNOWN_MCAST_DST));
 130         EFX_STATIC_ASSERT((uint32_t)EFX_FILTER_MATCH_UNKNOWN_UCAST_DST ==
 131             MATCH_MASK(MC_CMD_FILTER_OP_EXT_IN_MATCH_UNKNOWN_UCAST_DST));
 132 #undef MATCH_MASK
 133
 134         EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (ef10_filter_table_t), eftp);
 135
 136         if (!eftp) {
 137                 rc = ENOMEM;
 138                 goto fail1;
 139         }
 140
 141         enp->en_filter.ef_ef10_filter_table = eftp;
 142
 143         return (0);
 144
 145 fail1:
 146         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 147
 148         return (rc);
 149 }
 150
 151                         void
 152 ef10_filter_fini(
 153         __in            efx_nic_t *enp)
 154 {
 155         EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
 156
 157         if (enp->en_filter.ef_ef10_filter_table != NULL) {
 158                 EFSYS_KMEM_FREE(enp->en_esip, sizeof (ef10_filter_table_t),
 159                     enp->en_filter.ef_ef10_filter_table);
 160         }
 161 }
 162
 163 static  __checkReturn   efx_rc_t
 164 efx_mcdi_filter_op_add(
 165         __in            efx_nic_t *enp,
 166         __in            efx_filter_spec_t *spec,
 167         __in            unsigned int filter_op,
 168         __inout         ef10_filter_handle_t *handle)
 169 {
 170         efx_mcdi_req_t req;
 171         EFX_MCDI_DECLARE_BUF(payload, MC_CMD_FILTER_OP_V3_IN_LEN,
 172                 MC_CMD_FILTER_OP_EXT_OUT_LEN);
 173         efx_filter_match_flags_t match_flags;
 174         efx_rc_t rc;
 175
 176         req.emr_cmd = MC_CMD_FILTER_OP;
 177         req.emr_in_buf = payload;
 178         req.emr_in_length = MC_CMD_FILTER_OP_V3_IN_LEN;
 179         req.emr_out_buf = payload;
 180         req.emr_out_length = MC_CMD_FILTER_OP_EXT_OUT_LEN;
 181
 182         /*
 183          * Remove match flag for encapsulated filters that does not correspond
 184          * to the MCDI match flags
 185          */
 186         match_flags = spec->efs_match_flags & ~EFX_FILTER_MATCH_ENCAP_TYPE;
 187
 188         switch (filter_op) {
 189         case MC_CMD_FILTER_OP_IN_OP_REPLACE:
 190                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_HANDLE_LO,
 191                     handle->efh_lo);
 192                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_HANDLE_HI,
 193                     handle->efh_hi);
 194                 /* Fall through */
 195         case MC_CMD_FILTER_OP_IN_OP_INSERT:
 196         case MC_CMD_FILTER_OP_IN_OP_SUBSCRIBE:
 197                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_OP, filter_op);
 198                 break;
 199         default:
 200                 EFSYS_ASSERT(0);
 201                 rc = EINVAL;
 202                 goto fail1;
 203         }
 204
 205         MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_PORT_ID, enp->en_vport_id);
 206         MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_MATCH_FIELDS,
 207             match_flags);
 208         if (spec->efs_dmaq_id == EFX_FILTER_SPEC_RX_DMAQ_ID_DROP) {
 209                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_RX_DEST,
 210                     MC_CMD_FILTER_OP_EXT_IN_RX_DEST_DROP);
 211         } else {
 212                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_RX_DEST,
 213                     MC_CMD_FILTER_OP_EXT_IN_RX_DEST_HOST);
 214                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_RX_QUEUE,
 215                     spec->efs_dmaq_id);
 216         }
 217
 218 #if EFSYS_OPT_RX_SCALE
 219         if (spec->efs_flags & EFX_FILTER_FLAG_RX_RSS) {
 220                 uint32_t rss_context;
 221
 222                 if (spec->efs_rss_context == EFX_RSS_CONTEXT_DEFAULT)
 223                         rss_context = enp->en_rss_context;
 224                 else
 225                         rss_context = spec->efs_rss_context;
 226                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_RX_CONTEXT,
 227                     rss_context);
 228         }
 229 #endif
 230
 231         MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_RX_MODE,
 232             spec->efs_flags & EFX_FILTER_FLAG_RX_RSS ?
 233             MC_CMD_FILTER_OP_EXT_IN_RX_MODE_RSS :
 234             MC_CMD_FILTER_OP_EXT_IN_RX_MODE_SIMPLE);
 235         MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_TX_DEST,
 236             MC_CMD_FILTER_OP_EXT_IN_TX_DEST_DEFAULT);
 237
 238         if (filter_op != MC_CMD_FILTER_OP_IN_OP_REPLACE) {
 239                 /*
 240                  * NOTE: Unlike most MCDI requests, the filter fields
 241                  * are presented in network (big endian) byte order.
 242                  */
 243                 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_EXT_IN_SRC_MAC),
 244                     spec->efs_rem_mac, EFX_MAC_ADDR_LEN);
 245                 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_EXT_IN_DST_MAC),
 246                     spec->efs_loc_mac, EFX_MAC_ADDR_LEN);
 247
 248                 MCDI_IN_SET_WORD(req, FILTER_OP_EXT_IN_SRC_PORT,
 249                     __CPU_TO_BE_16(spec->efs_rem_port));
 250                 MCDI_IN_SET_WORD(req, FILTER_OP_EXT_IN_DST_PORT,
 251                     __CPU_TO_BE_16(spec->efs_loc_port));
 252
 253                 MCDI_IN_SET_WORD(req, FILTER_OP_EXT_IN_ETHER_TYPE,
 254                     __CPU_TO_BE_16(spec->efs_ether_type));
 255
 256                 MCDI_IN_SET_WORD(req, FILTER_OP_EXT_IN_INNER_VLAN,
 257                     __CPU_TO_BE_16(spec->efs_inner_vid));
 258                 MCDI_IN_SET_WORD(req, FILTER_OP_EXT_IN_OUTER_VLAN,
 259                     __CPU_TO_BE_16(spec->efs_outer_vid));
 260
 261                 /* IP protocol (in low byte, high byte is zero) */
 262                 MCDI_IN_SET_BYTE(req, FILTER_OP_EXT_IN_IP_PROTO,
 263                     spec->efs_ip_proto);
 264
 265                 EFX_STATIC_ASSERT(sizeof (spec->efs_rem_host) ==
 266                     MC_CMD_FILTER_OP_EXT_IN_SRC_IP_LEN);
 267                 EFX_STATIC_ASSERT(sizeof (spec->efs_loc_host) ==
 268                     MC_CMD_FILTER_OP_EXT_IN_DST_IP_LEN);
 269
 270                 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_EXT_IN_SRC_IP),
 271                     &spec->efs_rem_host.eo_byte[0],
 272                     MC_CMD_FILTER_OP_EXT_IN_SRC_IP_LEN);
 273                 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_EXT_IN_DST_IP),
 274                     &spec->efs_loc_host.eo_byte[0],
 275                     MC_CMD_FILTER_OP_EXT_IN_DST_IP_LEN);
 276
 277                 /*
 278                  * On Medford, filters for encapsulated packets match based on
 279                  * the ether type and IP protocol in the outer frame.  In
 280                  * addition we need to fill in the VNI or VSID type field.
 281                  */
 282                 switch (spec->efs_encap_type) {
 283                 case EFX_TUNNEL_PROTOCOL_NONE:
 284                         break;
 285                 case EFX_TUNNEL_PROTOCOL_VXLAN:
 286                 case EFX_TUNNEL_PROTOCOL_GENEVE:
 287                         MCDI_IN_POPULATE_DWORD_1(req,
 288                             FILTER_OP_EXT_IN_VNI_OR_VSID,
 289                             FILTER_OP_EXT_IN_VNI_TYPE,
 290                             spec->efs_encap_type == EFX_TUNNEL_PROTOCOL_VXLAN ?
 291                                     MC_CMD_FILTER_OP_EXT_IN_VNI_TYPE_VXLAN :
 292                                     MC_CMD_FILTER_OP_EXT_IN_VNI_TYPE_GENEVE);
 293                         break;
 294                 case EFX_TUNNEL_PROTOCOL_NVGRE:
 295                         MCDI_IN_POPULATE_DWORD_1(req,
 296                             FILTER_OP_EXT_IN_VNI_OR_VSID,
 297                             FILTER_OP_EXT_IN_VSID_TYPE,
 298                             MC_CMD_FILTER_OP_EXT_IN_VSID_TYPE_NVGRE);
 299                         break;
 300                 default:
 301                         EFSYS_ASSERT(0);
 302                         rc = EINVAL;
 303                         goto fail2;
 304                 }
 305
 306                 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_EXT_IN_VNI_OR_VSID),
 307                     spec->efs_vni_or_vsid, EFX_VNI_OR_VSID_LEN);
 308
 309                 memcpy(MCDI_IN2(req, uint8_t, FILTER_OP_EXT_IN_IFRM_DST_MAC),
 310                     spec->efs_ifrm_loc_mac, EFX_MAC_ADDR_LEN);
 311         }
 312
 313         /*
 314          * Set the "MARK" or "FLAG" action for all packets matching this filter
 315          * if necessary (only useful with equal stride packed stream Rx mode
 316          * which provide the information in pseudo-header).
 317          * These actions require MC_CMD_FILTER_OP_V3_IN msgrequest.
 318          */
 319         if ((spec->efs_flags & EFX_FILTER_FLAG_ACTION_MARK) &&
 320             (spec->efs_flags & EFX_FILTER_FLAG_ACTION_FLAG)) {
 321                 rc = EINVAL;
 322                 goto fail3;
 323         }
 324         if (spec->efs_flags & EFX_FILTER_FLAG_ACTION_MARK) {
 325                 MCDI_IN_SET_DWORD(req, FILTER_OP_V3_IN_MATCH_ACTION,
 326                     MC_CMD_FILTER_OP_V3_IN_MATCH_ACTION_MARK);
 327                 MCDI_IN_SET_DWORD(req, FILTER_OP_V3_IN_MATCH_MARK_VALUE,
 328                     spec->efs_mark);
 329         } else if (spec->efs_flags & EFX_FILTER_FLAG_ACTION_FLAG) {
 330                 MCDI_IN_SET_DWORD(req, FILTER_OP_V3_IN_MATCH_ACTION,
 331                     MC_CMD_FILTER_OP_V3_IN_MATCH_ACTION_FLAG);
 332         }
 333
 334         efx_mcdi_execute(enp, &req);
 335
 336         if (req.emr_rc != 0) {
 337                 rc = req.emr_rc;
 338                 goto fail4;
 339         }
 340
 341         if (req.emr_out_length_used < MC_CMD_FILTER_OP_EXT_OUT_LEN) {
 342                 rc = EMSGSIZE;
 343                 goto fail5;
 344         }
 345
 346         handle->efh_lo = MCDI_OUT_DWORD(req, FILTER_OP_EXT_OUT_HANDLE_LO);
 347         handle->efh_hi = MCDI_OUT_DWORD(req, FILTER_OP_EXT_OUT_HANDLE_HI);
 348
 349         return (0);
 350
 351 fail5:
 352         EFSYS_PROBE(fail5);
 353 fail4:
 354         EFSYS_PROBE(fail4);
 355 fail3:
 356         EFSYS_PROBE(fail3);
 357 fail2:
 358         EFSYS_PROBE(fail2);
 359 fail1:
 360         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 361
 362         return (rc);
 363
 364 }
 365
 366 static  __checkReturn   efx_rc_t
 367 efx_mcdi_filter_op_delete(
 368         __in            efx_nic_t *enp,
 369         __in            unsigned int filter_op,
 370         __inout         ef10_filter_handle_t *handle)
 371 {
 372         efx_mcdi_req_t req;
 373         EFX_MCDI_DECLARE_BUF(payload, MC_CMD_FILTER_OP_EXT_IN_LEN,
 374                 MC_CMD_FILTER_OP_EXT_OUT_LEN);
 375         efx_rc_t rc;
 376
 377         req.emr_cmd = MC_CMD_FILTER_OP;
 378         req.emr_in_buf = payload;
 379         req.emr_in_length = MC_CMD_FILTER_OP_EXT_IN_LEN;
 380         req.emr_out_buf = payload;
 381         req.emr_out_length = MC_CMD_FILTER_OP_EXT_OUT_LEN;
 382
 383         switch (filter_op) {
 384         case MC_CMD_FILTER_OP_IN_OP_REMOVE:
 385                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_OP,
 386                     MC_CMD_FILTER_OP_IN_OP_REMOVE);
 387                 break;
 388         case MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE:
 389                 MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_OP,
 390                     MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE);
 391                 break;
 392         default:
 393                 EFSYS_ASSERT(0);
 394                 rc = EINVAL;
 395                 goto fail1;
 396         }
 397
 398         MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_HANDLE_LO, handle->efh_lo);
 399         MCDI_IN_SET_DWORD(req, FILTER_OP_EXT_IN_HANDLE_HI, handle->efh_hi);
 400
 401         efx_mcdi_execute_quiet(enp, &req);
 402
 403         if (req.emr_rc != 0) {
 404                 rc = req.emr_rc;
 405                 goto fail2;
 406         }
 407
 408         if (req.emr_out_length_used < MC_CMD_FILTER_OP_EXT_OUT_LEN) {
 409                 rc = EMSGSIZE;
 410                 goto fail3;
 411         }
 412
 413         return (0);
 414
 415 fail3:
 416         EFSYS_PROBE(fail3);
 417
 418 fail2:
 419         EFSYS_PROBE(fail2);
 420 fail1:
 421         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 422
 423         return (rc);
 424 }
 425
 426 static  __checkReturn   boolean_t
 427 ef10_filter_equal(
 428         __in            const efx_filter_spec_t *left,
 429         __in            const efx_filter_spec_t *right)
 430 {
 431         /* FIXME: Consider rx vs tx filters (look at efs_flags) */
 432         if (left->efs_match_flags != right->efs_match_flags)
 433                 return (B_FALSE);
 434         if (!EFX_OWORD_IS_EQUAL(left->efs_rem_host, right->efs_rem_host))
 435                 return (B_FALSE);
 436         if (!EFX_OWORD_IS_EQUAL(left->efs_loc_host, right->efs_loc_host))
 437                 return (B_FALSE);
 438         if (memcmp(left->efs_rem_mac, right->efs_rem_mac, EFX_MAC_ADDR_LEN))
 439                 return (B_FALSE);
 440         if (memcmp(left->efs_loc_mac, right->efs_loc_mac, EFX_MAC_ADDR_LEN))
 441                 return (B_FALSE);
 442         if (left->efs_rem_port != right->efs_rem_port)
 443                 return (B_FALSE);
 444         if (left->efs_loc_port != right->efs_loc_port)
 445                 return (B_FALSE);
 446         if (left->efs_inner_vid != right->efs_inner_vid)
 447                 return (B_FALSE);
 448         if (left->efs_outer_vid != right->efs_outer_vid)
 449                 return (B_FALSE);
 450         if (left->efs_ether_type != right->efs_ether_type)
 451                 return (B_FALSE);
 452         if (left->efs_ip_proto != right->efs_ip_proto)
 453                 return (B_FALSE);
 454         if (left->efs_encap_type != right->efs_encap_type)
 455                 return (B_FALSE);
 456         if (memcmp(left->efs_vni_or_vsid, right->efs_vni_or_vsid,
 457             EFX_VNI_OR_VSID_LEN))
 458                 return (B_FALSE);
 459         if (memcmp(left->efs_ifrm_loc_mac, right->efs_ifrm_loc_mac,
 460             EFX_MAC_ADDR_LEN))
 461                 return (B_FALSE);
 462
 463         return (B_TRUE);
 464
 465 }
 466
 467 static  __checkReturn   boolean_t
 468 ef10_filter_same_dest(
 469         __in            const efx_filter_spec_t *left,
 470         __in            const efx_filter_spec_t *right)
 471 {
 472         if ((left->efs_flags & EFX_FILTER_FLAG_RX_RSS) &&
 473             (right->efs_flags & EFX_FILTER_FLAG_RX_RSS)) {
 474                 if (left->efs_rss_context == right->efs_rss_context)
 475                         return (B_TRUE);
 476         } else if ((~(left->efs_flags) & EFX_FILTER_FLAG_RX_RSS) &&
 477             (~(right->efs_flags) & EFX_FILTER_FLAG_RX_RSS)) {
 478                 if (left->efs_dmaq_id == right->efs_dmaq_id)
 479                         return (B_TRUE);
 480         }
 481         return (B_FALSE);
 482 }
 483
 484 static  __checkReturn   uint32_t
 485 ef10_filter_hash(
 486         __in            efx_filter_spec_t *spec)
 487 {
 488         EFX_STATIC_ASSERT((sizeof (efx_filter_spec_t) % sizeof (uint32_t))
 489                             == 0);
 490         EFX_STATIC_ASSERT((EFX_FIELD_OFFSET(efx_filter_spec_t, efs_outer_vid) %
 491                             sizeof (uint32_t)) == 0);
 492
 493         /*
 494          * As the area of the efx_filter_spec_t we need to hash is DWORD
 495          * aligned and an exact number of DWORDs in size we can use the
 496          * optimised efx_hash_dwords() rather than efx_hash_bytes()
 497          */
 498         return (efx_hash_dwords((const uint32_t *)&spec->efs_outer_vid,
 499                         (sizeof (efx_filter_spec_t) -
 500                         EFX_FIELD_OFFSET(efx_filter_spec_t, efs_outer_vid)) /
 501                         sizeof (uint32_t), 0));
 502 }
 503
 504 /*
 505  * Decide whether a filter should be exclusive or else should allow
 506  * delivery to additional recipients.  Currently we decide that
 507  * filters for specific local unicast MAC and IP addresses are
 508  * exclusive.
 509  */
 510 static  __checkReturn   boolean_t
 511 ef10_filter_is_exclusive(
 512         __in            efx_filter_spec_t *spec)
 513 {
 514         if ((spec->efs_match_flags & EFX_FILTER_MATCH_LOC_MAC) &&
 515             !EFX_MAC_ADDR_IS_MULTICAST(spec->efs_loc_mac))
 516                 return (B_TRUE);
 517
 518         if ((spec->efs_match_flags &
 519                 (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_LOC_HOST)) ==
 520             (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_LOC_HOST)) {
 521                 if ((spec->efs_ether_type == EFX_ETHER_TYPE_IPV4) &&
 522                     ((spec->efs_loc_host.eo_u8[0] & 0xf) != 0xe))
 523                         return (B_TRUE);
 524                 if ((spec->efs_ether_type == EFX_ETHER_TYPE_IPV6) &&
 525                     (spec->efs_loc_host.eo_u8[0] != 0xff))
 526                         return (B_TRUE);
 527         }
 528
 529         return (B_FALSE);
 530 }
 531
 532         __checkReturn   efx_rc_t
 533 ef10_filter_restore(
 534         __in            efx_nic_t *enp)
 535 {
 536         int tbl_id;
 537         efx_filter_spec_t *spec;
 538         ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table;
 539         boolean_t restoring;
 540         efsys_lock_state_t state;
 541         efx_rc_t rc;
 542
 543         EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
 544
 545         for (tbl_id = 0; tbl_id < EFX_EF10_FILTER_TBL_ROWS; tbl_id++) {
 546
 547                 EFSYS_LOCK(enp->en_eslp, state);
 548
 549                 spec = ef10_filter_entry_spec(eftp, tbl_id);
 550                 if (spec == NULL) {
 551                         restoring = B_FALSE;
 552                 } else if (ef10_filter_entry_is_busy(eftp, tbl_id)) {
 553                         /* Ignore busy entries. */
 554                         restoring = B_FALSE;
 555                 } else {
 556                         ef10_filter_set_entry_busy(eftp, tbl_id);
 557                         restoring = B_TRUE;
 558                 }
 559
 560                 EFSYS_UNLOCK(enp->en_eslp, state);
 561
 562                 if (restoring == B_FALSE)
 563                         continue;
 564
 565                 if (ef10_filter_is_exclusive(spec)) {
 566                         rc = efx_mcdi_filter_op_add(enp, spec,
 567                             MC_CMD_FILTER_OP_IN_OP_INSERT,
 568                             &eftp->eft_entry[tbl_id].efe_handle);
 569                 } else {
 570                         rc = efx_mcdi_filter_op_add(enp, spec,
 571                             MC_CMD_FILTER_OP_IN_OP_SUBSCRIBE,
 572                             &eftp->eft_entry[tbl_id].efe_handle);
 573                 }
 574
 575                 if (rc != 0)
 576                         goto fail1;
 577
 578                 EFSYS_LOCK(enp->en_eslp, state);
 579
 580                 ef10_filter_set_entry_not_busy(eftp, tbl_id);
 581
 582                 EFSYS_UNLOCK(enp->en_eslp, state);
 583         }
 584
 585         return (0);
 586
 587 fail1:
 588         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 589
 590         return (rc);
 591 }
 592
 593 enum ef10_filter_add_action_e {
 594         /* Insert a new filter */
 595         EF10_FILTER_ADD_NEW,
 596         /*
 597          * Replace old filter with a new, overriding the old one
 598          * if it has lower priority.
 599          */
 600         EF10_FILTER_ADD_REPLACE,
 601         /* Store new, lower priority filter as overridden by old filter */
 602         EF10_FILTER_ADD_STORE,
 603         /* Special case for AUTO filters, remove AUTO_OLD flag */
 604         EF10_FILTER_ADD_REFRESH,
 605 };
 606
 607 static  __checkReturn   efx_rc_t
 608 ef10_filter_add_lookup_equal_spec(
 609         __in            efx_filter_spec_t *spec,
 610         __in            efx_filter_spec_t *probe_spec,
 611         __in            efx_filter_replacement_policy_t policy,
 612         __out           boolean_t *found)
 613 {
 614         efx_rc_t rc;
 615
 616         /* Refreshing AUTO filter */
 617         if (spec->efs_priority == EFX_FILTER_PRI_AUTO &&
 618             probe_spec->efs_priority == EFX_FILTER_PRI_AUTO) {
 619                 *found = B_TRUE;
 620                 return (0);
 621         }
 622
 623         /*
 624          * With exclusive filters, higher priority ones
 625          * override lower priority ones, and lower priority
 626          * ones are stored in case the higher priority one
 627          * is removed.
 628          */
 629         if (ef10_filter_is_exclusive(spec)) {
 630                 switch (policy) {
 631                 case EFX_FILTER_REPLACEMENT_HIGHER_OR_EQUAL_PRIORITY:
 632                         if (spec->efs_priority == probe_spec->efs_priority) {
 633                                 *found = B_TRUE;
 634                                 break;
 635                         }
 636                         /* Fall-through */
 637                 case EFX_FILTER_REPLACEMENT_HIGHER_PRIORITY:
 638                         if (spec->efs_priority > probe_spec->efs_priority) {
 639                                 *found = B_TRUE;
 640                                 break;
 641                         }
 642                         /* Fall-through */
 643                 case EFX_FILTER_REPLACEMENT_NEVER:
 644                         /*
 645                          * Lower priority filter needs to be
 646                          * stored. It does *not* replace the
 647                          * old one. That is why EEXIST is not
 648                          * returned in that case.
 649                          */
 650                         if (spec->efs_priority < probe_spec->efs_priority) {
 651                                 *found = B_TRUE;
 652                                 break;
 653                         } else {
 654                                 rc = EEXIST;
 655                                 goto fail1;
 656                         }
 657                 default:
 658                         EFSYS_ASSERT(0);
 659                         rc = EEXIST;
 660                         goto fail2;
 661                 }
 662         } else {
 663                 *found = B_FALSE;
 664         }
 665
 666         return (0);
 667
 668 fail2:
 669         EFSYS_PROBE(fail2);
 670
 671 fail1:
 672         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 673
 674         return (rc);
 675 }
 676
 677
 678 static                  void
 679 ef10_filter_add_select_action(
 680         __in            efx_filter_spec_t *saved_spec,
 681         __in            efx_filter_spec_t *spec,
 682         __out           enum ef10_filter_add_action_e *action,
 683         __out           efx_filter_spec_t **overridden_spec)
 684 {
 685         efx_filter_spec_t *overridden = NULL;
 686
 687         if (saved_spec == NULL) {
 688                 *action = EF10_FILTER_ADD_NEW;
 689         } else if (ef10_filter_is_exclusive(spec) == B_FALSE) {
 690                 /*
 691                  * Non-exclusive filters are always stored in separate entries
 692                  * in the table. The only case involving a saved spec is
 693                  * refreshing an AUTO filter.
 694                  */
 695                 EFSYS_ASSERT(saved_spec->efs_overridden_spec == NULL);
 696                 EFSYS_ASSERT(spec->efs_priority == EFX_FILTER_PRI_AUTO);
 697                 EFSYS_ASSERT(saved_spec->efs_priority == EFX_FILTER_PRI_AUTO);
 698                 *action = EF10_FILTER_ADD_REFRESH;
 699         } else {
 700                 /* Exclusive filters stored in the same entry */
 701                 if (spec->efs_priority > saved_spec->efs_priority) {
 702                         /*
 703                          * Insert a high priority filter over a lower priority
 704                          * one. Only two priority levels are implemented, so
 705                          * there must not already be an overridden filter.
 706                          */
 707                         EFX_STATIC_ASSERT(EFX_FILTER_NPRI == 2);
 708                         EFSYS_ASSERT(saved_spec->efs_overridden_spec == NULL);
 709                         overridden = saved_spec;
 710                         *action = EF10_FILTER_ADD_REPLACE;
 711                 } else if (spec->efs_priority == saved_spec->efs_priority) {
 712                         /* Replace in-place or refresh an existing filter */
 713                         if (spec->efs_priority == EFX_FILTER_PRI_AUTO)
 714                                 *action = EF10_FILTER_ADD_REFRESH;
 715                         else
 716                                 *action = EF10_FILTER_ADD_REPLACE;
 717                 } else {
 718                         /*
 719                          * Insert a lower priority filter, storing it in case
 720                          * the higher priority filter is removed.
 721                          *
 722                          * Currently there are only two priority levels, so this
 723                          * must be an AUTO filter.
 724                          */
 725                         EFX_STATIC_ASSERT(EFX_FILTER_NPRI == 2);
 726                         EFSYS_ASSERT(spec->efs_priority == EFX_FILTER_PRI_AUTO);
 727                         if (saved_spec->efs_overridden_spec != NULL) {
 728                                 *action = EF10_FILTER_ADD_REFRESH;
 729                         } else {
 730                                 overridden = spec;
 731                                 *action = EF10_FILTER_ADD_STORE;
 732                         }
 733                 }
 734         }
 735
 736         *overridden_spec = overridden;
 737 }
 738
 739 static  __checkReturn   efx_rc_t
 740 ef10_filter_add_execute_action(
 741         __in            efx_nic_t *enp,
 742         __in            efx_filter_spec_t *saved_spec,
 743         __in            efx_filter_spec_t *spec,
 744         __in            efx_filter_spec_t *overridden_spec,
 745         __in            enum ef10_filter_add_action_e action,
 746         __in            int ins_index)
 747 {
 748         ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table;
 749         efsys_lock_state_t state;
 750         efx_rc_t rc;
 751
 752         EFSYS_LOCK(enp->en_eslp, state);
 753
 754         if (action == EF10_FILTER_ADD_REFRESH) {
 755                 ef10_filter_set_entry_not_auto_old(eftp, ins_index);
 756                 goto out_unlock;
 757         } else if (action == EF10_FILTER_ADD_STORE) {
 758                 EFSYS_ASSERT(overridden_spec != NULL);
 759                 saved_spec->efs_overridden_spec = overridden_spec;
 760                 goto out_unlock;
 761         }
 762
 763         EFSYS_UNLOCK(enp->en_eslp, state);
 764
 765         switch (action) {
 766         case EF10_FILTER_ADD_REPLACE:
 767                 /*
 768                  * On replacing the filter handle may change after a
 769                  * successful replace operation.
 770                  */
 771                 rc = efx_mcdi_filter_op_add(enp, spec,
 772                     MC_CMD_FILTER_OP_IN_OP_REPLACE,
 773                     &eftp->eft_entry[ins_index].efe_handle);
 774                 break;
 775         case EF10_FILTER_ADD_NEW:
 776                 if (ef10_filter_is_exclusive(spec)) {
 777                         rc = efx_mcdi_filter_op_add(enp, spec,
 778                             MC_CMD_FILTER_OP_IN_OP_INSERT,
 779                             &eftp->eft_entry[ins_index].efe_handle);
 780                 } else {
 781                         rc = efx_mcdi_filter_op_add(enp, spec,
 782                             MC_CMD_FILTER_OP_IN_OP_SUBSCRIBE,
 783                             &eftp->eft_entry[ins_index].efe_handle);
 784                 }
 785                 break;
 786         default:
 787                 rc = EINVAL;
 788                 EFSYS_ASSERT(0);
 789                 break;
 790         }
 791         if (rc != 0)
 792                 goto fail1;
 793
 794         EFSYS_LOCK(enp->en_eslp, state);
 795
 796         if (action == EF10_FILTER_ADD_REPLACE) {
 797                 /* Update the fields that may differ */
 798                 saved_spec->efs_priority = spec->efs_priority;
 799                 saved_spec->efs_flags = spec->efs_flags;
 800                 saved_spec->efs_rss_context = spec->efs_rss_context;
 801                 saved_spec->efs_dmaq_id = spec->efs_dmaq_id;
 802
 803                 if (overridden_spec != NULL)
 804                         saved_spec->efs_overridden_spec = overridden_spec;
 805         }
 806
 807 out_unlock:
 808         EFSYS_UNLOCK(enp->en_eslp, state);
 809
 810         return (0);
 811
 812 fail1:
 813         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 814
 815         return (rc);
 816 }
 817
 818 /*
 819  * An arbitrary search limit for the software hash table. As per the linux net
 820  * driver.
 821  */
 822 #define EF10_FILTER_SEARCH_LIMIT 200
 823
 824 static  __checkReturn   efx_rc_t
 825 ef10_filter_add_internal(
 826         __in            efx_nic_t *enp,
 827         __inout         efx_filter_spec_t *spec,
 828         __in            efx_filter_replacement_policy_t policy,
 829         __out_opt       uint32_t *filter_id)
 830 {
 831         efx_rc_t rc;
 832         ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table;
 833         enum ef10_filter_add_action_e action;
 834         efx_filter_spec_t *overridden_spec = NULL;
 835         efx_filter_spec_t *saved_spec;
 836         uint32_t hash;
 837         unsigned int depth;
 838         int ins_index;
 839         efsys_lock_state_t state;
 840         boolean_t locked = B_FALSE;
 841
 842         EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
 843
 844         EFSYS_ASSERT(spec->efs_overridden_spec == NULL);
 845
 846         hash = ef10_filter_hash(spec);
 847
 848         /*
 849          * FIXME: Add support for inserting filters of different priorities
 850          * and removing lower priority multicast filters (bug 42378)
 851          */
 852
 853         /*
 854          * Find any existing filters with the same match tuple or
 855          * else a free slot to insert at.  If any of them are busy,
 856          * we have to wait and retry.
 857          */
 858 retry:
 859         EFSYS_LOCK(enp->en_eslp, state);
 860         locked = B_TRUE;
 861
 862         ins_index = -1;
 863
 864         for (depth = 1; depth <= EF10_FILTER_SEARCH_LIMIT; depth++) {
 865                 unsigned int probe_index;
 866                 efx_filter_spec_t *probe_spec;
 867
 868                 probe_index = (hash + depth) & (EFX_EF10_FILTER_TBL_ROWS - 1);
 869                 probe_spec = ef10_filter_entry_spec(eftp, probe_index);
 870
 871                 if (probe_spec == NULL) {
 872                         if (ins_index < 0)
 873                                 ins_index = probe_index;
 874                 } else if (ef10_filter_equal(spec, probe_spec)) {
 875                         boolean_t found;
 876
 877                         if (ef10_filter_entry_is_busy(eftp, probe_index)) {
 878                                 EFSYS_UNLOCK(enp->en_eslp, state);
 879                                 locked = B_FALSE;
 880                                 goto retry;
 881                         }
 882
 883                         rc = ef10_filter_add_lookup_equal_spec(spec,
 884                             probe_spec, policy, &found);
 885                         if (rc != 0)
 886                                 goto fail1;
 887
 888                         if (found != B_FALSE) {
 889                                 ins_index = probe_index;
 890                                 break;
 891                         }
 892                 }
 893         }
 894
 895         /*
 896          * Once we reach the maximum search depth, use the first suitable slot
 897          * or return EBUSY if there was none.
 898          */
 899         if (ins_index < 0) {
 900                 rc = EBUSY;
 901                 goto fail2;
 902         }
 903
 904         /*
 905          * Mark software table entry busy. We might yet fail to insert,
 906          * but any attempt to insert a conflicting filter while we're
 907          * waiting for the firmware must find the busy entry.
 908          */
 909         ef10_filter_set_entry_busy(eftp, ins_index);
 910
 911         saved_spec = ef10_filter_entry_spec(eftp, ins_index);
 912         ef10_filter_add_select_action(saved_spec, spec, &action,
 913             &overridden_spec);
 914
 915         /*
 916          * Allocate a new filter if found entry is empty or
 917          * a filter should be overridden.
 918          */
 919         if (overridden_spec != NULL || saved_spec == NULL) {
 920                 efx_filter_spec_t *new_spec;
 921
 922                 EFSYS_UNLOCK(enp->en_eslp, state);
 923                 locked = B_FALSE;
 924
 925                 EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (*new_spec), new_spec);
 926                 if (new_spec == NULL) {
 927                         rc = ENOMEM;
 928                         overridden_spec = NULL;
 929                         goto fail3;
 930                 }
 931
 932                 EFSYS_LOCK(enp->en_eslp, state);
 933                 locked = B_TRUE;
 934
 935                 if (saved_spec == NULL) {
 936                         *new_spec = *spec;
 937                         ef10_filter_set_entry(eftp, ins_index, new_spec);
 938                 } else {
 939                         *new_spec = *overridden_spec;
 940                         overridden_spec = new_spec;
 941                 }
 942         }
 943
 944         EFSYS_UNLOCK(enp->en_eslp, state);
 945         locked = B_FALSE;
 946
 947         rc = ef10_filter_add_execute_action(enp, saved_spec, spec,
 948             overridden_spec, action, ins_index);
 949         if (rc != 0)
 950                 goto fail4;
 951
 952         if (filter_id)
 953                 *filter_id = ins_index;
 954
 955         EFSYS_LOCK(enp->en_eslp, state);
 956         ef10_filter_set_entry_not_busy(eftp, ins_index);
 957         EFSYS_UNLOCK(enp->en_eslp, state);
 958
 959         return (0);
 960
 961 fail4:
 962         EFSYS_PROBE(fail4);
 963
 964         EFSYS_ASSERT(locked == B_FALSE);
 965         EFSYS_LOCK(enp->en_eslp, state);
 966
 967         if (action == EF10_FILTER_ADD_NEW) {
 968                 EFSYS_KMEM_FREE(enp->en_esip, sizeof (*spec),
 969                     ef10_filter_entry_spec(eftp, ins_index));
 970                 ef10_filter_set_entry(eftp, ins_index, NULL);
 971         }
 972
 973         EFSYS_UNLOCK(enp->en_eslp, state);
 974
 975         if (overridden_spec != NULL)
 976                 EFSYS_KMEM_FREE(enp->en_esip, sizeof (*spec), overridden_spec);
 977
 978 fail3:
 979         EFSYS_PROBE(fail3);
 980
 981         EFSYS_ASSERT(locked == B_FALSE);
 982         EFSYS_LOCK(enp->en_eslp, state);
 983
 984         ef10_filter_set_entry_not_busy(eftp, ins_index);
 985
 986         EFSYS_UNLOCK(enp->en_eslp, state);
 987
 988 fail2:
 989         EFSYS_PROBE(fail2);
 990
 991 fail1:
 992         EFSYS_PROBE1(fail1, efx_rc_t, rc);
 993
 994         if (locked)
 995                 EFSYS_UNLOCK(enp->en_eslp, state);
 996
 997         return (rc);
 998 }
 999
1000         __checkReturn   efx_rc_t
1001 ef10_filter_add(
1002         __in            efx_nic_t *enp,
1003         __inout         efx_filter_spec_t *spec,
1004         __in            enum efx_filter_replacement_policy_e policy)
1005 {
1006         efx_rc_t rc;
1007
1008         rc = ef10_filter_add_internal(enp, spec, policy, NULL);
1009         if (rc != 0)
1010                 goto fail1;
1011
1012         return (0);
1013
1014 fail1:
1015         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1016
1017         return (rc);
1018 }
1019
1020 /*
1021  * Delete a filter by index from the filter table with priority
1022  * that is not higher than specified.
1023  */
1024 static  __checkReturn   efx_rc_t
1025 ef10_filter_delete_internal(
1026         __in            efx_nic_t *enp,
1027         __in            uint32_t filter_id,
1028         __in            efx_filter_priority_t priority)
1029 {
1030         efx_rc_t rc;
1031         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
1032         efx_filter_spec_t *spec;
1033         efsys_lock_state_t state;
1034         uint32_t filter_idx = filter_id % EFX_EF10_FILTER_TBL_ROWS;
1035
1036         /*
1037          * Find the software table entry and mark it busy.  Don't
1038          * remove it yet; any attempt to update while we're waiting
1039          * for the firmware must find the busy entry.
1040          *
1041          * FIXME: What if the busy flag is never cleared?
1042          */
1043         EFSYS_LOCK(enp->en_eslp, state);
1044         while (ef10_filter_entry_is_busy(table, filter_idx)) {
1045                 EFSYS_UNLOCK(enp->en_eslp, state);
1046                 EFSYS_SPIN(1);
1047                 EFSYS_LOCK(enp->en_eslp, state);
1048         }
1049         if ((spec = ef10_filter_entry_spec(table, filter_idx)) != NULL) {
1050                 if (spec->efs_priority <= priority)
1051                         ef10_filter_set_entry_busy(table, filter_idx);
1052         }
1053         EFSYS_UNLOCK(enp->en_eslp, state);
1054
1055         if (spec == NULL) {
1056                 rc = ENOENT;
1057                 goto fail1;
1058         }
1059
1060         if (spec->efs_priority > priority) {
1061                 /*
1062                  * Applied filter stays, but overridden filter is removed since
1063                  * next user request to delete the applied filter should not
1064                  * restore outdated filter.
1065                  */
1066                 if (spec->efs_overridden_spec != NULL) {
1067                         EFSYS_ASSERT(spec->efs_overridden_spec->efs_overridden_spec ==
1068                             NULL);
1069                         EFSYS_KMEM_FREE(enp->en_esip, sizeof (*spec),
1070                             spec->efs_overridden_spec);
1071                         spec->efs_overridden_spec = NULL;
1072                 }
1073         } else {
1074                 /*
1075                  * Try to remove the hardware filter or replace it with the
1076                  * saved automatic filter. This may fail if the MC has
1077                  * rebooted (which frees all hardware filter resources).
1078                  */
1079                 if (spec->efs_overridden_spec != NULL) {
1080                         rc = efx_mcdi_filter_op_add(enp,
1081                             spec->efs_overridden_spec,
1082                             MC_CMD_FILTER_OP_IN_OP_REPLACE,
1083                             &table->eft_entry[filter_idx].efe_handle);
1084                 } else if (ef10_filter_is_exclusive(spec)) {
1085                         rc = efx_mcdi_filter_op_delete(enp,
1086                             MC_CMD_FILTER_OP_IN_OP_REMOVE,
1087                             &table->eft_entry[filter_idx].efe_handle);
1088                 } else {
1089                         rc = efx_mcdi_filter_op_delete(enp,
1090                             MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE,
1091                             &table->eft_entry[filter_idx].efe_handle);
1092                 }
1093
1094                 /* Free the software table entry */
1095                 EFSYS_LOCK(enp->en_eslp, state);
1096                 ef10_filter_set_entry_not_busy(table, filter_idx);
1097                 ef10_filter_set_entry(table, filter_idx,
1098                     spec->efs_overridden_spec);
1099                 EFSYS_UNLOCK(enp->en_eslp, state);
1100
1101                 EFSYS_KMEM_FREE(enp->en_esip, sizeof (*spec), spec);
1102
1103                 /* Check result of hardware filter removal */
1104                 if (rc != 0)
1105                         goto fail2;
1106         }
1107
1108         return (0);
1109
1110 fail2:
1111         EFSYS_PROBE(fail2);
1112
1113 fail1:
1114         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1115
1116         return (rc);
1117 }
1118
1119 static                  void
1120 ef10_filter_delete_auto(
1121         __in            efx_nic_t *enp,
1122         __in            uint32_t filter_id)
1123 {
1124         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
1125         uint32_t filter_idx = filter_id % EFX_EF10_FILTER_TBL_ROWS;
1126
1127         /*
1128          * AUTO_OLD flag is cleared since the auto filter that is to be removed
1129          * may not be the filter at the specified index itself, but the filter
1130          * that is overridden by it.
1131          */
1132         ef10_filter_set_entry_not_auto_old(table, filter_idx);
1133
1134         (void) ef10_filter_delete_internal(enp, filter_idx,
1135             EFX_FILTER_PRI_AUTO);
1136 }
1137
1138         __checkReturn   efx_rc_t
1139 ef10_filter_delete(
1140         __in            efx_nic_t *enp,
1141         __inout         efx_filter_spec_t *spec)
1142 {
1143         efx_rc_t rc;
1144         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
1145         efx_filter_spec_t *saved_spec;
1146         unsigned int hash;
1147         unsigned int depth;
1148         unsigned int i;
1149         efsys_lock_state_t state;
1150         boolean_t locked = B_FALSE;
1151
1152         EFSYS_ASSERT(EFX_FAMILY_IS_EF10(enp));
1153
1154         hash = ef10_filter_hash(spec);
1155
1156         EFSYS_LOCK(enp->en_eslp, state);
1157         locked = B_TRUE;
1158
1159         depth = 1;
1160         for (;;) {
1161                 i = (hash + depth) & (EFX_EF10_FILTER_TBL_ROWS - 1);
1162                 saved_spec = ef10_filter_entry_spec(table, i);
1163                 if (saved_spec && ef10_filter_equal(spec, saved_spec) &&
1164                     ef10_filter_same_dest(spec, saved_spec)) {
1165                         break;
1166                 }
1167                 if (depth == EF10_FILTER_SEARCH_LIMIT) {
1168                         rc = ENOENT;
1169                         goto fail1;
1170                 }
1171                 depth++;
1172         }
1173
1174         EFSYS_UNLOCK(enp->en_eslp, state);
1175         locked = B_FALSE;
1176
1177         rc = ef10_filter_delete_internal(enp, i, EFX_FILTER_PRI_MANUAL);
1178         if (rc != 0)
1179                 goto fail2;
1180
1181         return (0);
1182
1183 fail2:
1184         EFSYS_PROBE(fail2);
1185
1186 fail1:
1187         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1188
1189         if (locked)
1190                 EFSYS_UNLOCK(enp->en_eslp, state);
1191
1192         return (rc);
1193 }
1194
1195 static  __checkReturn   efx_rc_t
1196 efx_mcdi_get_parser_disp_info(
1197         __in                            efx_nic_t *enp,
1198         __out_ecount(buffer_length)     uint32_t *buffer,
1199         __in                            size_t buffer_length,
1200         __in                            boolean_t encap,
1201         __out                           size_t *list_lengthp)
1202 {
1203         efx_mcdi_req_t req;
1204         EFX_MCDI_DECLARE_BUF(payload, MC_CMD_GET_PARSER_DISP_INFO_IN_LEN,
1205                 MC_CMD_GET_PARSER_DISP_INFO_OUT_LENMAX);
1206         size_t matches_count;
1207         size_t list_size;
1208         efx_rc_t rc;
1209
1210         req.emr_cmd = MC_CMD_GET_PARSER_DISP_INFO;
1211         req.emr_in_buf = payload;
1212         req.emr_in_length = MC_CMD_GET_PARSER_DISP_INFO_IN_LEN;
1213         req.emr_out_buf = payload;
1214         req.emr_out_length = MC_CMD_GET_PARSER_DISP_INFO_OUT_LENMAX;
1215
1216         MCDI_IN_SET_DWORD(req, GET_PARSER_DISP_INFO_OUT_OP, encap ?
1217             MC_CMD_GET_PARSER_DISP_INFO_IN_OP_GET_SUPPORTED_ENCAP_RX_MATCHES :
1218             MC_CMD_GET_PARSER_DISP_INFO_IN_OP_GET_SUPPORTED_RX_MATCHES);
1219
1220         efx_mcdi_execute(enp, &req);
1221
1222         if (req.emr_rc != 0) {
1223                 rc = req.emr_rc;
1224                 goto fail1;
1225         }
1226
1227         matches_count = MCDI_OUT_DWORD(req,
1228             GET_PARSER_DISP_INFO_OUT_NUM_SUPPORTED_MATCHES);
1229
1230         if (req.emr_out_length_used <
1231             MC_CMD_GET_PARSER_DISP_INFO_OUT_LEN(matches_count)) {
1232                 rc = EMSGSIZE;
1233                 goto fail2;
1234         }
1235
1236         *list_lengthp = matches_count;
1237
1238         if (buffer_length < matches_count) {
1239                 rc = ENOSPC;
1240                 goto fail3;
1241         }
1242
1243         /*
1244          * Check that the elements in the list in the MCDI response are the size
1245          * we expect, so we can just copy them directly. Any conversion of the
1246          * flags is handled by the caller.
1247          */
1248         EFX_STATIC_ASSERT(sizeof (uint32_t) ==
1249             MC_CMD_GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES_LEN);
1250
1251         list_size = matches_count *
1252                 MC_CMD_GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES_LEN;
1253         memcpy(buffer,
1254             MCDI_OUT2(req, uint32_t,
1255                     GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES),
1256             list_size);
1257
1258         return (0);
1259
1260 fail3:
1261         EFSYS_PROBE(fail3);
1262 fail2:
1263         EFSYS_PROBE(fail2);
1264 fail1:
1265         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1266
1267         return (rc);
1268 }
1269
1270         __checkReturn   efx_rc_t
1271 ef10_filter_supported_filters(
1272         __in                            efx_nic_t *enp,
1273         __out_ecount(buffer_length)     uint32_t *buffer,
1274         __in                            size_t buffer_length,
1275         __out                           size_t *list_lengthp)
1276 {
1277         efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
1278         size_t mcdi_list_length;
1279         size_t mcdi_encap_list_length;
1280         size_t list_length;
1281         uint32_t i;
1282         uint32_t next_buf_idx;
1283         size_t next_buf_length;
1284         efx_rc_t rc;
1285         boolean_t no_space = B_FALSE;
1286         efx_filter_match_flags_t all_filter_flags =
1287             (EFX_FILTER_MATCH_REM_HOST | EFX_FILTER_MATCH_LOC_HOST |
1288             EFX_FILTER_MATCH_REM_MAC | EFX_FILTER_MATCH_REM_PORT |
1289             EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_LOC_PORT |
1290             EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_INNER_VID |
1291             EFX_FILTER_MATCH_OUTER_VID | EFX_FILTER_MATCH_IP_PROTO |
1292             EFX_FILTER_MATCH_VNI_OR_VSID |
1293             EFX_FILTER_MATCH_IFRM_LOC_MAC |
1294             EFX_FILTER_MATCH_IFRM_UNKNOWN_MCAST_DST |
1295             EFX_FILTER_MATCH_IFRM_UNKNOWN_UCAST_DST |
1296             EFX_FILTER_MATCH_ENCAP_TYPE |
1297             EFX_FILTER_MATCH_UNKNOWN_MCAST_DST |
1298             EFX_FILTER_MATCH_UNKNOWN_UCAST_DST);
1299
1300         /*
1301          * Two calls to MC_CMD_GET_PARSER_DISP_INFO are needed: one to get the
1302          * list of supported filters for ordinary packets, and then another to
1303          * get the list of supported filters for encapsulated packets. To
1304          * distinguish the second list from the first, the
1305          * EFX_FILTER_MATCH_ENCAP_TYPE flag is added to each filter for
1306          * encapsulated packets.
1307          */
1308         rc = efx_mcdi_get_parser_disp_info(enp, buffer, buffer_length, B_FALSE,
1309             &mcdi_list_length);
1310         if (rc != 0) {
1311                 if (rc == ENOSPC)
1312                         no_space = B_TRUE;
1313                 else
1314                         goto fail1;
1315         }
1316
1317         if (no_space) {
1318                 next_buf_idx = 0;
1319                 next_buf_length = 0;
1320         } else {
1321                 EFSYS_ASSERT(mcdi_list_length <= buffer_length);
1322                 next_buf_idx = mcdi_list_length;
1323                 next_buf_length = buffer_length - mcdi_list_length;
1324         }
1325
1326         if (encp->enc_tunnel_encapsulations_supported != 0) {
1327                 rc = efx_mcdi_get_parser_disp_info(enp, &buffer[next_buf_idx],
1328                     next_buf_length, B_TRUE, &mcdi_encap_list_length);
1329                 if (rc != 0) {
1330                         if (rc == ENOSPC)
1331                                 no_space = B_TRUE;
1332                         else
1333                                 goto fail2;
1334                 } else {
1335                         for (i = next_buf_idx;
1336                             i < next_buf_idx + mcdi_encap_list_length; i++)
1337                                 buffer[i] |= EFX_FILTER_MATCH_ENCAP_TYPE;
1338                 }
1339         } else {
1340                 mcdi_encap_list_length = 0;
1341         }
1342
1343         if (no_space) {
1344                 *list_lengthp = mcdi_list_length + mcdi_encap_list_length;
1345                 rc = ENOSPC;
1346                 goto fail3;
1347         }
1348
1349         /*
1350          * The static assertions in ef10_filter_init() ensure that the values of
1351          * the EFX_FILTER_MATCH flags match those used by MCDI, so they don't
1352          * need to be converted.
1353          *
1354          * In case support is added to MCDI for additional flags, remove any
1355          * matches from the list which include flags we don't support. The order
1356          * of the matches is preserved as they are ordered from highest to
1357          * lowest priority.
1358          */
1359         EFSYS_ASSERT(mcdi_list_length + mcdi_encap_list_length <=
1360             buffer_length);
1361         list_length = 0;
1362         for (i = 0; i < mcdi_list_length + mcdi_encap_list_length; i++) {
1363                 if ((buffer[i] & ~all_filter_flags) == 0) {
1364                         buffer[list_length] = buffer[i];
1365                         list_length++;
1366                 }
1367         }
1368
1369         *list_lengthp = list_length;
1370
1371         return (0);
1372
1373 fail3:
1374         EFSYS_PROBE(fail3);
1375 fail2:
1376         EFSYS_PROBE(fail2);
1377 fail1:
1378         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1379
1380         return (rc);
1381 }
1382
1383 static  __checkReturn   efx_rc_t
1384 ef10_filter_insert_unicast(
1385         __in                            efx_nic_t *enp,
1386         __in_ecount(6)                  uint8_t const *addr,
1387         __in                            efx_filter_flags_t filter_flags)
1388 {
1389         ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table;
1390         efx_filter_spec_t spec;
1391         efx_rc_t rc;
1392
1393         /* Insert the filter for the local station address */
1394         efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO,
1395             filter_flags,
1396             eftp->eft_default_rxq);
1397         rc = efx_filter_spec_set_eth_local(&spec, EFX_FILTER_SPEC_VID_UNSPEC,
1398             addr);
1399         if (rc != 0)
1400                 goto fail1;
1401
1402         rc = ef10_filter_add_internal(enp, &spec, EFX_FILTER_REPLACEMENT_NEVER,
1403             &eftp->eft_unicst_filter_indexes[eftp->eft_unicst_filter_count]);
1404         if (rc != 0)
1405                 goto fail2;
1406
1407         eftp->eft_unicst_filter_count++;
1408         EFSYS_ASSERT(eftp->eft_unicst_filter_count <=
1409                     EFX_EF10_FILTER_UNICAST_FILTERS_MAX);
1410
1411         return (0);
1412
1413 fail2:
1414         EFSYS_PROBE(fail2);
1415 fail1:
1416         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1417         return (rc);
1418 }
1419
1420 static  __checkReturn   efx_rc_t
1421 ef10_filter_insert_all_unicast(
1422         __in                            efx_nic_t *enp,
1423         __in                            efx_filter_flags_t filter_flags)
1424 {
1425         ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table;
1426         efx_filter_spec_t spec;
1427         efx_rc_t rc;
1428
1429         /* Insert the unknown unicast filter */
1430         efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO,
1431             filter_flags,
1432             eftp->eft_default_rxq);
1433         rc = efx_filter_spec_set_uc_def(&spec);
1434         if (rc != 0)
1435                 goto fail1;
1436         rc = ef10_filter_add_internal(enp, &spec, EFX_FILTER_REPLACEMENT_NEVER,
1437             &eftp->eft_unicst_filter_indexes[eftp->eft_unicst_filter_count]);
1438         if (rc != 0)
1439                 goto fail2;
1440
1441         eftp->eft_unicst_filter_count++;
1442         EFSYS_ASSERT(eftp->eft_unicst_filter_count <=
1443                     EFX_EF10_FILTER_UNICAST_FILTERS_MAX);
1444
1445         return (0);
1446
1447 fail2:
1448         EFSYS_PROBE(fail2);
1449 fail1:
1450         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1451         return (rc);
1452 }
1453
1454 static  __checkReturn   efx_rc_t
1455 ef10_filter_insert_multicast_list(
1456         __in                            efx_nic_t *enp,
1457         __in                            boolean_t mulcst,
1458         __in                            boolean_t brdcst,
1459         __in_ecount(6*count)            uint8_t const *addrs,
1460         __in                            uint32_t count,
1461         __in                            efx_filter_flags_t filter_flags,
1462         __in                            boolean_t rollback)
1463 {
1464         ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table;
1465         efx_filter_spec_t spec;
1466         uint8_t addr[6];
1467         uint32_t i;
1468         uint32_t filter_index;
1469         uint32_t filter_count;
1470         efx_rc_t rc;
1471
1472         if (mulcst == B_FALSE)
1473                 count = 0;
1474
1475         if (count + (brdcst ? 1 : 0) >
1476             EFX_ARRAY_SIZE(eftp->eft_mulcst_filter_indexes)) {
1477                 /* Too many MAC addresses */
1478                 rc = EINVAL;
1479                 goto fail1;
1480         }
1481
1482         /* Insert/renew multicast address list filters */
1483         filter_count = 0;
1484         for (i = 0; i < count; i++) {
1485                 efx_filter_spec_init_rx(&spec,
1486                     EFX_FILTER_PRI_AUTO,
1487                     filter_flags,
1488                     eftp->eft_default_rxq);
1489
1490                 rc = efx_filter_spec_set_eth_local(&spec,
1491                     EFX_FILTER_SPEC_VID_UNSPEC,
1492                     &addrs[i * EFX_MAC_ADDR_LEN]);
1493                 if (rc != 0) {
1494                         if (rollback == B_TRUE) {
1495                                 /* Only stop upon failure if told to rollback */
1496                                 goto rollback;
1497                         } else {
1498                                 /*
1499                                  * Don't try to add a filter with a corrupt
1500                                  * specification.
1501                                  */
1502                                 continue;
1503                         }
1504                 }
1505
1506                 rc = ef10_filter_add_internal(enp, &spec,
1507                     EFX_FILTER_REPLACEMENT_NEVER, &filter_index);
1508
1509                 if (rc == 0) {
1510                         eftp->eft_mulcst_filter_indexes[filter_count] =
1511                                 filter_index;
1512                         filter_count++;
1513                 } else if (rollback == B_TRUE) {
1514                         /* Only stop upon failure if told to rollback */
1515                         goto rollback;
1516                 }
1517
1518         }
1519
1520         if (brdcst == B_TRUE) {
1521                 /* Insert/renew broadcast address filter */
1522                 efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO,
1523                     filter_flags,
1524                     eftp->eft_default_rxq);
1525
1526                 EFX_MAC_BROADCAST_ADDR_SET(addr);
1527                 rc = efx_filter_spec_set_eth_local(&spec,
1528                     EFX_FILTER_SPEC_VID_UNSPEC, addr);
1529                 if ((rc != 0) && (rollback == B_TRUE)) {
1530                         /* Only stop upon failure if told to rollback */
1531                         goto rollback;
1532                 }
1533
1534                 rc = ef10_filter_add_internal(enp, &spec,
1535                     EFX_FILTER_REPLACEMENT_NEVER, &filter_index);
1536
1537                 if (rc == 0) {
1538                         eftp->eft_mulcst_filter_indexes[filter_count] =
1539                                 filter_index;
1540                         filter_count++;
1541                 } else if (rollback == B_TRUE) {
1542                         /* Only stop upon failure if told to rollback */
1543                         goto rollback;
1544                 }
1545         }
1546
1547         eftp->eft_mulcst_filter_count = filter_count;
1548         eftp->eft_using_all_mulcst = B_FALSE;
1549
1550         return (0);
1551
1552 rollback:
1553         /* Remove any filters we have inserted */
1554         i = filter_count;
1555         while (i--) {
1556                 ef10_filter_delete_auto(enp,
1557                     eftp->eft_mulcst_filter_indexes[i]);
1558         }
1559         eftp->eft_mulcst_filter_count = 0;
1560
1561 fail1:
1562         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1563
1564         return (rc);
1565 }
1566
1567 static  __checkReturn   efx_rc_t
1568 ef10_filter_insert_all_multicast(
1569         __in                            efx_nic_t *enp,
1570         __in                            efx_filter_flags_t filter_flags)
1571 {
1572         ef10_filter_table_t *eftp = enp->en_filter.ef_ef10_filter_table;
1573         efx_filter_spec_t spec;
1574         efx_rc_t rc;
1575
1576         /* Insert the unknown multicast filter */
1577         efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO,
1578             filter_flags,
1579             eftp->eft_default_rxq);
1580         rc = efx_filter_spec_set_mc_def(&spec);
1581         if (rc != 0)
1582                 goto fail1;
1583
1584         rc = ef10_filter_add_internal(enp, &spec, EFX_FILTER_REPLACEMENT_NEVER,
1585             &eftp->eft_mulcst_filter_indexes[0]);
1586         if (rc != 0)
1587                 goto fail2;
1588
1589         eftp->eft_mulcst_filter_count = 1;
1590         eftp->eft_using_all_mulcst = B_TRUE;
1591
1592         /*
1593          * FIXME: If brdcst == B_FALSE, add a filter to drop broadcast traffic.
1594          */
1595
1596         return (0);
1597
1598 fail2:
1599         EFSYS_PROBE(fail2);
1600 fail1:
1601         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1602
1603         return (rc);
1604 }
1605
1606 typedef struct ef10_filter_encap_entry_s {
1607         uint16_t                ether_type;
1608         efx_tunnel_protocol_t   encap_type;
1609         uint32_t                inner_frame_match;
1610 } ef10_filter_encap_entry_t;
1611
1612 #define EF10_ENCAP_FILTER_ENTRY(ipv, encap_type, inner_frame_match)     \
1613         { EFX_ETHER_TYPE_##ipv, EFX_TUNNEL_PROTOCOL_##encap_type,       \
1614             EFX_FILTER_INNER_FRAME_MATCH_UNKNOWN_##inner_frame_match }
1615
1616 static ef10_filter_encap_entry_t ef10_filter_encap_list[] = {
1617         EF10_ENCAP_FILTER_ENTRY(IPV4, VXLAN, UCAST_DST),
1618         EF10_ENCAP_FILTER_ENTRY(IPV4, VXLAN, MCAST_DST),
1619         EF10_ENCAP_FILTER_ENTRY(IPV6, VXLAN, UCAST_DST),
1620         EF10_ENCAP_FILTER_ENTRY(IPV6, VXLAN, MCAST_DST),
1621
1622         EF10_ENCAP_FILTER_ENTRY(IPV4, GENEVE, UCAST_DST),
1623         EF10_ENCAP_FILTER_ENTRY(IPV4, GENEVE, MCAST_DST),
1624         EF10_ENCAP_FILTER_ENTRY(IPV6, GENEVE, UCAST_DST),
1625         EF10_ENCAP_FILTER_ENTRY(IPV6, GENEVE, MCAST_DST),
1626
1627         EF10_ENCAP_FILTER_ENTRY(IPV4, NVGRE, UCAST_DST),
1628         EF10_ENCAP_FILTER_ENTRY(IPV4, NVGRE, MCAST_DST),
1629         EF10_ENCAP_FILTER_ENTRY(IPV6, NVGRE, UCAST_DST),
1630         EF10_ENCAP_FILTER_ENTRY(IPV6, NVGRE, MCAST_DST),
1631 };
1632
1633 #undef EF10_ENCAP_FILTER_ENTRY
1634
1635 static  __checkReturn   efx_rc_t
1636 ef10_filter_insert_encap_filters(
1637         __in            efx_nic_t *enp,
1638         __in            boolean_t mulcst,
1639         __in            efx_filter_flags_t filter_flags)
1640 {
1641         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
1642         uint32_t i;
1643         efx_rc_t rc;
1644
1645         EFX_STATIC_ASSERT(EFX_ARRAY_SIZE(ef10_filter_encap_list) <=
1646                             EFX_ARRAY_SIZE(table->eft_encap_filter_indexes));
1647
1648         /*
1649          * On Medford, full-featured firmware can identify packets as being
1650          * tunnel encapsulated, even if no encapsulated packet offloads are in
1651          * use. When packets are identified as such, ordinary filters are not
1652          * applied, only ones specific to encapsulated packets. Hence we need to
1653          * insert filters for encapsulated packets in order to receive them.
1654          *
1655          * Separate filters need to be inserted for each ether type,
1656          * encapsulation type, and inner frame type (unicast or multicast). To
1657          * keep things simple and reduce the number of filters needed, catch-all
1658          * filters for all combinations of types are inserted, even if
1659          * all_unicst or all_mulcst have not been set. (These catch-all filters
1660          * may well, however, fail to insert on unprivileged functions.)
1661          */
1662         table->eft_encap_filter_count = 0;
1663         for (i = 0; i < EFX_ARRAY_SIZE(ef10_filter_encap_list); i++) {
1664                 efx_filter_spec_t spec;
1665                 ef10_filter_encap_entry_t *encap_filter =
1666                         &ef10_filter_encap_list[i];
1667
1668                 /*
1669                  * Skip multicast filters if we've not been asked for
1670                  * any multicast traffic.
1671                  */
1672                 if ((mulcst == B_FALSE) &&
1673                     (encap_filter->inner_frame_match ==
1674                     EFX_FILTER_INNER_FRAME_MATCH_UNKNOWN_MCAST_DST))
1675                         continue;
1676
1677                 efx_filter_spec_init_rx(&spec, EFX_FILTER_PRI_AUTO,
1678                                         filter_flags,
1679                                         table->eft_default_rxq);
1680                 efx_filter_spec_set_ether_type(&spec, encap_filter->ether_type);
1681                 rc = efx_filter_spec_set_encap_type(&spec,
1682                                             encap_filter->encap_type,
1683                                             encap_filter->inner_frame_match);
1684                 if (rc != 0)
1685                         goto fail1;
1686
1687                 rc = ef10_filter_add_internal(enp, &spec,
1688                     EFX_FILTER_REPLACEMENT_NEVER,
1689                     &table->eft_encap_filter_indexes[
1690                                     table->eft_encap_filter_count]);
1691                 if (rc != 0) {
1692                         if (rc != EACCES)
1693                                 goto fail2;
1694                 } else {
1695                         table->eft_encap_filter_count++;
1696                 }
1697         }
1698
1699         return (0);
1700
1701 fail2:
1702         EFSYS_PROBE(fail2);
1703 fail1:
1704         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1705
1706         return (rc);
1707 }
1708
1709 static                  void
1710 ef10_filter_remove_old(
1711         __in            efx_nic_t *enp)
1712 {
1713         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
1714         uint32_t i;
1715
1716         for (i = 0; i < EFX_ARRAY_SIZE(table->eft_entry); i++) {
1717                 if (ef10_filter_entry_is_auto_old(table, i)) {
1718                         ef10_filter_delete_auto(enp, i);
1719                 }
1720         }
1721 }
1722
1723
1724 static  __checkReturn   efx_rc_t
1725 ef10_filter_get_workarounds(
1726         __in                            efx_nic_t *enp)
1727 {
1728         efx_nic_cfg_t *encp = &enp->en_nic_cfg;
1729         uint32_t implemented = 0;
1730         uint32_t enabled = 0;
1731         efx_rc_t rc;
1732
1733         rc = efx_mcdi_get_workarounds(enp, &implemented, &enabled);
1734         if (rc == 0) {
1735                 /* Check if chained multicast filter support is enabled */
1736                 if (implemented & enabled & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807)
1737                         encp->enc_bug26807_workaround = B_TRUE;
1738                 else
1739                         encp->enc_bug26807_workaround = B_FALSE;
1740         } else if (rc == ENOTSUP) {
1741                 /*
1742                  * Firmware is too old to support GET_WORKAROUNDS, and support
1743                  * for this workaround was implemented later.
1744                  */
1745                 encp->enc_bug26807_workaround = B_FALSE;
1746         } else {
1747                 goto fail1;
1748         }
1749
1750         return (0);
1751
1752 fail1:
1753         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1754
1755         return (rc);
1756
1757 }
1758
1759
1760 /*
1761  * Reconfigure all filters.
1762  * If all_unicst and/or all mulcst filters cannot be applied then
1763  * return ENOTSUP (Note the filters for the specified addresses are
1764  * still applied in this case).
1765  */
1766         __checkReturn   efx_rc_t
1767 ef10_filter_reconfigure(
1768         __in                            efx_nic_t *enp,
1769         __in_ecount(6)                  uint8_t const *mac_addr,
1770         __in                            boolean_t all_unicst,
1771         __in                            boolean_t mulcst,
1772         __in                            boolean_t all_mulcst,
1773         __in                            boolean_t brdcst,
1774         __in_ecount(6*count)            uint8_t const *addrs,
1775         __in                            uint32_t count)
1776 {
1777         efx_nic_cfg_t *encp = &enp->en_nic_cfg;
1778         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
1779         efx_filter_flags_t filter_flags;
1780         unsigned int i;
1781         efx_rc_t all_unicst_rc = 0;
1782         efx_rc_t all_mulcst_rc = 0;
1783         efx_rc_t rc;
1784
1785         if (table->eft_default_rxq == NULL) {
1786                 /*
1787                  * Filters direct traffic to the default RXQ, and so cannot be
1788                  * inserted until it is available. Any currently configured
1789                  * filters must be removed (ignore errors in case the MC
1790                  * has rebooted, which removes hardware filters).
1791                  */
1792                 for (i = 0; i < table->eft_unicst_filter_count; i++) {
1793                         ef10_filter_delete_auto(enp,
1794                                         table->eft_unicst_filter_indexes[i]);
1795                 }
1796                 table->eft_unicst_filter_count = 0;
1797
1798                 for (i = 0; i < table->eft_mulcst_filter_count; i++) {
1799                         ef10_filter_delete_auto(enp,
1800                                         table->eft_mulcst_filter_indexes[i]);
1801                 }
1802                 table->eft_mulcst_filter_count = 0;
1803
1804                 for (i = 0; i < table->eft_encap_filter_count; i++) {
1805                         ef10_filter_delete_auto(enp,
1806                                         table->eft_encap_filter_indexes[i]);
1807                 }
1808                 table->eft_encap_filter_count = 0;
1809
1810                 return (0);
1811         }
1812
1813         if (table->eft_using_rss)
1814                 filter_flags = EFX_FILTER_FLAG_RX_RSS;
1815         else
1816                 filter_flags = 0;
1817
1818         /* Mark old filters which may need to be removed */
1819         for (i = 0; i < table->eft_unicst_filter_count; i++) {
1820                 ef10_filter_set_entry_auto_old(table,
1821                                         table->eft_unicst_filter_indexes[i]);
1822         }
1823         for (i = 0; i < table->eft_mulcst_filter_count; i++) {
1824                 ef10_filter_set_entry_auto_old(table,
1825                                         table->eft_mulcst_filter_indexes[i]);
1826         }
1827         for (i = 0; i < table->eft_encap_filter_count; i++) {
1828                 ef10_filter_set_entry_auto_old(table,
1829                                         table->eft_encap_filter_indexes[i]);
1830         }
1831
1832         /*
1833          * Insert or renew unicast filters.
1834          *
1835          * Firmware does not perform chaining on unicast filters. As traffic is
1836          * therefore only delivered to the first matching filter, we should
1837          * always insert the specific filter for our MAC address, to try and
1838          * ensure we get that traffic.
1839          *
1840          * (If the filter for our MAC address has already been inserted by
1841          * another function, we won't receive traffic sent to us, even if we
1842          * insert a unicast mismatch filter. To prevent traffic stealing, this
1843          * therefore relies on the privilege model only allowing functions to
1844          * insert filters for their own MAC address unless explicitly given
1845          * additional privileges by the user. This also means that, even on a
1846          * priviliged function, inserting a unicast mismatch filter may not
1847          * catch all traffic in multi PCI function scenarios.)
1848          */
1849         table->eft_unicst_filter_count = 0;
1850         rc = ef10_filter_insert_unicast(enp, mac_addr, filter_flags);
1851         if (all_unicst || (rc != 0)) {
1852                 all_unicst_rc = ef10_filter_insert_all_unicast(enp,
1853                                                     filter_flags);
1854                 if ((rc != 0) && (all_unicst_rc != 0))
1855                         goto fail1;
1856         }
1857
1858         /*
1859          * WORKAROUND_BUG26807 controls firmware support for chained multicast
1860          * filters, and can only be enabled or disabled when the hardware filter
1861          * table is empty.
1862          *
1863          * Chained multicast filters require support from the datapath firmware,
1864          * and may not be available (e.g. low-latency variants or old Huntington
1865          * firmware).
1866          *
1867          * Firmware will reset (FLR) functions which have inserted filters in
1868          * the hardware filter table when the workaround is enabled/disabled.
1869          * Functions without any hardware filters are not reset.
1870          *
1871          * Re-check if the workaround is enabled after adding unicast hardware
1872          * filters. This ensures that encp->enc_bug26807_workaround matches the
1873          * firmware state, and that later changes to enable/disable the
1874          * workaround will result in this function seeing a reset (FLR).
1875          *
1876          * In common-code drivers, we only support multiple PCI function
1877          * scenarios with firmware that supports multicast chaining, so we can
1878          * assume it is enabled for such cases and hence simplify the filter
1879          * insertion logic. Firmware that does not support multicast chaining
1880          * does not support multiple PCI function configurations either, so
1881          * filter insertion is much simpler and the same strategies can still be
1882          * used.
1883          */
1884         if ((rc = ef10_filter_get_workarounds(enp)) != 0)
1885                 goto fail2;
1886
1887         if ((table->eft_using_all_mulcst != all_mulcst) &&
1888             (encp->enc_bug26807_workaround == B_TRUE)) {
1889                 /*
1890                  * Multicast filter chaining is enabled, so traffic that matches
1891                  * more than one multicast filter will be replicated and
1892                  * delivered to multiple recipients.  To avoid this duplicate
1893                  * delivery, remove old multicast filters before inserting new
1894                  * multicast filters.
1895                  */
1896                 ef10_filter_remove_old(enp);
1897         }
1898
1899         /* Insert or renew multicast filters */
1900         if (all_mulcst == B_TRUE) {
1901                 /*
1902                  * Insert the all multicast filter. If that fails, try to insert
1903                  * all of our multicast filters (but without rollback on
1904                  * failure).
1905                  */
1906                 all_mulcst_rc = ef10_filter_insert_all_multicast(enp,
1907                                                             filter_flags);
1908                 if (all_mulcst_rc != 0) {
1909                         rc = ef10_filter_insert_multicast_list(enp, B_TRUE,
1910                             brdcst, addrs, count, filter_flags, B_FALSE);
1911                         if (rc != 0)
1912                                 goto fail3;
1913                 }
1914         } else {
1915                 /*
1916                  * Insert filters for multicast addresses.
1917                  * If any insertion fails, then rollback and try to insert the
1918                  * all multicast filter instead.
1919                  * If that also fails, try to insert all of the multicast
1920                  * filters (but without rollback on failure).
1921                  */
1922                 rc = ef10_filter_insert_multicast_list(enp, mulcst, brdcst,
1923                             addrs, count, filter_flags, B_TRUE);
1924                 if (rc != 0) {
1925                         if ((table->eft_using_all_mulcst == B_FALSE) &&
1926                             (encp->enc_bug26807_workaround == B_TRUE)) {
1927                                 /*
1928                                  * Multicast filter chaining is on, so remove
1929                                  * old filters before inserting the multicast
1930                                  * all filter to avoid duplicate delivery caused
1931                                  * by packets matching multiple filters.
1932                                  */
1933                                 ef10_filter_remove_old(enp);
1934                         }
1935
1936                         rc = ef10_filter_insert_all_multicast(enp,
1937                                                             filter_flags);
1938                         if (rc != 0) {
1939                                 rc = ef10_filter_insert_multicast_list(enp,
1940                                     mulcst, brdcst,
1941                                     addrs, count, filter_flags, B_FALSE);
1942                                 if (rc != 0)
1943                                         goto fail4;
1944                         }
1945                 }
1946         }
1947
1948         if (encp->enc_tunnel_encapsulations_supported != 0) {
1949                 /* Try to insert filters for encapsulated packets. */
1950                 (void) ef10_filter_insert_encap_filters(enp,
1951                                             mulcst || all_mulcst || brdcst,
1952                                             filter_flags);
1953         }
1954
1955         /* Remove old filters which were not renewed */
1956         ef10_filter_remove_old(enp);
1957
1958         /* report if any optional flags were rejected */
1959         if (((all_unicst != B_FALSE) && (all_unicst_rc != 0)) ||
1960             ((all_mulcst != B_FALSE) && (all_mulcst_rc != 0))) {
1961                 rc = ENOTSUP;
1962         }
1963
1964         return (rc);
1965
1966 fail4:
1967         EFSYS_PROBE(fail4);
1968 fail3:
1969         EFSYS_PROBE(fail3);
1970 fail2:
1971         EFSYS_PROBE(fail2);
1972 fail1:
1973         EFSYS_PROBE1(fail1, efx_rc_t, rc);
1974
1975         /* Clear auto old flags */
1976         for (i = 0; i < EFX_ARRAY_SIZE(table->eft_entry); i++) {
1977                 if (ef10_filter_entry_is_auto_old(table, i)) {
1978                         ef10_filter_set_entry_not_auto_old(table, i);
1979                 }
1980         }
1981
1982         return (rc);
1983 }
1984
1985                 void
1986 ef10_filter_get_default_rxq(
1987         __in            efx_nic_t *enp,
1988         __out           efx_rxq_t **erpp,
1989         __out           boolean_t *using_rss)
1990 {
1991         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
1992
1993         *erpp = table->eft_default_rxq;
1994         *using_rss = table->eft_using_rss;
1995 }
1996
1997
1998                 void
1999 ef10_filter_default_rxq_set(
2000         __in            efx_nic_t *enp,
2001         __in            efx_rxq_t *erp,
2002         __in            boolean_t using_rss)
2003 {
2004         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
2005
2006 #if EFSYS_OPT_RX_SCALE
2007         EFSYS_ASSERT((using_rss == B_FALSE) ||
2008             (enp->en_rss_context != EF10_RSS_CONTEXT_INVALID));
2009         table->eft_using_rss = using_rss;
2010 #else
2011         EFSYS_ASSERT(using_rss == B_FALSE);
2012         table->eft_using_rss = B_FALSE;
2013 #endif
2014         table->eft_default_rxq = erp;
2015 }
2016
2017                 void
2018 ef10_filter_default_rxq_clear(
2019         __in            efx_nic_t *enp)
2020 {
2021         ef10_filter_table_t *table = enp->en_filter.ef_ef10_filter_table;
2022
2023         table->eft_default_rxq = NULL;
2024         table->eft_using_rss = B_FALSE;
2025 }
2026
2027
2028 #endif /* EFSYS_OPT_FILTER */
2029
2030 #endif /* EFX_OPTS_EF10() */