drivers/net/bnxt/bnxt_vnic.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2021 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <inttypes.h>
   7
   8 #include <rte_memzone.h>
   9 #include <rte_malloc.h>
  10
  11 #include "bnxt.h"
  12 #include "bnxt_vnic.h"
  13 #include "hsi_struct_def_dpdk.h"
  14
  15 /*
  16  * VNIC Functions
  17  */
  18
  19 void bnxt_prandom_bytes(void *dest_ptr, size_t len)
  20 {
  21         char *dest = (char *)dest_ptr;
  22         uint64_t rb;
  23
  24         while (len) {
  25                 rb = rte_rand();
  26                 if (len >= 8) {
  27                         memcpy(dest, &rb, 8);
  28                         len -= 8;
  29                         dest += 8;
  30                 } else {
  31                         memcpy(dest, &rb, len);
  32                         dest += len;
  33                         len = 0;
  34                 }
  35         }
  36 }
  37
  38 static void bnxt_init_vnics(struct bnxt *bp)
  39 {
  40         struct bnxt_vnic_info *vnic;
  41         uint16_t max_vnics;
  42         int i;
  43
  44         max_vnics = bp->max_vnics;
  45         STAILQ_INIT(&bp->free_vnic_list);
  46         for (i = 0; i < max_vnics; i++) {
  47                 vnic = &bp->vnic_info[i];
  48                 vnic->fw_vnic_id = (uint16_t)HWRM_NA_SIGNATURE;
  49                 vnic->rss_rule = (uint16_t)HWRM_NA_SIGNATURE;
  50                 vnic->cos_rule = (uint16_t)HWRM_NA_SIGNATURE;
  51                 vnic->lb_rule = (uint16_t)HWRM_NA_SIGNATURE;
  52                 vnic->hash_mode =
  53                         HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_DEFAULT;
  54                 vnic->rx_queue_cnt = 0;
  55
  56                 STAILQ_INIT(&vnic->filter);
  57                 STAILQ_INIT(&vnic->flow_list);
  58                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  59         }
  60 }
  61
  62 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
  63 {
  64         struct bnxt_vnic_info *vnic;
  65
  66         /* Find the 1st unused vnic from the free_vnic_list pool*/
  67         vnic = STAILQ_FIRST(&bp->free_vnic_list);
  68         if (!vnic) {
  69                 PMD_DRV_LOG(ERR, "No more free VNIC resources\n");
  70                 return NULL;
  71         }
  72         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
  73         return vnic;
  74 }
  75
  76 void bnxt_free_all_vnics(struct bnxt *bp)
  77 {
  78         struct bnxt_vnic_info *vnic;
  79         unsigned int i;
  80
  81         if (bp->vnic_info == NULL)
  82                 return;
  83
  84         for (i = 0; i < bp->max_vnics; i++) {
  85                 vnic = &bp->vnic_info[i];
  86                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  87                 vnic->rx_queue_cnt = 0;
  88         }
  89 }
  90
  91 void bnxt_free_vnic_attributes(struct bnxt *bp)
  92 {
  93         struct bnxt_vnic_info *vnic;
  94         unsigned int i;
  95
  96         if (bp->vnic_info == NULL)
  97                 return;
  98
  99         for (i = 0; i < bp->max_vnics; i++) {
 100                 vnic = &bp->vnic_info[i];
 101                 if (vnic->rss_mz != NULL) {
 102                         rte_memzone_free(vnic->rss_mz);
 103                         vnic->rss_mz = NULL;
 104                         vnic->rss_hash_key = NULL;
 105                         vnic->rss_table = NULL;
 106                 }
 107         }
 108 }
 109
 110 int bnxt_alloc_vnic_attributes(struct bnxt *bp, bool reconfig)
 111 {
 112         struct bnxt_vnic_info *vnic;
 113         struct rte_pci_device *pdev = bp->pdev;
 114         const struct rte_memzone *mz;
 115         char mz_name[RTE_MEMZONE_NAMESIZE];
 116         uint32_t entry_length;
 117         size_t rss_table_size;
 118         int i;
 119         rte_iova_t mz_phys_addr;
 120
 121         entry_length = HW_HASH_KEY_SIZE;
 122
 123         if (BNXT_CHIP_P5(bp))
 124                 rss_table_size = BNXT_RSS_TBL_SIZE_P5 *
 125                                  2 * sizeof(*vnic->rss_table);
 126         else
 127                 rss_table_size = HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 128
 129         entry_length = RTE_CACHE_LINE_ROUNDUP(entry_length + rss_table_size);
 130
 131         for (i = 0; i < bp->max_vnics; i++) {
 132                 vnic = &bp->vnic_info[i];
 133
 134                 snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 135                          "bnxt_" PCI_PRI_FMT "_vnicattr_%d", pdev->addr.domain,
 136                          pdev->addr.bus, pdev->addr.devid, pdev->addr.function, i);
 137                 mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 138                 mz = rte_memzone_lookup(mz_name);
 139                 if (mz == NULL) {
 140                         mz = rte_memzone_reserve(mz_name,
 141                                                  entry_length,
 142                                                  bp->eth_dev->device->numa_node,
 143                                                  RTE_MEMZONE_2MB |
 144                                                  RTE_MEMZONE_SIZE_HINT_ONLY |
 145                                                  RTE_MEMZONE_IOVA_CONTIG);
 146                         if (mz == NULL) {
 147                                 PMD_DRV_LOG(ERR, "Cannot allocate bnxt vnic_attributes memory\n");
 148                                 return -ENOMEM;
 149                         }
 150                 }
 151                 vnic->rss_mz = mz;
 152                 mz_phys_addr = mz->iova;
 153
 154                 /* Allocate rss table and hash key */
 155                 vnic->rss_table = (void *)((char *)mz->addr);
 156                 vnic->rss_table_dma_addr = mz_phys_addr;
 157                 memset(vnic->rss_table, -1, entry_length);
 158
 159                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table + rss_table_size);
 160                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr + rss_table_size;
 161                 if (!reconfig) {
 162                         bnxt_prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
 163                         memcpy(bp->rss_conf.rss_key, vnic->rss_hash_key, HW_HASH_KEY_SIZE);
 164                 } else {
 165                         memcpy(vnic->rss_hash_key, bp->rss_conf.rss_key, HW_HASH_KEY_SIZE);
 166                 }
 167         }
 168
 169         return 0;
 170 }
 171
 172 void bnxt_free_vnic_mem(struct bnxt *bp)
 173 {
 174         struct bnxt_vnic_info *vnic;
 175         uint16_t max_vnics, i;
 176
 177         if (bp->vnic_info == NULL)
 178                 return;
 179
 180         max_vnics = bp->max_vnics;
 181         for (i = 0; i < max_vnics; i++) {
 182                 vnic = &bp->vnic_info[i];
 183                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 184                         PMD_DRV_LOG(ERR, "VNIC is not freed yet!\n");
 185                         /* TODO Call HWRM to free VNIC */
 186                 }
 187         }
 188
 189         rte_free(bp->vnic_info);
 190         bp->vnic_info = NULL;
 191 }
 192
 193 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 194 {
 195         struct bnxt_vnic_info *vnic_mem;
 196         uint16_t max_vnics;
 197
 198         max_vnics = bp->max_vnics;
 199         /* Allocate memory for VNIC pool and filter pool */
 200         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 201                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 202         if (vnic_mem == NULL) {
 203                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d VNICs",
 204                         max_vnics);
 205                 return -ENOMEM;
 206         }
 207         bp->vnic_info = vnic_mem;
 208         bnxt_init_vnics(bp);
 209         return 0;
 210 }
 211
 212 int bnxt_vnic_grp_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 213 {
 214         uint32_t size = sizeof(*vnic->fw_grp_ids) * bp->max_ring_grps;
 215
 216         vnic->fw_grp_ids = rte_zmalloc("vnic_fw_grp_ids", size, 0);
 217         if (!vnic->fw_grp_ids) {
 218                 PMD_DRV_LOG(ERR,
 219                             "Failed to alloc %d bytes for group ids\n",
 220                             size);
 221                 return -ENOMEM;
 222         }
 223         memset(vnic->fw_grp_ids, -1, size);
 224
 225         return 0;
 226 }
 227
 228 uint16_t bnxt_rte_to_hwrm_hash_types(uint64_t rte_type)
 229 {
 230         uint16_t hwrm_type = 0;
 231
 232         if (rte_type & RTE_ETH_RSS_IPV4)
 233                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV4;
 234         if (rte_type & RTE_ETH_RSS_NONFRAG_IPV4_TCP)
 235                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV4;
 236         if (rte_type & RTE_ETH_RSS_NONFRAG_IPV4_UDP)
 237                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV4;
 238         if (rte_type & RTE_ETH_RSS_IPV6)
 239                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV6;
 240         if (rte_type & RTE_ETH_RSS_NONFRAG_IPV6_TCP)
 241                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV6;
 242         if (rte_type & RTE_ETH_RSS_NONFRAG_IPV6_UDP)
 243                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV6;
 244
 245         return hwrm_type;
 246 }
 247
 248 int bnxt_rte_to_hwrm_hash_level(struct bnxt *bp, uint64_t hash_f, uint32_t lvl)
 249 {
 250         uint32_t mode = HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_DEFAULT;
 251         bool l3 = (hash_f & (RTE_ETH_RSS_IPV4 | RTE_ETH_RSS_IPV6));
 252         bool l4 = (hash_f & (RTE_ETH_RSS_NONFRAG_IPV4_UDP |
 253                              RTE_ETH_RSS_NONFRAG_IPV6_UDP |
 254                              RTE_ETH_RSS_NONFRAG_IPV4_TCP |
 255                              RTE_ETH_RSS_NONFRAG_IPV6_TCP));
 256         bool l3_only = l3 && !l4;
 257         bool l3_and_l4 = l3 && l4;
 258
 259         /* If FW has not advertised capability to configure outer/inner
 260          * RSS hashing , just log a message. HW will work in default RSS mode.
 261          */
 262         if (!(bp->vnic_cap_flags & BNXT_VNIC_CAP_OUTER_RSS)) {
 263                 PMD_DRV_LOG(ERR, "RSS hash level cannot be configured\n");
 264                 return mode;
 265         }
 266
 267         switch (lvl) {
 268         case BNXT_RSS_LEVEL_INNERMOST:
 269                 if (l3_and_l4 || l4)
 270                         mode =
 271                         HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_4;
 272                 else if (l3_only)
 273                         mode =
 274                         HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_2;
 275                 break;
 276         case BNXT_RSS_LEVEL_OUTERMOST:
 277                 if (l3_and_l4 || l4)
 278                         mode =
 279                         HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_4;
 280                 else if (l3_only)
 281                         mode =
 282                         HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_2;
 283                 break;
 284         default:
 285                 mode = HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_DEFAULT;
 286                 break;
 287         }
 288
 289         return mode;
 290 }
 291
 292 uint64_t bnxt_hwrm_to_rte_rss_level(struct bnxt *bp, uint32_t mode)
 293 {
 294         uint64_t rss_level = 0;
 295
 296         /* If FW has not advertised capability to configure inner/outer RSS
 297          * return default hash mode.
 298          */
 299         if (!(bp->vnic_cap_flags & BNXT_VNIC_CAP_OUTER_RSS))
 300                 return RTE_ETH_RSS_LEVEL_PMD_DEFAULT;
 301
 302         if (mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_2 ||
 303             mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_OUTERMOST_4)
 304                 rss_level |= RTE_ETH_RSS_LEVEL_OUTERMOST;
 305         else if (mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_2 ||
 306                  mode == HWRM_VNIC_RSS_CFG_INPUT_HASH_MODE_FLAGS_INNERMOST_4)
 307                 rss_level |= RTE_ETH_RSS_LEVEL_INNERMOST;
 308         else
 309                 rss_level |= RTE_ETH_RSS_LEVEL_PMD_DEFAULT;
 310
 311         return rss_level;
 312 }