drivers/net/bnxt/bnxt_vnic.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 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 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         for (i = 0; i < bp->max_vnics; i++) {
  82                 vnic = &bp->vnic_info[i];
  83                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  84                 vnic->rx_queue_cnt = 0;
  85         }
  86 }
  87
  88 void bnxt_free_vnic_attributes(struct bnxt *bp)
  89 {
  90         struct bnxt_vnic_info *vnic;
  91         unsigned int i;
  92
  93         if (bp->vnic_info == NULL)
  94                 return;
  95
  96         for (i = 0; i < bp->max_vnics; i++) {
  97                 vnic = &bp->vnic_info[i];
  98                 if (vnic->rss_table) {
  99                         /* 'Unreserve' the rss_table */
 100                         /* N/A */
 101
 102                         vnic->rss_table = NULL;
 103                 }
 104
 105                 if (vnic->rss_hash_key) {
 106                         /* 'Unreserve' the rss_hash_key */
 107                         /* N/A */
 108
 109                         vnic->rss_hash_key = NULL;
 110                 }
 111         }
 112 }
 113
 114 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 115 {
 116         struct bnxt_vnic_info *vnic;
 117         struct rte_pci_device *pdev = bp->pdev;
 118         const struct rte_memzone *mz;
 119         char mz_name[RTE_MEMZONE_NAMESIZE];
 120         uint32_t entry_length;
 121         size_t rss_table_size;
 122         uint16_t max_vnics;
 123         int i;
 124         rte_iova_t mz_phys_addr;
 125
 126         entry_length = HW_HASH_KEY_SIZE +
 127                        BNXT_MAX_MC_ADDRS * RTE_ETHER_ADDR_LEN;
 128
 129         if (BNXT_CHIP_THOR(bp))
 130                 rss_table_size = BNXT_RSS_TBL_SIZE_THOR *
 131                                  2 * sizeof(*vnic->rss_table);
 132         else
 133                 rss_table_size = HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 134
 135         entry_length = RTE_CACHE_LINE_ROUNDUP(entry_length + rss_table_size);
 136
 137         max_vnics = bp->max_vnics;
 138         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 139                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 140                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 141         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 142         mz = rte_memzone_lookup(mz_name);
 143         if (!mz) {
 144                 mz = rte_memzone_reserve(mz_name,
 145                                 entry_length * max_vnics, SOCKET_ID_ANY,
 146                                 RTE_MEMZONE_2MB |
 147                                 RTE_MEMZONE_SIZE_HINT_ONLY |
 148                                 RTE_MEMZONE_IOVA_CONTIG);
 149                 if (!mz)
 150                         return -ENOMEM;
 151         }
 152         mz_phys_addr = mz->iova;
 153         if ((unsigned long)mz->addr == mz_phys_addr) {
 154                 PMD_DRV_LOG(DEBUG,
 155                             "Memzone physical address same as virtual.\n");
 156                 PMD_DRV_LOG(DEBUG, "Using rte_mem_virt2iova()\n");
 157                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
 158                 if (mz_phys_addr == RTE_BAD_IOVA) {
 159                         PMD_DRV_LOG(ERR,
 160                                     "unable to map to physical memory\n");
 161                         return -ENOMEM;
 162                 }
 163         }
 164
 165         for (i = 0; i < max_vnics; i++) {
 166                 vnic = &bp->vnic_info[i];
 167
 168                 /* Allocate rss table and hash key */
 169                 vnic->rss_table =
 170                         (void *)((char *)mz->addr + (entry_length * i));
 171                 memset(vnic->rss_table, -1, entry_length);
 172
 173                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
 174                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 175                                               rss_table_size);
 176
 177                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 178                                               rss_table_size;
 179                 vnic->mc_list = (void *)((char *)vnic->rss_hash_key +
 180                                 HW_HASH_KEY_SIZE);
 181                 vnic->mc_list_dma_addr = vnic->rss_hash_key_dma_addr +
 182                                 HW_HASH_KEY_SIZE;
 183                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
 184         }
 185
 186         return 0;
 187 }
 188
 189 void bnxt_free_vnic_mem(struct bnxt *bp)
 190 {
 191         struct bnxt_vnic_info *vnic;
 192         uint16_t max_vnics, i;
 193
 194         if (bp->vnic_info == NULL)
 195                 return;
 196
 197         max_vnics = bp->max_vnics;
 198         for (i = 0; i < max_vnics; i++) {
 199                 vnic = &bp->vnic_info[i];
 200                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 201                         PMD_DRV_LOG(ERR, "VNIC is not freed yet!\n");
 202                         /* TODO Call HWRM to free VNIC */
 203                 }
 204         }
 205
 206         rte_free(bp->vnic_info);
 207         bp->vnic_info = NULL;
 208 }
 209
 210 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 211 {
 212         struct bnxt_vnic_info *vnic_mem;
 213         uint16_t max_vnics;
 214
 215         max_vnics = bp->max_vnics;
 216         /* Allocate memory for VNIC pool and filter pool */
 217         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 218                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 219         if (vnic_mem == NULL) {
 220                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d VNICs",
 221                         max_vnics);
 222                 return -ENOMEM;
 223         }
 224         bp->vnic_info = vnic_mem;
 225         bnxt_init_vnics(bp);
 226         return 0;
 227 }
 228
 229 int bnxt_vnic_grp_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 230 {
 231         uint32_t size = sizeof(*vnic->fw_grp_ids) * bp->max_ring_grps;
 232
 233         vnic->fw_grp_ids = rte_zmalloc("vnic_fw_grp_ids", size, 0);
 234         if (!vnic->fw_grp_ids) {
 235                 PMD_DRV_LOG(ERR,
 236                             "Failed to alloc %d bytes for group ids\n",
 237                             size);
 238                 return -ENOMEM;
 239         }
 240         memset(vnic->fw_grp_ids, -1, size);
 241
 242         return 0;
 243 }
 244
 245 uint16_t bnxt_rte_to_hwrm_hash_types(uint64_t rte_type)
 246 {
 247         uint16_t hwrm_type = 0;
 248
 249         if (rte_type & ETH_RSS_IPV4)
 250                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV4;
 251         if (rte_type & ETH_RSS_NONFRAG_IPV4_TCP)
 252                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV4;
 253         if (rte_type & ETH_RSS_NONFRAG_IPV4_UDP)
 254                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV4;
 255         if (rte_type & ETH_RSS_IPV6)
 256                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV6;
 257         if (rte_type & ETH_RSS_NONFRAG_IPV6_TCP)
 258                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV6;
 259         if (rte_type & ETH_RSS_NONFRAG_IPV6_UDP)
 260                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV6;
 261
 262         return hwrm_type;
 263 }