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
  55                 STAILQ_INIT(&vnic->filter);
  56                 STAILQ_INIT(&vnic->flow_list);
  57                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, vnic, next);
  58         }
  59 }
  60
  61 struct bnxt_vnic_info *bnxt_alloc_vnic(struct bnxt *bp)
  62 {
  63         struct bnxt_vnic_info *vnic;
  64
  65         /* Find the 1st unused vnic from the free_vnic_list pool*/
  66         vnic = STAILQ_FIRST(&bp->free_vnic_list);
  67         if (!vnic) {
  68                 PMD_DRV_LOG(ERR, "No more free VNIC resources\n");
  69                 return NULL;
  70         }
  71         STAILQ_REMOVE_HEAD(&bp->free_vnic_list, next);
  72         return vnic;
  73 }
  74
  75 void bnxt_free_all_vnics(struct bnxt *bp)
  76 {
  77         struct bnxt_vnic_info *temp;
  78         unsigned int i;
  79
  80         for (i = 0; i < bp->nr_vnics; i++) {
  81                 temp = &bp->vnic_info[i];
  82                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
  83         }
  84 }
  85
  86 void bnxt_free_vnic_attributes(struct bnxt *bp)
  87 {
  88         struct bnxt_vnic_info *vnic;
  89         unsigned int i;
  90
  91         if (bp->vnic_info == NULL)
  92                 return;
  93
  94         for (i = 0; i < bp->max_vnics; i++) {
  95                 vnic = &bp->vnic_info[i];
  96                 if (vnic->rss_table) {
  97                         /* 'Unreserve' the rss_table */
  98                         /* N/A */
  99
 100                         vnic->rss_table = NULL;
 101                 }
 102
 103                 if (vnic->rss_hash_key) {
 104                         /* 'Unreserve' the rss_hash_key */
 105                         /* N/A */
 106
 107                         vnic->rss_hash_key = NULL;
 108                 }
 109         }
 110 }
 111
 112 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 113 {
 114         struct bnxt_vnic_info *vnic;
 115         struct rte_pci_device *pdev = bp->pdev;
 116         const struct rte_memzone *mz;
 117         char mz_name[RTE_MEMZONE_NAMESIZE];
 118         uint32_t entry_length;
 119         size_t rss_table_size;
 120         uint16_t max_vnics;
 121         int i;
 122         rte_iova_t mz_phys_addr;
 123
 124         entry_length = HW_HASH_KEY_SIZE +
 125                        BNXT_MAX_MC_ADDRS * RTE_ETHER_ADDR_LEN;
 126
 127         if (BNXT_CHIP_THOR(bp))
 128                 rss_table_size = BNXT_RSS_TBL_SIZE_THOR *
 129                                  2 * sizeof(*vnic->rss_table);
 130         else
 131                 rss_table_size = HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 132
 133         entry_length = RTE_CACHE_LINE_ROUNDUP(entry_length + rss_table_size);
 134
 135         max_vnics = bp->max_vnics;
 136         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 137                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 138                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 139         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 140         mz = rte_memzone_lookup(mz_name);
 141         if (!mz) {
 142                 mz = rte_memzone_reserve(mz_name,
 143                                 entry_length * max_vnics, SOCKET_ID_ANY,
 144                                 RTE_MEMZONE_2MB |
 145                                 RTE_MEMZONE_SIZE_HINT_ONLY |
 146                                 RTE_MEMZONE_IOVA_CONTIG);
 147                 if (!mz)
 148                         return -ENOMEM;
 149         }
 150         mz_phys_addr = mz->iova;
 151         if ((unsigned long)mz->addr == mz_phys_addr) {
 152                 PMD_DRV_LOG(DEBUG,
 153                             "Memzone physical address same as virtual.\n");
 154                 PMD_DRV_LOG(DEBUG, "Using rte_mem_virt2iova()\n");
 155                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
 156                 if (mz_phys_addr == RTE_BAD_IOVA) {
 157                         PMD_DRV_LOG(ERR,
 158                                     "unable to map to physical memory\n");
 159                         return -ENOMEM;
 160                 }
 161         }
 162
 163         for (i = 0; i < max_vnics; i++) {
 164                 vnic = &bp->vnic_info[i];
 165
 166                 /* Allocate rss table and hash key */
 167                 vnic->rss_table =
 168                         (void *)((char *)mz->addr + (entry_length * i));
 169                 memset(vnic->rss_table, -1, entry_length);
 170
 171                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
 172                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 173                                               rss_table_size);
 174
 175                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 176                                               rss_table_size;
 177                 vnic->mc_list = (void *)((char *)vnic->rss_hash_key +
 178                                 HW_HASH_KEY_SIZE);
 179                 vnic->mc_list_dma_addr = vnic->rss_hash_key_dma_addr +
 180                                 HW_HASH_KEY_SIZE;
 181                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
 182         }
 183
 184         return 0;
 185 }
 186
 187 void bnxt_free_vnic_mem(struct bnxt *bp)
 188 {
 189         struct bnxt_vnic_info *vnic;
 190         uint16_t max_vnics, i;
 191
 192         if (bp->vnic_info == NULL)
 193                 return;
 194
 195         max_vnics = bp->max_vnics;
 196         for (i = 0; i < max_vnics; i++) {
 197                 vnic = &bp->vnic_info[i];
 198                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 199                         PMD_DRV_LOG(ERR, "VNIC is not freed yet!\n");
 200                         /* TODO Call HWRM to free VNIC */
 201                 }
 202         }
 203
 204         rte_free(bp->vnic_info);
 205         bp->vnic_info = NULL;
 206 }
 207
 208 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 209 {
 210         struct bnxt_vnic_info *vnic_mem;
 211         uint16_t max_vnics;
 212
 213         max_vnics = bp->max_vnics;
 214         /* Allocate memory for VNIC pool and filter pool */
 215         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 216                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 217         if (vnic_mem == NULL) {
 218                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d VNICs",
 219                         max_vnics);
 220                 return -ENOMEM;
 221         }
 222         bp->vnic_info = vnic_mem;
 223         bnxt_init_vnics(bp);
 224         return 0;
 225 }
 226
 227 int bnxt_vnic_grp_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 228 {
 229         uint32_t size = sizeof(*vnic->fw_grp_ids) * bp->max_ring_grps;
 230
 231         vnic->fw_grp_ids = rte_zmalloc("vnic_fw_grp_ids", size, 0);
 232         if (!vnic->fw_grp_ids) {
 233                 PMD_DRV_LOG(ERR,
 234                             "Failed to alloc %d bytes for group ids\n",
 235                             size);
 236                 return -ENOMEM;
 237         }
 238         memset(vnic->fw_grp_ids, -1, size);
 239
 240         return 0;
 241 }
 242
 243 uint16_t bnxt_rte_to_hwrm_hash_types(uint64_t rte_type)
 244 {
 245         uint16_t hwrm_type = 0;
 246
 247         if (rte_type & ETH_RSS_IPV4)
 248                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV4;
 249         if (rte_type & ETH_RSS_NONFRAG_IPV4_TCP)
 250                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV4;
 251         if (rte_type & ETH_RSS_NONFRAG_IPV4_UDP)
 252                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV4;
 253         if (rte_type & ETH_RSS_IPV6)
 254                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV6;
 255         if (rte_type & ETH_RSS_NONFRAG_IPV6_TCP)
 256                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV6;
 257         if (rte_type & ETH_RSS_NONFRAG_IPV6_UDP)
 258                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV6;
 259
 260         return hwrm_type;
 261 }