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 *temp;
  79         unsigned int i;
  80
  81         for (i = 0; i < bp->nr_vnics; i++) {
  82                 temp = &bp->vnic_info[i];
  83                 STAILQ_INSERT_TAIL(&bp->free_vnic_list, temp, next);
  84         }
  85 }
  86
  87 void bnxt_free_vnic_attributes(struct bnxt *bp)
  88 {
  89         struct bnxt_vnic_info *vnic;
  90         unsigned int i;
  91
  92         if (bp->vnic_info == NULL)
  93                 return;
  94
  95         for (i = 0; i < bp->max_vnics; i++) {
  96                 vnic = &bp->vnic_info[i];
  97                 if (vnic->rss_table) {
  98                         /* 'Unreserve' the rss_table */
  99                         /* N/A */
 100
 101                         vnic->rss_table = NULL;
 102                 }
 103
 104                 if (vnic->rss_hash_key) {
 105                         /* 'Unreserve' the rss_hash_key */
 106                         /* N/A */
 107
 108                         vnic->rss_hash_key = NULL;
 109                 }
 110         }
 111 }
 112
 113 int bnxt_alloc_vnic_attributes(struct bnxt *bp)
 114 {
 115         struct bnxt_vnic_info *vnic;
 116         struct rte_pci_device *pdev = bp->pdev;
 117         const struct rte_memzone *mz;
 118         char mz_name[RTE_MEMZONE_NAMESIZE];
 119         uint32_t entry_length;
 120         size_t rss_table_size;
 121         uint16_t max_vnics;
 122         int i;
 123         rte_iova_t mz_phys_addr;
 124
 125         entry_length = HW_HASH_KEY_SIZE +
 126                        BNXT_MAX_MC_ADDRS * RTE_ETHER_ADDR_LEN;
 127
 128         if (BNXT_CHIP_THOR(bp))
 129                 rss_table_size = BNXT_RSS_TBL_SIZE_THOR *
 130                                  2 * sizeof(*vnic->rss_table);
 131         else
 132                 rss_table_size = HW_HASH_INDEX_SIZE * sizeof(*vnic->rss_table);
 133
 134         entry_length = RTE_CACHE_LINE_ROUNDUP(entry_length + rss_table_size);
 135
 136         max_vnics = bp->max_vnics;
 137         snprintf(mz_name, RTE_MEMZONE_NAMESIZE,
 138                  "bnxt_%04x:%02x:%02x:%02x_vnicattr", pdev->addr.domain,
 139                  pdev->addr.bus, pdev->addr.devid, pdev->addr.function);
 140         mz_name[RTE_MEMZONE_NAMESIZE - 1] = 0;
 141         mz = rte_memzone_lookup(mz_name);
 142         if (!mz) {
 143                 mz = rte_memzone_reserve(mz_name,
 144                                 entry_length * max_vnics, SOCKET_ID_ANY,
 145                                 RTE_MEMZONE_2MB |
 146                                 RTE_MEMZONE_SIZE_HINT_ONLY |
 147                                 RTE_MEMZONE_IOVA_CONTIG);
 148                 if (!mz)
 149                         return -ENOMEM;
 150         }
 151         mz_phys_addr = mz->iova;
 152         if ((unsigned long)mz->addr == mz_phys_addr) {
 153                 PMD_DRV_LOG(DEBUG,
 154                             "Memzone physical address same as virtual.\n");
 155                 PMD_DRV_LOG(DEBUG, "Using rte_mem_virt2iova()\n");
 156                 mz_phys_addr = rte_mem_virt2iova(mz->addr);
 157                 if (mz_phys_addr == RTE_BAD_IOVA) {
 158                         PMD_DRV_LOG(ERR,
 159                                     "unable to map to physical memory\n");
 160                         return -ENOMEM;
 161                 }
 162         }
 163
 164         for (i = 0; i < max_vnics; i++) {
 165                 vnic = &bp->vnic_info[i];
 166
 167                 /* Allocate rss table and hash key */
 168                 vnic->rss_table =
 169                         (void *)((char *)mz->addr + (entry_length * i));
 170                 memset(vnic->rss_table, -1, entry_length);
 171
 172                 vnic->rss_table_dma_addr = mz_phys_addr + (entry_length * i);
 173                 vnic->rss_hash_key = (void *)((char *)vnic->rss_table +
 174                                               rss_table_size);
 175
 176                 vnic->rss_hash_key_dma_addr = vnic->rss_table_dma_addr +
 177                                               rss_table_size;
 178                 vnic->mc_list = (void *)((char *)vnic->rss_hash_key +
 179                                 HW_HASH_KEY_SIZE);
 180                 vnic->mc_list_dma_addr = vnic->rss_hash_key_dma_addr +
 181                                 HW_HASH_KEY_SIZE;
 182                 prandom_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE);
 183         }
 184
 185         return 0;
 186 }
 187
 188 void bnxt_free_vnic_mem(struct bnxt *bp)
 189 {
 190         struct bnxt_vnic_info *vnic;
 191         uint16_t max_vnics, i;
 192
 193         if (bp->vnic_info == NULL)
 194                 return;
 195
 196         max_vnics = bp->max_vnics;
 197         for (i = 0; i < max_vnics; i++) {
 198                 vnic = &bp->vnic_info[i];
 199                 if (vnic->fw_vnic_id != (uint16_t)HWRM_NA_SIGNATURE) {
 200                         PMD_DRV_LOG(ERR, "VNIC is not freed yet!\n");
 201                         /* TODO Call HWRM to free VNIC */
 202                 }
 203         }
 204
 205         rte_free(bp->vnic_info);
 206         bp->vnic_info = NULL;
 207 }
 208
 209 int bnxt_alloc_vnic_mem(struct bnxt *bp)
 210 {
 211         struct bnxt_vnic_info *vnic_mem;
 212         uint16_t max_vnics;
 213
 214         max_vnics = bp->max_vnics;
 215         /* Allocate memory for VNIC pool and filter pool */
 216         vnic_mem = rte_zmalloc("bnxt_vnic_info",
 217                                max_vnics * sizeof(struct bnxt_vnic_info), 0);
 218         if (vnic_mem == NULL) {
 219                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d VNICs",
 220                         max_vnics);
 221                 return -ENOMEM;
 222         }
 223         bp->vnic_info = vnic_mem;
 224         bnxt_init_vnics(bp);
 225         return 0;
 226 }
 227
 228 int bnxt_vnic_grp_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic)
 229 {
 230         uint32_t size = sizeof(*vnic->fw_grp_ids) * bp->max_ring_grps;
 231
 232         vnic->fw_grp_ids = rte_zmalloc("vnic_fw_grp_ids", size, 0);
 233         if (!vnic->fw_grp_ids) {
 234                 PMD_DRV_LOG(ERR,
 235                             "Failed to alloc %d bytes for group ids\n",
 236                             size);
 237                 return -ENOMEM;
 238         }
 239         memset(vnic->fw_grp_ids, -1, size);
 240
 241         return 0;
 242 }
 243
 244 uint16_t bnxt_rte_to_hwrm_hash_types(uint64_t rte_type)
 245 {
 246         uint16_t hwrm_type = 0;
 247
 248         if (rte_type & ETH_RSS_IPV4)
 249                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV4;
 250         if (rte_type & ETH_RSS_NONFRAG_IPV4_TCP)
 251                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV4;
 252         if (rte_type & ETH_RSS_NONFRAG_IPV4_UDP)
 253                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV4;
 254         if (rte_type & ETH_RSS_IPV6)
 255                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV6;
 256         if (rte_type & ETH_RSS_NONFRAG_IPV6_TCP)
 257                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV6;
 258         if (rte_type & ETH_RSS_NONFRAG_IPV6_UDP)
 259                 hwrm_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV6;
 260
 261         return hwrm_type;
 262 }