drivers/net/bnxt/bnxt_filter.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2021 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <sys/queue.h>
   7
   8 #include <rte_byteorder.h>
   9 #include <rte_log.h>
  10 #include <rte_malloc.h>
  11 #include <rte_flow.h>
  12 #include <rte_flow_driver.h>
  13 #include <rte_tailq.h>
  14
  15 #include "bnxt.h"
  16 #include "bnxt_filter.h"
  17 #include "bnxt_hwrm.h"
  18 #include "bnxt_vnic.h"
  19 #include "hsi_struct_def_dpdk.h"
  20
  21 /*
  22  * Filter Functions
  23  */
  24
  25 struct bnxt_filter_info *bnxt_alloc_filter(struct bnxt *bp)
  26 {
  27         struct bnxt_filter_info *filter;
  28
  29         filter = bnxt_get_unused_filter(bp);
  30         if (!filter) {
  31                 PMD_DRV_LOG(ERR, "No more free filter resources\n");
  32                 return NULL;
  33         }
  34
  35         filter->mac_index = INVALID_MAC_INDEX;
  36         /* Default to L2 MAC Addr filter */
  37         filter->flags = HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_PATH_RX;
  38         filter->enables = HWRM_CFA_L2_FILTER_ALLOC_INPUT_ENABLES_L2_ADDR |
  39                         HWRM_CFA_L2_FILTER_ALLOC_INPUT_ENABLES_L2_ADDR_MASK;
  40         memcpy(filter->l2_addr, bp->mac_addr, RTE_ETHER_ADDR_LEN);
  41         memset(filter->l2_addr_mask, 0xff, RTE_ETHER_ADDR_LEN);
  42
  43         return filter;
  44 }
  45
  46 struct bnxt_filter_info *bnxt_alloc_vf_filter(struct bnxt *bp, uint16_t vf)
  47 {
  48         struct bnxt_filter_info *filter;
  49
  50         filter = rte_zmalloc("bnxt_vf_filter_info", sizeof(*filter), 0);
  51         if (!filter) {
  52                 PMD_DRV_LOG(ERR, "Failed to alloc memory for VF %hu filters\n",
  53                         vf);
  54                 return NULL;
  55         }
  56
  57         filter->fw_l2_filter_id = UINT64_MAX;
  58         STAILQ_INSERT_TAIL(&bp->pf->vf_info[vf].filter, filter, next);
  59         return filter;
  60 }
  61
  62 static void bnxt_init_filters(struct bnxt *bp)
  63 {
  64         struct bnxt_filter_info *filter;
  65         int i, max_filters;
  66
  67         max_filters = bp->max_l2_ctx;
  68         STAILQ_INIT(&bp->free_filter_list);
  69         for (i = 0; i < max_filters; i++) {
  70                 filter = &bp->filter_info[i];
  71                 filter->fw_l2_filter_id = UINT64_MAX;
  72                 filter->fw_em_filter_id = UINT64_MAX;
  73                 filter->fw_ntuple_filter_id = UINT64_MAX;
  74                 STAILQ_INSERT_TAIL(&bp->free_filter_list, filter, next);
  75         }
  76 }
  77
  78 void bnxt_free_all_filters(struct bnxt *bp)
  79 {
  80         struct bnxt_vnic_info *vnic;
  81         struct bnxt_filter_info *filter, *temp_filter;
  82         unsigned int i;
  83
  84         for (i = 0; i < bp->pf->max_vfs; i++) {
  85                 STAILQ_FOREACH(filter, &bp->pf->vf_info[i].filter, next) {
  86                         bnxt_hwrm_clear_l2_filter(bp, filter);
  87                 }
  88         }
  89
  90         if (bp->vnic_info == NULL)
  91                 return;
  92
  93         for (i = 0; i < bp->nr_vnics; i++) {
  94                 vnic = &bp->vnic_info[i];
  95                 filter = STAILQ_FIRST(&vnic->filter);
  96                 while (filter) {
  97                         temp_filter = STAILQ_NEXT(filter, next);
  98                         STAILQ_REMOVE(&vnic->filter, filter,
  99                                         bnxt_filter_info, next);
 100                         STAILQ_INSERT_TAIL(&bp->free_filter_list,
 101                                         filter, next);
 102                         filter = temp_filter;
 103                 }
 104                 STAILQ_INIT(&vnic->filter);
 105         }
 106
 107 }
 108
 109 void bnxt_free_filter_mem(struct bnxt *bp)
 110 {
 111         struct bnxt_filter_info *filter;
 112         uint16_t max_filters, i;
 113         int rc = 0;
 114
 115         if (bp->filter_info == NULL)
 116                 return;
 117
 118         /* Ensure that all filters are freed */
 119         max_filters = bp->max_l2_ctx;
 120         for (i = 0; i < max_filters; i++) {
 121                 filter = &bp->filter_info[i];
 122                 if (filter->fw_ntuple_filter_id != ((uint64_t)-1) &&
 123                     filter->filter_type == HWRM_CFA_NTUPLE_FILTER) {
 124                         /* Call HWRM to try to free filter again */
 125                         rc = bnxt_hwrm_clear_ntuple_filter(bp, filter);
 126                         if (rc)
 127                                 PMD_DRV_LOG(ERR,
 128                                             "Cannot free ntuple filter: %d\n",
 129                                             rc);
 130                 }
 131                 filter->fw_ntuple_filter_id = UINT64_MAX;
 132
 133                 if (filter->fw_l2_filter_id != ((uint64_t)-1) &&
 134                     filter->filter_type == HWRM_CFA_L2_FILTER) {
 135                         PMD_DRV_LOG(DEBUG, "L2 filter is not free\n");
 136                         /* Call HWRM to try to free filter again */
 137                         rc = bnxt_hwrm_clear_l2_filter(bp, filter);
 138                         if (rc)
 139                                 PMD_DRV_LOG(ERR,
 140                                             "Cannot free L2 filter: %d\n",
 141                                             rc);
 142                 }
 143                 filter->fw_l2_filter_id = UINT64_MAX;
 144
 145         }
 146         STAILQ_INIT(&bp->free_filter_list);
 147
 148         rte_free(bp->filter_info);
 149         bp->filter_info = NULL;
 150
 151         for (i = 0; i < bp->pf->max_vfs; i++) {
 152                 STAILQ_FOREACH(filter, &bp->pf->vf_info[i].filter, next) {
 153                         rte_free(filter);
 154                         STAILQ_REMOVE(&bp->pf->vf_info[i].filter, filter,
 155                                       bnxt_filter_info, next);
 156                 }
 157         }
 158 }
 159
 160 int bnxt_alloc_filter_mem(struct bnxt *bp)
 161 {
 162         struct bnxt_filter_info *filter_mem;
 163         uint16_t max_filters;
 164
 165         max_filters = bp->max_l2_ctx;
 166         /* Allocate memory for VNIC pool and filter pool */
 167         filter_mem = rte_zmalloc("bnxt_filter_info",
 168                                  max_filters * sizeof(struct bnxt_filter_info),
 169                                  0);
 170         if (filter_mem == NULL) {
 171                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d filters",
 172                         max_filters);
 173                 return -ENOMEM;
 174         }
 175         bp->filter_info = filter_mem;
 176         bnxt_init_filters(bp);
 177         return 0;
 178 }
 179
 180 struct bnxt_filter_info *bnxt_get_unused_filter(struct bnxt *bp)
 181 {
 182         struct bnxt_filter_info *filter;
 183
 184         /* Find the 1st unused filter from the free_filter_list pool*/
 185         filter = STAILQ_FIRST(&bp->free_filter_list);
 186         if (!filter) {
 187                 PMD_DRV_LOG(ERR, "No more free filter resources\n");
 188                 return NULL;
 189         }
 190         STAILQ_REMOVE_HEAD(&bp->free_filter_list, next);
 191
 192         return filter;
 193 }
 194
 195 void bnxt_free_filter(struct bnxt *bp, struct bnxt_filter_info *filter)
 196 {
 197         memset(filter, 0, sizeof(*filter));
 198         filter->mac_index = INVALID_MAC_INDEX;
 199         filter->fw_l2_filter_id = UINT64_MAX;
 200         filter->fw_ntuple_filter_id = UINT64_MAX;
 201         filter->fw_em_filter_id = UINT64_MAX;
 202         STAILQ_INSERT_TAIL(&bp->free_filter_list, filter, next);
 203 }