drivers/net/bnxt/bnxt_filter.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 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->nr_vnics; i++) {
  85                 vnic = &bp->vnic_info[i];
  86                 filter = STAILQ_FIRST(&vnic->filter);
  87                 while (filter) {
  88                         temp_filter = STAILQ_NEXT(filter, next);
  89                         STAILQ_REMOVE(&vnic->filter, filter,
  90                                         bnxt_filter_info, next);
  91                         STAILQ_INSERT_TAIL(&bp->free_filter_list,
  92                                         filter, next);
  93                         filter = temp_filter;
  94                 }
  95                 STAILQ_INIT(&vnic->filter);
  96         }
  97
  98         for (i = 0; i < bp->pf.max_vfs; i++) {
  99                 STAILQ_FOREACH(filter, &bp->pf.vf_info[i].filter, next) {
 100                         bnxt_hwrm_clear_l2_filter(bp, filter);
 101                 }
 102         }
 103 }
 104
 105 void bnxt_free_filter_mem(struct bnxt *bp)
 106 {
 107         struct bnxt_filter_info *filter;
 108         uint16_t max_filters, i;
 109         int rc = 0;
 110
 111         if (bp->filter_info == NULL)
 112                 return;
 113
 114         /* Ensure that all filters are freed */
 115         max_filters = bp->max_l2_ctx;
 116         for (i = 0; i < max_filters; i++) {
 117                 filter = &bp->filter_info[i];
 118                 if (filter->fw_ntuple_filter_id != ((uint64_t)-1) &&
 119                     filter->filter_type == HWRM_CFA_NTUPLE_FILTER) {
 120                         /* Call HWRM to try to free filter again */
 121                         rc = bnxt_hwrm_clear_ntuple_filter(bp, filter);
 122                         if (rc)
 123                                 PMD_DRV_LOG(ERR,
 124                                             "Cannot free ntuple filter: %d\n",
 125                                             rc);
 126                 }
 127                 filter->fw_ntuple_filter_id = UINT64_MAX;
 128
 129                 if (filter->fw_l2_filter_id != ((uint64_t)-1) &&
 130                     filter->filter_type == HWRM_CFA_L2_FILTER) {
 131                         PMD_DRV_LOG(DEBUG, "L2 filter is not free\n");
 132                         /* Call HWRM to try to free filter again */
 133                         rc = bnxt_hwrm_clear_l2_filter(bp, filter);
 134                         if (rc)
 135                                 PMD_DRV_LOG(ERR,
 136                                             "Cannot free L2 filter: %d\n",
 137                                             rc);
 138                 }
 139                 filter->fw_l2_filter_id = UINT64_MAX;
 140
 141         }
 142         STAILQ_INIT(&bp->free_filter_list);
 143
 144         rte_free(bp->filter_info);
 145         bp->filter_info = NULL;
 146
 147         for (i = 0; i < bp->pf.max_vfs; i++) {
 148                 STAILQ_FOREACH(filter, &bp->pf.vf_info[i].filter, next) {
 149                         rte_free(filter);
 150                         STAILQ_REMOVE(&bp->pf.vf_info[i].filter, filter,
 151                                       bnxt_filter_info, next);
 152                 }
 153         }
 154 }
 155
 156 int bnxt_alloc_filter_mem(struct bnxt *bp)
 157 {
 158         struct bnxt_filter_info *filter_mem;
 159         uint16_t max_filters;
 160
 161         max_filters = bp->max_l2_ctx;
 162         /* Allocate memory for VNIC pool and filter pool */
 163         filter_mem = rte_zmalloc("bnxt_filter_info",
 164                                  max_filters * sizeof(struct bnxt_filter_info),
 165                                  0);
 166         if (filter_mem == NULL) {
 167                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d filters",
 168                         max_filters);
 169                 return -ENOMEM;
 170         }
 171         bp->filter_info = filter_mem;
 172         bnxt_init_filters(bp);
 173         return 0;
 174 }
 175
 176 struct bnxt_filter_info *bnxt_get_unused_filter(struct bnxt *bp)
 177 {
 178         struct bnxt_filter_info *filter;
 179
 180         /* Find the 1st unused filter from the free_filter_list pool*/
 181         filter = STAILQ_FIRST(&bp->free_filter_list);
 182         if (!filter) {
 183                 PMD_DRV_LOG(ERR, "No more free filter resources\n");
 184                 return NULL;
 185         }
 186         STAILQ_REMOVE_HEAD(&bp->free_filter_list, next);
 187
 188         return filter;
 189 }
 190
 191 void bnxt_free_filter(struct bnxt *bp, struct bnxt_filter_info *filter)
 192 {
 193         memset(filter, 0, sizeof(*filter));
 194         filter->mac_index = INVALID_MAC_INDEX;
 195         filter->fw_l2_filter_id = UINT64_MAX;
 196         filter->fw_ntuple_filter_id = UINT64_MAX;
 197         filter->fw_em_filter_id = UINT64_MAX;
 198         STAILQ_INSERT_TAIL(&bp->free_filter_list, filter, next);
 199 }