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         /* bump up the reference count of filter */
  43         filter->l2_ref_cnt++;
  44         return filter;
  45 }
  46
  47 struct bnxt_filter_info *bnxt_alloc_vf_filter(struct bnxt *bp, uint16_t vf)
  48 {
  49         struct bnxt_filter_info *filter;
  50
  51         filter = rte_zmalloc("bnxt_vf_filter_info", sizeof(*filter), 0);
  52         if (!filter) {
  53                 PMD_DRV_LOG(ERR, "Failed to alloc memory for VF %hu filters\n",
  54                         vf);
  55                 return NULL;
  56         }
  57
  58         filter->fw_l2_filter_id = UINT64_MAX;
  59         STAILQ_INSERT_TAIL(&bp->pf.vf_info[vf].filter, filter, next);
  60         return filter;
  61 }
  62
  63 static void bnxt_init_filters(struct bnxt *bp)
  64 {
  65         struct bnxt_filter_info *filter;
  66         int i, max_filters;
  67
  68         max_filters = bp->max_l2_ctx;
  69         STAILQ_INIT(&bp->free_filter_list);
  70         for (i = 0; i < max_filters; i++) {
  71                 filter = &bp->filter_info[i];
  72                 filter->fw_l2_filter_id = UINT64_MAX;
  73                 filter->fw_em_filter_id = UINT64_MAX;
  74                 filter->fw_ntuple_filter_id = UINT64_MAX;
  75                 STAILQ_INSERT_TAIL(&bp->free_filter_list, filter, next);
  76         }
  77 }
  78
  79 void bnxt_free_all_filters(struct bnxt *bp)
  80 {
  81         struct bnxt_vnic_info *vnic;
  82         struct bnxt_filter_info *filter, *temp_filter;
  83         unsigned int i;
  84
  85         for (i = 0; i < bp->nr_vnics; i++) {
  86                 vnic = &bp->vnic_info[i];
  87                 filter = STAILQ_FIRST(&vnic->filter);
  88                 while (filter) {
  89                         temp_filter = STAILQ_NEXT(filter, next);
  90                         STAILQ_REMOVE(&vnic->filter, filter,
  91                                         bnxt_filter_info, next);
  92                         STAILQ_INSERT_TAIL(&bp->free_filter_list,
  93                                         filter, next);
  94                         filter = temp_filter;
  95                 }
  96                 STAILQ_INIT(&vnic->filter);
  97         }
  98
  99         for (i = 0; i < bp->pf.max_vfs; i++) {
 100                 STAILQ_FOREACH(filter, &bp->pf.vf_info[i].filter, next) {
 101                         bnxt_hwrm_clear_l2_filter(bp, filter);
 102                 }
 103         }
 104 }
 105
 106 void bnxt_free_filter_mem(struct bnxt *bp)
 107 {
 108         struct bnxt_filter_info *filter;
 109         uint16_t max_filters, i;
 110         int rc = 0;
 111
 112         if (bp->filter_info == NULL)
 113                 return;
 114
 115         /* Ensure that all filters are freed */
 116         max_filters = bp->max_l2_ctx;
 117         for (i = 0; i < max_filters; i++) {
 118                 filter = &bp->filter_info[i];
 119                 if (filter->fw_ntuple_filter_id != ((uint64_t)-1) &&
 120                     filter->filter_type == HWRM_CFA_NTUPLE_FILTER) {
 121                         /* Call HWRM to try to free filter again */
 122                         rc = bnxt_hwrm_clear_ntuple_filter(bp, filter);
 123                         if (rc)
 124                                 PMD_DRV_LOG(ERR,
 125                                             "Cannot free ntuple filter: %d\n",
 126                                             rc);
 127                 }
 128                 filter->fw_ntuple_filter_id = UINT64_MAX;
 129
 130                 if (filter->fw_l2_filter_id != ((uint64_t)-1) &&
 131                     filter->filter_type == HWRM_CFA_L2_FILTER) {
 132                         PMD_DRV_LOG(DEBUG, "L2 filter is not free\n");
 133                         /* Call HWRM to try to free filter again */
 134                         rc = bnxt_hwrm_clear_l2_filter(bp, filter);
 135                         if (rc)
 136                                 PMD_DRV_LOG(ERR,
 137                                             "Cannot free L2 filter: %d\n",
 138                                             rc);
 139                 }
 140                 filter->fw_l2_filter_id = UINT64_MAX;
 141
 142         }
 143         STAILQ_INIT(&bp->free_filter_list);
 144
 145         rte_free(bp->filter_info);
 146         bp->filter_info = NULL;
 147
 148         for (i = 0; i < bp->pf.max_vfs; i++) {
 149                 STAILQ_FOREACH(filter, &bp->pf.vf_info[i].filter, next) {
 150                         rte_free(filter);
 151                         STAILQ_REMOVE(&bp->pf.vf_info[i].filter, filter,
 152                                       bnxt_filter_info, next);
 153                 }
 154         }
 155 }
 156
 157 int bnxt_alloc_filter_mem(struct bnxt *bp)
 158 {
 159         struct bnxt_filter_info *filter_mem;
 160         uint16_t max_filters;
 161
 162         max_filters = bp->max_l2_ctx;
 163         /* Allocate memory for VNIC pool and filter pool */
 164         filter_mem = rte_zmalloc("bnxt_filter_info",
 165                                  max_filters * sizeof(struct bnxt_filter_info),
 166                                  0);
 167         if (filter_mem == NULL) {
 168                 PMD_DRV_LOG(ERR, "Failed to alloc memory for %d filters",
 169                         max_filters);
 170                 return -ENOMEM;
 171         }
 172         bp->filter_info = filter_mem;
 173         bnxt_init_filters(bp);
 174         return 0;
 175 }
 176
 177 struct bnxt_filter_info *bnxt_get_unused_filter(struct bnxt *bp)
 178 {
 179         struct bnxt_filter_info *filter;
 180
 181         /* Find the 1st unused filter from the free_filter_list pool*/
 182         filter = STAILQ_FIRST(&bp->free_filter_list);
 183         if (!filter) {
 184                 PMD_DRV_LOG(ERR, "No more free filter resources\n");
 185                 return NULL;
 186         }
 187         STAILQ_REMOVE_HEAD(&bp->free_filter_list, next);
 188
 189         return filter;
 190 }
 191
 192 void bnxt_free_filter(struct bnxt *bp, struct bnxt_filter_info *filter)
 193 {
 194         memset(filter, 0, sizeof(*filter));
 195         filter->mac_index = INVALID_MAC_INDEX;
 196         filter->fw_l2_filter_id = UINT64_MAX;
 197         filter->fw_ntuple_filter_id = UINT64_MAX;
 198         filter->fw_em_filter_id = UINT64_MAX;
 199         STAILQ_INSERT_TAIL(&bp->free_filter_list, filter, next);
 200 }