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