drivers/net/bnxt/bnxt_filter.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) Broadcom Limited.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Broadcom Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/queue.h>
  35
  36 #include <rte_log.h>
  37 #include <rte_malloc.h>
  38
  39 #include "bnxt.h"
  40 #include "bnxt_filter.h"
  41 #include "bnxt_hwrm.h"
  42 #include "bnxt_vnic.h"
  43 #include "hsi_struct_def_dpdk.h"
  44
  45 /*
  46  * Filter Functions
  47  */
  48
  49 struct bnxt_filter_info *bnxt_alloc_filter(struct bnxt *bp)
  50 {
  51         struct bnxt_filter_info *filter;
  52
  53         /* Find the 1st unused filter from the free_filter_list pool*/
  54         filter = STAILQ_FIRST(&bp->free_filter_list);
  55         if (!filter) {
  56                 RTE_LOG(ERR, PMD, "No more free filter resources\n");
  57                 return NULL;
  58         }
  59         STAILQ_REMOVE_HEAD(&bp->free_filter_list, next);
  60
  61         /* Default to L2 MAC Addr filter */
  62         filter->flags = HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_PATH_RX;
  63         filter->enables = HWRM_CFA_L2_FILTER_ALLOC_INPUT_ENABLES_L2_ADDR |
  64                         HWRM_CFA_L2_FILTER_ALLOC_INPUT_ENABLES_L2_ADDR_MASK;
  65         memcpy(filter->l2_addr, bp->eth_dev->data->mac_addrs->addr_bytes,
  66                ETHER_ADDR_LEN);
  67         memset(filter->l2_addr_mask, 0xff, ETHER_ADDR_LEN);
  68         return filter;
  69 }
  70
  71 void bnxt_init_filters(struct bnxt *bp)
  72 {
  73         struct bnxt_filter_info *filter;
  74         int i, max_filters;
  75
  76         if (BNXT_PF(bp)) {
  77                 struct bnxt_pf_info *pf = &bp->pf;
  78
  79                 max_filters = pf->max_l2_ctx;
  80         } else {
  81                 struct bnxt_vf_info *vf = &bp->vf;
  82
  83                 max_filters = vf->max_l2_ctx;
  84         }
  85         STAILQ_INIT(&bp->free_filter_list);
  86         for (i = 0; i < max_filters; i++) {
  87                 filter = &bp->filter_info[i];
  88                 filter->fw_l2_filter_id = -1;
  89                 STAILQ_INSERT_TAIL(&bp->free_filter_list, filter, next);
  90         }
  91 }
  92
  93 void bnxt_free_all_filters(struct bnxt *bp)
  94 {
  95         struct bnxt_vnic_info *vnic;
  96         struct bnxt_filter_info *filter, *temp_filter;
  97         int i;
  98
  99         for (i = 0; i < MAX_FF_POOLS; i++) {
 100                 STAILQ_FOREACH(vnic, &bp->ff_pool[i], next) {
 101                         filter = STAILQ_FIRST(&vnic->filter);
 102                         while (filter) {
 103                                 temp_filter = STAILQ_NEXT(filter, next);
 104                                 STAILQ_REMOVE(&vnic->filter, filter,
 105                                               bnxt_filter_info, next);
 106                                 STAILQ_INSERT_TAIL(&bp->free_filter_list,
 107                                                    filter, next);
 108                                 filter = temp_filter;
 109                         }
 110                         STAILQ_INIT(&vnic->filter);
 111                 }
 112         }
 113 }
 114
 115 void bnxt_free_filter_mem(struct bnxt *bp)
 116 {
 117         struct bnxt_filter_info *filter;
 118         uint16_t max_filters, i;
 119         int rc = 0;
 120
 121         if (bp->filter_info == NULL)
 122                 return;
 123
 124         /* Ensure that all filters are freed */
 125         if (BNXT_PF(bp)) {
 126                 struct bnxt_pf_info *pf = &bp->pf;
 127
 128                 max_filters = pf->max_l2_ctx;
 129         } else {
 130                 struct bnxt_vf_info *vf = &bp->vf;
 131
 132                 max_filters = vf->max_l2_ctx;
 133         }
 134         for (i = 0; i < max_filters; i++) {
 135                 filter = &bp->filter_info[i];
 136                 if (filter->fw_l2_filter_id != ((uint64_t)-1)) {
 137                         RTE_LOG(ERR, PMD, "HWRM filter is not freed??\n");
 138                         /* Call HWRM to try to free filter again */
 139                         rc = bnxt_hwrm_clear_filter(bp, filter);
 140                         if (rc)
 141                                 RTE_LOG(ERR, PMD,
 142                                        "HWRM filter cannot be freed rc = %d\n",
 143                                         rc);
 144                 }
 145                 filter->fw_l2_filter_id = -1;
 146         }
 147         STAILQ_INIT(&bp->free_filter_list);
 148
 149         rte_free(bp->filter_info);
 150         bp->filter_info = NULL;
 151 }
 152
 153 int bnxt_alloc_filter_mem(struct bnxt *bp)
 154 {
 155         struct bnxt_filter_info *filter_mem;
 156         uint16_t max_filters;
 157
 158         if (BNXT_PF(bp)) {
 159                 struct bnxt_pf_info *pf = &bp->pf;
 160
 161                 max_filters = pf->max_l2_ctx;
 162         } else {
 163                 struct bnxt_vf_info *vf = &bp->vf;
 164
 165                 max_filters = vf->max_l2_ctx;
 166         }
 167         /* Allocate memory for VNIC pool and filter pool */
 168         filter_mem = rte_zmalloc("bnxt_filter_info",
 169                                  max_filters * sizeof(struct bnxt_filter_info),
 170                                  0);
 171         if (filter_mem == NULL) {
 172                 RTE_LOG(ERR, PMD, "Failed to alloc memory for %d filters",
 173                         max_filters);
 174                 return -ENOMEM;
 175         }
 176         bp->filter_info = filter_mem;
 177         return 0;
 178 }