drivers/net/cxgbe/smt.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2020 Chelsio Communications.
   3  * All rights reserved.
   4  */
   5
   6 #include "base/common.h"
   7 #include "smt.h"
   8
   9 /**
  10  * Initialize Source MAC Table
  11  */
  12 struct smt_data *t4_init_smt(u32 smt_start_idx, u32 smt_size)
  13 {
  14         struct smt_data *s;
  15         u32 i;
  16
  17         s = t4_alloc_mem(sizeof(*s) + smt_size * sizeof(struct smt_entry));
  18         if (!s)
  19                 return NULL;
  20
  21         s->smt_start = smt_start_idx;
  22         s->smt_size = smt_size;
  23         t4_os_rwlock_init(&s->lock);
  24
  25         for (i = 0; i < s->smt_size; ++i) {
  26                 s->smtab[i].idx = i;
  27                 s->smtab[i].hw_idx = smt_start_idx + i;
  28                 s->smtab[i].state = SMT_STATE_UNUSED;
  29                 memset(&s->smtab[i].src_mac, 0, RTE_ETHER_ADDR_LEN);
  30                 t4_os_lock_init(&s->smtab[i].lock);
  31                 rte_atomic32_set(&s->smtab[i].refcnt, 0);
  32         }
  33         return s;
  34 }
  35
  36 /**
  37  * Cleanup Source MAC Table
  38  */
  39 void t4_cleanup_smt(struct adapter *adap)
  40 {
  41         if (adap->smt)
  42                 t4_os_free(adap->smt);
  43 }