1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  24  * Copyright 2012 David Hoeppner.  All rights reserved.
  25  */
  26 
  27 /*
  28  * Functions related to XXX.
  29  */
  30 
  31 #include <sys/types.h>
  32 #include <inet/common.h>
  33 
  34 #include "dccp_impl.h"
  35 
  36 /*
  37  * When a CPU is added, we need to allocate the per CPU stats struct.
  38  */
  39 void
  40 dccp_stack_cpu_add(dccp_stack_t *dccps, processorid_t cpu_seqid)
  41 {
  42         int     i;
  43 
  44         if (cpu_seqid < dccps->dccps_sc_cnt) {
  45                 return;
  46         }
  47 
  48         for (i = dccps->dccps_sc_cnt; i <= cpu_seqid; i++) {
  49                 ASSERT(dccps->dccps_sc[i] == NULL);
  50                 dccps->dccps_sc[i] = kmem_zalloc(sizeof (dccp_stats_cpu_t),
  51                     KM_SLEEP);
  52         }
  53 
  54         membar_producer();
  55         dccps->dccps_sc_cnt = cpu_seqid + 1;
  56 }