usr/src/uts/common/inet/ipsecesp.h

   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  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  * Copyright (c) 2012 Nexenta Systems, Inc. All rights reserved.
  25  */
  26
  27 #ifndef _INET_IPSECESP_H
  28 #define _INET_IPSECESP_H
  29
  30 #include <inet/ip.h>
  31 #include <inet/ipdrop.h>
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 #ifdef _KERNEL
  38
  39 /* Named Dispatch Parameter Management Structure */
  40 typedef struct ipsecespparam_s {
  41         uint_t  ipsecesp_param_min;
  42         uint_t  ipsecesp_param_max;
  43         uint_t  ipsecesp_param_value;
  44         char    *ipsecesp_param_name;
  45 } ipsecespparam_t;
  46
  47 /*
  48  * Stats.  This may eventually become a full-blown SNMP MIB once that spec
  49  * stabilizes.
  50  */
  51
  52 typedef struct esp_kstats_s {
  53         kstat_named_t esp_stat_num_aalgs;
  54         kstat_named_t esp_stat_good_auth;
  55         kstat_named_t esp_stat_bad_auth;
  56         kstat_named_t esp_stat_bad_padding;
  57         kstat_named_t esp_stat_replay_failures;
  58         kstat_named_t esp_stat_replay_early_failures;
  59         kstat_named_t esp_stat_keysock_in;
  60         kstat_named_t esp_stat_out_requests;
  61         kstat_named_t esp_stat_acquire_requests;
  62         kstat_named_t esp_stat_bytes_expired;
  63         kstat_named_t esp_stat_out_discards;
  64         kstat_named_t esp_stat_crypto_sync;
  65         kstat_named_t esp_stat_crypto_async;
  66         kstat_named_t esp_stat_crypto_failures;
  67         kstat_named_t esp_stat_num_ealgs;
  68         kstat_named_t esp_stat_bad_decrypt;
  69         kstat_named_t esp_stat_sa_port_renumbers;
  70 } esp_kstats_t;
  71
  72 /*
  73  * espstack->esp_kstats is equal to espstack->esp_ksp->ks_data if
  74  * kstat_create_netstack for espstack->esp_ksp succeeds, but when it
  75  * fails, it will be NULL. Note this is done for all stack instances,
  76  * so it *could* fail. hence a non-NULL checking is done for
  77  * ESP_BUMP_STAT and ESP_DEBUMP_STAT
  78  */
  79 #define ESP_BUMP_STAT(espstack, x)                                      \
  80 do {                                                                    \
  81         if (espstack->esp_kstats != NULL)                               \
  82                 (espstack->esp_kstats->esp_stat_ ## x).value.ui64++;    \
  83 _NOTE(CONSTCOND)                                                        \
  84 } while (0)
  85
  86 #define ESP_DEBUMP_STAT(espstack, x)                                    \
  87 do {                                                                    \
  88         if (espstack->esp_kstats != NULL)                               \
  89                 (espstack->esp_kstats->esp_stat_ ## x).value.ui64--;    \
  90 _NOTE(CONSTCOND)                                                        \
  91 } while (0)
  92
  93 /*
  94  * IPSECESP stack instances
  95  */
  96 struct ipsecesp_stack {
  97         netstack_t              *ipsecesp_netstack;     /* Common netstack */
  98
  99         caddr_t                 ipsecesp_g_nd;
 100         struct ipsecespparam_s  *ipsecesp_params;
 101         kmutex_t                ipsecesp_param_lock;    /* Protects params */
 102
 103         /* Packet dropper for ESP drops. */
 104         ipdropper_t             esp_dropper;
 105
 106         kstat_t                 *esp_ksp;
 107         struct esp_kstats_s     *esp_kstats;
 108
 109         /*
 110          * Keysock instance of ESP.  There can be only one per stack instance.
 111          * Use atomic_cas_ptr() on this because I don't set it until
 112          * KEYSOCK_HELLO comes down.
 113          * Paired up with the esp_pfkey_q is the esp_event, which will age SAs.
 114          */
 115         queue_t                 *esp_pfkey_q;
 116         timeout_id_t            esp_event;
 117
 118         sadbp_t                 esp_sadb;
 119 };
 120 typedef struct ipsecesp_stack ipsecesp_stack_t;
 121
 122 #define ipsecesp_debug  ipsecesp_params[0].ipsecesp_param_value
 123 #define ipsecesp_age_interval ipsecesp_params[1].ipsecesp_param_value
 124 #define ipsecesp_age_int_max    ipsecesp_params[1].ipsecesp_param_max
 125 #define ipsecesp_reap_delay     ipsecesp_params[2].ipsecesp_param_value
 126 #define ipsecesp_replay_size    ipsecesp_params[3].ipsecesp_param_value
 127 #define ipsecesp_acquire_timeout        \
 128         ipsecesp_params[4].ipsecesp_param_value
 129 #define ipsecesp_larval_timeout \
 130         ipsecesp_params[5].ipsecesp_param_value
 131 #define ipsecesp_default_soft_bytes     \
 132         ipsecesp_params[6].ipsecesp_param_value
 133 #define ipsecesp_default_hard_bytes     \
 134         ipsecesp_params[7].ipsecesp_param_value
 135 #define ipsecesp_default_soft_addtime   \
 136         ipsecesp_params[8].ipsecesp_param_value
 137 #define ipsecesp_default_hard_addtime   \
 138         ipsecesp_params[9].ipsecesp_param_value
 139 #define ipsecesp_default_soft_usetime   \
 140         ipsecesp_params[10].ipsecesp_param_value
 141 #define ipsecesp_default_hard_usetime   \
 142         ipsecesp_params[11].ipsecesp_param_value
 143 #define ipsecesp_log_unknown_spi        \
 144         ipsecesp_params[12].ipsecesp_param_value
 145 #define ipsecesp_padding_check  \
 146         ipsecesp_params[13].ipsecesp_param_value
 147 #define ipsecesp_nat_keepalive_interval \
 148         ipsecesp_params[14].ipsecesp_param_value
 149
 150 #endif  /* _KERNEL */
 151
 152 /*
 153  * For now, only provide "aligned" version of header.
 154  * If aligned version is needed, we'll go with the naming conventions then.
 155  */
 156
 157 typedef struct esph {
 158         uint32_t esph_spi;
 159         uint32_t esph_replay;
 160 } esph_t;
 161
 162 /* No need for "old" ESP, just point a uint32_t *. */
 163
 164 #ifdef  __cplusplus
 165 }
 166 #endif
 167
 168 #endif /* _INET_IPSECESP_H */