usr/src/uts/common/sys/hook_event.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  */
  25
  26 /*
  27  * This file include definition of message passed from hook provider
  28  * to hook consumer.  If necessary, each hook provider can add its
  29  * own message definition here.
  30  */
  31
  32 #ifndef _SYS_HOOK_EVENT_H
  33 #define _SYS_HOOK_EVENT_H
  34
  35 #include <sys/neti.h>
  36 #include <sys/hook.h>
  37
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 struct msgb;    /* avoiding sys/stream.h here */
  43
  44 /*
  45  * The hook_pkt_event_t structure is supplied with packet events on
  46  * associated network interfaces.
  47  *
  48  * The members of this structure are defined as follows:
  49  * hpe_protocol - protocol identifier that indicates which protocol the
  50  *                header data is associated with.
  51  * hpe_ifp - "in" interface for packets coming into the system or forwarded
  52  * hpe_ofp - "out" interface for packets being transmitted or forwarded
  53  * hpe_hdr - pointer to protocol header within the packet
  54  * hpe_mp  - pointer to the mblk pointer starting the chain for this packet
  55  * hpe_mb  - pointer to the mblk that contains hpe_hdr
  56  */
  57 typedef struct hook_pkt_event {
  58         net_handle_t            hpe_protocol;
  59         phy_if_t                hpe_ifp;
  60         phy_if_t                hpe_ofp;
  61         void                    *hpe_hdr;
  62         struct msgb             **hpe_mp;
  63         struct msgb             *hpe_mb;
  64         int                     hpe_flags;
  65         void                    *hpe_reserved[2];
  66 } hook_pkt_event_t;
  67
  68 #define HPE_MULTICAST   0x01
  69 #define HPE_BROADCAST   0x02
  70
  71 /*
  72  * NIC events hook provider
  73  */
  74 typedef enum nic_event {
  75         NE_PLUMB = 1,
  76         NE_UNPLUMB,
  77         NE_UP,
  78         NE_DOWN,
  79         NE_ADDRESS_CHANGE,
  80         NE_LIF_UP,
  81         NE_LIF_DOWN,
  82         NE_IFINDEX_CHANGE
  83 } nic_event_t;
  84
  85 typedef void *nic_event_data_t;
  86
  87 /*
  88  * The hook_nic_event data structure is provided with all network interface
  89  * events.
  90  *
  91  * hne_protocol- network protocol for events, returned from net_lookup
  92  * hne_nic     - physical interface associated with event
  93  * hne_lif     - logical interface (if any) associated with event
  94  * hne_event   - type of event occuring
  95  * hne_data    - pointer to extra data about event or NULL if none
  96  * hne_datalen - size of data pointed to by hne_data (can be 0)
  97  */
  98 typedef struct hook_nic_event {
  99         net_handle_t            hne_protocol;
 100         phy_if_t                hne_nic;
 101         lif_if_t                hne_lif;
 102         nic_event_t             hne_event;
 103         nic_event_data_t        hne_data;
 104         size_t                  hne_datalen;
 105 } hook_nic_event_t;
 106
 107 /*
 108  * This structure is used internally by ip to queue events.
 109  */
 110 struct hook_nic_event_int {
 111         netstackid_t            hnei_stackid;
 112         hook_nic_event_t        hnei_event;
 113 };
 114 typedef struct hook_nic_event_int hook_nic_event_int_t;
 115
 116 /*
 117  * This structure holds the data passed back from the ip module to
 118  * observability consumers.
 119  *
 120  * Externally exposed fields, that must match the order and size of
 121  * dl_ipnetinfo_t in <sys/dlpi.h> are:
 122  * hpo_version    Version number for this header
 123  * hpo_family     Address family of the attached packet
 124  * hpo_htype      IPobs hook type
 125  * hpo_pktlen     Length of the attached packet
 126  * hpo_ifindex    Interface index that the packet was received/sent over.
 127  *                For local packets, this is the index of the interface
 128  *                associated with the local destination address.
 129  * hpo_grifindex  IPMP group interface index (zero unless ihd_ifindex
 130  *                is an IPMP underlying interface).
 131  * hpo_zsrc       Source zoneid; set to ALL_ZONES when unknown.
 132  * hpo_zdst       Destination zoneid; set to ALL_ZONES when unknown.
 133  *
 134  * Fields used internally are:
 135  * hpo_pkt        Pointer to the mblk_t containig this structure with
 136  *                the real packet found at b_cont
 137  */
 138 typedef struct hook_pkt_observe_s {
 139         uint8_t         hpo_version;
 140         uint8_t         hpo_family;
 141         uint16_t        hpo_htype;
 142         uint32_t        hpo_pktlen;
 143         uint32_t        hpo_ifindex;
 144         uint32_t        hpo_grifindex;
 145         uint32_t        hpo_zsrc;
 146         uint32_t        hpo_zdst;
 147         /*
 148          * Fields used internally are below.
 149          */
 150         struct msgb     *hpo_pkt;
 151         void            *hpo_ctx;
 152 } hook_pkt_observe_t;
 153
 154 /*
 155  * ipobs_hooktype_t describes the hook types supported
 156  * by the ip module. IPOBS_HOOK_LOCAL refers to packets
 157  * which are looped back internally within the ip module.
 158  */
 159
 160 typedef enum ipobs_hook_type {
 161         IPOBS_HOOK_INBOUND = 0,
 162         IPOBS_HOOK_OUTBOUND = 1,
 163         IPOBS_HOOK_LOCAL = 2
 164 } ipobs_hook_type_t;
 165
 166
 167 #ifdef  __cplusplus
 168 }
 169 #endif
 170
 171 #endif /* _SYS_HOOK_EVENT_H */