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      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 2008 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef _INET_IPDROP_H
     27 #define	_INET_IPDROP_H
     28 
     29 #ifdef	__cplusplus
     30 extern "C" {
     31 #endif
     32 
     33 #ifdef _KERNEL
     34 /*
     35  * Opaque data type which will contain state about an entity that is dropping
     36  * a packet (e.g. IPsec SPD, IPsec SADB, TCP, IP forwarding, etc.).
     37  */
     38 typedef struct ipdropper_s {
     39 	char *ipd_name;
     40 } ipdropper_t;
     41 
     42 void ip_drop_register(ipdropper_t *, char *);
     43 void ip_drop_unregister(ipdropper_t *);
     44 void ip_drop_packet(mblk_t *, boolean_t, ill_t *, ire_t *, struct kstat_named *,
     45     ipdropper_t *);
     46 
     47 /*
     48  * ip_dropstats - When a protocol developer comes up with a new reason to
     49  * drop a packet, it should have a bean counter placed here in this structure,
     50  * and an initializer in ipdrop.c's ip_drop_init().
     51  *
     52  * This will suffice until we come up with a more dynamic way of adding
     53  * named kstats to a single kstat instance (if that is possible).
     54  */
     55 struct ip_dropstats {
     56 	/* TCP IPsec drop statistics. */
     57 	kstat_named_t ipds_tcp_clear;
     58 	kstat_named_t ipds_tcp_secure;
     59 	kstat_named_t ipds_tcp_mismatch;
     60 	kstat_named_t ipds_tcp_ipsec_alloc;
     61 
     62 	/* SADB-specific drop statistics. */
     63 	kstat_named_t ipds_sadb_inlarval_timeout;
     64 	kstat_named_t ipds_sadb_inlarval_replace;
     65 	kstat_named_t ipds_sadb_inidle_timeout;
     66 	kstat_named_t ipds_sadb_inidle_overflow;
     67 	kstat_named_t ipds_sadb_acquire_nomem;
     68 	kstat_named_t ipds_sadb_acquire_toofull;
     69 	kstat_named_t ipds_sadb_acquire_timeout;
     70 
     71 	/* SPD drop statistics. */
     72 	kstat_named_t ipds_spd_ahesp_diffid;
     73 	kstat_named_t ipds_spd_loopback_mismatch;
     74 	kstat_named_t ipds_spd_explicit;
     75 	kstat_named_t ipds_spd_got_secure;
     76 	kstat_named_t ipds_spd_got_clear;
     77 	kstat_named_t ipds_spd_bad_ahalg;
     78 	kstat_named_t ipds_spd_got_ah;
     79 	kstat_named_t ipds_spd_bad_espealg;
     80 	kstat_named_t ipds_spd_bad_espaalg;
     81 	kstat_named_t ipds_spd_got_esp;
     82 	kstat_named_t ipds_spd_got_selfencap;
     83 	kstat_named_t ipds_spd_bad_selfencap;
     84 	kstat_named_t ipds_spd_nomem;
     85 	kstat_named_t ipds_spd_ah_badid;
     86 	kstat_named_t ipds_spd_esp_badid;
     87 	kstat_named_t ipds_spd_ah_innermismatch;
     88 	kstat_named_t ipds_spd_esp_innermismatch;
     89 	kstat_named_t ipds_spd_no_policy;
     90 	kstat_named_t ipds_spd_malformed_packet;
     91 	kstat_named_t ipds_spd_malformed_frag;
     92 	kstat_named_t ipds_spd_overlap_frag;
     93 	kstat_named_t ipds_spd_evil_frag;
     94 	kstat_named_t ipds_spd_max_frags;
     95 
     96 	/* ESP-specific drop statistics. */
     97 	kstat_named_t ipds_esp_nomem;
     98 	kstat_named_t ipds_esp_no_sa;
     99 	kstat_named_t ipds_esp_early_replay;
    100 	kstat_named_t ipds_esp_replay;
    101 	kstat_named_t ipds_esp_bytes_expire;
    102 	kstat_named_t ipds_esp_bad_padlen;
    103 	kstat_named_t ipds_esp_bad_padding;
    104 	kstat_named_t ipds_esp_bad_auth;
    105 	kstat_named_t ipds_esp_crypto_failed;
    106 	kstat_named_t ipds_esp_icmp;
    107 	kstat_named_t ipds_esp_nat_t_ipsec;
    108 	kstat_named_t ipds_esp_nat_t_ka;
    109 
    110 	/* AH-specific drop statistics. */
    111 	kstat_named_t ipds_ah_nomem;
    112 	kstat_named_t ipds_ah_bad_v6_hdrs;
    113 	kstat_named_t ipds_ah_bad_v4_opts;
    114 	kstat_named_t ipds_ah_no_sa;
    115 	kstat_named_t ipds_ah_bad_length;
    116 	kstat_named_t ipds_ah_bad_auth;
    117 	kstat_named_t ipds_ah_crypto_failed;
    118 	kstat_named_t ipds_ah_early_replay;
    119 	kstat_named_t ipds_ah_replay;
    120 	kstat_named_t ipds_ah_bytes_expire;
    121 
    122 	/* IP-specific drop statistics. */
    123 	kstat_named_t ipds_ip_ipsec_not_loaded;
    124 };
    125 
    126 #endif /* _KERNEL */
    127 
    128 #ifdef	__cplusplus
    129 }
    130 #endif
    131 
    132 #endif	/* _INET_IPDROP_H */
    133