sys/netgraph/ng_patch.h

   1 /*-
   2  * Copyright (C) 2010 by Maxim Ignatenko <gelraen.ua@gmail.com>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #ifndef _NETGRAPH_NG_PATCH_H_
  30 #define _NETGRAPH_NG_PATCH_H_
  31
  32 /* Node type name. */
  33 #define NG_PATCH_NODE_TYPE      "patch"
  34
  35 /* Node type cookie. */
  36 #define NGM_PATCH_COOKIE        1262445509
  37
  38 /* Hook names */
  39 #define NG_PATCH_HOOK_IN        "in"
  40 #define NG_PATCH_HOOK_OUT       "out"
  41
  42 /* Netgraph commands understood by this node type */
  43 enum {
  44         NGM_PATCH_SETCONFIG = 1,
  45         NGM_PATCH_GETCONFIG,
  46         NGM_PATCH_GET_STATS,
  47         NGM_PATCH_CLR_STATS,
  48         NGM_PATCH_GETCLR_STATS
  49 };
  50
  51 /* Patching modes */
  52 enum {
  53         NG_PATCH_MODE_SET = 1,
  54         NG_PATCH_MODE_ADD = 2,
  55         NG_PATCH_MODE_SUB = 3,
  56         NG_PATCH_MODE_MUL = 4,
  57         NG_PATCH_MODE_DIV = 5,
  58         NG_PATCH_MODE_NEG = 6,
  59         NG_PATCH_MODE_AND = 7,
  60         NG_PATCH_MODE_OR = 8,
  61         NG_PATCH_MODE_XOR = 9,
  62         NG_PATCH_MODE_SHL = 10,
  63         NG_PATCH_MODE_SHR = 11
  64 };
  65
  66 struct ng_patch_op {
  67         uint64_t        value;
  68         uint32_t        offset;
  69         uint16_t        length; /* 1,2,4 or 8 (bytes) */
  70         uint16_t        mode;
  71 };
  72
  73 #define NG_PATCH_OP_TYPE_INFO   {       \
  74                 { "value",      &ng_parse_uint64_type   },      \
  75                 { "offset",     &ng_parse_uint32_type   },      \
  76                 { "length",     &ng_parse_uint16_type   },      \
  77                 { "mode",       &ng_parse_uint16_type   },      \
  78                 { NULL } \
  79 }
  80
  81 struct ng_patch_config {
  82         uint32_t        count;
  83         uint32_t        csum_flags;
  84         struct ng_patch_op ops[];
  85 };
  86
  87 #define NG_PATCH_CONFIG_TYPE_INFO       {       \
  88                 { "count",      &ng_parse_uint32_type   },      \
  89                 { "csum_flags", &ng_parse_uint32_type   },      \
  90                 { "ops",        &ng_patch_confarr_type  },      \
  91                 { NULL } \
  92 }
  93
  94 struct ng_patch_stats {
  95         uint64_t        received;
  96         uint64_t        patched;
  97         uint64_t        dropped;
  98 };
  99
 100 #define NG_PATCH_STATS_TYPE_INFO {      \
 101                 { "received",   &ng_parse_uint64_type   },      \
 102                 { "patched",    &ng_parse_uint64_type   },      \
 103                 { "dropped",    &ng_parse_uint64_type   },      \
 104                 { NULL } \
 105 }
 106
 107 #endif /* _NETGRAPH_NG_PATCH_H_ */