The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_checksum.h

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    1 /*-
    2  * Copyright (c) 2015 Dmitry Vagin <daemon.hammer@ya.ru>
    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: releng/11.2/sys/netgraph/ng_checksum.h 309385 2016-12-02 05:36:37Z julian $
   27  */
   28 
   29 #ifndef _NETGRAPH_NG_CHECKSUM_H_
   30 #define _NETGRAPH_NG_CHECKSUM_H_
   31 
   32 /* Node type name. */
   33 #define NG_CHECKSUM_NODE_TYPE   "checksum"
   34 
   35 /* Node type cookie. */
   36 #define NGM_CHECKSUM_COOKIE     439419912
   37 
   38 /* Hook names */
   39 #define NG_CHECKSUM_HOOK_IN     "in"
   40 #define NG_CHECKSUM_HOOK_OUT    "out"
   41 
   42 /* Checksum flags */
   43 #define NG_CHECKSUM_CSUM_IPV4   (CSUM_IP|CSUM_TCP|CSUM_UDP)
   44 #define NG_CHECKSUM_CSUM_IPV6   (CSUM_TCP_IPV6|CSUM_UDP_IPV6)
   45 
   46 /* Netgraph commands understood by this node type */
   47 enum {
   48         NGM_CHECKSUM_GETDLT = 1,
   49         NGM_CHECKSUM_SETDLT,
   50         NGM_CHECKSUM_GETCONFIG,
   51         NGM_CHECKSUM_SETCONFIG,
   52         NGM_CHECKSUM_GETCLR_STATS,
   53         NGM_CHECKSUM_GET_STATS,
   54         NGM_CHECKSUM_CLR_STATS,
   55 };
   56 
   57 /* Parsing declarations */
   58 
   59 #define NG_CHECKSUM_CONFIG_TYPE {                               \
   60         { "csum_flags",         &ng_parse_uint64_type   },      \
   61         { "csum_offload",       &ng_parse_uint64_type   },      \
   62         { NULL }                                                \
   63 }
   64 
   65 #define NG_CHECKSUM_STATS_TYPE {                                \
   66         { "Received",           &ng_parse_uint64_type   },      \
   67         { "Processed",          &ng_parse_uint64_type   },      \
   68         { "Dropped",            &ng_parse_uint64_type   },      \
   69         { NULL }                                        \
   70 }
   71 
   72 struct ng_checksum_config {
   73         uint64_t        csum_flags;
   74         uint64_t        csum_offload;
   75 };
   76 
   77 struct ng_checksum_stats {
   78         uint64_t        received;
   79         uint64_t        processed;
   80         uint64_t        dropped;
   81 };
   82 
   83 struct ng_checksum_vlan_header {
   84         u_int16_t tag;
   85         u_int16_t etype;
   86 };
   87 
   88 #endif /* _NETGRAPH_NG_CHECKSUM_H_ */

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