ceph/src/seastar/dpdk/lib/librte_net/rte_arp.h

   1 /*   BSD LICENSE
   2  *
   3  *   Copyright(c) 2013 6WIND.
   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:
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   9  *     * Redistributions of source code must retain the above copyright
  10  *       notice, this list of conditions and the following disclaimer.
  11  *     * Redistributions in binary form must reproduce the above copyright
  12  *       notice, this list of conditions and the following disclaimer in
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  14  *       distribution.
  15  *     * Neither the name of 6WIND S.A. nor the names of its
  16  *       contributors may be used to endorse or promote products derived
  17  *       from this software without specific prior written permission.
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  19  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  29  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _RTE_ARP_H_
  33 #define _RTE_ARP_H_
  34
  35 /**
  36  * @file
  37  *
  38  * ARP-related defines
  39  */
  40
  41 #include <stdint.h>
  42 #include <rte_ether.h>
  43
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 /**
  49  * ARP header IPv4 payload.
  50  */
  51 struct arp_ipv4 {
  52         struct ether_addr arp_sha;  /**< sender hardware address */
  53         uint32_t          arp_sip;  /**< sender IP address */
  54         struct ether_addr arp_tha;  /**< target hardware address */
  55         uint32_t          arp_tip;  /**< target IP address */
  56 } __attribute__((__packed__));
  57
  58 /**
  59  * ARP header.
  60  */
  61 struct arp_hdr {
  62         uint16_t arp_hrd;    /* format of hardware address */
  63 #define ARP_HRD_ETHER     1  /* ARP Ethernet address format */
  64
  65         uint16_t arp_pro;    /* format of protocol address */
  66         uint8_t  arp_hln;    /* length of hardware address */
  67         uint8_t  arp_pln;    /* length of protocol address */
  68         uint16_t arp_op;     /* ARP opcode (command) */
  69 #define ARP_OP_REQUEST    1 /* request to resolve address */
  70 #define ARP_OP_REPLY      2 /* response to previous request */
  71 #define ARP_OP_REVREQUEST 3 /* request proto addr given hardware */
  72 #define ARP_OP_REVREPLY   4 /* response giving protocol address */
  73 #define ARP_OP_INVREQUEST 8 /* request to identify peer */
  74 #define ARP_OP_INVREPLY   9 /* response identifying peer */
  75
  76         struct arp_ipv4 arp_data;
  77 } __attribute__((__packed__));
  78
  79 #ifdef __cplusplus
  80 }
  81 #endif
  82
  83 #endif /* _RTE_ARP_H_ */