ip_frag.h 2.9 KB

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  1. /*
  2. * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without modification,
  6. * are permitted provided that the following conditions are met:
  7. *
  8. * 1. Redistributions of source code must retain the above copyright notice,
  9. * this list of conditions and the following disclaimer.
  10. * 2. Redistributions in binary form must reproduce the above copyright notice,
  11. * this list of conditions and the following disclaimer in the documentation
  12. * and/or other materials provided with the distribution.
  13. * 3. The name of the author may not be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  17. * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  18. * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  19. * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  20. * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  21. * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22. * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23. * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  24. * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  25. * OF SUCH DAMAGE.
  26. *
  27. * This file is part of the lwIP TCP/IP stack.
  28. *
  29. * Author: Jani Monoses <jani@iv.ro>
  30. *
  31. */
  32. #ifndef __LWIP_IP_FRAG_H__
  33. #define __LWIP_IP_FRAG_H__
  34. #include "lwip/opt.h"
  35. #include "lwip/err.h"
  36. #include "lwip/pbuf.h"
  37. #include "lwip/netif.h"
  38. #include "lwip/ip_addr.h"
  39. #include "lwip/ip.h"
  40. #ifdef __cplusplus
  41. extern "C" {
  42. #endif
  43. #if IP_REASSEMBLY
  44. /* The IP reassembly timer interval in milliseconds. */
  45. #define IP_TMR_INTERVAL 1000
  46. /* IP reassembly helper struct.
  47. * This is exported because memp needs to know the size.
  48. */
  49. struct ip_reassdata {
  50. struct ip_reassdata *next;
  51. struct pbuf *p;
  52. struct ip_hdr iphdr;
  53. u16_t datagram_len;
  54. u8_t flags;
  55. u8_t timer;
  56. };
  57. void ip_reass_init(void)ICACHE_FLASH_ATTR;
  58. void ip_reass_tmr(void)ICACHE_FLASH_ATTR;
  59. struct pbuf * ip_reass(struct pbuf *p)ICACHE_FLASH_ATTR;
  60. #endif /* IP_REASSEMBLY */
  61. #if IP_FRAG
  62. #if !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF
  63. /** A custom pbuf that holds a reference to another pbuf, which is freed
  64. * when this custom pbuf is freed. This is used to create a custom PBUF_REF
  65. * that points into the original pbuf. */
  66. struct pbuf_custom_ref {
  67. /** 'base class' */
  68. struct pbuf_custom pc;
  69. /** pointer to the original pbuf that is referenced */
  70. struct pbuf *original;
  71. };
  72. #endif /* !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF */
  73. err_t ip_frag(struct pbuf *p, struct netif *netif, ip_addr_t *dest)ICACHE_FLASH_ATTR;
  74. #endif /* IP_FRAG */
  75. #ifdef __cplusplus
  76. }
  77. #endif
  78. #endif /* __LWIP_IP_FRAG_H__ */