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support IPv4 & IPv6 frag reassemble

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This commit is contained in:
luwenpeng
2024-02-22 18:52:04 +08:00
parent 5e5ac458f2
commit 5cd0571b4d
21 changed files with 2116 additions and 95 deletions
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19
src/packet/ipv6_utils.h
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@@ -35,6 +35,16 @@ extern "C"
* + +
* | |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
* Fragment Header
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Next Header | Reserved | Fragment Offset |Res|M|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Identification |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
/******************************************************************************
@@ -81,6 +91,15 @@ static inline struct in6_addr ipv6_hdr_get_dst_in6_addr(const struct ip6_hdr *hd
return hdr->ip6_dst;
}
static inline struct ip6_frag *ipv6_hdr_get_frag_ext(const struct ip6_hdr *hdr)
{
if (hdr->ip6_nxt != IPPROTO_FRAGMENT)
{
return NULL;
}
return (struct ip6_frag *)((char *)hdr + sizeof(struct ip6_hdr));
}
// TODO IPv6 extension headers
/******************************************************************************