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packet parser suppoort skip IPv6 extension headers

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This commit is contained in:
luwenpeng
2024-05-30 13:49:31 +08:00
parent 8092b3a90e
commit 1a7f74025b
6 changed files with 91 additions and 36 deletions
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39
test/packet_parser/packet_parser.cpp
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@@ -1,5 +1,6 @@
#include <unistd.h>
#include <pcap/pcap.h>
#include "ipv6_utils.h"
#include "packet_priv.h"
struct options
@@ -11,6 +12,42 @@ struct options
static uint64_t number = 0;
static int ipv6_proto_to_str(const struct packet_layer *ipv6_layer, char *buff, int size)
{
int used = snprintf(buff, size, "ipv6");
uint16_t skip_len = sizeof(struct ip6_hdr);
uint8_t next_hdr = ipv6_hdr_get_next_header((const struct ip6_hdr *)ipv6_layer->hdr_ptr);
while (skip_len < ipv6_layer->hdr_len)
{
if (next_hdr == IPPROTO_HOPOPTS)
{
used += snprintf(buff + used, size - used, ":ipv6.hopopt");
}
else if (next_hdr == IPPROTO_ROUTING)
{
used += snprintf(buff + used, size - used, ":ipv6.routing");
}
else if (next_hdr == IPPROTO_AH)
{
used += snprintf(buff + used, size - used, ":ipv6.ah");
}
else if (next_hdr == IPPROTO_DSTOPTS)
{
used += snprintf(buff + used, size - used, ":ipv6.dstopts");
}
else
{
break;
}
struct ip6_ext *ext = (struct ip6_ext *)ipv6_layer->hdr_ptr + skip_len;
skip_len += ext->ip6e_len * 8 + 8;
next_hdr = ext->ip6e_nxt;
}
return used;
}
static int packet_proto_to_str(const struct packet *pkt, char *buff, int size)
{
int used = 0;
@@ -45,7 +82,7 @@ static int packet_proto_to_str(const struct packet *pkt, char *buff, int size)
used += snprintf(buff + used, size - used, "ip");
break;
case LAYER_TYPE_IPV6:
used += snprintf(buff + used, size - used, "ipv6");
used += ipv6_proto_to_str(layer, buff + used, size - used);
break;
case LAYER_TYPE_GRE:
used += snprintf(buff + used, size - used, "gre");