ligang/vpp
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ip: add tracing for ipv6 frag headers

Browse Source 
Type: feature

Change-Id: I0e049b28d8c21b67ea4545e865eda4e88f10e485
Signed-off-by: Klement Sekera <ksekera@cisco.com>
This commit is contained in:
Klement Sekera
2019-10-07 12:20:39 +00:00
committed by Andrew Yourtchenko
parent cc702410c1
commit 0eb75d0e9c
1 changed files with 24 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/vnet/ip/ip6_input.c
View File

@ -247,6 +247,25 @@ VLIB_REGISTER_NODE (ip6_input_node) = {
};
/* *INDENT-ON* */
static u8 *
format_ipv6_fragmentation (u8 * s, va_list * args)
{
ip6_frag_hdr_t *h = va_arg (*args, ip6_frag_hdr_t *);
u32 max_header_bytes = va_arg (*args, u32);
u32 header_bytes;
header_bytes = sizeof (h[0]);
if (max_header_bytes != 0 && header_bytes > max_header_bytes)
return format (s, "ipv6 frag header truncated");
s =
format (s,
"fragmentation header: next_hdr: %u, rsv: %u, frag_offset_and_more: %u, id: %u",
h->next_hdr, h->rsv, h->fragment_offset_and_more,
clib_net_to_host_u32 (h->identification));
return s;
}
static clib_error_t *
ip6_init (vlib_main_t * vm)
{
@ -266,6 +285,11 @@ ip6_init (vlib_main_t * vm)
/* Default hop limit for packets we generate. */
ip6_main.host_config.ttl = 64;
uword *u = hash_get (ip_main.protocol_info_by_name, "IPV6_FRAGMENTATION");
ip_protocol_info_t *info = vec_elt_at_index (ip_main.protocol_infos, *u);
ASSERT (NULL == info->format_header);
info->format_header = format_ipv6_fragmentation;
return /* no error */ 0;
}