diff options
| author |   Klement Sekera <ksekera@cisco.com> | 2019-10-07 12:20:39 +0000 |
|---|---|---|
| committer |   Andrew Yourtchenko <ayourtch@gmail.com> | 2019-10-07 16:58:02 +0000 |
| commit | 0eb75d0e9c7624a4e8ac69fea7dbe12d39b75096 (patch) | |
| tree | e0b92a1a231109914e5767423d32909b1b5658f5 | |
| parent | cc702410c18b5c54ec8686b02a0d208c9bc80421 (diff) | |
ip: add tracing for ipv6 frag headers
Type: feature
Change-Id: I0e049b28d8c21b67ea4545e865eda4e88f10e485
Signed-off-by: Klement Sekera <ksekera@cisco.com>
| -rw-r--r-- | src/vnet/ip/ip6_input.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/vnet/ip/ip6_input.c b/src/vnet/ip/ip6_input.c index 0450064eafe..6fab5822da2 100644 --- a/src/vnet/ip/ip6_input.c +++ b/src/vnet/ip/ip6_input.c @@ -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; } |