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authorFilip Tehlar <ftehlar@cisco.com>2017-03-09 16:48:39 +0100
committerFlorin Coras <florin.coras@gmail.com>2017-03-21 15:31:56 +0000
commit4868ff65eddfd694a1485d6c6c355f9a8ca9011d (patch)
tree37a32136a23428e0fddcf50dd244c11ba67378f2 /src/vnet/lisp-gpe/lisp_gpe_adjacency.c
parent1dc2f9284e5b5eb8b300d63cdb8f74ee36cdecb0 (diff)
LISP statistics
Change-Id: I399cac46d279e020ba33459ef759d9d29d3ac716 Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
Diffstat (limited to 'src/vnet/lisp-gpe/lisp_gpe_adjacency.c')
-rw-r--r--src/vnet/lisp-gpe/lisp_gpe_adjacency.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/src/vnet/lisp-gpe/lisp_gpe_adjacency.c b/src/vnet/lisp-gpe/lisp_gpe_adjacency.c
index dbcf7134103..50662dd679f 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_adjacency.c
+++ b/src/vnet/lisp-gpe/lisp_gpe_adjacency.c
@@ -19,6 +19,7 @@
*/
#include <vnet/dpo/load_balance.h>
+#include <vnet/lisp-cp/control.h>
#include <vnet/lisp-cp/lisp_types.h>
#include <vnet/lisp-gpe/lisp_gpe_sub_interface.h>
#include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
@@ -223,9 +224,108 @@ lisp_gpe_adj_proto_from_vnet_link_type (vnet_link_t linkt)
#define is_v4_packet(_h) ((*(u8*) _h) & 0xF0) == 0x40
+static lisp_afi_e
+lisp_afi_from_vnet_link_type (vnet_link_t link)
+{
+ switch (link)
+ {
+ case VNET_LINK_IP4:
+ return LISP_AFI_IP;
+ case VNET_LINK_IP6:
+ return LISP_AFI_IP6;
+ case VNET_LINK_ETHERNET:
+ return LISP_AFI_MAC;
+ default:
+ return LISP_AFI_NO_ADDR;
+ }
+}
+
+static void
+lisp_gpe_increment_stats_counters (lisp_cp_main_t * lcm, ip_adjacency_t * adj,
+ vlib_buffer_t * b)
+{
+ lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
+ lisp_gpe_adjacency_t *ladj;
+ ip_address_t rloc;
+ index_t lai;
+ u32 si, di;
+ gid_address_t src, dst;
+ lisp_stats_t *stats;
+ uword *feip;
+
+ ip46_address_to_ip_address (&adj->sub_type.nbr.next_hop, &rloc);
+ si = vnet_buffer (b)->sw_if_index[VLIB_TX];
+ lai = lisp_adj_find (&rloc, si);
+ ASSERT (INDEX_INVALID != lai);
+
+ ladj = pool_elt_at_index (lisp_adj_pool, lai);
+
+ u8 *lisp_data = (u8 *) vlib_buffer_get_current (b);
+
+ /* skip IP header */
+ if (is_v4_packet (lisp_data))
+ lisp_data += sizeof (ip4_header_t);
+ else
+ lisp_data += sizeof (ip6_header_t);
+
+ /* skip UDP header */
+ lisp_data += sizeof (udp_header_t);
+ // TODO: skip TCP?
+
+ /* skip LISP GPE header */
+ lisp_data += sizeof (lisp_gpe_header_t);
+
+ i16 saved_current_data = b->current_data;
+ b->current_data = lisp_data - b->data;
+
+ lisp_afi_e afi = lisp_afi_from_vnet_link_type (adj->ia_link);
+ get_src_and_dst_eids_from_buffer (lcm, b, &src, &dst, afi);
+ b->current_data = saved_current_data;
+ di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst, &src);
+ if (PREDICT_FALSE (~0 == di))
+ {
+ clib_warning ("dst mapping not found (%U, %U)", format_gid_address,
+ &src, format_gid_address, &dst);
+ return;
+ }
+
+ feip = hash_get (lcm->fwd_entry_by_mapping_index, di);
+ if (PREDICT_FALSE (!feip))
+ return;
+
+ lisp_stats_key_t key;
+ memset (&key, 0, sizeof (key));
+ key.fwd_entry_index = feip[0];
+ key.tunnel_index = ladj->tunnel_index;
+
+ uword *p = hash_get_mem (lgm->lisp_stats_index_by_key, &key);
+ if (p)
+ {
+ stats = pool_elt_at_index (lgm->lisp_stats_pool, p[0]);
+ }
+ else
+ {
+ pool_get (lgm->lisp_stats_pool, stats);
+ memset (stats, 0, sizeof (*stats));
+
+ lisp_stats_key_t *key_copy = clib_mem_alloc (sizeof (*key_copy));
+ memcpy (key_copy, &key, sizeof (*key_copy));
+ hash_set_mem (lgm->lisp_stats_index_by_key, key_copy,
+ stats - lgm->lisp_stats_pool);
+ }
+ stats->pkt_count++;
+ /* compute payload length starting after GPE */
+ stats->bytes += b->current_length - (lisp_data - b->data - b->current_data);
+}
+
static void
lisp_gpe_fixup (vlib_main_t * vm, ip_adjacency_t * adj, vlib_buffer_t * b)
{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ if (lcm->flags & LISP_FLAG_STATS_ENABLED)
+ lisp_gpe_increment_stats_counters (lcm, adj, b);
+
/* Fixup the checksum and len fields in the LISP tunnel encap
* that was applied at the midchain node */
ip_udp_fixup_one (vm, b, is_v4_packet (vlib_buffer_get_current (b)));