LISP: add dump calls for GPE entries API

Change-Id: Ie7f51643fd3522a0fa8df8d0309305481c211f5f
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>

4 files changed, 248 insertions, 0 deletions

diff --git a/src/vnet/lisp-gpe/lisp_gpe.api b/src/vnet/lisp-gpe/lisp_gpe.api
index 2a79becee48..48baa2fe99f 100644
--- a/src/vnet/lisp-gpe/lisp_gpe.api
+++ b/src/vnet/lisp-gpe/lisp_gpe.api
@@ -117,6 +117,47 @@ define lisp_gpe_add_del_iface_reply
   i32 retval;
 };
 
+define lisp_gpe_fwd_entries_get
+{
+  u32 client_index;
+  u32 context;
+  u32 vni;
+};
+
+typeonly manual_print manual_endian define lisp_gpe_fwd_entry
+{
+  u32 fwd_entry_index;
+  u32 dp_table;
+  u8 eid_type;
+  u8 leid_prefix_len;
+  u8 reid_prefix_len;
+  u8 leid[16];
+  u8 reid[16];
+};
+
+manual_print manual_endian define lisp_gpe_fwd_entries_get_reply
+{
+  u32 context;
+  i32 retval;
+  u32 count;
+  vl_api_lisp_gpe_fwd_entry_t entries[count];
+};
+
+define lisp_gpe_fwd_entry_path_dump
+{
+  u32 client_index;
+  u32 context;
+  u32 fwd_entry_index;
+};
+
+manual_endian manual_print define lisp_gpe_fwd_entry_path_details
+{
+  u32 client_index;
+  u32 context;
+  vl_api_lisp_gpe_locator_t lcl_loc;
+  vl_api_lisp_gpe_locator_t rmt_loc;
+};
+
 /*
  * Local Variables:
  * eval: (c-set-style "gnu")
diff --git a/src/vnet/lisp-gpe/lisp_gpe.h b/src/vnet/lisp-gpe/lisp_gpe.h
index bb0f788b197..3288c99ffee 100644
--- a/src/vnet/lisp-gpe/lisp_gpe.h
+++ b/src/vnet/lisp-gpe/lisp_gpe.h
@@ -220,6 +220,15 @@ typedef struct
   };
 } vnet_lisp_gpe_add_del_fwd_entry_args_t;
 
+typedef struct
+{
+  u32 fwd_entry_index;
+  u32 dp_table;
+  u32 vni;
+  dp_address_t leid;
+  dp_address_t reid;
+} lisp_api_gpe_fwd_entry_t;
+
 #define foreach_lgpe_ip4_lookup_next    \
   _(DROP, "error-drop")                 \
   _(LISP_CP_LOOKUP, "lisp-cp-lookup")
@@ -246,6 +255,8 @@ typedef enum lgpe_ip6_lookup_next
 
 u8 *format_vnet_lisp_gpe_status (u8 * s, va_list * args);
 
+lisp_api_gpe_fwd_entry_t *vnet_lisp_gpe_fwd_entries_get_by_vni (u32 vni);
+
 #endif /* included_vnet_lisp_gpe_h */
 
 /*
diff --git a/src/vnet/lisp-gpe/lisp_gpe_api.c b/src/vnet/lisp-gpe/lisp_gpe_api.c
index 93b6053203e..29f7639f1f6 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_api.c
+++ b/src/vnet/lisp-gpe/lisp_gpe_api.c
@@ -23,6 +23,8 @@
 #include <vnet/interface.h>
 #include <vnet/api_errno.h>
 #include <vnet/lisp-gpe/lisp_gpe.h>
+#include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
+#include <vnet/lisp-gpe/lisp_gpe_tunnel.h>
 #include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
 #include <vnet/lisp-gpe/lisp_gpe_tenant.h>
 
@@ -51,6 +53,8 @@
 
 #define foreach_vpe_api_msg                             \
 _(LISP_GPE_ADD_DEL_FWD_ENTRY, lisp_gpe_add_del_fwd_entry)               \
+_(LISP_GPE_FWD_ENTRIES_GET, lisp_gpe_fwd_entries_get)                   \
+_(LISP_GPE_FWD_ENTRY_PATH_DUMP, lisp_gpe_fwd_entry_path_dump)           \
 _(LISP_GPE_ENABLE_DISABLE, lisp_gpe_enable_disable)                     \
 _(LISP_GPE_ADD_DEL_IFACE, lisp_gpe_add_del_iface)
 
@@ -115,6 +119,172 @@ unformat_lisp_eid_api (gid_address_t * dst, u32 vni, u8 type, void *src,
 }
 
 static void
+  lisp_gpe_fwd_entry_path_dump_t_net_to_host
+  (vl_api_lisp_gpe_fwd_entry_path_dump_t * mp)
+{
+  mp->fwd_entry_index = clib_net_to_host_u32 (mp->fwd_entry_index);
+}
+
+static void
+lisp_api_set_locator (vl_api_lisp_gpe_locator_t * loc,
+		      const ip_address_t * addr, u8 weight)
+{
+  loc->weight = weight;
+  if (IP4 == ip_addr_version (addr))
+    {
+      loc->is_ip4 = 1;
+      memcpy (loc->addr, addr, 4);
+    }
+  else
+    {
+      loc->is_ip4 = 0;
+      memcpy (loc->addr, addr, 16);
+    }
+}
+
+static void
+  vl_api_lisp_gpe_fwd_entry_path_dump_t_handler
+  (vl_api_lisp_gpe_fwd_entry_path_dump_t * mp)
+{
+  lisp_fwd_path_t *path;
+  vl_api_lisp_gpe_fwd_entry_path_details_t *rmp = NULL;
+  lisp_gpe_main_t *lgm = &lisp_gpe_main;
+  unix_shared_memory_queue_t *q = NULL;
+  lisp_gpe_fwd_entry_t *lfe;
+
+  lisp_gpe_fwd_entry_path_dump_t_net_to_host (mp);
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  if (pool_is_free_index (lgm->lisp_fwd_entry_pool, mp->fwd_entry_index))
+    return;
+
+  lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, mp->fwd_entry_index);
+
+  if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
+    return;
+
+  vec_foreach (path, lfe->paths)
+  {
+    rmp = vl_msg_api_alloc (sizeof (*rmp));
+    memset (rmp, 0, sizeof (*rmp));
+    const lisp_gpe_tunnel_t *lgt;
+
+    rmp->_vl_msg_id =
+      clib_host_to_net_u16 (VL_API_LISP_GPE_FWD_ENTRY_PATH_DETAILS);
+
+    const lisp_gpe_adjacency_t *ladj =
+      lisp_gpe_adjacency_get (path->lisp_adj);
+    lisp_api_set_locator (&rmp->rmt_loc, &ladj->remote_rloc, path->weight);
+    lgt = lisp_gpe_tunnel_get (ladj->tunnel_index);
+    lisp_api_set_locator (&rmp->lcl_loc, &lgt->key->lcl, path->weight);
+
+    rmp->context = mp->context;
+    vl_msg_api_send_shmem (q, (u8 *) & rmp);
+  }
+}
+
+static void
+lisp_gpe_fwd_entries_copy (vl_api_lisp_gpe_fwd_entry_t * dst,
+			   lisp_api_gpe_fwd_entry_t * src)
+{
+  lisp_api_gpe_fwd_entry_t *e;
+  u32 i = 0;
+
+  vec_foreach (e, src)
+  {
+    memset (dst, 0, sizeof (*dst));
+    dst[i].dp_table = src->dp_table;
+    dst[i].fwd_entry_index = src->fwd_entry_index;
+    switch (fid_addr_type (&e->leid))
+      {
+      case FID_ADDR_IP_PREF:
+	if (IP4 == ip_prefix_version (&fid_addr_ippref (&e->leid)))
+	  {
+	    memcpy (&dst[i].leid, &fid_addr_ippref (&e->leid), 4);
+	    memcpy (&dst[i].reid, &fid_addr_ippref (&e->reid), 4);
+	    dst[i].eid_type = 0;
+	  }
+	else
+	  {
+	    memcpy (&dst[i].leid, &fid_addr_ippref (&e->leid), 16);
+	    memcpy (&dst[i].reid, &fid_addr_ippref (&e->reid), 16);
+	    dst[i].eid_type = 1;
+	  }
+	dst[i].leid_prefix_len = ip_prefix_len (&fid_addr_ippref (&e->leid));
+	dst[i].reid_prefix_len = ip_prefix_len (&fid_addr_ippref (&e->reid));
+	break;
+      case FID_ADDR_MAC:
+	memcpy (&dst[i].leid, fid_addr_mac (&e->leid), 6);
+	memcpy (&dst[i].reid, fid_addr_mac (&e->reid), 6);
+	dst[i].eid_type = 2;
+	break;
+      default:
+	clib_warning ("unknown fid type %d!", fid_addr_type (&e->leid));
+	break;
+      }
+    i++;
+  }
+}
+
+static void
+  lisp_gpe_fwd_entries_get_t_net_to_host
+  (vl_api_lisp_gpe_fwd_entries_get_t * mp)
+{
+  mp->vni = clib_net_to_host_u32 (mp->vni);
+}
+
+static void
+lisp_gpe_entry_t_host_to_net (vl_api_lisp_gpe_fwd_entry_t * e)
+{
+  e->fwd_entry_index = clib_host_to_net_u32 (e->fwd_entry_index);
+  e->dp_table = clib_host_to_net_u32 (e->dp_table);
+}
+
+static void
+  lisp_gpe_fwd_entries_get_reply_t_host_to_net
+  (vl_api_lisp_gpe_fwd_entries_get_reply_t * mp)
+{
+  u32 i;
+  vl_api_lisp_gpe_fwd_entry_t *e;
+
+  for (i = 0; i < mp->count; i++)
+    {
+      e = &mp->entries[i];
+      lisp_gpe_entry_t_host_to_net (e);
+    }
+  mp->count = clib_host_to_net_u32 (mp->count);
+}
+
+static void
+  vl_api_lisp_gpe_fwd_entries_get_t_handler
+  (vl_api_lisp_gpe_fwd_entries_get_t * mp)
+{
+  lisp_api_gpe_fwd_entry_t *e;
+  vl_api_lisp_gpe_fwd_entries_get_reply_t *rmp = 0;
+  u32 size = 0;
+  int rv = 0;
+
+  lisp_gpe_fwd_entries_get_t_net_to_host (mp);
+
+  e = vnet_lisp_gpe_fwd_entries_get_by_vni (mp->vni);
+  size = vec_len (e) * sizeof (vl_api_lisp_gpe_fwd_entry_t);
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO4 (VL_API_LISP_GPE_FWD_ENTRIES_GET_REPLY, size,
+  {
+    rmp->count = vec_len (e);
+    lisp_gpe_fwd_entries_copy (rmp->entries, e);
+    lisp_gpe_fwd_entries_get_reply_t_host_to_net (rmp);
+  });
+  /* *INDENT-ON* */
+
+  vec_free (e);
+}
+
+static void
   lisp_gpe_add_del_fwd_entry_t_net_to_host
   (vl_api_lisp_gpe_add_del_fwd_entry_t * mp)
 {
diff --git a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
index e05f0e01bee..7ad8679e8c0 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
+++ b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
@@ -1042,6 +1042,32 @@ lisp_gpe_fwd_entry_init (vlib_main_t * vm)
   return (error);
 }
 
+lisp_api_gpe_fwd_entry_t *
+vnet_lisp_gpe_fwd_entries_get_by_vni (u32 vni)
+{
+  lisp_gpe_main_t *lgm = &lisp_gpe_main;
+  lisp_gpe_fwd_entry_t *lfe;
+  lisp_api_gpe_fwd_entry_t *entries = 0, e;
+
+  /* *INDENT-OFF* */
+  pool_foreach (lfe, lgm->lisp_fwd_entry_pool,
+  ({
+    if (lfe->key->vni == vni)
+      {
+        memset (&e, 0, sizeof (e));
+        e.dp_table = lfe->eid_table_id;
+        e.vni = lfe->key->vni;
+        e.fwd_entry_index = lfe - lgm->lisp_fwd_entry_pool;
+        memcpy (&e.reid, &lfe->key->rmt, sizeof (e.reid));
+        memcpy (&e.leid, &lfe->key->lcl, sizeof (e.leid));
+        vec_add1 (entries, e);
+      }
+  }));
+  /* *INDENT-ON* */
+
+  return entries;
+}
+
 VLIB_INIT_FUNCTION (lisp_gpe_fwd_entry_init);
 
 /*