#include <vnet/adj/adj_nbr.h>
#include <vnet/mpls/mpls.h>
#include <vnet/l2/l2_input.h>
+#include <vnet/nhrp/nhrp.h>
u8 *
format_gre_tunnel_type (u8 * s, va_list * args)
return (s);
}
-u8 *
-format_gre_tunnel_mode (u8 * s, va_list * args)
-{
- gre_tunnel_mode_t mode = va_arg (*args, int);
-
- switch (mode)
- {
-#define _(n, v) case GRE_TUNNEL_MODE_##n: \
- s = format (s, "%s", v); \
- break;
- foreach_gre_tunnel_mode
-#undef _
- }
-
- return (s);
-}
-
static u8 *
format_gre_tunnel (u8 * s, va_list * args)
{
t->outer_fib_index, t->sw_if_index);
s = format (s, "payload %U ", format_gre_tunnel_type, t->type);
- s = format (s, "%U ", format_gre_tunnel_mode, t->mode);
+ s = format (s, "%U ", format_tunnel_mode, t->mode);
if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
s = format (s, "session %d ", t->session_id);
if (!a->is_ipv6)
{
gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index,
- a->type, a->session_id, &key->gtk_v4);
+ a->type, a->mode, a->session_id, &key->gtk_v4);
p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4);
}
else
{
gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index,
- a->type, a->session_id, &key->gtk_v6);
+ a->type, a->mode, a->session_id, &key->gtk_v6);
p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6);
}
{
gre_main_t *gm = &gre_main;
- t->key = clib_mem_alloc (sizeof (*t->key));
- clib_memcpy (t->key, key, sizeof (*key));
-
if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
{
- hash_set_mem (gm->tunnel_by_key6, &t->key->gtk_v6, t->dev_instance);
+ hash_set_mem_alloc (&gm->tunnel_by_key6, &key->gtk_v6, t->dev_instance);
}
else
{
- hash_set_mem (gm->tunnel_by_key4, &t->key->gtk_v4, t->dev_instance);
+ hash_set_mem_alloc (&gm->tunnel_by_key4, &key->gtk_v4, t->dev_instance);
}
}
static void
-gre_tunnel_db_remove (gre_tunnel_t * t)
+gre_tunnel_db_remove (gre_tunnel_t * t, gre_tunnel_key_t * key)
{
gre_main_t *gm = &gre_main;
if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
{
- hash_unset_mem (gm->tunnel_by_key6, &t->key->gtk_v6);
+ hash_unset_mem_free (&gm->tunnel_by_key6, &key->gtk_v6);
}
else
{
- hash_unset_mem (gm->tunnel_by_key4, &t->key->gtk_v4);
+ hash_unset_mem_free (&gm->tunnel_by_key4, &key->gtk_v4);
}
-
- clib_mem_free (t->key);
- t->key = NULL;
}
/**
}
}
+static void
+gre_nhrp_mk_key (const gre_tunnel_t * t,
+ const nhrp_entry_t * ne, gre_tunnel_key_t * key)
+{
+ const fib_prefix_t *nh;
+
+ nh = nhrp_entry_get_nh (ne);
+
+ /* construct the key using mode P2P so it can be found in the DP */
+ if (FIB_PROTOCOL_IP4 == nh->fp_proto)
+ gre_mk_key4 (t->tunnel_src.ip4,
+ nh->fp_addr.ip4,
+ nhrp_entry_get_fib_index (ne),
+ t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v4);
+ else
+ gre_mk_key6 (&t->tunnel_src.ip6,
+ &nh->fp_addr.ip6,
+ nhrp_entry_get_fib_index (ne),
+ t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v6);
+}
+
+/**
+ * An NHRP entry has been added
+ */
+static void
+gre_nhrp_entry_added (const nhrp_entry_t * ne)
+{
+ gre_main_t *gm = &gre_main;
+ const ip46_address_t *nh;
+ gre_tunnel_key_t key;
+ gre_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = nhrp_entry_get_sw_if_index (ne);
+ if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
+ return;
+
+ t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
+
+ if (INDEX_INVALID == t_idx)
+ return;
+
+ /* entry has been added on an interface for which there is a GRE tunnel */
+ t = pool_elt_at_index (gm->tunnels, t_idx);
+
+ if (t->mode != TUNNEL_MODE_MP)
+ return;
+
+ /* the next-hop (underlay) of the NHRP entry will form part of the key for
+ * ingress lookup to match packets to this interface */
+ gre_nhrp_mk_key (t, ne, &key);
+ gre_tunnel_db_add (t, &key);
+
+ /* update the rewrites for each of the adjacencies for this peer (overlay)
+ * using the next-hop (underlay) */
+ mgre_walk_ctx_t ctx = {
+ .t = t,
+ .ne = ne
+ };
+ nh = nhrp_entry_get_peer (ne);
+ adj_nbr_walk_nh (nhrp_entry_get_sw_if_index (ne),
+ (ip46_address_is_ip4 (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6), nh, mgre_mk_complete_walk, &ctx);
+}
+
+static void
+gre_nhrp_entry_deleted (const nhrp_entry_t * ne)
+{
+ gre_main_t *gm = &gre_main;
+ const ip46_address_t *nh;
+ gre_tunnel_key_t key;
+ gre_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = nhrp_entry_get_sw_if_index (ne);
+ if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
+ return;
+
+ t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
+
+ if (INDEX_INVALID == t_idx)
+ return;
+
+ t = pool_elt_at_index (gm->tunnels, t_idx);
+
+ /* remove the next-hop as an ingress lookup key */
+ gre_nhrp_mk_key (t, ne, &key);
+ gre_tunnel_db_remove (t, &key);
+
+ nh = nhrp_entry_get_peer (ne);
+
+ /* make all the adjacencies incomplete */
+ adj_nbr_walk_nh (nhrp_entry_get_sw_if_index (ne),
+ (ip46_address_is_ip4 (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6), nh, mgre_mk_incomplete_walk, t);
+}
+
+static walk_rc_t
+gre_tunnel_delete_nhrp_walk (index_t nei, void *ctx)
+{
+ gre_tunnel_t *t = ctx;
+ gre_tunnel_key_t key;
+
+ gre_nhrp_mk_key (t, nhrp_entry_get (nei), &key);
+ gre_tunnel_db_remove (t, &key);
+
+ return (WALK_CONTINUE);
+}
+
+static walk_rc_t
+gre_tunnel_add_nhrp_walk (index_t nei, void *ctx)
+{
+ gre_tunnel_t *t = ctx;
+ gre_tunnel_key_t key;
+
+ gre_nhrp_mk_key (t, nhrp_entry_get (nei), &key);
+ gre_tunnel_db_add (t, &key);
+
+ return (WALK_CONTINUE);
+}
+
static int
vnet_gre_tunnel_add (vnet_gre_tunnel_add_del_args_t * a,
u32 outer_fib_index, u32 * sw_if_indexp)
t->type = a->type;
t->mode = a->mode;
+ t->flags = a->flags;
if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
t->session_id = a->session_id;
if (t->type == GRE_TUNNEL_TYPE_L3)
{
- if (t->mode == GRE_TUNNEL_MODE_P2P)
+ if (t->mode == TUNNEL_MODE_P2P)
hw_if_index =
vnet_register_interface (vnm, gre_device_class.index, t_idx,
gre_hw_interface_class.index, t_idx);
t->tunnel_dst.fp_addr = a->dst;
gre_tunnel_db_add (t, &key);
+
+ if (t->mode == TUNNEL_MODE_MP)
+ nhrp_walk_itf (t->sw_if_index, gre_tunnel_add_nhrp_walk, t);
+
if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
{
gre_sn_key_t skey;
if (NULL == t)
return VNET_API_ERROR_NO_SUCH_ENTRY;
+ if (t->mode == TUNNEL_MODE_MP)
+ nhrp_walk_itf (t->sw_if_index, gre_tunnel_delete_nhrp_walk, t);
+
sw_if_index = t->sw_if_index;
vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
}
hash_unset (gm->instance_used, t->user_instance);
- gre_tunnel_db_remove (t);
+ gre_tunnel_db_remove (t, &key);
pool_put (gm->tunnels, t);
if (sw_if_indexp)
if (a->session_id > GTK_SESSION_ID_MAX)
return VNET_API_ERROR_INVALID_SESSION_ID;
+ if (a->mode == TUNNEL_MODE_MP && !ip46_address_is_zero (&a->dst))
+ return (VNET_API_ERROR_INVALID_DST_ADDRESS);
+
if (a->is_add)
return (vnet_gre_tunnel_add (a, outer_fib_index, sw_if_indexp));
else
u32 instance = ~0;
u32 outer_table_id = 0;
gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3;
- gre_tunnel_mode_t t_mode = GRE_TUNNEL_MODE_P2P;
+ tunnel_mode_t t_mode = TUNNEL_MODE_P2P;
u32 session_id = 0;
int rv;
u8 is_add = 1;
else if (unformat (line_input, "outer-table-id %d", &outer_table_id))
;
else if (unformat (line_input, "multipoint"))
- t_mode = GRE_TUNNEL_MODE_MP;
+ t_mode = TUNNEL_MODE_MP;
else if (unformat (line_input, "teb"))
t_type = GRE_TUNNEL_TYPE_TEB;
else if (unformat (line_input, "erspan %d", &session_id))
goto done;
}
- if (t_mode != GRE_TUNNEL_MODE_MP && ip46_address_is_zero (&dst))
+ if (t_mode != TUNNEL_MODE_MP && ip46_address_is_zero (&dst))
{
error = clib_error_return (0, "destination address not specified");
goto done;
};
/* *INDENT-ON* */
+const static nhrp_vft_t gre_nhrp_vft = {
+ .nv_added = gre_nhrp_entry_added,
+ .nv_deleted = gre_nhrp_entry_deleted,
+};
+
/* force inclusion from application's main.c */
clib_error_t *
gre_interface_init (vlib_main_t * vm)
{
+ nhrp_register (&gre_nhrp_vft);
+
return (NULL);
}
Code Review / vpp.git / blobdiff