*/
#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
#include <vnet/gre/gre.h>
#include <vnet/ip/format.h>
-#include <vnet/fib/ip4_fib.h>
-#include <vnet/fib/ip6_fib.h>
+#include <vnet/fib/fib_table.h>
#include <vnet/adj/adj_midchain.h>
#include <vnet/adj/adj_nbr.h>
#include <vnet/mpls/mpls.h>
#include <vnet/l2/l2_input.h>
+#include <vnet/teib/teib.h>
-static const char *gre_tunnel_type_names[] = GRE_TUNNEL_TYPE_NAMES;
+u8 *
+format_gre_tunnel_type (u8 * s, va_list * args)
+{
+ gre_tunnel_type_t type = va_arg (*args, int);
+
+ switch (type)
+ {
+#define _(n, v) case GRE_TUNNEL_TYPE_##n: \
+ s = format (s, "%s", v); \
+ break;
+ foreach_gre_tunnel_type
+#undef _
+ }
+
+ return (s);
+}
static u8 *
format_gre_tunnel (u8 * s, va_list * args)
format_ip46_address, &t->tunnel_dst.fp_addr, IP46_TYPE_ANY,
t->outer_fib_index, t->sw_if_index);
- s = format (s, "payload %s ", gre_tunnel_type_names[t->type]);
+ s = format (s, "payload %U ", format_gre_tunnel_type, t->type);
+ 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_teib_mk_key (const gre_tunnel_t * t,
+ const teib_entry_t * ne, gre_tunnel_key_t * key)
+{
+ const fib_prefix_t *nh;
+
+ nh = teib_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,
+ teib_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,
+ teib_entry_get_fib_index (ne),
+ t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v6);
+}
+
+/**
+ * An NHRP entry has been added
+ */
+static void
+gre_teib_entry_added (const teib_entry_t * ne)
+{
+ gre_main_t *gm = &gre_main;
+ const ip_address_t *nh;
+ gre_tunnel_key_t key;
+ gre_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = teib_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_teib_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 = teib_entry_get_peer (ne);
+ adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
+ (AF_IP4 == ip_addr_version (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6),
+ &ip_addr_46 (nh), mgre_mk_complete_walk, &ctx);
+}
+
+static void
+gre_teib_entry_deleted (const teib_entry_t * ne)
+{
+ gre_main_t *gm = &gre_main;
+ const ip_address_t *nh;
+ gre_tunnel_key_t key;
+ gre_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = teib_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_teib_mk_key (t, ne, &key);
+ gre_tunnel_db_remove (t, &key);
+
+ nh = teib_entry_get_peer (ne);
+
+ /* make all the adjacencies incomplete */
+ adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
+ (AF_IP4 == ip_addr_version (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6),
+ &ip_addr_46 (nh), mgre_mk_incomplete_walk, t);
+}
+
+static walk_rc_t
+gre_tunnel_delete_teib_walk (index_t nei, void *ctx)
+{
+ gre_tunnel_t *t = ctx;
+ gre_tunnel_key_t key;
+
+ gre_teib_mk_key (t, teib_entry_get (nei), &key);
+ gre_tunnel_db_remove (t, &key);
+
+ return (WALK_CONTINUE);
+}
+
+static walk_rc_t
+gre_tunnel_add_teib_walk (index_t nei, void *ctx)
+{
+ gre_tunnel_t *t = ctx;
+ gre_tunnel_key_t key;
+
+ gre_teib_mk_key (t, teib_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->user_instance = u_idx; /* name */
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)
- hw_if_index = vnet_register_interface (vnm, gre_device_class.index, t_idx,
- gre_hw_interface_class.index,
- t_idx);
+ {
+ 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);
+ else
+ hw_if_index =
+ vnet_register_interface (vnm, gre_device_class.index, t_idx,
+ mgre_hw_interface_class.index, t_idx);
+ }
else
{
/* Default MAC address (d00b:eed0:0000 + sw_if_index) */
}
/* Set GRE tunnel interface output node (not used for L3 payload) */
- vnet_set_interface_output_node (vnm, hw_if_index, gre_encap_node.index);
+ if (GRE_TUNNEL_TYPE_ERSPAN == t->type)
+ vnet_set_interface_output_node (vnm, hw_if_index,
+ gre_erspan_encap_node.index);
+ else
+ vnet_set_interface_output_node (vnm, hw_if_index,
+ gre_teb_encap_node.index);
hi = vnet_get_hw_interface (vnm, hw_if_index);
sw_if_index = hi->sw_if_index;
t->tunnel_dst.fp_addr = a->dst;
gre_tunnel_db_add (t, &key);
+
+ if (t->mode == TUNNEL_MODE_MP)
+ teib_walk_itf (t->sw_if_index, gre_tunnel_add_teib_walk, t);
+
if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
{
gre_sn_key_t skey;
if (sw_if_indexp)
*sw_if_indexp = sw_if_index;
+ /* register gre46-input nodes */
+ ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index);
+ ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index);
+
return 0;
}
if (NULL == t)
return VNET_API_ERROR_NO_SUCH_ENTRY;
+ if (t->mode == TUNNEL_MODE_MP)
+ teib_walk_itf (t->sw_if_index, gre_tunnel_delete_teib_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)
{
u32 outer_fib_index;
- if (!a->is_ipv6)
- outer_fib_index = ip4_fib_index_from_table_id (a->outer_fib_id);
- else
- outer_fib_index = ip6_fib_index_from_table_id (a->outer_fib_id);
+ outer_fib_index = fib_table_find ((a->is_ipv6 ?
+ FIB_PROTOCOL_IP6 :
+ FIB_PROTOCOL_IP4), a->outer_table_id);
if (~0 == outer_fib_index)
return VNET_API_ERROR_NO_SUCH_FIB;
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
{
unformat_input_t _line_input, *line_input = &_line_input;
vnet_gre_tunnel_add_del_args_t _a, *a = &_a;
- ip46_address_t src, dst;
+ ip46_address_t src = ip46_address_initializer, dst =
+ ip46_address_initializer;
u32 instance = ~0;
- u32 outer_fib_id = 0;
+ u32 outer_table_id = 0;
gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3;
+ tunnel_mode_t t_mode = TUNNEL_MODE_P2P;
u32 session_id = 0;
int rv;
- u32 num_m_args = 0;
u8 is_add = 1;
u32 sw_if_index;
clib_error_t *error = NULL;
- u8 ipv4_set = 0;
- u8 ipv6_set = 0;
/* Get a line of input. */
if (!unformat_user (input, unformat_line_input, line_input))
is_add = 0;
else if (unformat (line_input, "instance %d", &instance))
;
- else
- if (unformat (line_input, "src %U", unformat_ip4_address, &src.ip4))
- {
- num_m_args++;
- ipv4_set = 1;
- }
- else
- if (unformat (line_input, "dst %U", unformat_ip4_address, &dst.ip4))
- {
- num_m_args++;
- ipv4_set = 1;
- }
- else
- if (unformat (line_input, "src %U", unformat_ip6_address, &src.ip6))
- {
- num_m_args++;
- ipv6_set = 1;
- }
- else
- if (unformat (line_input, "dst %U", unformat_ip6_address, &dst.ip6))
- {
- num_m_args++;
- ipv6_set = 1;
- }
- else if (unformat (line_input, "outer-fib-id %d", &outer_fib_id))
+ else if (unformat (line_input, "src %U", unformat_ip46_address, &src))
;
+ else if (unformat (line_input, "dst %U", unformat_ip46_address, &dst))
+ ;
+ else if (unformat (line_input, "outer-table-id %d", &outer_table_id))
+ ;
+ else if (unformat (line_input, "multipoint"))
+ 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))
}
}
- if (num_m_args < 2)
+ if (ip46_address_is_equal (&src, &dst))
{
- error = clib_error_return (0, "mandatory argument(s) missing");
+ error = clib_error_return (0, "src and dst are identical");
goto done;
}
- if ((ipv4_set && memcmp (&src.ip4, &dst.ip4, sizeof (src.ip4)) == 0) ||
- (ipv6_set && memcmp (&src.ip6, &dst.ip6, sizeof (src.ip6)) == 0))
+ if (t_mode != TUNNEL_MODE_MP && ip46_address_is_zero (&dst))
{
- error = clib_error_return (0, "src and dst are identical");
+ error = clib_error_return (0, "destination address not specified");
goto done;
}
- if (ipv4_set && ipv6_set)
- return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
+ if (ip46_address_is_zero (&src))
+ {
+ error = clib_error_return (0, "source address not specified");
+ goto done;
+ }
- if ((ipv4_set && memcmp (&dst.ip4, &zero_addr.ip4, sizeof (dst.ip4)) == 0)
- || (ipv6_set
- && memcmp (&dst.ip6, &zero_addr.ip6, sizeof (dst.ip6)) == 0))
+ if (ip46_address_is_ip4 (&src) != ip46_address_is_ip4 (&dst))
{
- error = clib_error_return (0, "dst address cannot be zero");
+ error =
+ clib_error_return (0, "src and dst address must be the same AF");
goto done;
}
clib_memset (a, 0, sizeof (*a));
a->is_add = is_add;
- a->outer_fib_id = outer_fib_id;
+ a->outer_table_id = outer_table_id;
a->type = t_type;
+ a->mode = t_mode;
a->session_id = session_id;
- a->is_ipv6 = ipv6_set;
+ a->is_ipv6 = !ip46_address_is_ip4 (&src);
a->instance = instance;
- if (!ipv6_set)
- {
- clib_memcpy (&a->src.ip4, &src.ip4, sizeof (src.ip4));
- clib_memcpy (&a->dst.ip4, &dst.ip4, sizeof (dst.ip4));
- }
- else
- {
- clib_memcpy (&a->src.ip6, &src.ip6, sizeof (src.ip6));
- clib_memcpy (&a->dst.ip6, &dst.ip6, sizeof (dst.ip6));
- }
+ clib_memcpy (&a->src, &src, sizeof (a->src));
+ clib_memcpy (&a->dst, &dst, sizeof (a->dst));
rv = vnet_gre_tunnel_add_del (a, &sw_if_index);
error = clib_error_return (0, "GRE tunnel already exists...");
goto done;
case VNET_API_ERROR_NO_SUCH_FIB:
- error = clib_error_return (0, "outer fib ID %d doesn't exist\n",
- outer_fib_id);
+ error = clib_error_return (0, "outer table ID %d doesn't exist\n",
+ outer_table_id);
goto done;
case VNET_API_ERROR_NO_SUCH_ENTRY:
error = clib_error_return (0, "GRE tunnel doesn't exist");
VLIB_CLI_COMMAND (create_gre_tunnel_command, static) = {
.path = "create gre tunnel",
.short_help = "create gre tunnel src <addr> dst <addr> [instance <n>] "
- "[outer-fib-id <fib>] [teb | erspan <session-id>] [del]",
+ "[outer-fib-id <fib>] [teb | erspan <session-id>] [del] "
+ "[multipoint]",
.function = create_gre_tunnel_command_fn,
};
/* *INDENT-ON* */
};
/* *INDENT-ON* */
+const static teib_vft_t gre_teib_vft = {
+ .nv_added = gre_teib_entry_added,
+ .nv_deleted = gre_teib_entry_deleted,
+};
+
/* force inclusion from application's main.c */
clib_error_t *
gre_interface_init (vlib_main_t * vm)
{
+ teib_register (&gre_teib_vft);
+
return (NULL);
}