*/
#include <vnet/vxlan/vxlan.h>
#include <vnet/ip/format.h>
+#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_table.h>
/**
* @file
vxlan_main_t vxlan_main;
-static u8 * format_decap_next (u8 * s, va_list * args)
-{
- u32 next_index = va_arg (*args, u32);
-
- switch (next_index)
- {
- case VXLAN_INPUT_NEXT_DROP:
- return format (s, "drop");
- case VXLAN_INPUT_NEXT_L2_INPUT:
- return format (s, "l2");
- case VXLAN_INPUT_NEXT_IP4_INPUT:
- return format (s, "ip4");
- case VXLAN_INPUT_NEXT_IP6_INPUT:
- return format (s, "ip6");
- default:
- return format (s, "unknown %d", next_index);
- }
- return s;
-}
-
u8 * format_vxlan_tunnel (u8 * s, va_list * args)
{
vxlan_tunnel_t * t = va_arg (*args, vxlan_tunnel_t *);
vxlan_main_t * ngm = &vxlan_main;
s = format (s,
- "[%d] %U (src) %U (dst) vni %d encap_fib_index %d",
+ "[%d] src %U dst %U vni %d encap_fib_index %d sw_if_index %d "
+ "fib_entry_index %d\n",
t - ngm->tunnels,
format_ip46_address, &t->src, IP46_TYPE_ANY,
format_ip46_address, &t->dst, IP46_TYPE_ANY,
- t->vni,
- t->encap_fib_index);
- s = format (s, " decap_next %U\n", format_decap_next, t->decap_next_index);
+ t->vni, t->encap_fib_index, t->sw_if_index, t->fib_entry_index);
return s;
}
.build_rewrite = default_build_rewrite,
};
+
+static vxlan_tunnel_t *
+vxlan_tunnel_from_fib_node (fib_node_t *node)
+{
+#if (CLIB_DEBUG > 0)
+ ASSERT(FIB_NODE_TYPE_VXLAN_TUNNEL == node->fn_type);
+#endif
+ return ((vxlan_tunnel_t*) (((char*)node) -
+ STRUCT_OFFSET_OF(vxlan_tunnel_t, node)));
+}
+
+/**
+ * Function definition to backwalk a FIB node -
+ * Here we will restack the new dpo of VXLAN DIP to encap node.
+ */
+static fib_node_back_walk_rc_t
+vxlan_tunnel_back_walk (fib_node_t *node,
+ fib_node_back_walk_ctx_t *ctx)
+{
+ vxlan_tunnel_t *t = vxlan_tunnel_from_fib_node(node);
+ dpo_id_t dpo = DPO_INVALID;
+
+ if (ip46_address_is_ip4(&t->dst)) {
+ fib_entry_contribute_forwarding
+ (t->fib_entry_index, FIB_FORW_CHAIN_TYPE_UNICAST_IP4, &dpo);
+ dpo_stack_from_node
+ (vxlan4_encap_node.index, &t->next_dpo, &dpo);
+ } else {
+ fib_entry_contribute_forwarding
+ (t->fib_entry_index, FIB_FORW_CHAIN_TYPE_UNICAST_IP6, &dpo);
+ dpo_stack_from_node
+ (vxlan6_encap_node.index, &t->next_dpo, &dpo);
+ }
+ dpo_reset(&dpo);
+
+ return (FIB_NODE_BACK_WALK_CONTINUE);
+}
+
+/**
+ * Function definition to get a FIB node from its index
+ */
+static fib_node_t*
+vxlan_tunnel_fib_node_get (fib_node_index_t index)
+{
+ vxlan_tunnel_t * t;
+ vxlan_main_t * vxm = &vxlan_main;
+
+ t = pool_elt_at_index(vxm->tunnels, index);
+
+ return (&t->node);
+}
+
+/**
+ * Function definition to inform the FIB node that its last lock has gone.
+ */
+static void
+vxlan_tunnel_last_lock_gone (fib_node_t *node)
+{
+ /*
+ * The VXLAN tunnel is a root of the graph. As such
+ * it never has children and thus is never locked.
+ */
+ ASSERT(0);
+}
+
+/*
+ * Virtual function table registered by VXLAN tunnels
+ * for participation in the FIB object graph.
+ */
+const static fib_node_vft_t vxlan_vft = {
+ .fnv_get = vxlan_tunnel_fib_node_get,
+ .fnv_last_lock = vxlan_tunnel_last_lock_gone,
+ .fnv_back_walk = vxlan_tunnel_back_walk,
+};
+
+
#define foreach_copy_field \
_(vni) \
-_(encap_fib_index) \
-_(decap_next_index)
+_(encap_fib_index)
#define foreach_copy_ipv4 { \
_(src.ip4.as_u32) \
vxlan_main_t * vxm = &vxlan_main;
vxlan_tunnel_t *t = 0;
vnet_main_t * vnm = vxm->vnet_main;
- ip4_main_t * im4 = &ip4_main;
- ip6_main_t * im6 = &ip6_main;
vnet_hw_interface_t * hi;
uword * p;
u32 hw_if_index = ~0;
int rv;
vxlan4_tunnel_key_t key4;
vxlan6_tunnel_key_t key6;
+ u32 is_ip6 = a->is_ip6;
- if (!a->is_ip6) {
+ if (!is_ip6) {
key4.src = a->dst.ip4.as_u32; /* decap src in key is encap dst in config */
key4.vni = clib_host_to_net_u32 (a->vni << 8);
if (a->is_add)
{
+ l2input_main_t * l2im = &l2input_main;
+
/* adding a tunnel: tunnel must not already exist */
if (p)
return VNET_API_ERROR_TUNNEL_EXIST;
- if (a->decap_next_index == ~0)
- a->decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT;
-
- if (a->decap_next_index >= VXLAN_INPUT_N_NEXT)
- return VNET_API_ERROR_INVALID_DECAP_NEXT;
-
pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES);
memset (t, 0, sizeof (*t));
/* copy from arg structure */
#define _(x) t->x = a->x;
foreach_copy_field;
- if (!a->is_ip6) foreach_copy_ipv4
- else foreach_copy_ipv6
+ if (!is_ip6) foreach_copy_ipv4
+ else foreach_copy_ipv6
#undef _
/* copy the key */
- if (a->is_ip6)
+ if (is_ip6)
{
t->key6 = clib_mem_alloc (sizeof(vxlan6_tunnel_key_t));
clib_memcpy (t->key6, &key6, sizeof(key6));
t->key4 = 0; /* not yet used */
}
- if (!a->is_ip6) t->flags |= VXLAN_TUNNEL_IS_IPV4;
-
- if (!a->is_ip6) {
+ if (!is_ip6) {
rv = vxlan4_rewrite (t);
} else {
rv = vxlan6_rewrite (t);
return rv;
}
- if (!a->is_ip6)
+ if (!is_ip6)
hash_set (vxm->vxlan4_tunnel_by_key, key4.as_u64, t - vxm->tunnels);
else
hash_set_mem (vxm->vxlan6_tunnel_by_key, t->key6, t - vxm->tunnels);
(vnm, vxlan_device_class.index, t - vxm->tunnels,
vxlan_hw_class.index, t - vxm->tunnels);
hi = vnet_get_hw_interface (vnm, hw_if_index);
- hi->output_node_index = vxlan_encap_node.index;
}
t->hw_if_index = hw_if_index;
vec_validate_init_empty (vxm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
vxm->tunnel_index_by_sw_if_index[sw_if_index] = t - vxm->tunnels;
- if (a->decap_next_index == VXLAN_INPUT_NEXT_L2_INPUT)
- {
- l2input_main_t * l2im = &l2input_main;
- /* setup l2 input config with l2 feature and bd 0 to drop packet */
- vec_validate (l2im->configs, sw_if_index);
- l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
- l2im->configs[sw_if_index].bd_index = 0;
- }
+ /* setup l2 input config with l2 feature and bd 0 to drop packet */
+ vec_validate (l2im->configs, sw_if_index);
+ l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
+ l2im->configs[sw_if_index].bd_index = 0;
vnet_sw_interface_set_flags (vnm, sw_if_index,
VNET_SW_INTERFACE_FLAG_ADMIN_UP);
- if (!a->is_ip6) {
- vec_validate (im4->fib_index_by_sw_if_index, sw_if_index);
- im4->fib_index_by_sw_if_index[sw_if_index] = t->encap_fib_index;
- ip4_sw_interface_enable_disable(sw_if_index, 1);
- } else {
- vec_validate (im6->fib_index_by_sw_if_index, sw_if_index);
- im6->fib_index_by_sw_if_index[sw_if_index] = t->encap_fib_index;
- ip6_sw_interface_enable_disable(sw_if_index, 1);
- }
+ /*
+ * source the FIB entry for the tunnel's destination
+ * and become a child thereof. The tunnel will then get poked
+ * when the forwarding for the entry updates, and the tunnel can
+ * re-stack accordingly
+ */
+ fib_node_init(&t->node, FIB_NODE_TYPE_VXLAN_TUNNEL);
+ if (!is_ip6)
+ {
+ dpo_id_t dpo = DPO_INVALID;
+ const fib_prefix_t tun_dst_pfx =
+ {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr =
+ {
+ .ip4 = t->dst.ip4,
+ }
+ };
+
+ t->fib_entry_index = fib_table_entry_special_add
+ (t->encap_fib_index, &tun_dst_pfx,
+ FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE, ADJ_INDEX_INVALID);
+ t->sibling_index = fib_entry_child_add
+ (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_TUNNEL, t - vxm->tunnels);
+ fib_entry_contribute_forwarding
+ (t->fib_entry_index, FIB_FORW_CHAIN_TYPE_UNICAST_IP4, &dpo);
+ dpo_stack_from_node (vxlan4_encap_node.index, &t->next_dpo, &dpo);
+ dpo_reset(&dpo);
+
+ /* Set vxlan tunnel output node to ip4 version */
+ hi->output_node_index = vxlan4_encap_node.index;
+ }
+ else
+ {
+ dpo_id_t dpo = DPO_INVALID;
+ const fib_prefix_t tun_dst_pfx =
+ {
+ .fp_len = 128,
+ .fp_proto = FIB_PROTOCOL_IP6,
+ .fp_addr =
+ {
+ .ip6 = t->dst.ip6,
+ }
+ };
+
+ t->fib_entry_index = fib_table_entry_special_add
+ (t->encap_fib_index, &tun_dst_pfx,
+ FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE, ADJ_INDEX_INVALID);
+ t->sibling_index = fib_entry_child_add
+ (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_TUNNEL, t - vxm->tunnels);
+ fib_entry_contribute_forwarding
+ (t->fib_entry_index, FIB_FORW_CHAIN_TYPE_UNICAST_IP6, &dpo);
+ dpo_stack_from_node
+ (vxlan6_encap_node.index, &t->next_dpo, &dpo);
+ dpo_reset(&dpo);
+
+ /* Set vxlan tunnel output node to ip6 version */
+ hi->output_node_index = vxlan6_encap_node.index;
+ }
}
else
{
vxm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0;
- if (!a->is_ip6)
+ fib_entry_child_remove(t->fib_entry_index, t->sibling_index);
+ fib_table_entry_delete_index(t->fib_entry_index, FIB_SOURCE_RR);
+ fib_node_deinit(&t->node);
+
+ if (!is_ip6)
{
hash_unset (vxm->vxlan4_tunnel_by_key, key4.as_u64);
- ip4_sw_interface_enable_disable(t->sw_if_index, 1);
}
else
{
hash_unset_mem (vxm->vxlan6_tunnel_by_key, t->key6);
clib_mem_free (t->key6);
- ip6_sw_interface_enable_disable(t->sw_if_index, 1);
}
vec_free (t->rewrite);
pool_put (vxm->tunnels, t);
if (unformat (input, "l2"))
*result = VXLAN_INPUT_NEXT_L2_INPUT;
- else if (unformat (input, "drop"))
- *result = VXLAN_INPUT_NEXT_DROP;
- else if (unformat (input, "ip4"))
- *result = VXLAN_INPUT_NEXT_IP4_INPUT;
- else if (unformat (input, "ip6"))
- *result = VXLAN_INPUT_NEXT_IP6_INPUT;
else if (unformat (input, "%d", &tmp))
*result = tmp;
else
{
case 0:
if (is_add)
- vlib_cli_output(vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main(), sw_if_index);
+ vlib_cli_output(vm, "%U\n", format_vnet_sw_if_index_name,
+ vnet_get_main(), sw_if_index);
break;
- case VNET_API_ERROR_INVALID_DECAP_NEXT:
- return clib_error_return (0, "invalid decap-next...");
case VNET_API_ERROR_TUNNEL_EXIST:
return clib_error_return (0, "tunnel already exists...");
*
* @cliexpar
* Example of how to create a VXLAN Tunnel:
- * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7 decap-next l2}
+ * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7}
* Example of how to delete a VXLAN Tunnel:
* @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del}
?*/
.path = "create vxlan tunnel",
.short_help =
"create vxlan tunnel src <local-vtep-addr> dst <remote-vtep-addr> vni <nn>"
- " [encap-vrf-id <nn>] [decap-next [l2|ip4|ip6]] [del]",
+ " [encap-vrf-id <nn>]",
.function = vxlan_add_del_tunnel_command_fn,
};
/* *INDENT-ON* */
* @cliexpar
* Example of how to display the VXLAN Tunnel entries:
* @cliexstart{show vxlan tunnel}
- * [0] 10.0.3.1 (src) 10.0.3.3 (dst) vni 13 encap_fib_index 1 decap_next l2
+ * [0] src 10.0.3.1 dst 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5
* @cliexend
?*/
/* *INDENT-OFF* */
vxlan4_input_node.index, /* is_ip4 */ 1);
udp_register_dst_port (vm, UDP_DST_PORT_vxlan6,
vxlan6_input_node.index, /* is_ip4 */ 0);
+
+ fib_node_register_type(FIB_NODE_TYPE_VXLAN_TUNNEL, &vxlan_vft);
+
return 0;
}
Code Review / vpp.git / blobdiff