#include <vnet/ipip/ipip.h>
#include <vnet/vnet.h>
#include <vnet/adj/adj_nbr.h>
+#include <vnet/adj/adj_midchain.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/fib/ip6_fib.h>
#include <vnet/ip/format.h>
if ((vnet_hw_interface_get_flags (vnet_get_main (), t->hw_if_index) &
VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
{
- adj_nbr_midchain_unstack (ai);
- return;
+ adj_midchain_delegate_unstack (ai);
}
-
- dpo_id_t tmp = DPO_INVALID;
- fib_forward_chain_type_t fib_fwd =
- t->transport ==
- IPIP_TRANSPORT_IP6 ? FIB_FORW_CHAIN_TYPE_UNICAST_IP6 :
- FIB_FORW_CHAIN_TYPE_UNICAST_IP4;
-
- fib_entry_contribute_forwarding (t->p2p.fib_entry_index, fib_fwd, &tmp);
- if (DPO_LOAD_BALANCE == tmp.dpoi_type)
+ else
{
- /*
- * post IPIP rewrite we will load-balance. However, the IPIP encap
- * is always the same for this adjacency/tunnel and hence the IP/IPIP
- * src,dst hash is always the same result too. So we do that hash now and
- * stack on the choice.
- * If the choice is an incomplete adj then we will need a poke when
- * it becomes complete. This happens since the adj update walk propagates
- * as far a recursive paths.
- */
- const dpo_id_t *choice;
- load_balance_t *lb;
- int hash;
-
- lb = load_balance_get (tmp.dpoi_index);
-
- if (fib_fwd == FIB_FORW_CHAIN_TYPE_UNICAST_IP4)
- hash = ip4_compute_flow_hash ((ip4_header_t *) adj_get_rewrite (ai),
- lb->lb_hash_config);
- else
- hash = ip6_compute_flow_hash ((ip6_header_t *) adj_get_rewrite (ai),
- lb->lb_hash_config);
- choice =
- load_balance_get_bucket_i (lb, hash & lb->lb_n_buckets_minus_1);
- dpo_copy (&tmp, choice);
+ /* *INDENT-OFF* */
+ fib_prefix_t dst = {
+ .fp_len = t->transport == IPIP_TRANSPORT_IP6 ? 128 : 32,
+ .fp_proto = (t->transport == IPIP_TRANSPORT_IP6 ?
+ FIB_PROTOCOL_IP6 :
+ FIB_PROTOCOL_IP4),
+ .fp_addr = t->tunnel_dst
+ };
+ /* *INDENT-ON* */
+
+ adj_midchain_delegate_stack (ai, t->fib_index, &dst);
}
-
- adj_nbr_midchain_stack (ai, &tmp);
- dpo_reset (&tmp);
}
static adj_walk_rc_t
void
ipip_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
{
- ipip_tunnel_t *t;
adj_midchain_fixup_t f;
+ ipip_tunnel_t *t;
+ adj_flags_t af;
t = ipip_tunnel_db_find_by_sw_if_index (sw_if_index);
if (!t)
return;
f = t->transport == IPIP_TRANSPORT_IP6 ? ipip6_fixup : ipip4_fixup;
-
- adj_nbr_midchain_update_rewrite (ai, f, t,
- (VNET_LINK_ETHERNET ==
- adj_get_link_type (ai) ?
- ADJ_FLAG_MIDCHAIN_NO_COUNT :
- ADJ_FLAG_NONE), ipip_build_rewrite (vnm,
- sw_if_index,
- adj_get_link_type
- (ai),
- NULL));
+ af = ADJ_FLAG_MIDCHAIN_IP_STACK;
+ if (VNET_LINK_ETHERNET == adj_get_link_type (ai))
+ af |= ADJ_FLAG_MIDCHAIN_NO_COUNT;
+
+ adj_nbr_midchain_update_rewrite (ai, f, t, af,
+ ipip_build_rewrite (vnm,
+ sw_if_index,
+ adj_get_link_type
+ (ai), NULL));
ipip_tunnel_stack (ai);
}
t->key = NULL;
}
-static ipip_tunnel_t *
-ipip_tunnel_from_fib_node (fib_node_t * node)
-{
- ipip_main_t *gm = &ipip_main;
- ASSERT (gm->fib_node_type == node->fn_type);
- return ((ipip_tunnel_t *) (((char *) node) -
- offsetof (ipip_tunnel_t, p2p.node)));
-}
-
-static fib_node_back_walk_rc_t
-ipip_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx)
-{
- ipip_tunnel_restack (ipip_tunnel_from_fib_node (node));
-
- return (FIB_NODE_BACK_WALK_CONTINUE);
-}
-
-static fib_node_t *
-ipip_tunnel_fib_node_get (fib_node_index_t index)
-{
- ipip_tunnel_t *gt;
- ipip_main_t *gm;
-
- gm = &ipip_main;
- gt = pool_elt_at_index (gm->tunnels, index);
-
- return (>->p2p.node);
-}
-
-static void
-ipip_tunnel_last_lock_gone (fib_node_t * node)
-{
- /*
- * The MPLS IPIP 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 IPIP tunnels
- * for participation in the FIB object graph.
- */
-const static fib_node_vft_t ipip_vft = {
- .fnv_get = ipip_tunnel_fib_node_get,
- .fnv_last_lock = ipip_tunnel_last_lock_gone,
- .fnv_back_walk = ipip_tunnel_back_walk,
-};
-
-static void
-ipip_fib_add (ipip_tunnel_t * t)
-{
- ipip_main_t *gm = &ipip_main;
- fib_prefix_t dst = {.fp_len = t->transport == IPIP_TRANSPORT_IP6 ? 128 : 32,
- .fp_proto =
- t->transport ==
- IPIP_TRANSPORT_IP6 ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4,
- .fp_addr = t->tunnel_dst
- };
-
- t->p2p.fib_entry_index =
- fib_table_entry_special_add (t->fib_index, &dst, FIB_SOURCE_RR,
- FIB_ENTRY_FLAG_NONE);
- t->p2p.sibling_index =
- fib_entry_child_add (t->p2p.fib_entry_index, gm->fib_node_type,
- t->dev_instance);
-}
-
-static void
-ipip_fib_delete (ipip_tunnel_t * t)
-{
- fib_entry_child_remove (t->p2p.fib_entry_index, t->p2p.sibling_index);
- fib_table_entry_delete_index (t->p2p.fib_entry_index, FIB_SOURCE_RR);
- fib_node_deinit (&t->p2p.node);
-}
-
int
ipip_add_tunnel (ipip_transport_t transport,
u32 instance, ip46_address_t * src, ip46_address_t * dst,
t->dev_instance = t_idx; /* actual */
t->user_instance = u_idx; /* name */
- fib_node_init (&t->p2p.node, gm->fib_node_type);
hw_if_index = vnet_register_interface (vnm, ipip_device_class.index, t_idx,
ipip_hw_interface_class.index,
ipip_tunnel_db_add (t, &key);
- /*
- * 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
- */
- ipip_fib_add (t);
if (sw_if_indexp)
*sw_if_indexp = sw_if_index;
vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
vnet_delete_hw_interface (vnm, t->hw_if_index);
- ipip_fib_delete (t);
hash_unset (gm->instance_used, t->user_instance);
ipip_tunnel_db_remove (t);
pool_put (gm->tunnels, t);
gm->vnet_main = vnet_get_main ();
gm->tunnel_by_key =
hash_create_mem (0, sizeof (ipip_tunnel_key_t), sizeof (uword));
- gm->fib_node_type = fib_node_register_new_type (&ipip_vft);
return 0;
}
Code Review / vpp.git / blobdiff