* limitations under the License.
*/
-#include <vnet/adj/adj.h>
+#include <vnet/adj/adj_mcast.h>
#include <vnet/adj/adj_internal.h>
#include <vnet/fib/fib_walk.h>
#include <vnet/ip/ip.h>
adj->rewrite_header.dst_mcast_mask = clib_host_to_net_u32(mask);
}
+/**
+ * adj_mcast_midchain_update_rewrite
+ *
+ * Update the adjacency's rewrite string. A NULL string implies the
+ * rewirte is reset (i.e. when ARP/ND etnry is gone).
+ * NB: the adj being updated may be handling traffic in the DP.
+ */
+void
+adj_mcast_midchain_update_rewrite (adj_index_t adj_index,
+ adj_midchain_fixup_t fixup,
+ adj_flags_t flags,
+ u8 *rewrite,
+ u8 offset,
+ u32 mask)
+{
+ ip_adjacency_t *adj;
+
+ ASSERT(ADJ_INDEX_INVALID != adj_index);
+
+ adj = adj_get(adj_index);
+
+ /*
+ * one time only update. since we don't support chainging the tunnel
+ * src,dst, this is all we need.
+ */
+ ASSERT(adj->lookup_next_index == IP_LOOKUP_NEXT_MCAST);
+ /*
+ * tunnels can always provide a rewrite.
+ */
+ ASSERT(NULL != rewrite);
+
+ adj_midchain_setup(adj_index, fixup, flags);
+
+ /*
+ * update the adj's rewrite string and build the arc
+ * from the rewrite node to the interface's TX node
+ */
+ adj_nbr_update_rewrite_internal(adj, IP_LOOKUP_NEXT_MCAST_MIDCHAIN,
+ adj_get_mcast_node(adj->ia_nh_proto),
+ vnet_tx_node_index_for_sw_interface(
+ vnet_get_main(),
+ adj->rewrite_header.sw_if_index),
+ rewrite);
+
+ /*
+ * set the fields corresponding to the mcast IP address rewrite
+ * The mask must be stored in network byte order, since the packet's
+ * IP address will also be in network order.
+ */
+ adj->rewrite_header.dst_mcast_offset = offset;
+ adj->rewrite_header.dst_mcast_mask = clib_host_to_net_u32(mask);
+}
+
void
adj_mcast_remove (fib_protocol_t proto,
u32 sw_if_index)
VNET_SW_INTERFACE_ADD_DEL_FUNCTION(adj_mcast_interface_delete);
+/**
+ * @brief Walk the multicast Adjacencies on a given interface
+ */
+void
+adj_mcast_walk (u32 sw_if_index,
+ fib_protocol_t proto,
+ adj_walk_cb_t cb,
+ void *ctx)
+{
+ if (vec_len(adj_mcasts[proto]) > sw_if_index)
+ {
+ if (ADJ_INDEX_INVALID != adj_mcasts[proto][sw_if_index])
+ {
+ cb(adj_mcasts[proto][sw_if_index], ctx);
+ }
+ }
+}
+
u8*
format_adj_mcast (u8* s, va_list *ap)
{
s = format(s, "%U-mcast: ",
format_fib_protocol, adj->ia_nh_proto);
+ if (adj->rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)
+ s = format(s, "[features] ");
s = format (s, "%U",
format_vnet_rewrite,
&adj->rewrite_header, sizeof (adj->rewrite_data), 0);
return (s);
}
+u8*
+format_adj_mcast_midchain (u8* s, va_list *ap)
+{
+ index_t index = va_arg(*ap, index_t);
+ CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
+ vnet_main_t * vnm = vnet_get_main();
+ ip_adjacency_t * adj = adj_get(index);
+
+ s = format(s, "%U-mcast-midchain: ",
+ format_fib_protocol, adj->ia_nh_proto);
+ s = format (s, "%U",
+ format_vnet_rewrite,
+ vnm->vlib_main, &adj->rewrite_header,
+ sizeof (adj->rewrite_data), 0);
+ s = format (s, "\n%Ustacked-on:\n%U%U",
+ format_white_space, indent,
+ format_white_space, indent+2,
+ format_dpo_id, &adj->sub_type.midchain.next_dpo, indent+2);
+
+ return (s);
+}
+
static void
adj_dpo_lock (dpo_id_t *dpo)
.dv_unlock = adj_dpo_unlock,
.dv_format = format_adj_mcast,
};
+const static dpo_vft_t adj_mcast_midchain_dpo_vft = {
+ .dv_lock = adj_dpo_lock,
+ .dv_unlock = adj_dpo_unlock,
+ .dv_format = format_adj_mcast_midchain,
+};
/**
* @brief The per-protocol VLIB graph nodes that are assigned to a mcast
[DPO_PROTO_MPLS] = NULL,
};
+/**
+ * @brief The per-protocol VLIB graph nodes that are assigned to a mcast
+ * object.
+ *
+ * this means that these graph nodes are ones from which a mcast is the
+ * parent object in the DPO-graph.
+ */
+const static char* const adj_mcast_midchain_ip4_nodes[] =
+{
+ "ip4-mcast-midchain",
+ NULL,
+};
+const static char* const adj_mcast_midchain_ip6_nodes[] =
+{
+ "ip6-mcast-midchain",
+ NULL,
+};
+
+const static char* const * const adj_mcast_midchain_nodes[DPO_PROTO_NUM] =
+{
+ [DPO_PROTO_IP4] = adj_mcast_midchain_ip4_nodes,
+ [DPO_PROTO_IP6] = adj_mcast_midchain_ip6_nodes,
+ [DPO_PROTO_MPLS] = NULL,
+};
+
/**
* @brief Return the size of the adj DB.
* This is only for testing purposes so an efficient implementation is not needed
void
adj_mcast_module_init (void)
{
- dpo_register(DPO_ADJACENCY_MCAST, &adj_mcast_dpo_vft, adj_mcast_nodes);
+ dpo_register(DPO_ADJACENCY_MCAST,
+ &adj_mcast_dpo_vft,
+ adj_mcast_nodes);
+ dpo_register(DPO_ADJACENCY_MCAST_MIDCHAIN,
+ &adj_mcast_midchain_dpo_vft,
+ adj_mcast_midchain_nodes);
}
Code Review / vpp.git / blobdiff