diff options
Diffstat (limited to 'vnet/vnet/adj/adj_glean.c')
| -rw-r--r-- | vnet/vnet/adj/adj_glean.c | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/vnet/vnet/adj/adj_glean.c b/vnet/vnet/adj/adj_glean.c deleted file mode 100644 index 8d86e2a9f00..00000000000 --- a/vnet/vnet/adj/adj_glean.c +++ /dev/null @@ -1,285 +0,0 @@ -/* - * Copyright (c) 2016 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <vnet/adj/adj.h> -#include <vnet/adj/adj_internal.h> -#include <vnet/fib/fib_walk.h> - -/* - * The 'DB' of all glean adjs. - * There is only one glean per-interface per-protocol, so this is a per-interface - * vector - */ -static adj_index_t *adj_gleans[FIB_PROTOCOL_MAX]; - -static inline vlib_node_registration_t* -adj_get_glean_node (fib_protocol_t proto) -{ - switch (proto) { - case FIB_PROTOCOL_IP4: - return (&ip4_glean_node); - case FIB_PROTOCOL_IP6: - return (&ip6_glean_node); - case FIB_PROTOCOL_MPLS: - break; - } - ASSERT(0); - return (NULL); -} - -/* - * adj_glean_add_or_lock - * - * The next_hop address here is used for source address selection in the DP. - * The glean adj is added to an interface's connected prefix, the next-hop - * passed here is the local prefix on the same interface. - */ -adj_index_t -adj_glean_add_or_lock (fib_protocol_t proto, - u32 sw_if_index, - const ip46_address_t *nh_addr) -{ - ip_adjacency_t * adj; - - vec_validate_init_empty(adj_gleans[proto], sw_if_index, ADJ_INDEX_INVALID); - - if (ADJ_INDEX_INVALID == adj_gleans[proto][sw_if_index]) - { - adj = adj_alloc(proto); - - adj->lookup_next_index = IP_LOOKUP_NEXT_GLEAN; - adj->ia_nh_proto = proto; - adj_gleans[proto][sw_if_index] = adj_get_index(adj); - - if (NULL != nh_addr) - { - adj->sub_type.glean.receive_addr = *nh_addr; - } - - adj->rewrite_header.data_bytes = 0; - - vnet_rewrite_for_sw_interface(vnet_get_main(), - adj_fib_proto_2_nd(proto), - sw_if_index, - adj_get_glean_node(proto)->index, - VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST, - &adj->rewrite_header, - sizeof (adj->rewrite_data)); - } - else - { - adj = adj_get(adj_gleans[proto][sw_if_index]); - } - - adj_lock(adj_get_index(adj)); - - return (adj_get_index(adj)); -} - -void -adj_glean_remove (fib_protocol_t proto, - u32 sw_if_index) -{ - ASSERT(sw_if_index < vec_len(adj_gleans[proto])); - - adj_gleans[proto][sw_if_index] = ADJ_INDEX_INVALID; -} - -static clib_error_t * -adj_glean_interface_state_change (vnet_main_t * vnm, - u32 sw_if_index, - u32 flags) -{ - /* - * for each glean on the interface trigger a walk back to the children - */ - fib_protocol_t proto; - ip_adjacency_t *adj; - - - for (proto = FIB_PROTOCOL_IP4; proto <= FIB_PROTOCOL_IP6; proto++) - { - if (sw_if_index >= vec_len(adj_gleans[proto]) || - ADJ_INDEX_INVALID == adj_gleans[proto][sw_if_index]) - continue; - - adj = adj_get(adj_gleans[proto][sw_if_index]); - - fib_node_back_walk_ctx_t bw_ctx = { - .fnbw_reason = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP ? - FIB_NODE_BW_REASON_FLAG_INTERFACE_UP : - FIB_NODE_BW_REASON_FLAG_INTERFACE_DOWN), - }; - - fib_walk_sync(FIB_NODE_TYPE_ADJ, adj_get_index(adj), &bw_ctx); - } - - return (NULL); -} - -VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(adj_glean_interface_state_change); - -/** - * @brief Invoked on each SW interface of a HW interface when the - * HW interface state changes - */ -static void -adj_nbr_hw_sw_interface_state_change (vnet_main_t * vnm, - u32 sw_if_index, - void *arg) -{ - adj_glean_interface_state_change(vnm, sw_if_index, (uword) arg); -} - -/** - * @brief Registered callback for HW interface state changes - */ -static clib_error_t * -adj_glean_hw_interface_state_change (vnet_main_t * vnm, - u32 hw_if_index, - u32 flags) -{ - /* - * walk SW interfaces on the HW - */ - uword sw_flags; - - sw_flags = ((flags & VNET_HW_INTERFACE_FLAG_LINK_UP) ? - VNET_SW_INTERFACE_FLAG_ADMIN_UP : - 0); - - vnet_hw_interface_walk_sw(vnm, hw_if_index, - adj_nbr_hw_sw_interface_state_change, - (void*) sw_flags); - - return (NULL); -} - -VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION( - adj_glean_hw_interface_state_change); - -static clib_error_t * -adj_glean_interface_delete (vnet_main_t * vnm, - u32 sw_if_index, - u32 is_add) -{ - /* - * for each glean on the interface trigger a walk back to the children - */ - fib_protocol_t proto; - ip_adjacency_t *adj; - - if (is_add) - { - /* - * not interested in interface additions. we will not back walk - * to resolve paths through newly added interfaces. Why? The control - * plane should have the brains to add interfaces first, then routes. - * So the case where there are paths with a interface that matches - * one just created is the case where the path resolved through an - * interface that was deleted, and still has not been removed. The - * new interface added, is NO GUARANTEE that the interface being - * added now, even though it may have the same sw_if_index, is the - * same interface that the path needs. So tough! - * If the control plane wants these routes to resolve it needs to - * remove and add them again. - */ - return (NULL); - } - - for (proto = FIB_PROTOCOL_IP4; proto <= FIB_PROTOCOL_IP6; proto++) - { - if (sw_if_index >= vec_len(adj_gleans[proto]) || - ADJ_INDEX_INVALID == adj_gleans[proto][sw_if_index]) - continue; - - adj = adj_get(adj_gleans[proto][sw_if_index]); - - fib_node_back_walk_ctx_t bw_ctx = { - .fnbw_reason = FIB_NODE_BW_REASON_FLAG_INTERFACE_DELETE, - }; - - fib_walk_sync(FIB_NODE_TYPE_ADJ, adj_get_index(adj), &bw_ctx); - } - - return (NULL); -} - -VNET_SW_INTERFACE_ADD_DEL_FUNCTION(adj_glean_interface_delete); - -u8* -format_adj_glean (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); - - return (format(s, "%U-glean: %U", - format_fib_protocol, adj->ia_nh_proto, - format_vnet_sw_interface_name, - vnm, - vnet_get_sw_interface(vnm, - adj->rewrite_header.sw_if_index))); -} - - -static void -adj_dpo_lock (dpo_id_t *dpo) -{ - adj_lock(dpo->dpoi_index); -} -static void -adj_dpo_unlock (dpo_id_t *dpo) -{ - adj_unlock(dpo->dpoi_index); -} - -const static dpo_vft_t adj_glean_dpo_vft = { - .dv_lock = adj_dpo_lock, - .dv_unlock = adj_dpo_unlock, - .dv_format = format_adj_glean, -}; - -/** - * @brief The per-protocol VLIB graph nodes that are assigned to a glean - * object. - * - * this means that these graph nodes are ones from which a glean is the - * parent object in the DPO-graph. - */ -const static char* const glean_ip4_nodes[] = -{ - "ip4-glean", - NULL, -}; -const static char* const glean_ip6_nodes[] = -{ - "ip6-glean", - NULL, -}; - -const static char* const * const glean_nodes[DPO_PROTO_NUM] = -{ - [DPO_PROTO_IP4] = glean_ip4_nodes, - [DPO_PROTO_IP6] = glean_ip6_nodes, - [DPO_PROTO_MPLS] = NULL, -}; - -void -adj_glean_module_init (void) -{ - dpo_register(DPO_ADJACENCY_GLEAN, &adj_glean_dpo_vft, glean_nodes); -} |