From 88509fe353767cbde707c3e3b1f29392957819f3 Mon Sep 17 00:00:00 2001 From: Mauro Sardara Date: Tue, 24 Mar 2020 17:34:14 +0000 Subject: [HICN-574] Host stack plugin for VPP. Signed-off-by: Mauro Sardara Change-Id: I8d8fdffef31a7013265d6529c5f52f3d5ec70d18 Signed-off-by: Mauro Sardara Signed-off-by: Mauro Signed-off-by: Mauro Sardara --- hicn-plugin/src/mapme_ctrl_node.c | 337 -------------------------------------- 1 file changed, 337 deletions(-) delete mode 100644 hicn-plugin/src/mapme_ctrl_node.c (limited to 'hicn-plugin/src/mapme_ctrl_node.c') diff --git a/hicn-plugin/src/mapme_ctrl_node.c b/hicn-plugin/src/mapme_ctrl_node.c deleted file mode 100644 index a0be2be1d..000000000 --- a/hicn-plugin/src/mapme_ctrl_node.c +++ /dev/null @@ -1,337 +0,0 @@ -/* - * Copyright (c) 2017-2020 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. - */ - -/* - * This node processses MAP-Me control messages. - */ -#include -#include - -#include "hicn.h" -#include "mapme.h" -#include "mapme_ctrl.h" -#include "mapme_eventmgr.h" -#include "mgmt.h" -#include "parser.h" -#include "infra.h" -#include "strategy_dpo_manager.h" -#include "strategy_dpo_ctx.h" -#include "error.h" -#include "state.h" - -extern hicn_mapme_main_t mapme_main; - -#define MS2NS(x) x * 1000000 - -/* Functions declarations */ - -/* packet trace format function */ -static u8 *hicn_mapme_ctrl_format_trace (u8 * s, va_list * args); - - -/* Stats string values */ -static char *hicn_mapme_ctrl_error_strings[] = { -#define _(sym, string) string, - foreach_hicnfwd_error -#undef _ -}; - -/* - * @brief Process incoming control messages (Interest Update) - * @param vm vlib main data structure - * @param b Control packet (IU) - * @param face_id Ingress face id - * - * NOTE: - * - this function answers locally to the IU interest by replying with a Ack - * (Data) packet, unless in case of outdated information, in which we can - * consider the interest is dropped, and another IU (aka ICMP error) is sent so - * that retransmissions stop. - */ -static_always_inline bool -hicn_mapme_process_ctrl (vlib_main_t * vm, vlib_buffer_t * b, - hicn_face_id_t in_face_id) -{ - seq_t fib_seq; - const dpo_id_t *dpo; - hicn_prefix_t prefix; - mapme_params_t params; - int rc; - - /* Parse incoming message */ - rc = - hicn_mapme_parse_packet (vlib_buffer_get_current (b), &prefix, ¶ms); - if (rc < 0) - goto ERR_PARSE; - - vlib_cli_output (vm, "IU - type:%d seq:%d len:%d", params.type, params.seq, - prefix.len); - - /* if (params.seq == INVALID_SEQ) */ - /* { */ - /* vlib_log_warn (mapme_main.log_class, */ - /* "Invalid sequence number found in IU"); */ - - /* return true; */ - /* } */ - - /* We forge the ACK which we be the packet forwarded by the node */ - hicn_mapme_create_ack (vlib_buffer_get_current (b), ¶ms); - - dpo = fib_epm_lookup (&prefix.name, prefix.len); - if (!dpo) - { -#ifdef HICN_MAPME_ALLOW_NONEXISTING_FIB_ENTRY - /* - * This might happen for a node hosting a producer which has moved. - * Destroying the face has led to removing all corresponding FIB - * entries. In that case, we need to correctly restore the FIB entries. - */ - DEBUG ("Re-creating FIB entry with next hop on connection") -#error "not implemented" -#else - //ERROR("Received IU for non-existing FIB entry"); - return false; -#endif /* HICN_MAPME_ALLOW_NONEXISTING_FIB_ENTRY */ - - } - -#ifdef HICN_MAPME_ALLOW_LOCATORS - if (!dpo_is_hicn ((dpo))) - { - /* We have an IP DPO */ - WARN ("Not implemented yet."); - return false; - } -#endif - - /* Process the hICN DPO */ - hicn_mapme_tfib_t *tfib = - TFIB (hicn_strategy_dpo_ctx_get (dpo->dpoi_index)); - - if (tfib == NULL) - { - WARN ("Unable to get strategy ctx."); - return false; - } - - fib_seq = tfib->seq; - - if (params.seq > fib_seq) - { - DEBUG - ("Higher sequence number than FIB %d > %d, updating seq and next hops", - params.seq, fib_seq); - - /* This has to be done first to allow processing ack */ - tfib->seq = params.seq; - - // in_face and next_hops are face_id_t - - /* Remove ingress face from TFIB in case it was present */ - hicn_mapme_tfib_del (tfib, in_face_id); - - /* Move next hops to TFIB... but in_face... */ - for (u8 pos = 0; pos < tfib->entry_count; pos++) - { - hicn_face_t * face = hicn_dpoi_get_from_idx(tfib->next_hops[pos]); - hicn_face_t * in_face = hicn_dpoi_get_from_idx(in_face_id); - if (dpo_is_adj(&face->dpo)) - { - ip_adjacency_t * adj = adj_get (dpo->dpoi_index); - if (ip46_address_cmp(&(adj->sub_type.nbr.next_hop), &(in_face->nat_addr))== 0) - break; - } - DEBUG - ("Adding nexthop to the tfib, dpo index in_face %d, dpo index tfib %d", - in_face_id, tfib->next_hops[pos]); - hicn_mapme_tfib_add (tfib, tfib->next_hops[pos]); - } - - hicn_mapme_nh_set (tfib, in_face_id); - - /* We transmit both the prefix and the full dpo (type will be needed to pick the right transmit node */ - retx_t *retx = vlib_process_signal_event_data (vm, - hicn_mapme_eventmgr_process_node. - index, - HICN_MAPME_EVENT_FACE_NH_SET, - 1, - sizeof (retx_t)); - *retx = (retx_t) - { - .prefix = prefix, - .dpo = *dpo - }; - - } - else if (params.seq == fib_seq) - { - DEBUG ("Same sequence number than FIB %d > %d, adding next hop", - params.seq, fib_seq); - - /* Remove ingress face from TFIB in case it was present */ - hicn_mapme_tfib_del (tfib, in_face_id); - - /* Add ingress face to next hops */ - hicn_mapme_nh_add (tfib, in_face_id); - - /* Multipath, multihoming, multiple producers or duplicate interest */ - retx_t *retx = vlib_process_signal_event_data (vm, - hicn_mapme_eventmgr_process_node. - index, - HICN_MAPME_EVENT_FACE_NH_ADD, - 1, - sizeof (retx_t)); - *retx = (retx_t) - { - .prefix = prefix, - .dpo = *dpo - }; - } - else // params.seq < fib_seq - { - /* - * face is propagating outdated information, we can just consider it as a - * prevHops - */ - hicn_mapme_tfib_add (tfib, in_face_id); - - retx_t *retx = vlib_process_signal_event_data (vm, - hicn_mapme_eventmgr_process_node. - index, - HICN_MAPME_EVENT_FACE_PH_ADD, - 1, - sizeof (retx_t)); - *retx = (retx_t) - { - .prefix = prefix, - .dpo = *dpo - }; - } - - /* We just raise events, the event_mgr is in charge of forging packet. */ - - return true; - -//ERR_ACK_CREATE: -ERR_PARSE: - return false; -} - -vlib_node_registration_t hicn_mapme_ctrl_node; - -static uword -hicn_mapme_ctrl_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - hicn_buffer_t *hb; - hicn_mapme_ctrl_next_t next_index; - u32 n_left_from, *from, *to_next; - n_left_from = frame->n_vectors; - //hicn_face_id_t in_face; - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) // buffers in the current frame - { - u32 n_left_to_next; - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - - /* speculatively enqueue b0 to the current next frame */ - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - b0 = vlib_get_buffer (vm, bi0); - hb = hicn_get_buffer (b0); - - /* This determines the next node on which the ack will be sent back */ - u32 next0 = hicn_mapme_ctrl_get_iface_node (hb->face_id); - - hicn_mapme_process_ctrl (vm, b0, hb->face_id); - - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = hb->face_id; - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, bi0, next0); - - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - // vlib_node_increment_counter (vm, hicn_mapme_ctrl_node.index, - // HICN_MAPME_CTRL_ERROR_SWAPPED, pkts_swapped); - return frame->n_vectors; -} - -/* packet trace format function */ -static u8 * -hicn_mapme_ctrl_format_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - hicn_mapme_ctrl_trace_t *t = va_arg (*args, hicn_mapme_ctrl_trace_t *); - - s = format (s, "MAPME_CTRL: pkt: %d, sw_if_index %d, next index %d", - (int) t->pkt_type, t->sw_if_index, t->next_index); - return (s); -} - - -/* - * Node registration for the MAP-Me node processing special interests - */ -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (hicn_mapme_ctrl_node) = -{ - .function = hicn_mapme_ctrl_node_fn, - .name = "hicn-mapme-ctrl", - .vector_size = sizeof (u32), - .runtime_data_bytes = sizeof (hicn_mapme_ctrl_runtime_t), - .format_trace = hicn_mapme_ctrl_format_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN (hicn_mapme_ctrl_error_strings), - .error_strings = hicn_mapme_ctrl_error_strings, - .n_next_nodes = HICN_MAPME_CTRL_N_NEXT, - .next_nodes = - { - /* - * Control packets are not forwarded by this node, but sent by the Event - * Manager. This node is only responsible for sending ACK back, - * Acks are like data packets are output on iface's - */ - [HICN_MAPME_CTRL_NEXT_IP4_OUTPUT] = "hicn4-iface-output", - [HICN_MAPME_CTRL_NEXT_IP6_OUTPUT] = "hicn6-iface-output", - [HICN_MAPME_CTRL_NEXT_ERROR_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ -- cgit 1.2.3-korg