diff options
Diffstat (limited to 'hicn-plugin/src/interest_hitpit_node.c')
| -rw-r--r-- | hicn-plugin/src/interest_hitpit_node.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/hicn-plugin/src/interest_hitpit_node.c b/hicn-plugin/src/interest_hitpit_node.c deleted file mode 100644 index 9ebf183c5..000000000 --- a/hicn-plugin/src/interest_hitpit_node.c +++ /dev/null @@ -1,308 +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. - */ - -#include <vnet/ip/ip6_packet.h> - -#include "interest_hitpit.h" -#include "mgmt.h" -#include "parser.h" -#include "data_fwd.h" -#include "infra.h" -#include "strategy.h" -#include "strategy_dpo_ctx.h" -#include "strategy_dpo_manager.h" -#include "state.h" -#include "error.h" -#include "face_db.h" - -/* packet trace format function */ -static u8 *hicn_interest_hitpit_format_trace (u8 * s, va_list * args); - -/* Stats string values */ -static char *hicn_interest_hitpit_error_strings[] = { -#define _(sym, string) string, - foreach_hicnfwd_error -#undef _ -}; - -vlib_node_registration_t hicn_interest_hitpit_node; - -always_inline void drop_packet (u32 * next0); - -/* - * hICN forwarder node for interests hitting the PIT - */ -static uword -hicn_interest_hitpit_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next; - hicn_interest_hitpit_next_t next_index; - hicn_interest_hitpit_runtime_t *rt; - vl_api_hicn_api_node_stats_get_reply_t stats = { 0 }; - f64 tnow; - - rt = vlib_node_get_runtime_data (vm, hicn_interest_hitpit_node.index); - - if (PREDICT_FALSE (rt->pitcs == NULL)) - { - rt->pitcs = &hicn_main.pitcs; - } - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - /* Capture time in vpp terms */ - tnow = vlib_time_now (vm); - - while (n_left_from > 0) - { - 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) - { - vlib_buffer_t *b0; - u8 isv6; - u8 *nameptr; - u16 namelen; - u32 bi0; - u32 next0 = HICN_INTEREST_HITPIT_NEXT_ERROR_DROP; - hicn_name_t name; - hicn_header_t *hicn0; - hicn_hash_node_t *node0; - const hicn_strategy_vft_t *strategy_vft0; - const hicn_dpo_vft_t *dpo_vft0; - hicn_pcs_entry_t *pitp; - u8 dpo_ctx_id0; - u8 found = 0; - int nh_idx; - hicn_face_id_t outface; - hicn_hash_entry_t *hash_entry0; - hicn_buffer_t *hicnb0; - int ret; - - /* Prefetch for next iteration. */ - if (n_left_from > 1) - { - vlib_buffer_t *b1; - b1 = vlib_get_buffer (vm, from[1]); - CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD); - CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES, STORE); - } - - /* Dequeue a packet buffer */ - bi0 = from[0]; - from += 1; - n_left_from -= 1; - to_next[0] = bi0; - to_next += 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - - /* Get hicn buffer and state */ - hicnb0 = hicn_get_buffer (b0); - hicn_get_internal_state (hicnb0, rt->pitcs, &node0, &strategy_vft0, - &dpo_vft0, &dpo_ctx_id0, &hash_entry0); - - - ret = hicn_interest_parse_pkt (b0, &name, &namelen, &hicn0, &isv6); - nameptr = (u8 *) (&name); - pitp = hicn_pit_get_data (node0); - dpo_id_t hicn_dpo_id0 = - { dpo_vft0->hicn_dpo_get_type (), 0, 0, dpo_ctx_id0 }; - - /* - * Check if the hit is instead a collision in the - * hash table. Unlikely to happen. - */ - if (PREDICT_FALSE - (ret != HICN_ERROR_NONE - || !hicn_node_compare (nameptr, namelen, node0))) - { - stats.interests_hash_collision++; - /* Remove lock from the entry */ - hicn_pcs_remove_lock (rt->pitcs, &pitp, &node0, vm, hash_entry0, - dpo_vft0, &hicn_dpo_id0); - drop_packet (&next0); - - goto end_processing; - } - /* - * If the entry is expired, remove it no matter of - * the possible cases. - */ - if (tnow > pitp->shared.expire_time) - { - strategy_vft0->hicn_on_interest_timeout (dpo_ctx_id0); - hicn_pcs_delete (rt->pitcs, &pitp, &node0, vm, hash_entry0, - dpo_vft0, &hicn_dpo_id0); - stats.pit_expired_count++; - next0 = HICN_INTEREST_HITPIT_NEXT_STRATEGY; - } - else - { - if ((hash_entry0->he_flags & HICN_HASH_ENTRY_FLAG_CS_ENTRY)) - { - next0 = HICN_INTEREST_HITPIT_NEXT_INTEREST_HITCS; - } - else - { - /* - * Distinguish between aggregation or - * retransmission - */ - - found = - hicn_face_search (hicnb0->face_id, - &(pitp->u.pit.faces)); - - if (found) - { - strategy_vft0->hicn_select_next_hop (dpo_ctx_id0, - &nh_idx, &outface); - /* Retransmission */ - /* - * Prepare the packet for the - * forwarding - */ - next0 = isv6 ? HICN_INTEREST_HITPIT_NEXT_FACE6_OUTPUT : - HICN_INTEREST_HITPIT_NEXT_FACE4_OUTPUT; - vnet_buffer (b0)->ip.adj_index[VLIB_TX] = - outface; - - /* - * Update the egress face in - * the PIT - */ - pitp->u.pit.pe_txnh = nh_idx; - stats.interests_retx++; - } - else - { - hicn_face_db_add_face (hicnb0->face_id, - &pitp->u.pit.faces); - - /* Aggregation */ - drop_packet (&next0); - stats.interests_aggregated++; - } - /* Remove lock from the entry */ - hicn_pcs_remove_lock (rt->pitcs, &pitp, &node0, vm, - hash_entry0, dpo_vft0, &hicn_dpo_id0); - - } - } - end_processing: - - /* Maybe trace */ - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && - (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - hicn_interest_hitpit_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = HICN_PKT_TYPE_INTEREST; - t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - t->next_index = next0; - } - /* Incr packet counter */ - stats.pkts_processed += 1; - - /* - * Verify speculative enqueue, maybe switch current - * next frame - */ - 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); - } - u32 pit_int_count = hicn_pit_get_int_count (rt->pitcs); - - - vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index, - HICNFWD_ERROR_PROCESSED, stats.pkts_processed); - vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index, - HICNFWD_ERROR_INTEREST_AGG, - stats.interests_aggregated); - vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index, - HICNFWD_ERROR_INT_RETRANS, - stats.interests_retx); - vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index, - HICNFWD_ERROR_PIT_EXPIRED, - stats.pit_expired_count); - vlib_node_increment_counter (vm, hicn_interest_hitpit_node.index, - HICNFWD_ERROR_HASH_COLL_HASHTB_COUNT, - stats.interests_hash_collision); - - update_node_counter (vm, hicn_interest_hitpit_node.index, - HICNFWD_ERROR_INT_COUNT, pit_int_count); - - return (frame->n_vectors); -} - -/* packet trace format function */ -static u8 * -hicn_interest_hitpit_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_interest_hitpit_trace_t *t = - va_arg (*args, hicn_interest_hitpit_trace_t *); - - s = format (s, "INTEREST-HITPIT: pkt: %d, sw_if_index %d, next index %d", - (int) t->pkt_type, t->sw_if_index, t->next_index); - return (s); -} - -void -drop_packet (u32 * next0) -{ - *next0 = HICN_INTEREST_HITPIT_NEXT_ERROR_DROP; -} - -/* - * Node registration for the interest forwarder node - */ -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(hicn_interest_hitpit_node) = -{ - .function = hicn_interest_hitpit_node_fn, - .name = "hicn-interest-hitpit", - .vector_size = sizeof(u32), - .runtime_data_bytes = sizeof(hicn_interest_hitpit_runtime_t), - .format_trace = hicn_interest_hitpit_format_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN(hicn_interest_hitpit_error_strings), - .error_strings = hicn_interest_hitpit_error_strings, - .n_next_nodes = HICN_INTEREST_HITPIT_N_NEXT, - /* edit / add dispositions here */ - .next_nodes = - { - [HICN_INTEREST_HITPIT_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs", - [HICN_INTEREST_HITPIT_NEXT_STRATEGY] = "hicn-strategy", - [HICN_INTEREST_HITPIT_NEXT_FACE4_OUTPUT] = "hicn4-face-output", - [HICN_INTEREST_HITPIT_NEXT_FACE6_OUTPUT] = "hicn6-face-output", - [HICN_INTEREST_HITPIT_NEXT_ERROR_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: eval: (c-set-style "gnu") End: - */ |