diff options
Diffstat (limited to 'hicn-plugin/src/data_pcslookup_node.c')
-rw-r--r-- | hicn-plugin/src/data_pcslookup_node.c | 104 |
1 files changed, 41 insertions, 63 deletions
diff --git a/hicn-plugin/src/data_pcslookup_node.c b/hicn-plugin/src/data_pcslookup_node.c index 99af350b0..5ae6958f5 100644 --- a/hicn-plugin/src/data_pcslookup_node.c +++ b/hicn-plugin/src/data_pcslookup_node.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Copyright (c) 2021-2022 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: @@ -29,7 +29,7 @@ static char *hicn_data_pcslookup_error_strings[] = { }; /* packet trace format function */ -always_inline u8 *hicn_data_pcslookup_format_trace (u8 * s, va_list * args); +always_inline u8 *hicn_data_pcslookup_format_trace (u8 *s, va_list *args); vlib_node_registration_t hicn_data_pcslookup_node; @@ -37,13 +37,19 @@ vlib_node_registration_t hicn_data_pcslookup_node; * hICN node for handling data. It performs a lookup in the PIT. */ static uword -hicn_data_pcslookup_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +hicn_data_pcslookup_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, + vlib_frame_t *frame) { u32 n_left_from, *from, *to_next; hicn_data_pcslookup_next_t next_index; hicn_data_pcslookup_runtime_t *rt; vl_api_hicn_api_node_stats_get_reply_t stats = { 0 }; + vlib_buffer_t *b0; + u32 bi0; + u32 next0 = HICN_DATA_PCSLOOKUP_NEXT_ERROR_DROP; + hicn_pcs_entry_t *pcs_entry = NULL; + hicn_buffer_t *hicnb0; + int ret; rt = vlib_node_get_runtime_data (vm, node->node_index); @@ -62,25 +68,7 @@ hicn_data_pcslookup_node_fn (vlib_main_t * vm, 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_DATA_PCSLOOKUP_NEXT_ERROR_DROP; - u64 name_hash = 0; - hicn_name_t name; - hicn_header_t *hicn0 = NULL; - u32 node_id0 = 0; - index_t dpo_ctx_id0 = 0; - int ret0; - u8 vft_id0; - u8 is_cs0; - u8 hash_entry_id = 0; - u8 bucket_is_overflown = 0; - u32 bucket_id = ~0; - - /* Prefetch for next iteration. */ + // Prefetch for next iteration. if (n_left_from > 1) { vlib_buffer_t *b1; @@ -88,9 +76,9 @@ hicn_data_pcslookup_node_fn (vlib_main_t * vm, // Prefetch two cache lines-- 128 byte-- so that we load the // hicn_buffer_t as well CLIB_PREFETCH (b1, 2 * CLIB_CACHE_LINE_BYTES, STORE); - CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES, LOAD); } - /* Dequeue a packet buffer */ + + // Dequeue a packet buffer bi0 = from[0]; from += 1; n_left_from -= 1; @@ -99,46 +87,35 @@ hicn_data_pcslookup_node_fn (vlib_main_t * vm, n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); + hicnb0 = hicn_get_buffer (b0); + + // By default go to drop next0 = HICN_DATA_PCSLOOKUP_NEXT_ERROR_DROP; - /* Incr packet counter */ + // Increase packet counters stats.pkts_processed += 1; + stats.pkts_data_count += 1; - ret0 = hicn_data_parse_pkt (b0, &name, &namelen, &hicn0, &isv6); - nameptr = (u8 *) (&name); + // Lookup the name in the PIT + hicn_name_t name; + hicn_packet_get_name (&hicn_get_buffer (b0)->pkbuf, &name); + ret = hicn_pcs_lookup_one (rt->pitcs, &name, &pcs_entry); - if (PREDICT_TRUE (ret0 == HICN_ERROR_NONE && - hicn_hashtb_fullhash (nameptr, namelen, - &name_hash) == - HICN_ERROR_NONE)) + if (ret == HICN_ERROR_NONE) { - int res = - hicn_hashtb_lookup_node (rt->pitcs->pcs_table, nameptr, - namelen, name_hash, - 1 - /*is_data. Do not take lock if hit CS */ - , - &node_id0, &dpo_ctx_id0, &vft_id0, - &is_cs0, &hash_entry_id, &bucket_id, - &bucket_is_overflown); - - stats.pkts_data_count += 1; - - if (res == HICN_ERROR_NONE) - { - /* - * In case the result of the lookup - * is a CS entry, the packet is - * dropped - */ - next0 = HICN_DATA_PCSLOOKUP_NEXT_DATA_FWD + is_cs0; - } + ret = hicn_store_internal_state ( + b0, hicn_pcs_entry_get_index (rt->pitcs, pcs_entry), + hicnb0->dpo_ctx_id); + + /* + * In case the result of the lookup + * is a CS entry, the packet is + * dropped + */ + next0 = HICN_DATA_PCSLOOKUP_NEXT_DATA_FWD + + (hicn_pcs_entry_is_cs (pcs_entry) && !ret); } - hicn_store_internal_state (b0, name_hash, node_id0, dpo_ctx_id0, - vft_id0, hash_entry_id, bucket_id, - bucket_is_overflown); - /* * Verify speculative enqueue, maybe switch current * next frame @@ -156,16 +133,18 @@ hicn_data_pcslookup_node_fn (vlib_main_t * vm, { hicn_data_pcslookup_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); - t->pkt_type = HICN_PKT_TYPE_CONTENT; + t->pkt_type = HICN_PACKET_TYPE_DATA; t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; t->next_index = next0; } } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); } + /* Check the CS LRU, and trim if necessary. */ - u32 pit_int_count = hicn_pit_get_int_count (rt->pitcs); - u32 pit_cs_count = hicn_pit_get_cs_count (rt->pitcs); + u32 pit_int_count = hicn_pcs_get_pit_count (rt->pitcs); + u32 pit_cs_count = hicn_pcs_get_cs_count (rt->pitcs); vlib_node_increment_counter (vm, hicn_data_pcslookup_node.index, HICNFWD_ERROR_PROCESSED, stats.pkts_processed); @@ -177,12 +156,13 @@ hicn_data_pcslookup_node_fn (vlib_main_t * vm, HICNFWD_ERROR_INT_COUNT, pit_int_count); update_node_counter (vm, hicn_data_pcslookup_node.index, HICNFWD_ERROR_CS_COUNT, pit_cs_count); + return (frame->n_vectors); } /* packet trace format function */ static u8 * -hicn_data_pcslookup_format_trace (u8 * s, va_list * args) +hicn_data_pcslookup_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 *); @@ -197,7 +177,6 @@ hicn_data_pcslookup_format_trace (u8 * s, va_list * args) /* * Node registration for the data forwarder node */ -/* *INDENT-OFF* */ VLIB_REGISTER_NODE(hicn_data_pcslookup_node) = { .function = hicn_data_pcslookup_node_fn, @@ -214,7 +193,6 @@ VLIB_REGISTER_NODE(hicn_data_pcslookup_node) = [HICN_DATA_PCSLOOKUP_NEXT_ERROR_DROP] = "error-drop", }, }; -/* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON |