aboutsummaryrefslogtreecommitdiffstats
path: root/hicn-plugin/src/strategy_node.c
diff options
context:
space:
mode:
authorMauro Sardara <msardara@cisco.com>2020-03-24 17:34:14 +0000
committerMauro Sardara <msardara@cisco.com>2020-09-14 17:31:15 +0000
commit88509fe353767cbde707c3e3b1f29392957819f3 (patch)
treecccd51bac7966cd3138c525e8075d90341184a66 /hicn-plugin/src/strategy_node.c
parentd875ae92a7fa1eaab3bc2616aeeedfc64a81fea4 (diff)
[HICN-574] Host stack plugin for VPP.
Signed-off-by: Mauro Sardara <msardara@cisco.com> Change-Id: I8d8fdffef31a7013265d6529c5f52f3d5ec70d18 Signed-off-by: Mauro Sardara <msardara@cisco.com> Signed-off-by: Mauro <you@example.com> Signed-off-by: Mauro Sardara <msardara@cisco.com>
Diffstat (limited to 'hicn-plugin/src/strategy_node.c')
-rw-r--r--hicn-plugin/src/strategy_node.c323
1 files changed, 0 insertions, 323 deletions
diff --git a/hicn-plugin/src/strategy_node.c b/hicn-plugin/src/strategy_node.c
deleted file mode 100644
index 0659a871a..000000000
--- a/hicn-plugin/src/strategy_node.c
+++ /dev/null
@@ -1,323 +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 <vlib/vlib.h>
-#include <vnet/vnet.h>
-
-#include "hicn.h"
-#include "parser.h"
-#include "strategy.h"
-#include "strategy_dpo_ctx.h"
-#include "face_db.h"
-#include "infra.h"
-#include "mgmt.h"
-#include "pcs.h"
-#include "state.h"
-#include "strategies/strategy_mw.h"
-
-/* Registration struct for a graph node */
-vlib_node_registration_t hicn_strategy_node;
-
-/*
- * Node context data (to be used in all the strategy nodes); we think this is
- * per-thread/instance
- */
-typedef struct hicn_strategy_runtime_s
-{
- int id;
- hicn_pit_cs_t *pitcs;
-} hicn_strategy_runtime_t;
-
-/* Stats string values */
-static char *hicn_strategy_error_strings[] = {
-#define _(sym, string) string,
- foreach_hicnfwd_error
-#undef _
-};
-
-/* packet trace format function */
-u8 *
-hicn_strategy_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_strategy_trace_t *t = va_arg (*args, hicn_strategy_trace_t *);
-
- const hicn_strategy_vft_t *vft = hicn_dpo_get_strategy_vft (t->dpo_type);
-
- return vft->hicn_format_strategy_trace (s, t);
-}
-
-
-always_inline int
-hicn_new_interest (hicn_strategy_runtime_t * rt, vlib_buffer_t * b0,
- u32 * next, f64 tnow, u8 * nameptr,
- u16 namelen, hicn_face_id_t outface, int nh_idx,
- index_t dpo_ctx_id0, const hicn_strategy_vft_t * strategy,
- dpo_type_t dpo_type, u8 isv6,
- vl_api_hicn_api_node_stats_get_reply_t * stats)
-{
- int ret;
- hicn_hash_node_t *nodep;
- hicn_pcs_entry_t *pitp;
- hicn_header_t *hicn0;
- hicn_main_t *sm = &hicn_main;
- hicn_buffer_t *hicnb0 = hicn_get_buffer (b0);
- u32 node_id0 = 0;
- u8 vft_id0 = dpo_type;
- u8 is_cs0 = 0;
- u8 hash_entry_id = 0;
- u8 bucket_is_overflow = 0;
- u32 bucket_id = ~0;
-
-
- /* Create PIT node and init PIT entry */
- nodep = hicn_hashtb_alloc_node (rt->pitcs->pcs_table);
- if (PREDICT_FALSE (nodep == NULL))
- {
- /* Nothing we can do - no mem */
- *next = HICN_STRATEGY_NEXT_ERROR_DROP;
- return HICN_ERROR_HASHTB_NOMEM;
- }
- pitp = hicn_pit_get_data (nodep);
- hicn_pit_init_data (pitp);
- pitp->shared.create_time = tnow;
-
- hicn0 = vlib_buffer_get_current (b0);
- hicn_lifetime_t imsg_lifetime;
- hicn_type_t type = hicnb0->type;
- hicn_ops_vft[type.l1]->get_lifetime (type, &hicn0->protocol,
- &imsg_lifetime);
-
- if (imsg_lifetime > sm->pit_lifetime_max_ms)
- {
- imsg_lifetime = sm->pit_lifetime_max_ms;
- }
- pitp->shared.expire_time = hicn_pcs_get_exp_time (tnow, imsg_lifetime);
-
- /* Set up the hash node and insert it */
- hicn_hash_entry_t *hash_entry;
- hicn_hashtb_init_node (rt->pitcs->pcs_table, nodep, nameptr, namelen);
-
- ret =
- hicn_pcs_pit_insert (rt->pitcs, pitp, nodep, &hash_entry,
- hicnb0->name_hash, &node_id0, &dpo_ctx_id0, &vft_id0,
- &is_cs0, &hash_entry_id, &bucket_id,
- &bucket_is_overflow);
-
- if (ret == HICN_ERROR_NONE)
- {
- strategy->hicn_add_interest (vnet_buffer (b0)->ip.adj_index[VLIB_TX],
- hash_entry);
-
- /* Add face */
- hicn_face_db_add_face (hicnb0->face_id, &(pitp->u.pit.faces));
-
- *next = isv6 ? HICN_STRATEGY_NEXT_INTEREST_FACE6 :
- HICN_STRATEGY_NEXT_INTEREST_FACE4;
-
- vnet_buffer (b0)->ip.adj_index[VLIB_TX] = outface;
- stats->pkts_interest_count++;
- pitp->u.pit.pe_txnh = nh_idx;
- }
- else
- {
- /* Interest aggregate in PIT */
- if (ret == HICN_ERROR_HASHTB_EXIST)
- {
- hicn_store_internal_state (b0, hicnb0->name_hash, node_id0,
- dpo_ctx_id0, vft_id0, hash_entry_id,
- bucket_id, bucket_is_overflow);
- // We need to take a lock as the lock is not taken on the hash
- // entry because it is a CS entry (hash_insert function).
- hash_entry->locks++;
- *next =
- is_cs0 ? HICN_STRATEGY_NEXT_INTEREST_HITCS :
- HICN_STRATEGY_NEXT_INTEREST_HITPIT;
- }
- else
- {
- /* Send the packet to the interest-hitpit node */
- *next = HICN_STRATEGY_NEXT_ERROR_DROP;
- }
- hicn_faces_flush (&(pitp->u.pit.faces));
- hicn_hashtb_free_node (rt->pitcs->pcs_table, nodep);
- }
-
- return (ret);
-
-}
-
-/*
- * ICN strategy later node for interests: - 1 packet at a time - ipv4/tcp
- * ipv6/tcp
- */
-uword
-hicn_strategy_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
-
- u32 n_left_from, *from, *to_next, n_left_to_next;
- hicn_strategy_next_t next_index;
- hicn_strategy_runtime_t *rt = NULL;
- vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
- f64 tnow;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = (hicn_strategy_next_t) node->cached_next_index;
- rt = vlib_node_get_runtime_data (vm, hicn_strategy_node.index);
- rt->pitcs = &hicn_main.pitcs;
- /* Capture time in vpp terms */
- tnow = vlib_time_now (vm);
-
- while (n_left_from > 0)
- {
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u8 isv6;
- u8 *nameptr;
- u16 namelen;
- hicn_name_t name;
- hicn_header_t *hicn0;
- vlib_buffer_t *b0;
- u32 bi0;
- hicn_face_id_t outface;
- int nh_idx;
- u32 next0 = next_index;
- 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->trace_handle, 2 * 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);
- next0 = HICN_STRATEGY_NEXT_ERROR_DROP;
-
- hicn_dpo_ctx_t *dpo_ctx =
- hicn_strategy_dpo_ctx_get (vnet_buffer (b0)->ip.
- adj_index[VLIB_TX]);
- const hicn_strategy_vft_t *strategy =
- hicn_dpo_get_strategy_vft (dpo_ctx->dpo_type);
-
- ret = hicn_interest_parse_pkt (b0, &name, &namelen, &hicn0, &isv6);
- stats.pkts_processed++;
- /* Select next hop */
- /*
- * Double check that the interest has been through
- * the interest-pcslookup node due to misconfiguration in
- * the punting rules.
- */
- if (PREDICT_TRUE
- (ret == HICN_ERROR_NONE && HICN_IS_NAMEHASH_CACHED (b0)
- && strategy->hicn_select_next_hop (vnet_buffer (b0)->
- ip.adj_index[VLIB_TX],
- &nh_idx,
- &outface) ==
- HICN_ERROR_NONE))
- {
- /*
- * No need to check if parsing was successful
- * here. Already checked in the interest_pcslookup
- * node
- */
- nameptr = (u8 *) (&name);
- hicn_new_interest (rt, b0, &next0, tnow, nameptr, namelen,
- outface, nh_idx,
- vnet_buffer (b0)->ip.adj_index[VLIB_TX],
- strategy, dpo_ctx->dpo_type, isv6, &stats);
- }
- /* Maybe trace */
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
- (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- hicn_strategy_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->pkt_type = HICN_PKT_TYPE_CONTENT;
- t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- t->next_index = next0;
- t->dpo_type = dpo_ctx->dpo_type;
- }
- /*
- * Verify speculative enqueue, maybe switch current
- * next frame
- */
- /*
- * Fix in case of a wrong speculation. Needed for
- * cloning the data in the right 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);
- }
-
- vlib_node_increment_counter (vm, hicn_strategy_node.index,
- HICNFWD_ERROR_PROCESSED, stats.pkts_processed);
- vlib_node_increment_counter (vm, hicn_strategy_node.index,
- HICNFWD_ERROR_INTERESTS,
- stats.pkts_interest_count);
-
- return (frame->n_vectors);
-}
-
-/*
- * Node registration for the forwarder node
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (hicn_strategy_node) =
- {
- .name = "hicn-strategy",
- .function = hicn_strategy_fn,
- .vector_size = sizeof (u32),
- .runtime_data_bytes = sizeof (int) + sizeof(hicn_pit_cs_t *),
- .format_trace = hicn_strategy_format_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN (hicn_strategy_error_strings),
- .error_strings = hicn_strategy_error_strings,
- .n_next_nodes = HICN_STRATEGY_N_NEXT,
- .next_nodes =
- {
- [HICN_STRATEGY_NEXT_INTEREST_HITPIT] = "hicn-interest-hitpit",
- [HICN_STRATEGY_NEXT_INTEREST_HITCS] = "hicn-interest-hitcs",
- [HICN_STRATEGY_NEXT_INTEREST_FACE4] = "hicn4-face-output",
- [HICN_STRATEGY_NEXT_INTEREST_FACE6] = "hicn6-face-output",
- [HICN_STRATEGY_NEXT_ERROR_DROP] = "error-drop",
- },
- };
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables: eval: (c-set-style "gnu") End:
- */