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authorAlberto Compagno <acompagn+fdio@cisco.com>2020-05-05 12:12:21 +0200
committerAlberto Compagno <acompagn+fdio@cisco.com>2020-05-06 16:44:34 +0200
commit485474ec0bcd5fd73743a040cbad326a458e6390 (patch)
treebca81977a66d96f9e0a29e2e522a64f93d7767f0 /hicn-plugin/src/data_push_node.c
parent43d0ecbb1a1f7e1f72bf85441547b1678aed4350 (diff)
[HICN-606] Added doxygen documentation
Signed-off-by: Alberto Compagno <acompagn+fdio@cisco.com> Change-Id: If2bf7f4f310adf6adbbb9ea29eafcb2a0ee40d54
Diffstat (limited to 'hicn-plugin/src/data_push_node.c')
-rw-r--r--hicn-plugin/src/data_push_node.c326
1 files changed, 0 insertions, 326 deletions
diff --git a/hicn-plugin/src/data_push_node.c b/hicn-plugin/src/data_push_node.c
deleted file mode 100644
index 18c4690b1..000000000
--- a/hicn-plugin/src/data_push_node.c
+++ /dev/null
@@ -1,326 +0,0 @@
-/*
- * Copyright (c) 2017-2019 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_dpo_ctx.h"
-#include "infra.h"
-#include "mgmt.h"
-#include "pcs.h"
-#include "state.h"
-
-/*
- * Node context data (to be used in all the strategy nodes); we think this is
- * per-thread/instance
- */
-typedef struct hicn_data_push_runtime_s
-{
- int id;
- hicn_pit_cs_t *pitcs;
-} hicn_data_push_runtime_t;
-
-/* Stats string values */
-static char *hicn_data_push_error_strings[] = {
-#define _(sym, string) string,
- foreach_hicnfwd_error
-#undef _
-};
-
-typedef enum
-{
- HICN_DATA_PUSH_NEXT_FWD,
- HICN_DATA_PUSH_NEXT_ERROR_DROP,
- HICN_DATA_PUSH_N_NEXT,
-} hicn_data_push_next_t;
-
-/* Trace context struct */
-typedef struct
-{
- u32 next_index;
- u32 sw_if_index;
- u8 pkt_type;
-} hicn_data_push_trace_t;
-
-vlib_node_registration_t hicn_data_push_node;
-
-always_inline void
-prep_buffer_for_cs (vlib_main_t * vm, vlib_buffer_t * b0, u8 isv6)
-{
- word buffer_advance = CLIB_CACHE_LINE_BYTES * 2;
- hicn_buffer_t *hicnb = hicn_get_buffer (b0);
-
- if (PREDICT_TRUE (b0->next_buffer == 0))
- {
- b0->total_length_not_including_first_buffer = 0;
- b0->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
- }
-
- /*
- * Mark the buffer as smaller than TWO_CL. It will be stored as is in the CS, without excluding
- * the hicn_header. Cloning is not possible, it will be copied.
- */
- if (b0->current_length <= (buffer_advance + (CLIB_CACHE_LINE_BYTES * 2)))
- {
- /* In this case the packet is copied. We don't need to add a reference as no buffer are
- * chained to it.
- */
- hicnb->flags |= HICN_BUFFER_FLAGS_PKT_LESS_TWO_CL;
- }
- else
- {
- vlib_buffer_advance (b0, buffer_advance);
- }
-}
-
-always_inline int
-hicn_new_data (vlib_main_t * vm, hicn_data_push_runtime_t * rt,
- vlib_buffer_t * b0, u32 ** to_forward, u32 * n_to_forward,
- f64 tnow, u8 * nameptr, u16 namelen, u8 isv6)
-{
- int ret;
- u32 bi0 = vlib_get_buffer_index (vm, b0);
- hicn_hash_node_t *nodep;
- hicn_pcs_entry_t *pitp;
- hicn_header_t *hicn0 = vlib_buffer_get_current (b0);
- hicn_buffer_t *hicnb0 = hicn_get_buffer (b0);
- u32 node_id0 = 0;
- index_t dpo_ctx_id0 = ~0;
- u8 vft_id0 = default_dpo.hicn_dpo_get_type ();
- u8 is_cs0 = 1;
- u8 hash_entry_id = 0;
- u32 bucket_id = ~0;
- u8 bucket_is_overflow = 0;
- hicn_lifetime_t dmsg_lifetime;
-
- hicnb0 = hicn_get_buffer (b0);
- hicn_type_t type = hicnb0->type;
- hicn_ops_vft[type.l1]->get_lifetime (type, &hicn0->protocol,
- &dmsg_lifetime);
-
- if (!dmsg_lifetime)
- {
- vlib_buffer_free_one (vm, bi0);
- return HICN_ERROR_NONE;
- }
-
- /* Create PIT node and init PIT entry */
- nodep = hicn_hashtb_alloc_node (rt->pitcs->pcs_table);
- if (PREDICT_FALSE (nodep == NULL))
- {
- vlib_buffer_free_one (vm, bi0);
- /* Nothing we can do - no mem */
- return HICN_ERROR_HASHTB_NOMEM;
- }
-
- pitp = hicn_pit_get_data (nodep);
- hicn_cs_init_data (pitp);
- pitp->shared.create_time = tnow;
-
- if (dmsg_lifetime < HICN_PARAM_CS_LIFETIME_MIN
- || dmsg_lifetime > HICN_PARAM_CS_LIFETIME_MAX)
- {
- dmsg_lifetime = HICN_PARAM_CS_LIFETIME_DFLT;
- }
- pitp->shared.expire_time = hicn_pcs_get_exp_time (tnow, dmsg_lifetime);
-
- /* Store the original packet buffer in the CS node */
- pitp->u.cs.cs_pkt_buf = vlib_get_buffer_index (vm, b0);
-
- /* Set up the hash node and insert it */
- hicn_hashtb_init_node (rt->pitcs->pcs_table, nodep, nameptr, namelen);
-
-
- hicn_hash_entry_t *hash_entry;
- ret =
- hicn_pcs_cs_insert_update (vm, 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, hicnb0->face_id);
-
- if (ret != HICN_ERROR_NONE)
- {
- hicn_hashtb_free_node (rt->pitcs->pcs_table, nodep);
- }
-
- if (ret != HICN_ERROR_HASHTB_NOMEM)
- {
- if (!is_cs0)
- {
- ASSERT (ret != HICN_ERROR_NONE);
- hicn_store_internal_state (b0, hicnb0->name_hash, node_id0,
- dpo_ctx_id0, vft_id0, hash_entry_id,
- bucket_id, bucket_is_overflow);
-
- (*to_forward)[0] = bi0;
- *to_forward += 1;
- *n_to_forward += 1;
- }
- else
- {
- prep_buffer_for_cs (vm, b0, isv6);
- }
- }
-
- return (ret);
-
-}
-
-/*
- * ICN strategy later node for interests: - 1 packet at a time - ipv4/tcp
- * ipv6/tcp
- */
-uword
-hicn_data_push_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_data_push_next_t next_index;
- hicn_data_push_runtime_t *rt;
- vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
- f64 tnow;
- u32 *to_forward = NULL, *header = NULL, n_to_forward = 0;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = (hicn_data_push_next_t) node->cached_next_index;
- rt = vlib_node_get_runtime_data (vm, hicn_data_push_node.index);
- rt->pitcs = &hicn_main.pitcs;
-
- vec_alloc (to_forward, n_left_from);
- header = to_forward;
- /* Capture time in vpp terms */
- tnow = vlib_time_now (vm);
-
- while (n_left_from > 0)
- {
- u8 isv6;
- u8 *nameptr;
- u16 namelen;
- hicn_name_t name;
- hicn_header_t *hicn0;
- vlib_buffer_t *b0;
- u32 bi0;
- int ret0;
-
- /* Prefetch for next iteration. */
- if (n_left_from > 1)
- {
- vlib_buffer_t *b1;
- //hicn_buffer_t * hicnb1;
- 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;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- ret0 = hicn_data_parse_pkt (b0, &name, &namelen, &hicn0, &isv6);
- nameptr = (u8 *) (&name);
-
- if (PREDICT_TRUE (ret0 == HICN_ERROR_NONE))
- {
- hicn_new_data (vm, rt, b0, &to_forward, &n_to_forward, tnow,
- nameptr, namelen, isv6);
- stats.pkts_data_count++;
- }
-
- /* Maybe trace */
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
- (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- hicn_data_push_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 = HICN_DATA_PUSH_NEXT_ERROR_DROP;
- }
- }
-
- to_forward -= n_to_forward;
- next_index = HICN_DATA_PUSH_NEXT_FWD;
-
- while (n_to_forward > 0)
- {
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while (n_to_forward > 0 && n_left_to_next > 0)
- {
- to_next[0] = to_forward[0];
- to_forward++;
- n_to_forward--;
- to_next++;
- n_left_to_next--;
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- vec_free (header);
-
- vlib_node_increment_counter (vm, hicn_data_push_node.index,
- HICNFWD_ERROR_CACHED, stats.pkts_data_count);
-
- return (frame->n_vectors);
-}
-
-/* packet trace format function */
-always_inline u8 *
-hicn_data_push_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_data_push_trace_t *t = va_arg (*args, hicn_data_push_trace_t *);
-
- s = format (s, "DATA-STORE: pkt: %d, sw_if_index %d, next index %d\n",
- (int) t->pkt_type, t->sw_if_index, t->next_index);
-
- return (s);
-}
-
-
-/*
- * Node registration for the data forwarder node
- */
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE(hicn_data_push_node) =
-{
- .function = hicn_data_push_fn,
- .name = "hicn-data-push",
- .vector_size = sizeof(u32),
- .runtime_data_bytes = sizeof(hicn_data_push_runtime_t),
- .format_trace = hicn_data_push_format_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(hicn_data_push_error_strings),
- .error_strings = hicn_data_push_error_strings,
- .n_next_nodes = HICN_DATA_PUSH_N_NEXT,
- .next_nodes = {
- [HICN_DATA_PUSH_NEXT_FWD] = "hicn-data-fwd",
- [HICN_DATA_PUSH_NEXT_ERROR_DROP] = "error-drop",
- },
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables: eval: (c-set-style "gnu") End:
- */