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-rw-r--r--lib/librte_hash/rte_cuckoo_hash_x86.h164
1 files changed, 0 insertions, 164 deletions
diff --git a/lib/librte_hash/rte_cuckoo_hash_x86.h b/lib/librte_hash/rte_cuckoo_hash_x86.h
deleted file mode 100644
index 2c5b017e..00000000
--- a/lib/librte_hash/rte_cuckoo_hash_x86.h
+++ /dev/null
@@ -1,164 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2016 Intel Corporation
- */
-
-/* rte_cuckoo_hash_x86.h
- * This file holds all x86 specific Cuckoo Hash functions
- */
-
-/* Only tries to insert at one bucket (@prim_bkt) without trying to push
- * buckets around
- */
-static inline unsigned
-rte_hash_cuckoo_insert_mw_tm(struct rte_hash_bucket *prim_bkt,
- hash_sig_t sig, hash_sig_t alt_hash, uint32_t new_idx)
-{
- unsigned i, status;
- unsigned try = 0;
-
- while (try < RTE_HASH_TSX_MAX_RETRY) {
- status = rte_xbegin();
- if (likely(status == RTE_XBEGIN_STARTED)) {
- /* Insert new entry if there is room in the primary
- * bucket.
- */
- for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
- /* Check if slot is available */
- if (likely(prim_bkt->key_idx[i] == EMPTY_SLOT)) {
- prim_bkt->sig_current[i] = sig;
- prim_bkt->sig_alt[i] = alt_hash;
- prim_bkt->key_idx[i] = new_idx;
- break;
- }
- }
- rte_xend();
-
- if (i != RTE_HASH_BUCKET_ENTRIES)
- return 0;
-
- break; /* break off try loop if transaction commits */
- } else {
- /* If we abort we give up this cuckoo path. */
- try++;
- rte_pause();
- }
- }
-
- return -1;
-}
-
-/* Shift buckets along provided cuckoo_path (@leaf and @leaf_slot) and fill
- * the path head with new entry (sig, alt_hash, new_idx)
- */
-static inline int
-rte_hash_cuckoo_move_insert_mw_tm(const struct rte_hash *h,
- struct queue_node *leaf, uint32_t leaf_slot,
- hash_sig_t sig, hash_sig_t alt_hash, uint32_t new_idx)
-{
- unsigned try = 0;
- unsigned status;
- uint32_t prev_alt_bkt_idx;
-
- struct queue_node *prev_node, *curr_node = leaf;
- struct rte_hash_bucket *prev_bkt, *curr_bkt = leaf->bkt;
- uint32_t prev_slot, curr_slot = leaf_slot;
-
- while (try < RTE_HASH_TSX_MAX_RETRY) {
- status = rte_xbegin();
- if (likely(status == RTE_XBEGIN_STARTED)) {
- while (likely(curr_node->prev != NULL)) {
- prev_node = curr_node->prev;
- prev_bkt = prev_node->bkt;
- prev_slot = curr_node->prev_slot;
-
- prev_alt_bkt_idx
- = prev_bkt->sig_alt[prev_slot]
- & h->bucket_bitmask;
-
- if (unlikely(&h->buckets[prev_alt_bkt_idx]
- != curr_bkt)) {
- rte_xabort(RTE_XABORT_CUCKOO_PATH_INVALIDED);
- }
-
- /* Need to swap current/alt sig to allow later
- * Cuckoo insert to move elements back to its
- * primary bucket if available
- */
- curr_bkt->sig_alt[curr_slot] =
- prev_bkt->sig_current[prev_slot];
- curr_bkt->sig_current[curr_slot] =
- prev_bkt->sig_alt[prev_slot];
- curr_bkt->key_idx[curr_slot]
- = prev_bkt->key_idx[prev_slot];
-
- curr_slot = prev_slot;
- curr_node = prev_node;
- curr_bkt = curr_node->bkt;
- }
-
- curr_bkt->sig_current[curr_slot] = sig;
- curr_bkt->sig_alt[curr_slot] = alt_hash;
- curr_bkt->key_idx[curr_slot] = new_idx;
-
- rte_xend();
-
- return 0;
- }
-
- /* If we abort we give up this cuckoo path, since most likely it's
- * no longer valid as TSX detected data conflict
- */
- try++;
- rte_pause();
- }
-
- return -1;
-}
-
-/*
- * Make space for new key, using bfs Cuckoo Search and Multi-Writer safe
- * Cuckoo
- */
-static inline int
-rte_hash_cuckoo_make_space_mw_tm(const struct rte_hash *h,
- struct rte_hash_bucket *bkt,
- hash_sig_t sig, hash_sig_t alt_hash,
- uint32_t new_idx)
-{
- unsigned i;
- struct queue_node queue[RTE_HASH_BFS_QUEUE_MAX_LEN];
- struct queue_node *tail, *head;
- struct rte_hash_bucket *curr_bkt, *alt_bkt;
-
- tail = queue;
- head = queue + 1;
- tail->bkt = bkt;
- tail->prev = NULL;
- tail->prev_slot = -1;
-
- /* Cuckoo bfs Search */
- while (likely(tail != head && head <
- queue + RTE_HASH_BFS_QUEUE_MAX_LEN -
- RTE_HASH_BUCKET_ENTRIES)) {
- curr_bkt = tail->bkt;
- for (i = 0; i < RTE_HASH_BUCKET_ENTRIES; i++) {
- if (curr_bkt->key_idx[i] == EMPTY_SLOT) {
- if (likely(rte_hash_cuckoo_move_insert_mw_tm(h,
- tail, i, sig,
- alt_hash, new_idx) == 0))
- return 0;
- }
-
- /* Enqueue new node and keep prev node info */
- alt_bkt = &(h->buckets[curr_bkt->sig_alt[i]
- & h->bucket_bitmask]);
- head->bkt = alt_bkt;
- head->prev = tail;
- head->prev_slot = i;
- head++;
- }
- tail++;
- }
-
- return -ENOSPC;
-}