Function rte_acl_gen

dpdk/lib/acl/acl_gen.c:447–532

* Generate the runtime structure using build structure */

 * Generate the runtime structure using build structure
 */
int
rte_acl_gen(struct rte_acl_ctx *ctx, struct rte_acl_trie *trie,
	struct rte_acl_bld_trie *node_bld_trie, uint32_t num_tries,
	uint32_t num_categories, uint32_t data_index_sz, size_t max_size)
{
	void *mem;
	size_t total_size;
	uint64_t *node_array, no_match;
	uint32_t n, match_index;
	struct rte_acl_match_results *match;
	struct acl_node_counters counts;
	struct rte_acl_indices indices;

	no_match = RTE_ACL_NODE_MATCH;

	/* Fill counts and indices arrays from the nodes. */
	acl_calc_counts_indices(&counts, &indices,
		node_bld_trie, num_tries, no_match);

	/* Allocate runtime memory (align to cache boundary) */
	total_size = RTE_ALIGN(data_index_sz, RTE_CACHE_LINE_SIZE) +
		indices.match_start * sizeof(uint64_t) +
		(counts.match + 1) * sizeof(struct rte_acl_match_results) +
		XMM_SIZE;

	if (total_size > max_size) {
		RTE_LOG(DEBUG, ACL,
			"Gen phase for ACL ctx \"%s\" exceeds max_size limit, "
			"bytes required: %zu, allowed: %zu\n",
			ctx->name, total_size, max_size);
		return -ERANGE;
	}

	mem = rte_zmalloc_socket(ctx->name, total_size, RTE_CACHE_LINE_SIZE,
			ctx->socket_id);
	if (mem == NULL) {
		RTE_LOG(ERR, ACL,
			"allocation of %zu bytes on socket %d for %s failed\n",
			total_size, ctx->socket_id, ctx->name);
		return -ENOMEM;
	}

	/* Fill the runtime structure */
	match_index = indices.match_start;
	node_array = (uint64_t *)((uintptr_t)mem +
		RTE_ALIGN(data_index_sz, RTE_CACHE_LINE_SIZE));

	/*
	 * Setup the NOMATCH node (a SINGLE at the
	 * highest index, that points to itself)
	 */

	node_array[RTE_ACL_DFA_SIZE] = RTE_ACL_IDLE_NODE;

	for (n = 0; n < RTE_ACL_DFA_SIZE; n++)
		node_array[n] = no_match;

	/* NOMATCH result at index 0 */