Imported Upstream version 16.04

[deb_dpdk.git] / lib / librte_table / rte_table_stub.c

diff --git a/lib/librte_table/rte_table_stub.c b/lib/librte_table/rte_table_stub.c
new file mode 100644 (file)
index 0000000..691d681
--- /dev/null
+++ b/lib/librte_table/rte_table_stub.c
@@ -0,0 +1,121 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include <rte_mbuf.h>
+#include <rte_malloc.h>
+
+#include "rte_table_stub.h"
+
+#ifdef RTE_TABLE_STATS_COLLECT
+
+#define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val) \
+       table->stats.n_pkts_in += val
+#define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val) \
+       table->stats.n_pkts_lookup_miss += val
+
+#else
+
+#define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val)
+#define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val)
+
+#endif
+
+struct rte_table_stub {
+       struct rte_table_stats stats;
+};
+
+static void *
+rte_table_stub_create(__rte_unused void *params,
+               __rte_unused int socket_id,
+               __rte_unused uint32_t entry_size)
+{
+       struct rte_table_stub *stub;
+       uint32_t size;
+
+       size = sizeof(struct rte_table_stub);
+       stub = rte_zmalloc_socket("TABLE", size, RTE_CACHE_LINE_SIZE,
+               socket_id);
+       if (stub == NULL) {
+               RTE_LOG(ERR, TABLE,
+                       "%s: Cannot allocate %u bytes for stub table\n",
+                       __func__, size);
+               return NULL;
+       }
+
+       return stub;
+}
+
+static int
+rte_table_stub_lookup(
+       __rte_unused void *table,
+       __rte_unused struct rte_mbuf **pkts,
+       __rte_unused uint64_t pkts_mask,
+       uint64_t *lookup_hit_mask,
+       __rte_unused void **entries)
+{
+       __rte_unused struct rte_table_stub *stub = (struct rte_table_stub *) table;
+       __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+
+       RTE_TABLE_LPM_STATS_PKTS_IN_ADD(stub, n_pkts_in);
+       *lookup_hit_mask = 0;
+       RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(stub, n_pkts_in);
+
+       return 0;
+}
+
+static int
+rte_table_stub_stats_read(void *table, struct rte_table_stats *stats, int clear)
+{
+       struct rte_table_stub *t = (struct rte_table_stub *) table;
+
+       if (stats != NULL)
+               memcpy(stats, &t->stats, sizeof(t->stats));
+
+       if (clear)
+               memset(&t->stats, 0, sizeof(t->stats));
+
+       return 0;
+}
+
+struct rte_table_ops rte_table_stub_ops = {
+       .f_create = rte_table_stub_create,
+       .f_free = NULL,
+       .f_add = NULL,
+       .f_delete = NULL,
+       .f_add_bulk = NULL,
+       .f_delete_bulk = NULL,
+       .f_lookup = rte_table_stub_lookup,
+       .f_stats = rte_table_stub_stats_read,
+};