New upstream version 17.11-rc3

[deb_dpdk.git] / lib / librte_member / rte_member_x86.h

diff --git a/lib/librte_member/rte_member_x86.h b/lib/librte_member/rte_member_x86.h
new file mode 100644 (file)
index 0000000..d29dd3f
--- /dev/null
+++ b/lib/librte_member/rte_member_x86.h
@@ -0,0 +1,107 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2017 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.
+ */
+
+#ifndef _RTE_MEMBER_X86_H_
+#define _RTE_MEMBER_X86_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <x86intrin.h>
+
+#if defined(RTE_MACHINE_CPUFLAG_AVX2)
+
+static inline int
+update_entry_search_avx(uint32_t bucket_id, member_sig_t tmp_sig,
+               struct member_ht_bucket *buckets,
+               member_set_t set_id)
+{
+       uint32_t hitmask = _mm256_movemask_epi8((__m256i)_mm256_cmpeq_epi16(
+               _mm256_load_si256((__m256i const *)buckets[bucket_id].sigs),
+               _mm256_set1_epi16(tmp_sig)));
+       if (hitmask) {
+               uint32_t hit_idx = __builtin_ctzl(hitmask) >> 1;
+               buckets[bucket_id].sets[hit_idx] = set_id;
+               return 1;
+       }
+       return 0;
+}
+
+static inline int
+search_bucket_single_avx(uint32_t bucket_id, member_sig_t tmp_sig,
+               struct member_ht_bucket *buckets,
+               member_set_t *set_id)
+{
+       uint32_t hitmask = _mm256_movemask_epi8((__m256i)_mm256_cmpeq_epi16(
+               _mm256_load_si256((__m256i const *)buckets[bucket_id].sigs),
+               _mm256_set1_epi16(tmp_sig)));
+       while (hitmask) {
+               uint32_t hit_idx = __builtin_ctzl(hitmask) >> 1;
+               if (buckets[bucket_id].sets[hit_idx] != RTE_MEMBER_NO_MATCH) {
+                       *set_id = buckets[bucket_id].sets[hit_idx];
+                       return 1;
+               }
+               hitmask &= ~(3U << ((hit_idx) << 1));
+       }
+       return 0;
+}
+
+static inline void
+search_bucket_multi_avx(uint32_t bucket_id, member_sig_t tmp_sig,
+                               struct member_ht_bucket *buckets,
+                               uint32_t *counter,
+                               uint32_t match_per_key,
+                               member_set_t *set_id)
+{
+       uint32_t hitmask = _mm256_movemask_epi8((__m256i)_mm256_cmpeq_epi16(
+               _mm256_load_si256((__m256i const *)buckets[bucket_id].sigs),
+               _mm256_set1_epi16(tmp_sig)));
+       while (hitmask) {
+               uint32_t hit_idx = __builtin_ctzl(hitmask) >> 1;
+               if (buckets[bucket_id].sets[hit_idx] != RTE_MEMBER_NO_MATCH) {
+                       set_id[*counter] = buckets[bucket_id].sets[hit_idx];
+                       (*counter)++;
+                       if (*counter >= match_per_key)
+                               return;
+               }
+               hitmask &= ~(3U << ((hit_idx) << 1));
+       }
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_MEMBER_X86_H_ */