--- /dev/null
+/*-
+ * 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 "acl_run_sse.h"
+
+static const rte_ymm_t ymm_match_mask = {
+ .u32 = {
+ RTE_ACL_NODE_MATCH,
+ RTE_ACL_NODE_MATCH,
+ RTE_ACL_NODE_MATCH,
+ RTE_ACL_NODE_MATCH,
+ RTE_ACL_NODE_MATCH,
+ RTE_ACL_NODE_MATCH,
+ RTE_ACL_NODE_MATCH,
+ RTE_ACL_NODE_MATCH,
+ },
+};
+
+static const rte_ymm_t ymm_index_mask = {
+ .u32 = {
+ RTE_ACL_NODE_INDEX,
+ RTE_ACL_NODE_INDEX,
+ RTE_ACL_NODE_INDEX,
+ RTE_ACL_NODE_INDEX,
+ RTE_ACL_NODE_INDEX,
+ RTE_ACL_NODE_INDEX,
+ RTE_ACL_NODE_INDEX,
+ RTE_ACL_NODE_INDEX,
+ },
+};
+
+static const rte_ymm_t ymm_shuffle_input = {
+ .u32 = {
+ 0x00000000, 0x04040404, 0x08080808, 0x0c0c0c0c,
+ 0x00000000, 0x04040404, 0x08080808, 0x0c0c0c0c,
+ },
+};
+
+static const rte_ymm_t ymm_ones_16 = {
+ .u16 = {
+ 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1,
+ },
+};
+
+static const rte_ymm_t ymm_range_base = {
+ .u32 = {
+ 0xffffff00, 0xffffff04, 0xffffff08, 0xffffff0c,
+ 0xffffff00, 0xffffff04, 0xffffff08, 0xffffff0c,
+ },
+};
+
+/*
+ * Process 8 transitions in parallel.
+ * tr_lo contains low 32 bits for 8 transition.
+ * tr_hi contains high 32 bits for 8 transition.
+ * next_input contains up to 4 input bytes for 8 flows.
+ */
+static inline __attribute__((always_inline)) ymm_t
+transition8(ymm_t next_input, const uint64_t *trans, ymm_t *tr_lo, ymm_t *tr_hi)
+{
+ const int32_t *tr;
+ ymm_t addr;
+
+ tr = (const int32_t *)(uintptr_t)trans;
+
+ /* Calculate the address (array index) for all 8 transitions. */
+ ACL_TR_CALC_ADDR(mm256, 256, addr, ymm_index_mask.y, next_input,
+ ymm_shuffle_input.y, ymm_ones_16.y, ymm_range_base.y,
+ *tr_lo, *tr_hi);
+
+ /* load lower 32 bits of 8 transactions at once. */
+ *tr_lo = _mm256_i32gather_epi32(tr, addr, sizeof(trans[0]));
+
+ next_input = _mm256_srli_epi32(next_input, CHAR_BIT);
+
+ /* load high 32 bits of 8 transactions at once. */
+ *tr_hi = _mm256_i32gather_epi32(tr + 1, addr, sizeof(trans[0]));
+
+ return next_input;
+}
+
+/*
+ * Process matches for 8 flows.
+ * tr_lo contains low 32 bits for 8 transition.
+ * tr_hi contains high 32 bits for 8 transition.
+ */
+static inline void
+acl_process_matches_avx2x8(const struct rte_acl_ctx *ctx,
+ struct parms *parms, struct acl_flow_data *flows, uint32_t slot,
+ ymm_t matches, ymm_t *tr_lo, ymm_t *tr_hi)
+{
+ ymm_t t0, t1;
+ ymm_t lo, hi;
+ xmm_t l0, l1;
+ uint32_t i;
+ uint64_t tr[MAX_SEARCHES_SSE8];
+
+ l1 = _mm256_extracti128_si256(*tr_lo, 1);
+ l0 = _mm256_castsi256_si128(*tr_lo);
+
+ for (i = 0; i != RTE_DIM(tr) / 2; i++) {
+
+ /*
+ * Extract low 32bits of each transition.
+ * That's enough to process the match.
+ */
+ tr[i] = (uint32_t)_mm_cvtsi128_si32(l0);
+ tr[i + 4] = (uint32_t)_mm_cvtsi128_si32(l1);
+
+ l0 = _mm_srli_si128(l0, sizeof(uint32_t));
+ l1 = _mm_srli_si128(l1, sizeof(uint32_t));
+
+ tr[i] = acl_match_check(tr[i], slot + i,
+ ctx, parms, flows, resolve_priority_sse);
+ tr[i + 4] = acl_match_check(tr[i + 4], slot + i + 4,
+ ctx, parms, flows, resolve_priority_sse);
+ }
+
+ /* Collect new transitions into 2 YMM registers. */
+ t0 = _mm256_set_epi64x(tr[5], tr[4], tr[1], tr[0]);
+ t1 = _mm256_set_epi64x(tr[7], tr[6], tr[3], tr[2]);
+
+ /* For each transition: put low 32 into tr_lo and high 32 into tr_hi */
+ ACL_TR_HILO(mm256, __m256, t0, t1, lo, hi);
+
+ /* Keep transitions wth NOMATCH intact. */
+ *tr_lo = _mm256_blendv_epi8(*tr_lo, lo, matches);
+ *tr_hi = _mm256_blendv_epi8(*tr_hi, hi, matches);
+}
+
+static inline void
+acl_match_check_avx2x8(const struct rte_acl_ctx *ctx, struct parms *parms,
+ struct acl_flow_data *flows, uint32_t slot,
+ ymm_t *tr_lo, ymm_t *tr_hi, ymm_t match_mask)
+{
+ uint32_t msk;
+ ymm_t matches, temp;
+
+ /* test for match node */
+ temp = _mm256_and_si256(match_mask, *tr_lo);
+ matches = _mm256_cmpeq_epi32(temp, match_mask);
+ msk = _mm256_movemask_epi8(matches);
+
+ while (msk != 0) {
+
+ acl_process_matches_avx2x8(ctx, parms, flows, slot,
+ matches, tr_lo, tr_hi);
+ temp = _mm256_and_si256(match_mask, *tr_lo);
+ matches = _mm256_cmpeq_epi32(temp, match_mask);
+ msk = _mm256_movemask_epi8(matches);
+ }
+}
+
+/*
+ * Execute trie traversal for up to 16 flows in parallel.
+ */
+static inline int
+search_avx2x16(const struct rte_acl_ctx *ctx, const uint8_t **data,
+ uint32_t *results, uint32_t total_packets, uint32_t categories)
+{
+ uint32_t n;
+ struct acl_flow_data flows;
+ uint64_t index_array[MAX_SEARCHES_AVX16];
+ struct completion cmplt[MAX_SEARCHES_AVX16];
+ struct parms parms[MAX_SEARCHES_AVX16];
+ ymm_t input[2], tr_lo[2], tr_hi[2];
+ ymm_t t0, t1;
+
+ acl_set_flow(&flows, cmplt, RTE_DIM(cmplt), data, results,
+ total_packets, categories, ctx->trans_table);
+
+ for (n = 0; n < RTE_DIM(cmplt); n++) {
+ cmplt[n].count = 0;
+ index_array[n] = acl_start_next_trie(&flows, parms, n, ctx);
+ }
+
+ t0 = _mm256_set_epi64x(index_array[5], index_array[4],
+ index_array[1], index_array[0]);
+ t1 = _mm256_set_epi64x(index_array[7], index_array[6],
+ index_array[3], index_array[2]);
+
+ ACL_TR_HILO(mm256, __m256, t0, t1, tr_lo[0], tr_hi[0]);
+
+ t0 = _mm256_set_epi64x(index_array[13], index_array[12],
+ index_array[9], index_array[8]);
+ t1 = _mm256_set_epi64x(index_array[15], index_array[14],
+ index_array[11], index_array[10]);
+
+ ACL_TR_HILO(mm256, __m256, t0, t1, tr_lo[1], tr_hi[1]);
+
+ /* Check for any matches. */
+ acl_match_check_avx2x8(ctx, parms, &flows, 0, &tr_lo[0], &tr_hi[0],
+ ymm_match_mask.y);
+ acl_match_check_avx2x8(ctx, parms, &flows, 8, &tr_lo[1], &tr_hi[1],
+ ymm_match_mask.y);
+
+ while (flows.started > 0) {
+
+ uint32_t in[MAX_SEARCHES_SSE8];
+
+ /* Gather 4 bytes of input data for first 8 flows. */
+ in[0] = GET_NEXT_4BYTES(parms, 0);
+ in[4] = GET_NEXT_4BYTES(parms, 4);
+ in[1] = GET_NEXT_4BYTES(parms, 1);
+ in[5] = GET_NEXT_4BYTES(parms, 5);
+ in[2] = GET_NEXT_4BYTES(parms, 2);
+ in[6] = GET_NEXT_4BYTES(parms, 6);
+ in[3] = GET_NEXT_4BYTES(parms, 3);
+ in[7] = GET_NEXT_4BYTES(parms, 7);
+ input[0] = _mm256_set_epi32(in[7], in[6], in[5], in[4],
+ in[3], in[2], in[1], in[0]);
+
+ /* Gather 4 bytes of input data for last 8 flows. */
+ in[0] = GET_NEXT_4BYTES(parms, 8);
+ in[4] = GET_NEXT_4BYTES(parms, 12);
+ in[1] = GET_NEXT_4BYTES(parms, 9);
+ in[5] = GET_NEXT_4BYTES(parms, 13);
+ in[2] = GET_NEXT_4BYTES(parms, 10);
+ in[6] = GET_NEXT_4BYTES(parms, 14);
+ in[3] = GET_NEXT_4BYTES(parms, 11);
+ in[7] = GET_NEXT_4BYTES(parms, 15);
+ input[1] = _mm256_set_epi32(in[7], in[6], in[5], in[4],
+ in[3], in[2], in[1], in[0]);
+
+ input[0] = transition8(input[0], flows.trans,
+ &tr_lo[0], &tr_hi[0]);
+ input[1] = transition8(input[1], flows.trans,
+ &tr_lo[1], &tr_hi[1]);
+
+ input[0] = transition8(input[0], flows.trans,
+ &tr_lo[0], &tr_hi[0]);
+ input[1] = transition8(input[1], flows.trans,
+ &tr_lo[1], &tr_hi[1]);
+
+ input[0] = transition8(input[0], flows.trans,
+ &tr_lo[0], &tr_hi[0]);
+ input[1] = transition8(input[1], flows.trans,
+ &tr_lo[1], &tr_hi[1]);
+
+ input[0] = transition8(input[0], flows.trans,
+ &tr_lo[0], &tr_hi[0]);
+ input[1] = transition8(input[1], flows.trans,
+ &tr_lo[1], &tr_hi[1]);
+
+ /* Check for any matches. */
+ acl_match_check_avx2x8(ctx, parms, &flows, 0,
+ &tr_lo[0], &tr_hi[0], ymm_match_mask.y);
+ acl_match_check_avx2x8(ctx, parms, &flows, 8,
+ &tr_lo[1], &tr_hi[1], ymm_match_mask.y);
+ }
+
+ return 0;
+}
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