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authorC.J. Collier <cjcollier@linuxfoundation.org>2016-06-14 07:54:47 -0700
committerC.J. Collier <cjcollier@linuxfoundation.org>2016-06-14 07:55:43 -0700
commit5129044dce1f85ce4950f31bcf90f3886466f06a (patch)
tree1c6269614c0c15ffef8451c58ae8f8b30a1bc804 /lib/librte_acl/acl_vect.h
parente04be89c2409570e0055b2cda60bd11395bb93b0 (diff)
Imported upstream release 16.04
* gbp import-orig ../dpdk-16.04.tar.xz Change-Id: Iac2196db782ba322f6974d8a752acc34ce5024c3 Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>
Diffstat (limited to 'lib/librte_acl/acl_vect.h')
-rw-r--r--lib/librte_acl/acl_vect.h116
1 files changed, 116 insertions, 0 deletions
diff --git a/lib/librte_acl/acl_vect.h b/lib/librte_acl/acl_vect.h
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+/*-
+ * 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.
+ */
+
+#ifndef _RTE_ACL_VECT_H_
+#define _RTE_ACL_VECT_H_
+
+/**
+ * @file
+ *
+ * RTE ACL SSE/AVX related header.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*
+ * Takes 2 SIMD registers containing N transitions eachi (tr0, tr1).
+ * Shuffles it into different representation:
+ * lo - contains low 32 bits of given N transitions.
+ * hi - contains high 32 bits of given N transitions.
+ */
+#define ACL_TR_HILO(P, TC, tr0, tr1, lo, hi) do { \
+ lo = (typeof(lo))_##P##_shuffle_ps((TC)(tr0), (TC)(tr1), 0x88); \
+ hi = (typeof(hi))_##P##_shuffle_ps((TC)(tr0), (TC)(tr1), 0xdd); \
+} while (0)
+
+
+/*
+ * Calculate the address of the next transition for
+ * all types of nodes. Note that only DFA nodes and range
+ * nodes actually transition to another node. Match
+ * nodes not supposed to be encountered here.
+ * For quad range nodes:
+ * Calculate number of range boundaries that are less than the
+ * input value. Range boundaries for each node are in signed 8 bit,
+ * ordered from -128 to 127.
+ * This is effectively a popcnt of bytes that are greater than the
+ * input byte.
+ * Single nodes are processed in the same ways as quad range nodes.
+*/
+#define ACL_TR_CALC_ADDR(P, S, \
+ addr, index_mask, next_input, shuffle_input, \
+ ones_16, range_base, tr_lo, tr_hi) do { \
+ \
+ typeof(addr) in, node_type, r, t; \
+ typeof(addr) dfa_msk, dfa_ofs, quad_ofs; \
+ \
+ t = _##P##_xor_si##S(index_mask, index_mask); \
+ in = _##P##_shuffle_epi8(next_input, shuffle_input); \
+ \
+ /* Calc node type and node addr */ \
+ node_type = _##P##_andnot_si##S(index_mask, tr_lo); \
+ addr = _##P##_and_si##S(index_mask, tr_lo); \
+ \
+ /* mask for DFA type(0) nodes */ \
+ dfa_msk = _##P##_cmpeq_epi32(node_type, t); \
+ \
+ /* DFA calculations. */ \
+ r = _##P##_srli_epi32(in, 30); \
+ r = _##P##_add_epi8(r, range_base); \
+ t = _##P##_srli_epi32(in, 24); \
+ r = _##P##_shuffle_epi8(tr_hi, r); \
+ \
+ dfa_ofs = _##P##_sub_epi32(t, r); \
+ \
+ /* QUAD/SINGLE caluclations. */ \
+ t = _##P##_cmpgt_epi8(in, tr_hi); \
+ t = _##P##_sign_epi8(t, t); \
+ t = _##P##_maddubs_epi16(t, t); \
+ quad_ofs = _##P##_madd_epi16(t, ones_16); \
+ \
+ /* blend DFA and QUAD/SINGLE. */ \
+ t = _##P##_blendv_epi8(quad_ofs, dfa_ofs, dfa_msk); \
+ \
+ /* calculate address for next transitions. */ \
+ addr = _##P##_add_epi32(addr, t); \
+} while (0)
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_ACL_VECT_H_ */