c0de0eb82e
This is the main switch over between the legacy API and the new burst API. We rename all the functions in rte_distributor.c to remove the _v1705, and we add in _v20 in the rte_distributor_v20.c We also rename the rte_distributor_next.h as rte_distributor.h, as this is now the public header. At the same time, we need the autotests and sample app to compile properly, hence those changes are in this patch also. Signed-off-by: David Hunt <david.hunt@intel.com> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2017 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rte_mbuf.h>
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#include "rte_distributor_private.h"
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#include "rte_distributor.h"
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#include "smmintrin.h"
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#include "nmmintrin.h"
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void
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find_match_vec(struct rte_distributor *d,
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uint16_t *data_ptr,
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uint16_t *output_ptr)
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{
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/* Setup */
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__m128i incoming_fids;
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__m128i inflight_fids;
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__m128i preflight_fids;
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__m128i wkr;
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__m128i mask1;
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__m128i mask2;
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__m128i output;
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struct rte_distributor_backlog *bl;
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uint16_t i;
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/*
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* Function overview:
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* 2. Loop through all worker ID's
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* 2a. Load the current inflights for that worker into an xmm reg
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* 2b. Load the current backlog for that worker into an xmm reg
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* 2c. use cmpestrm to intersect flow_ids with backlog and inflights
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* 2d. Add any matches to the output
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* 3. Write the output xmm (matching worker ids).
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*/
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output = _mm_set1_epi16(0);
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incoming_fids = _mm_load_si128((__m128i *)data_ptr);
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for (i = 0; i < d->num_workers; i++) {
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bl = &d->backlog[i];
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inflight_fids =
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_mm_load_si128((__m128i *)&(d->in_flight_tags[i]));
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preflight_fids =
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_mm_load_si128((__m128i *)(bl->tags));
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/*
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* Any incoming_fid that exists anywhere in inflight_fids will
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* have 0xffff in same position of the mask as the incoming fid
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* Example (shortened to bytes for brevity):
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* incoming_fids 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08
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* inflight_fids 0x03 0x05 0x07 0x00 0x00 0x00 0x00 0x00
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* mask 0x00 0x00 0xff 0x00 0xff 0x00 0xff 0x00
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*/
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mask1 = _mm_cmpestrm(inflight_fids, 8, incoming_fids, 8,
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_SIDD_UWORD_OPS |
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_SIDD_CMP_EQUAL_ANY |
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_SIDD_UNIT_MASK);
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mask2 = _mm_cmpestrm(preflight_fids, 8, incoming_fids, 8,
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_SIDD_UWORD_OPS |
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_SIDD_CMP_EQUAL_ANY |
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_SIDD_UNIT_MASK);
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mask1 = _mm_or_si128(mask1, mask2);
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/*
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* Now mask contains 0xffff where there's a match.
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* Next we need to store the worker_id in the relevant position
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* in the output.
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*/
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wkr = _mm_set1_epi16(i+1);
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mask1 = _mm_and_si128(mask1, wkr);
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output = _mm_or_si128(mask1, output);
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}
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/*
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* At this stage, the output 128-bit contains 8 16-bit values, with
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* each non-zero value containing the worker ID on which the
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* corresponding flow is pinned to.
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*/
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_mm_store_si128((__m128i *)output_ptr, output);
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}
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