b13fb77583
rte_xmm_t is a union type which wraps around xmm_t and maps its contents
to scalar structures. Since C++ has stricter type conversion rules than
C, the rte_xmm_t::x has to be used instead of C-casting.
The generated assembly is identical to the code without the fix (checked
both on x86 and RISC-V).
Fixes: 406937f89f ("lpm: add scalar version of lookupx4")
Signed-off-by: Stanislaw Kardach <kda@semihalf.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
39 lines
796 B
C
39 lines
796 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2022 StarFive
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* Copyright(c) 2022 SiFive
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* Copyright(c) 2022 Semihalf
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*/
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#ifndef _RTE_LPM_SCALAR_H_
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#define _RTE_LPM_SCALAR_H_
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#include <rte_vect.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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static inline void
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rte_lpm_lookupx4(const struct rte_lpm *lpm, xmm_t ip, uint32_t hop[4],
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uint32_t defv)
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{
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rte_xmm_t xip = { .x = ip };
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uint32_t nh;
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int ret;
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ret = rte_lpm_lookup(lpm, xip.u32[0], &nh);
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hop[0] = (ret == 0) ? nh : defv;
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ret = rte_lpm_lookup(lpm, xip.u32[1], &nh);
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hop[1] = (ret == 0) ? nh : defv;
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ret = rte_lpm_lookup(lpm, xip.u32[2], &nh);
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hop[2] = (ret == 0) ? nh : defv;
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ret = rte_lpm_lookup(lpm, xip.u32[3], &nh);
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hop[3] = (ret == 0) ? nh : defv;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RTE_LPM_SCALAR_H_ */
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