[EXT] [PATCH v5 1/5] examples/l3fwd: fix port group mask generation

[Shijith Thotton]

>
>Fix port group mask generation in altivec, vec_any_eq returns
>0 or 1 while port_groupx4 expects comparison mask result.
>
>Fixes: 2193b7467f7a ("examples/l3fwd: optimize packet processing on powerpc")
>Cc: stable at dpdk.org
>
>Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>

Acked-by: Shijith Thotton <sthotton at marvell.com>

>---
> v5 Changes:
> - Fix compilation errors.
>
> v4 Changes:
> - Fix missing `rte_free`.
>
> v3 Changes:
> - PPC optimize port mask generation.
> - Fix aarch32 compilation.
>
> v2 Changes:
> - Fix PPC, RISC-V, aarch32 compilation.
>
> examples/common/altivec/port_group.h | 11 ++++++++---
> 1 file changed, 8 insertions(+), 3 deletions(-)
>
>diff --git a/examples/common/altivec/port_group.h
>b/examples/common/altivec/port_group.h
>index 5e209b02fa..1c05bc025a 100644
>--- a/examples/common/altivec/port_group.h
>+++ b/examples/common/altivec/port_group.h
>@@ -26,12 +26,17 @@ port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp,
> 		uint16_t u16[FWDSTEP + 1];
> 		uint64_t u64;
> 	} *pnum = (void *)pn;
>-
>+	__vector unsigned long long result;
>+	const __vector unsigned int perm_mask = {0x00204060, 0x80808080,
>+						 0x80808080, 0x80808080};
> 	int32_t v;
>
>-	v = vec_any_eq(dp1, dp2);
>-
>+	dp1 = (__vector unsigned short)vec_cmpeq(dp1, dp2);
>+	dp1 = vec_mergeh(dp1, dp1);
>+	result = (__vector unsigned long long)vec_vbpermq(
>+		(__vector unsigned char)dp1, (__vector unsigned
>char)perm_mask);
>
>+	v = result[1];
> 	/* update last port counter. */
> 	lp[0] += gptbl[v].lpv;
>
>--
>2.25.1

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