[PATCH v6 1/5] examples/l3fwd: fix port group mask generation

[<pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

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@dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Acked-by: Shijith Thotton <sthotton@marvell.com>
---
 v6 Changes:
 - Minor optimiazation to process_dst_port NEON.

 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