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

[Pavan Nikhilesh Bhagavatula]

> -----Original Message-----
> From: Shijith Thotton <sthotton at marvell.com>
> Sent: Monday, October 17, 2022 5:36 PM
> To: Pavan Nikhilesh Bhagavatula <pbhagavatula at marvell.com>; Jerin Jacob
> Kollanukkaran <jerinj at marvell.com>; David Christensen
> <drc at linux.vnet.ibm.com>
> Cc: dev at dpdk.org; Pavan Nikhilesh Bhagavatula
> <pbhagavatula at marvell.com>; stable at dpdk.org
> Subject: RE: [EXT] [PATCH v5 1/5] examples/l3fwd: fix port group mask
> generation
> 
> >
> >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>
> 

Thomas, 

Will this series make it into 22.11 release?

> >---
> > 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