[dpdk-dev] [PATCH v6 0/9] enable lpm, acl and other missing libraries in ppc64le

[dpdk-dev] [PATCH v6 0/9] enable lpm, acl and other missing libraries in ppc64le

[Gowrishankar Muthukrishnan]

This patchset enables LPM, ACL and other few missing libs in ppc64le and also
address few patches in related examples (ip_pipeline and l3fwd).

Test report:
1. LPM and ACL unit tests passed.
   Steps:
   compile test app and run (with any needed params)
   lpm_autotest
   acl_autotest
   table_autotest
     test_table_lpm_combined fails same as in intel in current master.

2. Example ip_pipeline application verified for port forwarding.
   compile examples/ip_pipeline (adjust app_init_core_map
     param for ht to 1 in case of ppc64le in SMT=off mode).
   modify config/l3fwd.cfg as per enabled PMD ports.
   run ip_pipeline with config file option and check packets fwd.

v6 changes:
- added cache alignment fix for rte hash table structs.

v5 changes:
- no change in lpm lib enablement
- no change in acl lib enablement
- config file changes individually for sched,table,port,pipeline
  lib enablement
- ip_pipeline patch description and changes flagged only for ppc64le.
   app_init_core_map changes removed (due to bug found and under 
   investigation only on ppc64le/smt=off case).

v4 changes:
- fix transition4 in acl_run_altivec.h for gcc strict-aliasing error.
  Thanks to Chao Zhu for bringing up.

v3 changes:
- rebase over master to fix conflict in examples/l3fwd/l3fwd_em.c

v2 changes:
- enabling libs in config included as part of lib changes itself.

Gowrishankar Muthukrishnan (9):
  lpm: add altivec intrinsics for dpdk lpm on ppc_64
  acl: add altivec intrinsics for dpdk acl on ppc_64
  l3fwd: add altivec support for em_hash_key
  table: enable table library for ppc64le
  sched: enable sched library for ppc64le
  port: enable port library for ppc64le
  pipeline: enable pipeline library for ppc64le
  ip_pipeline: fix lcore mapping for varying SMT threads as in ppc64
  table: align rte table hash structs for cache line size

 app/test-acl/main.c                                |   4 +
 app/test/test_xmmt_ops.h                           |  16 +
 config/defconfig_ppc_64-power8-linuxapp-gcc        |   7 -
 examples/ip_pipeline/cpu_core_map.c                |   8 +
 examples/l3fwd/l3fwd_em.c                          |  10 +-
 lib/librte_acl/Makefile                            |   2 +
 lib/librte_acl/acl.h                               |   4 +
 lib/librte_acl/acl_run.h                           |   2 +
 lib/librte_acl/acl_run_altivec.c                   |  47 +++
 lib/librte_acl/acl_run_altivec.h                   | 329 +++++++++++++++++++++
 lib/librte_acl/rte_acl.c                           |  13 +
 lib/librte_acl/rte_acl.h                           |   1 +
 .../common/include/arch/ppc_64/rte_vect.h          |  60 ++++
 lib/librte_lpm/Makefile                            |   2 +
 lib/librte_lpm/rte_lpm.h                           |   2 +
 lib/librte_lpm/rte_lpm_altivec.h                   | 154 ++++++++++
 lib/librte_table/rte_table_hash_key16.c            |   4 +-
 lib/librte_table/rte_table_hash_key32.c            |   4 +-
 lib/librte_table/rte_table_hash_key8.c             |   2 +-
 19 files changed, 658 insertions(+), 13 deletions(-)
 create mode 100644 lib/librte_acl/acl_run_altivec.c
 create mode 100644 lib/librte_acl/acl_run_altivec.h
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_vect.h
 create mode 100644 lib/librte_lpm/rte_lpm_altivec.h

-- 
1.9.1

[dpdk-dev] [PATCH v6 1/9] lpm: add altivec intrinsics for dpdk lpm on ppc_64

[Gowrishankar Muthukrishnan]

This patch adds ppc64le port for LPM library in DPDK.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 app/test/test_xmmt_ops.h                           |  16 +++
 config/defconfig_ppc_64-power8-linuxapp-gcc        |   1 -
 .../common/include/arch/ppc_64/rte_vect.h          |  60 ++++++++
 lib/librte_lpm/Makefile                            |   2 +
 lib/librte_lpm/rte_lpm.h                           |   2 +
 lib/librte_lpm/rte_lpm_altivec.h                   | 154 +++++++++++++++++++++
 6 files changed, 234 insertions(+), 1 deletion(-)
 create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_vect.h
 create mode 100644 lib/librte_lpm/rte_lpm_altivec.h

diff --git a/app/test/test_xmmt_ops.h b/app/test/test_xmmt_ops.h
index de9c16f..42174d2 100644
--- a/app/test/test_xmmt_ops.h
+++ b/app/test/test_xmmt_ops.h
@@ -62,6 +62,22 @@ vect_set_epi32(int i3, int i2, int i1, int i0)
 /* sets the 4 signed 32-bit integer values and returns the xmm_t variable */
 #define vect_set_epi32(i3, i2, i1, i0) _mm_set_epi32(i3, i2, i1, i0)
 
+#elif defined(RTE_ARCH_PPC_64)
+
+/* vect_* abstraction implementation using ALTIVEC */
+
+/* loads the xmm_t value from address p(does not need to be 16-byte aligned)*/
+#define vect_loadu_sil128(p) vec_ld(0, p)
+
+/* sets the 4 signed 32-bit integer values and returns the xmm_t variable */
+static inline xmm_t  __attribute__((always_inline))
+vect_set_epi32(int i3, int i2, int i1, int i0)
+{
+	xmm_t data = (xmm_t){i0, i1, i2, i3};
+
+	return data;
+}
+
 #endif
 
 #endif /* _TEST_XMMT_OPS_H_ */
diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index bef8f49..9ddf3c5 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -57,7 +57,6 @@ CONFIG_RTE_LIBRTE_ENIC_PMD=n
 CONFIG_RTE_LIBRTE_FM10K_PMD=n
 
 # This following libraries are not available on Power. So they're turned off.
-CONFIG_RTE_LIBRTE_LPM=n
 CONFIG_RTE_LIBRTE_ACL=n
 CONFIG_RTE_LIBRTE_SCHED=n
 CONFIG_RTE_LIBRTE_PORT=n
diff --git a/lib/librte_eal/common/include/arch/ppc_64/rte_vect.h b/lib/librte_eal/common/include/arch/ppc_64/rte_vect.h
new file mode 100644
index 0000000..05209e5
--- /dev/null
+++ b/lib/librte_eal/common/include/arch/ppc_64/rte_vect.h
@@ -0,0 +1,60 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) IBM Corporation 2016.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of IBM Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _RTE_VECT_PPC_64_H_
+#define _RTE_VECT_PPC_64_H_
+
+#include <altivec.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef vector signed int xmm_t;
+
+#define	XMM_SIZE	(sizeof(xmm_t))
+#define	XMM_MASK	(XMM_SIZE - 1)
+
+typedef union rte_xmm {
+	xmm_t    x;
+	uint8_t  u8[XMM_SIZE / sizeof(uint8_t)];
+	uint16_t u16[XMM_SIZE / sizeof(uint16_t)];
+	uint32_t u32[XMM_SIZE / sizeof(uint32_t)];
+	uint64_t u64[XMM_SIZE / sizeof(uint64_t)];
+	double   pd[XMM_SIZE / sizeof(double)];
+} __attribute__((aligned(16))) rte_xmm_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_VECT_PPC_64_H_ */
diff --git a/lib/librte_lpm/Makefile b/lib/librte_lpm/Makefile
index 656ade2..3dc549d 100644
--- a/lib/librte_lpm/Makefile
+++ b/lib/librte_lpm/Makefile
@@ -51,6 +51,8 @@ ifneq ($(filter y,$(CONFIG_RTE_ARCH_ARM) $(CONFIG_RTE_ARCH_ARM64)),)
 SYMLINK-$(CONFIG_RTE_LIBRTE_LPM)-include += rte_lpm_neon.h
 else ifeq ($(CONFIG_RTE_ARCH_X86),y)
 SYMLINK-$(CONFIG_RTE_LIBRTE_LPM)-include += rte_lpm_sse.h
+else ifeq ($(CONFIG_RTE_ARCH_PPC_64),y)
+SYMLINK-$(CONFIG_RTE_LIBRTE_LPM)-include += rte_lpm_altivec.h
 endif
 
 # this lib needs eal
diff --git a/lib/librte_lpm/rte_lpm.h b/lib/librte_lpm/rte_lpm.h
index 2df1d67..dbe5483 100644
--- a/lib/librte_lpm/rte_lpm.h
+++ b/lib/librte_lpm/rte_lpm.h
@@ -480,6 +480,8 @@ rte_lpm_lookupx4(const struct rte_lpm *lpm, xmm_t ip, uint32_t hop[4],
 
 #if defined(RTE_ARCH_ARM) || defined(RTE_ARCH_ARM64)
 #include "rte_lpm_neon.h"
+#elif defined(RTE_ARCH_PPC_64)
+#include "rte_lpm_altivec.h"
 #else
 #include "rte_lpm_sse.h"
 #endif
diff --git a/lib/librte_lpm/rte_lpm_altivec.h b/lib/librte_lpm/rte_lpm_altivec.h
new file mode 100644
index 0000000..e26e087
--- /dev/null
+++ b/lib/librte_lpm/rte_lpm_altivec.h
@@ -0,0 +1,154 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) IBM Corporation 2016.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of IBM Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _RTE_LPM_ALTIVEC_H_
+#define _RTE_LPM_ALTIVEC_H_
+
+#include <rte_branch_prediction.h>
+#include <rte_byteorder.h>
+#include <rte_common.h>
+#include <rte_vect.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+static inline void
+rte_lpm_lookupx4(const struct rte_lpm *lpm, xmm_t ip, uint32_t hop[4],
+	uint32_t defv)
+{
+	vector signed int i24;
+	rte_xmm_t i8;
+	uint32_t tbl[4];
+	uint64_t idx, pt, pt2;
+	const uint32_t *ptbl;
+
+	const uint32_t mask = UINT8_MAX;
+	const vector signed int mask8 = (xmm_t){mask, mask, mask, mask};
+
+	/*
+	 * RTE_LPM_VALID_EXT_ENTRY_BITMASK for 2 LPM entries
+	 * as one 64-bit value (0x0300000003000000).
+	 */
+	const uint64_t mask_xv =
+		((uint64_t)RTE_LPM_VALID_EXT_ENTRY_BITMASK |
+		(uint64_t)RTE_LPM_VALID_EXT_ENTRY_BITMASK << 32);
+
+	/*
+	 * RTE_LPM_LOOKUP_SUCCESS for 2 LPM entries
+	 * as one 64-bit value (0x0100000001000000).
+	 */
+	const uint64_t mask_v =
+		((uint64_t)RTE_LPM_LOOKUP_SUCCESS |
+		(uint64_t)RTE_LPM_LOOKUP_SUCCESS << 32);
+
+	/* get 4 indexes for tbl24[]. */
+	i24 = vec_sr((xmm_t) ip,
+		(vector unsigned int){CHAR_BIT, CHAR_BIT, CHAR_BIT, CHAR_BIT});
+
+	/* extract values from tbl24[] */
+	idx = (uint32_t)i24[0];
+	idx = idx < (1<<24) ? idx : (1<<24)-1;
+	ptbl = (const uint32_t *)&lpm->tbl24[idx];
+	tbl[0] = *ptbl;
+
+	idx = (uint32_t) i24[1];
+	idx = idx < (1<<24) ? idx : (1<<24)-1;
+	ptbl = (const uint32_t *)&lpm->tbl24[idx];
+	tbl[1] = *ptbl;
+
+	idx = (uint32_t) i24[2];
+	idx = idx < (1<<24) ? idx : (1<<24)-1;
+	ptbl = (const uint32_t *)&lpm->tbl24[idx];
+	tbl[2] = *ptbl;
+
+	idx = (uint32_t) i24[3];
+	idx = idx < (1<<24) ? idx : (1<<24)-1;
+	ptbl = (const uint32_t *)&lpm->tbl24[idx];
+	tbl[3] = *ptbl;
+
+	/* get 4 indexes for tbl8[]. */
+	i8.x = vec_and(ip, mask8);
+
+	pt = (uint64_t)tbl[0] |
+		(uint64_t)tbl[1] << 32;
+	pt2 = (uint64_t)tbl[2] |
+		(uint64_t)tbl[3] << 32;
+
+	/* search successfully finished for all 4 IP addresses. */
+	if (likely((pt & mask_xv) == mask_v) &&
+			likely((pt2 & mask_xv) == mask_v)) {
+		*(uint64_t *)hop = pt & RTE_LPM_MASKX4_RES;
+		*(uint64_t *)(hop + 2) = pt2 & RTE_LPM_MASKX4_RES;
+		return;
+	}
+
+	if (unlikely((pt & RTE_LPM_VALID_EXT_ENTRY_BITMASK) ==
+			RTE_LPM_VALID_EXT_ENTRY_BITMASK)) {
+		i8.u32[0] = i8.u32[0] +
+			(uint8_t)tbl[0] * RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
+		ptbl = (const uint32_t *)&lpm->tbl8[i8.u32[0]];
+		tbl[0] = *ptbl;
+	}
+	if (unlikely((pt >> 32 & RTE_LPM_VALID_EXT_ENTRY_BITMASK) ==
+			RTE_LPM_VALID_EXT_ENTRY_BITMASK)) {
+		i8.u32[1] = i8.u32[1] +
+			(uint8_t)tbl[1] * RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
+		ptbl = (const uint32_t *)&lpm->tbl8[i8.u32[1]];
+		tbl[1] = *ptbl;
+	}
+	if (unlikely((pt2 & RTE_LPM_VALID_EXT_ENTRY_BITMASK) ==
+			RTE_LPM_VALID_EXT_ENTRY_BITMASK)) {
+		i8.u32[2] = i8.u32[2] +
+			(uint8_t)tbl[2] * RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
+		ptbl = (const uint32_t *)&lpm->tbl8[i8.u32[2]];
+		tbl[2] = *ptbl;
+	}
+	if (unlikely((pt2 >> 32 & RTE_LPM_VALID_EXT_ENTRY_BITMASK) ==
+			RTE_LPM_VALID_EXT_ENTRY_BITMASK)) {
+		i8.u32[3] = i8.u32[3] +
+			(uint8_t)tbl[3] * RTE_LPM_TBL8_GROUP_NUM_ENTRIES;
+		ptbl = (const uint32_t *)&lpm->tbl8[i8.u32[3]];
+		tbl[3] = *ptbl;
+	}
+
+	hop[0] = (tbl[0] & RTE_LPM_LOOKUP_SUCCESS) ? tbl[0] & 0x00FFFFFF : defv;
+	hop[1] = (tbl[1] & RTE_LPM_LOOKUP_SUCCESS) ? tbl[1] & 0x00FFFFFF : defv;
+	hop[2] = (tbl[2] & RTE_LPM_LOOKUP_SUCCESS) ? tbl[2] & 0x00FFFFFF : defv;
+	hop[3] = (tbl[3] & RTE_LPM_LOOKUP_SUCCESS) ? tbl[3] & 0x00FFFFFF : defv;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_LPM_ALTIVEC_H_ */
-- 
1.9.1

Re: [dpdk-dev] [PATCH v6 1/9] lpm: add altivec intrinsics for dpdk lpm on ppc_64

[Bruce Richardson]

On Tue, Aug 16, 2016 at 03:57:51PM +0530, Gowrishankar Muthukrishnan wrote:
> This patch adds ppc64le port for LPM library in DPDK.
> 
> Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
> ---
>  app/test/test_xmmt_ops.h                           |  16 +++
>  config/defconfig_ppc_64-power8-linuxapp-gcc        |   1 -
>  .../common/include/arch/ppc_64/rte_vect.h          |  60 ++++++++
>  lib/librte_lpm/Makefile                            |   2 +
>  lib/librte_lpm/rte_lpm.h                           |   2 +
>  lib/librte_lpm/rte_lpm_altivec.h                   | 154 +++++++++++++++++++++
>  6 files changed, 234 insertions(+), 1 deletion(-)
>  create mode 100644 lib/librte_eal/common/include/arch/ppc_64/rte_vect.h
>  create mode 100644 lib/librte_lpm/rte_lpm_altivec.h
> 
Compilation and unit tests all still work fine on x86_64 systems, and patch looks
ok to me, so

Acked-by: Bruce Richardson <bruce.richardson@intel.com>

[dpdk-dev] [PATCH v6 2/9] acl: add altivec intrinsics for dpdk acl on ppc_64

[Gowrishankar Muthukrishnan]

This patch adds port for ACL library in ppc64le.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 app/test-acl/main.c                         |   4 +
 config/defconfig_ppc_64-power8-linuxapp-gcc |   1 -
 lib/librte_acl/Makefile                     |   2 +
 lib/librte_acl/acl.h                        |   4 +
 lib/librte_acl/acl_run.h                    |   2 +
 lib/librte_acl/acl_run_altivec.c            |  47 ++++
 lib/librte_acl/acl_run_altivec.h            | 329 ++++++++++++++++++++++++++++
 lib/librte_acl/rte_acl.c                    |  13 ++
 lib/librte_acl/rte_acl.h                    |   1 +
 9 files changed, 402 insertions(+), 1 deletion(-)
 create mode 100644 lib/librte_acl/acl_run_altivec.c
 create mode 100644 lib/librte_acl/acl_run_altivec.h

diff --git a/app/test-acl/main.c b/app/test-acl/main.c
index d366981..1b2b176 100644
--- a/app/test-acl/main.c
+++ b/app/test-acl/main.c
@@ -105,6 +105,10 @@ static const struct acl_alg acl_alg[] = {
 		.name = "neon",
 		.alg = RTE_ACL_CLASSIFY_NEON,
 	},
+	{
+		.name = "altivec",
+		.alg = RTE_ACL_CLASSIFY_ALTIVEC,
+	},
 };
 
 static struct {
diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index 9ddf3c5..dede34f 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -57,7 +57,6 @@ CONFIG_RTE_LIBRTE_ENIC_PMD=n
 CONFIG_RTE_LIBRTE_FM10K_PMD=n
 
 # This following libraries are not available on Power. So they're turned off.
-CONFIG_RTE_LIBRTE_ACL=n
 CONFIG_RTE_LIBRTE_SCHED=n
 CONFIG_RTE_LIBRTE_PORT=n
 CONFIG_RTE_LIBRTE_TABLE=n
diff --git a/lib/librte_acl/Makefile b/lib/librte_acl/Makefile
index 9803e9d..d05be66 100644
--- a/lib/librte_acl/Makefile
+++ b/lib/librte_acl/Makefile
@@ -52,6 +52,8 @@ SRCS-$(CONFIG_RTE_LIBRTE_ACL) += acl_run_scalar.c
 ifneq ($(filter y,$(CONFIG_RTE_ARCH_ARM) $(CONFIG_RTE_ARCH_ARM64)),)
 SRCS-$(CONFIG_RTE_LIBRTE_ACL) += acl_run_neon.c
 CFLAGS_acl_run_neon.o += -flax-vector-conversions -Wno-maybe-uninitialized
+else ifeq ($(CONFIG_RTE_ARCH_PPC_64),y)
+SRCS-$(CONFIG_RTE_LIBRTE_ACL) += acl_run_altivec.c
 else
 SRCS-$(CONFIG_RTE_LIBRTE_ACL) += acl_run_sse.c
 #check if flag for SSE4.1 is already on, if not set it up manually
diff --git a/lib/librte_acl/acl.h b/lib/librte_acl/acl.h
index 09d6784..6664a55 100644
--- a/lib/librte_acl/acl.h
+++ b/lib/librte_acl/acl.h
@@ -234,6 +234,10 @@ int
 rte_acl_classify_neon(const struct rte_acl_ctx *ctx, const uint8_t **data,
 	uint32_t *results, uint32_t num, uint32_t categories);
 
+int
+rte_acl_classify_altivec(const struct rte_acl_ctx *ctx, const uint8_t **data,
+	uint32_t *results, uint32_t num, uint32_t categories);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
diff --git a/lib/librte_acl/acl_run.h b/lib/librte_acl/acl_run.h
index b2fc42c..024f393 100644
--- a/lib/librte_acl/acl_run.h
+++ b/lib/librte_acl/acl_run.h
@@ -39,7 +39,9 @@
 
 #define MAX_SEARCHES_AVX16	16
 #define MAX_SEARCHES_SSE8	8
+#define MAX_SEARCHES_ALTIVEC8	8
 #define MAX_SEARCHES_SSE4	4
+#define MAX_SEARCHES_ALTIVEC4	4
 #define MAX_SEARCHES_SCALAR	2
 
 #define GET_NEXT_4BYTES(prm, idx)	\
diff --git a/lib/librte_acl/acl_run_altivec.c b/lib/librte_acl/acl_run_altivec.c
new file mode 100644
index 0000000..3523526
--- /dev/null
+++ b/lib/librte_acl/acl_run_altivec.c
@@ -0,0 +1,47 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (C) IBM Corporation 2016.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "acl_run_altivec.h"
+
+int
+rte_acl_classify_altivec(const struct rte_acl_ctx *ctx, const uint8_t **data,
+	uint32_t *results, uint32_t num, uint32_t categories)
+{
+	if (likely(num >= MAX_SEARCHES_ALTIVEC8))
+		return search_altivec_8(ctx, data, results, num, categories);
+	else if (num >= MAX_SEARCHES_ALTIVEC4)
+		return search_altivec_4(ctx, data, results, num, categories);
+	else
+		return rte_acl_classify_scalar(ctx, data, results, num,
+			categories);
+}
diff --git a/lib/librte_acl/acl_run_altivec.h b/lib/librte_acl/acl_run_altivec.h
new file mode 100644
index 0000000..7d329bc
--- /dev/null
+++ b/lib/librte_acl/acl_run_altivec.h
@@ -0,0 +1,329 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) IBM Corporation 2016.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of IBM Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "acl_run.h"
+#include "acl_vect.h"
+
+struct _altivec_acl_const {
+	rte_xmm_t xmm_shuffle_input;
+	rte_xmm_t xmm_index_mask;
+	rte_xmm_t xmm_ones_16;
+	rte_xmm_t range_base;
+} altivec_acl_const  __attribute__((aligned(RTE_CACHE_LINE_SIZE))) = {
+	{
+		.u32 = {0x00000000, 0x04040404, 0x08080808, 0x0c0c0c0c}
+	},
+	{
+		.u32 = {RTE_ACL_NODE_INDEX, RTE_ACL_NODE_INDEX,
+		RTE_ACL_NODE_INDEX, RTE_ACL_NODE_INDEX}
+	},
+	{
+		.u16 = {1, 1, 1, 1, 1, 1, 1, 1}
+	},
+	{
+		.u32 = {0xffffff00, 0xffffff04, 0xffffff08, 0xffffff0c}
+	},
+};
+
+/*
+ * Resolve priority for multiple results (altivec version).
+ * This consists comparing the priority of the current traversal with the
+ * running set of results for the packet.
+ * For each result, keep a running array of the result (rule number) and
+ * its priority for each category.
+ */
+static inline void
+resolve_priority_altivec(uint64_t transition, int n,
+	const struct rte_acl_ctx *ctx, struct parms *parms,
+	const struct rte_acl_match_results *p, uint32_t categories)
+{
+	uint32_t x;
+	xmm_t results, priority, results1, priority1;
+	vector bool int selector;
+	xmm_t *saved_results, *saved_priority;
+
+	for (x = 0; x < categories; x += RTE_ACL_RESULTS_MULTIPLIER) {
+
+		saved_results = (xmm_t *)(&parms[n].cmplt->results[x]);
+		saved_priority =
+			(xmm_t *)(&parms[n].cmplt->priority[x]);
+
+		/* get results and priorities for completed trie */
+		results = *(const xmm_t *)&p[transition].results[x];
+		priority = *(const xmm_t *)&p[transition].priority[x];
+
+		/* if this is not the first completed trie */
+		if (parms[n].cmplt->count != ctx->num_tries) {
+
+			/* get running best results and their priorities */
+			results1 = *saved_results;
+			priority1 = *saved_priority;
+
+			/* select results that are highest priority */
+			selector = vec_cmpgt(priority1, priority);
+			results = vec_sel(results, results1, selector);
+			priority = vec_sel(priority, priority1,
+				selector);
+		}
+
+		/* save running best results and their priorities */
+		*saved_results = results;
+		*saved_priority = priority;
+	}
+}
+
+/*
+ * Check for any match in 4 transitions
+ */
+static inline __attribute__((always_inline)) uint32_t
+check_any_match_x4(uint64_t val[])
+{
+	return (val[0] | val[1] | val[2] | val[3]) & RTE_ACL_NODE_MATCH;
+}
+
+static inline __attribute__((always_inline)) void
+acl_match_check_x4(int slot, const struct rte_acl_ctx *ctx, struct parms *parms,
+	struct acl_flow_data *flows, uint64_t transitions[])
+{
+	while (check_any_match_x4(transitions)) {
+		transitions[0] = acl_match_check(transitions[0], slot, ctx,
+			parms, flows, resolve_priority_altivec);
+		transitions[1] = acl_match_check(transitions[1], slot + 1, ctx,
+			parms, flows, resolve_priority_altivec);
+		transitions[2] = acl_match_check(transitions[2], slot + 2, ctx,
+			parms, flows, resolve_priority_altivec);
+		transitions[3] = acl_match_check(transitions[3], slot + 3, ctx,
+			parms, flows, resolve_priority_altivec);
+	}
+}
+
+/*
+ * Process 4 transitions (in 2 XMM registers) in parallel
+ */
+static inline __attribute__((optimize("O2"))) xmm_t
+transition4(xmm_t next_input, const uint64_t *trans,
+	xmm_t *indices1, xmm_t *indices2)
+{
+	xmm_t addr, tr_lo, tr_hi;
+	xmm_t in, node_type, r, t;
+	xmm_t dfa_ofs, quad_ofs;
+	xmm_t *index_mask, *tp;
+	vector bool int dfa_msk;
+	vector signed char zeroes = {};
+	union {
+		uint64_t d64[2];
+		uint32_t d32[4];
+	} v;
+
+	/* Move low 32 into tr_lo and high 32 into tr_hi */
+	tr_lo = (xmm_t){(*indices1)[0], (*indices1)[2],
+			(*indices2)[0], (*indices2)[2]};
+	tr_hi = (xmm_t){(*indices1)[1], (*indices1)[3],
+			(*indices2)[1], (*indices2)[3]};
+
+	 /* Calculate the address (array index) for all 4 transitions. */
+	index_mask = (xmm_t *)&altivec_acl_const.xmm_index_mask.u32;
+	t = vec_xor(*index_mask, *index_mask);
+	in = vec_perm(next_input, (xmm_t){},
+		*(vector unsigned char *)&altivec_acl_const.xmm_shuffle_input);
+
+	/* Calc node type and node addr */
+	node_type = vec_and(vec_nor(*index_mask, *index_mask), tr_lo);
+	addr = vec_and(tr_lo, *index_mask);
+
+	/* mask for DFA type(0) nodes */
+	dfa_msk = vec_cmpeq(node_type, t);
+
+	/* DFA calculations. */
+	r = vec_sr(in, (vector unsigned int){30, 30, 30, 30});
+	tp = (xmm_t *)&altivec_acl_const.range_base.u32;
+	r = vec_add(r, *tp);
+	t = vec_sr(in, (vector unsigned int){24, 24, 24, 24});
+	r = vec_perm(tr_hi, (xmm_t){(uint16_t)0 << 16},
+		(vector unsigned char)r);
+
+	dfa_ofs = vec_sub(t, r);
+
+	/* QUAD/SINGLE caluclations. */
+	t = (xmm_t)vec_cmpgt((vector signed char)in, (vector signed char)tr_hi);
+	t = (xmm_t)vec_sel(
+		vec_sel(
+			(vector signed char)vec_sub(
+				zeroes, (vector signed char)t),
+			(vector signed char)t,
+			vec_cmpgt((vector signed char)t, zeroes)),
+		zeroes,
+		vec_cmpeq((vector signed char)t, zeroes));
+
+	t = (xmm_t)vec_msum((vector signed char)t,
+		(vector unsigned char)t, (xmm_t){});
+	quad_ofs = (xmm_t)vec_msum((vector signed short)t,
+		*(vector signed short *)&altivec_acl_const.xmm_ones_16.u16,
+		(xmm_t){});
+
+	/* blend DFA and QUAD/SINGLE. */
+	t = vec_sel(quad_ofs, dfa_ofs, dfa_msk);
+
+	/* calculate address for next transitions. */
+	addr = vec_add(addr, t);
+
+	v.d64[0] = (uint64_t)trans[addr[0]];
+	v.d64[1] = (uint64_t)trans[addr[1]];
+	*indices1 = (xmm_t){v.d32[0], v.d32[1], v.d32[2], v.d32[3]};
+	v.d64[0] = (uint64_t)trans[addr[2]];
+	v.d64[1] = (uint64_t)trans[addr[3]];
+	*indices2 = (xmm_t){v.d32[0], v.d32[1], v.d32[2], v.d32[3]};
+
+	return vec_sr(next_input,
+		(vector unsigned int){CHAR_BIT, CHAR_BIT, CHAR_BIT, CHAR_BIT});
+}
+
+/*
+ * Execute trie traversal with 8 traversals in parallel
+ */
+static inline int
+search_altivec_8(const struct rte_acl_ctx *ctx, const uint8_t **data,
+	uint32_t *results, uint32_t total_packets, uint32_t categories)
+{
+	int n;
+	struct acl_flow_data flows;
+	uint64_t index_array[MAX_SEARCHES_ALTIVEC8];
+	struct completion cmplt[MAX_SEARCHES_ALTIVEC8];
+	struct parms parms[MAX_SEARCHES_ALTIVEC8];
+	xmm_t input0, input1;
+
+	acl_set_flow(&flows, cmplt, RTE_DIM(cmplt), data, results,
+		total_packets, categories, ctx->trans_table);
+
+	for (n = 0; n < MAX_SEARCHES_ALTIVEC8; n++) {
+		cmplt[n].count = 0;
+		index_array[n] = acl_start_next_trie(&flows, parms, n, ctx);
+	}
+
+	 /* Check for any matches. */
+	acl_match_check_x4(0, ctx, parms, &flows, (uint64_t *)&index_array[0]);
+	acl_match_check_x4(4, ctx, parms, &flows, (uint64_t *)&index_array[4]);
+
+	while (flows.started > 0) {
+
+		/* Gather 4 bytes of input data for each stream. */
+		input0 = (xmm_t){GET_NEXT_4BYTES(parms, 0),
+				GET_NEXT_4BYTES(parms, 1),
+				GET_NEXT_4BYTES(parms, 2),
+				GET_NEXT_4BYTES(parms, 3)};
+
+		input1 = (xmm_t){GET_NEXT_4BYTES(parms, 4),
+				GET_NEXT_4BYTES(parms, 5),
+				GET_NEXT_4BYTES(parms, 6),
+				GET_NEXT_4BYTES(parms, 7)};
+
+		 /* Process the 4 bytes of input on each stream. */
+
+		input0 = transition4(input0, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+		input1 = transition4(input1, flows.trans,
+			(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
+
+		input0 = transition4(input0, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+		input1 = transition4(input1, flows.trans,
+			(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
+
+		input0 = transition4(input0, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+		input1 = transition4(input1, flows.trans,
+			(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
+
+		input0 = transition4(input0, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+		input1 = transition4(input1, flows.trans,
+			(xmm_t *)&index_array[4], (xmm_t *)&index_array[6]);
+
+		 /* Check for any matches. */
+		acl_match_check_x4(0, ctx, parms, &flows,
+			(uint64_t *)&index_array[0]);
+		acl_match_check_x4(4, ctx, parms, &flows,
+			(uint64_t *)&index_array[4]);
+	}
+
+	return 0;
+}
+
+/*
+ * Execute trie traversal with 4 traversals in parallel
+ */
+static inline int
+search_altivec_4(const struct rte_acl_ctx *ctx, const uint8_t **data,
+	 uint32_t *results, int total_packets, uint32_t categories)
+{
+	int n;
+	struct acl_flow_data flows;
+	uint64_t index_array[MAX_SEARCHES_ALTIVEC4];
+	struct completion cmplt[MAX_SEARCHES_ALTIVEC4];
+	struct parms parms[MAX_SEARCHES_ALTIVEC4];
+	xmm_t input;
+
+	acl_set_flow(&flows, cmplt, RTE_DIM(cmplt), data, results,
+		total_packets, categories, ctx->trans_table);
+
+	for (n = 0; n < MAX_SEARCHES_ALTIVEC4; n++) {
+		cmplt[n].count = 0;
+		index_array[n] = acl_start_next_trie(&flows, parms, n, ctx);
+	}
+
+	/* Check for any matches. */
+	acl_match_check_x4(0, ctx, parms, &flows, index_array);
+
+	while (flows.started > 0) {
+
+		/* Gather 4 bytes of input data for each stream. */
+		input = (xmm_t){GET_NEXT_4BYTES(parms, 0),
+				GET_NEXT_4BYTES(parms, 1),
+				GET_NEXT_4BYTES(parms, 2),
+				GET_NEXT_4BYTES(parms, 3)};
+
+		/* Process the 4 bytes of input on each stream. */
+		input = transition4(input, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+		input = transition4(input, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+		input = transition4(input, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+		input = transition4(input, flows.trans,
+			(xmm_t *)&index_array[0], (xmm_t *)&index_array[2]);
+
+		/* Check for any matches. */
+		acl_match_check_x4(0, ctx, parms, &flows, index_array);
+	}
+
+	return 0;
+}
diff --git a/lib/librte_acl/rte_acl.c b/lib/librte_acl/rte_acl.c
index 4ba9786..8b7e92c 100644
--- a/lib/librte_acl/rte_acl.c
+++ b/lib/librte_acl/rte_acl.c
@@ -75,12 +75,23 @@ rte_acl_classify_neon(__rte_unused const struct rte_acl_ctx *ctx,
 	return -ENOTSUP;
 }
 
+int __attribute__ ((weak))
+rte_acl_classify_altivec(__rte_unused const struct rte_acl_ctx *ctx,
+	__rte_unused const uint8_t **data,
+	__rte_unused uint32_t *results,
+	__rte_unused uint32_t num,
+	__rte_unused uint32_t categories)
+{
+	return -ENOTSUP;
+}
+
 static const rte_acl_classify_t classify_fns[] = {
 	[RTE_ACL_CLASSIFY_DEFAULT] = rte_acl_classify_scalar,
 	[RTE_ACL_CLASSIFY_SCALAR] = rte_acl_classify_scalar,
 	[RTE_ACL_CLASSIFY_SSE] = rte_acl_classify_sse,
 	[RTE_ACL_CLASSIFY_AVX2] = rte_acl_classify_avx2,
 	[RTE_ACL_CLASSIFY_NEON] = rte_acl_classify_neon,
+	[RTE_ACL_CLASSIFY_ALTIVEC] = rte_acl_classify_altivec,
 };
 
 /* by default, use always available scalar code path. */
@@ -119,6 +130,8 @@ rte_acl_init(void)
 #elif defined(RTE_ARCH_ARM)
 	if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON))
 		alg =  RTE_ACL_CLASSIFY_NEON;
+#elif defined(RTE_ARCH_PPC_64)
+	alg = RTE_ACL_CLASSIFY_ALTIVEC;
 #else
 #ifdef CC_AVX2_SUPPORT
 	if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2))
diff --git a/lib/librte_acl/rte_acl.h b/lib/librte_acl/rte_acl.h
index 0979a09..8d4e2a6 100644
--- a/lib/librte_acl/rte_acl.h
+++ b/lib/librte_acl/rte_acl.h
@@ -271,6 +271,7 @@ enum rte_acl_classify_alg {
 	RTE_ACL_CLASSIFY_SSE = 2,     /**< requires SSE4.1 support. */
 	RTE_ACL_CLASSIFY_AVX2 = 3,    /**< requires AVX2 support. */
 	RTE_ACL_CLASSIFY_NEON = 4,    /**< requires NEON support. */
+	RTE_ACL_CLASSIFY_ALTIVEC = 5,    /**< requires ALTIVEC support. */
 	RTE_ACL_CLASSIFY_NUM          /* should always be the last one. */
 };
 
-- 
1.9.1

Re: [dpdk-dev] [PATCH v6 2/9] acl: add altivec intrinsics for dpdk acl on ppc_64

[Ananyev, Konstantin]

> 
> This patch adds port for ACL library in ppc64le.
> 
> Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
> ---
>  app/test-acl/main.c                         |   4 +
>  config/defconfig_ppc_64-power8-linuxapp-gcc |   1 -
>  lib/librte_acl/Makefile                     |   2 +
>  lib/librte_acl/acl.h                        |   4 +
>  lib/librte_acl/acl_run.h                    |   2 +
>  lib/librte_acl/acl_run_altivec.c            |  47 ++++
>  lib/librte_acl/acl_run_altivec.h            | 329 ++++++++++++++++++++++++++++
>  lib/librte_acl/rte_acl.c                    |  13 ++
>  lib/librte_acl/rte_acl.h                    |   1 +
>  9 files changed, 402 insertions(+), 1 deletion(-)  create mode 100644 lib/librte_acl/acl_run_altivec.c  create mode 100644
> lib/librte_acl/acl_run_altivec.h
> 

I am not a ppc expert, and I don't have ppc HW to try,
But from IA perspective - all looks good.
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

[dpdk-dev] [PATCH v6 3/9] l3fwd: add altivec support for em_hash_key

[Gowrishankar Muthukrishnan]

This patch adds ppc64le port for em_mask_key function.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 examples/l3fwd/l3fwd_em.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/examples/l3fwd/l3fwd_em.c b/examples/l3fwd/l3fwd_em.c
index def5a02..6053a62 100644
--- a/examples/l3fwd/l3fwd_em.c
+++ b/examples/l3fwd/l3fwd_em.c
@@ -259,8 +259,16 @@ em_mask_key(void *key, xmm_t mask)
 
 	return vandq_s32(data, mask);
 }
+#elif defined(RTE_MACHINE_CPUFLAG_ALTIVEC)
+static inline xmm_t
+em_mask_key(void *key, xmm_t mask)
+{
+	xmm_t data = vec_ld(0, (xmm_t *)(key));
+
+	return vec_and(data, mask);
+}
 #else
-#error No vector engine (SSE, NEON) available, check your toolchain
+#error No vector engine (SSE, NEON, ALTIVEC) available, check your toolchain
 #endif
 
 static inline uint8_t
-- 
1.9.1

[dpdk-dev] [PATCH v6 4/9] table: enable table library for ppc64le

[Gowrishankar Muthukrishnan]

This patch enables librte_table in ppc64le.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index dede34f..41f67d5 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -59,5 +59,4 @@ CONFIG_RTE_LIBRTE_FM10K_PMD=n
 # This following libraries are not available on Power. So they're turned off.
 CONFIG_RTE_LIBRTE_SCHED=n
 CONFIG_RTE_LIBRTE_PORT=n
-CONFIG_RTE_LIBRTE_TABLE=n
 CONFIG_RTE_LIBRTE_PIPELINE=n
-- 
1.9.1

[dpdk-dev] [PATCH v6 5/9] sched: enable sched library for ppc64le

[Gowrishankar Muthukrishnan]

This patch enables librte_sched in ppc64le.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index 41f67d5..0c7060f 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -57,6 +57,5 @@ CONFIG_RTE_LIBRTE_ENIC_PMD=n
 CONFIG_RTE_LIBRTE_FM10K_PMD=n
 
 # This following libraries are not available on Power. So they're turned off.
-CONFIG_RTE_LIBRTE_SCHED=n
 CONFIG_RTE_LIBRTE_PORT=n
 CONFIG_RTE_LIBRTE_PIPELINE=n
-- 
1.9.1

[dpdk-dev] [PATCH v6 6/9] port: enable port library for ppc64le

[Gowrishankar Muthukrishnan]

This patch enables librte_port in ppc64le.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index 0c7060f..1fc8df2 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -57,5 +57,4 @@ CONFIG_RTE_LIBRTE_ENIC_PMD=n
 CONFIG_RTE_LIBRTE_FM10K_PMD=n
 
 # This following libraries are not available on Power. So they're turned off.
-CONFIG_RTE_LIBRTE_PORT=n
 CONFIG_RTE_LIBRTE_PIPELINE=n
-- 
1.9.1

[dpdk-dev] [PATCH v6 7/9] pipeline: enable pipeline library for ppc64le

[Gowrishankar Muthukrishnan]

This patch enables librte_pipeline for ppc64le.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc | 2 --
 1 file changed, 2 deletions(-)

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index 1fc8df2..f953e61 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -56,5 +56,3 @@ CONFIG_RTE_LIBRTE_PMD_BOND=n
 CONFIG_RTE_LIBRTE_ENIC_PMD=n
 CONFIG_RTE_LIBRTE_FM10K_PMD=n
 
-# This following libraries are not available on Power. So they're turned off.
-CONFIG_RTE_LIBRTE_PIPELINE=n
-- 
1.9.1

[dpdk-dev] [PATCH v6 8/9] ip_pipeline: fix lcore mapping for varying SMT threads as in ppc64

[Gowrishankar Muthukrishnan]

This patch fixes ip_pipeline panic in app_init_core_map while preparing cpu
core map in powerpc with SMT off. cpu_core_map_compute_linux currently prepares
core mapping based on file existence in sysfs ie.

/sys/devices/system/cpu/cpu<LCORE_NUM>/topology/physical_package_id
  /sys/devices/system/cpu/cpu<LCORE_NUM>/topology/core_id

These files do not exist for lcores which are offline for any reason (as in
powerpc, while SMT is off). In this situation, this function should further
continue preparing map for other online lcores instead of returning with -1
for a first unavailable lcore.

Also, in SMT=off scenario for powerpc, lcore ids can not be always indexed from
0 upto 'number of cores present' (/sys/devices/system/cpu/present). For eg, for
an online lcore 32, core_id returned in sysfs is 112 where online lcores are
10 (as in one configuration), hence sysfs lcore id can not be checked with
indexing lcore number before positioning lcore map array.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 examples/ip_pipeline/cpu_core_map.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/examples/ip_pipeline/cpu_core_map.c b/examples/ip_pipeline/cpu_core_map.c
index cb088b1..dd8f678 100644
--- a/examples/ip_pipeline/cpu_core_map.c
+++ b/examples/ip_pipeline/cpu_core_map.c
@@ -351,8 +351,10 @@ cpu_core_map_compute_linux(struct cpu_core_map *map)
 			int lcore_socket_id =
 				cpu_core_map_get_socket_id_linux(lcore_id);
 
+#if !defined(RTE_ARCH_PPC_64)
 			if (lcore_socket_id < 0)
 				return -1;
+#endif
 
 			if (((uint32_t) lcore_socket_id) == socket_id)
 				n_detected++;
@@ -368,6 +370,7 @@ cpu_core_map_compute_linux(struct cpu_core_map *map)
 					cpu_core_map_get_socket_id_linux(
 					lcore_id);
 
+#if !defined(RTE_ARCH_PPC_64)
 				if (lcore_socket_id < 0)
 					return -1;
 
@@ -377,9 +380,14 @@ cpu_core_map_compute_linux(struct cpu_core_map *map)
 
 				if (lcore_core_id < 0)
 					return -1;
+#endif
 
+#if !defined(RTE_ARCH_PPC_64)
 				if (((uint32_t) lcore_socket_id == socket_id) &&
 					((uint32_t) lcore_core_id == core_id)) {
+#else
+				if (((uint32_t) lcore_socket_id == socket_id)) {
+#endif
 					uint32_t pos = cpu_core_map_pos(map,
 						socket_id,
 						core_id_contig,
-- 
1.9.1

Re: [dpdk-dev] [PATCH v6 8/9] ip_pipeline: fix lcore mapping for varying SMT threads as in ppc64

[Dumitrescu, Cristian]

> -----Original Message-----
> From: Gowrishankar Muthukrishnan
> [mailto:gowrishankar.m@linux.vnet.ibm.com]
> Sent: Tuesday, August 16, 2016 11:28 AM
> To: dev@dpdk.org
> Cc: Chao Zhu <chaozhu@linux.vnet.ibm.com>; Richardson, Bruce
> <bruce.richardson@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; Thomas Monjalon
> <thomas.monjalon@6wind.com>; Dumitrescu, Cristian
> <cristian.dumitrescu@intel.com>; Pradeep <pradeep@us.ibm.com>
> Subject: [PATCH v6 8/9] ip_pipeline: fix lcore mapping for varying SMT
> threads as in ppc64
> 
> This patch fixes ip_pipeline panic in app_init_core_map while preparing cpu
> core map in powerpc with SMT off. cpu_core_map_compute_linux currently
> prepares
> core mapping based on file existence in sysfs ie.
> 
> /sys/devices/system/cpu/cpu<LCORE_NUM>/topology/physical_package_id
>   /sys/devices/system/cpu/cpu<LCORE_NUM>/topology/core_id
> 
> These files do not exist for lcores which are offline for any reason (as in
> powerpc, while SMT is off). In this situation, this function should further
> continue preparing map for other online lcores instead of returning with -1
> for a first unavailable lcore.
> 
> Also, in SMT=off scenario for powerpc, lcore ids can not be always indexed
> from
> 0 upto 'number of cores present' (/sys/devices/system/cpu/present). For
> eg, for
> an online lcore 32, core_id returned in sysfs is 112 where online lcores are
> 10 (as in one configuration), hence sysfs lcore id can not be checked with
> indexing lcore number before positioning lcore map array.
> 
> Signed-off-by: Gowrishankar Muthukrishnan
> <gowrishankar.m@linux.vnet.ibm.com>
> ---
>  examples/ip_pipeline/cpu_core_map.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/examples/ip_pipeline/cpu_core_map.c
> b/examples/ip_pipeline/cpu_core_map.c
> index cb088b1..dd8f678 100644
> --- a/examples/ip_pipeline/cpu_core_map.c
> +++ b/examples/ip_pipeline/cpu_core_map.c
> @@ -351,8 +351,10 @@ cpu_core_map_compute_linux(struct
> cpu_core_map *map)
>  			int lcore_socket_id =
> 
> 	cpu_core_map_get_socket_id_linux(lcore_id);
> 
> +#if !defined(RTE_ARCH_PPC_64)
>  			if (lcore_socket_id < 0)
>  				return -1;
> +#endif
> 
>  			if (((uint32_t) lcore_socket_id) == socket_id)
>  				n_detected++;
> @@ -368,6 +370,7 @@ cpu_core_map_compute_linux(struct cpu_core_map
> *map)
>  					cpu_core_map_get_socket_id_linux(
>  					lcore_id);
> 
> +#if !defined(RTE_ARCH_PPC_64)
>  				if (lcore_socket_id < 0)
>  					return -1;
> 
> @@ -377,9 +380,14 @@ cpu_core_map_compute_linux(struct
> cpu_core_map *map)
> 
>  				if (lcore_core_id < 0)
>  					return -1;
> +#endif
> 
> +#if !defined(RTE_ARCH_PPC_64)
>  				if (((uint32_t) lcore_socket_id == socket_id)
> &&
>  					((uint32_t) lcore_core_id ==
> core_id)) {
> +#else
> +				if (((uint32_t) lcore_socket_id == socket_id))
> {
> +#endif
>  					uint32_t pos =
> cpu_core_map_pos(map,
>  						socket_id,
>  						core_id_contig,
> --
> 1.9.1

This patch only changes the code for PPC CPUs, I don't have the hardware to check it myself, but I will take Gowrishankar's and Chao's word it is the right thing to do for PPC CPUs, so ...

Acked by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>

[dpdk-dev] [PATCH v6 9/9] table: align rte table hash structs for cache line size

[Gowrishankar Muthukrishnan]

rte table hash structs rte_bucket_4_8, rte_bucket_4_16 and rte_bucket_4_32 have
to be cache aligned as required by their corresponding hash create functions
rte_table_hash_create_key8_lru etc.

Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
 lib/librte_table/rte_table_hash_key16.c | 4 ++--
 lib/librte_table/rte_table_hash_key32.c | 4 ++--
 lib/librte_table/rte_table_hash_key8.c  | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/librte_table/rte_table_hash_key16.c b/lib/librte_table/rte_table_hash_key16.c
index b7e000f..2102326 100644
--- a/lib/librte_table/rte_table_hash_key16.c
+++ b/lib/librte_table/rte_table_hash_key16.c
@@ -68,10 +68,10 @@ struct rte_bucket_4_16 {
 	uint64_t next_valid;
 
 	/* Cache line 1 */
-	uint64_t key[4][2];
+	uint64_t key[4][2] __rte_cache_aligned;
 
 	/* Cache line 2 */
-	uint8_t data[0];
+	uint8_t data[0] __rte_cache_aligned;
 };
 
 struct rte_table_hash {
diff --git a/lib/librte_table/rte_table_hash_key32.c b/lib/librte_table/rte_table_hash_key32.c
index a7aba49..619f63a 100644
--- a/lib/librte_table/rte_table_hash_key32.c
+++ b/lib/librte_table/rte_table_hash_key32.c
@@ -68,10 +68,10 @@ struct rte_bucket_4_32 {
 	uint64_t next_valid;
 
 	/* Cache lines 1 and 2 */
-	uint64_t key[4][4];
+	uint64_t key[4][4] __rte_cache_aligned;
 
 	/* Cache line 3 */
-	uint8_t data[0];
+	uint8_t data[0] __rte_cache_aligned;
 };
 
 struct rte_table_hash {
diff --git a/lib/librte_table/rte_table_hash_key8.c b/lib/librte_table/rte_table_hash_key8.c
index e2e2bdc..4d5e0cd 100644
--- a/lib/librte_table/rte_table_hash_key8.c
+++ b/lib/librte_table/rte_table_hash_key8.c
@@ -68,7 +68,7 @@ struct rte_bucket_4_8 {
 	uint64_t key[4];
 
 	/* Cache line 1 */
-	uint8_t data[0];
+	uint8_t data[0] __rte_cache_aligned;
 };
 
 struct rte_table_hash {
-- 
1.9.1

Re: [dpdk-dev] [PATCH v6 9/9] table: align rte table hash structs for cache line size

[Dumitrescu, Cristian]

> -----Original Message-----
> From: Gowrishankar Muthukrishnan
> [mailto:gowrishankar.m@linux.vnet.ibm.com]
> Sent: Tuesday, August 16, 2016 11:28 AM
> To: dev@dpdk.org
> Cc: Chao Zhu <chaozhu@linux.vnet.ibm.com>; Richardson, Bruce
> <bruce.richardson@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; Thomas Monjalon
> <thomas.monjalon@6wind.com>; Dumitrescu, Cristian
> <cristian.dumitrescu@intel.com>; Pradeep <pradeep@us.ibm.com>
> Subject: [PATCH v6 9/9] table: align rte table hash structs for cache line size
> 
> rte table hash structs rte_bucket_4_8, rte_bucket_4_16 and
> rte_bucket_4_32 have
> to be cache aligned as required by their corresponding hash create functions
> rte_table_hash_create_key8_lru etc.
> 
> Signed-off-by: Gowrishankar Muthukrishnan
> <gowrishankar.m@linux.vnet.ibm.com>
> ---
>  lib/librte_table/rte_table_hash_key16.c | 4 ++--
>  lib/librte_table/rte_table_hash_key32.c | 4 ++--
>  lib/librte_table/rte_table_hash_key8.c  | 2 +-
>  3 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/lib/librte_table/rte_table_hash_key16.c
> b/lib/librte_table/rte_table_hash_key16.c
> index b7e000f..2102326 100644
> --- a/lib/librte_table/rte_table_hash_key16.c
> +++ b/lib/librte_table/rte_table_hash_key16.c
> @@ -68,10 +68,10 @@ struct rte_bucket_4_16 {
>  	uint64_t next_valid;
> 
>  	/* Cache line 1 */
> -	uint64_t key[4][2];
> +	uint64_t key[4][2] __rte_cache_aligned;
> 
>  	/* Cache line 2 */
> -	uint8_t data[0];
> +	uint8_t data[0] __rte_cache_aligned;
>  };
> 
>  struct rte_table_hash {
> diff --git a/lib/librte_table/rte_table_hash_key32.c
> b/lib/librte_table/rte_table_hash_key32.c
> index a7aba49..619f63a 100644
> --- a/lib/librte_table/rte_table_hash_key32.c
> +++ b/lib/librte_table/rte_table_hash_key32.c
> @@ -68,10 +68,10 @@ struct rte_bucket_4_32 {
>  	uint64_t next_valid;
> 
>  	/* Cache lines 1 and 2 */
> -	uint64_t key[4][4];
> +	uint64_t key[4][4] __rte_cache_aligned;
> 
>  	/* Cache line 3 */
> -	uint8_t data[0];
> +	uint8_t data[0] __rte_cache_aligned;
>  };
> 
>  struct rte_table_hash {
> diff --git a/lib/librte_table/rte_table_hash_key8.c
> b/lib/librte_table/rte_table_hash_key8.c
> index e2e2bdc..4d5e0cd 100644
> --- a/lib/librte_table/rte_table_hash_key8.c
> +++ b/lib/librte_table/rte_table_hash_key8.c
> @@ -68,7 +68,7 @@ struct rte_bucket_4_8 {
>  	uint64_t key[4];
> 
>  	/* Cache line 1 */
> -	uint8_t data[0];
> +	uint8_t data[0] __rte_cache_aligned;
>  };
> 
>  struct rte_table_hash {
> --
> 1.9.1

Hi Gowrishankar,

My understanding is you are trying to work around the check invoked by the hash table create functions that verifies the size of the bucket header structure is a multiple of the cache line, right?

Given that the size of this structure is 1x, 2x or 3x times 64 bytes, the check passes on IA CPUs (cache line of 64 bytes; explicit alignment to cache line size is not needed in order to make the size of the structure a multiple of cache line), but not on PPC CPUs (cache line of 128 bytes), correct?

I don't think your proposal provides the best way to fix this issue, since your code leads to a considerable increase in the memory consumption used per bucket in most cases:
	- 100% more memory for 8-byte key hash table
	- 0% more for 16-byte key hash table (code does not fix anything, explicit alignment is not needed)
	- 50% more for 32-byte key hash table

I suggest you simply change the check: instead of validating this data structure is a multiple of cache line size, validate it is a multiple of 64 bytes.

Regards,
Cristian

Re: [dpdk-dev] [PATCH v6 9/9] table: align rte table hash structs for cache line size

[Thomas Monjalon]

2016-08-31 17:29, Dumitrescu, Cristian:
> From: Gowrishankar Muthukrishnan
> > rte table hash structs rte_bucket_4_8, rte_bucket_4_16 and
> > rte_bucket_4_32 have
> > to be cache aligned as required by their corresponding hash create functions
> > rte_table_hash_create_key8_lru etc.
> 
> Hi Gowrishankar,
> 
> My understanding is you are trying to work around the check invoked by the hash table create functions that verifies the size of the bucket header structure is a multiple of the cache line, right?
> 
> Given that the size of this structure is 1x, 2x or 3x times 64 bytes, the check passes on IA CPUs (cache line of 64 bytes; explicit alignment to cache line size is not needed in order to make the size of the structure a multiple of cache line), but not on PPC CPUs (cache line of 128 bytes), correct?
> 
> I don't think your proposal provides the best way to fix this issue, since your code leads to a considerable increase in the memory consumption used per bucket in most cases:
> 	- 100% more memory for 8-byte key hash table
> 	- 0% more for 16-byte key hash table (code does not fix anything, explicit alignment is not needed)
> 	- 50% more for 32-byte key hash table
> 
> I suggest you simply change the check: instead of validating this data structure is a multiple of cache line size, validate it is a multiple of 64 bytes.

Any news please?
The whole series is blocked for this patch.
Should we expect a v7?

Re: [dpdk-dev] [PATCH v6 9/9] table: align rte table hash structs for cache line size

[Dumitrescu, Cristian]

> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Thursday, September 8, 2016 10:36 AM
> To: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
> Cc: dev@dpdk.org; Dumitrescu, Cristian <cristian.dumitrescu@intel.com>;
> Chao Zhu <chaozhu@linux.vnet.ibm.com>; Richardson, Bruce
> <bruce.richardson@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; Pradeep <pradeep@us.ibm.com>
> Subject: Re: [dpdk-dev] [PATCH v6 9/9] table: align rte table hash structs for
> cache line size
> 
> 2016-08-31 17:29, Dumitrescu, Cristian:
> > From: Gowrishankar Muthukrishnan
> > > rte table hash structs rte_bucket_4_8, rte_bucket_4_16 and
> > > rte_bucket_4_32 have
> > > to be cache aligned as required by their corresponding hash create
> functions
> > > rte_table_hash_create_key8_lru etc.
> >
> > Hi Gowrishankar,
> >
> > My understanding is you are trying to work around the check invoked by
> the hash table create functions that verifies the size of the bucket header
> structure is a multiple of the cache line, right?
> >
> > Given that the size of this structure is 1x, 2x or 3x times 64 bytes, the check
> passes on IA CPUs (cache line of 64 bytes; explicit alignment to cache line size
> is not needed in order to make the size of the structure a multiple of cache
> line), but not on PPC CPUs (cache line of 128 bytes), correct?
> >
> > I don't think your proposal provides the best way to fix this issue, since
> your code leads to a considerable increase in the memory consumption used
> per bucket in most cases:
> > 	- 100% more memory for 8-byte key hash table
> > 	- 0% more for 16-byte key hash table (code does not fix anything,
> explicit alignment is not needed)
> > 	- 50% more for 32-byte key hash table
> >
> > I suggest you simply change the check: instead of validating this data
> structure is a multiple of cache line size, validate it is a multiple of 64 bytes.
> 
> Any news please?
> The whole series is blocked for this patch.
> Should we expect a v7?

Yes, I think we should. Small fix for a considerable benefit.

Re: [dpdk-dev] [PATCH v6 9/9] table: align rte table hash structs for cache line size

[gowrishankar muthukrishnan]

Thanks Cristian and Thomas for your feedback. I have taken your suggestions
and sent out v7. Please check if the new patch is fine.

Thanks,
Gowrishankar

On Thursday 08 September 2016 03:10 PM, Dumitrescu, Cristian wrote:
>
>> -----Original Message-----
>> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
>> Sent: Thursday, September 8, 2016 10:36 AM
>> To: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
>> Cc: dev@dpdk.org; Dumitrescu, Cristian <cristian.dumitrescu@intel.com>;
>> Chao Zhu <chaozhu@linux.vnet.ibm.com>; Richardson, Bruce
>> <bruce.richardson@intel.com>; Ananyev, Konstantin
>> <konstantin.ananyev@intel.com>; Pradeep <pradeep@us.ibm.com>
>> Subject: Re: [dpdk-dev] [PATCH v6 9/9] table: align rte table hash structs for
>> cache line size
>>
>> 2016-08-31 17:29, Dumitrescu, Cristian:
>>> From: Gowrishankar Muthukrishnan
>>>> rte table hash structs rte_bucket_4_8, rte_bucket_4_16 and
>>>> rte_bucket_4_32 have
>>>> to be cache aligned as required by their corresponding hash create
>> functions
>>>> rte_table_hash_create_key8_lru etc.
>>> Hi Gowrishankar,
>>>
>>> My understanding is you are trying to work around the check invoked by
>> the hash table create functions that verifies the size of the bucket header
>> structure is a multiple of the cache line, right?
>>> Given that the size of this structure is 1x, 2x or 3x times 64 bytes, the check
>> passes on IA CPUs (cache line of 64 bytes; explicit alignment to cache line size
>> is not needed in order to make the size of the structure a multiple of cache
>> line), but not on PPC CPUs (cache line of 128 bytes), correct?
>>> I don't think your proposal provides the best way to fix this issue, since
>> your code leads to a considerable increase in the memory consumption used
>> per bucket in most cases:
>>> 	- 100% more memory for 8-byte key hash table
>>> 	- 0% more for 16-byte key hash table (code does not fix anything,
>> explicit alignment is not needed)
>>> 	- 50% more for 32-byte key hash table
>>>
>>> I suggest you simply change the check: instead of validating this data
>> structure is a multiple of cache line size, validate it is a multiple of 64 bytes.
>>
>> Any news please?
>> The whole series is blocked for this patch.
>> Should we expect a v7?
> Yes, I think we should. Small fix for a considerable benefit.
>
>

Re: [dpdk-dev] [PATCH v6 0/9] enable lpm, acl and other missing libraries in ppc64le

[Chao Zhu]

-----Original Message-----
From: Gowrishankar Muthukrishnan [mailto:gowrishankar.m@linux.vnet.ibm.com] 
Sent: 2016年8月16日 18:28
To: dev@dpdk.org
Cc: Chao Zhu <chaozhu@linux.vnet.ibm.com>; Bruce Richardson
<bruce.richardson@intel.com>; Konstantin Ananyev
<konstantin.ananyev@intel.com>; Thomas Monjalon <thomas.monjalon@6wind.com>;
Cristian Dumitrescu <cristian.dumitrescu@intel.com>; Pradeep
<pradeep@us.ibm.com>
Subject: [PATCH v6 0/9] enable lpm, acl and other missing libraries in
ppc64le

This patchset enables LPM, ACL and other few missing libs in ppc64le and
also address few patches in related examples (ip_pipeline and l3fwd).

Test report:
1. LPM and ACL unit tests passed.
   Steps:
   compile test app and run (with any needed params)
   lpm_autotest
   acl_autotest
   table_autotest
     test_table_lpm_combined fails same as in intel in current master.

2. Example ip_pipeline application verified for port forwarding.
   compile examples/ip_pipeline (adjust app_init_core_map
     param for ht to 1 in case of ppc64le in SMT=off mode).
   modify config/l3fwd.cfg as per enabled PMD ports.
   run ip_pipeline with config file option and check packets fwd.

v6 changes:
- added cache alignment fix for rte hash table structs.

v5 changes:
- no change in lpm lib enablement
- no change in acl lib enablement
- config file changes individually for sched,table,port,pipeline
  lib enablement
- ip_pipeline patch description and changes flagged only for ppc64le.
   app_init_core_map changes removed (due to bug found and under 
   investigation only on ppc64le/smt=off case).

v4 changes:
- fix transition4 in acl_run_altivec.h for gcc strict-aliasing error.
  Thanks to Chao Zhu for bringing up.

v3 changes:
- rebase over master to fix conflict in examples/l3fwd/l3fwd_em.c

v2 changes:
- enabling libs in config included as part of lib changes itself.

Gowrishankar Muthukrishnan (9):
  lpm: add altivec intrinsics for dpdk lpm on ppc_64
  acl: add altivec intrinsics for dpdk acl on ppc_64
  l3fwd: add altivec support for em_hash_key
  table: enable table library for ppc64le
  sched: enable sched library for ppc64le
  port: enable port library for ppc64le
  pipeline: enable pipeline library for ppc64le
  ip_pipeline: fix lcore mapping for varying SMT threads as in ppc64
  table: align rte table hash structs for cache line size

 app/test-acl/main.c                                |   4 +
 app/test/test_xmmt_ops.h                           |  16 +
 config/defconfig_ppc_64-power8-linuxapp-gcc        |   7 -
 examples/ip_pipeline/cpu_core_map.c                |   8 +
 examples/l3fwd/l3fwd_em.c                          |  10 +-
 lib/librte_acl/Makefile                            |   2 +
 lib/librte_acl/acl.h                               |   4 +
 lib/librte_acl/acl_run.h                           |   2 +
 lib/librte_acl/acl_run_altivec.c                   |  47 +++
 lib/librte_acl/acl_run_altivec.h                   | 329
+++++++++++++++++++++
 lib/librte_acl/rte_acl.c                           |  13 +
 lib/librte_acl/rte_acl.h                           |   1 +
 .../common/include/arch/ppc_64/rte_vect.h          |  60 ++++
 lib/librte_lpm/Makefile                            |   2 +
 lib/librte_lpm/rte_lpm.h                           |   2 +
 lib/librte_lpm/rte_lpm_altivec.h                   | 154 ++++++++++
 lib/librte_table/rte_table_hash_key16.c            |   4 +-
 lib/librte_table/rte_table_hash_key32.c            |   4 +-
 lib/librte_table/rte_table_hash_key8.c             |   2 +-
 19 files changed, 658 insertions(+), 13 deletions(-)  create mode 100644
lib/librte_acl/acl_run_altivec.c  create mode 100644
lib/librte_acl/acl_run_altivec.h  create mode 100644
lib/librte_eal/common/include/arch/ppc_64/rte_vect.h
 create mode 100644 lib/librte_lpm/rte_lpm_altivec.h

--
1.9.1

I think this patch set is good enough.

Acked-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>

[dpdk-dev] FW: [PATCH v6 0/9] enable lpm, acl and other missing libraries in ppc64le

[Chao Zhu]

Thomas,

Any comments of this patch set? Are we waiting for more acks?

Thank you!

-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Chao Zhu
Sent: 2016年8月17日 16:49
To: 'Gowrishankar Muthukrishnan' <gowrishankar.m@linux.vnet.ibm.com>;
dev@dpdk.org
Cc: 'Bruce Richardson' <bruce.richardson@intel.com>; 'Konstantin Ananyev'
<konstantin.ananyev@intel.com>; 'Thomas Monjalon'
<thomas.monjalon@6wind.com>; 'Cristian Dumitrescu'
<cristian.dumitrescu@intel.com>; 'Pradeep' <pradeep@us.ibm.com>
Subject: Re: [dpdk-dev] [PATCH v6 0/9] enable lpm, acl and other missing
libraries in ppc64le

-----Original Message-----
From: Gowrishankar Muthukrishnan [mailto:gowrishankar.m@linux.vnet.ibm.com]
Sent: 2016年8月16日 18:28
To: dev@dpdk.org
Cc: Chao Zhu <chaozhu@linux.vnet.ibm.com>; Bruce Richardson
<bruce.richardson@intel.com>; Konstantin Ananyev
<konstantin.ananyev@intel.com>; Thomas Monjalon <thomas.monjalon@6wind.com>;
Cristian Dumitrescu <cristian.dumitrescu@intel.com>; Pradeep
<pradeep@us.ibm.com>
Subject: [PATCH v6 0/9] enable lpm, acl and other missing libraries in
ppc64le

This patchset enables LPM, ACL and other few missing libs in ppc64le and
also address few patches in related examples (ip_pipeline and l3fwd).

Test report:
1. LPM and ACL unit tests passed.
   Steps:
   compile test app and run (with any needed params)
   lpm_autotest
   acl_autotest
   table_autotest
     test_table_lpm_combined fails same as in intel in current master.

2. Example ip_pipeline application verified for port forwarding.
   compile examples/ip_pipeline (adjust app_init_core_map
     param for ht to 1 in case of ppc64le in SMT=off mode).
   modify config/l3fwd.cfg as per enabled PMD ports.
   run ip_pipeline with config file option and check packets fwd.

v6 changes:
- added cache alignment fix for rte hash table structs.

v5 changes:
- no change in lpm lib enablement
- no change in acl lib enablement
- config file changes individually for sched,table,port,pipeline
  lib enablement
- ip_pipeline patch description and changes flagged only for ppc64le.
   app_init_core_map changes removed (due to bug found and under 
   investigation only on ppc64le/smt=off case).

v4 changes:
- fix transition4 in acl_run_altivec.h for gcc strict-aliasing error.
  Thanks to Chao Zhu for bringing up.

v3 changes:
- rebase over master to fix conflict in examples/l3fwd/l3fwd_em.c

v2 changes:
- enabling libs in config included as part of lib changes itself.

Gowrishankar Muthukrishnan (9):
  lpm: add altivec intrinsics for dpdk lpm on ppc_64
  acl: add altivec intrinsics for dpdk acl on ppc_64
  l3fwd: add altivec support for em_hash_key
  table: enable table library for ppc64le
  sched: enable sched library for ppc64le
  port: enable port library for ppc64le
  pipeline: enable pipeline library for ppc64le
  ip_pipeline: fix lcore mapping for varying SMT threads as in ppc64
  table: align rte table hash structs for cache line size

 app/test-acl/main.c                                |   4 +
 app/test/test_xmmt_ops.h                           |  16 +
 config/defconfig_ppc_64-power8-linuxapp-gcc        |   7 -
 examples/ip_pipeline/cpu_core_map.c                |   8 +
 examples/l3fwd/l3fwd_em.c                          |  10 +-
 lib/librte_acl/Makefile                            |   2 +
 lib/librte_acl/acl.h                               |   4 +
 lib/librte_acl/acl_run.h                           |   2 +
 lib/librte_acl/acl_run_altivec.c                   |  47 +++
 lib/librte_acl/acl_run_altivec.h                   | 329
+++++++++++++++++++++
 lib/librte_acl/rte_acl.c                           |  13 +
 lib/librte_acl/rte_acl.h                           |   1 +
 .../common/include/arch/ppc_64/rte_vect.h          |  60 ++++
 lib/librte_lpm/Makefile                            |   2 +
 lib/librte_lpm/rte_lpm.h                           |   2 +
 lib/librte_lpm/rte_lpm_altivec.h                   | 154 ++++++++++
 lib/librte_table/rte_table_hash_key16.c            |   4 +-
 lib/librte_table/rte_table_hash_key32.c            |   4 +-
 lib/librte_table/rte_table_hash_key8.c             |   2 +-
 19 files changed, 658 insertions(+), 13 deletions(-)  create mode 100644
lib/librte_acl/acl_run_altivec.c  create mode 100644
lib/librte_acl/acl_run_altivec.h  create mode 100644
lib/librte_eal/common/include/arch/ppc_64/rte_vect.h
 create mode 100644 lib/librte_lpm/rte_lpm_altivec.h

--
1.9.1

I think this patch set is good enough.

Acked-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>

Re: [dpdk-dev] FW: [PATCH v6 0/9] enable lpm, acl and other missing libraries in ppc64le

[Thomas Monjalon]

2016-08-26 18:55, Chao Zhu:
> Thomas,
> 
> Any comments of this patch set? Are we waiting for more acks?

Yes, especially for lpm and acl, a review from respective maintainers
may be needed.

Konstantin? Bruce?

If no review is done in 1 week, it will be applied as-is.

Gowrishankar, using --in-reply when sending would help to check the history
of the patchset. Please remind for next time.