enabled CONFIG_RTE_LIBRTE_LPM, CONFIG_RTE_LIBRTE_TABLE,
CONFIG_RTE_LIBRTE_PIPELINE libraries for arm64.
TABLE, PIPELINE libraries were disabled due to LPM library dependency.
Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
app/test/test_lpm.c | 10 +-
config/defconfig_arm64-armv8a-linuxapp-gcc | 3 -
lib/librte_lpm/Makefile | 3 +
lib/librte_lpm/rte_lpm.h | 5 +
lib/librte_lpm/rte_lpm_neon.h | 172 +++++++++++++++++++++++++++++
5 files changed, 185 insertions(+), 8 deletions(-)
create mode 100644 lib/librte_lpm/rte_lpm_neon.h
diff --git a/app/test/test_lpm.c b/app/test/test_lpm.c
index 8b4ded9..207301b 100644
--- a/app/test/test_lpm.c
+++ b/app/test/test_lpm.c
@@ -324,7 +324,7 @@ test7(void)
status = rte_lpm_lookup(lpm, ip, &next_hop_return);
TEST_LPM_ASSERT((status == 0) && (next_hop_return == next_hop_add));
- ipx4 = _mm_set_epi32(ip, ip + 0x100, ip - 0x100, ip);
+ ipx4 = rte_vect_set_epi32(ip, ip + 0x100, ip - 0x100, ip);
rte_lpm_lookupx4(lpm, ipx4, hop, UINT16_MAX);
TEST_LPM_ASSERT(hop[0] == next_hop_add);
TEST_LPM_ASSERT(hop[1] == UINT16_MAX);
@@ -380,7 +380,7 @@ test8(void)
TEST_LPM_ASSERT((status == 0) &&
(next_hop_return == next_hop_add));
- ipx4 = _mm_set_epi32(ip2, ip1, ip2, ip1);
+ ipx4 = rte_vect_set_epi32(ip2, ip1, ip2, ip1);
rte_lpm_lookupx4(lpm, ipx4, hop, UINT16_MAX);
TEST_LPM_ASSERT(hop[0] == UINT16_MAX);
TEST_LPM_ASSERT(hop[1] == next_hop_add);
@@ -408,7 +408,7 @@ test8(void)
status = rte_lpm_lookup(lpm, ip1, &next_hop_return);
TEST_LPM_ASSERT(status == -ENOENT);
- ipx4 = _mm_set_epi32(ip1, ip1, ip2, ip2);
+ ipx4 = rte_vect_set_epi32(ip1, ip1, ip2, ip2);
rte_lpm_lookupx4(lpm, ipx4, hop, UINT16_MAX);
if (depth != 1) {
TEST_LPM_ASSERT(hop[0] == next_hop_add);
@@ -872,7 +872,7 @@ test12(void)
TEST_LPM_ASSERT((status == 0) &&
(next_hop_return == next_hop_add));
- ipx4 = _mm_set_epi32(ip, ip + 1, ip, ip - 1);
+ ipx4 = rte_vect_set_epi32(ip, ip + 1, ip, ip - 1);
rte_lpm_lookupx4(lpm, ipx4, hop, UINT16_MAX);
TEST_LPM_ASSERT(hop[0] == UINT16_MAX);
TEST_LPM_ASSERT(hop[1] == next_hop_add);
@@ -1291,7 +1291,7 @@ perf_test(void)
unsigned k;
__m128i ipx4;
- ipx4 = _mm_loadu_si128((__m128i *)(ip_batch + j));
+ ipx4 = rte_vect_loadu_sil128((__m128i *)(ip_batch + j));
ipx4 = *(__m128i *)(ip_batch + j);
rte_lpm_lookupx4(lpm, ipx4, next_hops, UINT16_MAX);
for (k = 0; k < RTE_DIM(next_hops); k++)
diff --git a/config/defconfig_arm64-armv8a-linuxapp-gcc
b/config/defconfig_arm64-armv8a-linuxapp-gcc
index 504f3ed..57f7941 100644
--- a/config/defconfig_arm64-armv8a-linuxapp-gcc
+++ b/config/defconfig_arm64-armv8a-linuxapp-gcc
@@ -51,7 +51,4 @@ CONFIG_RTE_LIBRTE_IVSHMEM=n
CONFIG_RTE_LIBRTE_FM10K_PMD=n
CONFIG_RTE_LIBRTE_I40E_PMD=n
-CONFIG_RTE_LIBRTE_LPM=n
-CONFIG_RTE_LIBRTE_TABLE=n
-CONFIG_RTE_LIBRTE_PIPELINE=n
CONFIG_RTE_SCHED_VECTOR=n
diff --git a/lib/librte_lpm/Makefile b/lib/librte_lpm/Makefile
index 688cfc9..2fd5305 100644
--- a/lib/librte_lpm/Makefile
+++ b/lib/librte_lpm/Makefile
@@ -46,6 +46,9 @@ SRCS-$(CONFIG_RTE_LIBRTE_LPM) := rte_lpm.c rte_lpm6.c
# install this header file
SYMLINK-$(CONFIG_RTE_LIBRTE_LPM)-include := rte_lpm.h rte_lpm6.h
+ifeq ($(CONFIG_RTE_ARCH_ARM64),y)
+SYMLINK-$(CONFIG_RTE_LIBRTE_LPM)-include += rte_lpm_neon.h
+endif
# this lib needs eal
DEPDIRS-$(CONFIG_RTE_LIBRTE_LPM) += lib/librte_eal
diff --git a/lib/librte_lpm/rte_lpm.h b/lib/librte_lpm/rte_lpm.h
index c299ce2..12b75ce 100644
--- a/lib/librte_lpm/rte_lpm.h
+++ b/lib/librte_lpm/rte_lpm.h
@@ -361,6 +361,9 @@ rte_lpm_lookup_bulk_func(const struct rte_lpm *lpm, const
uint32_t * ips,
/* Mask four results. */
#define RTE_LPM_MASKX4_RES UINT64_C(0x00ff00ff00ff00ff)
+#if defined(RTE_ARCH_ARM64)
+#include "rte_lpm_neon.h"
+#else
/**
* Lookup four IP addresses in an LPM table.
*
@@ -473,6 +476,8 @@ rte_lpm_lookupx4(const struct rte_lpm *lpm, __m128i ip,
uint16_t hop[4],
hop[3] = (tbl[3] & RTE_LPM_LOOKUP_SUCCESS) ? (uint8_t)tbl[3] : defv;
}
+#endif
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/librte_lpm/rte_lpm_neon.h b/lib/librte_lpm/rte_lpm_neon.h
new file mode 100644
index 0000000..6ec4255
--- /dev/null
+++ b/lib/librte_lpm/rte_lpm_neon.h
@@ -0,0 +1,172 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2015 Cavium Networks. All rights reserved.
+ * All rights reserved.
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Derived rte_lpm_lookupx4 implementation from lib/librte_lpm/rte_lpm.h
+ *
+ * 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 Cavium Networks 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_NEON_H_
+#define _RTE_LPM_NEON_H_
+
+/**
+ * @file
+ * RTE Longest Prefix Match (LPM) lookup for neon
+ */
+
+#include <rte_branch_prediction.h>
+#include <rte_byteorder.h>
+#include <rte_memory.h>
+#include <rte_common.h>
+#include <rte_vect.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/**
+ * Lookup four IP addresses in an LPM table.
+ *
+ * @param lpm
+ * LPM object handle
+ * @param ip
+ * Four IPs to be looked up in the LPM table
+ * @param hop
+ * Next hop of the most specific rule found for IP (valid on lookup hit
only).
+ * This is an 4 elements array of two byte values.
+ * If the lookup was succesfull for the given IP, then least significant byte
+ * of the corresponding element is the actual next hop and the most
+ * significant byte is zero.
+ * If the lookup for the given IP failed, then corresponding element would
+ * contain default value, see description of then next parameter.
+ * @param defv
+ * Default value to populate into corresponding element of hop[] array,
+ * if lookup would fail.
+ */
+static inline void
+rte_lpm_lookupx4(const struct rte_lpm *lpm, __m128i ip, uint16_t hop[4],
+ uint16_t defv)
+{
+ uint32x4_t i24;
+ rte_xmm_t i8;
+ uint16_t tbl[4];
+ uint64_t idx, pt;
+
+ const uint32_t mask = UINT8_MAX;
+ const int32x4_t mask8 = vdupq_n_s32(mask);
+
+ /*
+ * RTE_LPM_VALID_EXT_ENTRY_BITMASK for 4 LPM entries
+ * as one 64-bit value (0x0300030003000300).
+ */
+ const uint64_t mask_xv =
+ ((uint64_t)RTE_LPM_VALID_EXT_ENTRY_BITMASK |
+ (uint64_t)RTE_LPM_VALID_EXT_ENTRY_BITMASK << 16 |
+ (uint64_t)RTE_LPM_VALID_EXT_ENTRY_BITMASK << 32 |
+ (uint64_t)RTE_LPM_VALID_EXT_ENTRY_BITMASK << 48);
+
+ /*
+ * RTE_LPM_LOOKUP_SUCCESS for 4 LPM entries
+ * as one 64-bit value (0x0100010001000100).
+ */
+ const uint64_t mask_v =
+ ((uint64_t)RTE_LPM_LOOKUP_SUCCESS |
+ (uint64_t)RTE_LPM_LOOKUP_SUCCESS << 16 |
+ (uint64_t)RTE_LPM_LOOKUP_SUCCESS << 32 |
+ (uint64_t)RTE_LPM_LOOKUP_SUCCESS << 48);
+
+ /* get 4 indexes for tbl24[]. */
+ i24 = vshrq_n_u32((uint32x4_t)ip, CHAR_BIT);
+
+ /* extract values from tbl24[] */
+ idx = vgetq_lane_u64((uint64x2_t)i24, 0);
+
+ tbl[0] = *(const uint16_t *)&lpm->tbl24[(uint32_t)idx];
+ tbl[1] = *(const uint16_t *)&lpm->tbl24[idx >> 32];
+
+ idx = vgetq_lane_u64((uint64x2_t)i24, 1);
+
+ tbl[2] = *(const uint16_t *)&lpm->tbl24[(uint32_t)idx];
+ tbl[3] = *(const uint16_t *)&lpm->tbl24[idx >> 32];
+
+ /* get 4 indexes for tbl8[]. */
+ i8.x = vandq_s32(ip, mask8);
+
+ pt = (uint64_t)tbl[0] |
+ (uint64_t)tbl[1] << 16 |
+ (uint64_t)tbl[2] << 32 |
+ (uint64_t)tbl[3] << 48;
+
+ /* search successfully finished for all 4 IP addresses. */
+ if (likely((pt & mask_xv) == mask_v)) {
+ uintptr_t ph = (uintptr_t)hop;
+ *(uint64_t *)ph = pt & 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;
+ tbl[0] = *(const uint16_t *)&lpm->tbl8[i8.u32[0]];
+ }
+ if (unlikely((pt >> 16 & 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;
+ tbl[1] = *(const uint16_t *)&lpm->tbl8[i8.u32[1]];
+ }
+ if (unlikely((pt >> 32 & 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;
+ tbl[2] = *(const uint16_t *)&lpm->tbl8[i8.u32[2]];
+ }
+ if (unlikely((pt >> 48 & 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;
+ tbl[3] = *(const uint16_t *)&lpm->tbl8[i8.u32[3]];
+ }
+
+ hop[0] = (tbl[0] & RTE_LPM_LOOKUP_SUCCESS) ? (uint8_t)tbl[0] : defv;
+ hop[1] = (tbl[1] & RTE_LPM_LOOKUP_SUCCESS) ? (uint8_t)tbl[1] : defv;
+ hop[2] = (tbl[2] & RTE_LPM_LOOKUP_SUCCESS) ? (uint8_t)tbl[2] : defv;
+ hop[3] = (tbl[3] & RTE_LPM_LOOKUP_SUCCESS) ? (uint8_t)tbl[3] : defv;
+}
+
+#endif /* _RTE_LPM_NEON_H_ */
--
2.1.0
