net/bnxt: add TruFlow hash function

Added TruFlow hash API for common hash uses across TruFlow
core functions.

Signed-off-by: Mike Baucom <michael.baucom@broadcom.com>
Reviewed-by: Farah Smith <farah.smith@broadcom.com>
Reviewed-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>

diff --git a/doc/guides/rel_notes/release_20_08.rst b/doc/guides/rel_notes/release_20_08.rst
index 29abd6c..7304400 100644 (file)
--- a/doc/guides/rel_notes/release_20_08.rst
+++ b/doc/guides/rel_notes/release_20_08.rst
@@ -119,6 +119,7 @@ New Features
   * Added vector mode support for ARM CPUs.
   * Added support for VLAN push and pop actions.
   * Added support for NAT action items.
+  * Added TruFlow hash API for common hash uses across TruFlow core functions.
 
 * **Updated Cisco enic driver.**
 

diff --git a/drivers/net/bnxt/meson.build b/drivers/net/bnxt/meson.build
index 8529b33..190469e 100644 (file)
--- a/drivers/net/bnxt/meson.build
+++ b/drivers/net/bnxt/meson.build
@@ -47,6 +47,7 @@ sources = files('bnxt_cpr.c',
        'tf_core/tf_global_cfg.c',
        'tf_core/tf_em_host.c',
        'tf_core/tf_shadow_identifier.c',
+       'tf_core/tf_hash.c',
 
        'hcapi/hcapi_cfa_p4.c',
 

diff --git a/drivers/net/bnxt/tf_core/Makefile b/drivers/net/bnxt/tf_core/Makefile
index cca0e2e..cf6aaec 100644 (file)
--- a/drivers/net/bnxt/tf_core/Makefile
+++ b/drivers/net/bnxt/tf_core/Makefile
@@ -32,3 +32,4 @@ SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_core/tf_util.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_core/tf_if_tbl.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_core/tf_global_cfg.c
 SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_core/tf_shadow_identifier.c
+SRCS-$(CONFIG_RTE_LIBRTE_BNXT_PMD) += tf_core/tf_hash.c

diff --git a/drivers/net/bnxt/tf_core/tf_hash.c b/drivers/net/bnxt/tf_core/tf_hash.c
new file mode 100644 (file)
index 0000000..68476cb
--- /dev/null
+++ b/drivers/net/bnxt/tf_core/tf_hash.c
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019-2020 Broadcom
+ * All rights reserved.
+ */
+
+#include "tf_hash.h"
+
+/* CRC polynomial 0xedb88320 */
+static const uint32_t tf_hash_crc32tbl[] = {
+       0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
+       0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+       0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+       0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+       0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+       0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+       0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
+       0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+       0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+       0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+       0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
+       0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+       0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
+       0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+       0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+       0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+       0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
+       0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+       0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
+       0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+       0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+       0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+       0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
+       0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+       0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+       0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+       0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+       0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+       0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
+       0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+       0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
+       0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+       0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+       0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+       0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+       0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+       0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
+       0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+       0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+       0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+       0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
+       0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+       0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
+       0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+       0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+       0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+       0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
+       0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+       0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
+       0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+       0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+       0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+       0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
+       0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+       0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+       0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+       0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+       0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+       0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
+       0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+       0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
+       0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+       0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+       0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
+/**
+ * Calculate a crc32 on the buffer with an initial value and len
+ *
+ * Returns the crc32
+ */
+uint32_t
+tf_hash_calc_crc32i(uint32_t init, uint8_t *buf, uint32_t len)
+{
+       uint32_t crc = init;
+
+       while (len--)
+               crc = tf_hash_crc32tbl[(crc ^ buf[len]) & 0xff] ^
+                       (crc >> 8);
+
+       return crc;
+}
+
+/**
+ * Calculate a crc32 on the buffer with a default initial value
+ *
+ * Returns the crc32
+ */
+uint32_t
+tf_hash_calc_crc32(uint8_t *buf, uint32_t len)
+{
+       uint32_t crc = ~0U;
+
+       crc = tf_hash_calc_crc32i(crc, buf, len);
+
+       return ~crc;
+}

diff --git a/drivers/net/bnxt/tf_core/tf_hash.h b/drivers/net/bnxt/tf_core/tf_hash.h
new file mode 100644 (file)
index 0000000..6b60aff
--- /dev/null
+++ b/drivers/net/bnxt/tf_core/tf_hash.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019-2020 Broadcom
+ * All rights reserved.
+ */
+
+#ifndef _TF_HASH_H_
+#define _TF_HASH_H_
+
+#include "tf_core.h"
+
+/**
+ * Calculate a crc32 on the buffer with an initial value and len
+ *
+ * Returns the crc32
+ */
+uint32_t
+tf_hash_calc_crc32i(uint32_t init, uint8_t *buf, uint32_t len);
+
+/**
+ * Calculate a crc32 on the buffer with a default initial value
+ *
+ * Returns the crc32
+ */
+uint32_t
+tf_hash_calc_crc32(uint8_t *buf, uint32_t len);
+
+#endif