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examples/l3fwd: use accelerated CRC on ARM

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if machine level CRC extension are available, offload the
hash to machine provide functions e.g. armv8-a CRC extensions
support it

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Reviewed-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
This commit is contained in:
Hemant Agrawal 2016-10-14 16:40:56 +05:30 committed by Thomas Monjalon
parent 8e22aae5cb
commit 2ba4dd4bc0
1 changed files with 14 additions and 10 deletions
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24
examples/l3fwd/l3fwd_em.c
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@ -57,13 +57,17 @@
#include "l3fwd.h" #include "l3fwd.h"
#ifdef RTE_MACHINE_CPUFLAG_SSE4_2 #if defined(RTE_MACHINE_CPUFLAG_SSE4_2) || defined(RTE_MACHINE_CPUFLAG_CRC32)
#define EM_HASH_CRC 1
#endif
#ifdef EM_HASH_CRC
#include <rte_hash_crc.h> #include <rte_hash_crc.h>
#define DEFAULT_HASH_FUNC rte_hash_crc #define DEFAULT_HASH_FUNC rte_hash_crc
#else #else
#include <rte_jhash.h> #include <rte_jhash.h>
#define DEFAULT_HASH_FUNC rte_jhash #define DEFAULT_HASH_FUNC rte_jhash
#endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */ #endif
#define IPV6_ADDR_LEN 16 #define IPV6_ADDR_LEN 16
@ -168,17 +172,17 @@ ipv4_hash_crc(const void *data, __rte_unused uint32_t data_len,
t = k->proto; t = k->proto;
p = (const uint32_t *)&k->port_src; p = (const uint32_t *)&k->port_src;
#ifdef RTE_MACHINE_CPUFLAG_SSE4_2 #ifdef EM_HASH_CRC
init_val = rte_hash_crc_4byte(t, init_val); init_val = rte_hash_crc_4byte(t, init_val);
init_val = rte_hash_crc_4byte(k->ip_src, init_val); init_val = rte_hash_crc_4byte(k->ip_src, init_val);
init_val = rte_hash_crc_4byte(k->ip_dst, init_val); init_val = rte_hash_crc_4byte(k->ip_dst, init_val);
init_val = rte_hash_crc_4byte(*p, init_val); init_val = rte_hash_crc_4byte(*p, init_val);
#else /* RTE_MACHINE_CPUFLAG_SSE4_2 */ #else
init_val = rte_jhash_1word(t, init_val); init_val = rte_jhash_1word(t, init_val);
init_val = rte_jhash_1word(k->ip_src, init_val); init_val = rte_jhash_1word(k->ip_src, init_val);
init_val = rte_jhash_1word(k->ip_dst, init_val); init_val = rte_jhash_1word(k->ip_dst, init_val);
init_val = rte_jhash_1word(*p, init_val); init_val = rte_jhash_1word(*p, init_val);
#endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */ #endif
return init_val; return init_val;
} }
@ -190,16 +194,16 @@ ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len,
const union ipv6_5tuple_host *k; const union ipv6_5tuple_host *k;
uint32_t t; uint32_t t;
const uint32_t *p; const uint32_t *p;
#ifdef RTE_MACHINE_CPUFLAG_SSE4_2 #ifdef EM_HASH_CRC
const uint32_t *ip_src0, *ip_src1, *ip_src2, *ip_src3; const uint32_t *ip_src0, *ip_src1, *ip_src2, *ip_src3;
const uint32_t *ip_dst0, *ip_dst1, *ip_dst2, *ip_dst3; const uint32_t *ip_dst0, *ip_dst1, *ip_dst2, *ip_dst3;
#endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */ #endif
k = data; k = data;
t = k->proto; t = k->proto;
p = (const uint32_t *)&k->port_src; p = (const uint32_t *)&k->port_src;
#ifdef RTE_MACHINE_CPUFLAG_SSE4_2 #ifdef EM_HASH_CRC
ip_src0 = (const uint32_t *) k->ip_src; ip_src0 = (const uint32_t *) k->ip_src;
ip_src1 = (const uint32_t *)(k->ip_src+4); ip_src1 = (const uint32_t *)(k->ip_src+4);
ip_src2 = (const uint32_t *)(k->ip_src+8); ip_src2 = (const uint32_t *)(k->ip_src+8);
@ -218,14 +222,14 @@ ipv6_hash_crc(const void *data, __rte_unused uint32_t data_len,
init_val = rte_hash_crc_4byte(*ip_dst2, init_val); init_val = rte_hash_crc_4byte(*ip_dst2, init_val);
init_val = rte_hash_crc_4byte(*ip_dst3, init_val); init_val = rte_hash_crc_4byte(*ip_dst3, init_val);
init_val = rte_hash_crc_4byte(*p, init_val); init_val = rte_hash_crc_4byte(*p, init_val);
#else /* RTE_MACHINE_CPUFLAG_SSE4_2 */ #else
init_val = rte_jhash_1word(t, init_val); init_val = rte_jhash_1word(t, init_val);
init_val = rte_jhash(k->ip_src, init_val = rte_jhash(k->ip_src,
sizeof(uint8_t) * IPV6_ADDR_LEN, init_val); sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
init_val = rte_jhash(k->ip_dst, init_val = rte_jhash(k->ip_dst,
sizeof(uint8_t) * IPV6_ADDR_LEN, init_val); sizeof(uint8_t) * IPV6_ADDR_LEN, init_val);
init_val = rte_jhash_1word(*p, init_val); init_val = rte_jhash_1word(*p, init_val);
#endif /* RTE_MACHINE_CPUFLAG_SSE4_2 */ #endif
return init_val; return init_val;
} }