[dpdk-dev] [PATCH 2/2] net/thunderx: remove libm dependency
Jerin Jacob
jerin.jacob at caviumnetworks.com
Thu Jul 6 16:20:25 CEST 2017
Used rte_log2_u32() to replace integer log2() to
remove libm dependency.
Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
drivers/net/thunderx/base/nicvf_hw.c | 8 +++++---
drivers/net/thunderx/base/nicvf_plat.h | 1 +
mk/rte.app.mk | 2 +-
3 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/net/thunderx/base/nicvf_hw.c b/drivers/net/thunderx/base/nicvf_hw.c
index 04b3b69c5..b9baf20dd 100644
--- a/drivers/net/thunderx/base/nicvf_hw.c
+++ b/drivers/net/thunderx/base/nicvf_hw.c
@@ -448,7 +448,8 @@ nicvf_qsize_regbit(uint32_t len, uint32_t len_shift)
{
int val;
- val = ((uint32_t)log2(len) - len_shift);
+ val = nicvf_log2_u32(len) - len_shift;
+
assert(val >= NICVF_QSIZE_MIN_VAL);
assert(val <= NICVF_QSIZE_MAX_VAL);
return val;
@@ -801,7 +802,7 @@ nicvf_rss_reta_update(struct nicvf *nic, uint8_t *tbl, uint32_t max_count)
return NICVF_ERR_RSS_GET_SZ;
assert(rss->rss_size > 0);
- rss->hash_bits = (uint8_t)log2(rss->rss_size);
+ rss->hash_bits = (uint8_t)nicvf_log2_u32(rss->rss_size);
for (idx = 0; idx < rss->rss_size && idx < max_count; idx++)
rss->ind_tbl[idx] = tbl[idx];
@@ -822,7 +823,8 @@ nicvf_rss_reta_query(struct nicvf *nic, uint8_t *tbl, uint32_t max_count)
return NICVF_ERR_RSS_GET_SZ;
assert(rss->rss_size > 0);
- rss->hash_bits = (uint8_t)log2(rss->rss_size);
+ rss->hash_bits = (uint8_t)nicvf_log2_u32(rss->rss_size);
+
for (idx = 0; idx < rss->rss_size && idx < max_count; idx++)
tbl[idx] = rss->ind_tbl[idx];
diff --git a/drivers/net/thunderx/base/nicvf_plat.h b/drivers/net/thunderx/base/nicvf_plat.h
index 3536d8374..fc7d0bcf7 100644
--- a/drivers/net/thunderx/base/nicvf_plat.h
+++ b/drivers/net/thunderx/base/nicvf_plat.h
@@ -59,6 +59,7 @@
/* utils */
#include <rte_common.h>
#define nicvf_min(x, y) RTE_MIN(x, y)
+#define nicvf_log2_u32(x) rte_log2_u32(x)
/* byte order */
#include <rte_byteorder.h>
diff --git a/mk/rte.app.mk b/mk/rte.app.mk
index 7d71a4975..238966504 100644
--- a/mk/rte.app.mk
+++ b/mk/rte.app.mk
@@ -136,7 +136,7 @@ _LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_RING) += -lrte_pmd_ring
_LDLIBS-$(CONFIG_RTE_LIBRTE_SFC_EFX_PMD) += -lrte_pmd_sfc_efx
_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_SZEDATA2) += -lrte_pmd_szedata2 -lsze2
_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_TAP) += -lrte_pmd_tap
-_LDLIBS-$(CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD) += -lrte_pmd_thunderx_nicvf -lm
+_LDLIBS-$(CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD) += -lrte_pmd_thunderx_nicvf
_LDLIBS-$(CONFIG_RTE_LIBRTE_VIRTIO_PMD) += -lrte_pmd_virtio
ifeq ($(CONFIG_RTE_LIBRTE_VHOST),y)
_LDLIBS-$(CONFIG_RTE_LIBRTE_PMD_VHOST) += -lrte_pmd_vhost
--
2.13.2
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