On Thu, Feb 11, 2016 at 12:46:33PM +0100, Thomas Monjalon wrote:

2016-01-29 09:40, Jerin Jacob:

quoted

--- a/lib/librte_lpm/Makefile
+++ b/lib/librte_lpm/Makefile
+ifneq ($(filter y,$(CONFIG_RTE_ARCH_ARM) $(CONFIG_RTE_ARCH_ARM64)),)
+SYMLINK-$(CONFIG_RTE_LIBRTE_LPM)-include += rte_lpm_neon.h
+else
 SYMLINK-$(CONFIG_RTE_LIBRTE_LPM)-include += rte_lpm_sse.h
+endif

[...]

quoted

--- a/lib/librte_lpm/rte_lpm.h
+++ b/lib/librte_lpm/rte_lpm.h
+#if defined(RTE_ARCH_ARM) || defined(RTE_ARCH_ARM64)
+#include "rte_lpm_neon.h"
+#else
 #include "rte_lpm_sse.h"
+#endif

Instead of defaulting to x86 SSE, it would be better to replace
"else" by "elif X86/SSE".
I suggest using RTE_ARCH_X86 or RTE_CPUFLAG_SSEx.

Some architectures(tile)[1] are planning to emulate SSE instruction used
in LPM for LPM library support.So that way it makes sense to use SSE as default.

But if anyone has any objections then I can add the check else let
keep in existing way.

[1]
http://dpdk.org/ml/archives/dev/2016-January/031147.html

Jerin

By the way, what is the minimum SSE version required?