diff options
| author |   Zhiyong Yang <zhiyong.yang@intel.com> | 2020-07-08 20:28:36 +0000 |
|---|---|---|
| committer |   Junfeng Wang <drenfong.wang@intel.com> | 2020-09-04 02:34:03 +0000 |
| commit | 5e52417a2aa3b2063a811c6a9f293a79d73bcb43 (patch) | |
| tree | 4b4cdaccaa682c1dddea8617717af5ac4f520ea0 /src/vppinfra/vector_avx512.h | |
| parent | 4a433f46084d05a524154db64d3d7d2567305009 (diff) | |
ip: enhance vtep4_check of tunnel by vector way
This patch aims to improve decap performance by reducing expensive
hash_get callings as less as possible using AVX512 on XEON.
e.g. vxlan, vxlan_gpe, geneve, gtpu.
For the existing code, if vtep4 of the current packet match the last
vtep4_key_t well, expensive hash computation can be avoided and the
code returns directly.
This patch improves tunnel decap multiple flows case greatly by
leveraging 512bit vector register on XEON accommodating 8 vtep4_keys.
It enhances the possiblity of avoiding unnecessary hash computing
once hash key of the current packet hits any one of 8 in the 512bit
cache.
The oldest element in vtep4_cache_t is updated in round-robin order.
vlib_get_buffers is also leveraged in the meanwhile.
Type: improvement
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
Signed-off-by: Ray Kinsella <mdr@ashroe.eu>
Signed-off-by: Junfeng Wang <drenfong.wang@intel.com>
Change-Id: I313103202bd76f2dd638cd942554721b37ddad60
Diffstat (limited to 'src/vppinfra/vector_avx512.h')
| -rw-r--r-- | src/vppinfra/vector_avx512.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/vppinfra/vector_avx512.h b/src/vppinfra/vector_avx512.h index 6eb7c5eaa4d..a51644be1db 100644 --- a/src/vppinfra/vector_avx512.h +++ b/src/vppinfra/vector_avx512.h @@ -246,6 +246,12 @@ u8x64_mask_blend (u8x64 a, u8x64 b, u64 mask) return (u8x64) _mm512_mask_blend_epi8 (mask, (__m512i) a, (__m512i) b); } +static_always_inline u8 +u64x8_mask_is_equal (u64x8 a, u64x8 b) +{ + return _mm512_cmpeq_epu64_mask ((__m512i) a, (__m512i) b); +} + static_always_inline void u32x16_transpose (u32x16 m[16]) { |