diff options
| author |   Leyi Rong <leyi.rong@intel.com> | 2023-03-08 13:34:56 +0800 |
|---|---|---|
| committer |   Damjan Marion <dmarion@0xa5.net> | 2023-03-10 15:57:09 +0000 |
| commit | 767a9ab4b1f77760a633ba3de30a0dcad44cb4b1 (patch) | |
| tree | dc742984919960e2dda931734ae2650ce2b5f451 /src/vlib | |
| parent | 7b0d48fbb3ceebcafb18177fba02ab1a9ad4c24e (diff) | |
vlib: 512-bit SIMD version of vlib_buffer_free
Process 8 packets perf batch in vlib_buffer_free_inline() when
CLIB_HAVE_VEC512 is enabled.
Type: improvement
Signed-off-by: Leyi Rong <leyi.rong@intel.com>
Change-Id: I78b8a525bce25ee355c9bf0e0f651698a8c45bda
Diffstat (limited to 'src/vlib')
| -rw-r--r-- | src/vlib/buffer_funcs.h | 70 |
1 files changed, 69 insertions, 1 deletions
diff --git a/src/vlib/buffer_funcs.h b/src/vlib/buffer_funcs.h index 708539957c9..017a70f4fbf 100644 --- a/src/vlib/buffer_funcs.h +++ b/src/vlib/buffer_funcs.h @@ -788,9 +788,16 @@ vlib_buffer_free_inline (vlib_main_t * vm, u32 * buffers, u32 n_buffers, vlib_buffer_t *b[8]; u32 bi, sum = 0, flags, next; +#if defined(CLIB_HAVE_VEC512) + if (n_buffers < 8) +#else if (n_buffers < 4) +#endif goto one_by_one; +#if defined(CLIB_HAVE_VEC512) + vlib_get_buffers (vm, buffers, b, 8); +#else vlib_get_buffers (vm, buffers, b, 4); if (n_buffers >= 12) @@ -801,8 +808,33 @@ vlib_buffer_free_inline (vlib_main_t * vm, u32 * buffers, u32 n_buffers, vlib_prefetch_buffer_header (b[6], LOAD); vlib_prefetch_buffer_header (b[7], LOAD); } +#endif -#if defined(CLIB_HAVE_VEC128) +#if defined(CLIB_HAVE_VEC512) + u8x16 p0, p1, p2, p3, p4, p5, p6, p7, r; + p0 = u8x16_load_unaligned (b[0]); + p1 = u8x16_load_unaligned (b[1]); + p2 = u8x16_load_unaligned (b[2]); + p3 = u8x16_load_unaligned (b[3]); + p4 = u8x16_load_unaligned (b[4]); + p5 = u8x16_load_unaligned (b[5]); + p6 = u8x16_load_unaligned (b[6]); + p7 = u8x16_load_unaligned (b[7]); + + r = p0 ^ bpi_vec.as_u8x16[0]; + r |= p1 ^ bpi_vec.as_u8x16[0]; + r |= p2 ^ bpi_vec.as_u8x16[0]; + r |= p3 ^ bpi_vec.as_u8x16[0]; + r |= p4 ^ bpi_vec.as_u8x16[0]; + r |= p5 ^ bpi_vec.as_u8x16[0]; + r |= p6 ^ bpi_vec.as_u8x16[0]; + r |= p7 ^ bpi_vec.as_u8x16[0]; + r &= bpi_mask.as_u8x16[0]; + r |= + (p0 | p1 | p2 | p3 | p4 | p5 | p6 | p7) & flags_refs_mask.as_u8x16[0]; + + sum = !u8x16_is_all_zero (r); +#elif defined(CLIB_HAVE_VEC128) u8x16 p0, p1, p2, p3, r; p0 = u8x16_load_unaligned (b[0]); p1 = u8x16_load_unaligned (b[1]); @@ -836,6 +868,36 @@ vlib_buffer_free_inline (vlib_main_t * vm, u32 * buffers, u32 n_buffers, if (sum) goto one_by_one; +#if defined(CLIB_HAVE_VEC512) + vlib_buffer_copy_indices (queue + n_queue, buffers, 8); + vlib_buffer_copy_template (b[0], &bt); + vlib_buffer_copy_template (b[1], &bt); + vlib_buffer_copy_template (b[2], &bt); + vlib_buffer_copy_template (b[3], &bt); + vlib_buffer_copy_template (b[4], &bt); + vlib_buffer_copy_template (b[5], &bt); + vlib_buffer_copy_template (b[6], &bt); + vlib_buffer_copy_template (b[7], &bt); + n_queue += 8; + + vlib_buffer_validate (vm, b[0]); + vlib_buffer_validate (vm, b[1]); + vlib_buffer_validate (vm, b[2]); + vlib_buffer_validate (vm, b[3]); + vlib_buffer_validate (vm, b[4]); + vlib_buffer_validate (vm, b[5]); + vlib_buffer_validate (vm, b[6]); + vlib_buffer_validate (vm, b[7]); + + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[1]); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[2]); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[3]); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[4]); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[5]); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[6]); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[7]); +#else vlib_buffer_copy_indices (queue + n_queue, buffers, 4); vlib_buffer_copy_template (b[0], &bt); vlib_buffer_copy_template (b[1], &bt); @@ -852,14 +914,20 @@ vlib_buffer_free_inline (vlib_main_t * vm, u32 * buffers, u32 n_buffers, VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[1]); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[2]); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[3]); +#endif if (n_queue >= queue_size) { vlib_buffer_pool_put (vm, buffer_pool_index, queue, n_queue); n_queue = 0; } +#if defined(CLIB_HAVE_VEC512) + buffers += 8; + n_buffers -= 8; +#else buffers += 4; n_buffers -= 4; +#endif continue; one_by_one: |