diff options
| author |   Damjan Marion <damarion@cisco.com> | 2024-01-19 21:19:57 +0100 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2024-01-20 18:28:09 +0000 |
| commit | 038dad7ef29b0b724071edb5f8cc7a9845584454 (patch) | |
| tree | fd49f72aa41a215b73be0409dc1f512e1f82bef2 /src/vlib | |
| parent | 5840c66bbc15b265e280997b028442f9fedd92f6 (diff) | |
buffers: add compile-time option to set buffer alignment
Type: improvement
Change-Id: I88c4c45bed0bdd8686e17e4f77a7d32a08c995aa
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vlib')
| -rw-r--r-- | src/vlib/CMakeLists.txt | 6 | ||||
| -rw-r--r-- | src/vlib/buffer.c | 6 | ||||
| -rw-r--r-- | src/vlib/buffer.h | 3 | ||||
| -rw-r--r-- | src/vlib/config.h.in | 3 |
4 files changed, 10 insertions, 8 deletions
diff --git a/src/vlib/CMakeLists.txt b/src/vlib/CMakeLists.txt index 76de4edcde2..9c4121672a5 100644 --- a/src/vlib/CMakeLists.txt +++ b/src/vlib/CMakeLists.txt @@ -22,6 +22,12 @@ else() set(BUFFER_ALLOC_FAULT_INJECTOR 0 CACHE STRING "fault injector off") endif() +if(VPP_PLATFORM_BUFFER_ALIGN) + set(VLIB_BUFFER_ALIGN ${VPP_PLATFORM_BUFFER_ALIGN}) +else() + set(VLIB_BUFFER_ALIGN ${VPP_CACHE_LINE_SIZE}) +endif() + set(PRE_DATA_SIZE 128 CACHE STRING "Buffer headroom size.") if (CMAKE_BUILD_TYPE_UC STREQUAL "DEBUG") diff --git a/src/vlib/buffer.c b/src/vlib/buffer.c index 005326d3906..82fe6412781 100644 --- a/src/vlib/buffer.c +++ b/src/vlib/buffer.c @@ -471,11 +471,7 @@ static uword vlib_buffer_alloc_size (uword ext_hdr_size, uword data_size) { uword alloc_size = ext_hdr_size + sizeof (vlib_buffer_t) + data_size; - alloc_size = CLIB_CACHE_LINE_ROUND (alloc_size); - - /* in case when we have even number of cachelines, we add one more for - * better cache occupancy */ - alloc_size |= CLIB_CACHE_LINE_BYTES; + alloc_size = round_pow2 (alloc_size, VLIB_BUFFER_ALIGN); return alloc_size; } diff --git a/src/vlib/buffer.h b/src/vlib/buffer.h index a747ea9f966..7d45689ed19 100644 --- a/src/vlib/buffer.h +++ b/src/vlib/buffer.h @@ -47,8 +47,7 @@ #include <vppinfra/lock.h> #include <vlib/error.h> /* for vlib_error_t */ -#include <vlib/config.h> /* for __PRE_DATA_SIZE */ -#define VLIB_BUFFER_PRE_DATA_SIZE __PRE_DATA_SIZE +#include <vlib/config.h> /* for VLIB_BUFFER_PRE_DATA_SIZE */ #define VLIB_BUFFER_DEFAULT_DATA_SIZE (2048) diff --git a/src/vlib/config.h.in b/src/vlib/config.h.in index 19ec10cfcca..b233b327d31 100644 --- a/src/vlib/config.h.in +++ b/src/vlib/config.h.in @@ -16,7 +16,8 @@ #ifndef included_vlib_config_h #define included_vlib_config_h -#define __PRE_DATA_SIZE @PRE_DATA_SIZE@ +#define VLIB_BUFFER_PRE_DATA_SIZE @PRE_DATA_SIZE@ +#define VLIB_BUFFER_ALIGN @VLIB_BUFFER_ALIGN@ #define VLIB_BUFFER_ALLOC_FAULT_INJECTOR @BUFFER_ALLOC_FAULT_INJECTOR@ #define VLIB_PROCESS_LOG2_STACK_SIZE @VLIB_PROCESS_LOG2_STACK_SIZE@ |