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-rw-r--r--src/vlib/buffer.c114
-rw-r--r--src/vlib/buffer.h4
-rw-r--r--src/vlib/buffer_funcs.h4
3 files changed, 82 insertions, 40 deletions
diff --git a/src/vlib/buffer.c b/src/vlib/buffer.c
index 9312e8c0e47..0e972caadc9 100644
--- a/src/vlib/buffer.c
+++ b/src/vlib/buffer.c
@@ -493,9 +493,9 @@ vlib_buffer_chain_append_data_with_alloc (vlib_main_t * vm,
return copied;
}
-clib_error_t *
-vlib_buffer_pool_create (vlib_main_t * vm, u8 index, char *name,
- u32 data_size, u32 physmem_map_index)
+u8
+vlib_buffer_pool_create (vlib_main_t * vm, char *name, u32 data_size,
+ u32 physmem_map_index)
{
vlib_buffer_main_t *bm = vm->buffer_main;
vlib_buffer_pool_t *bp;
@@ -503,17 +503,12 @@ vlib_buffer_pool_create (vlib_main_t * vm, u8 index, char *name,
uword start = pointer_to_uword (m->base);
uword size = (uword) m->n_pages << m->log2_page_size;
uword i, j;
- u32 alloc_size, n_alloc_per_page;;
-
- vec_validate_aligned (bm->buffer_pools, index, CLIB_CACHE_LINE_BYTES);
- bp = vec_elt_at_index (bm->buffer_pools, index);
+ u32 alloc_size, n_alloc_per_page;
- if (bp->start)
- return clib_error_return (0, "buffer with index %u already exists",
- index);
+ if (vec_len (bm->buffer_pools) >= 255)
+ return ~0;
- if (index >= 255)
- return clib_error_return (0, "buffer index must be < 255", index);
+ vec_add2_aligned (bm->buffer_pools, bp, 1, CLIB_LOG2_CACHE_LINE_BYTES);
if (bm->buffer_mem_size == 0)
{
@@ -581,8 +576,7 @@ vlib_buffer_pool_create (vlib_main_t * vm, u8 index, char *name,
}
bp->n_buffers = vec_len (bp->buffers);
-
- return 0;
+ return bp->index;
}
static u8 *
@@ -659,7 +653,8 @@ vlib_buffer_worker_init (vlib_main_t * vm)
VLIB_WORKER_INIT_FUNCTION (vlib_buffer_worker_init);
static clib_error_t *
-vlib_buffer_main_init_numa_node (struct vlib_main_t *vm, u32 numa_node)
+vlib_buffer_main_init_numa_node (struct vlib_main_t *vm, u32 numa_node,
+ u8 * index)
{
vlib_buffer_main_t *bm = vm->buffer_main;
clib_error_t *error;
@@ -703,9 +698,14 @@ retry:
vec_reset_length (name);
name = format (name, "default-numa-%d%c", numa_node, 0);
- return vlib_buffer_pool_create (vm, numa_node, (char *) name,
- vlib_buffer_get_default_data_size (vm),
- physmem_map_index);
+ *index = vlib_buffer_pool_create (vm, (char *) name,
+ vlib_buffer_get_default_data_size (vm),
+ physmem_map_index);
+
+ if (*index == (u8) ~ 0)
+ return clib_error_return (0, "maximum number of buffer pools reached");
+
+ return 0;
}
void
@@ -790,10 +790,10 @@ vlib_buffer_main_init (struct vlib_main_t * vm)
{
vlib_buffer_main_t *bm;
clib_error_t *err;
- clib_bitmap_t *bmp = 0;
+ clib_bitmap_t *bmp = 0, *bmp_has_memory = 0;
u32 numa_node;
vlib_buffer_pool_t *bp;
- u8 *name;
+ u8 *name = 0, first_valid_buffer_pool_index = ~0;
vlib_buffer_main_alloc (vm);
@@ -803,42 +803,82 @@ vlib_buffer_main_init (struct vlib_main_t * vm)
clib_spinlock_init (&bm->buffer_known_hash_lockp);
- err = clib_sysfs_read ("/sys/devices/system/node/possible", "%U",
- unformat_bitmap_list, &bmp);
- if (err)
+ if ((err = clib_sysfs_read ("/sys/devices/system/node/online", "%U",
+ unformat_bitmap_list, &bmp)))
+ clib_error_free (err);
+
+ if ((err = clib_sysfs_read ("/sys/devices/system/node/has_memory", "%U",
+ unformat_bitmap_list, &bmp_has_memory)))
+ clib_error_free (err);
+
+ if (bmp && bmp_has_memory)
+ bmp = clib_bitmap_and (bmp, bmp_has_memory);
+
+ /* no info from sysfs, assuming that only numa 0 exists */
+ if (bmp == 0)
+ bmp = clib_bitmap_set (bmp, 0, 1);
+
+ if (clib_bitmap_last_set (bmp) >= VLIB_BUFFER_MAX_NUMA_NODES)
+ clib_panic ("system have more than %u NUMA nodes",
+ VLIB_BUFFER_MAX_NUMA_NODES);
+
+ /* *INDENT-OFF* */
+ clib_bitmap_foreach (numa_node, bmp,
+ {
+ u8 *index = bm->default_buffer_pool_index_for_numa + numa_node;
+ index[0] = ~0;
+ if ((err = vlib_buffer_main_init_numa_node (vm, numa_node, index)))
+ {
+ clib_error_report (err);
+ clib_error_free (err);
+ continue;
+ }
+
+ if (first_valid_buffer_pool_index == 0xff)
+ first_valid_buffer_pool_index = index[0];
+ });
+ /* *INDENT-ON* */
+
+ if (first_valid_buffer_pool_index == (u8) ~ 0)
{
- /* no info from sysfs, assuming that only numa 0 exists */
- clib_error_free (err);
- bmp = clib_bitmap_set (bmp, 0, 1);
+ err = clib_error_return (0, "failed to allocate buffer pool(s)");
+ goto done;
}
/* *INDENT-OFF* */
- clib_bitmap_foreach (numa_node, bmp, {
- if ((err = vlib_buffer_main_init_numa_node(vm, numa_node)))
- goto done;
+ clib_bitmap_foreach (numa_node, bmp,
+ {
+ if (bm->default_buffer_pool_index_for_numa[numa_node] == (u8) ~0)
+ bm->default_buffer_pool_index_for_numa[numa_node] =
+ first_valid_buffer_pool_index;
});
/* *INDENT-ON* */
- bm->n_numa_nodes = clib_bitmap_last_set (bmp) + 1;
-
vec_foreach (bp, bm->buffer_pools)
{
- name = format (0, "/buffer-pools/%s/cached%c", bp->name, 0);
+ if (bp->n_buffers == 0)
+ continue;
+
+ vec_reset_length (name);
+ name = format (name, "/buffer-pools/%s/cached%c", bp->name, 0);
stat_segment_register_gauge (name, buffer_gauges_update_cached_fn,
bp - bm->buffer_pools);
- vec_free (name);
- name = format (0, "/buffer-pools/%s/used%c", bp->name, 0);
+
+ vec_reset_length (name);
+ name = format (name, "/buffer-pools/%s/used%c", bp->name, 0);
stat_segment_register_gauge (name, buffer_gauges_update_used_fn,
bp - bm->buffer_pools);
- vec_free (name);
- name = format (0, "/buffer-pools/%s/available%c", bp->name, 0);
+
+ vec_reset_length (name);
+ name = format (name, "/buffer-pools/%s/available%c", bp->name, 0);
stat_segment_register_gauge (name, buffer_gauges_update_available_fn,
bp - bm->buffer_pools);
- vec_free (name);
}
done:
vec_free (bmp);
+ vec_free (bmp_has_memory);
+ vec_free (name);
return err;
}
diff --git a/src/vlib/buffer.h b/src/vlib/buffer.h
index 31baf5fd21e..514e73bd7ca 100644
--- a/src/vlib/buffer.h
+++ b/src/vlib/buffer.h
@@ -394,6 +394,8 @@ typedef struct
vlib_buffer_t buffer_template;
} vlib_buffer_pool_t;
+#define VLIB_BUFFER_MAX_NUMA_NODES 32
+
typedef struct
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
@@ -409,7 +411,7 @@ typedef struct
has never been allocated. */
uword *buffer_known_hash;
clib_spinlock_t buffer_known_hash_lockp;
- u32 n_numa_nodes;
+ u8 default_buffer_pool_index_for_numa[VLIB_BUFFER_MAX_NUMA_NODES];
/* config */
u32 buffers_per_numa;
diff --git a/src/vlib/buffer_funcs.h b/src/vlib/buffer_funcs.h
index 04f775da1f5..3e0234b6b51 100644
--- a/src/vlib/buffer_funcs.h
+++ b/src/vlib/buffer_funcs.h
@@ -126,8 +126,8 @@ vlib_buffer_copy_template (vlib_buffer_t * b, vlib_buffer_t * bt)
always_inline u8
vlib_buffer_pool_get_default_for_numa (vlib_main_t * vm, u32 numa_node)
{
- ASSERT (numa_node < vm->buffer_main->n_numa_nodes);
- return numa_node;
+ ASSERT (numa_node < VLIB_BUFFER_MAX_NUMA_NODES);
+ return vm->buffer_main->default_buffer_pool_index_for_numa[numa_node];
}
/** \brief Translate array of buffer indices into buffer pointers with offset