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-rw-r--r--src/vlib/buffer.c88
1 files changed, 87 insertions, 1 deletions
diff --git a/src/vlib/buffer.c b/src/vlib/buffer.c
index c44d8e49d40..091799b3f12 100644
--- a/src/vlib/buffer.c
+++ b/src/vlib/buffer.c
@@ -46,6 +46,7 @@
#include <vppinfra/linux/sysfs.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
+#include <vpp/stats/stat_segment.h>
#define VLIB_BUFFER_DEFAULT_BUFFERS_PER_NUMA 16384
#define VLIB_BUFFER_DEFAULT_BUFFERS_PER_NUMA_UNPRIV 8192
@@ -709,13 +710,84 @@ vlib_buffer_main_alloc (vlib_main_t * vm)
bm->default_data_size = VLIB_BUFFER_DEFAULT_DATA_SIZE;
}
+static u32
+buffer_get_cached (vlib_buffer_pool_t * bp)
+{
+ u32 cached = 0;
+ vlib_buffer_pool_thread_t *bpt;
+
+ /* *INDENT-OFF* */
+ vec_foreach (bpt, bp->threads)
+ cached += vec_len (bpt->cached_buffers);
+ /* *INDENT-ON* */
+
+ return cached;
+}
+
+static vlib_buffer_pool_t *
+buffer_get_by_name (vlib_buffer_main_t * bm, char *name)
+{
+ vlib_buffer_pool_t *bp;
+ vec_foreach (bp, bm->buffer_pools)
+ {
+ if (!strcmp ((char *) bp->name, name))
+ return bp;
+ }
+
+ return 0;
+}
+
+static void
+buffer_gauges_update_used_fn (stat_segment_directory_entry_t * e)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vlib_buffer_pool_t *bp;
+
+ bp = buffer_get_by_name (vm->buffer_main,
+ &e->name[sizeof ("/buffer/used/") - 1]);
+ if (!bp)
+ return;
+
+ e->value = bp->n_buffers - vec_len (bp->buffers) - buffer_get_cached (bp);
+}
+
+static void
+buffer_gauges_update_available_fn (stat_segment_directory_entry_t * e)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vlib_buffer_pool_t *bp;
+
+ bp = buffer_get_by_name (vm->buffer_main,
+ &e->name[sizeof ("/buffer/available/") - 1]);
+ if (!bp)
+ return;
+
+ e->value = vec_len (bp->buffers);
+}
+
+static void
+buffer_gauges_update_cached_fn (stat_segment_directory_entry_t * e)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vlib_buffer_pool_t *bp;
+
+ bp = buffer_get_by_name (vm->buffer_main,
+ &e->name[sizeof ("/buffer/cached/") - 1]);
+ if (!bp)
+ return;
+
+ e->value = buffer_get_cached (bp);
+}
+
clib_error_t *
-vlib_buffer_main_init (struct vlib_main_t *vm)
+vlib_buffer_main_init (struct vlib_main_t * vm)
{
vlib_buffer_main_t *bm;
clib_error_t *err;
clib_bitmap_t *bmp = 0;
u32 numa_node;
+ vlib_buffer_pool_t *bp;
+ u8 *name;
vlib_buffer_main_alloc (vm);
@@ -743,6 +815,20 @@ vlib_buffer_main_init (struct vlib_main_t *vm)
bm->n_numa_nodes = clib_bitmap_last_set (bmp) + 1;
+ vec_foreach (bp, bm->buffer_pools)
+ {
+ name = format (0, "/buffer/cached/%s%c", bp->name, 0);
+ stat_segment_register_gauge (name, buffer_gauges_update_cached_fn);
+ vec_free (name);
+ name = format (0, "/buffer/used/%s%c", bp->name, 0);
+ stat_segment_register_gauge (name, buffer_gauges_update_used_fn);
+ vec_free (name);
+ name = format (0, "/buffer/available/%s%c", bp->name, 0);
+ stat_segment_register_gauge (name, buffer_gauges_update_available_fn);
+ vec_free (name);
+ }
+
+
done:
vec_free (bmp);
return err;