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bufmon: add buffer monitoring plugin

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This plugin allow to keep track of buffer usage in VPP graph nodes. The
main use is to detect buffer leakages.

Type: feature

Change-Id: Iadcf4ab98207fab6e2fa375060879bc2a25b711e
Signed-off-by: Benoît Ganne <bganne@cisco.com>
This commit is contained in:
Benoît Ganne
2021-03-09 15:37:49 +01:00
committed by Damjan Marion
parent a13100f3aa
commit e09a2337b8
8 changed files with 422 additions and 24 deletions
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34
src/vlib/buffer.c
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@ -615,20 +615,26 @@ format_vlib_buffer_pool (u8 * s, va_list * va)
return s;
}
static clib_error_t *
show_buffers (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
u8 *
format_vlib_buffer_pool_all (u8 *s, va_list *va)
{
vlib_main_t *vm = va_arg (*va, vlib_main_t *);
vlib_buffer_main_t *bm = vm->buffer_main;
vlib_buffer_pool_t *bp;
vlib_cli_output (vm, "%U", format_vlib_buffer_pool, vm, 0);
s = format (s, "%U", format_vlib_buffer_pool, vm, 0);
/* *INDENT-OFF* */
vec_foreach (bp, bm->buffer_pools)
vlib_cli_output (vm, "%U", format_vlib_buffer_pool, vm, bp);
/* *INDENT-ON* */
s = format (s, "\n%U", format_vlib_buffer_pool, vm, bp);
return s;
}
static clib_error_t *
show_buffers (vlib_main_t *vm, unformat_input_t *input,
vlib_cli_command_t *cmd)
{
vlib_cli_output (vm, "%U", format_vlib_buffer_pool_all, vm);
return 0;
}
@ -971,6 +977,20 @@ vlib_buffer_alloc_may_fail (vlib_main_t * vm, u32 n_buffers)
}
#endif
__clib_export int
vlib_buffer_set_alloc_free_callback (
vlib_main_t *vm, vlib_buffer_alloc_free_callback_t *alloc_callback_fn,
vlib_buffer_alloc_free_callback_t *free_callback_fn)
{
vlib_buffer_main_t *bm = vm->buffer_main;
if ((alloc_callback_fn && bm->alloc_callback_fn) ||
(free_callback_fn && bm->free_callback_fn))
return 1;
bm->alloc_callback_fn = alloc_callback_fn;
bm->free_callback_fn = free_callback_fn;
return 0;
}
/** @endcond */
/*
* fd.io coding-style-patch-verification: ON