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buffers: fix bug in free list n_alloc tracking

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This change avoids hitting

ASSERT (vec_len (f->buffers) == f->n_alloc);

in vlib_buffer_delete_free_list_internal by updating
vlib_buffer_free_list_t->n_alloc in case when buffers are removed from
the free list due to overfill.

Change-Id: Id60fa97e8cb0f02ef529b05816265a57a4e7d998
Signed-off-by: Klement Sekera <ksekera@cisco.com>
This commit is contained in:
Klement Sekera
2017-11-09 09:12:12 +01:00
committed by Damjan Marion
parent b966b8e63f
commit 75e974b45f
1 changed files with 1 additions and 0 deletions
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src/vlib/buffer_funcs.h
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@ -828,6 +828,7 @@ vlib_buffer_add_to_free_list (vlib_main_t * vm,
vec_add_aligned (mf->global_buffers, f->buffers, VLIB_FRAME_SIZE,
CLIB_CACHE_LINE_BYTES);
vec_delete (f->buffers, VLIB_FRAME_SIZE, 0);
f->n_alloc -= VLIB_FRAME_SIZE;
clib_spinlock_unlock (&mf->global_buffers_lock);
}
}