svm: reset vector data instead of length

[vpp.git] / src / svm / svm_fifo.h

diff --git a/src/svm/svm_fifo.h b/src/svm/svm_fifo.h
index d5dfc9c..64ed53b 100644 (file)
--- a/src/svm/svm_fifo.h
+++ b/src/svm/svm_fifo.h
@@ -650,7 +650,7 @@ svm_fifo_max_write_chunk (svm_fifo_t * f)
 {
   u32 head, tail;
   f_load_head_tail_prod (f, &head, &tail);
-  return tail > head ? f->size - tail : f_free_count (f, head, tail);
+  return tail >= head ? f->size - tail : f_free_count (f, head, tail);
 }
 
 static inline u8 *