From ed1a908e535e4333b358d83b472453a2ad6d3f51 Mon Sep 17 00:00:00 2001
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
Date: Fri, 25 Nov 2016 11:51:38 +0100
Subject: BGP: Fix memory leak in graceful restart code

Prefix and bucket tables are initialized when entering established state
but not explicitly freed when leaving it (that is handled by protocol
restart). With graceful restart, BGP may enter and leave established
state multiple times without hard protocol restart causing memory leak.
---
 lib/hash.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'lib/hash.h')

diff --git a/lib/hash.h b/lib/hash.h
index 4239b1d8..6995bbc8 100644
--- a/lib/hash.h
+++ b/lib/hash.h
@@ -25,6 +25,12 @@
     (v).data = mb_allocz(pool, HASH_SIZE(v) * sizeof(* (v).data));	\
   })
 
+#define HASH_FREE(v)							\
+  ({									\
+    mb_free((v).data);							\
+    (v) = (typeof(v)){ };						\
+  })
+
 #define HASH_FIND(v,id,key...)						\
   ({									\
     u32 _h = HASH_FN(v, id, key);					\
-- 
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