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authorDave Wallace <dwallacelf@gmail.com>2017-10-24 01:32:41 -0400
committerDave Wallace <dwallacelf@gmail.com>2017-10-24 01:32:41 -0400
commit71612d61930e57e7c8ebf9e5647b15a4b23720b2 (patch)
tree3c135af6d40442f5ae9f8397c62080e2b7e3f342 /src/vnet/gre
parent92b0275a364022af6ab828dfac83e38c0117cfe6 (diff)
Add extern to *_main global variable declarations in header files.
- Global variables declared in header files without the use of the 'extern' keword will result in multiple instances of the variable to be created by the compiler -- one for each different source file in which the the header file is included. This results in wasted memory allocated in the BSS segments as well as potentially introducing bugs in the application. Change-Id: I6ef1790b60a0bd9dd3994f8510723decf258b0cc Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Diffstat (limited to 'src/vnet/gre')
-rw-r--r--src/vnet/gre/gre.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/gre/gre.h b/src/vnet/gre/gre.h
index ad3e025a0ff..9c12eb4bc13 100644
--- a/src/vnet/gre/gre.h
+++ b/src/vnet/gre/gre.h
@@ -195,7 +195,7 @@ gre_get_protocol_info (gre_main_t * em, gre_protocol_t protocol)
return p ? vec_elt_at_index (em->protocol_infos, p[0]) : 0;
}
-gre_main_t gre_main;
+extern gre_main_t gre_main;
/* Register given node index to take input for given gre type. */
void