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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/ipsec-gre/ipsec_gre.h
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/ipsec-gre/ipsec_gre.h')
-rw-r--r--src/vnet/ipsec-gre/ipsec_gre.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/vnet/ipsec-gre/ipsec_gre.h b/src/vnet/ipsec-gre/ipsec_gre.h
index a2ca64b6f74..5d56b4e1e1f 100644
--- a/src/vnet/ipsec-gre/ipsec_gre.h
+++ b/src/vnet/ipsec-gre/ipsec_gre.h
@@ -78,7 +78,7 @@ typedef struct
vnet_main_t *vnet_main; /**< convenience */
} ipsec_gre_main_t;
-ipsec_gre_main_t ipsec_gre_main;
+extern ipsec_gre_main_t ipsec_gre_main;
extern vlib_node_registration_t ipsec_gre_input_node;
extern vnet_device_class_t ipsec_gre_device_class;