Misc: add "extern C" in public header files.

lib/ff_config.h

@@ -27,6 +27,10 @@
 #ifndef __FSTACK_CONFIG_H
 #define __FSTACK_CONFIG_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // dpdk argc, argv, max argc: 4, member of dpdk_config
 #define DPDK_CONFIG_NUM 4
 #define DPDK_CONFIG_MAXLEN 64
@@ -119,4 +123,8 @@ extern struct ff_config ff_global_cfg;
 
 int ff_load_config(int argc, char * const argv[]);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* ifndef __FSTACK_CONFIG_H */

lib/ff_dpdk_if.c

@@ -629,10 +629,6 @@ init_port_start(void)
             dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
         }
 
-        if (!(dev_info.tx_offload_capa & DEV_TX_OFFLOAD_VLAN_INSERT)) {
-            dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
-        }
-
         if (!(dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_TSO) &&
             !(dev_info.tx_offload_capa & DEV_TX_OFFLOAD_UDP_TSO)) {
             dev_info.default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;

lib/ff_epoll.h

@@ -1,11 +1,19 @@
 #ifndef _FF_EPOLL_H
 #define _FF_EPOLL_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <sys/epoll.h>
 
 int ff_epoll_create(int size);
 int ff_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);
 int ff_epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
 

lib/ff_event.h

@@ -27,6 +27,10 @@
 #ifndef _FSTACK_EVENT_H
 #define _FSTACK_EVENT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef _KERNEL
 
 #include <stdint.h>
@@ -146,6 +150,10 @@ struct knlist {
     void *kl_lockarg;           /* argument passed to kl_lockf() */
 };
 
+#endif
+
+#ifdef __cplusplus
+}
 #endif
 #endif