Enumify interface flags

clang will emit a warning when the wrong enum type is passed to a
function whose arguments are an enum type. free bug finding...

Change-Id: I62215d8ef22c7527a31272e31f5d190e4e762e53
Signed-off-by: Neale Ranns <nranns@cisco.com>

3 files changed, 62 insertions, 42 deletions

diff --git a/src/vnet/interface.c b/src/vnet/interface.c
index dba5a667b22..dff1793712a 100644
--- a/src/vnet/interface.c
+++ b/src/vnet/interface.c
@@ -44,18 +44,25 @@
 #include <vnet/adj/adj_mcast.h>
 #include <vnet/l2/l2_input.h>
 
-#define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0)
-#define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1)
+typedef enum vnet_interface_helper_flags_t_
+{
+  VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE = (1 << 0),
+  VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE = (1 << 1),
+} vnet_interface_helper_flags_t;
 
 static clib_error_t *vnet_hw_interface_set_flags_helper (vnet_main_t * vnm,
 							 u32 hw_if_index,
-							 u32 flags,
-							 u32 helper_flags);
+							 vnet_hw_interface_flags_t
+							 flags,
+							 vnet_interface_helper_flags_t
+							 helper_flags);
 
 static clib_error_t *vnet_sw_interface_set_flags_helper (vnet_main_t * vnm,
 							 u32 sw_if_index,
-							 u32 flags,
-							 u32 helper_flags);
+							 vnet_sw_interface_flags_t
+							 flags,
+							 vnet_interface_helper_flags_t
+							 helper_flags);
 
 static clib_error_t *vnet_hw_interface_set_class_helper (vnet_main_t * vnm,
 							 u32 hw_if_index,
@@ -260,7 +267,9 @@ call_sw_interface_add_del_callbacks (vnet_main_t * vnm, u32 sw_if_index,
 
 static clib_error_t *
 vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index,
-				    u32 flags, u32 helper_flags)
+				    vnet_hw_interface_flags_t flags,
+				    vnet_interface_helper_flags_t
+				    helper_flags)
 {
   vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
   vnet_hw_interface_class_t *hw_class =
@@ -308,7 +317,9 @@ done:
 
 static clib_error_t *
 vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index,
-				    u32 flags, u32 helper_flags)
+				    vnet_sw_interface_flags_t flags,
+				    vnet_interface_helper_flags_t
+				    helper_flags)
 {
   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
   u32 mask;
@@ -466,7 +477,8 @@ done:
 }
 
 clib_error_t *
-vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
+vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index,
+			     vnet_hw_interface_flags_t flags)
 {
   return vnet_hw_interface_set_flags_helper
     (vnm, hw_if_index, flags,
@@ -474,7 +486,8 @@ vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
 }
 
 clib_error_t *
-vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
+vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index,
+			     vnet_sw_interface_flags_t flags)
 {
   return vnet_sw_interface_set_flags_helper
     (vnm, sw_if_index, flags,
diff --git a/src/vnet/interface.h b/src/vnet/interface.h
index 7ce6aafdf54..5c15d29f453 100644
--- a/src/vnet/interface.h
+++ b/src/vnet/interface.h
@@ -482,38 +482,40 @@ static void __vnet_rm_hw_interface_class_registration_##x (void)        \
 }                                                                       \
 __VA_ARGS__ vnet_hw_interface_class_t x
 
-/* Hardware-interface.  This corresponds to a physical wire
-   that packets flow over. */
-typedef struct vnet_hw_interface_t
+typedef enum vnet_hw_interface_flags_t_
 {
-  /* Interface name. */
-  u8 *name;
-
-  u32 flags;
   /* Hardware link state is up. */
-#define VNET_HW_INTERFACE_FLAG_LINK_UP		(1 << 0)
+  VNET_HW_INTERFACE_FLAG_LINK_UP = (1 << 0),
   /* Hardware duplex state */
-#define VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT	1
-#define VNET_HW_INTERFACE_FLAG_HALF_DUPLEX	(1 << 1)
-#define VNET_HW_INTERFACE_FLAG_FULL_DUPLEX	(1 << 2)
+  VNET_HW_INTERFACE_FLAG_HALF_DUPLEX = (1 << 1),
+  VNET_HW_INTERFACE_FLAG_FULL_DUPLEX = (1 << 2),
+
+  /* Hardware link speed */
+  VNET_HW_INTERFACE_FLAG_SPEED_10M = (1 << 3),
+  VNET_HW_INTERFACE_FLAG_SPEED_100M = (1 << 4),
+  VNET_HW_INTERFACE_FLAG_SPEED_1G = (1 << 5),
+  VNET_HW_INTERFACE_FLAG_SPEED_2_5G = (1 << 6),
+  VNET_HW_INTERFACE_FLAG_SPEED_5G = (1 << 7),
+  VNET_HW_INTERFACE_FLAG_SPEED_10G = (1 << 8),
+  VNET_HW_INTERFACE_FLAG_SPEED_20G = (1 << 9),
+  VNET_HW_INTERFACE_FLAG_SPEED_25G = (1 << 10),
+  VNET_HW_INTERFACE_FLAG_SPEED_40G = (1 << 11),
+  VNET_HW_INTERFACE_FLAG_SPEED_50G = (1 << 12),
+  VNET_HW_INTERFACE_FLAG_SPEED_56G = (1 << 13),
+  VNET_HW_INTERFACE_FLAG_SPEED_100G = (1 << 14),
+
+  /* rx mode flags */
+  VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE = (1 << 16),
+
+  /* tx checksum offload */
+  VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD = (1 << 17),
+} vnet_hw_interface_flags_t;
+
+#define VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT 1
+#define VNET_HW_INTERFACE_FLAG_SPEED_SHIFT  3
 #define VNET_HW_INTERFACE_FLAG_DUPLEX_MASK	\
   (VNET_HW_INTERFACE_FLAG_HALF_DUPLEX |		\
    VNET_HW_INTERFACE_FLAG_FULL_DUPLEX)
-
-  /* Hardware link speed */
-#define VNET_HW_INTERFACE_FLAG_SPEED_SHIFT	3
-#define VNET_HW_INTERFACE_FLAG_SPEED_10M	(1 << 3)
-#define VNET_HW_INTERFACE_FLAG_SPEED_100M	(1 << 4)
-#define VNET_HW_INTERFACE_FLAG_SPEED_1G		(1 << 5)
-#define VNET_HW_INTERFACE_FLAG_SPEED_2_5G	(1 << 6)
-#define VNET_HW_INTERFACE_FLAG_SPEED_5G		(1 << 7)
-#define VNET_HW_INTERFACE_FLAG_SPEED_10G	(1 << 8)
-#define VNET_HW_INTERFACE_FLAG_SPEED_20G	(1 << 9)
-#define VNET_HW_INTERFACE_FLAG_SPEED_25G	(1 << 10)
-#define VNET_HW_INTERFACE_FLAG_SPEED_40G	(1 << 11)
-#define VNET_HW_INTERFACE_FLAG_SPEED_50G	(1 << 12)
-#define VNET_HW_INTERFACE_FLAG_SPEED_56G	(1 << 13)
-#define VNET_HW_INTERFACE_FLAG_SPEED_100G	(1 << 14)
 #define VNET_HW_INTERFACE_FLAG_SPEED_MASK	\
   (VNET_HW_INTERFACE_FLAG_SPEED_10M |		\
    VNET_HW_INTERFACE_FLAG_SPEED_100M |		\
@@ -528,11 +530,15 @@ typedef struct vnet_hw_interface_t
    VNET_HW_INTERFACE_FLAG_SPEED_56G |		\
    VNET_HW_INTERFACE_FLAG_SPEED_100G)
 
-  /* rx mode flags */
-#define VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE (1 << 16)
+/* Hardware-interface.  This corresponds to a physical wire
+   that packets flow over. */
+typedef struct vnet_hw_interface_t
+{
+  /* Interface name. */
+  u8 *name;
 
-  /* tx checksum offload */
-#define VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD (1 << 17)
+  /* flags */
+  vnet_hw_interface_flags_t flags;
 
   /* Hardware address as vector.  Zero (e.g. zero-length vector) if no
      address for this class (e.g. PPP). */
@@ -686,6 +692,7 @@ extern vnet_mtu_t vnet_link_to_mtu (vnet_link_t link);
 
 typedef enum vnet_sw_interface_flags_t_
 {
+  VNET_SW_INTERFACE_FLAG_ADMIN_NONE = 0,
   /* Interface is "up" meaning administratively up.
      Up in the sense of link state being up is maintained by hardware interface. */
   VNET_SW_INTERFACE_FLAG_ADMIN_UP = (1 << 0),
diff --git a/src/vnet/interface_funcs.h b/src/vnet/interface_funcs.h
index 557ed146a3a..00fc289b46a 100644
--- a/src/vnet/interface_funcs.h
+++ b/src/vnet/interface_funcs.h
@@ -320,11 +320,11 @@ vnet_put_frame_to_sw_interface (vnet_main_t * vnm, u32 sw_if_index,
 
 /* Change interface flags (e.g. up, down, enable, disable). */
 clib_error_t *vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index,
-					   u32 flags);
+					   vnet_hw_interface_flags_t flags);
 
 /* Change interface flags (e.g. up, down, enable, disable). */
 clib_error_t *vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index,
-					   u32 flags);
+					   vnet_sw_interface_flags_t flags);
 
 /* Change interface class. */
 clib_error_t *vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,