X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fmeta-flow.h;h=d3d56d8923329eca8b14fbb4b1dc1dabfc79f825;hb=0d7e2fe4d5decafe1d52c4dbdb0d77d17ac53a80;hp=0967633f53b887a3875281ed1cbe14a58c480748;hpb=2716c204ed47c5f572e3d1a0138c964f44be90af;p=sliver-openvswitch.git

diff --git a/lib/meta-flow.h b/lib/meta-flow.h
index 0967633f5..d3d56d892 100644
--- a/lib/meta-flow.h
+++ b/lib/meta-flow.h
@@ -58,9 +58,6 @@ enum mf_field_id {
 #endif
 #if FLOW_N_REGS > 7
     MFF_REG7,                   /* be32 */
-#endif
-#if FLOW_N_REGS > 8
-#error
 #endif
 
     /* L2. */
@@ -113,6 +110,40 @@ enum mf_field_id {
     MFF_N_IDS
 };
 
+/* Use this macro as CASE_MFF_REGS: in a switch statement to choose all of the
+ * MFF_REGx cases. */
+#if FLOW_N_REGS == 1
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0
+#elif FLOW_N_REGS == 2
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0: case MFF_REG1
+#elif FLOW_N_REGS == 3
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0: case MFF_REG1: case MFF_REG2
+#elif FLOW_N_REGS == 4
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3
+#elif FLOW_N_REGS == 5
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+    case MFF_REG4
+#elif FLOW_N_REGS == 6
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+    case MFF_REG4: case MFF_REG5
+#elif FLOW_N_REGS == 7
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+    case MFF_REG4: case MFF_REG5: case MFF_REG6
+#elif FLOW_N_REGS == 8
+# define CASE_MFF_REGS                                          \
+    case MFF_REG0: case MFF_REG1: case MFF_REG2: case MFF_REG3: \
+    case MFF_REG4: case MFF_REG5: case MFF_REG6: case MFF_REG7
+#else
+# error
+#endif
+
 /* Prerequisites for matching a field.
  *
  * A field may only be matched if the correct lower-level protocols are also