[PATCH] iproute2: ndm states should be handled as flags

[Thomas Graf <tgraf@xxxxxxx>]

Stephen,

ndm states are actually flags.

diff -Nru iproute2-2.6.9.orig/ip/ipneigh.c iproute2-2.6.9/ip/ipneigh.c
--- iproute2-2.6.9.orig/ip/ipneigh.c    2004-10-19 22:49:02.000000000 +0200
+++ iproute2-2.6.9/ip/ipneigh.c 2004-11-16 01:12:59.000000000 +0100
@@ -86,33 +86,6 @@
        return 0;
 }
 
-char * nud_state_n2a(__u8 state, char *buf, int len)
-{
-       switch (state) {
-       case NUD_NONE:  
-               return "none";
-       case NUD_INCOMPLETE:    
-               return "incomplete";
-       case NUD_REACHABLE:     
-               return "reachable";
-       case NUD_STALE: 
-               return "stale";
-       case NUD_DELAY: 
-               return "delay";
-       case NUD_PROBE: 
-               return "probe";
-       case NUD_FAILED:        
-               return "failed";
-       case NUD_NOARP: 
-               return "noarp";
-       case NUD_PERMANENT:     
-               return "permanent";
-       default:        
-               snprintf(buf, len, "%x", state);
-               return buf;
-       }
-}
-
 static int flush_update(void)
 {
        if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
@@ -316,8 +289,20 @@
        }
 
        if (r->ndm_state) {
-               SPRINT_BUF(b1);
-               fprintf(fp, " nud %s", nud_state_n2a(r->ndm_state, b1, 
sizeof(b1)));
+               int nud = r->ndm_state;
+               fprintf(fp, " ");
+
+#define PRINT_FLAG(f) if (nud & NUD_##f) { \
+       nud &= ~NUD_##f; fprintf(fp, #f "%s", nud ? "," : ""); }
+               PRINT_FLAG(INCOMPLETE);
+               PRINT_FLAG(REACHABLE);
+               PRINT_FLAG(STALE);
+               PRINT_FLAG(DELAY);
+               PRINT_FLAG(PROBE);
+               PRINT_FLAG(FAILED);
+               PRINT_FLAG(NOARP);
+               PRINT_FLAG(PERMANENT);
+#undef PRINT_FLAG
        }
        fprintf(fp, "\n");