[PATCH 12/31] ipv6: More buffers in iaddr_to_string

[Ian Jackson]

We are going to have addresses of multiple address families in various
places, which will mean more calls to iaddr_to_string for the benefit
of the same logging statement.

Increase the number of static buffers used by iaddr_to_string from 2
to 8.

Signed-off-by: Ian Jackson <ijackson at chiark.greenend.org.uk>
---
 util.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/util.c b/util.c
index 3e0f5ce..5c6678d 100644
--- a/util.c
+++ b/util.c
@@ -463,12 +463,16 @@ extern void slilog_part(struct log_if *lf, int priority, const char *message, ..
     va_end(ap);
 }
 
+#define IADDR_NBUFS_SHIFT 3
+#define IADDR_NBUFS (1 << IADDR_NBUFS_SHIFT)
+
 const char *iaddr_to_string(const union iaddr *ia)
 {
-    static char bufs[2][100];
+    static char bufs[IADDR_NBUFS][100];
     static int b;
 
-    b ^= 1;
+    b++;
+    b &= IADDR_NBUFS-1;
 
     assert(ia->sa.sa_family == AF_INET);
 
-- 
1.7.10.4