From: Timo Teräs <timo.teras@iki.fi>
Date: Wed, 29 Apr 2015 06:43:05 +0000 (+0300)
Subject: sockunion: add hash function
X-Git-Tag: frr-2.0-rc1~1264
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=7cb5cdbb346504cac853499b2977b47c34ea0a43;p=matthieu%2Ffrr.git

sockunion: add hash function

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
---

diff --git a/lib/sockunion.c b/lib/sockunion.c
index 59c5ba5dd0..b404cb78f4 100644
--- a/lib/sockunion.c
+++ b/lib/sockunion.c
@@ -27,6 +27,7 @@
 #include "memory.h"
 #include "str.h"
 #include "log.h"
+#include "jhash.h"
 
 #ifndef HAVE_INET_ATON
 int
@@ -603,6 +604,21 @@ sockunion_same (const union sockunion *su1, const union sockunion *su2)
     return 0;
 }
 
+unsigned int
+sockunion_hash (const union sockunion *su)
+{
+  switch (sockunion_family(su))
+    {
+    case AF_INET:
+      return jhash_1word(su->sin.sin_addr.s_addr, 0);
+#ifdef HAVE_IPV6
+    case AF_INET6:
+      return jhash2(su->sin6.sin6_addr.s6_addr32, ZEBRA_NUM_OF(su->sin6.sin6_addr.s6_addr32), 0);
+#endif /* HAVE_IPV6 */
+    }
+  return 0;
+}
+
 /* After TCP connection is established.  Get local address and port. */
 union sockunion *
 sockunion_getsockname (int fd)
diff --git a/lib/sockunion.h b/lib/sockunion.h
index 78356e4cb7..e66b0b8e83 100644
--- a/lib/sockunion.h
+++ b/lib/sockunion.h
@@ -89,6 +89,7 @@ extern int str2sockunion (const char *, union sockunion *);
 extern const char *sockunion2str (union sockunion *, char *, size_t);
 extern int sockunion_cmp (union sockunion *, union sockunion *);
 extern int sockunion_same (const union sockunion *, const union sockunion *);
+extern unsigned int sockunion_hash (const union sockunion *);
 
 extern union sockunion *sockunion_str2su (const char *str);
 extern int sockunion_accept (int sock, union sockunion *);