* [PATCH net-next 1/3] ipv6: introdcue __ipv6_addr_needs_scope_id and ipv6_iface_scope_id helper functions
@ 2013-02-12 22:16 Hannes Frederic Sowa
0 siblings, 0 replies; only message in thread
From: Hannes Frederic Sowa @ 2013-02-12 22:16 UTC (permalink / raw)
To: netdev; +Cc: yoshfuji
Suggested-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
---
include/net/ipv6.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 851d541..8188d27 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -319,6 +319,18 @@ static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
}
+static inline bool __ipv6_addr_needs_scope_id(int type)
+{
+ return type & IPV6_ADDR_LINKLOCAL ||
+ (type & IPV6_ADDR_MULTICAST &&
+ __ipv6_addr_src_scope(type) <= IPV6_ADDR_SCOPE_LINKLOCAL);
+}
+
+static inline __u32 ipv6_iface_scope_id(const struct in6_addr *addr, int iface)
+{
+ return __ipv6_addr_needs_scope_id(__ipv6_addr_type(addr)) ? iface : 0;
+}
+
static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
{
return memcmp(a1, a2, sizeof(struct in6_addr));
--
1.8.1.2
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2013-02-12 22:16 [PATCH net-next 1/3] ipv6: introdcue __ipv6_addr_needs_scope_id and ipv6_iface_scope_id helper functions Hannes Frederic Sowa
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