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authorThomas Graf <tgraf@suug.ch>2006-08-17 18:14:52 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 14:55:04 -0700
commit4e902c57417c4c285b98ba2722468d1c3ed83d1b (patch)
tree83251829a4bc9628a3543e5f70e7b11090fe22d9 /include/net/nexthop.h
parentab32ea5d8a760e7dd4339634e95d7be24ee5b842 (diff)
downloadop-kernel-dev-4e902c57417c4c285b98ba2722468d1c3ed83d1b.zip
op-kernel-dev-4e902c57417c4c285b98ba2722468d1c3ed83d1b.tar.gz
[IPv4]: FIB configuration using struct fib_config
Introduces struct fib_config replacing the ugly struct kern_rta prone to ordering issues. Avoids creating faked netlink messages for auto generated routes or requests via ioctl. A new interface net/nexthop.h is added to help navigate through nexthop configuration arrays. A new struct nl_info will be used to carry the necessary netlink information to be used for notifications later on. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/nexthop.h')
-rw-r--r--include/net/nexthop.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/net/nexthop.h b/include/net/nexthop.h
new file mode 100644
index 0000000..3334dbf
--- /dev/null
+++ b/include/net/nexthop.h
@@ -0,0 +1,33 @@
+#ifndef __NET_NEXTHOP_H
+#define __NET_NEXTHOP_H
+
+#include <linux/rtnetlink.h>
+#include <net/netlink.h>
+
+static inline int rtnh_ok(const struct rtnexthop *rtnh, int remaining)
+{
+ return remaining >= sizeof(*rtnh) &&
+ rtnh->rtnh_len >= sizeof(*rtnh) &&
+ rtnh->rtnh_len <= remaining;
+}
+
+static inline struct rtnexthop *rtnh_next(const struct rtnexthop *rtnh,
+ int *remaining)
+{
+ int totlen = NLA_ALIGN(rtnh->rtnh_len);
+
+ *remaining -= totlen;
+ return (struct rtnexthop *) ((char *) rtnh + totlen);
+}
+
+static inline struct nlattr *rtnh_attrs(const struct rtnexthop *rtnh)
+{
+ return (struct nlattr *) ((char *) rtnh + NLA_ALIGN(sizeof(*rtnh)));
+}
+
+static inline int rtnh_attrlen(const struct rtnexthop *rtnh)
+{
+ return rtnh->rtnh_len - NLA_ALIGN(sizeof(*rtnh));
+}
+
+#endif
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