Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

[linux-2.6-omap-h63xx.git] / include / linux / netlink.h

diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index ba25ca874c20c1d646abf1d95c0e19da2fcc0f96..6a2ccf78a3564025947dc5f06236155d67351677 100644 (file)
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -71,7 +71,8 @@ struct nlmsghdr
 
 #define NLMSG_ALIGNTO  4
 #define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
-#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(sizeof(struct nlmsghdr)))
+#define NLMSG_HDRLEN    ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
+#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN))
 #define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
 #define NLMSG_DATA(nlh)  ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
 #define NLMSG_NEXT(nlh,len)     ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
@@ -86,6 +87,8 @@ struct nlmsghdr
 #define NLMSG_DONE             0x3     /* End of a dump        */
 #define NLMSG_OVERRUN          0x4     /* Data lost            */
 
+#define NLMSG_MIN_TYPE         0x10    /* < 0x10: reserved control messages */
+
 struct nlmsgerr
 {
        int             error;
@@ -108,6 +111,25 @@ enum {
        NETLINK_CONNECTED,
 };
 
+/*
+ *  <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
+ * +---------------------+- - -+- - - - - - - - - -+- - -+
+ * |        Header       | Pad |     Payload       | Pad |
+ * |   (struct nlattr)   | ing |                   | ing |
+ * +---------------------+- - -+- - - - - - - - - -+- - -+
+ *  <-------------- nlattr->nla_len -------------->
+ */
+
+struct nlattr
+{
+       __u16           nla_len;
+       __u16           nla_type;
+};
+
+#define NLA_ALIGNTO            4
+#define NLA_ALIGN(len)         (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
+#define NLA_HDRLEN             ((int) NLA_ALIGN(sizeof(struct nlattr)))
+
 #ifdef __KERNEL__
 
 #include <linux/capability.h>