[IPV4]: Kill fib4_rules_clean().

[mv-sheeva.git] / include / net / netlink.h

diff --git a/include/net/netlink.h b/include/net/netlink.h
index c99e22db96325b8f6be70b0b954fd92c207f18df..3a5e40b1e045030896a837942bd1645c5f9decd7 100644 (file)
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -35,6 +35,8 @@
  *   nlmsg_put()                       add a netlink message to an skb
  *   nlmsg_put_answer()                        callback based nlmsg_put()
  *   nlmsg_end()                       finanlize netlink message
+ *   nlmsg_get_pos()                   return current position in message
+ *   nlmsg_trim()                      trim part of message
  *   nlmsg_cancel()                    cancel message construction
  *   nlmsg_free()                      free a netlink message
  *
@@ -80,8 +82,10 @@
  *   struct nlattr                     netlink attribtue header
  *
  * Attribute Construction:
- *   nla_reserve(skb, type, len)       reserve skb tailroom for an attribute
+ *   nla_reserve(skb, type, len)       reserve room for an attribute
+ *   nla_reserve_nohdr(skb, len)       reserve room for an attribute w/o hdr
  *   nla_put(skb, type, len, data)     add attribute to skb
+ *   nla_put_nohdr(skb, len, data)     add attribute w/o hdr
  *
  * Attribute Construction for Basic Types:
  *   nla_put_u8(skb, type, value)      add u8 attribute to skb
@@ -139,6 +143,7 @@
  *   nla_next(nla, remaining)          get next netlink attribute
  *   nla_validate()                    validate a stream of attributes
  *   nla_find()                                find attribute in stream of attributes
+ *   nla_find_nested()                 find attribute in nested attributes
  *   nla_parse()                       parse and validate stream of attrs
  *   nla_parse_nested()                        parse nested attribuets
  *   nla_for_each_attr()               loop over all attributes
@@ -183,6 +188,12 @@ struct nla_policy {
        u16             minlen;
 };
 
+extern void            netlink_run_queue(struct sock *sk, unsigned int *qlen,
+                                         int (*cb)(struct sk_buff *,
+                                                   struct nlmsghdr *, int *));
+extern void            netlink_queue_skip(struct nlmsghdr *nlh,
+                                          struct sk_buff *skb);
+
 extern int             nla_validate(struct nlattr *head, int len, int maxtype,
                                     struct nla_policy *policy);
 extern int             nla_parse(struct nlattr *tb[], int maxtype,
@@ -197,12 +208,18 @@ extern int                nla_memcmp(const struct nlattr *nla, const void *data,
 extern int             nla_strcmp(const struct nlattr *nla, const char *str);
 extern struct nlattr * __nla_reserve(struct sk_buff *skb, int attrtype,
                                      int attrlen);
+extern void *          __nla_reserve_nohdr(struct sk_buff *skb, int attrlen);
 extern struct nlattr * nla_reserve(struct sk_buff *skb, int attrtype,
                                    int attrlen);
+extern void *          nla_reserve_nohdr(struct sk_buff *skb, int attrlen);
 extern void            __nla_put(struct sk_buff *skb, int attrtype,
                                  int attrlen, const void *data);
+extern void            __nla_put_nohdr(struct sk_buff *skb, int attrlen,
+                                       const void *data);
 extern int             nla_put(struct sk_buff *skb, int attrtype,
                                int attrlen, const void *data);
+extern int             nla_put_nohdr(struct sk_buff *skb, int attrlen,
+                                     const void *data);
 
 /**************************************************************************
  * Netlink Messages
@@ -447,12 +464,13 @@ static inline struct nlmsghdr *nlmsg_put_answer(struct sk_buff *skb,
 /**
  * nlmsg_new - Allocate a new netlink message
  * @size: maximum size of message
+ * @flags: the type of memory to allocate.
  *
  * Use NLMSG_GOODSIZE if size isn't know and you need a good default size.
  */
-static inline struct sk_buff *nlmsg_new(int size)
+static inline struct sk_buff *nlmsg_new(int size, gfp_t flags)
 {
-       return alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
+       return alloc_skb(size, flags);
 }
 
 /**
@@ -473,6 +491,32 @@ static inline int nlmsg_end(struct sk_buff *skb, struct nlmsghdr *nlh)
        return skb->len;
 }
 
+/**
+ * nlmsg_get_pos - return current position in netlink message
+ * @skb: socket buffer the message is stored in
+ *
+ * Returns a pointer to the current tail of the message.
+ */
+static inline void *nlmsg_get_pos(struct sk_buff *skb)
+{
+       return skb->tail;
+}
+
+/**
+ * nlmsg_trim - Trim message to a mark
+ * @skb: socket buffer the message is stored in
+ * @mark: mark to trim to
+ *
+ * Trims the message to the provided mark. Returns -1.
+ */
+static inline int nlmsg_trim(struct sk_buff *skb, void *mark)
+{
+       if (mark)
+               skb_trim(skb, (unsigned char *) mark - skb->data);
+
+       return -1;
+}
+
 /**
  * nlmsg_cancel - Cancel construction of a netlink message
  * @skb: socket buffer the message is stored in
@@ -483,9 +527,7 @@ static inline int nlmsg_end(struct sk_buff *skb, struct nlmsghdr *nlh)
  */
 static inline int nlmsg_cancel(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
-       skb_trim(skb, (unsigned char *) nlh - skb->data);
-
-       return -1;
+       return nlmsg_trim(skb, nlh);
 }
 
 /**
@@ -624,6 +666,18 @@ static inline struct nlattr *nla_next(const struct nlattr *nla, int *remaining)
        return (struct nlattr *) ((char *) nla + totlen);
 }
 
+/**
+ * nla_find_nested - find attribute in a set of nested attributes
+ * @nla: attribute containing the nested attributes
+ * @attrtype: type of attribute to look for
+ *
+ * Returns the first attribute which matches the specified type.
+ */
+static inline struct nlattr *nla_find_nested(struct nlattr *nla, int attrtype)
+{
+       return nla_find(nla_data(nla), nla_len(nla), attrtype);
+}
+
 /**
  * nla_parse_nested - parse nested attributes
  * @tb: destination array with maxtype+1 elements
@@ -856,10 +910,7 @@ static inline int nla_nest_end(struct sk_buff *skb, struct nlattr *start)
  */
 static inline int nla_nest_cancel(struct sk_buff *skb, struct nlattr *start)
 {
-       if (start)
-               skb_trim(skb, (unsigned char *) start - skb->data);
-
-       return -1;
+       return nlmsg_trim(skb, start);
 }
 
 /**
@@ -874,4 +925,13 @@ static inline int nla_nest_cancel(struct sk_buff *skb, struct nlattr *start)
             nla_ok(pos, rem); \
             pos = nla_next(pos, &(rem)))
 
+/**
+ * nla_for_each_nested - iterate over nested attributes
+ * @pos: loop counter, set to current attribute
+ * @nla: attribute containing the nested attributes
+ * @rem: initialized to len, holds bytes currently remaining in stream
+ */
+#define nla_for_each_nested(pos, nla, rem) \
+       nla_for_each_attr(pos, nla_data(nla), nla_len(nla), rem)
+
 #endif