[GENL]: Add genlmsg_put_reply() to simplify building reply headers

[net-next-2.6.git] / include / net / genetlink.h

diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 797c18b5041fdf060ae9d160c11c33aac8bb2100..7fd131c9a8ccee66ab22ca8f6838784fc72a13fd 100644 (file)
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -79,33 +79,50 @@ extern struct sock *genl_sock;
  * @skb: socket buffer holding the message
  * @pid: netlink pid the message is addressed to
  * @seq: sequence number (usually the one of the sender)
- * @type: netlink message type
- * @hdrlen: length of the user specific header
+ * @family: generic netlink family
  * @flags netlink message flags
  * @cmd: generic netlink command
- * @version: version
  *
  * Returns pointer to user specific header
  */
 static inline void *genlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,
-                               int type, int hdrlen, int flags,
-                               u8 cmd, u8 version)
+                               struct genl_family *family, int flags, u8 cmd)
 {
        struct nlmsghdr *nlh;
        struct genlmsghdr *hdr;
 
-       nlh = nlmsg_put(skb, pid, seq, type, GENL_HDRLEN + hdrlen, flags);
+       nlh = nlmsg_put(skb, pid, seq, family->id, GENL_HDRLEN +
+                       family->hdrsize, flags);
        if (nlh == NULL)
                return NULL;
 
        hdr = nlmsg_data(nlh);
        hdr->cmd = cmd;
-       hdr->version = version;
+       hdr->version = family->version;
        hdr->reserved = 0;
 
        return (char *) hdr + GENL_HDRLEN;
 }
 
+/**
+ * genlmsg_put_reply - Add generic netlink header to a reply message
+ * @skb: socket buffer holding the message
+ * @info: receiver info
+ * @family: generic netlink family
+ * @flags: netlink message flags
+ * @cmd: generic netlink command
+ *
+ * Returns pointer to user specific header
+ */
+static inline void *genlmsg_put_reply(struct sk_buff *skb,
+                                     struct genl_info *info,
+                                     struct genl_family *family,
+                                     int flags, u8 cmd)
+{
+       return genlmsg_put(skb, info->snd_pid, info->snd_seq, family,
+                          flags, cmd);
+}
+
 /**
  * genlmsg_end - Finalize a generic netlink message
  * @skb: socket buffer the message is stored in