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Diffstat (limited to 'net/netlink/genetlink.c')
-rw-r--r--net/netlink/genetlink.c40
1 files changed, 38 insertions, 2 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index c29d2568c9e0..9f40441d7a7d 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -498,6 +498,37 @@ int genl_unregister_family(struct genl_family *family)
}
EXPORT_SYMBOL(genl_unregister_family);
+/**
+ * genlmsg_put - Add generic netlink header to netlink message
+ * @skb: socket buffer holding the message
+ * @pid: netlink pid the message is addressed to
+ * @seq: sequence number (usually the one of the sender)
+ * @family: generic netlink family
+ * @flags netlink message flags
+ * @cmd: generic netlink command
+ *
+ * Returns pointer to user specific header
+ */
+void *genlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,
+ struct genl_family *family, int flags, u8 cmd)
+{
+ struct nlmsghdr *nlh;
+ struct genlmsghdr *hdr;
+
+ 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 = family->version;
+ hdr->reserved = 0;
+
+ return (char *) hdr + GENL_HDRLEN;
+}
+EXPORT_SYMBOL(genlmsg_put);
+
static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct genl_ops *ops;
@@ -532,8 +563,13 @@ static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
return -EOPNOTSUPP;
genl_unlock();
- err = netlink_dump_start(net->genl_sock, skb, nlh,
- ops->dumpit, ops->done, 0);
+ {
+ struct netlink_dump_control c = {
+ .dump = ops->dumpit,
+ .done = ops->done,
+ };
+ err = netlink_dump_start(net->genl_sock, skb, nlh, &c);
+ }
genl_lock();
return err;
}