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

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By modyfing genlmsg_put() to take a genl_family and by adding
genlmsg_put_reply() the process of constructing the netlink
and generic netlink headers is simplified.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf
2006-11-14 19:46:02 -08:00
committed by David S. Miller
parent 81878d27fd
commit 17c157c889
7 changed files with 51 additions and 95 deletions
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31
include/net/genetlink.h
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@@ -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