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Commit 17db952c authored by Balbir Singh's avatar Balbir Singh Committed by Linus Torvalds
Browse files

[PATCH] Add genetlink utilities for payload length calculation 



Add two utility helper functions genlmsg_msg_size() and genlmsg_total_size().
These functions are derived from their netlink counterparts.

Signed-off-by: default avatarBalbir Singh <balbir@in.ibm.com>
Cc: Jamal Hadi <hadi@cyberus.ca>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jay Lan <jlan@engr.sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 31608214

include/net/genetlink.h

+18 −0
Original line number Diff line number Diff line
@@ -169,4 +169,22 @@ static inline int genlmsg_len(const struct genlmsghdr *gnlh) 
	return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN);

}



/**

 * genlmsg_msg_size - length of genetlink message not including padding

 * @payload: length of message payload

 */

static inline int genlmsg_msg_size(int payload)

{

	return GENL_HDRLEN + payload;

}



/**

 * genlmsg_total_size - length of genetlink message including padding

 * @payload: length of message payload

 */

static inline int genlmsg_total_size(int payload)

{

	return NLMSG_ALIGN(genlmsg_msg_size(payload));

}



#endif	/* __NET_GENERIC_NETLINK_H */