[RFC][PATCH -mm] Add genetlink utilities for payload length calculation
From: Balbir Singh <hidden>
Date: 2006-09-11 07:44:04
Also in:
lkml
Add two utility helper functions genlmsg_msg_size() and genlmsg_total_size(). These functions are derived from their netlink counterparts. Signed-off-by: Balbir Singh <redacted> --- include/net/genetlink.h | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+) diff -puN include/net/genetlink.h~genetlink-payload-size-helpers include/net/genetlink.h
--- linux-2.6.18-rc6/include/net/genetlink.h~genetlink-payload-size-helpers 2006-09-11 10:34:56.000000000 +0530
+++ linux-2.6.18-rc6-balbir/include/net/genetlink.h 2006-09-11 11:42:37.000000000 +0530@@ -171,4 +171,22 @@ static inline int genlmsg_len(const stru 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 */
_ -- Balbir Singh, Linux Technology Center, IBM Software Labs