Doug / smarc-fsl-linux-kernel

Download as
Browse Code ยป

Commit fb0ba6bd021248b6bdc58a7b1213a55a6776a38a

Authored by Balbir Singh
Committed by Linus Torvalds
1 parent 52f17b6c2b
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

[PATCH] per-task-delay-accounting: utilities for genetlink usage 

Two utilities for simplifying usage of NETLINK_GENERIC interface.

Signed-off-by: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Jes Sorensen <jes@sgi.com>
Cc: Peter Chubb <peterc@gelato.unsw.edu.au>
Cc: Erich Focht <efocht@ess.nec.de>
Cc: Levent Serinol <lserinol@gmail.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Showing 1 changed file with 20 additions and 0 deletions Side-by-side Diff

include/net/genetlink.h
Diff comments   View file @ fb0ba6b
... ... @@ -150,5 +150,25 @@
150 150 return nlmsg_unicast(genl_sock, skb, pid);
151 151 }
152 152  
  153 +/**
  154 + * gennlmsg_data - head of message payload
  155 + * @gnlh: genetlink messsage header
  156 + */
  157 +static inline void *genlmsg_data(const struct genlmsghdr *gnlh)
  158 +{
  159 + return ((unsigned char *) gnlh + GENL_HDRLEN);
  160 +}
  161 +
  162 +/**
  163 + * genlmsg_len - length of message payload
  164 + * @gnlh: genetlink message header
  165 + */
  166 +static inline int genlmsg_len(const struct genlmsghdr *gnlh)
  167 +{
  168 + struct nlmsghdr *nlh = (struct nlmsghdr *)((unsigned char *)gnlh -
  169 + NLMSG_HDRLEN);
  170 + return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN);
  171 +}
  172 +
153 173 #endif /* __NET_GENERIC_NETLINK_H */