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    Subject[Patch 8/9] generic netlink utility functions
    From
    Date
    genetlink-utils.patch

    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>

    include/net/genetlink.h | 20 ++++++++++++++++++++
    1 files changed, 20 insertions(+)

    Index: linux-2.6.16-rc5/include/net/genetlink.h
    ===================================================================
    --- linux-2.6.16-rc5.orig/include/net/genetlink.h 2006-03-11 07:41:32.000000000 -0500
    +++ linux-2.6.16-rc5/include/net/genetlink.h 2006-03-11 07:41:41.000000000 -0500
    @@ -150,4 +150,24 @@ static inline int genlmsg_unicast(struct
    return nlmsg_unicast(genl_sock, skb, pid);
    }

    +/**
    + * gennlmsg_data - head of message payload
    + * @gnlh: genetlink messsage header
    + */
    +static inline void *genlmsg_data(const struct genlmsghdr *gnlh)
    +{
    + return ((unsigned char *) gnlh + GENL_HDRLEN);
    +}
    +
    +/**
    + * genlmsg_len - length of message payload
    + * @gnlh: genetlink message header
    + */
    +static inline int genlmsg_len(const struct genlmsghdr *gnlh)
    +{
    + struct nlmsghdr *nlh = (struct nlmsghdr *)((unsigned char *)gnlh -
    + NLMSG_HDRLEN);
    + return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN);
    +}
    +
    #endif /* __NET_GENERIC_NETLINK_H */

    -
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