From 339b4ca5f68c7fd02eae54e9ce49c4b5f5d8b545 Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Wed, 4 Nov 2009 18:05:38 +0300 Subject: ieee802154: add two nl802154 helpers Add two nl802154 helpers: one for starting a reply message, one for sending. Signed-off-by: Dmitry Eremin-Solenikov --- net/ieee802154/ieee802154.h | 5 +++++ net/ieee802154/netlink.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) (limited to 'net/ieee802154') diff --git a/net/ieee802154/ieee802154.h b/net/ieee802154/ieee802154.h index 0790eb06d68..aadec428e6e 100644 --- a/net/ieee802154/ieee802154.h +++ b/net/ieee802154/ieee802154.h @@ -38,8 +38,13 @@ void __exit ieee802154_nl_exit(void); .dumpit = _dump, \ } +struct genl_info; + struct sk_buff *ieee802154_nl_create(int flags, u8 req); int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group); +struct sk_buff *ieee802154_nl_new_reply(struct genl_info *info, + int flags, u8 req); +int ieee802154_nl_reply(struct sk_buff *msg, struct genl_info *info); extern struct genl_family nl802154_family; int nl802154_mac_register(void); diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c index 8a221737f75..33137b99e47 100644 --- a/net/ieee802154/netlink.c +++ b/net/ieee802154/netlink.c @@ -75,6 +75,39 @@ out: return -ENOBUFS; } +struct sk_buff *ieee802154_nl_new_reply(struct genl_info *info, + int flags, u8 req) +{ + void *hdr; + struct sk_buff *msg = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC); + + if (!msg) + return NULL; + + hdr = genlmsg_put_reply(msg, info, + &nl802154_family, flags, req); + if (!hdr) { + nlmsg_free(msg); + return NULL; + } + + return msg; +} + +int ieee802154_nl_reply(struct sk_buff *msg, struct genl_info *info) +{ + /* XXX: nlh is right at the start of msg */ + void *hdr = genlmsg_data(NLMSG_DATA(msg->data)); + + if (genlmsg_end(msg, hdr) < 0) + goto out; + + return genlmsg_reply(msg, info); +out: + nlmsg_free(msg); + return -ENOBUFS; +} + int __init ieee802154_nl_init(void) { int rc; -- cgit v1.2.3