Commit 339b4ca5 authored by Dmitry Eremin-Solenikov's avatar Dmitry Eremin-Solenikov
Browse files

ieee802154: add two nl802154 helpers 



Add two nl802154 helpers: one for starting a reply message, one for sending.

Signed-off-by: default avatarDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
parent 405cd39f

net/ieee802154/ieee802154.h

+5 −0
Original line number Diff line number Diff line
@@ -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);

net/ieee802154/netlink.c

+33 −0
Original line number Diff line number Diff line
@@ -75,6 +75,39 @@ int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group) 
	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;