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Commit a46621a3 authored by Denys Vlasenko's avatar Denys Vlasenko Committed by David S. Miller
Browse files

net: Deinline __nlmsg_put and genlmsg_put. -7k code on i386 defconfig. 



   text	   data	    bss	    dec	    hex	filename
8455963	 532732	1810804	10799499 a4c98b	vmlinux.o.before
8448899	 532732	1810804	10792435 a4adf3	vmlinux.o

This change also removes commented-out copy of __nlmsg_put
which was last touched in 2005 with "Enable once all users
have been converted" comment on top.

Changes in v2: rediffed against net-next.

Signed-off-by: default avatarDenys Vlasenko <vda.linux@googlemail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5de658f8

include/linux/netlink.h

+2 −16
Original line number Diff line number Diff line
@@ -237,22 +237,8 @@ struct netlink_notify { 
	int protocol;

};



static __inline__ struct nlmsghdr *

__nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags)

{

	struct nlmsghdr *nlh;

	int size = NLMSG_LENGTH(len);



	nlh = (struct nlmsghdr*)skb_put(skb, NLMSG_ALIGN(size));

	nlh->nlmsg_type = type;

	nlh->nlmsg_len = size;

	nlh->nlmsg_flags = flags;

	nlh->nlmsg_pid = pid;

	nlh->nlmsg_seq = seq;

	if (!__builtin_constant_p(size) || NLMSG_ALIGN(size) - size != 0)

		memset(NLMSG_DATA(nlh) + len, 0, NLMSG_ALIGN(size) - size);

	return nlh;

}

struct nlmsghdr *

__nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags);



#define NLMSG_NEW(skb, pid, seq, type, len, flags) \

({	if (unlikely(skb_tailroom(skb) < (int)NLMSG_SPACE(len))) \

include/net/genetlink.h

+2 −29
Original line number Diff line number Diff line
@@ -131,35 +131,8 @@ extern void genl_unregister_mc_group(struct genl_family *family, 
extern void genl_notify(struct sk_buff *skb, struct net *net, u32 pid,

			u32 group, struct nlmsghdr *nlh, gfp_t flags);



/**

 * genlmsg_put - Add generic netlink header to netlink message

 * @skb: socket buffer holding the message

 * @pid: netlink pid the message is addressed to

 * @seq: sequence number (usually the one of the sender)

 * @family: generic netlink family

 * @flags netlink message flags

 * @cmd: generic netlink command

 *

 * Returns pointer to user specific header

 */

static inline void *genlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,

				struct genl_family *family, int flags, u8 cmd)

{

	struct nlmsghdr *nlh;

	struct genlmsghdr *hdr;



	nlh = nlmsg_put(skb, pid, seq, family->id, GENL_HDRLEN +

			family->hdrsize, flags);

	if (nlh == NULL)

		return NULL;



	hdr = nlmsg_data(nlh);

	hdr->cmd = cmd;

	hdr->version = family->version;

	hdr->reserved = 0;



	return (char *) hdr + GENL_HDRLEN;

}

void *genlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,

				struct genl_family *family, int flags, u8 cmd);



/**

 * genlmsg_nlhdr - Obtain netlink header from user specified header

include/net/netlink.h

+0 −35
Original line number Diff line number Diff line
@@ -441,41 +441,6 @@ static inline int nlmsg_report(const struct nlmsghdr *nlh) 
	nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \

			  nlmsg_attrlen(nlh, hdrlen), rem)



#if 0

/* FIXME: Enable once all users have been converted */



/**

 * __nlmsg_put - Add a new netlink message to an skb

 * @skb: socket buffer to store message in

 * @pid: netlink process id

 * @seq: sequence number of message

 * @type: message type

 * @payload: length of message payload

 * @flags: message flags

 *

 * The caller is responsible to ensure that the skb provides enough

 * tailroom for both the netlink header and payload.

 */

static inline struct nlmsghdr *__nlmsg_put(struct sk_buff *skb, u32 pid,

					   u32 seq, int type, int payload,

					   int flags)

{

	struct nlmsghdr *nlh;



	nlh = (struct nlmsghdr *) skb_put(skb, nlmsg_total_size(payload));

	nlh->nlmsg_type = type;

	nlh->nlmsg_len = nlmsg_msg_size(payload);

	nlh->nlmsg_flags = flags;

	nlh->nlmsg_pid = pid;

	nlh->nlmsg_seq = seq;



	memset((unsigned char *) nlmsg_data(nlh) + payload, 0,

	       nlmsg_padlen(payload));



	return nlh;

}

#endif



/**

 * nlmsg_put - Add a new netlink message to an skb

 * @skb: socket buffer to store message in

net/netlink/af_netlink.c

+18 −0
Original line number Diff line number Diff line
@@ -1645,6 +1645,24 @@ static void netlink_destroy_callback(struct netlink_callback *cb) 
	kfree(cb);

}



struct nlmsghdr *

__nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags)

{

	struct nlmsghdr *nlh;

	int size = NLMSG_LENGTH(len);



	nlh = (struct nlmsghdr*)skb_put(skb, NLMSG_ALIGN(size));

	nlh->nlmsg_type = type;

	nlh->nlmsg_len = size;

	nlh->nlmsg_flags = flags;

	nlh->nlmsg_pid = pid;

	nlh->nlmsg_seq = seq;

	if (!__builtin_constant_p(size) || NLMSG_ALIGN(size) - size != 0)

		memset(NLMSG_DATA(nlh) + len, 0, NLMSG_ALIGN(size) - size);

	return nlh;

}

EXPORT_SYMBOL(__nlmsg_put);



/*

 * It looks a bit ugly.

 * It would be better to create kernel thread.

net/netlink/genetlink.c

+31 −0
Original line number Diff line number Diff line
@@ -498,6 +498,37 @@ int genl_unregister_family(struct genl_family *family) 
}

EXPORT_SYMBOL(genl_unregister_family);



/**

 * genlmsg_put - Add generic netlink header to netlink message

 * @skb: socket buffer holding the message

 * @pid: netlink pid the message is addressed to

 * @seq: sequence number (usually the one of the sender)

 * @family: generic netlink family

 * @flags netlink message flags

 * @cmd: generic netlink command

 *

 * Returns pointer to user specific header

 */

void *genlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,

				struct genl_family *family, int flags, u8 cmd)

{

	struct nlmsghdr *nlh;

	struct genlmsghdr *hdr;



	nlh = nlmsg_put(skb, pid, seq, family->id, GENL_HDRLEN +

			family->hdrsize, flags);

	if (nlh == NULL)

		return NULL;



	hdr = nlmsg_data(nlh);

	hdr->cmd = cmd;

	hdr->version = family->version;

	hdr->reserved = 0;



	return (char *) hdr + GENL_HDRLEN;

}

EXPORT_SYMBOL(genlmsg_put);



static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)

{

	struct genl_ops *ops;