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Subject[PATCH v2] Deinline __nlmsg_put and genlmsg_put. -7k code on i386 defconfig.
Date
   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: Denys Vlasenko <vda.linux@googlemail.com>
---
include/linux/netlink.h | 18 ++----------------
include/net/genetlink.h | 31 ++-----------------------------
include/net/netlink.h | 35 -----------------------------------
net/netlink/af_netlink.c | 18 ++++++++++++++++++
net/netlink/genetlink.c | 31 +++++++++++++++++++++++++++++++
5 files changed, 53 insertions(+), 80 deletions(-)

diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 52e4895..a390e9d 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -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))) \
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 7db3299..ccb6888 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -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
diff --git a/include/net/netlink.h b/include/net/netlink.h
index cb1f350..f394fe5 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -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
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 629b061..4d751e3 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -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.
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index c29d256..a115471 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -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;
--
1.7.7.6


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