linux/net/ieee802154/ieee802154.h
Johannes Berg 3b0f31f2b8 genetlink: make policy common to family
Since maxattr is common, the policy can't really differ sanely,
so make it common as well.

The only user that did in fact manage to make a non-common policy
is taskstats, which has to be really careful about it (since it's
still using a common maxattr!). This is no longer supported, but
we can fake it using pre_doit.

This reduces the size of e.g. nl80211.o (which has lots of commands):

   text	   data	    bss	    dec	    hex	filename
 398745	  14323	   2240	 415308	  6564c	net/wireless/nl80211.o (before)
 397913	  14331	   2240	 414484	  65314	net/wireless/nl80211.o (after)
--------------------------------
   -832      +8       0    -824

Which is obviously just 8 bytes for each command, and an added 8
bytes for the new policy pointer. I'm not sure why the ops list is
counted as .text though.

Most of the code transformations were done using the following spatch:
    @ops@
    identifier OPS;
    expression POLICY;
    @@
    struct genl_ops OPS[] = {
    ...,
     {
    -	.policy = POLICY,
     },
    ...
    };

    @@
    identifier ops.OPS;
    expression ops.POLICY;
    identifier fam;
    expression M;
    @@
    struct genl_family fam = {
            .ops = OPS,
            .maxattr = M,
    +       .policy = POLICY,
            ...
    };

This also gets rid of devlink_nl_cmd_region_read_dumpit() accessing
the cb->data as ops, which we want to change in a later genl patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-22 10:38:23 -04:00

85 lines
3.3 KiB
C

/*
* Copyright (C) 2007, 2008, 2009 Siemens AG
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef IEEE_802154_LOCAL_H
#define IEEE_802154_LOCAL_H
int __init ieee802154_nl_init(void);
void ieee802154_nl_exit(void);
#define IEEE802154_OP(_cmd, _func) \
{ \
.cmd = _cmd, \
.doit = _func, \
.dumpit = NULL, \
.flags = GENL_ADMIN_PERM, \
}
#define IEEE802154_DUMP(_cmd, _func, _dump) \
{ \
.cmd = _cmd, \
.doit = _func, \
.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;
/* genetlink ops/groups */
int ieee802154_list_phy(struct sk_buff *skb, struct genl_info *info);
int ieee802154_dump_phy(struct sk_buff *skb, struct netlink_callback *cb);
int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info);
int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info);
enum ieee802154_mcgrp_ids {
IEEE802154_COORD_MCGRP,
IEEE802154_BEACON_MCGRP,
};
int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info);
int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info);
int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info);
int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info);
int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info);
int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info);
int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb);
int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_getparams(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_setparams(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_add_key(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_del_key(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_dump_keys(struct sk_buff *skb,
struct netlink_callback *cb);
int ieee802154_llsec_add_dev(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_del_dev(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_dump_devs(struct sk_buff *skb,
struct netlink_callback *cb);
int ieee802154_llsec_add_devkey(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_del_devkey(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_dump_devkeys(struct sk_buff *skb,
struct netlink_callback *cb);
int ieee802154_llsec_add_seclevel(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_del_seclevel(struct sk_buff *skb, struct genl_info *info);
int ieee802154_llsec_dump_seclevels(struct sk_buff *skb,
struct netlink_callback *cb);
#endif