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Michal Kubecek ae0be8de9a netlink: make nla_nest_start() add NLA_F_NESTED flag 
Even if the NLA_F_NESTED flag was introduced more than 11 years ago, most
netlink based interfaces (including recently added ones) are still not
setting it in kernel generated messages. Without the flag, message parsers
not aware of attribute semantics (e.g. wireshark dissector or libmnl's
mnl_nlmsg_fprintf()) cannot recognize nested attributes and won't display
the structure of their contents.

Unfortunately we cannot just add the flag everywhere as there may be
userspace applications which check nlattr::nla_type directly rather than
through a helper masking out the flags. Therefore the patch renames
nla_nest_start() to nla_nest_start_noflag() and introduces nla_nest_start()
as a wrapper adding NLA_F_NESTED. The calls which add NLA_F_NESTED manually
are rewritten to use nla_nest_start().

Except for changes in include/net/netlink.h, the patch was generated using
this semantic patch:

@@ expression E1, E2; @@
-nla_nest_start(E1, E2)
+nla_nest_start_noflag(E1, E2)

@@ expression E1, E2; @@
-nla_nest_start_noflag(E1, E2 | NLA_F_NESTED)
+nla_nest_start(E1, E2)

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2019-04-27 17:03:44 -04:00
..
Kconfig net: sched: Kconfig: update reference link for PIE 2019-03-26 11:17:09 -07:00
Makefile tc: Add support for configuring the taprio scheduler 2018-10-04 13:52:23 -07:00
act_api.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
act_bpf.c net/sched: act_bpf: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_connmark.c net/sched: act_connmark: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_csum.c net/sched: act_csum: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_gact.c net/sched: act_gact: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_ife.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
act_ipt.c net/sched: prepare TC actions to properly validate the control action 2019-03-21 13:26:41 -07:00
act_meta_mark.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_meta_skbprio.c net sched actions: change IFE modules alias names 2017-10-12 22:13:20 -07:00
act_meta_skbtcindex.c net: remove duplicate includes 2017-12-13 13:18:46 -05:00
act_mirred.c net: sched: fix cleanup NULL pointer exception in act_mirr 2019-03-23 21:36:04 -04:00
act_nat.c net/sched: act_nat: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_pedit.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
act_police.c net/sched: act_police: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_sample.c net/sched: act_sample: fix divide by zero in the traffic path 2019-04-04 10:46:33 -07:00
act_simple.c net/sched: act_simple: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_skbedit.c net/sched: act_skbedit: validate the control action inside init() 2019-03-21 13:26:41 -07:00
act_skbmod.c net/sched: act_skbmod: validate the control action inside init() 2019-03-21 13:26:42 -07:00
act_tunnel_key.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
act_vlan.c net/sched: act_vlan: validate the control action inside init() 2019-03-21 13:26:42 -07:00
cls_api.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_basic.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_bpf.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_cgroup.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_flow.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_flower.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_fw.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_matchall.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_route.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_rsvp.c
…
cls_rsvp.h netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_rsvp6.c
…
cls_tcindex.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
cls_u32.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
em_canid.c net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
em_cmp.c
…
em_ipset.c netfilter: x_tables: move hook state into xt_action_param structure 2016-11-03 10:56:21 +01:00
em_ipt.c net: sched: add em_ipt ematch for calling xtables matches 2018-02-21 13:15:33 -05:00
em_meta.c net: convert sock.sk_refcnt from atomic_t to refcount_t 2017-07-01 07:39:08 -07:00
em_nbyte.c net: sched: em_nbyte: don't add the data offset twice 2018-01-24 14:52:40 -05:00
em_text.c net: Remove state argument from skb_find_text() 2015-02-22 15:59:54 -05:00
em_u32.c
…
ematch.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_api.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_atm.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_blackhole.c net_sched: blackhole: tell upper qdisc about dropped packets 2018-06-17 08:42:33 +09:00
sch_cake.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_cbq.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_cbs.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_choke.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_codel.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_drr.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_dsmark.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_etf.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_fifo.c net: sched: rename qdisc_destroy() to qdisc_put() 2018-09-25 20:17:35 -07:00
sch_fq.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_fq_codel.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_generic.c Revert: "net: sched: put back q.qlen into a single location" 2019-04-10 12:20:46 -07:00
sch_gred.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_hfsc.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_hhf.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_htb.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_ingress.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_mq.c net: sched: introduce and use qstats read helpers 2019-04-01 14:50:13 -07:00
sch_mqprio.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_multiq.c net: sched: introduce and use qdisc tree flush/purge helpers 2019-04-01 14:50:13 -07:00
sch_netem.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_pie.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_plug.c net: sched: sch: add extack for change qdisc ops 2017-12-21 12:32:50 -05:00
sch_prio.c net: sched: introduce and use qdisc tree flush/purge helpers 2019-04-01 14:50:13 -07:00
sch_qfq.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_red.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_sfb.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_sfq.c net: sch: api: add extack support in tcf_block_get 2017-12-21 12:32:51 -05:00
sch_skbprio.c net/sched: add skbprio scheduler 2018-07-24 14:44:00 -07:00
sch_taprio.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_tbf.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
sch_teql.c net: sched: sch: add extack for init callback 2017-12-21 12:32:50 -05:00