kernel_optimize_test/net/openvswitch
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
..
actions.c net: openvswitch: Add a new action check_pkt_len 2019-03-27 13:53:23 -07:00
conntrack.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
conntrack.h
datapath.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
datapath.h
dp_notify.c
flow_netlink.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
flow_netlink.h openvswitch: convert to kvmalloc 2019-03-12 10:04:02 -07:00
flow_table.c openvswitch: convert to kvmalloc 2019-03-12 10:04:02 -07:00
flow_table.h openvswitch: convert to kvmalloc 2019-03-12 10:04:02 -07:00
flow.c openvswitch: Fix IPv6 later frags parsing 2019-01-04 13:00:02 -08:00
flow.h openvswitch: convert to kvmalloc 2019-03-12 10:04:02 -07:00
Kconfig netfilter: nat: merge nf_nat_ipv4,6 into nat core 2019-02-27 10:49:55 +01:00
Makefile
meter.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
meter.h
vport-geneve.c net: core: dev: Add extack argument to dev_change_flags() 2018-12-06 13:26:07 -08:00
vport-gre.c net: core: dev: Add extack argument to dev_change_flags() 2018-12-06 13:26:07 -08:00
vport-internal_dev.c net: ovs: fix return type of ndo_start_xmit function 2018-09-28 10:25:11 -07:00
vport-internal_dev.h
vport-netdev.c openvswitch: remove BUG_ON from get_dpdev 2018-11-08 17:14:59 -08:00
vport-netdev.h
vport-vxlan.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
vport.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
vport.h