linux-stable/net/nfc
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
..
hci NFC: Fix possible memory corruption when handling SHDLC I-Frame commands 2018-09-18 19:55:01 -07:00
nci NFC: nci: Add some bounds checking in nci_hci_cmd_received() 2019-04-06 15:05:07 -07:00
af_nfc.c net: socket: mark socket protocol handler structs as const 2017-05-16 11:54:07 -04:00
core.c NFC: Convert timers to use timer_setup() 2017-11-06 01:12:10 +01:00
digital.h NFC: digital: Add 'tg_listen_md' and 'tg_get_rf_tech' driver hooks 2014-07-23 01:17:31 +02:00
digital_core.c NFC: digital: Abort cmd when deactivating target 2017-11-10 00:03:39 +01:00
digital_dep.c NFC: digital: NFC-DEP Target WT(nfcdep,max) is now 14 2017-06-23 00:19:59 +02:00
digital_technology.c NFC: digital: NFC-A SEL_RES must be one byte 2017-06-23 00:19:59 +02:00
Kconfig
llcp.h net: Pass kern from net_proto_family.create to sk_alloc 2015-05-11 10:50:17 -04:00
llcp_commands.c net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails 2019-02-27 12:47:08 -08:00
llcp_core.c net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails 2019-02-27 12:47:08 -08:00
llcp_sock.c nfc: Fix to check for kmemdup failure 2019-03-19 13:48:07 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netlink.c netlink: make nla_nest_start() add NLA_F_NESTED flag 2019-04-27 17:03:44 -04:00
nfc.h nfc: netlink: HCI event connectivity implementation 2015-12-29 19:06:20 +01:00
rawsock.c Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00