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3c23215ba8
linux/include/net
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Gustavo A. R. Silva 3c23215ba8 mac80211: Replace zero-length array with flexible-array 
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20200507185907.GA15102@embeddedor
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-05-27 10:02:04 +02:00
..
9p net/9p: remove unused p9_req_t aux field 2020-03-27 09:29:57 +00:00
bluetooth Bluetooth: Add hook for driver to prevent wake from suspend 2020-05-13 09:12:04 +02:00
caif treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
iucv net/af_iucv: clean up function prototypes 2020-05-19 12:50:14 -07:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-15 13:48:59 -07:00
netns nexthop: add support for notifiers 2020-05-22 14:00:38 -07:00
nfc NFC: Replace zero-length array with flexible-array member 2020-02-27 12:06:20 -08:00
phonet treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
sctp net: sctp: Replace zero-length array with flexible-array member 2020-02-29 21:52:19 -08:00
tc_act net: schedule: add action gate offloading 2020-05-01 16:08:19 -07:00
6lowpan.h 6lowpan: Replace zero-length array with flexible-array member 2020-02-28 14:51:30 +01:00
act_api.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
addrconf.h ipv6: Honor all IPv6 PIO Valid Lifetime values 2020-04-23 12:29:21 -07:00
af_ieee802154.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
af_rxrpc.h rxrpc: Fix the excessive initial retransmission timeout 2020-05-11 16:42:28 +01:00
af_unix.h unix: uses an atomic type for scm files accounting 2020-02-28 12:12:53 -08:00
af_vsock.h vsock: add local transport support in the vsock core 2019-12-11 15:01:23 -08:00
ah.h
arp.h net: avoid potential false sharing in neighbor related code 2019-11-06 16:14:48 -08:00
atmclip.h
ax25.h ax25: fix possible use-after-free 2019-01-23 11:18:00 -08:00
ax88796.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
bareudp.h net: Add netif_is_bareudp() API to identify bareudp devices 2020-05-22 16:46:16 -07:00
bond_3ad.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 90 2019-05-24 17:37:53 +02:00
bond_alb.h bonding/alb: Add helper functions to get the xmit slave 2020-05-01 12:15:37 -07:00
bond_options.h bonding: add an option to specify a delay between peer notifications 2019-07-04 12:30:48 -07:00
bonding.h Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux 2020-05-09 01:05:30 -07:00
bpf_sk_storage.h bpf: INET_DIAG support in bpf_sk_storage 2020-02-27 18:50:19 -08:00
busy_poll.h net: annotate lockless accesses to sk->sk_napi_id 2019-10-30 17:34:35 -07:00
calipso.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
cfg80211-wext.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cfg80211.h cfg80211: Replace zero-length array with flexible-array 2020-05-27 10:02:03 +02:00
cfg802154.h cfg802154: Replace zero-length array with flexible-array member 2020-02-29 14:39:08 +01:00
checksum.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cipso_ipv4.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
cls_cgroup.h bpf: Allow to retrieve cgroup v1 classid from v2 hooks 2020-03-27 19:40:38 -07:00
codel_impl.h
codel_qdisc.h
codel.h
compat.h get rid of compat_mc_setsockopt() 2020-05-20 20:31:32 -04:00
datalink.h
dcbevent.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
dcbnl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
devlink.h devlink: Allow setting of packet trap group parameters 2020-03-30 17:54:58 -07:00
dn_dev.h
dn_fib.h net: dn_fib: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
dn_neigh.h
dn_nsp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 24 2019-05-21 11:52:39 +02:00
dn_route.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 24 2019-05-21 11:52:39 +02:00
dn.h
drop_monitor.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-03-31 17:29:33 -07:00
dsa.h net: dsa: provide an option for drivers to always receive bridge VLANs 2020-05-12 13:08:07 -07:00
dsfield.h ipv6: Annotate bitwise IPv6 dsfield pointer cast 2019-12-16 16:09:44 -08:00
dst_cache.h
dst_metadata.h
dst_ops.h net/dst: use a smaller percpu_counter batch for dst entries accounting 2020-05-08 21:33:33 -07:00
dst.h Remove DST_HOST 2020-03-23 21:57:44 -07:00
erspan.h erspan: Add type I version 0 support. 2020-05-05 13:23:29 -07:00
esp.h ESP: Export esp_output_fill_trailer function 2020-02-19 13:52:32 +01:00
espintcp.h xfrm: add espintcp (RFC 8229) 2019-12-09 09:59:07 +01:00
ethoc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
failover.h
fib_notifier.h ipv6: Remove old route notifications and convert listeners 2019-12-24 22:37:30 -08:00
fib_rules.h fib: add missing attribute validation for tun_id 2020-03-03 13:28:48 -08:00
firewire.h
flow_dissector.h flow_dissector: Parse multiple MPLS Label Stack Entries 2020-05-26 15:22:58 -07:00
flow_offload.h net: flow_offload: simplify hw stats check handling 2020-05-22 15:52:08 -07:00
flow.h route: Add multipath_hash in flowi_common to make user-define hash 2019-02-27 12:50:17 -08:00
fou.h
fq_impl.h net/fq_impl: Switch to kvmalloc() for memory allocation 2019-11-08 09:11:49 +01:00
fq.h net/flow_dissector: switch to siphash 2019-10-23 20:13:22 -07:00
garp.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
gen_stats.h net_sched: extend packet counter to 64bit 2019-11-05 18:20:55 -08:00
genetlink.h net: genetlink: remove unused genl_family_attrbuf() 2019-10-06 15:44:47 +02:00
geneve.h net: Move the definition of the default Geneve udp port to public header file 2019-03-22 12:09:31 -07:00
gre.h net: Add netif_is_gretap()/netif_is_ip6gretap() 2018-12-10 15:53:04 -08:00
gro_cells.h
gtp.h
gue.h net:gue.h:Fix shifting signed 32-bit value by 31 bits problem 2019-07-01 10:58:23 -07:00
hwbm.h net: hwbm: if CONFIG_NET_HWBM unset, make stub functions static 2019-10-25 16:24:32 -07:00
icmp.h icmp: introduce helper for nat'd source address in network device context 2020-02-13 14:19:00 -08:00
ieee80211_radiotap.h wireless-drivers-next patches for 5.1 2019-02-22 12:56:24 -08:00
ieee802154_netdev.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
if_inet6.h ipv6: Replace zero-length array with flexible-array 2020-05-11 13:18:54 -07:00
ife.h net: ife: drop include of module.h from net/ife.h 2019-04-22 21:50:53 -07:00
ila.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
inet6_connection_sock.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
inet6_hashtables.h net: Track socket refcounts in skb_steal_sock() 2020-03-30 13:45:04 -07:00
inet_common.h bpf: Allow any port in bpf_bind helper 2020-05-09 00:48:20 +02:00
inet_connection_sock.h inet_connection_sock: factor out destroy helper. 2020-05-15 12:30:13 -07:00
inet_ecn.h tunnel: Propagate ECT(1) when decapsulating as recommended by RFC6040 2020-04-30 20:32:15 -07:00
inet_frag.h inet: frags: re-introduce skb coalescing for local delivery 2019-08-08 15:55:10 -07:00
inet_hashtables.h net: Track socket refcounts in skb_steal_sock() 2020-03-30 13:45:04 -07:00
inet_sock.h net: inet_sock: Replace zero-length array with flexible-array member 2020-03-02 11:16:28 -08:00
inet_timewait_sock.h tcp: honor SO_PRIORITY in TIME_WAIT state 2019-09-27 12:05:02 +02:00
inetpeer.h net: ipv4: use a dedicated counter for icmp_v4 redirect packets 2019-02-08 21:50:15 -08:00
ip6_checksum.h net: core: add helper tcp_v6_gso_csum_prep 2020-02-19 11:20:59 -08:00
ip6_fib.h nexthop: support for fdb ecmp nexthops 2020-05-22 14:00:38 -07:00
ip6_route.h ipv6: lift copy_from_user out of ipv6_route_ioctl 2020-05-18 17:35:02 -07:00
ip6_tunnel.h ip6_tunnel: allow not to count pkts on tstats by passing dev as NULL 2019-06-18 20:48:45 -04:00
ip_fib.h net: don't return invalid table id error when we fall back to PF_UNSPEC 2020-05-21 17:25:50 -07:00
ip_tunnels.h net: add a new ndo_tunnel_ioctl method 2020-05-19 15:45:11 -07:00
ip_vs.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-11-02 13:54:56 -07:00
ip.h inet: protect against too small mtu values. 2019-12-07 11:55:11 -08:00
ipcomp.h
ipconfig.h
ipv6_frag.h inet: fix various use-after-free in defrags units 2019-06-19 11:37:47 -04:00
ipv6_stubs.h net: Refactor arguments of inet{,6}_bind 2020-05-09 00:48:20 +02:00
ipv6.h ip6_mc_msfilter(): pass the address list separately 2020-05-20 20:31:29 -04:00
ipx.h bonding/alb: properly access headers in bond_alb_xmit() 2020-02-05 14:28:09 +01:00
iw_handler.h
kcm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
l3mdev.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
lag.h
lapb.h
lib80211.h
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h llc: fix sk_buff leak in llc_conn_service() 2019-10-08 13:23:05 -07:00
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
llc.h
lwtunnel.h net: add net available in build_state 2020-03-29 22:30:57 -07:00
mac80211.h mac80211: Replace zero-length array with flexible-array 2020-05-27 10:02:04 +02:00
mac802154.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
macsec.h net: macsec: add support for getting offloaded stats 2020-03-26 20:17:36 -07:00
mip6.h net: mip6: Replace zero-length array with flexible-array member 2020-03-02 11:16:27 -08:00
mld.h net: ipv6: mld: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
mpls_iptunnel.h net: mpls: Replace zero-length array with flexible-array member 2020-02-28 12:08:37 -08:00
mpls.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
mptcp.h mptcp: Use 32-bit DATA_ACK when possible 2020-05-16 13:51:10 -07:00
mrp.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
ncsi.h
ndisc.h ipv6: ndisc: RFC-ietf-6man-ra-pref64-09 is now published as RFC8781 2020-04-22 12:15:07 -07:00
neighbour.h neighbour: Replace zero-length array with flexible-array member 2020-02-29 21:52:20 -08:00
net_failover.h
net_namespace.h ipv6: Use global sernum for dst validation with nexthop objects 2020-05-01 12:46:30 -07:00
net_ratelimit.h
netevent.h
netlabel.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
netlink.h netlink: add infrastructure to expose policies to userspace 2020-04-30 17:51:42 -07:00
netprio_cgroup.h netprio: use css ID instead of cgroup ID 2019-11-12 08:18:03 -08:00
netrom.h net: netrom: Fix error cleanup path of nr_proto_init 2019-04-11 13:59:49 -07:00
nexthop.h nexthop: add support for notifiers 2020-05-22 14:00:38 -07:00
nl802154.h
nsh.h
p8022.h
page_pool.h net: page_pool: API cleanup and comments 2020-02-20 10:09:25 -08:00
pie.h pie: realign comment 2020-03-04 13:25:55 -08:00
ping.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pkt_cls.h net: sched: implement terse dump support in act 2020-05-15 10:23:11 -07:00
pkt_sched.h net_sched: add qdisc_watchdog_schedule_range_ns() 2020-03-17 21:16:34 -07:00
pptp.h
protocol.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
psample.h net: sched: take reference to psample group in flow_action infra 2019-09-16 09:18:03 +02:00
psnap.h
raw.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rawv6.h
red.h net: sched: RED: Introduce an ECN nodrop mode 2020-03-14 21:03:46 -07:00
regulatory.h ieee80211: share 802.11 unit conversion helpers 2020-04-24 12:33:43 +02:00
request_sock.h net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head 2019-10-09 21:34:31 -07:00
rose.h
route.h Remove DST_HOST 2020-03-23 21:57:44 -07:00
rpl.h net: ipv6: add rpl sr tunnel 2020-03-29 22:30:57 -07:00
rsi_91x.h
rtnetlink.h
rtnh.h net: Rename net/nexthop.h net/rtnh.h 2019-04-22 21:47:25 -07:00
sch_generic.h net: sched: introduce terse dump flag 2020-05-15 10:23:11 -07:00
scm.h
secure_seq.h
seg6_hmac.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
seg6_local.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
seg6.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
slhc_vj.h
smc.h net/smc: introduce bookkeeping of SMCD link groups 2019-11-15 12:28:28 -08:00
snmp.h net/tls: add skeleton of MIB statistics 2019-10-05 16:29:00 -07:00
sock_reuseport.h net: sock_reuseport: Replace zero-length array with flexible-array member 2020-02-29 21:52:19 -08:00
sock.h net: sock.h: fix skb_steal_sock() kernel-doc 2020-04-07 18:09:30 -07:00
Space.h
stp.h
strparser.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
switchdev.h switchdev: mrp: Remove the variable mrp_ring_state 2020-05-22 16:17:15 -07:00
tcp_states.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tcp.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-15 13:48:59 -07:00
timewait_sock.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tipc.h
tls_toe.h net/tls: rename tls_hw_* functions tls_toe_* 2019-10-04 14:07:07 -07:00
tls.h net/tls: add helper for testing if socket is RX offloaded 2019-12-19 17:46:51 -08:00
transp_v6.h
tso.h
tun_proto.h
udp_tunnel.h net: bareudp: avoid uninitialized variable warning 2020-05-07 17:28:18 -07:00
udp.h bpf: Add sockmap hooks for UDP sockets 2020-03-09 22:34:58 +01:00
udplite.h
vsock_addr.h vsock: remove include/linux/vm_sockets.h file 2019-11-14 18:12:17 -08:00
vxlan.h vxlan: ecmp support for mac fdb entries 2020-05-22 14:00:38 -07:00
wext.h
wimax.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 268 2019-06-05 17:30:29 +02:00
x25.h net/x25: add new state X25_STATE_5 2019-12-09 10:28:43 -08:00
x25device.h
xdp_priv.h page_pool: do not release pool until inflight == 0. 2019-11-16 12:39:10 -08:00
xdp_sock_drv.h xsk: Remove MEM_TYPE_ZERO_COPY and corresponding code 2020-05-21 17:31:27 -07:00
xdp_sock.h xsk: Remove MEM_TYPE_ZERO_COPY and corresponding code 2020-05-21 17:31:27 -07:00
xdp.h xsk: Remove MEM_TYPE_ZERO_COPY and corresponding code 2020-05-21 17:31:27 -07:00
xfrm.h xfrm: add espintcp (RFC 8229) 2019-12-09 09:59:07 +01:00
xsk_buff_pool.h xsk: Explicitly inline functions and move definitions 2020-05-21 17:31:27 -07:00