android_kernel_oneplus_msm8998/include/net
Eric Dumazet 567ef0554b inet: frags: break the 2GB limit for frags storage
commit 3e67f106f619dcfaf6f4e2039599bdb69848c714 upstream.

Some users are willing to provision huge amounts of memory to be able
to perform reassembly reasonnably well under pressure.

Current memory tracking is using one atomic_t and integers.

Switch to atomic_long_t so that 64bit arches can use more than 2GB,
without any cost for 32bit arches.

Note that this patch avoids an overflow error, if high_thresh was set
to ~2GB, since this test in inet_frag_alloc() was never true :

if (... || frag_mem_limit(nf) > nf->high_thresh)

Tested:

$ echo 16000000000 >/proc/sys/net/ipv4/ipfrag_high_thresh

<frag DDOS>

$ grep FRAG /proc/net/sockstat
FRAG: inuse 14705885 memory 16000002880

$ nstat -n ; sleep 1 ; nstat | grep Reas
IpReasmReqds                    3317150            0.0
IpReasmFails                    3317112            0.0

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-08 11:25:31 +01:00
..
9p 9p: switch p9_client_read() to passing struct iov_iter * 2015-04-11 22:28:27 -04:00
bluetooth Bluetooth: Fix connection if directed advertising and privacy is used 2018-07-03 11:21:35 +02:00
caif
irda
iucv s390/iucv: do not use arrays as argument 2015-09-21 16:03:04 -07:00
netfilter netfilter: nf_queue: Make the queue_handler pernet 2018-02-16 20:09:40 +01:00
netns netfilter: ipv6: nf_defrag: reduce struct net memory waste 2018-08-24 13:26:53 +02:00
nfc NFC: Fix the number of pipes 2018-09-29 03:08:51 -07:00
phonet
sctp sctp: potential read out of bounds in sctp_ulpevent_type_enabled() 2017-10-21 17:09:01 +02:00
tc_act act_connmark: Remember the struct net instead of guessing it. 2015-09-18 21:59:31 +02:00
6lowpan.h 6lowpan: remove lowpan_is_addr_broadcast 2015-10-21 00:49:25 +02:00
act_api.h net_sched: make tcf_hash_destroy() static 2015-08-26 11:01:44 -07:00
addrconf.h ipv6: reorder ip6_route_dev_notifier after ipv6_dev_notf 2017-05-14 13:32:58 +02:00
af_ieee802154.h ieee802154: af_ieee802154: fix typo in comment. 2015-09-17 13:20:05 +02:00
af_rxrpc.h
af_unix.h af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock' 2016-09-30 10:18:36 +02:00
af_vsock.h vsock: split dwork to avoid reinitializations 2018-08-22 07:48:35 +02:00
ah.h
arp.h ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY 2018-01-31 12:06:14 +01:00
atmclip.h
ax25.h ax25: Stop using sock->sk_protinfo. 2015-06-28 16:55:44 -07:00
ax88796.h
bond_3ad.h bonding: simplify / unify event handling code for 3ad mode. 2015-11-02 22:52:24 -05:00
bond_alb.h
bond_options.h bonding: convert num_grat_arp to the new bonding option API 2015-07-27 01:05:24 -07:00
bonding.h bonding: avoid possible dead-lock 2018-10-20 09:52:36 +02:00
busy_poll.h
cfg80211-wext.h
cfg80211.h cfg80211: make RATE_INFO_BW_20 the default 2018-04-13 19:50:00 +02:00
cfg802154.h nl802154: add support for security layer 2015-09-30 13:16:44 +02:00
checksum.h net: Add inet_proto_csum_replace_by_diff utility function 2015-08-17 21:33:06 -07:00
cipso_ipv4.h netlabel: out of bound access in cipso_v4_validate() 2017-02-18 16:39:26 +01:00
cls_cgroup.h cls_cgroup: factor out classid retrieval 2015-07-20 12:41:30 -07:00
codel.h net_sched: update hierarchical backlog too 2016-05-18 17:06:39 -07:00
compat.h net: switch importing msghdr from userland to {compat_,}import_iovec() 2015-04-09 00:02:26 -04:00
datalink.h
dcbevent.h
dcbnl.h net/dcb: Add IEEE QCN attribute 2015-03-06 21:50:02 -05:00
dn.h
dn_dev.h
dn_fib.h
dn_neigh.h netfilter: Pass net into okfn 2015-09-17 17:18:37 -07:00
dn_nsp.h
dn_route.h
dsa.h net: dsa: use switchdev obj for VLAN add/del ops 2015-11-01 15:56:11 -05:00
dsfield.h
dst.h ipv4: add reference counting to metrics 2017-06-07 12:05:59 +02:00
dst_cache.h net: add dst_cache support 2018-02-25 11:03:34 +01:00
dst_metadata.h gro: Make GRO aware of lightweight tunnels. 2016-03-03 15:07:04 -08:00
dst_ops.h ipv4, ipv6: Pass net into __ip_local_out and __ip6_local_out 2015-10-08 04:27:02 -07:00
esp.h
ethoc.h net/ethoc: support big-endian register layout 2015-09-23 15:33:15 -07:00
fib_rules.h net: ipv6: use common fib_default_rule_pref 2015-09-09 14:19:50 -07:00
firewire.h
flow.h net: Rename FLOWI_FLAG_VRFSRC to FLOWI_FLAG_L3MDEV_SRC 2015-10-07 04:27:42 -07:00
flow_dissector.h flow_dissector: Don't use bit fields. 2015-09-01 16:46:08 -07:00
flowcache.h
fou.h
garp.h
gen_stats.h
genetlink.h netlink: add a start callback for starting a netlink dump 2017-12-05 11:22:49 +01:00
geneve.h geneve: Consolidate Geneve functionality in single module. 2015-08-27 15:42:48 -07:00
gre.h gre: Remove support for sharing GRE protocol hook. 2015-08-10 14:03:54 -07:00
gro_cells.h gro_cell: add napi_disable in gro_cells_destroy 2019-01-13 10:05:28 +01:00
gue.h
icmp.h
ieee80211_radiotap.h
ieee802154_netdev.h nl802154: add support for security layer 2015-09-30 13:16:44 +02:00
if_inet6.h ipv6: do retries on stable privacy addresses 2015-03-23 22:12:09 -04:00
inet6_connection_sock.h ipv6: remove obsolete inet6 functions 2015-10-03 04:32:42 -07:00
inet6_hashtables.h ipv6: get rid of __inet6_hash() 2015-03-18 22:00:35 -04:00
inet_common.h net: avoid NULL deref in inet_ctl_sock_destroy() 2015-11-02 22:46:09 -05:00
inet_connection_sock.h tcp/dccp: fix another race at listener dismantle 2016-03-03 15:07:07 -08:00
inet_ecn.h ipv6: suppress sparse warnings in IP6_ECN_set_ce() 2018-11-10 07:41:34 -08:00
inet_frag.h inet: frags: break the 2GB limit for frags storage 2019-02-08 11:25:31 +01:00
inet_hashtables.h tcp/dccp: fix hashdance race for passive sessions 2015-10-23 05:42:21 -07:00
inet_sock.h tcp/dccp: fix other lockdep splats accessing ireq_opt 2017-11-18 11:11:07 +01:00
inet_timewait_sock.h soreuseport: initialise timewait reuseport field 2018-05-16 10:06:50 +02:00
inetpeer.h inet: tcp: fix inetpeer_set_addr_v4() 2015-12-16 00:14:12 -05:00
ip.h inet: frags: remove some helpers 2019-02-08 11:25:31 +01:00
ip6_checksum.h
ip6_fib.h ipv6: fix sparse warning on rt6i_node 2017-09-27 11:00:10 +02:00
ip6_route.h net: ipv6: Compare lwstate in detecting duplicate nexthops 2017-07-21 07:44:55 +02:00
ip6_tunnel.h net: replace dst_cache ip6_tunnel implementation with the generic one 2018-02-25 11:03:34 +01:00
ip_fib.h net: ipv4: Fix memory leak in network namespace dismantle 2019-02-06 19:43:03 +01:00
ip_tunnels.h ip_tunnel: replace dst_cache with generic implementation 2018-02-28 10:17:21 +01:00
ip_vs.h ipvs: drop first packet to redirect conntrack 2016-05-11 11:21:09 +02:00
ipcomp.h
ipconfig.h
ipv6.h inet: frags: remove some helpers 2019-02-08 11:25:31 +01:00
ipx.h
iw_handler.h wext: handle NULL extra data in iwe_stream_add_point better 2017-08-11 09:08:56 -07:00
l3mdev.h net: Propagate lookup failure in l3mdev_get_saddr to caller 2016-01-04 22:58:30 -05:00
lapb.h
lib80211.h
llc.h llc: use refcount_inc_not_zero() for llc_sap_find() 2018-08-22 07:48:35 +02:00
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h llc: properly handle dev_queue_xmit() return value 2018-05-30 07:49:06 +02:00
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
lwtunnel.h dst: Pass net into dst->output 2015-10-08 04:27:03 -07:00
mac80211.h mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4 2018-05-30 07:48:59 +02:00
mac802154.h 6lowpan: cleanup lowpan_header_decompress 2015-10-21 00:49:24 +02:00
mip6.h
mld.h
mpls.h
mpls_iptunnel.h mpls: multipath route support 2015-10-23 06:26:42 -07:00
mrp.h
ndisc.h Revert "ipv6: ndisc: inherit metadata dst when creating ndisc requests" 2015-12-01 15:07:59 -05:00
neighbour.h neighbour: Avoid writing before skb->head in neigh_hh_output() 2018-12-17 21:55:09 +01:00
net_namespace.h netfilter: ipv6: nf_defrag: reduce struct net memory waste 2018-08-24 13:26:53 +02:00
net_ratelimit.h
netevent.h
netlabel.h
netlink.h netlink: fix nla_put_{u8,u16,u32} for KASAN 2018-02-25 11:03:51 +01:00
netprio_cgroup.h
netrom.h
nexthop.h net: fix rtnh_ok() 2018-05-16 10:06:50 +02:00
nl802154.h nl802154: add support for security layer 2015-09-30 13:16:44 +02:00
p8022.h
ping.h net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
pkt_cls.h
pkt_sched.h net: sched: consolidate tc_classify{,_compat} 2015-08-27 14:18:48 -07:00
protocol.h
psnap.h
raw.h
rawv6.h
red.h net_sched: red: Avoid illegal values 2018-02-25 11:03:40 +01:00
regulatory.h regulatory: add NUL to request alpha2 2018-05-30 07:49:00 +02:00
request_sock.h tcp/dccp: fix race at listener dismantle phase 2015-10-16 00:52:19 -07:00
rose.h
route.h ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu 2018-05-30 07:49:04 +02:00
rtnetlink.h netlink: Rightsize IFLA_AF_SPEC size calculation 2015-10-21 19:15:20 -07:00
sch_generic.h net_sched: fix order of queue length updates in qdisc_replace() 2017-08-30 10:19:21 +02:00
scm.h unix: correctly track in-flight fds in sending process user_struct 2016-03-03 15:07:05 -08:00
secure_seq.h
slhc_vj.h slip: Check if rstate is initialized before uncompressing 2018-04-24 09:32:04 +02:00
snmp.h
sock.h sock: Make sock->sk_stamp thread-safe 2019-01-13 10:05:28 +01:00
Space.h
stp.h
switchdev.h switchdev: pass pointer to fib_info instead of copy 2016-06-24 10:18:16 -07:00
tcp.h tcp: use an RB tree for ooo receive queue 2018-10-13 09:11:34 +02:00
tcp_memcontrol.h
tcp_states.h inet: add TCP_NEW_SYN_RECV state 2015-03-12 22:58:12 -04:00
timewait_sock.h inet: remove BUG_ON() in twsk_destructor() 2015-07-09 15:12:20 -07:00
transp_v6.h
tso.h net: tso: add support for IPv6 2015-10-26 22:24:22 -07:00
udp.h net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
udp_tunnel.h vxlan: do not receive IPv4 packets on IPv6 socket 2015-08-29 13:07:54 -07:00
udplite.h udplite: fix partial checksum initialization 2018-03-11 16:19:46 +01:00
vsock_addr.h
vxlan.h vxlan: fix incorrect RCO bit in VXLAN header 2015-12-05 18:15:29 -05:00
wext.h
wimax.h
x25.h net: x25: fix one potential use-after-free issue 2018-04-13 19:50:07 +02:00
x25device.h
xfrm.h xfrm: fix stack access out of bounds with CONFIG_XFRM_SUB_POLICY 2017-07-05 14:37:21 +02:00