Paolo Abeni 2e5d316882 udp: fix rx queue len reported by diag and proc interface ...

[ Upstream commit 6c206b2009 ]

After commit 6b229cf77d ("udp: add batching to udp_rmem_release()")
the sk_rmem_alloc field does not measure exactly anymore the
receive queue length, because we batch the rmem release. The issue
is really apparent only after commit 0d4a6608f6 ("udp: do rmem bulk
free even if the rx sk queue is empty"): the user space can easily
check for an empty socket with not-0 queue length reported by the 'ss'
tool or the procfs interface.

We need to use a custom UDP helper to report the correct queue length,
taking into account the forward allocation deficit.

Reported-by: trevor.francis@46labs.com
Fixes: 6b229cf77d ("UDP: add batching to udp_rmem_release()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-06-26 08:06:28 +08:00

..

netfilter

netfilter: ipt_CLUSTERIP: put config instead of freeing it

2018-05-30 07:52:03 +02:00

af_inet.c

net: accept UFO datagrams from tuntap and packet

2017-12-17 15:07:58 +01:00

ah4.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next

2017-06-23 14:17:31 -04:00

arp.c

arp: fix arp_filter on l3slave devices

2018-04-12 12:32:22 +02:00

cipso_ipv4.c

tcp/dccp: fix ireq->opt races

2017-10-21 01:33:19 +01:00

datagram.c

net: Set sk_txhash from a random number

2015-07-29 22:44:04 -07:00

devinet.c

ipv4: igmp: guard against silly MTU values

2018-01-02 20:31:06 +01:00

esp4_offload.c

esp: Fix GRO when the headers not fully in the linear part of the skb.

2018-02-25 11:07:46 +01:00

esp4.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-09-01 17:42:05 -07:00

fib_frontend.c

net: ipv4: add missing RTA_TABLE to rtm_ipv4_policy

2018-06-11 22:49:19 +02:00

fib_lookup.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

fib_notifier.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

fib_rules.c

net: fib_rules: Implement notification logic in core

2017-08-03 15:35:59 -07:00

fib_semantics.c

net: metrics: add proper netlink validation

2018-06-11 22:49:19 +02:00

fib_trie.c

ipv4: do metrics match when looking up and deleting a route

2017-08-23 20:37:10 -07:00

fou.c

gue: fix remcsum when GRO on and CHECKSUM_PARTIAL boundary is outer UDP

2017-08-01 16:09:14 -07:00

gre_demux.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-06-30 05:03:36 -04:00

gre_offload.c

gso: fix payload length when gso_size is zero

2017-10-08 10:12:15 -07:00

icmp.c

icmp: don't fail on fragment reassembly time exceeded

2017-12-20 10:10:37 +01:00

igmp.c

net: igmp: add a missing rcu locking section

2018-02-13 10:19:47 +01:00

inet_connection_sock.c

Revert "defer call to mem_cgroup_sk_alloc()"

2018-02-13 10:19:48 +01:00

inet_diag.c

inet_diag: allow protocols to provide additional data

2017-09-01 18:38:09 -07:00

inet_fragment.c

net: Fix hlist corruptions in inet_evict_bucket()

2018-03-31 18:10:40 +02:00

inet_hashtables.c

soreuseport: fix initialization race

2017-10-22 02:03:51 +01:00

inet_timewait_sock.c

soreuseport: initialise timewait reuseport field

2018-05-16 10:10:24 +02:00

inetpeer.c

inetpeer: fix uninit-value in inet_getpeer

2018-05-16 10:10:24 +02:00

ip_forward.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ip_fragment.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ip_gre.c

ip_gre: fix IFLA_MTU ignored on NEWLINK

2018-05-30 07:52:05 +02:00

ip_input.c

IPv4: early demux can return an error code

2017-10-01 03:55:47 +01:00

ip_options.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ip_output.c

net: test tailroom before appending to linear skb

2018-05-25 16:17:24 +02:00

ip_sockglue.c

ipv4: remove warning in ip_recv_error

2018-06-11 22:49:19 +02:00

ip_tunnel_core.c

net: store port/representator id in metadata_dst

2017-06-25 11:42:01 -04:00

ip_tunnel.c

ip_tunnel: Clamp MTU to bounds on new link

2018-05-30 07:52:16 +02:00

ip_vti.c

Revert "vti4: Don't override MTU passed on link creation via IFLA_MTU"

2018-05-30 22:32:31 +02:00

ipcomp.c

ipv4: coding style: comparison for equality with NULL

2015-04-03 12:11:15 -04:00

ipconfig.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ipip.c

ipip: only increase err_count for some certain type icmp in ipip_err

2017-10-27 23:43:31 +09:00

ipmr.c

ipmr: properly check rhltable_init() return value

2018-06-11 22:49:19 +02:00

Kconfig

ip: update policy routing config help

2017-10-12 22:57:11 -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

netfilter.c

netfilter: use skb_to_full_sk in ip_route_me_harder

2017-02-28 12:49:36 +01:00

ping.c

ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg

2018-05-19 10:20:23 +02:00

proc.c

tcp: Revert "tcp: remove header prediction"

2017-08-30 11:20:09 -07:00

protocol.c

net: Add sysctl to toggle early demux for tcp and udp

2017-03-24 13:17:07 -07:00

raw_diag.c

net: ipv6: add second dif to raw socket lookups

2017-08-07 11:39:22 -07:00

raw.c

net: ipv4: fix for a race condition in raw_sendmsg

2018-01-02 20:31:08 +01:00

route.c

ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu

2018-05-30 07:52:14 +02:00

syncookies.c

tcp/dccp: fix ireq->opt races

2017-10-21 01:33:19 +01:00

sysctl_net_ipv4.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tcp_bbr.c

tcp_bbr: fix to zero idle_restart only upon S/ACKed data

2018-05-19 10:20:25 +02:00

tcp_bic.c

tcp: consolidate congestion control undo functions

2017-08-06 21:25:10 -07:00

tcp_cdg.c

tcp: consolidate congestion control undo functions

2017-08-06 21:25:10 -07:00

tcp_cong.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-09-01 17:42:05 -07:00

tcp_cubic.c

tcp: consolidate congestion control undo functions

2017-08-06 21:25:10 -07:00

tcp_dctcp.c

Revert "dctcp: update cwnd on congestion event"

2016-12-06 11:34:24 -05:00

tcp_diag.c

tcp_diag: report TCP MD5 signing keys and addresses

2017-09-01 18:38:09 -07:00

tcp_fastopen.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tcp_highspeed.c

tcp: consolidate congestion control undo functions

2017-08-06 21:25:10 -07:00

tcp_htcp.c

tcp: fix cwnd undo in Reno and HTCP congestion controls

2017-08-06 21:25:10 -07:00

tcp_hybla.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_illinois.c

net/tcp/illinois: replace broken algorithm reference link

2018-05-30 07:52:06 +02:00

tcp_input.c

tcp: do not overshoot window_clamp in tcp_rcv_space_adjust()

2018-06-21 04:03:02 +09:00

tcp_ipv4.c

tcp: verify the checksum of the first data segment in a new connection

2018-06-26 08:06:28 +08:00

tcp_lp.c

tcp: switch TCP TS option (RFC 7323) to 1ms clock

2017-05-17 16:06:01 -04:00

tcp_metrics.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tcp_minisocks.c

tcp/dccp: block bh before arming time_wait timer

2017-12-17 15:07:57 +01:00

tcp_nv.c

tcp_nv: fix potential integer overflow in tcpnv_acked

2018-04-26 11:02:13 +02:00

tcp_offload.c

gso: validate gso_type in GSO handlers

2018-01-31 14:03:47 +01:00

tcp_output.c

tcp: purge write queue in tcp_connect_init()

2018-05-25 16:17:25 +02:00

tcp_probe.c

tcp: remove redundant argument from tcp_rcv_established()

2017-07-24 17:28:12 -07:00

tcp_rate.c

tcp: invalidate rate samples during SACK reneging

2018-01-02 20:31:09 +01:00

tcp_recovery.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tcp_scalable.c

tcp: consolidate congestion control undo functions

2017-08-06 21:25:10 -07:00

tcp_timer.c

tcp: purge write queue upon aborting the connection

2018-03-31 18:10:38 +02:00

tcp_ulp.c

tcp: ulp: avoid module refcnt leak in tcp_set_ulp

2017-08-14 22:17:05 -07:00

tcp_vegas.c

tcp: fix under-evaluated ssthresh in TCP Vegas

2017-12-25 14:26:30 +01:00

tcp_vegas.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tcp_veno.c

tcp: consolidate congestion control undo functions

2017-08-06 21:25:10 -07:00

tcp_westwood.c

tcp: Revert "tcp: remove CA_ACK_SLOWPATH"

2017-08-30 11:20:08 -07:00

tcp_yeah.c

tcp: consolidate congestion control undo functions

2017-08-06 21:25:10 -07:00

tcp.c

tcp: ignore Fast Open on repair mode

2018-05-19 10:20:25 +02:00

tunnel4.c

tunnels: correct conditional build of MPLS and IPv6

2016-07-11 13:27:06 -07:00

udp_diag.c

udp: fix rx queue len reported by diag and proc interface

2018-06-26 08:06:28 +08:00

udp_impl.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

udp_offload.c

gso: validate gso_type in GSO handlers

2018-01-31 14:03:47 +01:00

udp_tunnel.c

net: add infrastructure to un-offload UDP tunnel port

2017-07-24 13:52:59 -07:00

udp.c

udp: fix rx queue len reported by diag and proc interface

2018-06-26 08:06:28 +08:00

udplite.c

udplite: call proper backlog handlers

2016-11-24 15:32:14 -05:00

xfrm4_input.c

xfrm: Reinject transport-mode packets through tasklet

2018-03-03 10:24:25 +01:00

xfrm4_mode_beet.c

networking: make skb_pull & friends return void pointers

2017-06-16 11:48:39 -04:00

xfrm4_mode_transport.c

xfrm: Add encapsulation header offsets while SKB is not encrypted

2017-04-14 10:07:39 +02:00

xfrm4_mode_tunnel.c

xfrm: Add encapsulation header offsets while SKB is not encrypted

2017-04-14 10:07:39 +02:00

xfrm4_output.c

xfrm: Add an IPsec hardware offloading API

2017-04-14 10:06:10 +02:00

xfrm4_policy.c

ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu

2018-05-30 07:52:14 +02:00

xfrm4_protocol.c

xfrm: input: constify xfrm_input_afinfo

2017-02-09 10:22:17 +01:00

xfrm4_state.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

xfrm4_tunnel.c

…