Jesper Dangaard Brouer 849a44de91 net: don't global ICMP rate limit packets originating from loopback ... Florian Weimer seems to have a glibc test-case which requires that loopback interfaces does not get ICMP ratelimited. This was broken by commit c0303efeab ("net: reduce cycles spend on ICMP replies that gets rate limited"). An ICMP response will usually be routed back-out the same incoming interface. Thus, take advantage of this and skip global ICMP ratelimit when the incoming device is loopback. In the unlikely event that the outgoing it not loopback, due to strange routing policy rules, ICMP rate limiting still works via peer ratelimiting via icmpv4_xrlim_allow(). Thus, we should still comply with RFC1812 (section 4.3.2.8 "Rate Limiting"). This seems to fix the reproducer given by Florian. While still avoiding to perform expensive and unneeded outgoing route lookup for rate limited packets (in the non-loopback case). Fixes: c0303efeab ("net: reduce cycles spend on ICMP replies that gets rate limited") Reported-by: Florian Weimer <fweimer@redhat.com> Reported-by: "H.J. Lu" <hjl.tools@gmail.com> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-06-14 15:33:58 -04:00
..
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2017-05-01 10:47:53 -04:00
Kconfig	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2017-02-16 21:25:49 -05:00
Makefile	ipv4: fib: Move FIB notification code to a separate file	2017-03-10 09:45:09 -08:00
af_inet.c	net: ping: do not abuse udp_poll()	2017-06-04 22:56:55 -04:00
ah4.c	IPsec: do not ignore crypto err in ah4 input	2017-01-16 12:57:48 +01:00
arp.c	arp: fixed -Wuninitialized compiler warning	2017-05-25 13:38:20 -04:00
cipso_ipv4.c	netlabel: out of bound access in cipso_v4_validate()	2017-02-04 19:44:22 -05:00
datagram.c	net: Set sk_txhash from a random number	2015-07-29 22:44:04 -07:00
devinet.c	net: rtnetlink: plumb extended ack to doit function	2017-04-17 15:35:38 -04:00
esp4.c	esp4: Fix udpencap for local TCP packets.	2017-05-04 07:27:26 +02:00
esp4_offload.c	esp4/6: Fix GSO path for non-GSO SW-crypto packets	2017-04-19 07:48:57 +02:00
fib_frontend.c	net: Improve handling of failures on link and route dumps	2017-05-16 14:54:11 -04:00
fib_lookup.h	ipv4: consider TOS in fib_select_default	2015-07-24 22:46:11 -07:00
fib_notifier.c	ipv4: fib: Remove redundant argument	2017-03-10 09:45:09 -08:00
fib_rules.c	ipv4: fib_rules: Dump FIB rules when registering FIB notifier	2017-03-16 10:18:34 -07:00
fib_semantics.c	ipv4: add reference counting to metrics	2017-05-26 14:57:07 -04:00
fib_trie.c	net: Improve handling of failures on link and route dumps	2017-05-16 14:54:11 -04:00
fou.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-10-30 12:42:58 -04:00
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	net: add recursion limit to GRO	2016-10-20 14:32:22 -04:00
icmp.c	net: don't global ICMP rate limit packets originating from loopback	2017-06-14 15:33:58 -04:00
igmp.c	igmp: acquire pmc lock for ip_mc_clear_src()	2017-06-13 12:51:37 -04:00
inet_connection_sock.c	dccp/tcp: do not inherit mc_list from parent	2017-05-09 15:17:49 -04:00
inet_diag.c	tcp: remove early retransmit	2017-01-13 22:37:16 -05:00
inet_fragment.c	net: disable fragment reassembly if high_thresh is zero	2016-06-05 22:56:42 -04:00
inet_hashtables.c	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00
inet_timewait_sock.c	ipv4: Namespaceify tcp_tw_recycle and tcp_max_tw_buckets knob	2016-12-29 11:38:31 -05:00
inetpeer.c	net: Add helper function to compare inetpeer addresses	2015-08-28 13:32:36 -07:00
ip_forward.c	ipv4: allow local fragmentation in ip_finish_output_gso()	2016-11-03 16:10:26 -04:00
ip_fragment.c	inet: frag: release spinlock before calling icmp_send()	2017-03-22 15:40:45 -07:00
ip_gre.c	ip_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:31 -04:00
ip_input.c	net: Add sysctl to toggle early demux for tcp and udp	2017-03-24 13:17:07 -07:00
ip_options.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
ip_output.c	udp: avoid ufo handling on IP payload compression packets	2017-03-09 18:28:42 -08:00
ip_sockglue.c	ipv4: get rid of ip_ra_lock	2017-04-30 22:44:04 -04:00
ip_tunnel.c	net: Fix inconsistent teardown and release of private netdev state.	2017-06-07 15:53:24 -04:00
ip_tunnel_core.c	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
ip_vti.c	vti: check nla_put_* return value	2017-05-08 15:10:31 -04:00
ipcomp.c	ipv4: coding style: comparison for equality with NULL	2015-04-03 12:11:15 -04:00
ipconfig.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-06 08:24:51 -07:00
ipip.c	ip_tunnel: Allow policy-based routing through tunnels	2017-04-21 13:21:31 -04:00
ipmr.c	net: ipmr: Fix some mroute forwarding issues in vrf's	2017-06-11 18:15:06 -04:00
netfilter.c	netfilter: use skb_to_full_sk in ip_route_me_harder	2017-02-28 12:49:36 +01:00
ping.c	ping: implement proper locking	2017-03-24 20:50:28 -07:00
proc.c	net/tcp_fastopen: Add snmp counter for blackhole detection	2017-04-24 14:27:17 -04:00
protocol.c	net: Add sysctl to toggle early demux for tcp and udp	2017-03-24 13:17:07 -07:00
raw.c	ipv4, ipv6: ensure raw socket message is big enough to hold an IP header	2017-05-04 11:02:46 -04:00
raw_diag.c	net: ip, raw_diag -- Use jump for exiting from nested loop	2016-11-03 15:25:26 -04:00
route.c	ipv4: add reference counting to metrics	2017-05-26 14:57:07 -04:00
syncookies.c	tcp: randomize timestamps on syncookies	2017-05-05 12:00:11 -04:00
sysctl_net_ipv4.c	net/tcp_fastopen: Disable active side TFO in certain scenarios	2017-04-24 14:27:17 -04:00
tcp.c	tcp: reinitialize MTU probing when setting MSS in a TCP repair	2017-05-31 12:28:59 -04:00
tcp_bbr.c	tcp_bbr: add a state transition diagram and accompanying comment	2016-10-29 17:12:43 -04:00
tcp_bic.c	tcp: replace cnt & rtt with struct in pkts_acked()	2016-05-11 14:43:19 -04:00
tcp_cdg.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>	2017-03-02 08:42:27 +01:00
tcp_cong.c	tcp: disallow cwnd undo when switching congestion control	2017-06-02 14:18:13 -04:00
tcp_cubic.c	tcp_cubic: fix typo in module param description	2017-04-20 16:16:44 -04:00
tcp_dctcp.c	Revert "dctcp: update cwnd on congestion event"	2016-12-06 11:34:24 -05:00
tcp_diag.c	net: diag: Fix refcnt leak in error path destroying socket	2016-08-23 23:11:36 -07:00
tcp_fastopen.c	net/tcp_fastopen: Add snmp counter for blackhole detection	2017-04-24 14:27:17 -04:00
tcp_highspeed.c	tcp: add cwnd_undo functions to various tcp cc algorithms	2016-11-21 13:20:17 -05:00
tcp_htcp.c	tcp: replace cnt & rtt with struct in pkts_acked()	2016-05-11 14:43:19 -04:00
tcp_hybla.c	tcp: make undo_cwnd mandatory for congestion modules	2016-11-21 13:20:17 -05:00
tcp_illinois.c	tcp: add cwnd_undo functions to various tcp cc algorithms	2016-11-21 13:20:17 -05:00
tcp_input.c	tcp: eliminate negative reordering in tcp_clean_rtx_queue	2017-05-16 12:45:21 -04:00
tcp_ipv4.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-10 10:30:46 -07:00
tcp_lp.c	tcp: fix wraparound issue in tcp_lp	2017-05-02 15:07:02 -04:00
tcp_metrics.c	treewide: use kv[mz]alloc* rather than opencoded variants	2017-05-08 17:15:13 -07:00
tcp_minisocks.c	tcp: do not inherit fastopen_req from parent	2017-05-04 11:00:04 -04:00
tcp_nv.c	tcp: add NV congestion control	2016-06-10 23:07:49 -07:00
tcp_offload.c	gso: Support partial splitting at the frag_list pointer	2016-09-19 20:59:34 -04:00
tcp_output.c	tcp: make congestion control optionally skip slow start after idle	2017-05-08 14:37:07 -04:00
tcp_probe.c	tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"	2017-02-21 13:26:03 -05:00
tcp_rate.c	tcp: do not pass timestamp to tcp_rate_gen()	2017-04-26 14:44:38 -04:00
tcp_recovery.c	tcp: tcp_rack_reo_timeout() must update tp->tcp_mstamp	2017-04-27 11:46:15 -04:00
tcp_scalable.c	tcp: add cwnd_undo functions to various tcp cc algorithms	2016-11-21 13:20:17 -05:00
tcp_timer.c	net/tcp_fastopen: Remove mss check in tcp_write_timeout()	2017-04-24 14:27:17 -04:00
tcp_vegas.c	tcp: make undo_cwnd mandatory for congestion modules	2016-11-21 13:20:17 -05:00
tcp_vegas.h	tcp: replace cnt & rtt with struct in pkts_acked()	2016-05-11 14:43:19 -04:00
tcp_veno.c	tcp: add cwnd_undo functions to various tcp cc algorithms	2016-11-21 13:20:17 -05:00
tcp_westwood.c	tcp_westwood: fix tcp_westwood_info() style mistakes	2017-03-16 20:23:28 -07:00
tcp_yeah.c	tcp: add cwnd_undo functions to various tcp cc algorithms	2016-11-21 13:20:17 -05:00
tunnel4.c	tunnels: correct conditional build of MPLS and IPv6	2016-07-11 13:27:06 -07:00
udp.c	udp: make *udp*_queue_rcv_skb() functions static	2017-05-18 10:23:33 -04:00
udp_diag.c	net: inet: diag: expose the socket mark to privileged processes.	2016-09-08 16:13:09 -07:00
udp_impl.h	udp: make *udp*_queue_rcv_skb() functions static	2017-05-18 10:23:33 -04:00
udp_offload.c	udp: disable inner UDP checksum offloads in IPsec case	2017-04-24 13:48:54 -04:00
udp_tunnel.c	net: Remove deprecated tunnel specific UDP offload functions	2016-06-17 20:23:32 -07:00
udplite.c	udplite: call proper backlog handlers	2016-11-24 15:32:14 -05:00
xfrm4_input.c	esp: Add a software GRO codepath	2017-02-15 11:04:11 +01:00
xfrm4_mode_beet.c	…
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	xfrm: policy: make policy backend const	2017-02-09 10:22:19 +01:00
xfrm4_protocol.c	xfrm: input: constify xfrm_input_afinfo	2017-02-09 10:22:17 +01:00
xfrm4_state.c	xfrm: remove unused function	2017-01-10 10:57:12 +01:00
xfrm4_tunnel.c	…