Jon Maxwell
584756c3d7
ipv6: remove max_size check inline with ipv4
commit af6d10345ca76670c1b7c37799f0d5576ccef277 upstream.
In ip6_dst_gc() replace:
if (entries > gc_thresh)
With:
if (entries > ops->gc_thresh)
Sending Ipv6 packets in a loop via a raw socket triggers an issue where a
route is cloned by ip6_rt_cache_alloc() for each packet sent. This quickly
consumes the Ipv6 max_size threshold which defaults to 4096 resulting in
these warnings:
[1] 99.187805] dst_alloc: 7728 callbacks suppressed
[2] Route cache is full: consider increasing sysctl net.ipv6.route.max_size.
.
.
[300] Route cache is full: consider increasing sysctl net.ipv6.route.max_size.
When this happens the packet is dropped and sendto() gets a network is
unreachable error:
remaining pkt 200557 errno 101
remaining pkt 196462 errno 101
.
.
remaining pkt 126821 errno 101
Implement David Aherns suggestion to remove max_size check seeing that Ipv6
has a GC to manage memory usage. Ipv4 already does not check max_size.
Here are some memory comparisons for Ipv4 vs Ipv6 with the patch:
Test by running 5 instances of a program that sends UDP packets to a raw
socket 5000000 times. Compare Ipv4 and Ipv6 performance with a similar
program.
Ipv4:
Before test:
MemFree: 29427108 kB
Slab: 237612 kB
ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0
xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0
ip_dst_cache 2881 3990 192 42 2 : tunables 0 0 0
During test:
MemFree: 29417608 kB
Slab: 247712 kB
ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0
xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0
ip_dst_cache 44394 44394 192 42 2 : tunables 0 0 0
After test:
MemFree: 29422308 kB
Slab: 238104 kB
ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0
xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0
ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0
Ipv6 with patch:
Errno 101 errors are not observed anymore with the patch.
Before test:
MemFree: 29422308 kB
Slab: 238104 kB
ip6_dst_cache 1912 2528 256 32 2 : tunables 0 0 0
xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0
ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0
During Test:
MemFree: 29431516 kB
Slab: 240940 kB
ip6_dst_cache 11980 12064 256 32 2 : tunables 0 0 0
xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0
ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0
After Test:
MemFree: 29441816 kB
Slab: 238132 kB
ip6_dst_cache 1902 2432 256 32 2 : tunables 0 0 0
xfrm_dst_cache 0 0 320 25 2 : tunables 0 0 0
ip_dst_cache 3048 4116 192 42 2 : tunables 0 0 0
Tested-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230112012532.311021-1-jmaxwell37@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Suraj Jitindar Singh <surajjs@amazon.com>
Cc: <stable@vger.kernel.org> # 5.4.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
2024-01-15 18:25:29 +01:00 |
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9p
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bluetooth
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Bluetooth: hci_sock: Correctly bounds check and pad HCI_MON_NEW_INDEX name
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2023-10-25 11:53:25 +02:00 |
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caif
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net: caif: add proper error handling
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2021-06-10 13:37:09 +02:00 |
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iucv
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netfilter
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netfilter: nf_tables: fix table flag updates
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2023-11-28 16:50:23 +00:00 |
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netns
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ipv6: make ip6_rt_gc_expire an atomic_t
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2024-01-15 18:25:29 +01:00 |
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nfc
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nfc: constify several pointers to u8, char and sk_buff
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2023-07-27 08:37:07 +02:00 |
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phonet
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sctp
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sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop
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2023-03-11 16:44:11 +01:00 |
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tc_act
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net/sched: act_pedit: really ensure the skb is writable
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2022-05-18 09:47:25 +02:00 |
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6lowpan.h
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act_api.h
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net: sched: fix police ext initialization
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2021-03-04 10:26:53 +01:00 |
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addrconf.h
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net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
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2023-12-20 15:41:13 +01:00 |
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af_ieee802154.h
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af_rxrpc.h
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rxrpc: Make rxrpc_kernel_get_srtt() indicate validity
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2020-09-09 19:12:23 +02:00 |
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af_unix.h
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af_vsock.h
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ah.h
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arp.h
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ipv4: Invalidate neighbour for broadcast address upon address addition
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2022-04-15 14:18:33 +02:00 |
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atmclip.h
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ax25.h
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ax25: fix reference count leaks of ax25_dev
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2022-04-20 09:19:39 +02:00 |
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ax88796.h
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bond_3ad.h
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bonding: fix data-races around agg_select_timer
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2022-02-23 11:59:58 +01:00 |
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bond_alb.h
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bonding (gcc13): synchronize bond_{a,t}lb_xmit() types
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2023-06-14 10:59:58 +02:00 |
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bond_options.h
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bonding.h
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bonding: fix macvlan over alb bond support
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2023-08-30 16:27:24 +02:00 |
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bpf_sk_storage.h
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bpf: support cloning sk storage on accept()
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2019-08-17 23:18:54 +02:00 |
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busy_poll.h
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net: Fix a data-race around sysctl_net_busy_poll.
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2022-09-05 10:27:42 +02:00 |
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calipso.h
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cfg80211-wext.h
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cfg80211.h
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wifi: cfg80211: fix sband iftype data lookup for AP_VLAN
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2023-08-16 18:19:24 +02:00 |
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cfg802154.h
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checksum.h
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net: Force inlining of checksum functions in net/checksum.h
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2022-03-02 11:41:08 +01:00 |
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cipso_ipv4.h
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cls_cgroup.h
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codel.h
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codel_impl.h
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codel_qdisc.h
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compat.h
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datalink.h
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dcbevent.h
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dcbnl.h
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devlink.h
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devlink: disallow reload operation during device cleanup
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2019-11-09 19:38:36 -08:00 |
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drop_monitor.h
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net: drop_monitor: use IS_REACHABLE() to guard net_dm_hw_report()
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2020-05-27 17:46:24 +02:00 |
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dsa.h
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net: dsa: Pass ndo_setup_tc slave callback to drivers
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2019-09-16 21:32:57 +02:00 |
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dsfield.h
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dst.h
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net: Remove unused inline function dst_hold_and_use()
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2023-06-21 15:44:12 +02:00 |
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dst_cache.h
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dst_metadata.h
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net: fix a memleak when uncloning an skb dst and its metadata
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2022-02-16 12:52:51 +01:00 |
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dst_ops.h
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ipv6: remove max_size check inline with ipv4
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2024-01-15 18:25:29 +01:00 |
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erspan.h
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esp.h
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esp: limit skb_page_frag_refill use to a single page
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2022-07-12 16:30:45 +02:00 |
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ethoc.h
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failover.h
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fib_notifier.h
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fib_rules.h
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ipv6: fix memory leak in fib6_rule_suppress
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2021-12-08 09:01:13 +01:00 |
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firewire.h
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flow.h
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inet: shrink struct flowi_common
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2023-11-20 10:30:15 +01:00 |
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flow_dissector.h
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net/sched: flower: fix parsing of ethertype following VLAN header
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2022-04-20 09:19:34 +02:00 |
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flow_offload.h
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net: core: rename indirect block ingress cb function
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2019-12-18 16:08:47 +01:00 |
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fou.h
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fq.h
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net/flow_dissector: switch to siphash
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2019-10-23 20:13:22 -07:00 |
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fq_impl.h
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net/fq_impl: Switch to kvmalloc() for memory allocation
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2019-11-08 09:11:49 +01:00 |
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garp.h
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gen_stats.h
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genetlink.h
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drop_monitor: Require 'CAP_SYS_ADMIN' when joining "events" group
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2023-12-13 18:18:17 +01:00 |
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geneve.h
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gre.h
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gro_cells.h
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gtp.h
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gue.h
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hwbm.h
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net: hwbm: if CONFIG_NET_HWBM unset, make stub functions static
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2019-10-25 16:24:32 -07:00 |
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icmp.h
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net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
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2021-03-04 10:26:53 +01:00 |
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ieee80211_radiotap.h
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ieee802154_netdev.h
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net: ieee802154: return -EINVAL for unknown addr type
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2022-10-26 13:22:59 +02:00 |
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if_inet6.h
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net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
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2023-12-20 15:41:13 +01:00 |
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ife.h
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ila.h
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inet6_connection_sock.h
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inet6_hashtables.h
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inet_common.h
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inet_connection_sock.h
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tcp: relookup sock for RST+ACK packets handled by obsolete req sock
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2021-03-30 14:35:26 +02:00 |
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inet_ecn.h
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inet_ecn: Fix endianness of checksum update when setting ECT(1)
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2020-12-08 10:40:25 +01:00 |
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inet_frag.h
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inet: frags: annotate races around fqdir->dead and fqdir->high_thresh
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2022-01-27 09:19:54 +01:00 |
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inet_hashtables.h
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secure_seq: use the 64 bits of the siphash for port offset calculation
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2022-06-06 08:33:49 +02:00 |
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inet_sock.h
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tcp/dccp: Fix a data-race around sysctl_tcp_fwmark_accept.
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2022-07-29 17:14:11 +02:00 |
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inet_timewait_sock.h
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tcp: honor SO_PRIORITY in TIME_WAIT state
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2019-09-27 12:05:02 +02:00 |
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inetpeer.h
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ip.h
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ipv{4,6}/raw: fix output xfrm lookup wrt protocol
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2023-06-05 08:17:33 +02:00 |
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ip6_checksum.h
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ip6_fib.h
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ipv6: annotate accesses to fn->fn_sernum
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2022-02-01 17:24:38 +01:00 |
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ip6_route.h
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net: ipv6: fix returned variable type in ip6_skb_dst_mtu
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2021-08-12 13:20:57 +02:00 |
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ip6_tunnel.h
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ip_gre, ip6_gre: Fix race condition on o_seqno in collect_md mode
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2023-05-30 12:44:05 +01:00 |
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ip_fib.h
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ipv4: convert fib_num_tclassid_users to atomic_t
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2021-12-08 09:01:12 +01:00 |
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ip_tunnels.h
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ip_tunnels: use DEV_STATS_INC()
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2023-09-23 10:59:59 +02:00 |
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ip_vs.h
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ipvs: allow connection reuse for unconfirmed conntrack
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2020-08-19 08:16:10 +02:00 |
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ipcomp.h
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ipconfig.h
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ipv6.h
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tcp: Reduce chance of collisions in inet6_hashfn().
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2023-08-11 11:53:47 +02:00 |
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ipv6_frag.h
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inet: frags: annotate races around fqdir->dead and fqdir->high_thresh
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2022-01-27 09:19:54 +01:00 |
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ipv6_stubs.h
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net: ipv6: add fib6_nh_release_dsts stub
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2021-12-01 09:23:33 +01:00 |
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ipx.h
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bonding/alb: properly access headers in bond_alb_xmit()
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2020-02-11 04:35:48 -08:00 |
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iw_handler.h
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kcm.h
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l3mdev.h
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lag.h
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lapb.h
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lib80211.h
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llc.h
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llc: fix out-of-bound array index in llc_sk_dev_hash()
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2021-11-17 09:48:47 +01:00 |
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llc_c_ac.h
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llc_c_ev.h
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llc_c_st.h
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llc_conn.h
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llc: fix sk_buff leak in llc_conn_service()
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2019-10-08 13:23:05 -07:00 |
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llc_if.h
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llc_pdu.h
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net: llc: fix skb_over_panic
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2021-08-04 12:27:39 +02:00 |
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llc_s_ac.h
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llc_s_ev.h
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llc_s_st.h
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llc_sap.h
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lwtunnel.h
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lwt: Check LWTUNNEL_XMIT_CONTINUE strictly
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2023-09-23 10:59:42 +02:00 |
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mac80211.h
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mac80211: populate debugfs only after cfg80211 init
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2020-04-29 16:33:18 +02:00 |
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mac802154.h
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mip6.h
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mld.h
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mpls.h
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mpls_iptunnel.h
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mrp.h
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mrp: introduce active flags to prevent UAF when applicant uninit
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2023-01-18 11:41:37 +01:00 |
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ncsi.h
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ndisc.h
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net: avoid potential false sharing in neighbor related code
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2019-12-31 16:45:03 +01:00 |
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neighbour.h
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neighbour: delete neigh_lookup_nodev as not used
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2023-06-21 15:44:12 +02:00 |
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net_failover.h
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net_namespace.h
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net: make get_net_ns return error if NET_NS is disabled
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2021-06-23 14:41:25 +02:00 |
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net_ratelimit.h
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netevent.h
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netlabel.h
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netlink.h
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netlink: Fix nlmsg_parse as a wrapper for strict message parsing
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2019-08-13 20:37:16 -07:00 |
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netprio_cgroup.h
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netrom.h
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nexthop.h
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net: ipv4: Fix rtnexthop len when RTA_FLOW is present
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2021-10-06 15:42:33 +02:00 |
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nl802154.h
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net: ieee802154: handle iftypes as u32
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2021-12-01 09:23:32 +01:00 |
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nsh.h
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p8022.h
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page_pool.h
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mm: fix struct page layout on 32-bit systems
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2021-05-19 10:08:31 +02:00 |
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ping.h
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pkt_cls.h
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net_sched: fix ops->bind_class() implementations
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2020-02-01 09:34:38 +00:00 |
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pkt_sched.h
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net/sched: make psched_mtu() RTNL-less safe
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2023-07-27 08:37:33 +02:00 |
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pptp.h
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protocol.h
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tcp/udp: Make early_demux back namespacified.
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2022-11-10 17:57:55 +01:00 |
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psample.h
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psample: Add a fwd declaration for skbuff
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2021-08-18 08:56:59 +02:00 |
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psnap.h
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raw.h
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raw: Fix a data-race around sysctl_raw_l3mdev_accept.
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2022-07-21 20:59:22 +02:00 |
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rawv6.h
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red.h
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sch_red: fix off-by-one checks in red_check_params()
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2021-04-14 08:24:14 +02:00 |
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regulatory.h
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request_sock.h
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net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head
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2019-10-09 21:34:31 -07:00 |
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rose.h
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route.h
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ipv4: remove sparse error in ip_neigh_gw4()
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2022-02-01 17:24:39 +01:00 |
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rsi_91x.h
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rtnetlink.h
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net: validate veth and vxcan peer ifindexes
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2023-08-30 16:27:24 +02:00 |
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rtnh.h
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sch_generic.h
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net/sched: sch_taprio: fix possible use-after-free
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2023-02-06 07:52:37 +01:00 |
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scm.h
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scm: fix MSG_CTRUNC setting condition for SO_PASSSEC
|
2023-05-17 11:35:41 +02:00 |
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secure_seq.h
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secure_seq: use the 64 bits of the siphash for port offset calculation
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2022-06-06 08:33:49 +02:00 |
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seg6.h
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seg6_hmac.h
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seg6_local.h
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slhc_vj.h
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smc.h
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snmp.h
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sock.h
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net: annotate data-races around sk->sk_dst_pending_confirm
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2023-11-28 16:50:14 +00:00 |
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sock_reuseport.h
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udp: correct reuseport selection with connected sockets
|
2019-09-16 09:02:18 +02:00 |
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Space.h
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stp.h
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strparser.h
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bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding
|
2021-11-17 09:48:48 +01:00 |
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switchdev.h
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tcp.h
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tcp: fix cookie_init_timestamp() overflows
|
2023-11-20 10:30:10 +01:00 |
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tcp_states.h
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timewait_sock.h
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tipc.h
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tls.h
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net/tls: Fix flipped sign in tls_err_abort() calls
|
2021-11-02 19:46:12 +01:00 |
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transp_v6.h
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tso.h
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tun_proto.h
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udp.h
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tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
|
2023-04-26 11:24:05 +02:00 |
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udp_tunnel.h
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udp: call udp_encap_enable for v6 sockets when enabling encap
|
2022-04-15 14:18:01 +02:00 |
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udplite.h
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tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
|
2023-04-26 11:24:05 +02:00 |
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vsock_addr.h
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vxlan.h
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vxlan: calculate correct header length for GPE
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2023-08-11 11:53:47 +02:00 |
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wext.h
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wimax.h
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x25.h
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x25device.h
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xdp.h
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xdp_priv.h
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page_pool: do not release pool until inflight == 0.
|
2019-12-18 16:09:07 +01:00 |
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xdp_sock.h
|
xsk: add support to allow unaligned chunk placement
|
2019-08-31 01:08:26 +02:00 |
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xfrm.h
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xfrm: Check if_id in xfrm_migrate
|
2022-03-19 13:40:16 +01:00 |