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Date: Wed, 10 Oct 2018 12:29:48 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, gregkh@...uxfoundation.org,
stable@...r.kernel.org, edumazet@...gle.com,
sthemmin@...rosoft.com, Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH stable 4.9 v2 00/29] backport of IP fragmentation fixes
This is based on Stephen's v4.14 patches, with the necessary merge
conflicts, and the lack of timer_setup() on the 4.9 baseline.
Perf results on a gigabit capable system, before and after are below.
Series can also be found here:
https://github.com/ffainelli/linux/commits/fragment-stack-v4.9-v2
Changes in v2:
- drop "net: sk_buff rbnode reorg"
- added original "ip: use rb trees for IP frag queue." commit
Before patches:
PerfTop: 180 irqs/sec kernel:78.9% exact: 0.0% [4000Hz cycles:ppp], (all, 4 CPUs)
-------------------------------------------------------------------------------
34.81% [kernel] [k] ip_defrag
4.57% [kernel] [k] arch_cpu_idle
2.09% [kernel] [k] fib_table_lookup
1.74% [kernel] [k] finish_task_switch
1.57% [kernel] [k] v7_dma_inv_range
1.47% [kernel] [k] __netif_receive_skb_core
1.06% [kernel] [k] __slab_free
1.04% [kernel] [k] __netdev_alloc_skb
0.99% [kernel] [k] ip_route_input_noref
0.96% [kernel] [k] dev_gro_receive
0.96% [kernel] [k] tick_nohz_idle_enter
0.93% [kernel] [k] bcm_sysport_poll
0.92% [kernel] [k] skb_release_data
0.91% [kernel] [k] __memzero
0.90% [kernel] [k] __free_page_frag
0.87% [kernel] [k] ip_rcv
0.77% [kernel] [k] eth_type_trans
0.71% [kernel] [k] _raw_spin_unlock_irqrestore
0.68% [kernel] [k] tick_nohz_idle_exit
0.65% [kernel] [k] bcm_sysport_rx_refill
After patches:
PerfTop: 214 irqs/sec kernel:80.4% exact: 0.0% [4000Hz cycles:ppp], (all, 4 CPUs)
-------------------------------------------------------------------------------
6.61% [kernel] [k] arch_cpu_idle
3.77% [kernel] [k] ip_defrag
3.65% [kernel] [k] v7_dma_inv_range
3.18% [kernel] [k] fib_table_lookup
3.04% [kernel] [k] __netif_receive_skb_core
2.31% [kernel] [k] finish_task_switch
2.31% [kernel] [k] _raw_spin_unlock_irqrestore
1.65% [kernel] [k] bcm_sysport_poll
1.63% [kernel] [k] ip_route_input_noref
1.63% [kernel] [k] __memzero
1.58% [kernel] [k] __netdev_alloc_skb
1.47% [kernel] [k] tick_nohz_idle_enter
1.40% [kernel] [k] __slab_free
1.32% [kernel] [k] ip_rcv
1.32% [kernel] [k] __softirqentry_text_start
1.30% [kernel] [k] dev_gro_receive
1.23% [kernel] [k] bcm_sysport_rx_refill
1.11% [kernel] [k] tick_nohz_idle_exit
1.06% [kernel] [k] memcmp
1.02% [kernel] [k] dma_cache_maint_page
Dan Carpenter (1):
ipv4: frags: precedence bug in ip_expire()
Eric Dumazet (21):
inet: frags: change inet_frags_init_net() return value
inet: frags: add a pointer to struct netns_frags
inet: frags: refactor ipfrag_init()
inet: frags: refactor ipv6_frag_init()
inet: frags: refactor lowpan_net_frag_init()
ipv6: export ip6 fragments sysctl to unprivileged users
rhashtable: add schedule points
inet: frags: use rhashtables for reassembly units
inet: frags: remove some helpers
inet: frags: get rif of inet_frag_evicting()
inet: frags: remove inet_frag_maybe_warn_overflow()
inet: frags: break the 2GB limit for frags storage
inet: frags: do not clone skb in ip_expire()
ipv6: frags: rewrite ip6_expire_frag_queue()
rhashtable: reorganize struct rhashtable layout
inet: frags: reorganize struct netns_frags
inet: frags: get rid of ipfrag_skb_cb/FRAG_CB
inet: frags: fix ip6frag_low_thresh boundary
net: speed up skb_rbtree_purge()
net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends
net: add rb_to_skb() and other rb tree helpers
Florian Westphal (1):
ipv6: defrag: drop non-last frags smaller than min mtu
Peter Oskolkov (5):
ip: discard IPv4 datagrams with overlapping segments.
net: modify skb_rbtree_purge to return the truesize of all purged
skbs.
ip: use rb trees for IP frag queue.
ip: add helpers to process in-order fragments faster.
ip: process in-order fragments efficiently
Taehee Yoo (1):
ip: frags: fix crash in ip_do_fragment()
Documentation/networking/ip-sysctl.txt | 13 +-
include/linux/rhashtable.h | 4 +-
include/linux/skbuff.h | 34 +-
include/net/inet_frag.h | 133 +++---
include/net/ip.h | 1 -
include/net/ipv6.h | 26 +-
include/uapi/linux/snmp.h | 1 +
lib/rhashtable.c | 5 +-
net/core/skbuff.c | 31 +-
net/ieee802154/6lowpan/6lowpan_i.h | 26 +-
net/ieee802154/6lowpan/reassembly.c | 148 +++---
net/ipv4/inet_fragment.c | 379 ++++------------
net/ipv4/ip_fragment.c | 573 +++++++++++++-----------
net/ipv4/proc.c | 7 +-
net/ipv4/tcp_input.c | 33 +-
net/ipv6/netfilter/nf_conntrack_reasm.c | 100 ++---
net/ipv6/proc.c | 5 +-
net/ipv6/reassembly.c | 212 ++++-----
18 files changed, 774 insertions(+), 957 deletions(-)
--
2.17.1
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