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linux-next/net/ipv6
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Eric Dumazet 0daf07e527 raw: convert raw sockets to RCU 
Using rwlock in networking code is extremely risky.
writers can starve if enough readers are constantly
grabing the rwlock.

I thought rwlock were at fault and sent this patch:

https://lkml.org/lkml/2022/6/17/272

But Peter and Linus essentially told me rwlock had to be unfair.

We need to get rid of rwlock in networking code.

Without this fix, following script triggers soft lockups:

for i in {1..48}
do
 ping -f -n -q 127.0.0.1 &
 sleep 0.1
done

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-06-19 10:00:02 +01:00
..
ila
net: ipv6: check return value of rhashtable_init
2021-09-28 12:59:24 +01:00
netfilter
netfilter: conntrack: skip verification of zero UDP checksum
2022-05-13 18:56:28 +02:00
addrconf_core.c
net: rename reference+tracking helpers
2022-06-09 21:52:55 -07:00
addrconf.c
net: rename reference+tracking helpers
2022-06-09 21:52:55 -07:00
addrlabel.c
ipv6: addrlabel: fix possible memory leak in ip6addrlbl_net_init
2020-11-25 11:20:16 -08:00
af_inet6.c
raw: convert raw sockets to RCU
2022-06-19 10:00:02 +01:00
ah6.c
ipv6: ah6: use swap() to make code cleaner
2021-11-18 12:00:15 +00:00
anycast.c
ipv6: fix memory leaks on IPV6_ADDRFORM path
2020-07-30 16:30:55 -07:00
calipso.c
cipso,calipso: resolve a number of problems with the DOI refcounts
2021-03-04 15:26:57 -08:00
datagram.c
net: annotate races around sk->sk_bound_dev_if
2022-05-16 10:31:05 +01:00
esp6_offload.c
net: Fix esp GSO on inter address family tunnels.
2022-03-07 13:14:04 +01:00
esp6.c
xfrm: free not used XFRM_ESP_NO_TRAILER flag
2022-05-06 08:24:20 +02:00
exthdrs_core.c
ipv6: remove printk
2019-07-27 14:23:48 -07:00
exthdrs_offload.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
exthdrs.c
net: ipv6: add skb drop reasons to TLV parse
2022-04-13 13:09:57 +01:00
fib6_notifier.c
net: fib_notifier: propagate extack down to the notifier block callback
2019-10-04 11:10:56 -07:00
fib6_rules.c
ipv6: change fib6_rules_net_exit() to batch mode
2022-02-08 20:41:34 -08:00
fou6.c
net: Add MODULE_DESCRIPTION entries to network modules
2020-06-20 21:33:57 -07:00
icmp.c
net: icmp: introduce function icmpv6_param_prob_reason()
2022-04-13 13:09:57 +01:00
inet6_connection_sock.c
lsm,selinux: pass flowi_common instead of flowi to the LSM hooks
2020-11-23 18:36:21 -05:00
inet6_hashtables.c
ipv6: add READ_ONCE(sk->sk_bound_dev_if) in INET6_MATCH()
2022-05-16 10:31:06 +01:00
ioam6_iptunnel.c
ipv6: ioam: Insertion frequency in lwtunnel output
2022-02-04 20:24:45 -08:00
ioam6.c
net: ipv6: Get rcv timestamp if needed when handling hop-by-hop IOAM option
2022-03-03 14:38:48 +00:00
ip6_checksum.c
net: udp: fix handling of CHECKSUM_COMPLETE packets
2018-10-24 14:18:16 -07:00
ip6_fib.c
ipv6: annotate accesses to fn->fn_sernum
2022-01-20 20:18:37 -08:00
ip6_flowlabel.c
ipv6: per-netns exclusive flowlabel checks
2022-02-16 20:37:47 -08:00
ip6_gre.c
net: rename reference+tracking helpers
2022-06-09 21:52:55 -07:00
ip6_icmp.c
net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
2021-02-23 11:29:52 -08:00
ip6_input.c
ipv6: fix NULL deref in ip6_rcv_core()
2022-04-15 14:05:18 -07:00
ip6_offload.c
ipv6/gro: insert temporary HBH/jumbo header
2022-05-16 10:18:56 +01:00
ip6_offload.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ip6_output.c
ipv6: Fix signed integer overflow in __ip6_append_data
2022-06-08 10:56:43 -07:00
ip6_tunnel.c
ip6_tunnel: use dev_sw_netstats_rx_add()
2022-06-09 21:53:10 -07:00
ip6_udp_tunnel.c
net: Make locking in sock_bindtoindex optional
2020-06-01 14:57:14 -07:00
ip6_vti.c
net: rename reference+tracking helpers
2022-06-09 21:52:55 -07:00
ip6mr.c
net: rename reference+tracking helpers
2022-06-09 21:52:55 -07:00
ipcomp6.c
xfrm: remove hdr_offset indirection
2021-06-11 14:48:50 +02:00
ipv6_sockglue.c
ipv6: annotate some data-races around sk->sk_prot
2022-02-18 11:53:28 +00:00
Kconfig
ipv6: ioam: Add support for the ip6ip6 encapsulation
2021-10-04 12:53:35 +01:00
Makefile
net: ipv6: use ipv6-y directly instead of ipv6-objs
2021-09-28 13:13:40 +01:00
mcast_snoop.c
net: bridge: mcast: fix broken length + header check for MRDv6 Adv.
2021-04-27 14:02:06 -07:00
mcast.c
mld: respect RCU rules in ip6_mc_source() and ip6_mc_msfilter()
2022-04-30 15:19:08 +01:00
mip6.c
xfrm: ipv6: move mip6_rthdr_offset into xfrm core
2021-06-11 14:48:50 +02:00
ndisc.c
net/ipv6: Expand and rename accept_unsolicited_na to accept_untracked_na
2022-05-31 11:36:57 +02:00
netfilter.c
netfilter: Use l3mdev flow key when re-routing mangled packets
2022-05-16 13:03:29 +02:00
output_core.c
ipv6: use prandom_u32() for ID generation
2021-05-31 22:12:08 -07:00
ping.c
net: ping6: Fix ping -6 with interface name
2022-06-01 12:44:42 +02:00
proc.c
net: udp: introduce UDP_MIB_MEMERRORS for udp_mem
2020-11-09 15:34:44 -08:00
protocol.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
raw.c
raw: convert raw sockets to RCU
2022-06-19 10:00:02 +01:00
reassembly.c
net: ipv6: Handle delivery_time in ipv6 defrag
2022-03-03 14:38:48 +00:00
route.c
net: rename reference+tracking helpers
2022-06-09 21:52:55 -07:00
rpl_iptunnel.c
net: ipv6: rpl_iptunnel: simplify the return expression of rpl_do_srh()
2020-12-08 16:22:54 -08:00
rpl.c
net: ipv6: rpl*: Fix strange kerneldoc warnings due to bad header
2020-10-30 12:12:52 -07:00
seg6_hmac.c
net: ipv6: unexport __init-annotated seg6_hmac_init()
2022-06-08 10:10:14 -07:00
seg6_iptunnel.c
seg6: fix the iif in the IPv6 socket control block
2021-12-09 07:55:42 -08:00
seg6_local.c
net: seg6: fix seg6_lookup_any_nexthop() to handle VRFs using flowi_l3mdev
2022-06-09 22:04:47 -07:00
seg6.c
icmp: ICMPV6: Examine invoking packet for Segment Route Headers.
2022-01-04 12:17:35 +00:00
sit.c
sit: use dev_sw_netstats_rx_add()
2022-06-09 21:53:10 -07:00
syncookies.c
tcp: make sure treq->af_specific is initialized
2022-04-25 12:10:11 +01:00
sysctl_net_ipv6.c
net: sysctl: introduce sysctl SYSCTL_THREE
2022-05-03 10:15:06 +02:00
tcp_ipv6.c
net: add per_cpu_fw_alloc field to struct proto
2022-06-10 16:21:26 -07:00
tcpv6_offload.c
net: move gro definitions to include/net/gro.h
2021-11-16 13:16:54 +00:00
tunnel6.c
tunnel6: add tunnel6_input_afinfo for ipip and ipv6 tunnels
2020-07-09 12:52:37 +02:00
udp_impl.h
net: remove noblock parameter from recvmsg() entities
2022-04-12 15:00:25 +02:00
udp_offload.c
gro: remove rcu_read_lock/rcu_read_unlock from gro_receive handlers
2021-11-24 17:21:42 -08:00
udp.c
net: add per_cpu_fw_alloc field to struct proto
2022-06-10 16:21:26 -07:00
udplite.c
net: add per_cpu_fw_alloc field to struct proto
2022-06-10 16:21:26 -07:00
xfrm6_input.c
xfrm: state: remove extract_input indirection from xfrm_state_afinfo
2020-05-06 09:40:08 +02:00
xfrm6_output.c
xfrm: fix tunnel model fragmentation behavior
2022-03-01 12:08:40 +01:00
xfrm6_policy.c
net: rename reference+tracking helpers
2022-06-09 21:52:55 -07:00
xfrm6_protocol.c
xfrm: add support for UDPv6 encapsulation of ESP
2020-04-28 11:28:36 +02:00
xfrm6_state.c
xfrm: remove output_finish indirection from xfrm_state_afinfo
2020-05-06 09:40:08 +02:00
xfrm6_tunnel.c
xfrm: remove description from xfrm_type struct
2021-06-09 09:38:52 +02:00