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linux/include/net
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Eric Dumazet 6a17b961ec ipv6: do not use per netns icmp sockets 
Back in linux-2.6.25 (commit 98c6d1b261 "[NETNS]: Make icmpv6_sk per namespace.",
we added private per-cpu/per-netns ipv6 icmp sockets.

This adds memory and cpu costs, which do not seem needed.
Now typical servers have 256 or more cores, this adds considerable
tax to netns users.

icmp sockets are used from BH context, are not receiving packets,
and do not store any persistent state but the 'struct net' pointer.

icmpv6_xmit_lock() already makes sure to lock the chosen per-cpu
socket.

This patch has a considerable impact on the number of netns
that the worker thread in cleanup_net() can dismantle per second,
because ip6mr_sk_done() is no longer called, meaning we no longer
acquire the rtnl mutex, competing with other threads adding new netns.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-25 11:25:21 +00:00
..
9p net/p9: load default transports 2022-01-10 10:00:09 +09:00
bluetooth Bluetooth: hci_event: Rework hci_inquiry_result_with_rssi_evt 2022-01-06 14:57:09 +01:00
caif net: remove the caif_hsi driver 2021-07-01 13:19:48 -07:00
iucv net/af_iucv: Use struct_group() to zero struct iucv_sock region 2021-11-19 11:52:25 +00:00
netfilter net/netfilter: Add unstable CT lookup helpers for XDP and TC-BPF 2022-01-18 14:26:42 -08:00
netns ipv6: do not use per netns icmp sockets 2022-01-25 11:25:21 +00:00
nfc NFC: add NCI_UNREG flag to eliminate the race 2021-11-17 20:17:05 -08:00
phonet
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-05 14:36:10 -08:00
tc_act flow_offload: add index to flow_action_entry structure 2021-12-19 14:08:47 +00:00
6lowpan.h
act_api.h flow_offload: validate flags of filter and actions 2021-12-19 14:08:48 +00:00
addrconf.h net: bridge: mcast: fix broken length + header check for MRDv6 Adv. 2021-04-27 14:02:06 -07:00
af_ieee802154.h
af_rxrpc.h afs: Don't truncate iter during data fetch 2021-04-23 10:17:26 +01:00
af_unix.h af_unix: Replace the big lock with small locks. 2021-11-26 18:01:58 -08:00
af_vsock.h af_vsock: rest of SEQPACKET support 2021-06-11 13:32:46 -07:00
ah.h
amt.h amt: add mld report message handler 2021-11-01 13:36:09 +00:00
arp.h neigh: introduce neigh_confirm() helper function 2021-11-23 11:51:37 +00:00
atmclip.h
ax25.h ax25: add net device refcount tracker 2021-12-07 20:44:59 -08:00
ax88796.h ax88796: export ax_NS8390_init() hook 2021-08-03 13:05:25 +01:00
bareudp.h bareudp: Move definition of struct bareudp_conf to bareudp.c 2021-12-13 12:34:09 +00:00
bond_3ad.h bonding: add new option lacp_active 2021-08-03 11:50:22 +01:00
bond_alb.h bonding: make tx_rebalance_counter an atomic 2021-12-03 14:16:48 +00:00
bond_options.h Bonding: add arp_missed_max option 2021-11-30 12:15:58 +00:00
bonding.h bonding: use rcu_dereference_rtnl when get bonding active slave 2022-01-24 11:57:38 +00:00
bpf_sk_storage.h bpf: struct sock is declared twice in bpf_sk_storage header 2021-03-26 17:43:55 +01:00
busy_poll.h tcp: fix another uninit-value (sk_rx_queue_mapping) 2021-12-03 14:15:49 +00:00
calipso.h
cfg80211-wext.h
cfg80211.h nl80211: Add support to set AP settings flags with single attribute 2021-12-20 10:41:26 +01:00
cfg802154.h
checksum.h net: fix recent csum changes 2021-12-06 16:26:46 -08:00
cipso_ipv4.h cipso: Remove unused inline functions 2020-07-15 07:45:24 -07:00
cls_cgroup.h
codel.h codel: remove unnecessary pkt_sched.h include 2021-12-22 15:03:51 -08:00
codel_impl.h codel: remove unnecessary sock.h include 2021-12-22 15:03:47 -08:00
codel_qdisc.h codel: remove unnecessary pkt_sched.h include 2021-12-22 15:03:51 -08:00
compat.h net/ipv4/ipv6: Replace one-element arraya with flexible-array members 2021-08-05 11:46:42 +01:00
datalink.h llc/snap: constify dev_addr passing 2021-10-13 09:40:46 -07:00
dcbevent.h
dcbnl.h
devlink.h devlink: Add new "event_eq_size" generic device param 2021-12-21 19:08:54 -08:00
dn.h decnet: constify dev_addr passing 2021-10-13 09:40:46 -07:00
dn_dev.h
dn_fib.h net: convert fib_treeref from int to refcount_t 2021-07-30 15:33:24 +02:00
dn_neigh.h
dn_nsp.h
dn_route.h
dsa.h net: dsa: warn about dsa_port and dsa_switch bit fields being non atomic 2022-01-06 12:16:21 +00:00
dsfield.h
dst.h net: dst: add net device refcount tracking to dst_entry 2021-12-06 16:05:10 -08:00
dst_cache.h wireguard: device: reset peer src endpoint when netns exits 2021-11-29 19:50:45 -08:00
dst_metadata.h net: validate lwtstate->data before returning from skb_tunnel_info() 2021-07-09 13:55:53 -07:00
dst_ops.h
erspan.h
esp.h
espintcp.h
ethoc.h
failover.h net: failover: add net device refcount tracker 2021-12-06 16:06:02 -08:00
fib_notifier.h
fib_rules.h fib: expand fib_rule_policy 2021-12-16 07:18:35 -08:00
firewire.h
flow.h flow: fix object-size-mismatch warning in flowi{4,6}_to_flowi_common() 2021-09-02 11:44:19 +01:00
flow_dissector.h cls_flower: Fix inability to match GRE/IPIP packets 2021-10-29 14:03:22 +01:00
flow_offload.h flow_offload: allow user to offload tc action to net device 2021-12-19 14:08:48 +00:00
fou.h
fq.h net/fq_impl: do not maintain a backlog-sorted list of flows 2021-01-21 13:33:45 +01:00
fq_impl.h net/fq_impl: do not maintain a backlog-sorted list of flows 2021-01-21 13:33:45 +01:00
garp.h
gen_stats.h net: sched: Remove Qdisc::running sequence counter 2021-10-18 12:54:41 +01:00
genetlink.h mptcp: avoid lock_fast usage in accept path 2021-02-12 16:31:46 -08:00
geneve.h
gre.h ip_gre: add csum offload support for gre header 2021-01-29 20:39:14 -08:00
gro.h net: fix recent csum changes 2021-12-06 16:26:46 -08:00
gro_cells.h
gtp.h
gue.h
hwbm.h
icmp.h ipv6: ICMPV6: add response to ICMPV6 RFC 8335 PROBE messages 2021-06-28 14:29:45 -07:00
ieee80211_radiotap.h mac80211: Use flex-array for radiotap header bitmap 2021-08-13 09:58:25 +02:00
ieee802154_netdev.h
if_inet6.h ipv6: add net device refcount tracker to struct inet6_dev 2021-12-06 16:05:11 -08:00
ife.h
ila.h
inet6_connection_sock.h
inet6_hashtables.h
inet_common.h bpf: Allow rewriting to ports under ip_unprivileged_port_start 2021-01-27 18:18:15 -08:00
inet_connection_sock.h dccp/tcp: Remove an unused argument in inet_csk_listen_start(). 2021-11-23 20:16:18 -08:00
inet_ecn.h net: add skb_get_dsfield() helper 2021-10-15 11:33:08 +01:00
inet_frag.h inet: frags: annotate races around fqdir->dead and fqdir->high_thresh 2022-01-13 13:06:05 +00:00
inet_hashtables.h tcp: seq_file: Replace listening_hash with lhash2 2021-07-23 16:44:57 -07:00
inet_sock.h ipv4/raw: support binding to nonlocal addresses 2021-11-17 20:21:52 -08:00
inet_timewait_sock.h tcp/dccp: get rid of inet_twsk_purge() 2022-01-25 11:25:21 +00:00
inetpeer.h
ioam6.h ipv6: ioam: Distinguish input and output for hop-limit 2021-10-04 12:53:35 +01:00
ip.h ipv4: Exposing __ip_sock_set_tos() in ip.h 2021-11-20 14:11:00 +00:00
ip6_checksum.h net: move gro definitions to include/net/gro.h 2021-11-16 13:16:54 +00:00
ip6_fib.h ipv6: annotate accesses to fn->fn_sernum 2022-01-20 20:18:37 -08:00
ip6_route.h ipv6: ip6_skb_dst_mtu() cleanups 2021-11-19 20:09:55 -08:00
ip6_tunnel.h ipv6: add net device refcount tracker to struct ip6_tnl 2021-12-06 16:05:11 -08:00
ip_fib.h inet: add net device refcount tracker to struct fib_nh_common 2021-12-07 20:44:59 -08:00
ip_tunnels.h sit: add net device refcount tracking to ip_tunnel 2021-12-06 16:05:11 -08:00
ip_vs.h ipvs: add sysctl_run_estimation to support disable estimation 2021-10-07 19:52:58 +02:00
ipcomp.h
ipconfig.h
ipv6.h net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
ipv6_frag.h inet: frags: annotate races around fqdir->dead and fqdir->high_thresh 2022-01-13 13:06:05 +00:00
ipv6_stubs.h net: ipv6: add fib6_nh_release_dsts stub 2021-11-22 15:44:49 +00:00
iw_handler.h
kcm.h
l3mdev.h
lag.h
lapb.h net: lapb: Make "lapb_t1timer_running" able to detect an already running timer 2021-03-23 14:14:50 -07:00
lib80211.h
llc.h llc: fix out-of-bound array index in llc_sk_dev_hash() 2021-11-07 19:25:29 +00:00
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h llc: add net device refcount tracker 2021-12-07 20:44:59 -08:00
llc_if.h llc/snap: constify dev_addr passing 2021-10-13 09:40:46 -07:00
llc_pdu.h net: llc: fix skb_over_panic 2021-07-27 13:05:56 +01:00
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
lwtunnel.h netfilter: add netfilter hooks to SRv6 data plane 2021-08-30 01:51:36 +02:00
mac80211.h mac80211: Add stations iterator where the iterator function may sleep 2022-01-04 15:47:15 +01:00
mac802154.h
macsec.h net: macsec: fix the length used to copy the key for offloading 2021-06-24 12:41:12 -07:00
mctp.h mctp: Pass flow data & flow release events to drivers 2021-10-29 13:23:51 +01:00
mctpdevice.h mctp: Pass flow data & flow release events to drivers 2021-10-29 13:23:51 +01:00
mip6.h
mld.h mld: add new workqueues for process mld events 2021-03-26 15:14:56 -07:00
mpls.h
mpls_iptunnel.h
mptcp.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-28 10:43:58 -07:00
mrp.h
ncsi.h
ndisc.h neigh: introduce neigh_confirm() helper function 2021-11-23 11:51:37 +00:00
neighbour.h net: add net device refcount tracker to struct neigh_parms 2021-12-06 16:05:11 -08:00
net_failover.h
net_namespace.h net: add networking namespace refcount tracker 2021-12-10 06:38:26 -08:00
net_ratelimit.h
net_trackers.h net: add networking namespace refcount tracker 2021-12-10 06:38:26 -08:00
netevent.h
netlabel.h
netlink.h net: netlink: add the case when nlh is NULL 2021-07-27 11:43:50 +01:00
netprio_cgroup.h
netrom.h
nexthop.h net: ipv4: Fix rtnexthop len when RTA_FLOW is present 2021-09-24 14:07:10 +01:00
nl802154.h net: ieee802154: handle iftypes as u32 2021-11-16 18:02:46 +01:00
nsh.h
p8022.h
page_pool.h page_pool: Store the XDP mem id 2022-01-05 19:46:32 -08:00
pie.h
ping.h
pkt_cls.h net: sched: do not allocate a tracker in tcf_exts_init() 2022-01-11 20:40:16 -08:00
pkt_sched.h net: openvswitch: Fix ct_state nat flags for conns arriving from tc 2022-01-09 16:24:12 -08:00
pptp.h
protocol.h net: Remove the member netns_ok 2021-05-17 15:29:35 -07:00
psample.h psample: Add a fwd declaration for skbuff 2021-08-09 15:34:21 -07:00
psnap.h
raw.h
rawv6.h
red.h sch_red: fix off-by-one checks in red_check_params() 2021-03-25 17:40:43 -07:00
regulatory.h net/wireless: regulatory.h: drop duplicate word in comment 2020-07-31 09:24:23 +02:00
request_sock.h tcp: bpf: Optionally store mac header in TCP_SAVE_SYN 2020-08-24 14:35:00 -07:00
rose.h rose: constify dev_addr passing 2021-10-13 09:40:45 -07:00
route.h net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
rpl.h
rsi_91x.h
rtnetlink.h net: add extack arg for link ops 2021-08-04 10:01:26 +01:00
rtnh.h
sch_generic.h net_sched: restore "mpu xxx" handling 2022-01-13 11:06:42 -08:00
scm.h
secure_seq.h
seg6.h udp6: Use Segment Routing Header for dest address if present 2022-01-04 12:17:35 +00:00
seg6_hmac.h
seg6_local.h
selftests.h net: selftest: fix build issue if INET is disabled 2021-04-28 14:06:45 -07:00
slhc_vj.h
smc.h net/smc: introduce CHID callback for ISM devices 2020-09-28 15:19:03 -07:00
snmp.h
sock.h net: bpf: Handle return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND() 2022-01-06 17:08:35 -08:00
sock_reuseport.h tcp: Add reuseport_migrate_sock() to select a new listener. 2021-06-15 18:01:05 +02:00
Space.h wan: remove sbni/granch driver 2021-08-03 13:05:26 +01:00
stp.h
strparser.h bpf, sockmap: sk_skb data_end access incorrect when src_reg = dst_reg 2021-11-09 01:05:34 +01:00
switchdev.h net: switchdev: merge switchdev_handle_fdb_{add,del}_to_device 2021-10-27 14:54:02 +01:00
tcp.h tcp: Add a stub for sk_defer_free_flush() 2022-01-20 20:17:32 -08:00
tcp_states.h
timewait_sock.h
tipc.h
tls.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-28 10:43:58 -07:00
tls_toe.h
transp_v6.h
tso.h
tun_proto.h
udp.h net: move gro definitions to include/net/gro.h 2021-11-16 13:16:54 +00:00
udp_tunnel.h udp: call udp_encap_enable for v6 sockets when enabling encap 2021-02-04 18:37:14 -08:00
udplite.h
vsock_addr.h
vxlan.h net: vxlan: add macro definition for number of IANA VXLAN-GPE port 2021-11-29 12:19:53 +00:00
wext.h
x25.h
x25device.h
xdp.h bpf: add frags support to the bpf_xdp_adjust_tail() API 2022-01-21 14:14:02 -08:00
xdp_priv.h xsk: Wipe out dead zero_copy_allocator declarations 2021-12-14 00:24:24 +01:00
xdp_sock.h net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
xdp_sock_drv.h xsk: Batched buffer allocation for the pool 2021-09-28 00:18:34 +02:00
xfrm.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-09 17:00:17 -08:00
xsk_buff_pool.h xsk: Optimize for aligned case 2021-09-28 00:18:35 +02:00