Joanne Koong d5a42de8bd net: Add a second bind table hashed by port and address ... We currently have one tcp bind table (bhash) which hashes by port number only. In the socket bind path, we check for bind conflicts by traversing the specified port's inet_bind2_bucket while holding the bucket's spinlock (see inet_csk_get_port() and inet_csk_bind_conflict()). In instances where there are tons of sockets hashed to the same port at different addresses, checking for a bind conflict is time-intensive and can cause softirq cpu lockups, as well as stops new tcp connections since __inet_inherit_port() also contests for the spinlock. This patch proposes adding a second bind table, bhash2, that hashes by port and ip address. Searching the bhash2 table leads to significantly faster conflict resolution and less time holding the spinlock. Signed-off-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2022-05-20 18:16:24 -07:00
..
bpfilter
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next	2022-05-16 10:10:37 +01:00
af_inet.c	ipv4: Avoid using RTO_ONLINK with ip_route_connect().	2022-04-22 13:06:03 +01:00
ah4.c
arp.c	arp: fix unused variable warnning when CONFIG_PROC_FS=n	2022-04-25 11:50:18 +01:00
bpf_tcp_ca.c	bpf: reject program if a __user tagged memory accessed in kernel way	2022-01-27 12:03:46 -08:00
cipso_ipv4.c
datagram.c	ipv4: Avoid using RTO_ONLINK with ip_route_connect().	2022-04-22 13:06:03 +01:00
devinet.c	memcg: accounting for objects allocated for new netdevice	2022-05-04 19:16:46 -07:00
esp4.c	xfrm: free not used XFRM_ESP_NO_TRAILER flag	2022-05-06 08:24:20 +02:00
esp4_offload.c	net: Fix esp GSO on inter address family tunnels.	2022-03-07 13:14:04 +01:00
fib_frontend.c	ipv4: remove unnecessary type castings	2022-04-30 15:12:58 +01:00
fib_lookup.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-02-17 11:44:20 -08:00
fib_notifier.c
fib_rules.c	ipv4: remove unnecessary type castings	2022-04-30 15:12:58 +01:00
fib_semantics.c	ipv4: Use dscp_t in struct fib_rt_info	2022-04-11 17:37:50 -07:00
fib_trie.c	ipv4: remove unnecessary type castings	2022-04-30 15:12:58 +01:00
fou.c	fou: Remove XRFM from NET_FOU Kconfig	2022-04-12 14:56:33 -07:00
gre_demux.c
gre_offload.c	gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers	2021-11-24 17:21:42 -08:00
icmp.c	ipv4: remove unnecessary type castings	2022-04-30 15:12:58 +01:00
igmp.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-05-05 13:03:18 -07:00
inet_connection_sock.c	net: Add a second bind table hashed by port and address	2022-05-20 18:16:24 -07:00
inet_diag.c	net: inet: Retire port only listening_hash	2022-05-12 16:52:18 -07:00
inet_fragment.c	ipv4: remove unnecessary type castings	2022-04-30 15:12:58 +01:00
inet_hashtables.c	net: Add a second bind table hashed by port and address	2022-05-20 18:16:24 -07:00
inet_timewait_sock.c	Revert "tcp/dccp: get rid of inet_twsk_purge()"	2022-05-13 12:24:12 +01:00
inetpeer.c
ip_forward.c	net: ip: add skb drop reasons to ip forwarding	2022-04-13 13:09:57 +01:00
ip_fragment.c	net: ip: Handle delivery_time in ip defrag	2022-03-03 14:38:48 +00:00
ip_gre.c	ip_gre: Make GRE and GRETAP devices always NETIF_F_LLTX	2022-05-02 10:30:33 +02:00
ip_input.c	net-core: rx_otherhost_dropped to core_stats	2022-04-07 20:32:49 -07:00
ip_options.c	ipv4: drop fragmentation code from ip_options_build()	2022-01-29 17:53:07 +00:00
ip_output.c	net: Set skb->mono_delivery_time and clear it after sch_handle_ingress()	2022-03-03 14:38:48 +00:00
ip_sockglue.c	ipv4: Exposing __ip_sock_set_tos() in ip.h	2021-11-20 14:11:00 +00:00
ip_tunnel.c	net: Handle l3mdev in ip_tunnel_init_flow	2022-04-15 14:27:30 -07:00
ip_tunnel_core.c
ip_vti.c
ipcomp.c
ipconfig.c
ipip.c
ipmr.c	ipv4: remove unnecessary type castings	2022-04-30 15:12:58 +01:00
ipmr_base.c
Kconfig	fou: Remove XRFM from NET_FOU Kconfig	2022-04-12 14:56:33 -07:00
Makefile
metrics.c
netfilter.c	netfilter: Use l3mdev flow key when re-routing mangled packets	2022-05-16 13:03:29 +02:00
netlink.c
nexthop.c	nexthop: change nexthop_net_exit() to nexthop_net_exit_batch()	2022-02-08 20:41:33 -08:00
ping.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-05-12 16:15:30 -07:00
proc.c	tcp: allocate tcp_death_row outside of struct netns_ipv4	2022-01-26 19:00:31 -08:00
protocol.c
raw.c	net: SO_RCVMARK socket option for SO_MARK with recvmsg()	2022-04-28 13:08:15 -07:00
raw_diag.c
route.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-05-19 11:23:59 -07:00
syncookies.c	tcp: make sure treq->af_specific is initialized	2022-04-25 12:10:11 +01:00
sysctl_net_ipv4.c	net: sysctl: introduce sysctl SYSCTL_THREE	2022-05-03 10:15:06 +02:00
tcp.c	net: Add a second bind table hashed by port and address	2022-05-20 18:16:24 -07:00
tcp_bbr.c	net: allow gso_max_size to exceed 65536	2022-05-16 10:18:55 +01:00
tcp_bic.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_bpf.c	net: remove noblock parameter from recvmsg() entities	2022-04-12 15:00:25 +02:00
tcp_cdg.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_cong.c	tcp: Add tracepoint for tcp_set_ca_state	2022-04-07 20:33:15 -07:00
tcp_cubic.c	tcp_cubic: make hystart_ack_delay() aware of BIG TCP	2022-05-16 10:18:56 +01:00
tcp_dctcp.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_dctcp.h
tcp_diag.c
tcp_fastopen.c
tcp_highspeed.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_htcp.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_hybla.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_illinois.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_input.c	tcp: improve PRR loss recovery	2022-05-19 18:49:50 -07:00
tcp_ipv4.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-05-19 11:23:59 -07:00
tcp_lp.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_metrics.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_minisocks.c	tcp: md5: incorrect tcp_header_len for incoming connections	2022-04-22 15:05:59 -07:00
tcp_nv.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_offload.c	net: move gro definitions to include/net/gro.h	2021-11-16 13:16:54 +00:00
tcp_output.c	net: allow gso_max_size to exceed 65536	2022-05-16 10:18:55 +01:00
tcp_rate.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-04-28 13:02:01 -07:00
tcp_recovery.c	tcp: use tcp_skb_sent_after() instead in RACK	2022-04-30 13:56:46 +01:00
tcp_scalable.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_timer.c
tcp_ulp.c
tcp_vegas.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_vegas.h
tcp_veno.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_westwood.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tcp_yeah.c	tcp: add accessors to read/set tp->snd_cwnd	2022-04-06 12:05:41 -07:00
tunnel4.c
udp.c	inet: rename INET_MATCH()	2022-05-16 10:31:06 +01:00
udp_bpf.c	net: remove noblock parameter from recvmsg() entities	2022-04-12 15:00:25 +02:00
udp_diag.c
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_complete handlers	2021-11-24 17:21:42 -08:00
udp_tunnel_core.c
udp_tunnel_nic.c	udp_tunnel: Fix end of loop test in udp_tunnel_nic_unregister()	2022-02-23 12:35:00 +00:00
udp_tunnel_stub.c
udplite.c
xfrm4_input.c
xfrm4_output.c
xfrm4_policy.c	net: Add l3mdev index to flow struct and avoid oif reset for port devices	2022-03-15 20:20:02 -07:00
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c