Martin KaFai Lau 05c0b35709 tcp: seq_file: Replace listening_hash with lhash2 ... This patch moves the tcp seq_file iteration on listeners from the port only listening_hash to the port+addr lhash2. When iterating from the bpf iter, the next patch will need to lock the socket such that the bpf iter can call setsockopt (e.g. to change the TCP_CONGESTION). To avoid locking the bucket and then locking the sock, the bpf iter will first batch some sockets from the same bucket and then unlock the bucket. If the bucket size is small (which usually is), it is easier to batch the whole bucket such that it is less likely to miss a setsockopt on a socket due to changes in the bucket. However, the port only listening_hash could have many listeners hashed to a bucket (e.g. many individual VIP(s):443 and also multiple by the number of SO_REUSEPORT). We have seen bucket size in tens of thousands range. Also, the chance of having changes in some popular port buckets (e.g. 443) is also high. The port+addr lhash2 was introduced to solve this large listener bucket issue. Also, the listening_hash usage has already been replaced with lhash2 in the fast path inet[6]_lookup_listener(). This patch follows the same direction on moving to lhash2 and iterates the lhash2 instead of listening_hash. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210701200606.1035783-1-kafai@fb.com		2021-07-23 16:44:57 -07:00
..
bpfilter	net: Revert "net: optimize the sockptr_t for unified kernel/user address spaces"	2020-08-10 12:06:44 -07:00
netfilter	netfilter: nf_tables: add and use nft_sk helper	2021-05-29 01:04:53 +02:00
af_inet.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-06-18 19:47:02 -07:00
ah4.c	Networking changes for 5.14.	2021-06-30 15:51:09 -07:00
arp.c	net: Exempt multicast addresses from five-second neighbor lifetime	2020-11-13 14:24:39 -08:00
bpf_tcp_ca.c	bpf: Limit static tcp-cc functions in the .BTF_ids list to x86	2021-05-11 23:23:07 +02:00
cipso_ipv4.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-06-18 19:47:02 -07:00
datagram.c
devinet.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-06-18 19:47:02 -07:00
esp4.c	Networking changes for 5.14.	2021-06-30 15:51:09 -07:00
esp4_offload.c	xfrm: remove description from xfrm_type struct	2021-06-09 09:38:52 +02:00
fib_frontend.c	net: Use nlmsg_unicast() instead of netlink_unicast()	2021-07-13 09:28:29 -07:00
fib_lookup.h	ipv4: Fix spelling mistakes	2021-06-07 14:08:30 -07:00
fib_notifier.c
fib_rules.c	fib: use indirect call wrappers in the most common fib_rules_ops	2020-07-28 17:42:31 -07:00
fib_semantics.c	ipv4: Fix fall-through warnings for Clang	2021-05-17 19:29:10 -05:00
fib_trie.c	IPv4: Extend 'fib_notify_on_flag_change' sysctl	2021-02-08 16:47:03 -08:00
fou.c	genetlink: move to smaller ops wherever possible	2020-10-02 19:11:11 -07:00
gre_demux.c	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
gre_offload.c	ip_gre: add csum offload support for gre header	2021-01-29 20:39:14 -08:00
icmp.c	ipv6: ICMPV6: add response to ICMPV6 RFC 8335 PROBE messages	2021-06-28 14:29:45 -07:00
igmp.c	net: ipv4: fix memory leak in ip_mc_add1_src	2021-06-16 12:41:01 -07:00
inet_connection_sock.c	tcp: Add stats for socket migration.	2021-06-23 12:56:08 -07:00
inet_diag.c	net: Use nlmsg_unicast() instead of netlink_unicast()	2021-07-13 09:28:29 -07:00
inet_fragment.c	inet: frags: batch fqdir destroy works	2020-12-12 15:08:54 -08:00
inet_hashtables.c	tcp: Keep TCP_CLOSE sockets in the reuseport group.	2021-06-15 18:01:05 +02:00
inet_timewait_sock.c	net: Use generic ns_common::count	2020-08-19 14:06:36 +02:00
inetpeer.c	inetpeer: use div64_ul() and clamp_val() calculate inet_peer_threshold	2021-03-01 13:32:12 -08:00
ip_forward.c
ip_fragment.c
ip_gre.c	gre: let mac_header point to outer header only when necessary	2021-06-28 12:44:17 -07:00
ip_input.c	net: use indirect call helpers for dst_input	2021-02-03 14:51:39 -08:00
ip_options.c	net: clean up codestyle for net/ipv4	2020-08-25 06:28:02 -07:00
ip_output.c	net: ip: avoid OOM kills with large UDP sends over loopback	2021-06-24 11:17:21 -07:00
ip_sockglue.c	net: Remove duplicated midx check against 0	2020-08-25 06:23:59 -07:00
ip_tunnel.c	net: ip_tunnel: fix mtu calculation for ETHER tunnel devices	2021-07-09 13:53:53 -07:00
ip_tunnel_core.c	net: ip_tunnel: clean up endianness conversions	2021-01-08 19:25:35 -08:00
ip_vti.c	ipv4: Fix fall-through warnings for Clang	2021-05-17 19:29:10 -05:00
ipcomp.c	Networking changes for 5.14.	2021-06-30 15:51:09 -07:00
ipconfig.c	net: ipconfig: Don't override command-line hostnames or domains	2021-06-02 13:27:03 -07:00
ipip.c	ipip: allow redirecting ipip and mplsip packets to eth devices	2021-06-28 12:44:17 -07:00
ipmr.c	ipmr: Fix indentation issue	2021-07-07 20:52:25 -07:00
ipmr_base.c
Kconfig	net: ipv4: remove duplicate "the the" phrase in Kconfig text	2020-08-18 16:02:16 -07:00
Makefile	bpf: Clean up sockmap related Kconfigs	2021-02-26 12:28:03 -08:00
metrics.c	treewide: rename nla_strlcpy to nla_strscpy.	2020-11-16 08:08:54 -08:00
netfilter.c	netfilter: Dissect flow after packet mangling	2021-04-18 22:04:16 +02:00
netlink.c
nexthop.c	nexthop: Restart nexthop dump based on last dumped nexthop identifier	2021-04-19 15:20:34 -07:00
ping.c	net: sock: introduce sk_error_report	2021-06-29 11:28:21 -07:00
proc.c	tcp: Add stats for socket migration.	2021-06-23 12:56:08 -07:00
protocol.c	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
raw.c	net: sock: introduce sk_error_report	2021-06-29 11:28:21 -07:00
raw_diag.c	net: Use nlmsg_unicast() instead of netlink_unicast()	2021-07-13 09:28:29 -07:00
route.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-06-29 15:45:27 -07:00
syncookies.c	selinux/stable-5.11 PR 20201214	2020-12-16 11:01:04 -08:00
sysctl_net_ipv4.c	net: Introduce net.ipv4.tcp_migrate_req.	2021-06-15 18:01:05 +02:00
tcp.c	tcp: call sk_wmem_schedule before sk_mem_charge in zerocopy path	2021-07-09 11:25:24 -07:00
tcp_bbr.c	tcp: only postpone PROBE_RTT if RTT is < current min_rtt estimate	2020-11-17 11:03:22 -08:00
tcp_bic.c	tcp: fix stretch ACK bugs in BIC	2020-03-16 18:26:54 -07:00
tcp_bpf.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-06-29 15:45:27 -07:00
tcp_cdg.c
tcp_cong.c	net: Only allow init netns to set default tcp cong to a restricted algo	2021-05-04 11:58:28 -07:00
tcp_cubic.c	tcp: Rename bictcp function prefix to cubictcp	2021-03-26 20:41:51 -07:00
tcp_dctcp.c
tcp_dctcp.h
tcp_diag.c	inet_diag: Move the INET_DIAG_REQ_BYTECODE nlattr to cb->data	2020-02-27 18:50:19 -08:00
tcp_fastopen.c	ipv4: Fix spelling mistakes	2021-06-07 14:08:30 -07:00
tcp_highspeed.c	Replace HTTP links with HTTPS ones: IPv*	2020-07-06 13:23:03 -07:00
tcp_htcp.c	Replace HTTP links with HTTPS ones: IPv*	2020-07-06 13:23:03 -07:00
tcp_hybla.c
tcp_illinois.c
tcp_input.c	mptcp: avoid processing packet if a subflow reset	2021-07-09 18:38:53 -07:00
tcp_ipv4.c	tcp: seq_file: Replace listening_hash with lhash2	2021-07-23 16:44:57 -07:00
tcp_lp.c	ipv4: tcp_lp.c: Couple of typo fixes	2021-03-28 17:31:13 -07:00
tcp_metrics.c	fixes-v5.11	2020-12-14 16:40:27 -08:00
tcp_minisocks.c	tcp: Add stats for socket migration.	2021-06-23 12:56:08 -07:00
tcp_nv.c
tcp_offload.c
tcp_output.c	ipv6: tcp: drop silly ICMPv6 packet too big messages	2021-07-08 12:27:08 -07:00
tcp_rate.c
tcp_recovery.c	tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPEN	2021-01-23 21:33:01 -08:00
tcp_scalable.c	net: ipv4: delete repeated words	2020-08-24 17:31:20 -07:00
tcp_timer.c	net: sock: introduce sk_error_report	2021-06-29 11:28:21 -07:00
tcp_ulp.c	bpf: sockmap: Only check ULP for TCP sockets	2020-03-09 22:34:58 +01:00
tcp_vegas.c	tcp: use semicolons rather than commas to separate statements	2020-10-13 17:11:52 -07:00
tcp_vegas.h
tcp_veno.c	Replace HTTP links with HTTPS ones: IPv*	2020-07-06 13:23:03 -07:00
tcp_westwood.c
tcp_yeah.c	tcp_yeah: check struct yeah size at compile time	2021-06-29 11:54:36 -07:00
tunnel4.c	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
udp.c	udp: annotate data races around unix_sk(sk)->gso_size	2021-07-01 13:23:19 -07:00
udp_bpf.c	sock_map: Lift socket state restriction for datagram sockets	2021-07-15 18:17:49 -07:00
udp_diag.c	net: Use nlmsg_unicast() instead of netlink_unicast()	2021-07-13 09:28:29 -07:00
udp_impl.h	net: pass a sockptr_t into ->setsockopt	2020-07-24 15:41:54 -07:00
udp_offload.c	udp: properly flush normal packet at GRO time	2021-07-02 16:19:14 -07:00
udp_tunnel_core.c	udp_tunnel: reshuffle NETIF_F_RX_UDP_TUNNEL_PORT checks	2021-01-07 12:53:29 -08:00
udp_tunnel_nic.c	udp_tunnel: add the ability to share port tables	2020-09-28 12:50:12 -07:00
udp_tunnel_stub.c	udp_tunnel: add central NIC RX port offload infrastructure	2020-07-10 13:54:00 -07:00
udplite.c	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
xfrm4_input.c	xfrm: state: remove extract_input indirection from xfrm_state_afinfo	2020-05-06 09:40:08 +02:00
xfrm4_output.c	xfrm: fix unused variable warning if CONFIG_NETFILTER=n	2020-05-11 15:12:27 +02:00
xfrm4_policy.c
xfrm4_protocol.c	net: Remove the member netns_ok	2021-05-17 15:29:35 -07:00
xfrm4_state.c	xfrm: remove output_finish indirection from xfrm_state_afinfo	2020-05-06 09:40:08 +02:00
xfrm4_tunnel.c	xfrm: remove description from xfrm_type struct	2021-06-09 09:38:52 +02:00