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14ce9a47c5
UDP and UDP-Lite shared __udp4_lib_rcv() and __udp6_lib_rcv() by passing IPPROTO_UDP or IPPROTO_UDPLITE. Now, @proto is always IPPROTO_UDP. Let's not pass it and rename the functions accordingly. With this series removing a bunch of conditionals for UDP-Lite from the fast path, udp_rr with 20,000 flows sees a 10% increase in pps (13.3 Mpps -> 14.7 Mpps) on an AMD EPYC 7B12 (Zen 2) 64-Core Processor platform. [ With FDO, the baseline is much higher and the delta was ~3%, 20.1 Mpps -> 20.7 Mpps ] Before: $ nstat > /dev/null; sleep 1; nstat | grep Udp Udp6InDatagrams 14013408 0.0 Udp6OutDatagrams 14013128 0.0 After: $ nstat > /dev/null; sleep 1; nstat | grep Udp Udp6InDatagrams 15491971 0.0 Udp6OutDatagrams 15491671 0.0 $ ./scripts/bloat-o-meter vmlinux.before vmlinux.after add/remove: 13/75 grow/shrink: 11/75 up/down: 13777/-18401 (-4624) Function old new delta udp4_gro_receive 872 866 -6 udp6_gro_receive 910 903 -7 udp_rcv 32 1727 +1695 udpv6_rcv 32 1450 +1418 __udp4_lib_rcv 2045 - -2045 __udp6_lib_rcv 2084 - -2084 udp_unicast_rcv_skb 160 149 -11 udp6_unicast_rcv_skb 196 181 -15 __udp4_lib_mcast_deliver 925 846 -79 __udp6_lib_mcast_deliver 922 810 -112 __udp4_lib_lookup 973 969 -4 __udp6_lib_lookup 940 929 -11 __udp4_lib_lookup_skb 106 100 -6 __udp6_lib_lookup_skb 71 66 -5 udp4_lib_lookup_skb 132 127 -5 udp6_lib_lookup_skb 87 81 -6 udp_queue_rcv_skb 326 356 +30 udpv6_queue_rcv_skb 331 361 +30 udp_queue_rcv_one_skb 1233 914 -319 udpv6_queue_rcv_one_skb 1250 930 -320 __udp_enqueue_schedule_skb 1067 995 -72 udp_rcv_segment 520 480 -40 udp_post_segment_fix_csum 120 - -120 udp_lib_checksum_complete 200 84 -116 udp_err 27 1103 +1076 udpv6_err 36 1417 +1381 __udp4_lib_err 1112 - -1112 __udp6_lib_err 1448 - -1448 udp_recvmsg 1149 994 -155 udpv6_recvmsg 1349 1294 -55 udp_sendmsg 2730 2648 -82 udp_send_skb 909 681 -228 udpv6_sendmsg 3022 2861 -161 udp_v6_send_skb 1214 952 -262 ... Total: Before=18446744073748075501, After=18446744073748070877, chg -0.00% Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260311052020.1213705-16-kuniyu@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| .. | ||
| ila | ||
| netfilter | ||
| addrconf_core.c | ||
| addrconf.c | ||
| addrlabel.c | ||
| af_inet6.c | ||
| ah6.c | ||
| anycast.c | ||
| calipso.c | ||
| datagram.c | ||
| esp6_offload.c | ||
| esp6.c | ||
| exthdrs_core.c | ||
| exthdrs_offload.c | ||
| exthdrs.c | ||
| fib6_notifier.c | ||
| fib6_rules.c | ||
| fou6.c | ||
| icmp.c | ||
| inet6_connection_sock.c | ||
| inet6_hashtables.c | ||
| ioam6_iptunnel.c | ||
| ioam6.c | ||
| ip6_checksum.c | ||
| ip6_fib.c | ||
| ip6_flowlabel.c | ||
| ip6_gre.c | ||
| ip6_icmp.c | ||
| ip6_input.c | ||
| ip6_offload.c | ||
| ip6_offload.h | ||
| ip6_output.c | ||
| ip6_tunnel.c | ||
| ip6_udp_tunnel.c | ||
| ip6_vti.c | ||
| ip6mr.c | ||
| ipcomp6.c | ||
| ipv6_sockglue.c | ||
| Kconfig | ||
| Makefile | ||
| mcast_snoop.c | ||
| mcast.c | ||
| mip6.c | ||
| ndisc.c | ||
| netfilter.c | ||
| output_core.c | ||
| ping.c | ||
| proc.c | ||
| protocol.c | ||
| raw.c | ||
| reassembly.c | ||
| route.c | ||
| rpl_iptunnel.c | ||
| rpl.c | ||
| seg6_hmac.c | ||
| seg6_iptunnel.c | ||
| seg6_local.c | ||
| seg6.c | ||
| sit.c | ||
| syncookies.c | ||
| sysctl_net_ipv6.c | ||
| tcp_ao.c | ||
| tcp_ipv6.c | ||
| tcpv6_offload.c | ||
| tunnel6.c | ||
| udp_offload.c | ||
| udp.c | ||
| xfrm6_input.c | ||
| xfrm6_output.c | ||
| xfrm6_policy.c | ||
| xfrm6_protocol.c | ||
| xfrm6_state.c | ||
| xfrm6_tunnel.c | ||