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linux/net/ipv4
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Paolo Abeni 4d3365d5d3 Merge branch 'big-tcp-for-udp-tunnels' 
Alice Mikityanska says:

====================
BIG TCP for UDP tunnels

This series is a follow-up to "BIG TCP without HBH in IPv6", and it adds
support for BIG TCP IPv4/IPv6 workloads in vxlan and geneve. Now that
IPv6 BIG TCP doesn't require stripping the HBH in all various
combinations in tunneled traffic, adding BIG TCP becomes feasible.

Patch 01 adds accessors for the length field in the UDP header, as
suggested by Paolo in review. The usage of udp_set_len is then added in
the following patches that start using length=0 in BIG TCP UDP packets.

Patches 02-04 close the gaps that prevent BIG TCP packets from going
through UDP tunnel code.

Patch 05 validates packets in udp_gro_receive to exclude packets with
length=0 from GRO aggregation.

Patch 06 is for proper formatting in tcpdump (set UDP len to 0 rather
than a trimmed value on overflow).

Patches 07-08 bump up tso_max_size for VXLAN and GENEVE.

Patch 09 adds selftests.
====================$

Link: https://patch.msgid.link/20260710134242.216538-1-alice.kernel@fastmail.im
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-07-22 13:49:03 +02:00
..
netfilter net: Use helpers to get/set UDP len tree-wide 2026-07-22 13:47:02 +02:00
af_inet.c ipv4: remove obsolete EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL() 2026-06-05 17:47:07 -07:00
ah4.c xfrm: ah: use skb_to_full_sk in async output callbacks 2026-05-16 10:56:14 +02:00
arp.c net: remove ax25 and amateur radio (hamradio) subsystem 2026-04-23 10:24:02 -07:00
bpf_tcp_ca.c bpf: Reject TCP_NODELAY in bpf-tcp-cc 2026-04-22 12:58:57 -07:00
cipso_ipv4.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
datagram.c net: Convert proto callbacks from sockaddr to sockaddr_unsized 2025-11-04 19:10:33 -08:00
devinet.c net: ipv4: clear dev->ip_ptr before destroying inetdev 2026-07-21 12:25:08 -07:00
esp4_offload.c xfrm: Fix inner mode lookup in tunnel mode GSO segmentation 2025-12-04 09:54:53 +01:00
esp4.c net: Use helpers to get/set UDP len tree-wide 2026-07-22 13:47:02 +02:00
fib_frontend.c ipv4: fib: Define fib_table_hash_lock under CONFIG_IP_MULTIPLE_TABLES. 2026-07-07 10:51:06 +02:00
fib_lookup.h ipv4: fib: Annotate access to struct fib_alias.fa_state. 2026-01-28 19:33:07 -08:00
fib_notifier.c net: do not acquire rtnl in fib_seq_sum() 2024-10-11 15:35:05 -07:00
fib_rules.c net: fib_rules: Only hold RTNL for the first IPv4 RTM_NEWRULE. 2026-07-01 18:42:34 +02:00
fib_semantics.c ipv4: remove obsolete EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL() 2026-06-05 17:47:07 -07:00
fib_trie.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-07-20 09:18:11 +02:00
fou_bpf.c ip_tunnel: convert __be16 tunnel flags to bitmaps 2024-04-01 10:49:28 +01:00
fou_core.c udp: Support BIG TCP GSO packets where they can occur 2026-07-22 13:47:02 +02:00
fou_nl.c fou: Don't allow 0 for FOU_ATTR_IPPROTO. 2026-01-17 16:00:24 -08:00
fou_nl.h tools: ynl-gen: add regeneration comment 2025-11-25 19:20:42 -08:00
gre_demux.c gre: Count GRE packet drops 2026-04-12 12:33:33 -07:00
gre_offload.c net: gro: rename skb_gro_header_hard() 2024-03-05 13:30:11 +01:00
icmp.c ipv4: icmp: reject broadcast/multicast routes 2026-05-20 19:00:02 -07:00
igmp_internal.h netlink: support dumping IPv4 multicast addresses 2025-02-11 11:26:53 +01:00
igmp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-07-10 10:20:05 +02:00
inet_connection_sock.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-06-16 14:59:58 -07:00
inet_diag.c inet_diag: report delayed ack timer information 2026-03-06 16:32:26 -08:00
inet_fragment.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-06-11 14:33:35 -07:00
inet_hashtables.c net: remove some unused EXPORT_SYMBOL()s 2026-06-12 16:43:11 -07:00
inet_timewait_sock.c inet: Avoid ehash lookup race in inet_twsk_hashdance_schedule() 2025-10-17 16:08:43 -07:00
inetpeer.c inetpeer: add a missing read_seqretry() in inet_getpeer() 2026-05-06 17:44:13 -07:00
ip_forward.c net: fix IPSTATS_MIB_OUTFORWDATAGRAMS increment after fragment check 2023-10-13 09:58:45 -07:00
ip_fragment.c inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush 2026-06-04 18:05:23 -07:00
ip_gre.c net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink 2026-06-17 16:01:52 -07:00
ip_input.c tcp: move tcp_v4_early_demux() to net/ipv4/ip_input.c 2026-03-09 18:50:24 -07:00
ip_options.c ipv4: restrict IPOPT_SSRR and IPOPT_LSRR options 2026-06-03 18:53:14 -07:00
ip_output.c ipv4: account for fraggap on the paged allocation path 2026-06-21 15:24:49 -07:00
ip_sockglue.c net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
ip_tunnel_core.c tunnels: do not assume transport header in iptunnel_pmtud_check_icmp() 2026-05-26 18:11:47 -07:00
ip_tunnel.c ip_tunnel: annotate data-races around t->err_count and t->err_time 2026-06-12 16:40:32 -07:00
ip_vti.c net: ip_vti: require CAP_NET_ADMIN in the device netns for changelink 2026-06-17 16:01:52 -07:00
ipcomp.c xfrm: add extack to xfrm_init_state 2026-06-04 12:22:35 +02:00
ipconfig.c net: Use helpers to get/set UDP len tree-wide 2026-07-22 13:47:02 +02:00
ipip.c net: ipip: use tunnel parameters for fill_forward_path route lookup 2026-07-21 12:33:34 +02:00
ipmr_base.c ipmr: Replace use of system_unbound_wq with system_dfl_wq 2026-05-19 18:21:39 -07:00
ipmr.c ipmr: Convert mr_table.cache_resolve_queue_len to u32. 2026-06-11 15:17:30 -07:00
Kconfig net/tcp: Remove tcp_sigpool 2026-04-30 09:38:56 +02:00
Makefile netfilter: add option for GCOV profiling 2026-05-24 22:55:47 +02:00
metrics.c net: remove EXPORT_IPV6_MOD() and EXPORT_IPV6_MOD_GPL() macros 2026-03-29 11:21:22 -07:00
netfilter.c net: Add SPDX ids to some source files 2026-03-09 18:32:45 -07:00
netlink.c
nexthop.c ipv4: Add __must_check to nexthop removal functions 2026-05-10 10:16:01 -07:00
ping.c Networking changes for 7.1. 2026-04-14 18:36:10 -07:00
proc.c udp: Remove UDP-Lite SNMP stats. 2026-03-13 18:57:44 -07:00
protocol.c
raw_diag.c inet_diag: change inet_diag_bc_sk() first argument 2025-08-29 19:29:24 -07:00
raw.c ipv4: raw: convert do_raw_getsockopt to sockopt_t 2026-07-02 12:29:06 +02:00
route.c Merge branch 'big-tcp-for-udp-tunnels' 2026-07-22 13:49:03 +02:00
syncookies.c tcp: rehash onto different local ECMP path on retransmit timeout 2026-06-15 15:57:31 -07:00
sysctl_net_ipv4.c net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes 2026-06-17 16:35:13 -07:00
tcp_ao.c tcp: restore RCU grace period in tcp_ao_destroy_sock 2026-06-29 18:14:30 -07:00
tcp_bbr.c tcp_bbr: fix SPDX-License-Identifier to be GPL-2.0 OR BSD-3-Clause 2026-06-01 16:51:08 -07:00
tcp_bic.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_bpf.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-03-05 12:11:05 -08:00
tcp_cdg.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_cong.c tcp: ECT_1_NEGOTIATION and NEEDS_ACCECN identifiers 2026-02-03 15:13:24 +01:00
tcp_cubic.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_dctcp.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_dctcp.h net: Add SPDX ids to some source files 2026-03-09 18:32:45 -07:00
tcp_diag.c inet_diag: report delayed ack timer information 2026-03-06 16:32:26 -08:00
tcp_fastopen.c net: remove EXPORT_IPV6_MOD() and EXPORT_IPV6_MOD_GPL() macros 2026-03-29 11:21:22 -07:00
tcp_highspeed.c
tcp_htcp.c tcp: Use clamp() in htcp_alpha_update() 2024-08-06 12:16:25 -07:00
tcp_hybla.c
tcp_illinois.c
tcp_input.c tcp: rehash onto different local ECMP path on retransmit timeout 2026-06-15 15:57:31 -07:00
tcp_ipv4.c tcp: fix TIME_WAIT socket reference leak on PSP policy failure 2026-07-17 11:53:55 +02:00
tcp_lp.c net: tcp_lp: fix kernel-doc warnings and update outdated reference links 2025-10-28 17:52:44 -07:00
tcp_metrics.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_minisocks.c net: remove some unused EXPORT_SYMBOL()s 2026-06-12 16:43:11 -07:00
tcp_nv.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_offload.c gro: flushing when CWR is set negatively affects AccECN 2026-02-03 15:13:24 +01:00
tcp_output.c tcp: Decrement tcp_md5_needed static branch 2026-06-29 18:14:30 -07:00
tcp_plb.c tcp: rehash onto different local ECMP path on retransmit timeout 2026-06-15 15:57:31 -07:00
tcp_recovery.c tcp: move tcp_rack_advance() to tcp_input.c 2026-01-28 19:31:51 -08:00
tcp_scalable.c
tcp_timer.c net/tcp: Prevent inlining tcp_syn_ack_timeout() 2026-07-21 09:09:53 -07:00
tcp_ulp.c
tcp_vegas.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_vegas.h tcp: add cwnd_event_tx_start to tcp_congestion_ops 2026-03-24 21:00:38 -07:00
tcp_veno.c tcp: add cwnd_event_tx_start to tcp_congestion_ops 2026-03-24 21:00:38 -07:00
tcp_westwood.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp_yeah.c tcp: annotate data-races around tp->snd_ssthresh 2026-04-18 11:10:12 -07:00
tcp.c net: remove some unused EXPORT_SYMBOL()s 2026-06-12 16:43:11 -07:00
tunnel4.c net: fill in MODULE_DESCRIPTION()s for ipv4 modules 2024-02-09 14:12:02 -08:00
udp_bpf.c sockmap: Fix use-after-free in udp_bpf_recvmsg() 2026-06-14 21:30:20 -07:00
udp_diag.c udp: Don't pass udptable to IPv4 socket lookup functions. 2026-03-13 18:57:46 -07:00
udp_offload.c udp: Validate UDP length in udp_gro_receive 2026-07-22 13:47:02 +02:00
udp_tunnel_core.c udp: Set length in UDP header to 0 for big GSO packets 2026-07-22 13:47:02 +02:00
udp_tunnel_nic.c net: udp_tunnel: prevent double queueing in udp_tunnel_nic_device_sync 2026-06-25 08:35:51 -07:00
udp_tunnel_stub.c
udp.c Merge branch 'big-tcp-for-udp-tunnels' 2026-07-22 13:49:03 +02:00
xfrm4_input.c xfrm: Fix dev use-after-free in xfrm async resumption 2026-06-12 08:39:59 +02:00
xfrm4_output.c ipv4: adopt dst_dev, skb_dst_dev and skb_dst_dev_net[_rcu] 2025-07-02 14:32:30 -07:00
xfrm4_policy.c ipv4: Convert ->flowi4_tos to dscp_t. 2025-08-26 17:34:31 -07:00
xfrm4_protocol.c ipv4: Convert ip_route_input_noref() to dscp_t. 2024-10-03 16:21:21 -07:00
xfrm4_state.c
xfrm4_tunnel.c net: fill in MODULE_DESCRIPTION()s for ipv4 modules 2024-02-09 14:12:02 -08:00