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Paolo Abeni 5c2c3c38be net: gro: fix outer network offset ... The udp GRO complete stage assumes that all the packets inserted the RX have the `encapsulation` flag zeroed. Such assumption is not true, as a few H/W NICs can set such flag when H/W offloading the checksum for an UDP encapsulated traffic, the tun driver can inject GSO packets with UDP encapsulation and the problematic layout can also be created via a veth based setup. Due to the above, in the problematic scenarios, udp4_gro_complete() uses the wrong network offset (inner instead of outer) to compute the outer UDP header pseudo checksum, leading to csum validation errors later on in packet processing. Address the issue always clearing the encapsulation flag at GRO completion time. Such flag will be set again as needed for encapsulated packets by udp_gro_complete(). Fixes: 5ef31ea5d0 ("net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb") Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/562638dbebb3b15424220e26a180274b387e2a88.1770032084.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		History 2026-02-03 19:23:41 -08:00
..
bpf_sk_storage.c	bpf: Remove smap argument from bpf_selem_free()	2025-11-18 16:20:25 -08:00
datagram.c	net: datagram: introduce datagram_poll_queue for custom receive queues	2025-10-23 15:46:04 +02:00
dev.c	net: add net.core.qdisc_max_burst	2026-01-13 10:12:11 +01:00
dev.h	for-6.19/io_uring-20251201	2025-12-03 18:58:57 -08:00
dev_addr_lists.c	net: s/dev_pre_changeaddr_notify/netif_pre_changeaddr_notify/	2025-07-18 17:27:47 -07:00
dev_addr_lists_test.c	net: dev_addr_lists: move locking out of init/exit in kunit	2024-04-15 10:26:35 +01:00
dev_api.c	net: define an enum for the napi threaded state	2025-07-24 18:34:55 -07:00
dev_ioctl.c	phy: add hwtstamp_get callback to phy drivers	2025-11-26 16:56:33 -08:00
devmem.c	netmem, devmem, tcp: access pp fields through @desc in net_iov	2025-11-27 17:41:51 -08:00
devmem.h	net: devmem: Remove unused declaration net_devmem_bind_tx_release()	2025-11-04 17:29:19 -08:00
drop_monitor.c	treewide, timers: Rename from_timer() to timer_container_of()	2025-06-08 09:07:37 +02:00
dst.c	dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list()	2026-01-13 19:08:18 -08:00
dst_cache.c	net: dst: annotate data-races around dst->obsolete	2025-07-02 14:32:29 -07:00
failover.c	net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf	2022-12-12 15:18:25 -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	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2025-04-17 12:26:50 -07:00
filter.c	net: don't touch dev->stats in BPF redirect paths	2026-01-31 12:35:27 -08:00
flow_dissector.c	net: remove '__' from __skb_flow_get_ports()	2025-02-24 14:27:53 -08:00
flow_offload.c	tc: flower: Enable offload support IPSEC SPI field.	2023-08-02 10:09:32 +01:00
gen_estimator.c	net_sched: gen_estimator: fix est_timer() vs CONFIG_PREEMPT_RT=y	2025-08-29 19:04:20 -07:00
gen_stats.c	net: Remove the obsolte u64_stats_fetch_*_irq() users (net).	2022-10-28 20:13:54 -07:00
gro.c	net: gro: fix outer network offset	2026-02-03 19:23:41 -08:00
gro_cells.c	net: gro_cells: Reduce lock scope in gro_cell_poll	2025-11-05 17:41:29 -08:00
gso.c	net: introduce struct net_hotdata	2024-03-07 21:12:41 -08:00
hotdata.c	net: add net.core.qdisc_max_burst	2026-01-13 10:12:11 +01:00
hwbm.c	net: hwbm: Make the hwbm_pool lock a mutex	2019-06-09 19:40:10 -07:00
ieee8021q_helpers.c	net: ieee8021q: fix insufficient table-size assertion	2025-07-01 12:55:49 +02:00
link_watch.c	linkwatch: use __dev_put() in callers to prevent UAF	2026-02-02 16:59:18 -08:00
lock_debug.c	netdev: fix the locking for netdev notifications	2025-04-17 18:55:14 -07:00
lwt_bpf.c	ipv4: Convert ->flowi4_tos to dscp_t.	2025-08-26 17:34:31 -07:00
lwtunnel.c	inet: Remove rtnl_is_held arg of lwtunnel_valid_encap_type(_attr)?().	2025-05-20 19:18:24 -07:00
Makefile	queue_api: add support for fetching per queue DMA dev	2025-08-28 16:05:31 -07:00
mp_dmabuf_devmem.h	memory-provider: dmabuf devmem memory provider	2024-09-11 20:44:31 -07:00
neighbour.c	neighbour: Convert rwlock of struct neigh_table to spinlock.	2025-10-24 17:57:20 -07:00
net-procfs.c	net: add proper RCU protection to /proc/net/ptype	2026-02-03 19:20:30 -08:00
net-sysfs.c	Networking changes for 6.18.	2025-10-02 15:17:01 -07:00
net-sysfs.h	net: remove RTNL use for /proc/sys/net/core/rps_default_mask	2025-07-07 18:42:12 -07:00
net-traces.c	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
net_namespace.c	Networking changes for 6.19.	2025-12-03 17:24:33 -08:00
net_test.c	pfcp: always set pfcp metadata	2024-04-01 10:49:28 +01:00
netclassid_cgroup.c	net, bpf: Fix RCU usage in task_cls_state() for BPF programs	2025-06-11 21:30:29 +02:00
netdev-genl-gen.c	tools: ynl-gen: add regeneration comment	2025-11-25 19:20:42 -08:00
netdev-genl-gen.h	tools: ynl-gen: add regeneration comment	2025-11-25 19:20:42 -08:00
netdev-genl.c	net: devmem: allow binding on rx queues with same DMA devices	2025-08-28 16:05:32 -07:00
netdev_queues.c	queue_api: add support for fetching per queue DMA dev	2025-08-28 16:05:31 -07:00
netdev_rx_queue.c	net: add helper to pre-check if PP for an Rx queue will be unreadable	2025-09-04 10:19:17 +02:00
netevent.c	net: core: Correct function name netevent_unregister_notifier() in the kerneldoc	2021-03-28 17:56:56 -07:00
netmem_priv.h	netmem: replace __netmem_clear_lsb() with netmem_to_nmdesc()	2025-10-14 13:37:26 +02:00
netpoll.c	net: netpoll: initialize work queue before error checks	2025-11-28 20:16:57 -08:00
netprio_cgroup.c	bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode	2021-09-13 16:35:58 -07:00
of_net.c	net: Explicitly include correct DT includes	2023-07-27 20:33:16 -07:00
page_pool.c	net: page_pool: sanitise allocation order	2025-12-02 11:08:39 -08:00
page_pool_priv.h	net: page_pool: don't try to stash the napi id	2025-01-27 14:37:41 -08:00
page_pool_user.c	net: use napi_id_valid helper	2025-02-17 16:43:04 -08:00
pktgen.c	net: pktgen: Use min()/min_t() to improve pktgen_finalize_skb()	2025-08-21 10:12:11 +02:00
ptp_classifier.c	ptp: Add generic PTP is_sync() function	2022-03-07 11:31:34 +00:00
request_sock.c	tcp: Remove stale locking comment for TFO.	2025-09-23 18:21:36 -07:00
rtnetlink.c	rtnetlink: honor RTEXT_FILTER_SKIP_STATS in IFLA_STATS	2025-11-04 16:07:37 -08:00
scm.c	scm: Convert put_cmsg() to scoped user access	2025-11-18 15:27:34 +01:00
secure_seq.c	net: Retire DCCP socket.	2025-04-11 18:58:10 -07:00
selftests.c	net: selftests: export packet creation helpers for driver use	2025-11-06 13:38:11 +01:00
skb_fault_injection.c	net: Implement fault injection forcing skb reallocation	2024-11-12 12:05:33 +01:00
skbuff.c	net: add skb->data_len and (skb>end - skb->tail) to skb_dump()	2026-01-15 19:49:47 -08:00
skmsg.c	net: replace use of system_wq with system_percpu_wq	2025-09-22 17:40:30 -07:00
sock.c	net: sock: fix hardened usercopy panic in sock_recv_errqueue	2026-01-04 09:54:32 -08:00
sock_destructor.h	skb_expand_head() adjust skb->truesize incorrectly	2021-10-22 12:35:51 -07:00
sock_diag.c	net: WQ_PERCPU added to alloc_workqueue users	2025-09-22 17:40:30 -07:00
sock_map.c	bpf: Remove attach_type in sockmap_link	2025-07-11 10:51:55 -07:00
sock_reuseport.c	net: core: annotate socks of struct sock_reuseport with __counted_by	2024-08-02 17:16:59 -07:00
stream.c	net: stream: add description for sk_stream_write_space()	2025-07-18 16:57:21 -07:00
sysctl_net_core.c	net: add net.core.qdisc_max_burst	2026-01-13 10:12:11 +01:00
timestamping.c	net: Add the possibility to support a selected hwtstamp in netdevice	2024-12-16 12:51:40 +00:00
tso.c	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
utils.c	net: Fix checksum update for ILA adj-transport	2025-05-30 19:53:51 -07:00
xdp.c	net: xdp: pass full flags to xdp_update_skb_shared_info()	2025-09-11 12:00:20 +02:00