mirror-linux/net/core
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>
2026-02-03 19:23:41 -08:00
..
Makefile queue_api: add support for fetching per queue DMA dev 2025-08-28 16:05:31 -07:00
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
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
fib_notifier.c
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
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
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
hotdata.c net: add net.core.qdisc_max_burst 2026-01-13 10:12:11 +01:00
hwbm.c
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
mp_dmabuf_devmem.h
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
net_namespace.c Networking changes for 6.19. 2025-12-03 17:24:33 -08:00
net_test.c
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
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
of_net.c
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
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
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
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
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