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linux/tools/testing/selftests/net
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Anubhav Singh f8e8486702 selftests/net: use destination options instead of hop-by-hop 
The GRO self-test, gro.c, currently constructs IPv6 packets containing a
Hop-by-Hop Options header (IPPROTO_HOPOPTS) to ensure the GRO path
correctly handles IPv6 extension headers.

However, network elements may be configured to drop packets with the
Hop-by-Hop Options header (HBH). This causes the self-test to fail
in environments where such network elements are present.

To improve the robustness and reliability of this test in diverse
network environments, switch from using IPPROTO_HOPOPTS to
IPPROTO_DSTOPTS (Destination Options).

The Destination Options header is less likely to be dropped by
intermediate routers and still serves the core purpose of the test:
validating GRO's handling of an IPv6 extension header. This change
ensures the test can execute successfully without being incorrectly
failed by network policies outside the kernel's control.

Fixes: 7d1575014a ("selftests/net: GRO coalesce test")
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Anubhav Singh <anubhavsinggh@google.com>
Link: https://patch.msgid.link/20251030060436.1556664-1-anubhavsinggh@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-10-31 17:33:17 -07:00
..
af_unix
selftests: net: unify the Makefile formats
2025-10-06 13:14:06 -07:00
bench
selftests: pp-bench: remove page_pool_put_page wrapper
2025-07-01 17:42:11 -07:00
can
selftests: can: enable CONFIG_CAN_VCAN as a module
2025-09-10 17:11:50 +02:00
forwarding
selftests: net: unify the Makefile formats
2025-10-06 13:14:06 -07:00
hsr
selftests: net: unify the Makefile formats
2025-10-06 13:14:06 -07:00
lib
selftests: drv-net: update remaining Python init files
2025-10-12 19:03:53 +01:00
mptcp
selftests: mptcp: join: mark laminar tests as skipped if not supported
2025-10-21 17:36:47 -07:00
netfilter
selftests: netfilter: query conntrack state to check for port clash resolution
2025-10-08 13:17:31 +02:00
openvswitch
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-09-18 11:26:06 -07:00
ovpn
Merge tag 'net-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-10-09 11:13:08 -07:00
packetdrill
selftests: net: unify the Makefile formats
2025-10-06 13:14:06 -07:00
rds
selftests: net: unify the Makefile formats
2025-10-06 13:14:06 -07:00
tcp_ao
selftests: net: sort configs
2025-10-06 13:12:59 -07:00
.gitignore
selftests/net: add tcp_port_share to .gitignore
2025-09-30 08:30:26 -07:00
altnames.sh
…
amt.sh
selftests: net: amt: indicate progress in the stress test
2025-04-04 08:02:09 -07:00
arp_ndisc_evict_nocarrier.sh
selftests/net: convert arp_ndisc_evict_nocarrier.sh to run it in unique namespace
2023-12-05 13:00:55 +01:00
arp_ndisc_untracked_subnets.sh
selftests/net: use tc rule to filter the na packet
2024-05-21 13:25:11 +02:00
bareudp.sh
selftests: net: use BASH for bareudp testing
2025-10-29 17:56:03 -07:00
big_tcp.sh
selftests: net: let big_tcp test cope with slow env
2024-02-05 12:36:16 +00:00
bind_bhash.c
selftest: net: Fix weird setsockopt() in bind_bhash.c.
2025-09-04 07:30:04 -07:00
bind_bhash.sh
selftests/net: Improve bind_bhash.sh to accommodate predictable network interface names
2023-09-10 18:49:29 +01:00
bind_timewait.c
…
bind_wildcard.c
selftest: tcp: Add bind() tests for SO_REUSEADDR/SO_REUSEPORT.
2024-03-29 14:48:39 -07:00
bpf_offload.py
selftests: net: bpf_offload: print loaded programs on mismatch
2025-08-20 19:28:03 -07:00
bpf.mk
selftests: net: extract BPF building logic from the Makefile
2024-04-24 20:15:45 -07:00
broadcast_ether_dst.sh
selftests: net: add test for destination in broadcast packets
2025-09-09 11:29:58 +02:00
broadcast_pmtu.sh
selftests: net: add test for variable PMTU in broadcast routes
2025-07-14 17:29:41 -07:00
busy_poll_test.sh
selftests: net: move wait_local_port_listen to lib.sh
2025-05-27 17:31:42 -07:00
busy_poller.c
selftests: net: cleanup busy_poller.c
2024-12-06 17:42:15 -08:00
cmsg_ip.sh
selftests/net: expand cmsg_ip with MSG_MORE
2025-03-10 13:13:04 -07:00
cmsg_sender.c
selftests: net: avoid memory leak
2025-09-02 16:55:00 -07:00
cmsg_so_mark.sh
selftests/net: convert cmsg tests to make them run in unique namespace
2023-12-05 13:00:56 +01:00
cmsg_so_priority.sh
selftests: net: test SO_PRIORITY ancillary data with cmsg_sender
2024-12-16 18:14:12 -08:00
cmsg_time.sh
selftests: net: give up on the cmsg_time accuracy on slow machines
2025-01-17 18:36:14 -08:00
config
selftests: net: sort configs
2025-10-06 13:12:59 -07:00
drop_monitor_tests.sh
selftests: net: lib: Add kill_process
2024-11-15 16:39:19 -08:00
epoll_busy_poll.c
selftest: epoll_busy_poll: Fix spelling mistake "couldnt" -> "couldn't"
2024-05-13 13:53:53 -07:00
fcnal-ipv4.sh
selftests: net: run groups from fcnal-test in parallel
2025-09-09 15:34:11 -07:00
fcnal-ipv6.sh
selftests: net: run groups from fcnal-test in parallel
2025-09-09 15:34:11 -07:00
fcnal-other.sh
selftests: net: run groups from fcnal-test in parallel
2025-09-09 15:34:11 -07:00
fcnal-test.sh
selftests: Replace sleep with slowwait
2025-09-11 17:57:21 -07:00
fdb_flush.sh
selftests: net: Fix few spelling mistakes
2025-02-18 18:10:31 -08:00
fdb_notify.sh
selftests: net: lib: Rename ip_link_set_master() to adf_*
2025-09-26 17:48:37 -07:00
fib_nexthop_multiprefix.sh
selftests/net: convert fib_nexthop_multiprefix to run it in unique namespace
2023-12-14 18:38:35 -08:00
fib_nexthop_nongw.sh
selftests/net: convert fib_nexthop_nongw.sh to run it in unique namespace
2023-12-14 18:38:35 -08:00
fib_nexthops.sh
selftests: fib_nexthops: Add test cases for FDB status change
2025-09-23 17:01:05 -07:00
fib_rule_tests.sh
selftests: net: remove redundant rp_filter configuration
2025-05-12 18:10:55 -07:00
fib_tests.sh
selftests: net: remove redundant rp_filter configuration
2025-05-12 18:10:55 -07:00
fib-onlink-tests.sh
selftests/net: convert fib-onlink-tests.sh to run it in unique namespace
2023-12-14 18:38:35 -08:00
fin_ack_lat.c
…
fin_ack_lat.sh
…
fq_band_pktlimit.sh
selftests/net: calibrate fq_band_pktlimit
2024-01-31 11:11:09 +00:00
gre_gso.sh
selftests/net: convert gre_gso.sh to run it in unique namespace
2023-12-23 00:26:32 +00:00
gre_ipv6_lladdr.sh
selftests: Add IPv6 multicast route generation tests for GRE devices.
2025-07-10 18:11:04 -07:00
gro.c
selftests/net: use destination options instead of hop-by-hop
2025-10-31 17:33:17 -07:00
gro.sh
selftests/net: test ipip packets in gro.sh
2025-09-25 12:42:49 +02:00
hwtstamp_config.c
selftests/net: replace manual array size calc with ARRAYSIZE macro.
2023-07-18 17:43:51 -07:00
icmp_redirect.sh
selftests: net: remove redundant rp_filter configuration
2025-05-12 18:10:55 -07:00
icmp.sh
sleftests/net: convert icmp.sh to run it in unique namespace
2023-12-05 13:00:56 +01:00
in_netns.sh
…
io_uring_zerocopy_tx.c
selftests/net: Extract uring helpers to be reusable
2023-10-19 16:42:03 -06:00
io_uring_zerocopy_tx.sh
selftests/net: optmem_max became per netns
2023-12-15 11:01:27 +00:00
ioam6_parser.c
selftests: net: add new ioam tests
2024-10-04 15:34:07 -07:00
ioam6.sh
selftests: net: add new ioam tests
2024-10-04 15:34:07 -07:00
ip6_gre_headroom.sh
…
ip_defrag.c
…
ip_defrag.sh
…
ip_local_port_range.c
selftests/net: fix uninitialized variables
2024-05-07 17:22:18 -07:00
ip_local_port_range.sh
selftests/net: ensure mptcp is enabled in netns
2025-02-25 18:13:28 -08:00
ipsec.c
selftests/net/ipsec: Fix Null pointer dereference in rtattr_pack()
2025-01-20 11:25:25 -08:00
ipv6_flowlabel_mgr.c
…
ipv6_flowlabel.c
…
ipv6_flowlabel.sh
…
ipv6_force_forwarding.sh
ipv6: add force_forwarding sysctl to enable per-interface forwarding
2025-07-25 13:06:19 -07:00
ipv6_fragmentation.c
selftests: net: add test for ipv6 fragmentation
2025-09-09 11:43:59 +02:00
ipv6_route_update_soft_lockup.sh
selftests: net: move wait_local_port_listen to lib.sh
2025-05-27 17:31:42 -07:00
l2_tos_ttl_inherit.sh
…
l2tp.sh
selftests/net: convert l2tp.sh to run it in unique namespace
2023-12-05 13:00:56 +01:00
lib.sh
selftests: net: lib: Rename bridge_vlan_add() to adf_*
2025-09-26 17:48:39 -07:00
link_netns.py
selftests: net: Add test cases for link and peer netns
2025-02-21 15:28:03 -08:00
lwt_dst_cache_ref_loop.sh
selftests: net: test for lwtunnel dst ref loops
2025-03-20 11:25:52 +01:00
Makefile
selftests: net: unify the Makefile formats
2025-10-06 13:14:06 -07:00
msg_zerocopy.c
selftest: net: extend msg_zerocopy test with forwarding
2025-07-02 15:07:16 -07:00
msg_zerocopy.sh
selftest: net: extend msg_zerocopy test with forwarding
2025-07-02 15:07:16 -07:00
nat6to4.bpf.c
selftests: net: name bpf objects consistently and simplify Makefile
2024-04-24 20:15:45 -07:00
nat6to4.sh
selftests: net: add test case for NAT46 looping back dst
2025-06-11 17:02:29 -07:00
ndisc_unsolicited_na_test.sh
selftests/net: convert ndisc_unsolicited_na_test.sh to run it in unique namespace
2023-12-05 13:00:56 +01:00
netdev-l2addr.sh
selftests: net: add netdev-l2addr.sh for testing L2 address functionality
2025-07-11 17:00:18 -07:00
netdevice.sh
selftests: net: Use XFAIL for operations not supported by the driver
2024-08-22 16:56:06 -07:00
netlink-dumps.c
selftests: net: make the dump test less sensitive to mem accounting
2025-09-08 12:57:05 -07:00
netns-name.sh
selftests: net: use netdevsim in netns test
2025-04-03 15:32:09 -07:00
netns-sysctl.sh
selftests: net: tests net.core.{r,w}mem_{default,max} sysctls in a netns
2024-06-01 16:03:21 -07:00
nettest.c
selftests: nettest: Fix typo in log and error messages for clarity
2025-06-17 16:22:59 -07:00
nl_netdev.py
net: define an enum for the napi threaded state
2025-07-24 18:34:55 -07:00
pmtu.sh
selftests: net: speed up pmtu.sh by avoiding unnecessary cleanup
2025-09-09 16:26:44 -07:00
proc_net_pktgen.c
selftest: net: update proc_net_pktgen (add more imix_weights test cases)
2025-03-24 12:01:38 -07:00
psock_fanout.c
selftests: net/psock_fanout: unbound socket fanout
2024-10-15 09:52:36 -07:00
psock_lib.h
selftests: centralise maybe-unused definition in kselftest.h
2025-09-13 16:55:16 -07:00
psock_snd.c
…
psock_snd.sh
…
psock_tpacket.c
selftests/net: Ensure assert() triggers in psock_tpacket.c
2025-08-11 20:12:23 -07:00
reuseaddr_conflict.c
selftests: reuseaddr_conflict: add missing new line at the end of the output
2024-04-01 20:42:45 -07:00
reuseaddr_ports_exhausted.c
selftests: net: fix grammar in reuseaddr_ports_exhausted.c log message
2025-02-17 16:34:36 -08:00
reuseaddr_ports_exhausted.sh
…
reuseport_addr_any.c
selftest: net: Remove DCCP bits.
2025-04-11 18:58:10 -07:00
reuseport_addr_any.sh
…
reuseport_bpf_cpu.c
…
reuseport_bpf_numa.c
…
reuseport_bpf.c
…
reuseport_dualstack.c
…
route_hint.sh
selftests: net: add test for dst hint mechanism with directed broadcast addresses
2025-08-25 16:07:16 -07:00
route_localnet.sh
selftests: net: change ifconfig with ip command
2023-10-24 13:53:39 -07:00
rps_default_mask.sh
selftests: net: fix spelling and grammar mistakes
2025-09-01 13:08:07 -07:00
rtnetlink_notification.sh
selftest: add selftest for anycast notifications
2025-06-22 17:32:04 +01:00
rtnetlink.py
netlink: specs: rt_addr: pull the ifa- prefix out of the names
2025-04-04 07:36:06 -07:00
rtnetlink.sh
selftests: net: check jq command is supported
2025-10-14 15:12:18 +02:00
run_afpackettests
…
run_netsocktests
…
rxtimestamp.c
net-timestamp: add selftests for SOF_TIMESTAMPING_OPT_RX_FILTER
2024-09-10 16:55:23 -07:00
rxtimestamp.sh
…
sample_map_ret0.bpf.c
selftests: net: declare section names for bpf_offload
2024-04-10 14:03:12 -07:00
sample_ret0.bpf.c
selftests: net: declare section names for bpf_offload
2024-04-10 14:03:12 -07:00
sctp_hello.c
selftests: net: fix server bind failure in sctp_vrf.sh
2025-10-20 16:41:33 -07:00
sctp_vrf.sh
selftests: net: fix server bind failure in sctp_vrf.sh
2025-10-20 16:41:33 -07:00
settings
selftests/net: convert fcnal-test.sh to run it in unique namespace
2023-12-14 18:38:35 -08:00
setup_loopback.sh
selftests: net: Remove executable bits from library scripts
2024-02-01 08:36:29 -08:00
setup_veth.sh
selftests: net: bump GRO timeout for gro/setup_veth
2025-03-12 13:20:04 -07:00
sk_bind_sendto_listen.c
…
sk_connect_zero_addr.c
…
sk_so_peek_off.c
selftests: add selftest for UDP SO_PEEK_OFF support
2024-09-04 13:10:43 +01:00
skf_net_off.c
selftests/net: test sk_filter support for SKF_NET_OFF on frags
2025-04-09 20:02:51 -07:00
skf_net_off.sh
selftests/net: test sk_filter support for SKF_NET_OFF on frags
2025-04-09 20:02:51 -07:00
so_incoming_cpu.c
selftest: Don't reuse port for SO_INCOMING_CPU test.
2024-01-23 10:48:07 +01:00
so_netns_cookie.c
…
so_rcv_listener.c
selftests: net: add support for testing SO_RCVMARK and SO_RCVPRIORITY
2025-02-17 16:45:19 -08:00
so_txtime.c
selftests/net: ignore timing errors in so_txtime if KSFT_MACHINE_SLOW
2024-02-06 10:19:06 +01:00
so_txtime.sh
selftests: net: cope with slow env in so_txtime.sh test
2024-02-13 10:10:44 -08:00
socket.c
selftests/net/socket.c: removed warnings from unused returns
2025-08-20 19:26:21 -07:00
srv6_end_dt4_l3vpn_test.sh
selftests: net: use setup_ns for SRv6 tests and remove rp_filter configuration
2025-05-12 18:10:55 -07:00
srv6_end_dt6_l3vpn_test.sh
selftests/net: convert srv6_end_dt6_l3vpn_test.sh to run it in unique namespace
2023-12-14 18:38:35 -08:00
srv6_end_dt46_l3vpn_test.sh
selftests: net: use setup_ns for SRv6 tests and remove rp_filter configuration
2025-05-12 18:10:55 -07:00
srv6_end_dx4_netfilter_test.sh
selftests: add selftest for the SRv6 End.DX4 behavior with netfilter
2024-06-19 18:42:10 +02:00
srv6_end_dx6_netfilter_test.sh
selftests: add selftest for the SRv6 End.DX6 behavior with netfilter
2024-06-19 18:42:10 +02:00
srv6_end_flavors_test.sh
selftests: net: Fix spellings
2025-05-20 18:14:08 -07:00
srv6_end_next_csid_l3vpn_test.sh
selftests: seg6: fix instaces typo in comments
2025-07-01 19:32:45 -07:00
srv6_end_x_next_csid_l3vpn_test.sh
selftests: seg6: fix instaces typo in comments
2025-07-01 19:32:45 -07:00
srv6_hencap_red_l3vpn_test.sh
selftests: seg6: fix instaces typo in comments
2025-07-01 19:32:45 -07:00
srv6_hl2encap_red_l2vpn_test.sh
selftests: seg6: fix instaces typo in comments
2025-07-01 19:32:45 -07:00
stress_reuseport_listen.c
…
stress_reuseport_listen.sh
selftests/net: convert stress_reuseport_listen.sh to run it in unique namespace
2023-12-23 00:26:32 +00:00
tap.c
…
tcp_fastopen_backup_key.c
…
tcp_fastopen_backup_key.sh
…
tcp_inq.c
…
tcp_mmap.c
selftests/net: report rcv_mss in tcp_mmap
2023-08-02 11:40:49 +01:00
tcp_port_share.c
selftests/net: Test tcp port reuse after unbinding a socket
2025-09-23 10:12:15 +02:00
test_bpf.sh
…
test_bridge_backup_port.sh
selftests: net: Test bridge backup port when port is administratively down
2025-08-14 17:45:36 -07:00
test_bridge_neigh_suppress.sh
selftests: test_bridge_neigh_suppress: Test unicast ARP/NS with suppression
2025-04-09 19:13:43 -07:00
test_ingress_egress_chaining.sh
…
test_neigh.sh
selftests: net: Fix flaky neighbor garbage collection test
2025-08-01 13:51:41 -07:00
test_so_rcv.sh
selftests: net: add support for testing SO_RCVMARK and SO_RCVPRIORITY
2025-02-17 16:45:19 -08:00
test_vxlan_fdb_changelink.sh
selftests: net: lib: Rename ip_link_set_up() to adf_*
2025-09-26 17:48:37 -07:00
test_vxlan_mdb.sh
selftests: vxlan_mdb: Fix failures with old libnet
2024-03-26 12:29:25 +01:00
test_vxlan_nh.sh
selftests: net: Add a selftest for VXLAN with FDB nexthop groups
2025-09-02 16:57:00 -07:00
test_vxlan_nolocalbypass.sh
selftests/net: convert test_vxlan_nolocalbypass.sh to run it in unique namespace
2023-12-08 12:12:16 +00:00
test_vxlan_under_vrf.sh
selftests/net: convert test_vxlan_under_vrf.sh to run it in unique namespace
2023-12-08 12:12:16 +00:00
test_vxlan_vnifiltering.sh
selftests: net: use slowwait to make sure IPv6 setup finished
2025-06-19 15:24:09 +02:00
tfo_passive.sh
selftest: net: Fix error message if empty variable
2025-09-26 15:23:33 -07:00
tfo.c
selftests: net: add passive TFO test binary
2025-06-18 18:30:51 -07:00
timestamping.c
…
tls.c
selftests: tls: add test for short splice due to full skmsg
2025-10-15 17:41:46 -07:00
toeplitz_client.sh
…
toeplitz.c
…
toeplitz.sh
selftests/net: use unique netns name for setup_loopback.sh setup_veth.sh
2023-12-23 00:26:32 +00:00
traceroute.sh
selftests: traceroute: Add VRF tests
2025-09-11 12:22:38 +02:00
tun.c
…
txring_overwrite.c
…
txtimestamp.c
selftests: txtimestamp: add SCM_TS_OPT_ID test
2024-10-04 11:52:20 -07:00
txtimestamp.sh
selftests: txtimestamp: add SCM_TS_OPT_ID test
2024-10-04 11:52:20 -07:00
udpgro_bench.sh
selftests: net: move wait_local_port_listen to lib.sh
2025-05-27 17:31:42 -07:00
udpgro_frglist.sh
selftests: net: move wait_local_port_listen to lib.sh
2025-05-27 17:31:42 -07:00
udpgro_fwd.sh
selftests: net: move wait_local_port_listen to lib.sh
2025-05-27 17:31:42 -07:00
udpgro.sh
selftests: net: increase inter-packet timeout in udpgro.sh
2025-07-15 15:26:47 +02:00
udpgso_bench_rx.c
selftests: net: cut more slack for gro fwd tests.
2024-02-02 21:10:36 -08:00
udpgso_bench_tx.c
…
udpgso_bench.sh
selftests/net: call sendmmsg via udpgso_bench.sh
2024-12-04 19:22:20 -08:00
udpgso.c
udp: gso: do not drop small packets when PMTU reduces
2025-02-03 10:13:27 +00:00
udpgso.sh
selftests/net: Add test coverage for UDP GSO software fallback
2024-06-28 18:13:00 -07:00
unicast_extensions.sh
selftests: net: add helper for checking if nettest is available
2024-08-22 12:55:47 +02:00
veth.sh
selftests: net: use the dummy bpf from net/lib
2025-03-31 16:44:25 -07:00
vlan_bridge_binding.sh
selftests: net: check jq command is supported
2025-10-14 15:12:18 +02:00
vlan_hw_filter.sh
selftests: avoid using ifconfig
2025-08-01 14:40:19 -07:00
vrf_route_leaking.sh
selftests: net: use slowwait to stabilize vrf_route_leaking test
2025-06-19 15:24:08 +02:00
vrf_strict_mode_test.sh
selftests/net: convert vrf_strict_mode_test.sh to run it in unique namespace
2023-12-08 12:12:16 +00:00
vrf-xfrm-tests.sh
selftests/net: convert vrf-xfrm-tests.sh to run it in unique namespace
2023-12-08 12:12:16 +00:00
xfrm_policy_add_speed.sh
selftests: add xfrm policy insertion speed test script
2024-08-24 09:55:01 +02:00
xfrm_policy.sh
selftests/net: reduce xfrm_policy test time
2024-05-16 19:30:12 -07:00
ynl.mk
selftests: net: move netlink-dumps back to progs
2025-09-08 12:57:05 -07:00