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32dfd742f0
Add a selftest that verifies the dst_cache in seg6 lwtunnel is not
shared between the input (forwarding) and output (locally generated)
paths.
The test creates three namespaces (ns_src, ns_router, ns_dst)
connected in a line. An SRv6 encap route on ns_router encapsulates
traffic destined to cafe::1 with SID fc00::100. The SID is
reachable only for forwarded traffic (from ns_src) via an ip rule
matching the ingress interface (iif veth-r0 lookup 100), and
blackholed in the main table.
The test verifies that:
1. A packet generated locally on ns_router does not reach
ns_dst with an empty cache, since the SID is blackholed;
2. A forwarded packet from ns_src populates the input cache
from table 100 and reaches ns_dst;
3. A packet generated locally on ns_router still does not
reach ns_dst after the input cache is populated,
confirming the output path does not reuse the input
cache entry.
Both the forwarded and local packets are pinned to the same CPU
with taskset, since dst_cache is per-cpu.
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Reviewed-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Justin Iurman <justin.iurman@gmail.com>
Link: https://patch.msgid.link/20260404004405.4057-3-andrea.mayer@uniroma2.it
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
232 lines
4.6 KiB
Makefile
232 lines
4.6 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Makefile for net selftests
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CFLAGS += -Wall -Wl,--no-as-needed -O2 -g
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CFLAGS += -I../../../../usr/include/ $(KHDR_INCLUDES)
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# Additional include paths needed by kselftest.h
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CFLAGS += -I../
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TEST_PROGS := \
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altnames.sh \
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amt.sh \
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arp_ndisc_evict_nocarrier.sh \
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arp_ndisc_untracked_subnets.sh \
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bareudp.sh \
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big_tcp.sh \
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bind_bhash.sh \
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bpf_offload.py \
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bridge_vlan_dump.sh \
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broadcast_ether_dst.sh \
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broadcast_pmtu.sh \
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busy_poll_test.sh \
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cmsg_ip.sh \
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cmsg_so_mark.sh \
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cmsg_so_priority.sh \
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cmsg_time.sh \
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double_udp_encap.sh \
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drop_monitor_tests.sh \
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fcnal-ipv4.sh \
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fcnal-ipv6.sh \
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fcnal-other.sh \
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fdb_flush.sh \
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fdb_notify.sh \
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fib-onlink-tests.sh \
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fib_nexthop_multiprefix.sh \
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fib_nexthop_nongw.sh \
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fib_nexthops.sh \
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fib_rule_tests.sh \
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fib_tests.sh \
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fin_ack_lat.sh \
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fq_band_pktlimit.sh \
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gre_gso.sh \
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gre_ipv6_lladdr.sh \
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icmp.sh \
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icmp_redirect.sh \
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io_uring_zerocopy_tx.sh \
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ioam6.sh \
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ip6_gre_headroom.sh \
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ip_defrag.sh \
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ip_local_port_range.sh \
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ipv6_flowlabel.sh \
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ipv6_force_forwarding.sh \
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ipv6_route_update_soft_lockup.sh \
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ipvtap_test.sh \
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l2_tos_ttl_inherit.sh \
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l2tp.sh \
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link_netns.py \
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lwt_dst_cache_ref_loop.sh \
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msg_zerocopy.sh \
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nat6to4.sh \
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ndisc_unsolicited_na_test.sh \
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netdev-l2addr.sh \
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netdevice.sh \
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netns-name.sh \
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netns-sysctl.sh \
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nl_netdev.py \
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pmtu.sh \
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psock_snd.sh \
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reuseaddr_ports_exhausted.sh \
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reuseport_addr_any.sh \
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route_hint.sh \
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route_localnet.sh \
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rps_default_mask.sh \
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rtnetlink.py \
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rtnetlink.sh \
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rtnetlink_notification.sh \
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run_afpackettests \
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run_netsocktests \
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rxtimestamp.sh \
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sctp_vrf.sh \
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skf_net_off.sh \
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so_txtime.sh \
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srv6_end_dt46_l3vpn_test.sh \
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srv6_end_dt4_l3vpn_test.sh \
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srv6_end_dt6_l3vpn_test.sh \
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srv6_end_dx4_netfilter_test.sh \
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srv6_end_dx6_netfilter_test.sh \
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srv6_end_flavors_test.sh \
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srv6_end_next_csid_l3vpn_test.sh \
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srv6_end_x_next_csid_l3vpn_test.sh \
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srv6_hencap_red_l3vpn_test.sh \
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srv6_hl2encap_red_l2vpn_test.sh \
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srv6_iptunnel_cache.sh \
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stress_reuseport_listen.sh \
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tcp_fastopen_backup_key.sh \
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test_bpf.sh \
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test_bridge_backup_port.sh \
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test_bridge_neigh_suppress.sh \
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test_ingress_egress_chaining.sh \
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test_neigh.sh \
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test_so_rcv.sh \
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test_vxlan_fdb_changelink.sh \
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test_vxlan_mdb.sh \
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test_vxlan_nh.sh \
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test_vxlan_nolocalbypass.sh \
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test_vxlan_under_vrf.sh \
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test_vxlan_vnifiltering.sh \
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tfo_passive.sh \
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traceroute.sh \
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txtimestamp.sh \
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udpgro.sh \
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udpgro_bench.sh \
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udpgro_frglist.sh \
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udpgro_fwd.sh \
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udpgso.sh \
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udpgso_bench.sh \
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unicast_extensions.sh \
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veth.sh \
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vlan_bridge_binding.sh \
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vlan_hw_filter.sh \
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vrf-xfrm-tests.sh \
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vrf_route_leaking.sh \
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vrf_strict_mode_test.sh \
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xfrm_policy.sh \
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# end of TEST_PROGS
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TEST_PROGS_EXTENDED := \
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xfrm_policy_add_speed.sh \
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# end of TEST_PROGS_EXTENDED
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TEST_GEN_FILES := \
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bind_bhash \
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cmsg_sender \
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fin_ack_lat \
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hwtstamp_config \
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io_uring_zerocopy_tx \
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ioam6_parser \
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ip_defrag \
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ip_local_port_range \
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ipsec \
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ipv6_flowlabel \
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ipv6_flowlabel_mgr \
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msg_zerocopy \
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nettest \
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psock_fanout \
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psock_snd \
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psock_tpacket \
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reuseaddr_ports_exhausted \
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reuseport_addr_any \
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rxtimestamp \
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sctp_hello \
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skf_net_off \
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so_netns_cookie \
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so_rcv_listener \
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so_txtime \
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socket \
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stress_reuseport_listen \
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tcp_fastopen_backup_key \
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tcp_inq \
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tcp_mmap \
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tfo \
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timestamping \
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txring_overwrite \
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txtimestamp \
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udpgso \
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udpgso_bench_rx \
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udpgso_bench_tx \
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# end of TEST_GEN_FILES
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TEST_GEN_PROGS := \
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bind_timewait \
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bind_wildcard \
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epoll_busy_poll \
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icmp_rfc4884 \
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ipv6_fragmentation \
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proc_net_pktgen \
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reuseaddr_conflict \
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reuseport_bpf \
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reuseport_bpf_cpu \
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reuseport_bpf_numa \
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reuseport_dualstack \
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sk_bind_sendto_listen \
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sk_connect_zero_addr \
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sk_so_peek_off \
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so_incoming_cpu \
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tap \
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tcp_port_share \
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tls \
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# end of TEST_GEN_PROGS
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TEST_FILES := \
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fcnal-test.sh \
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in_netns.sh \
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lib.sh \
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settings \
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# end of TEST_FILES
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# YNL files, must be before "include ..lib.mk"
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YNL_GEN_FILES := busy_poller
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YNL_GEN_PROGS := \
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netlink-dumps \
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tun \
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# end of YNL_GEN_PROGS
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TEST_GEN_FILES += $(YNL_GEN_FILES)
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TEST_GEN_PROGS += $(YNL_GEN_PROGS)
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TEST_GEN_FILES += $(patsubst %.c,%.o,$(wildcard *.bpf.c))
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TEST_INCLUDES := forwarding/lib.sh
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include ../lib.mk
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# YNL build
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YNL_GENS := \
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netdev \
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rt-addr \
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rt-link \
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rt-neigh \
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rt-route \
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# end of YNL_GENS
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include ynl.mk
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$(OUTPUT)/epoll_busy_poll: LDLIBS += -lcap
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$(OUTPUT)/reuseport_bpf_numa: LDLIBS += -lnuma
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$(OUTPUT)/tcp_mmap: LDLIBS += -lpthread -lcrypto
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$(OUTPUT)/tcp_inq: LDLIBS += -lpthread
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$(OUTPUT)/bind_bhash: LDLIBS += -lpthread
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$(OUTPUT)/io_uring_zerocopy_tx: CFLAGS += -I../../../include/
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include bpf.mk
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