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Davide Caratti ee95ef7f8f flow_dissector: fix TTL and TOS dissection on IPv4 fragments 
[ Upstream commit d2126838050ccd1dadf310ffb78b2204f3b032b9 ]

the following command:

 # tc filter add dev $h2 ingress protocol ip pref 1 handle 101 flower \
   $tcflags dst_ip 192.0.2.2 ip_ttl 63 action drop

doesn't drop all IPv4 packets that match the configured TTL / destination
address. In particular, if "fragment offset" or "more fragments" have non
zero value in the IPv4 header, setting of FLOW_DISSECTOR_KEY_IP is simply
ignored. Fix this dissecting IPv4 TTL and TOS before fragment info; while
at it, add a selftest for tc flower's match on 'ip_ttl' that verifies the
correct behavior.

Fixes: 518d8a2e9bad ("net/flow_dissector: add support for dissection of misc ip header fields")
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-05-20 16:06:47 +08:00
..
forwarding flow_dissector: fix TTL and TOS dissection on IPv4 fragments 2021-05-20 16:06:47 +08:00
.gitignore Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Makefile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
config selftests: rtnetlink: load fou module for kci_test_encap_fou() test 2021-03-16 16:38:18 +08:00
fcnal-test.sh vrf: packets with lladdr src needs dst at input with orig_iif when needs strict 2021-03-16 16:42:16 +08:00
fib-onlink-tests.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fib_nexthop_multiprefix.sh selftests: fib_nexthop_multiprefix: fix cleanup() netns deletion 2021-03-16 16:32:55 +08:00
fib_nexthops.sh ipv6: fib6_select_path can not use out path for nexthop objects 2021-03-16 16:31:43 +08:00
fib_rule_tests.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
fib_tests.sh selftests: net: fib_tests: remove duplicate log test 2021-04-12 12:51:36 +08:00
icmp_redirect.sh selftests: disable rp_filter for icmp_redirect.sh 2021-03-16 16:35:06 +08:00
in_netns.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip6_gre_headroom.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_defrag.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ip_defrag.sh selftests: net: ip_defrag: modprobe missing nf_defrag_ipv6 support 2021-03-16 16:32:55 +08:00
ipv6_flowlabel.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ipv6_flowlabel.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ipv6_flowlabel_mgr.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
l2tp.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
msg_zerocopy.c selftests/net: relax cpu affinity requirement in msg_zerocopy test 2021-03-16 16:33:10 +08:00
msg_zerocopy.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
netdevice.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
nettest.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
pmtu.sh tools: selftests: add test for changing routes with PTMU exceptions 2021-04-12 12:51:16 +08:00
psock_fanout.c selftests/net: psock_fanout: fix clang issues for target arch PowerPC 2021-03-16 16:32:50 +08:00
psock_lib.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
psock_snd.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
psock_snd.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
psock_tpacket.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
reuseaddr_conflict.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
reuseport_addr_any.c selftests/net: add definition for SOL_DCCP to fix compilation errors for old libc 2021-03-16 16:25:54 +08:00
reuseport_addr_any.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
reuseport_bpf.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
reuseport_bpf_cpu.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
reuseport_bpf_numa.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
reuseport_dualstack.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
route_localnet.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rtnetlink.sh selftests: rtnetlink: load fou module for kci_test_encap_fou() test 2021-03-16 16:38:18 +08:00
run_afpackettests Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
run_netsocktests Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
so_txtime.c selftests/net: so_txtime: fix clang issues for target arch PowerPC 2021-03-16 16:32:50 +08:00
so_txtime.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
socket.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_fastopen_backup_key.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_fastopen_backup_key.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_inq.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tcp_mmap.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
test_blackhole_dev.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
test_bpf.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
test_vxlan_fdb_changelink.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
test_vxlan_under_vrf.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
tls.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
txring_overwrite.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udpgro.sh selftests: fix the return value for UDP GRO test 2021-04-12 12:51:25 +08:00
udpgro_bench.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udpgso.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udpgso.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udpgso_bench.sh Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
udpgso_bench_rx.c selftests: fix poll error in udpgro.sh 2021-03-16 16:42:28 +08:00
udpgso_bench_tx.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xfrm_policy.sh xfrm: Fix wraparound in xfrm_policy_addr_delta() 2021-04-12 12:51:46 +08:00