linux-stable.git/tools/testing/selftests/netfilter, branch v5.15.209

selftests: nft_nat: ensuring the listening side is up before starting the client

2023-03-17T07:48:54+00:00

[ Upstream commit 2067e7a00aa604b94de31d64f29b8893b1696f26 ]

The test_local_dnat_portonly() function initiates the client-side as
soon as it sets the listening side to the background. This could lead to
a race condition where the server may not be ready to listen. To ensure
that the server-side is up and running before initiating the
client-side, a delay is introduced to the test_local_dnat_portonly()
function.

Before the fix:
  # ./nft_nat.sh
  PASS: netns routing/connectivity: ns0-rthlYrBU can reach ns1-rthlYrBU and ns2-rthlYrBU
  PASS: ping to ns1-rthlYrBU was ip NATted to ns2-rthlYrBU
  PASS: ping to ns1-rthlYrBU OK after ip nat output chain flush
  PASS: ipv6 ping to ns1-rthlYrBU was ip6 NATted to ns2-rthlYrBU
  2023/02/27 04:11:03 socat[6055] E connect(5, AF=2 10.0.1.99:2000, 16): Connection refused
  ERROR: inet port rewrite

After the fix:
  # ./nft_nat.sh
  PASS: netns routing/connectivity: ns0-9sPJV6JJ can reach ns1-9sPJV6JJ and ns2-9sPJV6JJ
  PASS: ping to ns1-9sPJV6JJ was ip NATted to ns2-9sPJV6JJ
  PASS: ping to ns1-9sPJV6JJ OK after ip nat output chain flush
  PASS: ipv6 ping to ns1-9sPJV6JJ was ip6 NATted to ns2-9sPJV6JJ
  PASS: inet port rewrite without l3 address

Fixes: 282e5f8fe907 ("netfilter: nat: really support inet nat without l3 address")
Signed-off-by: Hangbin Liu 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Sasha Levin

netfilter: conntrack: set icmpv6 redirects as RELATED

2022-12-31T12:14:14+00:00

[ Upstream commit 7d7cfb48d81353e826493d24c7cec7360950968f ]

icmp conntrack will set icmp redirects as RELATED, but icmpv6 will not
do this.

For icmpv6, only icmp errors (code <= 128) are examined for RELATED state.
ICMPV6 Redirects are part of neighbour discovery mechanism, those are
handled by marking a selected subset (e.g.  neighbour solicitations) as
UNTRACKED, but not REDIRECT -- they will thus be flagged as INVALID.

Add minimal support for REDIRECTs.  No parsing of neighbour options is
added for simplicity, so this will only check that we have the embeeded
original header (ND_OPT_REDIRECT_HDR), and then attempt to do a flow
lookup for this tuple.

Also extend the existing test case to cover redirects.

Fixes: 9fb9cbb1082d ("[NETFILTER]: Add nf_conntrack subsystem.")
Reported-by: Eric Garver 
Link: https://github.com/firewalld/firewalld/issues/1046
Signed-off-by: Florian Westphal 
Acked-by: Eric Garver 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Sasha Levin

testing: selftests: nft_flowtable.sh: use random netns names

2022-09-05T08:30:12+00:00

[ Upstream commit b71b7bfeac38c7a21c423ddafb29aa6258949df8 ]

"ns1" is a too generic name, use a random suffix to avoid
errors when such a netns exists.  Also allows to run multiple
instances of the script in parallel.

Signed-off-by: Florian Westphal 
Signed-off-by: Sasha Levin

selftests: netfilter: correct PKTGEN_SCRIPT_PATHS in nft_concat_range.sh

2022-06-29T07:03:24+00:00

[ Upstream commit 5d79d8af8dec58bf709b3124d09d9572edd9c617 ]

Before change:
make -C netfilter
 TEST: performance
   net,port                                                      [SKIP]
   perf not supported
   port,net                                                      [SKIP]
   perf not supported
   net6,port                                                     [SKIP]
   perf not supported
   port,proto                                                    [SKIP]
   perf not supported
   net6,port,mac                                                 [SKIP]
   perf not supported
   net6,port,mac,proto                                           [SKIP]
   perf not supported
   net,mac                                                       [SKIP]
   perf not supported

After change:
   net,mac                                                       [ OK ]
     baseline (drop from netdev hook):               2061098pps
     baseline hash (non-ranged entries):             1606741pps
     baseline rbtree (match on first field only):    1191607pps
     set with  1000 full, ranged entries:            1639119pps
ok 8 selftests: netfilter: nft_concat_range.sh

Fixes: 611973c1e06f ("selftests: netfilter: Introduce tests for sets with range concatenation")
Reported-by: kernel test robot 
Signed-off-by: Jie2x Zhou 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Sasha Levin

netfilter: nat: really support inet nat without l3 address

2022-06-14T16:36:16+00:00

[ Upstream commit 282e5f8fe907dc3f2fbf9f2103b0e62ffc3a68a5 ]

When no l3 address is given, priv->family is set to NFPROTO_INET and
the evaluation function isn't called.

Call it too so l4-only rewrite can work.
Also add a test case for this.

Fixes: a33f387ecd5aa ("netfilter: nft_nat: allow to specify layer 4 protocol NAT only")
Reported-by: Yi Chen 
Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Sasha Levin

selftests: netfilter: disable rp_filter on router

2022-02-23T11:03:10+00:00

commit bbe4c0896d25009a7c86285d2ab024eed4374eea upstream.

Some distros may enable rp_filter by default. After ns1 change addr to
10.0.2.99 and set default router to 10.0.2.1, while the connected router
address is still 10.0.1.1. The router will not reply the arp request
from ns1. Fix it by setting the router's veth0 rp_filter to 0.

Before the fix:
  # ./nft_fib.sh
  PASS: fib expression did not cause unwanted packet drops
  Netns nsrouter-HQkDORO2 fib counter doesn't match expected packet count of 1 for 1.1.1.1
  table inet filter {
          chain prerouting {
                  type filter hook prerouting priority filter; policy accept;
                  ip daddr 1.1.1.1 fib saddr . iif oif missing counter packets 0 bytes 0 drop
                  ip6 daddr 1c3::c01d fib saddr . iif oif missing counter packets 0 bytes 0 drop
          }
  }

After the fix:
  # ./nft_fib.sh
  PASS: fib expression did not cause unwanted packet drops
  PASS: fib expression did drop packets for 1.1.1.1
  PASS: fib expression did drop packets for 1c3::c01d

Fixes: 82944421243e ("selftests: netfilter: add fib test case")
Signed-off-by: Yi Chen 
Signed-off-by: Hangbin Liu 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Greg Kroah-Hartman

selftests: netfilter: fix exit value for nft_concat_range

2022-02-23T11:03:10+00:00

commit 2e71ec1a725a794a16e3862791ed43fe5ba6a06b upstream.

When the nft_concat_range test failed, it exit 1 in the code
specifically.

But when part of, or all of the test passed, it will failed the
[ ${passed} -eq 0 ] check and thus exit with 1, which is the same
exit value with failure result. Fix it by exit 0 when passed is not 0.

Fixes: 611973c1e06f ("selftests: netfilter: Introduce tests for sets with range concatenation")
Signed-off-by: Hangbin Liu 
Reviewed-by: Stefano Brivio 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Greg Kroah-Hartman

selftests: netfilter: check stateless nat udp checksum fixup

2022-02-08T17:34:14+00:00

commit aad51ca71ad83273e8826d6cfdcf53c98748d1fa upstream.

Add a test that sends large udp packet (which is fragmented)
via a stateless nft nat rule, i.e. 'ip saddr set 10.2.3.4'
and check that the datagram is received by peer.

On kernels without
commit 4e1860a38637 ("netfilter: nft_payload: do not update layer 4 checksum when mangling fragments")',
this will fail with:

cmp: EOF on /tmp/tmp.V1q0iXJyQF which is empty
-rw------- 1 root root 4096 Jan 24 22:03 /tmp/tmp.Aaqnq4rBKS
-rw------- 1 root root    0 Jan 24 22:03 /tmp/tmp.V1q0iXJyQF
ERROR: in and output file mismatch when checking udp with stateless nat
FAIL: nftables v1.0.0 (Fearless Fosdick #2)

On patched kernels, this will show:
PASS: IP statless for ns2-PFp89amx

Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Greg Kroah-Hartman

selftests: nft_concat_range: add test for reload with no element add/del

2022-02-08T17:34:14+00:00

commit eda0cf1202acf1ef47f93d8f92d4839213431424 upstream.

Add a specific test for the reload issue fixed with
commit 23c54263efd7cb ("netfilter: nft_set_pipapo: allocate pcpu scratch maps on clone").

Add to set, then flush set content + restore without other add/remove in
the transaction.

On kernels before the fix, this test case fails:
  net,mac with reload    [FAIL]

Signed-off-by: Florian Westphal 
Reviewed-by: Stefano Brivio 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Greg Kroah-Hartman

netfilter: selftest: conntrack_vrf.sh: fix file permission

2021-12-16T14:15:31+00:00

When backporting 33b8aad21ac1 ("selftests: netfilter: add a
vrf+conntrack testcase") to this stable branch, the executable bits were
not properly set on the
tools/testing/selftests/netfilter/conntrack_vrf.sh file due to quilt not
honoring them.

Fix this up manually by setting the correct mode.

Reported-by: "Rantala, Tommi T. (Nokia - FI/Espoo)" 
Link: https://lore.kernel.org/r/234d7a6a81664610fdf21ac72730f8bd10d3f46f.camel@nokia.com
Signed-off-by: Greg Kroah-Hartman