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* tc-testing: Restore original behaviour for namespaces in tdcLucas Bates2019-06-251-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch restores the original behaviour for tdc prior to the introduction of the plugin system, where the network namespace functionality was split from the main script. It introduces the concept of required plugins for testcases, and will automatically load any plugin that isn't already enabled when said plugin is required by even one testcase. Additionally, the -n option for the nsPlugin is deprecated so the default action is to make use of the namespaces. Instead, we introduce -N to not use them, but still create the veth pair. buildebpfPlugin's -B option is also deprecated. If a test cases requires the features of a specific plugin in order to pass, it should instead include a new key/value pair describing plugin interactions: "plugins": { "requires": "buildebpfPlugin" }, A test case can have more than one required plugin: a list can be inserted as the value for 'requires'. Signed-off-by: Lucas Bates <lucasb@mojatatu.com> Acked-by: Davide Caratti <dcaratti@redhat.com> Tested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/sched: act_bpf: validate the control action inside init()Davide Caratti2019-03-211-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the following script: # tc filter add dev crash0 egress matchall \ > action bpf bytecode '1,6 0 0 4294967295' pass index 90 # tc actions replace action bpf \ > bytecode '1,6 0 0 4294967295' goto chain 42 index 90 cookie c1a0c1a0 # tc action show action bpf had the following output: Error: Failed to init TC action chain. We have an error talking to the kernel total acts 1 action order 0: bpf bytecode '1,6 0 0 4294967295' default-action goto chain 42 index 90 ref 2 bind 1 cookie c1a0c1a0 Then, the first packet transmitted by crash0 made the kernel crash: RIP: 0010:tcf_action_exec+0xb8/0x100 Code: 00 00 00 20 74 1d 83 f8 03 75 09 49 83 c4 08 4d 39 ec 75 bc 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 49 8b 97 a8 00 00 00 <48> 8b 12 48 89 55 00 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 RSP: 0018:ffffb3a0803dfa90 EFLAGS: 00010246 RAX: 000000002000002a RBX: ffff942b347ada00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffb3a08034d038 RDI: ffff942b347ada00 RBP: ffffb3a0803dfb30 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffb3a0803dfb0c R12: ffff942b3b682b00 R13: ffff942b3b682b08 R14: 0000000000000001 R15: ffff942b3b682f00 FS: 00007f6160a72740(0000) GS:ffff942b3da80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000795a4002 CR4: 00000000001606e0 Call Trace: tcf_classify+0x58/0x120 __dev_queue_xmit+0x40a/0x890 ? ip_finish_output2+0x16f/0x430 ip_finish_output2+0x16f/0x430 ? ip_output+0x69/0xe0 ip_output+0x69/0xe0 ? ip_forward_options+0x1a0/0x1a0 ip_send_skb+0x15/0x40 raw_sendmsg+0x8e1/0xbd0 ? sched_clock+0x5/0x10 ? sched_clock_cpu+0xc/0xa0 ? try_to_wake_up+0x54/0x480 ? ldsem_down_read+0x3f/0x280 ? _cond_resched+0x15/0x40 ? down_read+0xe/0x30 ? copy_termios+0x1e/0x70 ? tty_mode_ioctl+0x1b6/0x4c0 ? sock_sendmsg+0x36/0x40 sock_sendmsg+0x36/0x40 __sys_sendto+0x10e/0x140 ? do_vfs_ioctl+0xa4/0x640 ? handle_mm_fault+0xdc/0x210 ? syscall_trace_enter+0x1df/0x2e0 ? __audit_syscall_exit+0x216/0x260 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x5b/0x180 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f615f7e3c03 Code: 48 8b 0d 90 62 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 9d c3 2c 00 00 75 13 49 89 ca b8 2c 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 4b cc 00 00 48 89 04 24 RSP: 002b:00007ffee5d8cc28 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055a4f28f1700 RCX: 00007f615f7e3c03 RDX: 0000000000000040 RSI: 000055a4f28f1700 RDI: 0000000000000003 RBP: 00007ffee5d8e340 R08: 000055a4f28ee510 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000040 R13: 000055a4f28f16c0 R14: 000055a4f28ef69c R15: 0000000000000080 Modules linked in: act_bpf veth ip6table_filter ip6_tables iptable_filter binfmt_misc ext4 mbcache crct10dif_pclmul jbd2 crc32_pclmul snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_seq snd_seq_device snd_pcm aesni_intel crypto_simd cryptd glue_helper pcspkr joydev virtio_balloon snd_timer snd i2c_piix4 soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs ata_generic pata_acpi qxl drm_kms_helper virtio_blk virtio_net virtio_console net_failover failover syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crc32c_intel ata_piix serio_raw libata virtio_pci virtio_ring virtio floppy dm_mirror dm_region_hash dm_log dm_mod CR2: 0000000000000000 Validating the control action within tcf_bpf_init() proved to fix the above issue. A TDC selftest is added to verify the correct behavior. Fixes: db50514f9a9c ("net: sched: add termination action to allow goto chain") Fixes: 97763dc0f401 ("net_sched: reject unknown tcfa_action values") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tc-testing: use a plugin to build eBPF programDavide Caratti2018-10-051-6/+2Star
| | | | | | | | | use a TDC plugin, instead of building eBPF programs in the 'setup' stage. '-B' argument can be used to build eBPF programs in $EBPFDIR directory, in the 'pre-suite' stage. Binaries are then cleaned in 'post-suite' stage. Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tc-testing: fix build of eBPF programsDavide Caratti2018-10-051-8/+8
| | | | | | | | | | rely on uAPI headers in the current kernel tree, rather than requiring the correct version installed on the test system. While at it, group all sections in a single binary and test the 'section' parameter. Reported-by: Lucas Bates <lucasb@mojatatu.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tc-testing: fix tdc tests for 'bpf' actionDavide Caratti2018-05-101-3/+8
| | | | | | | | | | | | | | - correct a typo in the value of 'matchPattern' of test 282d, potentially causing false negative - allow errors when 'teardown' executes '$TC action flush action bpf' in test 282d, to fix false positive when it is run with act_bpf unloaded - correct the value of 'matchPattern' in test e939, causing false positive in case the BPF JIT is enabled Fixes: 440ea4ae1828 ("tc-testing: add selftests for 'bpf' action") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Lucas Bates <lucasb@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* tc-testing: add selftests for 'bpf' actionDavide Caratti2018-03-231-0/+289
Test d959: Add cBPF action with valid bytecode Test f84a: Add cBPF action with invalid bytecode Test e939: Add eBPF action with valid object-file Test 282d: Add eBPF action with invalid object-file Test d819: Replace cBPF bytecode and action control Test 6ae3: Delete cBPF action Test 3e0d: List cBPF actions Test 55ce: Flush BPF actions Test ccc3: Add cBPF action with duplicate index Test 89c7: Add cBPF action with invalid index Test 7ab9: Add cBPF action with cookie Changes since v1: - use index=2^32-1 in test ccc3, add tests 7a89, 89c7 (thanks Roman Mashak) - added test 282d Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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