> On 12 Nov 2019, at 10:19, Dimitar Ivanov <d...@telco.com> wrote: > > Sorry for missing post to vpp-dev. > So i'm using correct TAP interface.
yes, Looks like a bug. Somebidy will need to debug it. If you have time and gdb skills, try to find out if vnet_feature_start_device_input_x1 in src/vnet/devices/virtio/node.c is hit… From the trace you can see that next-index is 4. "show node virtio-input" will likely tell you that next-index 4 is ethernet-input. vnet_feature_start_device_input_x1 i supposed to change next-index to whatever next-index for mactime is… > Here is some trace with activated mactime on tap0 > > vpp# show trace > Limiting display to 50 packets. To display more specify max. > ------------------- Start of thread 0 vpp_main ------------------- > Packet 1 > > 00:02:42:141421: virtio-input > virtio: hw_if_index 2 next-index 4 vring 0 len 98 > hdr: flags 0x00 gso_type 0x00 hdr_len 0 gso_size 0 csum_start 0 > csum_offset 0 num_buffers 1 > 00:02:42:141425: ethernet-input > IP4: 52:54:00:30:80:22 -> 74:d4:35:9d:21:ac > 00:02:42:141426: l2-input > l2-input: sw_if_index 2 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 > 00:02:42:141427: l2-learn > l2-learn: sw_if_index 2 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 bd_index > 1 > 00:02:42:141428: l2-fwd > l2-fwd: sw_if_index 2 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 > bd_index 1 result [0x1000000000001, 1] none > 00:02:42:141430: l2-output > l2-output: sw_if_index 1 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 > data 08 00 45 00 00 54 37 57 00 00 40 01 > 00:02:42:141430: host-data0-output > host-data0 l2_hdr_offset_valid l3_hdr_offset_valid > IP4: 52:54:00:30:80:22 -> 74:d4:35:9d:21:ac > ICMP: 10.3.72.59 -> 10.3.72.254 > tos 0x00, ttl 64, length 84, checksum 0x9e13 > fragment id 0x3757 > ICMP echo_reply checksum 0x1f49 > > Packet 2 > > 00:02:43:142927: virtio-input > virtio: hw_if_index 2 next-index 4 vring 0 len 98 > hdr: flags 0x00 gso_type 0x00 hdr_len 0 gso_size 0 csum_start 0 csum_offset > 0 num_buffers 1 > 00:02:43:142931: ethernet-input > IP4: 52:54:00:30:80:22 -> 74:d4:35:9d:21:ac > 00:02:43:142932: l2-input > l2-input: sw_if_index 2 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 > 00:02:43:142934: l2-learn > l2-learn: sw_if_index 2 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 bd_index > 1 > 00:02:43:142935: l2-fwd > l2-fwd: sw_if_index 2 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 bd_index > 1 > result [0x1000000000001, 1] none > 00:02:43:142936: l2-output > l2-output: sw_if_index 1 dst 74:d4:35:9d:21:ac src 52:54:00:30:80:22 data 08 > 0 > 0 45 00 00 54 38 0b 00 00 40 01 > 00:02:43:142937: host-data0-output > host-data0 l2_hdr_offset_valid l3_hdr_offset_valid > IP4: 52:54:00:30:80:22 -> 74:d4:35:9d:21:ac > ICMP: 10.3.72.59 -> 10.3.72.254 > tos 0x00, ttl 64, length 84, checksum 0x9d5f > fragment id 0x380b > ICMP echo_reply checksum 0x3841 > > Here is a features configured: > > vpp# show interface tap0 features > Feature paths configured on tap0... > > nsh-eth-output: > none configured > > nsh-output: > none configured > > mpls-output: > none configured > > mpls-input: > mpls-not-enabled > > arp: > arp-disabled > > ip6-drop: > none configured > > ip6-punt: > none configured > > ip6-local: > none configured > > ip6-output: > none configured > > ip6-multicast: > ip6-not-enabled > > ip6-unicast: > ip6-not-enabled > > ip4-drop: > none configured > > ip4-punt: > none configured > > ip4-local: > none configured > > ip4-output: > none configured > > ip4-multicast: > ip4-not-enabled > > ip4-unicast: > ip4-not-enabled > > l2-output-nonip: > none configured > > l2-input-nonip: > none configured > > l2-output-ip6: > none configured > > l2-input-ip6: > none configured > > l2-output-ip4: > none configured > > l2-input-ip4: > none configured > > ethernet-output: > none configured > > interface-output: > mactime-tx > > device-input: > mactime > > l2-input: > LEARN (l2-learn) > FWD (l2-fwd) > UU_FLOOD (l2-flood) > FLOOD (l2-flood) > > l2-output: > OUTPUT (interface-output) > > vpp# show node counters > Count Node Reason > 10971 mactime-tx Permitted packets > 14413 l2-output L2 output packets > 14510 l2-learn L2 learn packets > 147 l2-learn L2 learn misses > 17 l2-learn L2 mac moves > 14510 l2-input L2 input packets > 13 l2-fwd Reflection Drop > 12872 l2-flood L2 flood packets > 84 l2-flood L2 replication complete > > As is seen from counters there is no mactime (rx part) counters. > > Any ideas ? > > On Tue, Nov 12, 2019 at 10:25 AM Damjan Marion <dmar...@me.com> wrote: >> >> >> >>> On 12 Nov 2019, at 08:57, Dimitar Ivanov <d...@telco.com> wrote: >>> >>> Hi All, >>> I need a help in investigation of one problem with TAP interface. I try to >>> develop plugin that inspects packets send from Host Linux via TAP interface >>> and take some actions on them. Scenario is like this: >>> Linux Host Tap -->vpp tap0 --> other vpp interface. My node is set to be >>> visited before 'ethernet-input'. Strange is that when Linux starts to send >>> packets over tap interface my node is not called. I have checked counters >>> of all nodes and see that event ethernet-input node counters are not >>> increment. Only nodes that are activated (regarding counters) are l2-input, >>> l2-fwd and etc. >>> I was with impression that my code is not correct. In order to isolate >>> mistakes from my side, i have activate mactime feature on same interface. >>> The result was that mactime-tx is activated, but mactime - not. What is >>> special on tap interface and why flow is not same like other interfaces ? >>> Do You have some suggestion how to install my node in order to be on RX >>> flow of TAP interface ? VPP version is v19.08.1. -=-=-=-=-=-=-=-=-=-=-=- >>> Links: You receive all messages sent to this group. >> >> It may be that you are using old tap code which doesn’t support device-input >> feature arc. >> >> Do you use “create tap ...” command? > -=-=-=-=-=-=-=-=-=-=-=- > Links: You receive all messages sent to this group. > > View/Reply Online (#14569): https://lists.fd.io/g/vpp-dev/message/14569 > Mute This Topic: https://lists.fd.io/mt/54144964/675642 > Mute #vpp: https://lists.fd.io/mk?hashtag=vpp&subid=1480514 > Group Owner: vpp-dev+ow...@lists.fd.io > Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [dmar...@me.com] > -=-=-=-=-=-=-=-=-=-=-=-
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