The is the output of show trace and show interface
============================================
Packet 36
00:03:26:875694: dpdk-input
VirtualFuncEthernet0/7/0 rx queue 0
buffer 0x4c1b21: current data 0, length 138, buffer-pool 0, ref-count 1,
totlen-nifb 0, trace handle 0x1000023
ext-hdr-valid
l4-cksum-computed l4-cksum-correct
PKT MBUF: port 0, nb_segs 1, pkt_len 138
buf_len 2176, data_len 138, ol_flags 0x182, data_off 128, phys_addr
0xc266c8c0
packet_type 0x691 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0xde0c21da fdir.hi 0x0 fdir.lo 0xde0c21da
Packet Offload Flags
PKT_RX_RSS_HASH (0x0002) RX packet with RSS hash result
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
Packet Types
RTE_PTYPE_L2_ETHER (0x0001) Ethernet packet
RTE_PTYPE_L3_IPV4_EXT_UNKNOWN (0x0090) IPv4 packet with or without
extension headers
RTE_PTYPE_L4_NONFRAG (0x0600) Non-fragmented IP packet
IP4: fa:16:3e:4b:6b:42 -> fa:16:3e:97:04:19 802.1q vlan 1556
IPSEC_ESP: 20.20.99.215 -> 80.80.80.80
tos 0x00, ttl 64, length 120, checksum 0x21c9 dscp CS0 ecn NON_ECN
fragment id 0x0000, flags DONT_FRAGMENT
00:03:26:875702: ethernet-input
frame: flags 0x3, hw-if-index 3, sw-if-index 3
IP4: fa:16:3e:4b:6b:42 -> fa:16:3e:97:04:19 802.1q vlan 1556
00:03:26:875708: ip4-input
IPSEC_ESP: 20.20.99.215 -> 80.80.80.80
tos 0x00, ttl 64, length 120, checksum 0x21c9 dscp CS0 ecn NON_ECN
fragment id 0x0000, flags DONT_FRAGMENT
00:03:26:875714: ip4-lookup
fib 2 dpo-idx 27 flow hash: 0x00000000
IPSEC_ESP: 20.20.99.215 -> 80.80.80.80
tos 0x00, ttl 64, length 120, checksum 0x21c9 dscp CS0 ecn NON_ECN
fragment id 0x0000, flags DONT_FRAGMENT
00:03:26:875715: ip4-local
IPSEC_ESP: 20.20.99.215 -> 80.80.80.80
tos 0x00, ttl 64, length 120, checksum 0x21c9 dscp CS0 ecn NON_ECN
fragment id 0x0000, flags DONT_FRAGMENT
00:03:26:875717: ipsec4-tun-input
IPSec: remote:20.20.99.215 spi:4213 (0x00001075) sa:1 tun:0 seq 1 sa
-2029505104
00:03:26:875719: esp4-decrypt-tun
esp: crypto aes-cbc-256 integrity sha1-96 pkt-seq 1 sa-seq 1 sa-seq-hi 0
00:03:26:875801: ip4-input-no-checksum
TCP: 44.44.44.44 -> 30.30.30.30
tos 0x00, ttl 64, length 60, checksum 0x3cfa dscp CS0 ecn NON_ECN
fragment id 0x692e, flags DONT_FRAGMENT
TCP: 45723 -> 1234
seq. 0x119d35d0 ack 0x00000000
flags 0x02 SYN, tcp header: 40 bytes
window 64240, checksum 0xd6be
00:03:26:875803: ip4-lookup
fib 2 dpo-idx 25 flow hash: 0x00000000
TCP: 44.44.44.44 -> 30.30.30.30
tos 0x00, ttl 64, length 60, checksum 0x3cfa dscp CS0 ecn NON_ECN
fragment id 0x692e, flags DONT_FRAGMENT
TCP: 45723 -> 1234
seq. 0x119d35d0 ack 0x00000000
flags 0x02 SYN, tcp header: 40 bytes
window 64240, checksum 0xd6be
00:03:26:875803: ip4-local
TCP: 44.44.44.44 -> 30.30.30.30
tos 0x00, ttl 64, length 60, checksum 0x3cfa dscp CS0 ecn NON_ECN
fragment id 0x692e, flags DONT_FRAGMENT
TCP: 45723 -> 1234
seq. 0x119d35d0 ack 0x00000000
flags 0x02 SYN, tcp header: 40 bytes
window 64240, checksum 0xd6be
00:03:26:875805: an_ppe_router_input
AN_PPE_ROUTER_INPUT: sw_if_index 1, next index 3
00:03:26:875819: tcp4-input
[0:0][T] :::0->:::0 state CLOSED
TCP: 45723 -> 1234
seq. 0x119d35d0 ack 0x00000000
flags 0x02 SYN, tcp header: 40 bytes
window 64240, checksum 0xd6be
00:03:26:875826: tcp4-listen
1234 -> 45723 (LISTEN)
Interface details
====================
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
VirtualFuncEthernet0/7/0 3 up 1500/0/0/0 rx
packets 3922
rx
bytes 239610
tx
packets 17
tx
bytes 6704
drops
3914
VirtualFuncEthernet0/7/0.1557 13 up 1500/0/0/0
VirtualFuncEthernet0/7/0.1556 14 up 1500/0/0/0 rx
packets 22
rx
bytes 5130
tx
packets 17
tx
bytes 6704
drops
14
ip4
19
VirtualFuncEthernet0/8/0 4 down 9000/0/0/0
gre1 2 up 9000/0/0/0
ipip0 1 up 9000/0/0/0 rx
packets 5
rx
bytes 500
ip4
5
local0 0 down 0/0/0/0
loop2 8 up 9000/0/0/0
loop3 9 up 9000/0/0/0
loop4 10 up 9000/0/0/0
loop5 11 up 9000/0/0/0
loop6 12 up 9000/0/0/0
memif0/0 5 up 0/65535/0/0 rx
packets 1036
rx
bytes 67766832
tx
packets 1049
tx
bytes 67822842
drops
2
ip4
1036
memif128/0 6 up 0/65535/0/0
memif192/0 7 up 0/65535/0/0
memif210/0 15 up 0/65535/0/0
memif210/1 16 up 0/65535/0/0
vpp#
vpp#
On Tue, Mar 15, 2022 at 2:32 PM Vijay Kumar via lists.fd.io <vjkumar2003=
[email protected]> wrote:
> Hi experts,
>
> I recently integrated vpp stack 21.06 and am running my NAS TCP protocol
> test cases. The pcap dispatch trace that I captured shows the TCP SYN
> packets are coming to tcp-input() and then to tcp-listen() but from here
> pkts are dropped instead of going to tcp-output() graph nodes for sending
> the SYN-ACK
>
> NOTE
> =========
> The session layer is enabled and the TCP listen IP/port is also showing in
> the session verbose command.
>
> The same test case used to work fine in the VPP 20.05. Am I missing
> anything?
> Let me know if there is anything I need to look at.
>
> vpp# show session verbose
> Connection State
> Rx-f Tx-f
> [0:0][T] 30.30.30.30:1234->0.0.0.0:0 LISTEN
> 0 0
> Thread 0: active sessions 1
> Thread 1: no sessions
>
>
>
>
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