Hi Raj, Good to see progress. Check with “show int” the tx counters on the sender and rx counters on the receiver as the interfaces might be dropping traffic. One sender should be able to do more than 5Gbps.
How big are the writes to the tx fifo? Make sure the tx buffer is some tens of kB. As for the issue with the number of workers, you’ll have to switch to udpc (connected udp), to ensure you have a separate connection for each ‘flow’, and to use accept in combination with epoll to accept the sessions udpc creates. Note that udpc currently does not work correctly with vcl and multiple vpp workers if vcl is the sender (not the receiver) and traffic is bidirectional. The sessions are all created on the first thread and once return traffic is received, they’re migrated to the thread selected by RSS hashing. VCL is not notified when that happens and it runs out of sync. You might not be affected by this, as you’re not receiving any return traffic, but because of that all sessions may end up stuck on the first thread. For udp transport, the listener is connection-less and bound to the main thread. As a result, all incoming packets, even if they pertain to multiple flows, are written to the listener’s buffer/fifo. Regards, Florin > On Jan 20, 2020, at 3:50 PM, Raj Kumar <raj.gauta...@gmail.com> wrote: > > Hi Florin, > I changed my application as you suggested. Now, I am able to achieve 5 Gbps > with a single UDP stream. Overall, I can get ~20Gbps with multiple host > application . Also, the TCP throughput is improved to ~28Gbps after tuning > as mentioned in [1]. > On the similar topic; the UDP tx throughput is throttled to 5Gbps. Even if I > run the multiple host applications the overall throughput is 5Gbps. I also > tried by configuring multiple worker threads . But the problem is that all > the application sessions are assigned to the same worker thread. Is there any > way to assign each session to a different worker thread? > > vpp# sh session verbose 2 > Thread 0: no sessions > [#1][U] fd0d:edc4:ffff:2001::203:58926->fd0d:edc4: > Rx fifo: cursize 0 nitems 3999999 has_event 0 > head 0 tail 0 segment manager 1 > vpp session 0 thread 1 app session 0 thread 0 > ooo pool 0 active elts newest 0 > Tx fifo: cursize 3999999 nitems 3999999 has_event 1 > head 1460553 tail 1460552 segment manager 1 > vpp session 0 thread 1 app session 0 thread 0 > ooo pool 0 active elts newest 4294967295 > session: state: opened opaque: 0x0 flags: > [#1][U] fd0d:edc4:ffff:2001::203:63413->fd0d:edc4: > Rx fifo: cursize 0 nitems 3999999 has_event 0 > head 0 tail 0 segment manager 2 > vpp session 1 thread 1 app session 0 thread 0 > ooo pool 0 active elts newest 0 > Tx fifo: cursize 3999999 nitems 3999999 has_event 1 > head 3965434 tail 3965433 segment manager 2 > vpp session 1 thread 1 app session 0 thread 0 > ooo pool 0 active elts newest 4294967295 > session: state: opened opaque: 0x0 flags: > Thread 1: active sessions 2 > Thread 2: no sessions > Thread 3: no sessions > Thread 4: no sessions > Thread 5: no sessions > Thread 6: no sessions > Thread 7: no sessions > vpp# sh app client > Connection App > [#1][U] fd0d:edc4:ffff:2001::203:58926->udp6_tx_8092[shm] > [#1][U] fd0d:edc4:ffff:2001::203:63413->udp6_tx_8093[shm] > vpp# > > > > thanks, > -Raj > > On Sun, Jan 19, 2020 at 8:50 PM Florin Coras <fcoras.li...@gmail.com > <mailto:fcoras.li...@gmail.com>> wrote: > Hi Raj, > > The function used for receiving datagrams is limited to reading at most the > length of a datagram from the rx fifo. UDP datagrams are mtu sized, so your > reads are probably limited to ~1.5kB. On each epoll rx event try reading from > the session handle in a while loop until you get an VPPCOM_EWOULDBLOCK. That > might improve performance. > > Having said that, udp is lossy so unless you implement your own > congestion/flow control algorithms, the data you’ll receive might be full of > “holes”. What are the rx/tx error counters on your interfaces (check with “sh > int”). > > Also, with simple tuning like this [1], you should be able to achieve much > more than 15Gbps with tcp. > > Regards, > Florin > > [1] https://wiki.fd.io/view/VPP/HostStack/LDP/iperf > <https://wiki.fd.io/view/VPP/HostStack/LDP/iperf> > >> On Jan 19, 2020, at 3:25 PM, Raj Kumar <raj.gauta...@gmail.com >> <mailto:raj.gauta...@gmail.com>> wrote: >> >> Hi Florin, >> By using VCL library in an UDP receiver application, I am able to receive >> only 2 Mbps traffic. On increasing the traffic, I see Rx FIFO full error and >> application stopped receiving the traffic from the session layer. Whereas, >> with TCP I can easily achieve 15Gbps throughput without tuning any DPDK >> parameter. UDP tx also looks fine. From an host application I can send >> ~5Gbps without any issue. >> >> I am running VPP( stable/2001 code) on RHEL8 server using Mellanox 100G >> (MLNX5) adapters. >> Please advise if I can use VCL library to receive high throughput UDP >> traffic ( in Gbps). I would be running multiple instances of host >> application to receive data ( ~50-60 Gbps). >> >> I also tried by increasing the Rx FIFO size to 16MB but did not help much. >> The host application is just throwing the received packets , it is not doing >> any packet processing. >> >> [root@orc01 vcl_test]# VCL_DEBUG=2 ./udp6_server_vcl >> VCL<20201>: configured VCL debug level (2) from VCL_DEBUG! >> VCL<20201>: allocated VCL heap = 0x7f39a17ab010, size 268435456 (0x10000000) >> VCL<20201>: configured rx_fifo_size 4000000 (0x3d0900) >> VCL<20201>: configured tx_fifo_size 4000000 (0x3d0900) >> VCL<20201>: configured app_scope_local (1) >> VCL<20201>: configured app_scope_global (1) >> VCL<20201>: configured api-socket-name (/tmp/vpp-api.sock) >> VCL<20201>: completed parsing vppcom config! >> vppcom_connect_to_vpp:480: vcl<20201:0>: app (udp6_server) is connected to >> VPP! >> vppcom_app_create:1104: vcl<20201:0>: sending session enable >> vppcom_app_create:1112: vcl<20201:0>: sending app attach >> vppcom_app_create:1121: vcl<20201:0>: app_name 'udp6_server', >> my_client_index 256 (0x100) >> vppcom_epoll_create:2439: vcl<20201:0>: Created vep_idx 0 >> vppcom_session_create:1179: vcl<20201:0>: created session 1 >> vppcom_session_bind:1317: vcl<20201:0>: session 1 handle 1: binding to local >> IPv6 address fd0d:edc4:ffff:2001::203 port 8092, proto UDP >> vppcom_session_listen:1349: vcl<20201:0>: session 1: sending vpp listen >> request... >> vcl_session_bound_handler:604: vcl<20201:0>: session 1 [0x1]: listen >> succeeded! >> vppcom_epoll_ctl:2541: vcl<20201:0>: EPOLL_CTL_ADD: vep_sh 0, sh 1, events >> 0x1, data 0x1! >> vppcom_session_create:1179: vcl<20201:0>: created session 2 >> vppcom_session_bind:1317: vcl<20201:0>: session 2 handle 2: binding to local >> IPv6 address fd0d:edc4:ffff:2001::203 port 8093, proto UDP >> vppcom_session_listen:1349: vcl<20201:0>: session 2: sending vpp listen >> request... >> vcl_session_app_add_segment_handler:765: vcl<20201:0>: mapped new segment >> '20190-2' size 134217728 >> vcl_session_bound_handler:604: vcl<20201:0>: session 2 [0x2]: listen >> succeeded! >> vppcom_epoll_ctl:2541: vcl<20201:0>: EPOLL_CTL_ADD: vep_sh 0, sh 2, events >> 0x1, data 0x2! >> >> >> vpp# sh session verbose 2 >> [#0][U] fd0d:edc4:ffff:2001::203:8092->:::0 >> >> Rx fifo: cursize 3999125 nitems 3999999 has_event 1 >> head 2554045 tail 2553170 segment manager 1 >> vpp session 0 thread 0 app session 1 thread 0 >> ooo pool 0 active elts newest 4294967295 >> Tx fifo: cursize 0 nitems 3999999 has_event 0 >> head 0 tail 0 segment manager 1 >> vpp session 0 thread 0 app session 1 thread 0 >> ooo pool 0 active elts newest 0 >> [#0][U] fd0d:edc4:ffff:2001::203:8093->:::0 >> >> Rx fifo: cursize 0 nitems 3999999 has_event 0 >> head 0 tail 0 segment manager 2 >> vpp session 1 thread 0 app session 2 thread 0 >> ooo pool 0 active elts newest 0 >> Tx fifo: cursize 0 nitems 3999999 has_event 0 >> head 0 tail 0 segment manager 2 >> vpp session 1 thread 0 app session 2 thread 0 >> ooo pool 0 active elts newest 0 >> Thread 0: active sessions 2 >> >> [root@orc01 vcl_test]# cat /etc/vpp/vcl.conf >> vcl { >> rx-fifo-size 4000000 >> tx-fifo-size 4000000 >> app-scope-local >> app-scope-global >> api-socket-name /tmp/vpp-api.sock >> } >> [root@orc01 vcl_test]# >> >> ------------------- Start of thread 0 vpp_main ------------------- >> Packet 1 >> >> 00:09:53:445025: dpdk-input >> HundredGigabitEthernet12/0/0 rx queue 0 >> buffer 0x88078: current data 0, length 1516, buffer-pool 0, ref-count 1, >> totlen-nifb 0, trace handle 0x0 >> ext-hdr-valid >> l4-cksum-computed l4-cksum-correct >> PKT MBUF: port 0, nb_segs 1, pkt_len 1516 >> buf_len 2176, data_len 1516, ol_flags 0x180, data_off 128, phys_addr >> 0x75601e80 >> packet_type 0x2e1 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0 >> rss 0x0 fdir.hi 0x0 fdir.lo 0x0 >> Packet Offload Flags >> 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_IPV6_EXT_UNKNOWN (0x00e0) IPv6 packet with or without >> extension headers >> RTE_PTYPE_L4_UDP (0x0200) UDP packet >> IP6: b8:83:03:79:9f:e4 -> b8:83:03:79:af:8c 802.1q vlan 2001 >> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >> UDP: 56944 -> 8092 >> length 1458, checksum 0xb22d >> 00:09:53:445028: ethernet-input >> frame: flags 0x3, hw-if-index 2, sw-if-index 2 >> IP6: b8:83:03:79:9f:e4 -> b8:83:03:79:af:8c 802.1q vlan 2001 >> 00:09:53:445029: ip6-input >> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >> UDP: 56944 -> 8092 >> length 1458, checksum 0xb22d >> 00:09:53:445031: ip6-lookup >> fib 0 dpo-idx 6 flow hash: 0x00000000 >> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >> UDP: 56944 -> 8092 >> length 1458, checksum 0xb22d >> 00:09:53:445032: ip6-local >> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >> UDP: 56944 -> 8092 >> length 1458, checksum 0xb22d >> 00:09:53:445032: ip6-udp-lookup >> UDP: src-port 56944 dst-port 8092 >> 00:09:53:445033: udp6-input >> UDP_INPUT: connection 0, disposition 5, thread 0 >> >> >> thanks, >> -Raj >> >> >> On Wed, Jan 15, 2020 at 4:09 PM Raj Kumar via Lists.Fd.Io >> <http://lists.fd.io/> <raj.gautam25=gmail....@lists.fd.io >> <mailto:gmail....@lists.fd.io>> wrote: >> Hi Florin, >> Yes, [2] patch resolved the IPv6/UDP receiver issue. >> Thanks! for your help. >> >> thanks, >> -Raj >> >> On Tue, Jan 14, 2020 at 9:35 PM Florin Coras <fcoras.li...@gmail.com >> <mailto:fcoras.li...@gmail.com>> wrote: >> Hi Raj, >> >> First of all, with this [1], the vcl test app/client can establish a udpc >> connection. Note that udp will most probably lose packets, so large >> exchanges with those apps may not work. >> >> As for the second issue, does [2] solve it? >> >> Regards, >> Florin >> >> [1] https://gerrit.fd.io/r/c/vpp/+/24332 >> <https://gerrit.fd.io/r/c/vpp/+/24332> >> [2] https://gerrit.fd.io/r/c/vpp/+/24334 >> <https://gerrit.fd.io/r/c/vpp/+/24334> >> >>> On Jan 14, 2020, at 12:59 PM, Raj Kumar <raj.gauta...@gmail.com >>> <mailto:raj.gauta...@gmail.com>> wrote: >>> >>> Hi Florin, >>> Thanks! for the reply. >>> >>> I realized the issue with the non-connected case. For receiving datagrams, >>> I was using recvfrom() with DONOT_WAIT flag because of that >>> vppcom_session_recvfrom() api was failing. It expects either 0 or MSG_PEEK >>> flag. >>> if (flags == 0) >>> rv = vppcom_session_read (session_handle, buffer, buflen); >>> else if (flags & MSG_PEEK) 0x2 >>> rv = vppcom_session_peek (session_handle, buffer, buflen); >>> else >>> { >>> VDBG (0, "Unsupport flags for recvfrom %d", flags); >>> return VPPCOM_EAFNOSUPPORT; >>> } >>> >>> I changed the flag to 0 in recvfrom() , after that UDP rx is working fine >>> but only for IPv4. >>> >>> I am facing a different issue with IPv6/UDP receiver. I am getting "no >>> listener for dst port" error. >>> >>> Please let me know if I am doing something wrong. >>> Here are the traces : - >>> >>> [root@orc01 testcode]# VCL_DEBUG=2 LDP_DEBUG=2 >>> LD_PRELOAD=/opt/vpp/build-root/install-vpp-native/vpp/lib/libvcl_ldpreload.so >>> VCL_CONFIG=/etc/vpp/vcl.cfg ./udp6_rx >>> VCL<1164>: configured VCL debug level (2) from VCL_DEBUG! >>> VCL<1164>: allocated VCL heap = 0x7ff877439010, size 268435456 (0x10000000) >>> VCL<1164>: configured rx_fifo_size 4000000 (0x3d0900) >>> VCL<1164>: configured tx_fifo_size 4000000 (0x3d0900) >>> VCL<1164>: configured app_scope_local (1) >>> VCL<1164>: configured app_scope_global (1) >>> VCL<1164>: configured api-socket-name (/tmp/vpp-api.sock) >>> VCL<1164>: completed parsing vppcom config! >>> vppcom_connect_to_vpp:549: vcl<1164:0>: app (ldp-1164-app) is connected to >>> VPP! >>> vppcom_app_create:1067: vcl<1164:0>: sending session enable >>> vppcom_app_create:1075: vcl<1164:0>: sending app attach >>> vppcom_app_create:1084: vcl<1164:0>: app_name 'ldp-1164-app', >>> my_client_index 0 (0x0) >>> ldp_init:209: ldp<1164>: configured LDP debug level (2) from env var >>> LDP_DEBUG! >>> ldp_init:282: ldp<1164>: LDP initialization: done! >>> ldp_constructor:2490: LDP<1164>: LDP constructor: done! >>> socket:974: ldp<1164>: calling vls_create: proto 1 (UDP), is_nonblocking 0 >>> vppcom_session_create:1142: vcl<1164:0>: created session 0 >>> bind:1086: ldp<1164>: fd 32: calling vls_bind: vlsh 0, addr 0x7fff9a93efe0, >>> len 28 >>> vppcom_session_bind:1280: vcl<1164:0>: session 0 handle 0: binding to local >>> IPv6 address :: port 8092, proto UDP >>> vppcom_session_listen:1312: vcl<1164:0>: session 0: sending vpp listen >>> request... >>> vcl_session_bound_handler:610: vcl<1164:0>: session 0 [0x1]: listen >>> succeeded! >>> bind:1102: ldp<1164>: fd 32: returning 0 >>> >>> vpp# sh app server >>> Connection App Wrk >>> [0:0][CT:U] :::8092->:::0 ldp-1164-app[shm] 0 >>> [#0][U] :::8092->:::0 ldp-1164-app[shm] 0 >>> >>> vpp# sh err >>> Count Node Reason >>> 7 dpdk-input no error >>> 2606 ip6-udp-lookup no listener for dst port >>> 8 arp-reply ARP replies sent >>> 1 arp-disabled ARP Disabled on this >>> interface >>> 13 ip6-glean neighbor solicitations >>> sent >>> 2606 ip6-input valid ip6 packets >>> 4 ip6-local-hop-by-hop Unknown protocol ip6 >>> local h-b-h packets dropped >>> 2606 ip6-icmp-error destination unreachable >>> response sent >>> 40 ip6-icmp-input valid packets >>> 1 ip6-icmp-input neighbor solicitations >>> from source not on link >>> 12 ip6-icmp-input neighbor solicitations >>> for unknown targets >>> 1 ip6-icmp-input neighbor advertisements >>> sent >>> 1 ip6-icmp-input neighbor advertisements >>> received >>> 40 ip6-icmp-input router advertisements sent >>> 40 ip6-icmp-input router advertisements >>> received >>> 1 ip4-icmp-input echo replies sent >>> 89 lldp-input lldp packets received on >>> disabled interfaces >>> 1328 llc-input unknown llc ssap/dsap >>> vpp# >>> >>> vpp# show trace >>> ------------------- Start of thread 0 vpp_main ------------------- >>> Packet 1 >>> >>> 00:23:39:401354: dpdk-input >>> HundredGigabitEthernet12/0/0 rx queue 0 >>> buffer 0x8894e: current data 0, length 1516, buffer-pool 0, ref-count 1, >>> totlen-nifb 0, trace handle 0x0 >>> ext-hdr-valid >>> l4-cksum-computed l4-cksum-correct >>> PKT MBUF: port 0, nb_segs 1, pkt_len 1516 >>> buf_len 2176, data_len 1516, ol_flags 0x180, data_off 128, phys_addr >>> 0x75025400 >>> packet_type 0x2e1 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0 >>> rss 0x0 fdir.hi 0x0 fdir.lo 0x0 >>> Packet Offload Flags >>> 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_IPV6_EXT_UNKNOWN (0x00e0) IPv6 packet with or without >>> extension headers >>> RTE_PTYPE_L4_UDP (0x0200) UDP packet >>> IP6: b8:83:03:79:9f:e4 -> b8:83:03:79:af:8c 802.1q vlan 2001 >>> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >>> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >>> UDP: 60593 -> 8092 >>> length 1458, checksum 0x0964 >>> 00:23:39:401355: ethernet-input >>> frame: flags 0x3, hw-if-index 2, sw-if-index 2 >>> IP6: b8:83:03:79:9f:e4 -> b8:83:03:79:af:8c 802.1q vlan 2001 >>> 00:23:39:401356: ip6-input >>> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >>> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >>> UDP: 60593 -> 8092 >>> length 1458, checksum 0x0964 >>> 00:23:39:401357: ip6-lookup >>> fib 0 dpo-idx 5 flow hash: 0x00000000 >>> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >>> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >>> UDP: 60593 -> 8092 >>> length 1458, checksum 0x0964 >>> 00:23:39:401361: ip6-local >>> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >>> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >>> UDP: 60593 -> 8092 >>> length 1458, checksum 0x0964 >>> 00:23:39:401362: ip6-udp-lookup >>> UDP: src-port 60593 dst-port 8092 (no listener) >>> 00:23:39:401362: ip6-icmp-error >>> UDP: fd0d:edc4:ffff:2001::201 -> fd0d:edc4:ffff:2001::203 >>> tos 0x00, flow label 0x0, hop limit 64, payload length 1458 >>> UDP: 60593 -> 8092 >>> length 1458, checksum 0x0964 >>> 00:23:39:401363: error-drop >>> rx:HundredGigabitEthernet12/0/0.2001 >>> 00:23:39:401364: drop >>> ip6-input: valid ip6 packets >>> >>> vpp# >>> >>> >>> Thanks, >>> -Raj >>> >>> >>> On Tue, Jan 14, 2020 at 1:44 PM Florin Coras <fcoras.li...@gmail.com >>> <mailto:fcoras.li...@gmail.com>> wrote: >>> Hi Raj, >>> >>> Session layer does support connection-less transports but udp does not >>> raise accept notifications to vcl. UDPC might, but we haven’t tested udpc >>> with vcl in a long time so it might not work properly. >>> >>> What was the problem you were hitting in the non-connected case? >>> >>> Regards, >>> Florin >>> >>> > On Jan 14, 2020, at 7:13 AM, raj.gauta...@gmail.com >>> > <mailto:raj.gauta...@gmail.com> wrote: >>> > >>> > Hi , >>> > I am trying some host application tests ( using LD_PRELOAD) . TCP rx and >>> > tx both work fine. UDP tx also works fine. >>> > The issue is only with UDP rx . In some discussion it was mentioned that >>> > session layer does not support connection-less transports so protocols >>> > like udp still need to accept connections and only afterwards read from >>> > the fifos. >>> > So, I changed the UDP receiver application to use listen() and accept() >>> > before read() . But , I am still having issue to make it run. >>> > After I started, udp traffic from other server it seems to accept the >>> > connection but never returns from the vppcom_session_accept() function. >>> > VPP release is 19.08. >>> > >>> > vpp# sh app server >>> > Connection App Wrk >>> > [0:0][CT:U] 0.0.0.0:8090->0.0.0.0:0 <http://0.0.0.0:0/> >>> > ldp-36646-app[shm] 0 >>> > [#0][U] 0.0.0.0:8090->0.0.0.0:0 <http://0.0.0.0:0/> >>> > ldp-36646-app[shm] 0 >>> > vpp# >>> > >>> > >>> > [root@orc01 testcode]# VCL_DEBUG=2 LDP_DEBUG=2 >>> > LD_PRELOAD=/opt/vpp/build-root/install-vpp-native/vpp/lib/libvcl_ldpreload.so >>> > VCL_CONFIG=/etc/vpp/vcl.cfg ./udp_rx >>> > VCL<36646>: configured VCL debug level (2) from VCL_DEBUG! >>> > VCL<36646>: allocated VCL heap = 0x7f77e5309010, size 268435456 >>> > (0x10000000) >>> > VCL<36646>: configured rx_fifo_size 4000000 (0x3d0900) >>> > VCL<36646>: configured tx_fifo_size 4000000 (0x3d0900) >>> > VCL<36646>: configured app_scope_local (1) >>> > VCL<36646>: configured app_scope_global (1) >>> > VCL<36646>: configured api-socket-name (/tmp/vpp-api.sock) >>> > VCL<36646>: completed parsing vppcom config! >>> > vppcom_connect_to_vpp:549: vcl<36646:0>: app (ldp-36646-app) is connected >>> > to VPP! >>> > vppcom_app_create:1067: vcl<36646:0>: sending session enable >>> > vppcom_app_create:1075: vcl<36646:0>: sending app attach >>> > vppcom_app_create:1084: vcl<36646:0>: app_name 'ldp-36646-app', >>> > my_client_index 0 (0x0) >>> > ldp_init:209: ldp<36646>: configured LDP debug level (2) from env var >>> > LDP_DEBUG! >>> > ldp_init:282: ldp<36646>: LDP initialization: done! >>> > ldp_constructor:2490: LDP<36646>: LDP constructor: done! >>> > socket:974: ldp<36646>: calling vls_create: proto 1 (UDP), is_nonblocking >>> > 0 >>> > vppcom_session_create:1142: vcl<36646:0>: created session 0 >>> > Socket successfully created.. >>> > bind:1086: ldp<36646>: fd 32: calling vls_bind: vlsh 0, addr >>> > 0x7fff3f3c1040, len 16 >>> > vppcom_session_bind:1280: vcl<36646:0>: session 0 handle 0: binding to >>> > local IPv4 address 0.0.0.0 port 8090, proto UDP >>> > vppcom_session_listen:1312: vcl<36646:0>: session 0: sending vpp listen >>> > request... >>> > vcl_session_bound_handler:610: vcl<36646:0>: session 0 [0x1]: listen >>> > succeeded! >>> > bind:1102: ldp<36646>: fd 32: returning 0 >>> > Socket successfully binded.. >>> > listen:2005: ldp<36646>: fd 32: calling vls_listen: vlsh 0, n 5 >>> > vppcom_session_listen:1308: vcl<36646:0>: session 0 [0x1]: already in >>> > listen state! >>> > listen:2020: ldp<36646>: fd 32: returning 0 >>> > Server listening.. >>> > ldp_accept4:2043: ldp<36646>: listen fd 32: calling >>> > vppcom_session_accept: listen sid 0, ep 0x0, flags 0x3f3c0fc0 >>> > vppcom_session_accept:1478: vcl<36646:0>: discarded event: 0 >>> > >>> > >>> >> >> >
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