Re: [vpp-dev] Is there a plan to support the udp mode in vcl?

[Florin Coras]

Xyxue, 

It’s on our todo list. In the mean time, you can use the raw session layer 
apis. For examples see src/tests/vnet/session/udp_echo.c

Florin


> On May 21, 2018, at 11:08 PM, xyxue  wrote:
> 
> Hi Florin， Ed，
> 
> I'm testing the vcl in udp mode. After our debug  vpp can receive the udp 
> packets , but the packets will be dropped . Trace info is shown below:
> 
> Packet 1 
> 
> 01:46:56:707843: af-packet-input 
> af_packet: hw_if_index 1 next-index 4 
> tpacket2_hdr: 
> status 0x81 len 106 snaplen 106 mac 66 net 80 
> sec 0x5b03780d nsec 0x3498f0be vlan 0 vlan_tpid 0 
> 01:47:04:449319: ethernet-input 
> IP4: 02:fe:3f:8d:97:a4 -> 02:fe:6e:ca:46:82 
> 01:47:04:449340: ip4-input 
> UDP: 2.1.1.1 -> 2.1.1.2 
> tos 0x00, ttl 255, length 92, checksum 0x758c 
> fragment id 0x, flags DONT_FRAGMENT 
> UDP: 3536 -> 2111 
> length 72, checksum 0x8106 
> 01:47:04:449349: ip4-lookup 
> fib 0 dpo-idx 7 flow hash: 0x 
> UDP: 2.1.1.1 -> 2.1.1.2 
> tos 0x00, ttl 255, length 92, checksum 0x758c 
> fragment id 0x, flags DONT_FRAGMENT 
> UDP: 3536 -> 2111 
> length 72, checksum 0x8106 
> 01:47:04:449360: ip4-local 
> UDP: 2.1.1.1 -> 2.1.1.2 
> tos 0x00, ttl 255, length 92, checksum 0x758c 
> fragment id 0x, flags DONT_FRAGMENT 
> UDP: 3536 -> 2111 
> length 72, checksum 0x8106 
> 01:47:04:449367: ip4-udp-lookup 
> UDP: src-port 3536 dst-port 2111 
> 01:47:04:449379: udp4-input 
> UDP_INPUT: connection 0, disposition 4, thread 0 
> 01:47:04:449415: error-drop 
> udp4-input: UDP packets enqueued 
> 
> Is there a plan to support the udp mode in vcl?
> 
> Thanks,
> Xyxue
> 

[vpp-dev] Is there a plan to support the udp mode in vcl?

[xyxue]

Hi Florin， Ed，

I'm testing the vcl in udp mode. After our debug  vpp can receive the udp 
packets , but the packets will be dropped . Trace info is shown below:

Packet 1 

01:46:56:707843: af-packet-input 
af_packet: hw_if_index 1 next-index 4 
tpacket2_hdr: 
status 0x81 len 106 snaplen 106 mac 66 net 80 
sec 0x5b03780d nsec 0x3498f0be vlan 0 vlan_tpid 0 
01:47:04:449319: ethernet-input 
IP4: 02:fe:3f:8d:97:a4 -> 02:fe:6e:ca:46:82 
01:47:04:449340: ip4-input 
UDP: 2.1.1.1 -> 2.1.1.2 
tos 0x00, ttl 255, length 92, checksum 0x758c 
fragment id 0x, flags DONT_FRAGMENT 
UDP: 3536 -> 2111 
length 72, checksum 0x8106 
01:47:04:449349: ip4-lookup 
fib 0 dpo-idx 7 flow hash: 0x 
UDP: 2.1.1.1 -> 2.1.1.2 
tos 0x00, ttl 255, length 92, checksum 0x758c 
fragment id 0x, flags DONT_FRAGMENT 
UDP: 3536 -> 2111 
length 72, checksum 0x8106 
01:47:04:449360: ip4-local 
UDP: 2.1.1.1 -> 2.1.1.2 
tos 0x00, ttl 255, length 92, checksum 0x758c 
fragment id 0x, flags DONT_FRAGMENT 
UDP: 3536 -> 2111 
length 72, checksum 0x8106 
01:47:04:449367: ip4-udp-lookup 
UDP: src-port 3536 dst-port 2111 
01:47:04:449379: udp4-input 
UDP_INPUT: connection 0, disposition 4, thread 0 
01:47:04:449415: error-drop 
udp4-input: UDP packets enqueued 

Is there a plan to support the udp mode in vcl?

Thanks,
Xyxue