* [dpdk-users] VRRP broadcast message is discarded X710 NIC
@ 2020-07-06 7:55 Dmitry B
0 siblings, 0 replies; only message in thread
From: Dmitry B @ 2020-07-06 7:55 UTC (permalink / raw)
To: users
Hi all,
I'm having a problem with the following 40G NIC adaptor when using DPDK 18:
*04:00.3 Ethernet controller: Intel Corporation Ethernet Controller X710
for 10GbE SFP+ (rev 02)*
The DPDK uses driver *net_i40e*.
Apparently NIC drops broadcast packet with source MAC it owns.
Here is a more detailed description of what is going on.
I have High-Availability environment with two routers.
Both routers registered by means of *rte_eth_dev_mac_addr_add*() Virtual
MAC (00:00:5e:00:01:64) in addition to a physical burned-in MAC.
When the primary router sending broadcast VRRP-advertise message with
source MAC set to Virtual MAC, the secondary route's adapter seems to drop
the packet.
This is how the message looks like:
> Ethernet II, Src: 00:00:5e:00:01:64, Dst: ff:ff:ff:ff:ff:ff
> Destination: ff:ff:ff:ff:ff:ff
> Address: ff:ff:ff:ff:ff:ff
> .... ..1. .... .... .... .... = LG bit: Locally administered
> address (this is NOT the factory default)
> .... ...1 .... .... .... .... = IG bit: Group address
> (multicast/broadcast)
> Source: 00:00:5e:00:01:64
> Address: 00:00:5e:00:01:64
> .... ..0. .... .... .... .... = LG bit: Globally unique address
> (factory default)
> .... ...0 .... .... .... .... = IG bit: Individual address
> (unicast)
> Type: IPv4 (0x0800)
> Internet Protocol Version 4, Src: 10.93.0.1, Dst: 255.255.255.255
> 0100 .... = Version: 4
> .... 0101 = Header Length: 20 bytes (5)
> Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
> 0000 00.. = Differentiated Services Codepoint: Default (0)
> .... ..00 = Explicit Congestion Notification: Not ECN-Capable
> Transport (0)
> Total Length: 32
> Identification: 0x0000 (0)
> Flags: 0x0000
> 0... .... .... .... = Reserved bit: Not set
> .0.. .... .... .... = Don't fragment: Not set
> ..0. .... .... .... = More fragments: Not set
> ...0 0000 0000 0000 = Fragment offset: 0
> Time to live: 255
> Protocol: VRRP (112)
> Header checksum: 0x0000 incorrect, should be 0xb110(may be caused by
> "IP checksum offload"?)
> Source: 10.93.0.1
> Destination: 255.255.255.255
> Virtual Router Redundancy Protocol
> Version 3, Packet type 1 (Advertisement)
> 0011 .... = VRRP protocol version: 3
> .... 0001 = VRRP packet type: Advertisement (1)
> Virtual Rtr ID: 100
> Priority: 254 (Non-default backup priority)
> Addr Count: 1
> 0000 .... = Reserved: 0
> .... 0000 0000 0001 = Adver Int: 1
> Checksum: 0xf896 [correct]
> [Checksum Status: Good]
> IP Address: 0.31.205.8
>
Same code, same DPDK version but with 1G NICs work perfectly.
What I'm missing?
Thanks
Dmitry
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