Public bug reported:

Hi,

Per the Intel community [1], for Intel X710 controllers, the NIC is
meant to handle LLDP directly. Unfortunately, this doesn't play well
with lldpd:

| hloeung@cumulus:mgmt:~$ net show lldp | grep swp24
| swp24      10G    Trunk/L2    37383638-3530-5A43-3238-333330423954  Unknown

It is known in upstream lldpd[2] with a fix proposed to work around this
by disabling handling of LLDP in the NIC[3]. Can we please backport this
to Focal?

The suggested workaround is:

| for i in $(sudo ls /sys/kernel/debug/i40e); do
|   echo lldp stop | sudo tee /sys/kernel/debug/i40e/${i}/command
| done

[1]https://community.intel.com/t5/Ethernet-Products/X710-dropping-LLDP-frames/m-p/348508
[2]https://github.com/lldpd/lldpd/issues/372
[3]https://github.com/lldpd/lldpd/commit/a74fd8ca9c02fc0eb81f7a219b2bb657cac25ca2

** Affects: lldpd (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: lldpd (Ubuntu Focal)
     Importance: Undecided
         Status: New

** Affects: lldpd (Ubuntu Hirsute)
     Importance: Undecided
         Status: New

** Affects: lldpd (Ubuntu Impish)
     Importance: Undecided
         Status: Fix Released

** Affects: lldpd (Ubuntu Jammy)
     Importance: Undecided
         Status: Fix Released

** Also affects: lldpd (Ubuntu Impish)
   Importance: Undecided
       Status: New

** Also affects: lldpd (Ubuntu Hirsute)
   Importance: Undecided
       Status: New

** Also affects: lldpd (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Also affects: lldpd (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Changed in: lldpd (Ubuntu Impish)
       Status: New => Invalid

** Changed in: lldpd (Ubuntu Jammy)
       Status: New => Invalid

** Changed in: lldpd (Ubuntu Impish)
       Status: Invalid => Fix Released

** Changed in: lldpd (Ubuntu Jammy)
       Status: Invalid => Fix Released

** Description changed:

  Hi,
  
  Per the Intel community [1], for Intel X710 controllers, the NIC is
  meant to handle LLDP directly. Unfortunately, this doesn't play well
  with lldpd:
  
  | hloeung@cumulus:mgmt:~$ net show lldp | grep swp24
  | swp24      10G    Trunk/L2    37383638-3530-5A43-3238-333330423954  Unknown
  
- It is known in upstream lldpd with a fix proposed to work around this by
- disabling handling of LLDP in the NIC[2]. Can we please backport this to
- Focal?
+ It is known in upstream lldpd[2] with a fix proposed to work around this
+ by disabling handling of LLDP in the NIC[3]. Can we please backport this
+ to Focal?
  
  The suggested workaround is:
  
  | for i in $(sudo ls /sys/kernel/debug/i40e); do
  |   echo lldp stop | sudo tee /sys/kernel/debug/i40e/${i}/command
  | done
  
- 
  
[1]https://community.intel.com/t5/Ethernet-Products/X710-dropping-LLDP-frames/m-p/348508
- 
[2]https://github.com/lldpd/lldpd/commit/a74fd8ca9c02fc0eb81f7a219b2bb657cac25ca2
+ [2]https://github.com/lldpd/lldpd/issues/372
+ 
[3]https://github.com/lldpd/lldpd/commit/a74fd8ca9c02fc0eb81f7a219b2bb657cac25ca2

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https://bugs.launchpad.net/bugs/1954721

Title:
  no LLDP on Intel X710 NICs

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