[dpdk-dev] [Bug 550] Only one bond link is usable with 802.3ad LACP (mode 4)

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=550

            Bug ID: 550
           Summary: Only one bond link is usable with 802.3ad LACP (mode
                    4)
           Product: DPDK
           Version: 20.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: ethdev
          Assignee: dev at dpdk.org
          Reporter: kiran.kn80 at gmail.com
  Target Milestone: ---

This commit is causing only one bond slave link to forward traffic -
https://github.com/DPDK/dpdk/commit/56cbc08173995d6d57bd5927dfe9b11ad269bf8d

Testing with Juniper QFX switch.

Only one link satisfies this condition -

                if (is_same_ether_addr(&partner->port_params.system,
                        &internals->mode4.mac_addr)) {
                        /* This LACP frame is sending to the bonding port
                         * so pass it to rx_machine.
                         */
                        rx_machine(internals, slave_id, &lacp->lacpdu);
                }

For other links, the system id is different than the bond MAC and so
rx_machine() never gets called.

Discussed this with Doherty, Declan <declan.doherty at intel.com>

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