[DPDK/ethdev Bug 1415] Calling rte_eth_bond_8023ad_dedicated_queues_enable() leads to exhaustion of the LACP packet pool

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1415

            Bug ID: 1415
           Summary: Calling rte_eth_bond_8023ad_dedicated_queues_enable()
                    leads to exhaustion of the LACP packet pool
           Product: DPDK
           Version: 23.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev at dpdk.org
          Reporter: michel at digirati.com.br
  Target Milestone: ---

When dedicated queues are enabled on a bond interface by calling
rte_eth_bond_8023ad_dedicated_queues_enable(), DPDK eventually starts
repeatedly loggin "tx_machine(580) - Failed to allocate LACP packet from pool".
According to the code of tx_machine(), this log entry means that the mbuf pool
created to send LACP packets (i.e. port->mbuf_pool) is exhausted.

The problem occurs about 10 minutes after my application (i.e.
https://github.com/AltraMayor/gatekeeper ) starts, and I can reproduce it with
one or two members in the bond interface. The problem does not occur if I
remove the call to rte_eth_bond_8023ad_dedicated_queues_enable().

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