[Bug 1098] net/iavf: check_rx_vec_allow() result is ignored

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1098

            Bug ID: 1098
           Summary: net/iavf: check_rx_vec_allow() result is ignored
           Product: DPDK
           Version: 22.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev at dpdk.org
          Reporter: maxime.coquelin at redhat.com
  Target Milestone: ---

In IAVF driver, check_rx_vec_allow() ensure some conditions are met to
authorize vector path usage for a given Rxq.

Its return is assigned to Rxq's (struct iavf_adapter *)->rx_vec_allowed in
iavf_dev_rx_queue_setup(), but (struct iavf_adapter *)->rx_vec_allowed is never
used afterwards.

Either conditions checked in check_rx_vec_allow() are useless and so it should
be removed, or DP selection should take .rx_vec_allowed value into account.

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