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For RSS flow actions, e1000_ethdev.h uses IGB_MAX_RX_QUEUE_NUM instead of IGB_MAX_RX_QUEUE_NUM_82576

Bug 83 [email protected] 1 participant 2 messages Aug 15, 2018 – Dec 22, 2020

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https://bugs.dpdk.org/show_bug.cgi?id=83

Bug ID: 83
Summary: For RSS flow actions, e1000_ethdev.h uses
IGB_MAX_RX_QUEUE_NUM instead of IGB_MAX_RX_QUEUE_NUM_82576
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: CONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---

NOTE: This report needs to be confirmed by someone who is familiar with this code.

When using the rss_flow_action, the queue_num needs to be specified. The only indication of what the maximum value for this is from rte_eth_dev_info.max_rx_queues. This seems to work for all PMDs that support this flow action *except* for the 82576 variant of e1000.

This is because at line 239, the 'queue' parameter of struct igb_rte_flow_rss_conf is defined as IGB_MAX_RX_QUEUE_NUM, yet this device reports its maximum queue size as being the same as IGB_MAX_RX_QUEUE_NUM_82576 in rte_eth_dev_info.max_rx_queues - although it doesn't reference the same constant.

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