For the current hns3 PMD driver, there are some RSS related bugs at
the following scenes:
1. Start the application with the number of Rx queues equals 1(--rxq=1),
modify the number of Rx queue to some number greater than 1 during
normal operation. As a result, upper application can't receive packets
from multiple rx queues.
2. Start testpmd application with the option disable-rss and the number
of Rx queue is greater than 1(--disable-rss --rxq=N, N>1). As a result,
upper application still can receive packets from multiple rx queues.
The root cause as below:
There are some error configuration in the RSS indirection table of hns3
network engine.
This patch fixes them with the following modification.
1. When RSS size is changed, we need to update RSS redirection table
maintained by driver and configure them to hardware. Besides, during
the entire reset process, we need to ensure that the RSS table
information are not overwritten and configured directly to the hardware
in the RESET_STAGE_RESTORE stage of the reset process.
2. When sarting testpmd application with the options disable-rss, it
doesn't need to configure RSS redirection table to hardware.
Fixes: c37ca66f2b27 ("net/hns3: support RSS")
Cc: stable@dpdk.org
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
920be799db