[dpdk-dev] [PATCH] app/testpmd: fix testpmd failure due to RSS offload check
Ferruh Yigit
ferruh.yigit at intel.com
Tue Apr 24 18:13:46 CEST 2018
On 4/24/2018 3:39 PM, Ferruh Yigit wrote:
> On 4/24/2018 3:18 PM, Qi Zhang wrote:
>> After add RSS hash offload check, default rss_hf will fail on
>> devices that not support all bits, the patch take rss_hf as
>> a suggest value and only set bits that device supported base on
>> rte_eth_dev_get_info.
>>
>> Fixes: 527624c663f8 ("ethdev: add supported hash function check")
>> Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
>> ---
>> app/test-pmd/testpmd.c | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
>> index d6da41927..af3fc5388 100644
>> --- a/app/test-pmd/testpmd.c
>> +++ b/app/test-pmd/testpmd.c
>> @@ -2265,13 +2265,16 @@ init_port_config(void)
>> {
>> portid_t pid;
>> struct rte_port *port;
>> + struct rte_eth_dev_info dev_info;
>>
>> RTE_ETH_FOREACH_DEV(pid) {
>> port = &ports[pid];
>> port->dev_conf.fdir_conf = fdir_conf;
>> if (nb_rxq > 1) {
>> + rte_eth_dev_info_get(pid, &dev_info);
>> port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
>> - port->dev_conf.rx_adv_conf.rss_conf.rss_hf = rss_hf;
>> + port->dev_conf.rx_adv_conf.rss_conf.rss_hf =
>> + rss_hf & dev_info.flow_type_rss_offloads;
>
> "rss_hf" is a global variable, not per port. Adrien's patch [1] made that it has
> been updated by "port config all rss ..." command, so that value can change.
>
> Also Xueming's patch did it will set "0" if "default" parameter used [2], like
> "port config all rss default"
>
> So not sure if rss_hf is reliable at this point.
>
> What do you think using dev_info.flow_type_rss_offloads directly?
Prevent updating rss_hf in "port config all rss default" and this patch together
lgtm.
>
>
> [1] 75d5493eb302 ("app/testpmd: fix RSS flow action configuration")
>
> [2] 8c1f4aff92a6 ("app/testpmd: new parameter for port config all RSS command")
>
>> } else {
>> port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
>> port->dev_conf.rx_adv_conf.rss_conf.rss_hf = 0;
>>
>
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