netdev - Re: [PATCH bpf-next v4] selftests: xsk: Update poll test cases

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Date:   Wed, 10 Aug 2022 17:17:36 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
        Shibin Koikkara Reeny <shibin.koikkara.reeny@...el.com>
Cc:     bpf@...r.kernel.org, ast@...nel.org, netdev@...r.kernel.org,
        magnus.karlsson@...el.com, bjorn@...nel.org, kuba@...nel.org,
        andrii@...nel.org, ciara.loftus@...el.com
Subject: Re: [PATCH bpf-next v4] selftests: xsk: Update poll test cases

On 8/10/22 3:08 PM, Maciej Fijalkowski wrote:
> On Wed, Aug 03, 2022 at 02:43:54PM +0000, Shibin Koikkara Reeny wrote:
>> Poll test case was not testing all the functionality
>> of the poll feature in the testsuite. This patch
>> update the poll test case which contain 2 testcases to
> 
> updates, contains, test cases
> 
>> test the RX and the TX poll functionality and additional
>> 2 more testcases to check the timeout features of the
> 
> feature
> 
>> poll event.
>>
>> Poll testsuite have 4 test cases:
> 
> test suite, has
> 
>>
>> 1. TEST_TYPE_RX_POLL:
>> Check if RX path POLLIN function work as expect. TX path
> 
> works
> 
>> can use any method to sent the traffic.
> 
> send
> 
>>
>> 2. TEST_TYPE_TX_POLL:
>> Check if TX path POLLOUT function work as expect. RX path
>> can use any method to receive the traffic.
>>
>> 3. TEST_TYPE_POLL_RXQ_EMPTY:
>> Call poll function with parameter POLLIN on empty rx queue
>> will cause timeout.If return timeout then test case is pass.
> 
> space after dot
> 
>>
>> 4. TEST_TYPE_POLL_TXQ_FULL:
>> When txq is filled and packets are not cleaned by the kernel
>> then if we invoke the poll function with POLLOUT then it
>> should trigger timeout.
>>
>> v1: https://lore.kernel.org/bpf/20220718095712.588513-1-shibin.koikkara.reeny@intel.com/
>> v2: https://lore.kernel.org/bpf/20220726101723.250746-1-shibin.koikkara.reeny@intel.com/
>> v3: https://lore.kernel.org/bpf/20220729132337.211443-1-shibin.koikkara.reeny@intel.com/
>>
>> Changes in v2:
>>   * Updated the commit message
>>   * fixed the while loop flow in receive_pkts function.
>> Changes in v3:
>>   * Introduced single thread validation function.
>>   * Removed pkt_stream_invalid().
>>   * Updated TEST_TYPE_POLL_TXQ_FULL testcase to create invalid frame.
>>   * Removed timer from send_pkts().
>>   * Removed boolean variable skip_rx and skip_tx.
>> Change in v4:
>>   * Added is_umem_valid()
> 
> for single patches, I believe that it's concerned a better practice to
> include the versioning below the '---' line?
> 
>>
>> Signed-off-by: Shibin Koikkara Reeny <shibin.koikkara.reeny@...el.com>
>> ---
>>   tools/testing/selftests/bpf/xskxceiver.c | 166 +++++++++++++++++------
>>   tools/testing/selftests/bpf/xskxceiver.h |   8 +-
>>   2 files changed, 134 insertions(+), 40 deletions(-)
> 
> I don't think these grammar suggestions require a new revision, so:
> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>

I cleaned these up while applying. Shibin, please take care of this before sending
out next time, thanks guys!