[dpdk-dev] [PATCH 4/9] net/ipn3ke: fix incorrect commit check logic

[Kevin Traynor]

On 08/11/2019 14:45, Xu, Rosen wrote:
> Hi Kevin,
> 
> Too many things in these days, sorry for late reply.
> 

Hi Rosen, no problem, thanks for the Ack.

Kevin.

>> -----Original Message-----
>> From: Kevin Traynor [mailto:ktraynor at redhat.com]
>> Sent: Tuesday, November 05, 2019 23:42
>> To: David Marchand <david.marchand at redhat.com>; Xu, Rosen
>> <rosen.xu at intel.com>
>> Cc: dev <dev at dpdk.org>; dpdk stable <stable at dpdk.org>; Ye, Xiaolong
>> <xiaolong.ye at intel.com>
>> Subject: Re: [dpdk-dev] [PATCH 4/9] net/ipn3ke: fix incorrect commit check
>> logic
>>
>> On 30/10/2019 07:59, David Marchand wrote:
>>> Hello Rosen,
>>>
>>> Review please.
>>>
>>
>> Ping Rosen.
>>
>>> On Tue, Oct 1, 2019 at 3:04 PM Kevin Traynor <ktraynor at redhat.com>
>> wrote:
>>>>
>>>> Coverity is complaining about identical code regardless of which
>>>> branch of the if else is taken. Functionally it means an error will
>>>> always be returned if this if else is hit. Remove the else branch.
>>>>
>>>>     CID 337928 (#1 of 1): Identical code for different branches
>>>>     (IDENTICAL_BRANCHES)identical_branches: The same code is executed
>>>>     regardless of whether n->level != IPN3KE_TM_NODE_LEVEL_COS ||
>>>>     n->n_children != 0U is true, because the 'then' and 'else' branches
>>>>     are identical. Should one of the branches be modified, or the entire
>>>>     'if' statement replaced?
> 
> Yes, you are right.
> 
>>>> 1506  if (n->level != IPN3KE_TM_NODE_LEVEL_COS ||
>>>> 1507          n->n_children != 0) {
>>>> 1508          return -rte_tm_error_set(error,
>>>> 1509                  EINVAL,
>>>> 1510                  RTE_TM_ERROR_TYPE_UNSPECIFIED,
>>>> 1511                  NULL,
>>>> 1512                  rte_strerror(EINVAL));
>>>>     else_branch: The else branch, identical to the then branch.
>>>> 1513  } else {
>>>> 1514          return -rte_tm_error_set(error,
>>>> 1515                  EINVAL,
>>>> 1516                  RTE_TM_ERROR_TYPE_UNSPECIFIED,
>>>> 1517                  NULL,
>>>> 1518                  rte_strerror(EINVAL));
>>>> 1519  }
>>>>
>>>> Coverity issue: 337928
>>>> Fixes: c820468ac99c ("net/ipn3ke: support TM")
>>>> Cc: rosen.xu at intel.com
>>>> Cc: stable at dpdk.org
>>>>
>>>> Signed-off-by: Kevin Traynor <ktraynor at redhat.com>
>>>> ---
>>>>  drivers/net/ipn3ke/ipn3ke_tm.c | 6 ------
>>>>  1 file changed, 6 deletions(-)
>>>>
>>>> diff --git a/drivers/net/ipn3ke/ipn3ke_tm.c
>>>> b/drivers/net/ipn3ke/ipn3ke_tm.c index adf02c157..a93145d59 100644
>>>> --- a/drivers/net/ipn3ke/ipn3ke_tm.c
>>>> +++ b/drivers/net/ipn3ke/ipn3ke_tm.c
>>>> @@ -1511,10 +1511,4 @@ ipn3ke_tm_hierarchy_commit_check(struct
>> rte_eth_dev *dev,
>>>>                                                 NULL,
>>>>                                                 rte_strerror(EINVAL));
>>>> -                       } else {
>>>> -                               return -rte_tm_error_set(error,
>>>> -                                               EINVAL,
>>>> -                                               RTE_TM_ERROR_TYPE_UNSPECIFIED,
>>>> -                                               NULL,
>>>> -                                               rte_strerror(EINVAL));
>>>>                         }
>>>>                 }
>>>> --
>>>> 2.21.0
>>>>
>>>
> 
> Reviewed-by: Rosen Xu <rosen.xu at intel.com>
>