Re: [PATCH net-next] net: broadcom: use ethtool string helpers

[Jacob Keller <jacob.e.keller@intel.com>]

On 10/29/2024 4:43 PM, Rosen Penev wrote:
> On Tue, Oct 29, 2024 at 4:03 PM Jakub Kicinski <kuba@kernel.org> wrote:
>>
>> On Tue, 22 Oct 2024 18:27:34 -0700 Rosen Penev wrote:
>>> @@ -3220,13 +3212,13 @@ static void bnx2x_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
>>>                       start = 0;
>>>               else
>>>                       start = 4;
>>> -             memcpy(buf, bnx2x_tests_str_arr + start,
>>> -                    ETH_GSTRING_LEN * BNX2X_NUM_TESTS(bp));
>>> +             for (i = start; i < BNX2X_NUM_TESTS(bp); i++)
>>> +                     ethtool_puts(&buf, bnx2x_tests_str_arr[i]);
>>
>> I don't think this is equivalent.
> What's wrong here?

I was trying to figure that out too...

I guess the memcpy does everything all at once and this does it via
iteration...?

memcpy would actually result in copying the padding between strings in
the bnx2x_tests_str_arr, while the ethtool_puts turns into strscpy which
doesn't pad the tail of the buffer with zeros?

>>
>> Also, please split bnx2x to a separate patch, the other drivers in this
>> patch IIUC are small embedded ones, the bnx2x is an "enterprise
>> product".
>> --
>> pw-bot: cr