[dpdk-dev] [PATCH] lib/librte_ether: error handling on MAC address replay

[Igor Ryzhov]

Hello Steve,

Thank you for the patch.

I think a couple of improvements can be done:
1. Function existence check – if (*dev->dev_ops->mac_addr_add) – can be
taken out of the loop. We don't need to check it on each iteration.
2. I'm not completely sure, but I think loop can be started from 1, not
from 0, because mac_pool_sel[0] is always zero. Am I right?

Best regards,
Igor

On Thu, Jan 19, 2017 at 10:35 PM, Steve Shin (jonshin) <jonshin at cisco.com>
wrote:

> Dear maintainer,
>
> Sorry that I forgot to add “Fixes:” line as follows:
>
>        Fixes: 4bdefaade6d1 ("ethdev: VMDQ enhancements")
>
> Can you please add the above line as part of comment?
>
> Thanks,
> Steve
>
> On 1/19/17, 10:47 AM, "Steve Shin (jonshin)" <jonshin at cisco.com> wrote:
>
>     This patch fixes a bug in replaying MAC address to the hardware
>     in rte_eth_dev_config_restore() routine.
>
>     Signed-off-by: Steve Shin <jonshin at cisco.com>
>     ---
>      lib/librte_ether/rte_ethdev.c | 10 ++++++----
>      1 file changed, 6 insertions(+), 4 deletions(-)
>
>     diff --git a/lib/librte_ether/rte_ethdev.c
> b/lib/librte_ether/rte_ethdev.c
>     index 4790faf..7e01f10 100644
>     --- a/lib/librte_ether/rte_ethdev.c
>     +++ b/lib/librte_ether/rte_ethdev.c
>     @@ -951,10 +951,12 @@ rte_eth_dev_config_restore(uint8_t port_id)
>                         continue;
>
>                 /* add address to the hardware */
>     -           if  (*dev->dev_ops->mac_addr_add &&
>     -                   (dev->data->mac_pool_sel[i] & (1ULL << pool)))
>     -                   (*dev->dev_ops->mac_addr_add)(dev, &addr, i,
> pool);
>     -           else {
>     +           if  (*dev->dev_ops->mac_addr_add) {
>     +                   if (dev->data->mac_pool_sel[i] & (1ULL << pool))
>     +                           (*dev->dev_ops->mac_addr_add)(dev, &addr,
> i, pool);
>     +                   else
>     +                           continue;
>     +           } else {
>                         RTE_PMD_DEBUG_TRACE("port %d: MAC address array
> not supported\n",
>                                         port_id);
>                         /* exit the loop but not return an error */
>     --
>     2.9.3
>
>
>
>