* [dpdk-dev] [PATCH] net/mlx5: fix link speed
@ 2018-02-05 12:01 Yuanhan Liu
2018-02-05 12:28 ` Nélio Laranjeiro
0 siblings, 1 reply; 3+ messages in thread
From: Yuanhan Liu @ 2018-02-05 12:01 UTC (permalink / raw)
To: dev
Cc: Adrien Mazarguil, Nelio Laranjeiro, Yongseok Koh, Shahaf Shuler,
Yuanhan Liu, stable
When the link is down, mlx5 kernel driver reports the link speed as -1
(UNKNOWN_SPEED). We need turn it to 0 for such case, otherwise, it
will be re-queried again due to the link_speed is not 0, due to following
code:
1201 if (((link->link_speed == 0) && link->link_status) ||
1202 ((link->link_speed != 0) && !link->link_status)) {
1203 /*
1204 * Inconsistent status. Event likely occurred before the
1205 * kernel netdevice exposes the new status.
1206 */
Fixes: 188408719888 ("net/mlx5: fix support for newer link speeds")
Cc: stable@dpdk.org
Signed-off-by: Yuanhan Liu <yliu@fridaylinux.org>
---
drivers/net/mlx5/mlx5_ethdev.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 6665076..492ca07 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -808,6 +808,10 @@ mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
return -1;
}
dev_link.link_speed = ecmd->speed;
+ if (link_speed == -1)
+ dev_link.link_speed = 0;
+ else
+ dev_link.link_speed = link_speed;
sc = ecmd->link_mode_masks[0] |
((uint64_t)ecmd->link_mode_masks[1] << 32);
priv->link_speed_capa = 0;
--
2.7.4
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [dpdk-dev] [PATCH] net/mlx5: fix link speed
2018-02-05 12:01 [dpdk-dev] [PATCH] net/mlx5: fix link speed Yuanhan Liu
@ 2018-02-05 12:28 ` Nélio Laranjeiro
2018-02-05 13:39 ` Shahaf Shuler
0 siblings, 1 reply; 3+ messages in thread
From: Nélio Laranjeiro @ 2018-02-05 12:28 UTC (permalink / raw)
To: Yuanhan Liu; +Cc: dev, Adrien Mazarguil, Yongseok Koh, Shahaf Shuler, stable
On Mon, Feb 05, 2018 at 08:01:44PM +0800, Yuanhan Liu wrote:
> When the link is down, mlx5 kernel driver reports the link speed as -1
> (UNKNOWN_SPEED). We need turn it to 0 for such case, otherwise, it
> will be re-queried again due to the link_speed is not 0, due to following
> code:
>
> 1201 if (((link->link_speed == 0) && link->link_status) ||
> 1202 ((link->link_speed != 0) && !link->link_status)) {
> 1203 /*
> 1204 * Inconsistent status. Event likely occurred before the
> 1205 * kernel netdevice exposes the new status.
> 1206 */
>
> Fixes: 188408719888 ("net/mlx5: fix support for newer link speeds")
>
> Cc: stable@dpdk.org
> Signed-off-by: Yuanhan Liu <yliu@fridaylinux.org>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
> ---
> drivers/net/mlx5/mlx5_ethdev.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
> index 6665076..492ca07 100644
> --- a/drivers/net/mlx5/mlx5_ethdev.c
> +++ b/drivers/net/mlx5/mlx5_ethdev.c
> @@ -808,6 +808,10 @@ mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
> return -1;
> }
> dev_link.link_speed = ecmd->speed;
> + if (link_speed == -1)
> + dev_link.link_speed = 0;
> + else
> + dev_link.link_speed = link_speed;
> sc = ecmd->link_mode_masks[0] |
> ((uint64_t)ecmd->link_mode_masks[1] << 32);
> priv->link_speed_capa = 0;
> --
> 2.7.4
>
Thanks,
--
Nélio Laranjeiro
6WIND
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [dpdk-dev] [PATCH] net/mlx5: fix link speed
2018-02-05 12:28 ` Nélio Laranjeiro
@ 2018-02-05 13:39 ` Shahaf Shuler
0 siblings, 0 replies; 3+ messages in thread
From: Shahaf Shuler @ 2018-02-05 13:39 UTC (permalink / raw)
To: Nélio Laranjeiro, Yuanhan Liu
Cc: dev, Adrien Mazarguil, Yongseok Koh, stable
Monday, February 5, 2018 2:29 PM, Nélio Laranjeiro:
> Subject: Re: [PATCH] net/mlx5: fix link speed
>
> On Mon, Feb 05, 2018 at 08:01:44PM +0800, Yuanhan Liu wrote:
> > When the link is down, mlx5 kernel driver reports the link speed as -1
> > (UNKNOWN_SPEED). We need turn it to 0 for such case, otherwise, it
> > will be re-queried again due to the link_speed is not 0, due to
> > following
> > code:
> >
> > 1201 if (((link->link_speed == 0) && link->link_status) ||
> > 1202 ((link->link_speed != 0) && !link->link_status)) {
> > 1203 /*
> > 1204 * Inconsistent status. Event likely occurred before the
> > 1205 * kernel netdevice exposes the new status.
> > 1206 */
> >
> > Fixes: 188408719888 ("net/mlx5: fix support for newer link speeds")
> >
> > Cc: stable@dpdk.org
> > Signed-off-by: Yuanhan Liu <yliu@fridaylinux.org>
>
> Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
>
> > ---
> > drivers/net/mlx5/mlx5_ethdev.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> > diff --git a/drivers/net/mlx5/mlx5_ethdev.c
> > b/drivers/net/mlx5/mlx5_ethdev.c index 6665076..492ca07 100644
> > --- a/drivers/net/mlx5/mlx5_ethdev.c
> > +++ b/drivers/net/mlx5/mlx5_ethdev.c
> > @@ -808,6 +808,10 @@ mlx5_link_update_unlocked_gs(struct
> rte_eth_dev *dev, int wait_to_complete)
> > return -1;
> > }
> > dev_link.link_speed = ecmd->speed;
> > + if (link_speed == -1)
Looks like link_speed is not defined (code is not compiling).
> > + dev_link.link_speed = 0;
> > + else
> > + dev_link.link_speed = link_speed;
> > sc = ecmd->link_mode_masks[0] |
> > ((uint64_t)ecmd->link_mode_masks[1] << 32);
> > priv->link_speed_capa = 0;
> > --
> > 2.7.4
> >
>
> Thanks,
>
> --
> Nélio Laranjeiro
> 6WIND
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-02-05 12:01 [dpdk-dev] [PATCH] net/mlx5: fix link speed Yuanhan Liu
2018-02-05 12:28 ` Nélio Laranjeiro
2018-02-05 13:39 ` Shahaf Shuler
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