[dpdk-dev] net/ixgbe: fix busy wait in ixgbevf_check_link()
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Commit Message
From: "Charles (Chas) Williams" <chas3@att.com>
If we haven't set wait_to_complete, there is no need to busy wait until we
have a link status. Applications, like bonding, use the wait_to_complete
flag to indicate that they will be doing their own busy wait and will
likely be polling again shortly.
Fixes: dc66e5fd01b9 ("net/ixgbe: improve link state check on VF")
Signed-off-by: Chas Williams <chas3@att.com>
---
drivers/net/ixgbe/ixgbe_ethdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Comments
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Chas Williams
> Sent: Friday, February 2, 2018 6:39 AM
> To: dev@dpdk.org
> Cc: Lu, Wenzhuo; Ananyev, Konstantin; Charles (Chas) Williams
> Subject: [dpdk-dev] [PATCH] net/ixgbe: fix busy wait in ixgbevf_check_link()
>
> From: "Charles (Chas) Williams" <chas3@att.com>
>
> If we haven't set wait_to_complete, there is no need to busy wait until we
> have a link status. Applications, like bonding, use the wait_to_complete flag to
> indicate that they will be doing their own busy wait and will likely be polling
> again shortly.
>
> Fixes: dc66e5fd01b9 ("net/ixgbe: improve link state check on VF")
>
> Signed-off-by: Chas Williams <chas3@att.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
BTW, the title should be corrected by following the format rule of patches on
DPDK community. Basically it shouldn't mention the function name in the title.
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Zhang, Helin
> Sent: Friday, April 6, 2018 11:09 PM
> To: Chas Williams; dev@dpdk.org
> Cc: Lu, Wenzhuo; Ananyev, Konstantin; Charles (Chas) Williams
> Subject: Re: [dpdk-dev] [PATCH] net/ixgbe: fix busy wait in ixgbevf_check_link()
>
>
>
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Chas Williams
> > Sent: Friday, February 2, 2018 6:39 AM
> > To: dev@dpdk.org
> > Cc: Lu, Wenzhuo; Ananyev, Konstantin; Charles (Chas) Williams
> > Subject: [dpdk-dev] [PATCH] net/ixgbe: fix busy wait in
> > ixgbevf_check_link()
> >
> > From: "Charles (Chas) Williams" <chas3@att.com>
> >
> > If we haven't set wait_to_complete, there is no need to busy wait
> > until we have a link status. Applications, like bonding, use the
> > wait_to_complete flag to indicate that they will be doing their own
> > busy wait and will likely be polling again shortly.
> >
> > Fixes: dc66e5fd01b9 ("net/ixgbe: improve link state check on VF")
> >
> > Signed-off-by: Chas Williams <chas3@att.com>
> Acked-by: Helin Zhang <helin.zhang@intel.com>
Applied to dpdk-next-net-intel, with title modifcations. Thanks!
/Helin
>
> BTW, the title should be corrected by following the format rule of patches on
> DPDK community. Basically it shouldn't mention the function name in the title.
@@ -3861,7 +3861,7 @@ ixgbevf_check_link(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
/* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
* before the link status is correct
*/
- if (mac->type == ixgbe_mac_82599_vf) {
+ if (mac->type == ixgbe_mac_82599_vf && wait_to_complete) {
int i;
for (i = 0; i < 5; i++) {