[dpdk-stable] "net/hns3: fix reporting undefined speed" is incompatible with 19.11.x

[Min Hu (Connor)]

Hi，Christian,
	Agreed, this patch can be abandoned in 19.11x， It can backport
to 20.11.x.

在 2021/6/1 16:05, Christian Ehrhardt 写道:
> Hi,
> this was targeted for dpdk stable releases.
> 
> commit b6579e3db794be36637a66e009199a1e7451e995
> Author: Huisong Li <lihuisong at huawei.com>
> Date:   Tue Mar 23 21:45:51 2021 +0800
> 
>      net/hns3: fix reporting undefined speed
> 
> It introduced
> 
> [  403s] /home/abuild/rpmbuild/BUILD/dpdk-1622533160.757d17c4c/drivers/net/hns3/hns3_ethdev.c:
> In function 'hns3_dev_link_update':
> [  403s] /home/abuild/rpmbuild/BUILD/dpdk-1622533160.757d17c4c/drivers/net/hns3/hns3_ethdev.c:2618:26:
> error: 'ETH_SPEED_NUM_UNKNOWN' undeclared (first use in this function)
> [  403s]     new_link.link_speed = ETH_SPEED_NUM_UNKNOWN;
> [  403s]                           ^
> 
> But that requires this change from 20.11:
> 
> commit 810b17d116f03783843d23ac900a3794675f6616
> Author: Thomas Monjalon <thomas at monjalon.net>
> Date:   Tue Aug 11 11:52:20 2020 +0300
> 
>      ethdev: allow unknown link speed
> 
> I'm unsure if introducing ETH_SPEED_NUM_UNKNOWN in 19.11 might break
> other bits not aware of it so for now I have removed that formerly
> queued patch from 19.11.9.
> 
> If you want it applied to 19.11.9 or later please have a look and
> consider providing a backport for it - or alternatively if you think it
> is not important for 19.11.x let me know about that.
>