[dpdk-stable] [PATCH 19.11] net/netvsc: manage VF port under read/write lock

[Luca Boccassi]

On Tue, 2020-12-15 at 19:04 -0800, Long Li wrote:
> From: Stephen Hemminger <stephen at networkplumber.org>
> 
> [ upstream commit 81938ebb542f1ce19254f58705583a7f48a95216 ]
> 
> With multiple channels, the primary channel may receive notification
> that VF has been added or removed while secondary channel is in
> process of doing receive or transmit.  Resolve this race by converting
> existing vf_lock to a reader/writer lock.
> 
> Users of lock (tx/rx/stats) acquire for read, and actions like
> add/remove acquire it for write.
> 
> Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> Signed-off-by: Long Li <longli at microsoft.com>
> ---
>  drivers/net/netvsc/hn_ethdev.c |  2 +-
>  drivers/net/netvsc/hn_rxtx.c   |  8 ++-
>  drivers/net/netvsc/hn_var.h    | 10 ++--
>  drivers/net/netvsc/hn_vf.c     | 99 ++++++++++++++++------------------
>  4 files changed, 59 insertions(+), 60 deletions(-)

Thank you, applied.

-- 
Kind regards,
Luca Boccassi