[PATCH] net/netvsc: fix number Tx queues > Rx queues

[Stephen Hemminger]

On Thu, 29 Feb 2024 19:29:11 +0000
Alan Elder <alan.elder at microsoft.com> wrote:

> The previous code allowed the number of Tx queues to be set higher than
> the number of Rx queues.  If a packet was sent on a Tx queue with index
> >= number Rx queues there was a segfault.  
> 
> This commit fixes the issue by creating an Rx queue for every Tx queue
> meaning that an event buffer is allocated to handle receiving Tx
> completion messages.
> 
> mbuf pool and Rx ring are not allocated for these additional Rx queues
> and RSS configuration ensures that no packets are received on them.
> 
> Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device")
> Cc: sthemmin at microsoft.com
> Cc: stable at dpdk.org
> 
> Signed-off-by: Alan Elder <alan.elder at microsoft.com>

Don't have Azure account to test, but looks good to me.

Acked-by: Stephen Hemminger <stephen at networkplumber.org>