[dpdk-dev] [PATCH] net/netvsc: fix rndis packet addresses

[Kevin Traynor]

On 18/09/2020 19:53, Long Li wrote:
> From: Long Li <longli at microsoft.com>
> 
> The address should be calculated before type cast, not after.
> 

This is being requested for 18.11.10 as it is fixing a reported
regression introduced in 18.11.9.

If netvsc maintainers agree and it is merged in DPDK mainline this week,
I can take it into 18.11.10, otherwise it will be for 18.11.11.

Souvik, maybe you can give tested-by tags?

> Fixes: cc02518 ("net/netvsc: split send buffers from Tx descriptors")
> Cc: stable at dpdk.org
> 
> Reported-by: Souvik Dey <sodey at rbbn.com>
> Signed-off-by: Long Li <longli at microsoft.com>
> ---
>  drivers/net/netvsc/hn_rxtx.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/netvsc/hn_rxtx.c b/drivers/net/netvsc/hn_rxtx.c
> index 813f8c3cc..70f8b8332 100644
> --- a/drivers/net/netvsc/hn_rxtx.c
> +++ b/drivers/net/netvsc/hn_rxtx.c
> @@ -160,8 +160,8 @@ static void hn_txd_init(struct rte_mempool *mp __rte_unused,
>  
>  	txd->queue_id = txq->queue_id;
>  	txd->chim_index = NVS_CHIM_IDX_INVALID;
> -	txd->rndis_pkt = (struct rndis_packet_msg *)(char *)txq->tx_rndis
> -		+ idx * HN_RNDIS_PKT_ALIGNED;
> +	txd->rndis_pkt = (struct rndis_packet_msg *)((char *)txq->tx_rndis
> +		+ idx * HN_RNDIS_PKT_ALIGNED);
>  }
>  
>  int
>