lkml.org 
[lkml]   [2013]   [Jan]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch] NTB: fix pointer math issues
On Wed, Jan 23, 2013 at 10:26:05PM +0300, Dan Carpenter wrote:
> ->remote_rx_info and ->rx_info are struct ntb_rx_info pointers. If we
> add sizeof(struct ntb_rx_info) then it goes too far.

Good catch, I'll add it to me pending patch queue.

Thanks,
Jon

>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
>
> diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c
> index e0bdfd7..676ee16 100644
> --- a/drivers/ntb/ntb_transport.c
> +++ b/drivers/ntb/ntb_transport.c
> @@ -486,7 +486,7 @@ static void ntb_transport_setup_qp_mw(struct ntb_transport *nt,
> (qp_num / NTB_NUM_MW * rx_size);
> rx_size -= sizeof(struct ntb_rx_info);
>
> - qp->rx_buff = qp->remote_rx_info + sizeof(struct ntb_rx_info);
> + qp->rx_buff = qp->remote_rx_info + 1;
> qp->rx_max_frame = min(transport_mtu, rx_size);
> qp->rx_max_entry = rx_size / qp->rx_max_frame;
> qp->rx_index = 0;
> @@ -780,7 +780,7 @@ static void ntb_transport_init_queue(struct ntb_transport *nt,
> (qp_num / NTB_NUM_MW * tx_size);
> tx_size -= sizeof(struct ntb_rx_info);
>
> - qp->tx_mw = qp->rx_info + sizeof(struct ntb_rx_info);
> + qp->tx_mw = qp->rx_info + 1;
> qp->tx_max_frame = min(transport_mtu, tx_size);
> qp->tx_max_entry = tx_size / qp->tx_max_frame;
> qp->tx_index = 0;


\
 
 \ /
  Last update: 2013-01-28 04:21    [W:0.035 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site