diff mbox

[1/1] net: thunderx: avoid exposing kernel stack

Message ID 1462747578-6147-1-git-send-email-xypron.glpk@gmx.de (mailing list archive)
State New, archived
Headers show

Commit Message

Heinrich Schuchardt May 8, 2016, 10:46 p.m. UTC
Reserved fields should be set to zero to avoid exposing
bits from the kernel stack.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Sunil Kovvuri May 9, 2016, 6:57 p.m. UTC | #1
Thanks for fixing, changes look okay.

Sunil.

On Sun, May 8, 2016 at 3:46 PM, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
> Reserved fields should be set to zero to avoid exposing
> bits from the kernel stack.
>
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> ---
>  drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
> index 8acd7c0..0ff8e60 100644
> --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
> +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
> @@ -533,6 +533,7 @@ static void nicvf_rcv_queue_config(struct nicvf *nic, struct queue_set *qs,
>                 nicvf_config_vlan_stripping(nic, nic->netdev->features);
>
>         /* Enable Receive queue */
> +       memset(&rq_cfg, 0, sizeof(struct rq_cfg));
>         rq_cfg.ena = 1;
>         rq_cfg.tcp_ena = 0;
>         nicvf_queue_reg_write(nic, NIC_QSET_RQ_0_7_CFG, qidx, *(u64 *)&rq_cfg);
> @@ -565,6 +566,7 @@ void nicvf_cmp_queue_config(struct nicvf *nic, struct queue_set *qs,
>                               qidx, (u64)(cq->dmem.phys_base));
>
>         /* Enable Completion queue */
> +       memset(&cq_cfg, 0, sizeof(struct cq_cfg));
>         cq_cfg.ena = 1;
>         cq_cfg.reset = 0;
>         cq_cfg.caching = 0;
> @@ -613,6 +615,7 @@ static void nicvf_snd_queue_config(struct nicvf *nic, struct queue_set *qs,
>                               qidx, (u64)(sq->dmem.phys_base));
>
>         /* Enable send queue  & set queue size */
> +       memset(&sq_cfg, 0, sizeof(struct sq_cfg));
>         sq_cfg.ena = 1;
>         sq_cfg.reset = 0;
>         sq_cfg.ldwb = 0;
> @@ -649,6 +652,7 @@ static void nicvf_rbdr_config(struct nicvf *nic, struct queue_set *qs,
>
>         /* Enable RBDR  & set queue size */
>         /* Buffer size should be in multiples of 128 bytes */
> +       memset(&rbdr_cfg, 0, sizeof(struct rbdr_cfg));
>         rbdr_cfg.ena = 1;
>         rbdr_cfg.reset = 0;
>         rbdr_cfg.ldwb = 0;
> --
> 2.1.4
>
diff mbox

Patch

diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
index 8acd7c0..0ff8e60 100644
--- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
@@ -533,6 +533,7 @@  static void nicvf_rcv_queue_config(struct nicvf *nic, struct queue_set *qs,
 		nicvf_config_vlan_stripping(nic, nic->netdev->features);
 
 	/* Enable Receive queue */
+	memset(&rq_cfg, 0, sizeof(struct rq_cfg));
 	rq_cfg.ena = 1;
 	rq_cfg.tcp_ena = 0;
 	nicvf_queue_reg_write(nic, NIC_QSET_RQ_0_7_CFG, qidx, *(u64 *)&rq_cfg);
@@ -565,6 +566,7 @@  void nicvf_cmp_queue_config(struct nicvf *nic, struct queue_set *qs,
 			      qidx, (u64)(cq->dmem.phys_base));
 
 	/* Enable Completion queue */
+	memset(&cq_cfg, 0, sizeof(struct cq_cfg));
 	cq_cfg.ena = 1;
 	cq_cfg.reset = 0;
 	cq_cfg.caching = 0;
@@ -613,6 +615,7 @@  static void nicvf_snd_queue_config(struct nicvf *nic, struct queue_set *qs,
 			      qidx, (u64)(sq->dmem.phys_base));
 
 	/* Enable send queue  & set queue size */
+	memset(&sq_cfg, 0, sizeof(struct sq_cfg));
 	sq_cfg.ena = 1;
 	sq_cfg.reset = 0;
 	sq_cfg.ldwb = 0;
@@ -649,6 +652,7 @@  static void nicvf_rbdr_config(struct nicvf *nic, struct queue_set *qs,
 
 	/* Enable RBDR  & set queue size */
 	/* Buffer size should be in multiples of 128 bytes */
+	memset(&rbdr_cfg, 0, sizeof(struct rbdr_cfg));
 	rbdr_cfg.ena = 1;
 	rbdr_cfg.reset = 0;
 	rbdr_cfg.ldwb = 0;