Hi Ting,
> -----Original Message-----
> From: dev <dev-boun...@dpdk.org> On Behalf Of Ting Xu
> Sent: Wednesday, May 13, 2020 11:08 AM
> To: dev@dpdk.org
> Cc: tho...@monjalon.net; Yigit, Ferruh <ferruh.yi...@intel.com>;
> arybche...@solarflare.com; sta...@dpdk.org
> Subject: [dpdk-dev] [PATCH v4] app/testpmd: fix DCB set failure
The fix is no longer in testpmd, so the commit line should be "ethdev: fix DCB
set failure".
> When set DCB in testpmd, there is a segmentation fault. It is because the
> local variable rss_conf in get_eth_dcb_conf() is not cleared, so that the
> pointer member variable rss_key has a random address, which leads to an
> error in the following processing. This patch initialized the local variable
> rss_conf to avoid this situation.
The commit message should probably be revised.
>
> Fixes: ac7c491c3fec ("app/testpmd: fix DCB config")
Also the Fixes line may need to change.
> Cc: sta...@dpdk.org
>
> Signed-off-by: Ting Xu <ting...@intel.com>
>
> ---
> V3->v4: fix build failure
> v2->v3: move memset to rte_eth_dev_rss_hash_conf_get from testpmd
> v1->v2: modify commit log, move memset to else leg
> ---
> lib/librte_ethdev/rte_ethdev.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index 8e10a6fc3..1f6ca742a 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -3549,6 +3549,8 @@ rte_eth_dev_rss_hash_conf_get(uint16_t port_id,
> {
> struct rte_eth_dev *dev;
>
> + memset(rss_conf, 0, sizeof(*rss_conf));
The memset call should be moved to after the error checks to just before the
function is called.
> +
> RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
> dev = &rte_eth_devices[port_id];
> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rss_hash_conf_get,
> -ENOTSUP);
> --
> 2.17.1
Regards,
Bernard.
