Messages in this thread Patch in this message | | | From | Si-Wei Liu <> | Subject | [PATCH v3 1/6] vdpa: fix improper error message when adding vdpa dev | Date | Mon, 6 Feb 2023 15:07:55 -0800 |
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In below example, before the fix, mtu attribute is supported by the parent mgmtdev, but the error message showing "All provided are not supported" is just misleading.
$ vdpa mgmtdev show vdpasim_net: supported_classes net max_supported_vqs 3 dev_features MTU MAC CTRL_VQ CTRL_MAC_ADDR ANY_LAYOUT VERSION_1 ACCESS_PLATFORM
$ vdpa dev add mgmtdev vdpasim_net name vdpasim0 mtu 5000 max_vqp 2 Error: vdpa: All provided attributes are not supported. kernel answers: Operation not supported
After fix, the relevant error message will be like:
$ vdpa dev add mgmtdev vdpasim_net name vdpasim0 mtu 5000 max_vqp 2 Error: vdpa: Some provided attributes are not supported: 0x1000. kernel answers: Operation not supported
Fixes: d8ca2fa5be1b ("vdpa: Enable user to set mac and mtu of vdpa device") Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com> Reviewed-by: Parav Pandit <parav@nvidia.com> Reviewed-by: Eli Cohen <elic@nvidia.com> --- drivers/vdpa/vdpa.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 8ef7aa1..3a82ca78 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -622,9 +622,11 @@ static int vdpa_nl_cmd_dev_add_set_doit(struct sk_buff *skb, struct genl_info *i err = PTR_ERR(mdev); goto err; } + if ((config.mask & mdev->config_attr_mask) != config.mask) { - NL_SET_ERR_MSG_MOD(info->extack, - "All provided attributes are not supported"); + NL_SET_ERR_MSG_FMT_MOD(info->extack, + "Some provided attributes are not supported: 0x%llx", + config.mask & ~mdev->config_attr_mask); err = -EOPNOTSUPP; goto err; } -- 1.8.3.1
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