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| author | Si-Wei Liu <si-wei.liu@oracle.com> | 2023-02-06 15:12:00 -0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-02-20 19:27:00 -0500 |
| commit | 6e6d39830bc681533d97af78e2066a7e9ab6b5d8 (patch) | |
| tree | e42ab2fbaa1c22736584739d70b2c638918c9e05 /drivers/vdpa | |
| parent | 275487b4be8969fdb15fd2d47510d358963629d6 (diff) | |
| download | linux-6e6d39830bc681533d97af78e2066a7e9ab6b5d8.tar.gz | |
vdpa: conditionally read STATUS in config space
The spec says:
status only exists if VIRTIO_NET_F_STATUS is set
Similar to MAC and MTU, vdpa_dev_net_config_fill() should read
STATUS conditionally depending on the feature bits.
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>
Message-Id: <1675725124-7375-3-git-send-email-si-wei.liu@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/vdpa.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index e71898ec5ce7d..c71eecb0a288e 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -848,18 +848,25 @@ static int vdpa_dev_net_mac_config_fill(struct sk_buff *msg, u64 features, sizeof(config->mac), config->mac); } +static int vdpa_dev_net_status_config_fill(struct sk_buff *msg, u64 features, + const struct virtio_net_config *config) +{ + u16 val_u16; + + if ((features & BIT_ULL(VIRTIO_NET_F_STATUS)) == 0) + return 0; + + val_u16 = __virtio16_to_cpu(true, config->status); + return nla_put_u16(msg, VDPA_ATTR_DEV_NET_STATUS, val_u16); +} + static int vdpa_dev_net_config_fill(struct vdpa_device *vdev, struct sk_buff *msg) { struct virtio_net_config config = {}; u64 features_device; - u16 val_u16; vdev->config->get_config(vdev, 0, &config, sizeof(config)); - val_u16 = __virtio16_to_cpu(true, config.status); - if (nla_put_u16(msg, VDPA_ATTR_DEV_NET_STATUS, val_u16)) - return -EMSGSIZE; - features_device = vdev->config->get_device_features(vdev); if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_FEATURES, features_device, @@ -872,6 +879,9 @@ static int vdpa_dev_net_config_fill(struct vdpa_device *vdev, struct sk_buff *ms if (vdpa_dev_net_mac_config_fill(msg, features_device, &config)) return -EMSGSIZE; + if (vdpa_dev_net_status_config_fill(msg, features_device, &config)) + return -EMSGSIZE; + return vdpa_dev_net_mq_config_fill(msg, features_device, &config); } |