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| author | Jakub Kicinski <kuba@kernel.org> | 2020-03-05 06:15:42 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-05 21:12:35 +0100 |
| commit | a51e520653a635051298532a2066c3346d6acd29 (patch) | |
| tree | 05912b7f3192e4a8f8c77228f6c42552ea05cd0e /drivers/net/virtio_net.c | |
| parent | e1000e: reject unsupported coalescing params (diff) | |
| download | linux-a51e520653a635051298532a2066c3346d6acd29.tar.xz linux-a51e520653a635051298532a2066c3346d6acd29.zip | |
virtio_net: reject unsupported coalescing params
Set ethtool_ops->supported_coalesce_params to let
the core reject unsupported coalescing parameters.
This driver correctly rejects all unsupported parameters.
As a side effect of these changes the error code for
unsupported params changes from EINVAL to EOPNOTSUPP.
v2: correctly handle rx-frames (and adjust the commit msg)
v3: adjust commit message for new error code and member name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/virtio_net.c')
| -rw-r--r-- | drivers/net/virtio_net.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 84c0d9581f93..11f722460513 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2202,23 +2202,14 @@ static int virtnet_get_link_ksettings(struct net_device *dev, static int virtnet_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) { - struct ethtool_coalesce ec_default = { - .cmd = ETHTOOL_SCOALESCE, - .rx_max_coalesced_frames = 1, - }; struct virtnet_info *vi = netdev_priv(dev); int i, napi_weight; - if (ec->tx_max_coalesced_frames > 1) + if (ec->tx_max_coalesced_frames > 1 || + ec->rx_max_coalesced_frames != 1) return -EINVAL; - ec_default.tx_max_coalesced_frames = ec->tx_max_coalesced_frames; napi_weight = ec->tx_max_coalesced_frames ? NAPI_POLL_WEIGHT : 0; - - /* disallow changes to fields not explicitly tested above */ - if (memcmp(ec, &ec_default, sizeof(ec_default))) - return -EINVAL; - if (napi_weight ^ vi->sq[0].napi.weight) { if (dev->flags & IFF_UP) return -EBUSY; @@ -2273,6 +2264,7 @@ static void virtnet_update_settings(struct virtnet_info *vi) } static const struct ethtool_ops virtnet_ethtool_ops = { + .supported_coalesce_params = ETHTOOL_COALESCE_MAX_FRAMES, .get_drvinfo = virtnet_get_drvinfo, .get_link = ethtool_op_get_link, .get_ringparam = virtnet_get_ringparam, |