diff options
author | sixiao@microsoft.com <sixiao@microsoft.com> | 2016-02-25 23:24:08 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2016-02-29 22:08:50 (GMT) |
commit | 49eb93892d8dfcf5dc5088e640f486d08572d8bf (patch) | |
tree | ebf8dcecb343fcf13f1020d118c210a1fbd6ebb9 /drivers/net | |
parent | c0affa19589bb198c15670af3b6a0d39b1b1755a (diff) | |
download | linux-49eb93892d8dfcf5dc5088e640f486d08572d8bf.tar.xz |
hv_netvsc: add ethtool support for set and get of settings
This patch allows the user to set and retrieve speed and duplex of the
hv_netvsc device via ethtool.
Example:
$ ethtool eth0
Settings for eth0:
...
Speed: Unknown!
Duplex: Unknown! (255)
...
$ ethtool -s eth0 speed 1000 duplex full
$ ethtool eth0
Settings for eth0:
...
Speed: 1000Mb/s
Duplex: Full
...
This is based on patches by Roopa Prabhu and Nikolay Aleksandrov.
Signed-off-by: Simon Xiao <sixiao@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/hyperv/hyperv_net.h | 4 | ||||
-rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 56 |
2 files changed, 60 insertions, 0 deletions
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index fcb92c0..b4c6878 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -658,6 +658,10 @@ struct net_device_context { struct netvsc_stats __percpu *tx_stats; struct netvsc_stats __percpu *rx_stats; + + /* Ethtool settings */ + u8 duplex; + u32 speed; }; /* Per netvsc device */ diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 2b6595e..0860849 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -799,6 +799,58 @@ static int netvsc_set_channels(struct net_device *net, goto do_set; } +static bool netvsc_validate_ethtool_ss_cmd(const struct ethtool_cmd *cmd) +{ + struct ethtool_cmd diff1 = *cmd; + struct ethtool_cmd diff2 = {}; + + ethtool_cmd_speed_set(&diff1, 0); + diff1.duplex = 0; + /* advertising and cmd are usually set */ + diff1.advertising = 0; + diff1.cmd = 0; + /* We set port to PORT_OTHER */ + diff2.port = PORT_OTHER; + + return !memcmp(&diff1, &diff2, sizeof(diff1)); +} + +static void netvsc_init_settings(struct net_device *dev) +{ + struct net_device_context *ndc = netdev_priv(dev); + + ndc->speed = SPEED_UNKNOWN; + ndc->duplex = DUPLEX_UNKNOWN; +} + +static int netvsc_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct net_device_context *ndc = netdev_priv(dev); + + ethtool_cmd_speed_set(cmd, ndc->speed); + cmd->duplex = ndc->duplex; + cmd->port = PORT_OTHER; + + return 0; +} + +static int netvsc_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct net_device_context *ndc = netdev_priv(dev); + u32 speed; + + speed = ethtool_cmd_speed(cmd); + if (!ethtool_validate_speed(speed) || + !ethtool_validate_duplex(cmd->duplex) || + !netvsc_validate_ethtool_ss_cmd(cmd)) + return -EINVAL; + + ndc->speed = speed; + ndc->duplex = cmd->duplex; + + return 0; +} + static int netvsc_change_mtu(struct net_device *ndev, int mtu) { struct net_device_context *ndevctx = netdev_priv(ndev); @@ -923,6 +975,8 @@ static const struct ethtool_ops ethtool_ops = { .get_channels = netvsc_get_channels, .set_channels = netvsc_set_channels, .get_ts_info = ethtool_op_get_ts_info, + .get_settings = netvsc_get_settings, + .set_settings = netvsc_set_settings, }; static const struct net_device_ops device_ops = { @@ -1115,6 +1169,8 @@ static int netvsc_probe(struct hv_device *dev, netif_set_real_num_tx_queues(net, nvdev->num_chn); netif_set_real_num_rx_queues(net, nvdev->num_chn); + netvsc_init_settings(net); + ret = register_netdev(net); if (ret != 0) { pr_err("Unable to register netdev.\n"); |