diff options
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_main.c')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index d576c7aad89..6fdc9e78da0 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -215,6 +215,37 @@ static int ipoib_change_mtu(struct net_device *dev, int new_mtu) return 0; } +int ipoib_set_mode(struct net_device *dev, const char *buf) +{ + struct ipoib_dev_priv *priv = netdev_priv(dev); + + /* flush paths if we switch modes so that connections are restarted */ + if (IPOIB_CM_SUPPORTED(dev->dev_addr) && !strcmp(buf, "connected\n")) { + set_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); + ipoib_warn(priv, "enabling connected mode " + "will cause multicast packet drops\n"); + netdev_update_features(dev); + rtnl_unlock(); + priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM; + + ipoib_flush_paths(dev); + rtnl_lock(); + return 0; + } + + if (!strcmp(buf, "datagram\n")) { + clear_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); + netdev_update_features(dev); + dev_set_mtu(dev, min(priv->mcast_mtu, dev->mtu)); + rtnl_unlock(); + ipoib_flush_paths(dev); + rtnl_lock(); + return 0; + } + + return -EINVAL; +} + static struct ipoib_path *__path_find(struct net_device *dev, void *gid) { struct ipoib_dev_priv *priv = netdev_priv(dev); |