diff options
| author | Feras Daoud <ferasda@mellanox.com> | 2016-12-28 15:47:21 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-01-12 22:01:02 +0300 |
| commit | 80b5b35aba62232521b31440f0a3cf6caa033849 (patch) | |
| tree | 2e799f737c7512572ec11f3c622299f0f985db1a /drivers/infiniband/ulp/ipoib/ipoib_main.c | |
| parent | 29da686dff757968fbf5a9bb5246070ddf602664 (diff) | |
| download | linux-80b5b35aba62232521b31440f0a3cf6caa033849.tar.xz | |
IB/ipoib: Set device connection mode only when needed
When changing the connection mode, the ipoib_set_mode function
did not check if the previous connection mode equals to the
new one. This commit adds the required check and return 0 if the new
mode equals to the previous one.
Fixes: 839fcaba355a ("IPoIB: Connected mode experimental support")
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_main.c')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_main.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index b2a75d85bc23..cbd06a882a60 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -474,6 +474,13 @@ int ipoib_set_mode(struct net_device *dev, const char *buf) { struct ipoib_dev_priv *priv = netdev_priv(dev); + if ((test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags) && + !strcmp(buf, "connected\n")) || + (!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags) && + !strcmp(buf, "datagram\n"))) { + return 0; + } + /* 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); |