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authorKaike Wan <kaike.wan@intel.com>2020-05-11 19:06:18 +0300
committerJason Gunthorpe <jgg@mellanox.com>2020-05-21 17:23:55 +0300
commit6d72344cf6c47010cc2055a832e16c7fcdd16f82 (patch)
treed8eaf896a5ca9df7d49473d51cfa4e85c88af94f /drivers/infiniband/ulp/ipoib/ipoib_main.c
parent19d8b90a509f7fd9a3224cca6df160a413a4d521 (diff)
downloadlinux-6d72344cf6c47010cc2055a832e16c7fcdd16f82.tar.xz
IB/ipoib: Increase ipoib Datagram mode MTU's upper limit
Currently the ipoib UD mtu is restricted to 4K bytes. Remove this limitation so that the IPOIB module can potentially use an MTU (in UD mode) that is bounded by the MTU of the underlying device. A field is added to the ib_port_attr structure to indicate the maximum physical MTU the underlying device supports. Link: https://lore.kernel.org/r/20200511160618.173205.23053.stgit@awfm-01.aw.intel.com Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Sadanand Warrier <sadanand.warrier@intel.com> Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_main.c')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index d4c6a97ce4c0..22216f181b24 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1855,7 +1855,7 @@ static int ipoib_parent_init(struct net_device *ndev)
priv->port);
return result;
}
- priv->max_ib_mtu = ib_mtu_enum_to_int(attr.max_mtu);
+ priv->max_ib_mtu = rdma_mtu_from_attr(priv->ca, priv->port, &attr);
result = ib_query_pkey(priv->ca, priv->port, 0, &priv->pkey);
if (result) {