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RDMA/cma: Don't allow IPoIB port space for IBoE

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This patch fixes a kernel crash in cma_set_qkey().

When the link layer is Ethernet, it is wrong to use IPoIB port space
since no IPoIB interface is available.  Specifically, setting the
Q_Key when port space is RDMA_PS_IPOIB requires MGID calculation and
an SA query, which doesn't make sense over Ethernet.

Signed-off-by: Moni Shoua <monis@mellanox.co.il>
Acked-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Moni Shoua 2011-07-12 11:23:15 +00:00 committed by Roland Dreier
parent 0c9361fcde
commit 2efdd6a038
1 changed files with 4 additions and 0 deletions
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4
drivers/infiniband/core/cma.c
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@ -359,6 +359,10 @@ static int cma_acquire_dev(struct rdma_id_private *id_priv)
enum rdma_link_layer dev_ll = dev_addr->dev_type == ARPHRD_INFINIBAND ?
IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
if (dev_ll != IB_LINK_LAYER_INFINIBAND &&
id_priv->id.ps == RDMA_PS_IPOIB)
return -EINVAL;
mutex_lock(&lock);
iboe_addr_get_sgid(dev_addr, &iboe_gid);
memcpy(&gid, dev_addr->src_dev_addr +