kernel.git/drivers/infiniband/core, branch linux-2.6.21.y

RDMA/ucma: Avoid sending reject if backlog is full

2007-03-06T22:58:11Z

Change the returned error code to ENOMEM if the connection event backlog is full. This prevents the ib_cm from issuing a reject on the connection, which can allow retries to succeed. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/cma: Initialize rdma_bind_list in cma_alloc_any_port()

2007-03-06T20:41:44Z

The struct rdma_bind_list fields for hlist are not being initialized, resulting in a corrupted list. Fix this by using kzalloc() to make sure all pointers are NULL. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/cma: Remove unused node_guid from cma_device structure

2007-02-23T01:54:35Z

Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

IB/cm: Remove ca_guid from cm_device structure

2007-02-23T01:54:33Z

The cm_device references an ib_device, which already contains the node_guid. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/cma: Request reversible paths only

2007-02-23T01:54:07Z

The rdma_cm requires that path records be reversible. Set the reversible bit when issuing an path record query. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

IB/core: Set hop limit in ib_init_ah_from_wc correctly

2007-02-23T01:54:02Z

The hop_limit value in the ah_attr should be 0xFF, not the value read from the received GRH (which should be 0). See 13.5.4.4 in the 1.2 IB spec. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

IB/uverbs: Return correct error for invalid PD in register MR

2007-02-22T21:16:51Z

If no matching PD is found in ib_uverbs_reg_mr(), then the function jumps to err_release without setting the return value ret. This means that ret will hold the return value of the call to ib_umem_get() a few lines earlier; if the function reaches the point where it looks for the PD, we know that ib_umem_get() must have returned 0, so ib_uverbs_reg_mr() ends up return 0 for a bad PD ID. Fix this by setting ret to -EINVAL before jumping to the exit path when no PD is found. Signed-off-by: Roland Dreier

IB/core: Set static rate in ib_init_ah_from_path()

2007-02-16T23:31:24Z

The static rate from the path record should be put into the address vector -- a long time ago the rate in the address attributes needed to be a relative rate, which required more munging, but now that the conversion from absolute to relative is done in the low-level driver, it's easy for ib_init_ah_from_path() to put the absolute rate in. Cc: Jason Gunthorpe Cc: Sean Hefty Signed-off-by: Roland Dreier

IB/core: Fix sparse warnings about shadowed declarations

2007-02-16T22:41:14Z

Change a couple of variable names to avoid sparse warnings about symbols being shadowed. Signed-off-by: Roland Dreier

RDMA/cma: Add multicast communication support

2007-02-16T22:29:07Z

Extend rdma_cm to support multicast communication. Multicast support is added to the existing RDMA_PS_UDP port space, as well as a new RDMA_PS_IPOIB port space. The latter port space allows joining the multicast groups used by IPoIB, which enables offloading IPoIB traffic to a separate QP. The port space determines the signature used in the MGID when joining the group. The newly added RDMA_PS_IPOIB also allows for unicast operations, similar to RDMA_PS_UDP. Supporting the RDMA_PS_IPOIB requires changing how UD QPs are initialized, since we can no longer assume that the qkey is constant. This requires saving the Q_Key to use when attaching to a device, so that it is available when creating the QP. The Q_Key information is exported to the user through the existing rdma_init_qp_attr() interface. Multicast support is also exported to userspace through the rdma_ucm. Signed-off-by: Roland Dreier