diff options
author | Steve Wise <swise@opengridcomputing.com> | 2008-07-14 23:48:53 -0700 |
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committer | Roland Dreier <rolandd@cisco.com> | 2008-07-14 23:48:53 -0700 |
commit | 4ab928f69208d240d3681336f34589e4b151824f (patch) | |
tree | aca612ffbf703870cac63efb5ec5d8955ac2bc3c /drivers/infiniband/hw/cxgb3/iwch_mem.c | |
parent | 96f15c03532282366364ecfd20f04e49b5d96f3a (diff) |
RDMA/cxgb3: Fixes for zero STag
Handling the zero STag in receive work request requires some extra
logic in the driver:
- Only set the QP_PRIV bit for kernel mode QPs.
- Add a zero STag build function for recv wrs. The uP needs a PBL
allocated and passed down in the recv WR so it can construct a HW
PBL for the zero STag S/G entries. Note: we need to place a few
restrictions on zero STag usage because of this:
1) all SGEs in a recv WR must either be zero STag or not. No mixing.
2) an individual SGE length cannot exceed 128MB for a zero-stag SGE.
This should be OK since it's not really practical to allocate
such a large chunk of pinned contiguous DMA mapped memory.
- Add an optimized non-zero-STag recv wr format for kernel users.
This is needed to optimize both zero and non-zero STag cracking in
the recv path for kernel users.
- Remove the iwch_ prefix from the static build functions.
- Bump required FW version.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb3/iwch_mem.c')
0 files changed, 0 insertions, 0 deletions