diff options
| author | Sean Hefty <sean.hefty@intel.com> | 2011-08-08 15:31:51 -0700 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2011-10-13 09:49:51 -0700 |
| commit | 0e0ec7e0638ef48e0c661873dfcc8caccab984c6 (patch) | |
| tree | 54314a25a402244036a5417f098c70af441a56a8 /drivers/infiniband/core/uverbs_cmd.c | |
| parent | 0a1405da9952a72dd587829a3321695adde7dca1 (diff) | |
RDMA/core: Export ib_open_qp() to share XRC TGT QPs
XRC TGT QPs are shared resources among multiple processes. Since the
creating process may exit, allow other processes which share the same
XRC domain to open an existing QP. This allows us to transfer
ownership of an XRC TGT QP to another process.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/core/uverbs_cmd.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 9058e38ca4cd..c4c308cd2034 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1463,6 +1463,7 @@ ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, } if (cmd.qp_type != IB_QPT_XRC_TGT) { + qp->real_qp = qp; qp->device = device; qp->pd = pd; qp->send_cq = attr.send_cq; @@ -1729,8 +1730,12 @@ ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; - ret = qp->device->modify_qp(qp, attr, - modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); + if (qp->real_qp == qp) { + ret = qp->device->modify_qp(qp, attr, + modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); + } else { + ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); + } put_qp_read(qp); @@ -1927,7 +1932,7 @@ ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, } resp.bad_wr = 0; - ret = qp->device->post_send(qp, wr, &bad_wr); + ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); if (ret) for (next = wr; next; next = next->next) { ++resp.bad_wr; @@ -2065,7 +2070,7 @@ ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, goto out; resp.bad_wr = 0; - ret = qp->device->post_recv(qp, wr, &bad_wr); + ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); put_qp_read(qp); |