diff options
| author |   Kaike Wan <kaike.wan@intel.com> | 2019-01-23 19:29:44 -0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2019-02-05 17:51:09 -0500 |
| commit | 385156c5f2a61834666f079ee66338f177c65c28 (patch) | |
| tree | 575d1c743c20884bd1d01186aff24139f0011ffb /drivers/infiniband/sw/rdmavt/rc.c | |
| parent | Merge branch 'opfn' into hfi1-tid (diff) | |
| download | linux-dev-385156c5f2a61834666f079ee66338f177c65c28.tar.xz linux-dev-385156c5f2a61834666f079ee66338f177c65c28.zip | |
IB/hfi: Move RC functions into a header file
This patch moves some RC helper functions into a header file so that
they can be called from both RC and TID RDMA functions. In addition,
a common function for rewinding a request is created in rdmavt so that
it can be shared between qib and hfi1 driver.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/sw/rdmavt/rc.c')
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/rc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rdmavt/rc.c b/drivers/infiniband/sw/rdmavt/rc.c index 6131cc558bdb..8d71647820a8 100644 --- a/drivers/infiniband/sw/rdmavt/rc.c +++ b/drivers/infiniband/sw/rdmavt/rc.c @@ -187,3 +187,16 @@ void rvt_get_credit(struct rvt_qp *qp, u32 aeth) } } EXPORT_SYMBOL(rvt_get_credit); + +/* rvt_restart_sge - rewind the sge state for a wqe */ +u32 rvt_restart_sge(struct rvt_sge_state *ss, struct rvt_swqe *wqe, u32 len) +{ + ss->sge = wqe->sg_list[0]; + ss->sg_list = wqe->sg_list + 1; + ss->num_sge = wqe->wr.num_sge; + ss->total_len = wqe->length; + rvt_skip_sge(ss, len, false); + return wqe->length - len; +} +EXPORT_SYMBOL(rvt_restart_sge); + |