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RDMA/hns: Filter for zero length of sge in hip08 kernel mode 

When the length of sge is zero, the driver need to filter it

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
oulijun 2018-01-03 10:44:06 +08:00 committed by Jason Gunthorpe
parent ace1c5416b
commit 52e3b42a2f
1 changed files with 20 additions and 9 deletions
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29
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
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@ -230,26 +230,37 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
V2_RC_SEND_WQE_BYTE_4_INLINE_S, 1);
} else {
if (wr->num_sge <= 2) {
for (i = 0; i < wr->num_sge; i++)
set_data_seg_v2(dseg + i,
wr->sg_list + i);
for (i = 0; i < wr->num_sge; i++) {
if (likely(wr->sg_list[i].length)) {
set_data_seg_v2(dseg,
wr->sg_list + i);
dseg++;
}
}
} else {
roce_set_field(rc_sq_wqe->byte_20,
V2_RC_SEND_WQE_BYTE_20_MSG_START_SGE_IDX_M,
V2_RC_SEND_WQE_BYTE_20_MSG_START_SGE_IDX_S,
sge_ind & (qp->sge.sge_cnt - 1));
for (i = 0; i < 2; i++)
set_data_seg_v2(dseg + i,
wr->sg_list + i);
for (i = 0; i < 2; i++) {
if (likely(wr->sg_list[i].length)) {
set_data_seg_v2(dseg,
wr->sg_list + i);
dseg++;
}
}
dseg = get_send_extend_sge(qp,
sge_ind & (qp->sge.sge_cnt - 1));
for (i = 0; i < wr->num_sge - 2; i++) {
set_data_seg_v2(dseg + i,
wr->sg_list + 2 + i);
sge_ind++;
if (likely(wr->sg_list[i + 2].length)) {
set_data_seg_v2(dseg,
wr->sg_list + 2 + i);
dseg++;
sge_ind++;
}
}
}