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RDMA/rw: map P2P memory correctly for signature operations 

Since RDMA rw API support operations with P2P memory sg list, make sure to
map/unmap the scatter list for signature operation correctly.

Link: https://lore.kernel.org/r/20200220100819.41860-2-maxg@mellanox.com
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
alistair/sensors
Max Gurtovoy 2020-02-20 12:08:19 +02:00 committed by Jason Gunthorpe
parent 6f00a54c2c
commit 6798241483
1 changed files with 6 additions and 6 deletions
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12
drivers/infiniband/core/rw.c
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@ -391,13 +391,13 @@ int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
return -EINVAL;
}
ret = ib_dma_map_sg(dev, sg, sg_cnt, dir);
ret = rdma_rw_map_sg(dev, sg, sg_cnt, dir);
if (!ret)
return -ENOMEM;
sg_cnt = ret;
if (prot_sg_cnt) {
ret = ib_dma_map_sg(dev, prot_sg, prot_sg_cnt, dir);
ret = rdma_rw_map_sg(dev, prot_sg, prot_sg_cnt, dir);
if (!ret) {
ret = -ENOMEM;
goto out_unmap_sg;
@ -466,9 +466,9 @@ out_free_ctx:
kfree(ctx->reg);
out_unmap_prot_sg:
if (prot_sg_cnt)
ib_dma_unmap_sg(dev, prot_sg, prot_sg_cnt, dir);
rdma_rw_unmap_sg(dev, prot_sg, prot_sg_cnt, dir);
out_unmap_sg:
ib_dma_unmap_sg(dev, sg, sg_cnt, dir);
rdma_rw_unmap_sg(dev, sg, sg_cnt, dir);
return ret;
}
EXPORT_SYMBOL(rdma_rw_ctx_signature_init);
@ -628,9 +628,9 @@ void rdma_rw_ctx_destroy_signature(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr);
kfree(ctx->reg);
ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
if (prot_sg_cnt)
ib_dma_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir);
rdma_rw_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir);
rdma_rw_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
}
EXPORT_SYMBOL(rdma_rw_ctx_destroy_signature);