[PATCH V3 5/5] xprtrdma: Use transport independent MR allocation

Steve Wise
2015-07-05T23:22:25Z

Use rdma_get_dma_mr() to allocat DMA MRs.

Use rdma_fast_reg_access_flags() to compute the needed access flags in
fast register operations.

Signed-off-by: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
---

net/sunrpc/xprtrdma/frwr_ops.c | 6 ++++--
net/sunrpc/xprtrdma/verbs.c | 11 +++++------
2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index d234521..240880e 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -227,8 +227,10 @@ frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
fastreg_wr.wr.fast_reg.page_list_len = page_no;
fastreg_wr.wr.fast_reg.length = len;
fastreg_wr.wr.fast_reg.access_flags = writing ?
- IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
- IB_ACCESS_REMOTE_READ;
+ rdma_fast_reg_access_flags(r_xprt->rx_ia.ri_pd,
+ RDMA_MRR_WRITE_DEST, 0) :
+ rdma_fast_reg_access_flags(r_xprt->rx_ia.ri_pd,
+ RDMA_MRR_READ_SOURCE, 0);
key = (u8)(mr->rkey & 0x000000FF);
ib_update_fast_reg_key(mr, ++key);
fastreg_wr.wr.fast_reg.rkey = mr->rkey;
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 52df265..4ab5dc9 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -499,7 +499,7 @@ rpcrdma_clean_cq(struct ib_cq *cq)
int
rpcrdma_ia_open(struct rpcrdma_xprt *xprt, struct sockaddr *addr, int memreg)
{
- int rc, mem_priv;
+ int rc, mem_roles;
struct rpcrdma_ia *ia = &xprt->rx_ia;
struct ib_device_attr *devattr = &ia->ri_devattr;

@@ -562,17 +562,16 @@ rpcrdma_ia_open(struct rpcrdma_xprt *xprt, struct sockaddr *addr, int memreg)
break;
case RPCRDMA_ALLPHYSICAL:
ia->ri_ops = &rpcrdma_physical_memreg_ops;
- mem_priv = IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_READ;
+ mem_roles = RDMA_MRR_SEND | RDMA_MRR_RECV |
+ RDMA_MRR_WRITE_DEST | RDMA_MRR_READ_SOURCE;
goto register_setup;
case RPCRDMA_MTHCAFMR:
ia->ri_ops = &rpcrdma_fmr_memreg_ops;
if (ia->ri_have_dma_lkey)
break;
- mem_priv = IB_ACCESS_LOCAL_WRITE;
+ mem_roles = RDMA_MRR_SEND | RDMA_MRR_RECV;
register_setup:
- ia->ri_bind_mem = ib_get_dma_mr(ia->ri_pd, mem_priv);
+ ia->ri_bind_mem = rdma_get_dma_mr(ia->ri_pd, mem_roles, 0);
if (IS_ERR(ia->ri_bind_mem)) {
printk(KERN_ALERT "%s: ib_get_dma_mr for "
"phys register failed with %lX\n",

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