summaryrefslogtreecommitdiffstats
path: root/net
diff options
context:
space:
mode:
authorChuck Lever <chuck.lever@oracle.com>2016-06-29 13:53:27 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2016-07-11 15:50:43 -0400
commitb54054ca5590f59469437fc4a78a978edcb01c31 (patch)
tree2523f55eee453aa189fa0fa8a482ee1ab35f695c /net
parenta473018cfe0ef1e46c0ff9df3fa02afc23c9f1d2 (diff)
downloadblackbird-op-linux-b54054ca5590f59469437fc4a78a978edcb01c31.tar.gz
blackbird-op-linux-b54054ca5590f59469437fc4a78a978edcb01c31.zip
xprtrdma: Clean up device capability detection
Clean up: Move device capability detection into memreg-specific source files. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Tested-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/xprtrdma/fmr_ops.c11
-rw-r--r--net/sunrpc/xprtrdma/frwr_ops.c17
-rw-r--r--net/sunrpc/xprtrdma/verbs.c43
-rw-r--r--net/sunrpc/xprtrdma/xprt_rdma.h2
4 files changed, 44 insertions, 29 deletions
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c
index 6c4527b6c3ca..8b6ce8ebe60f 100644
--- a/net/sunrpc/xprtrdma/fmr_ops.c
+++ b/net/sunrpc/xprtrdma/fmr_ops.c
@@ -34,6 +34,17 @@ enum {
IB_ACCESS_REMOTE_READ,
};
+bool
+fmr_is_supported(struct rpcrdma_ia *ia)
+{
+ if (!ia->ri_device->alloc_fmr) {
+ pr_info("rpcrdma: 'fmr' mode is not supported by device %s\n",
+ ia->ri_device->name);
+ return false;
+ }
+ return true;
+}
+
static int
__fmr_init(struct rpcrdma_mw *mw, struct ib_pd *pd)
{
diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c
index c9ead2b01b66..fc2826b3518c 100644
--- a/net/sunrpc/xprtrdma/frwr_ops.c
+++ b/net/sunrpc/xprtrdma/frwr_ops.c
@@ -73,6 +73,23 @@
# define RPCDBG_FACILITY RPCDBG_TRANS
#endif
+bool
+frwr_is_supported(struct rpcrdma_ia *ia)
+{
+ struct ib_device_attr *attrs = &ia->ri_device->attrs;
+
+ if (!(attrs->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS))
+ goto out_not_supported;
+ if (attrs->max_fast_reg_page_list_len == 0)
+ goto out_not_supported;
+ return true;
+
+out_not_supported:
+ pr_info("rpcrdma: 'frwr' mode is not supported by device %s\n",
+ ia->ri_device->name);
+ return false;
+}
+
static int
__frwr_init(struct rpcrdma_mw *r, struct ib_pd *pd, unsigned int depth)
{
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index b80e767fe687..cd4c5f1d554a 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -389,44 +389,29 @@ rpcrdma_ia_open(struct rpcrdma_xprt *xprt, struct sockaddr *addr, int memreg)
ia->ri_pd = ib_alloc_pd(ia->ri_device);
if (IS_ERR(ia->ri_pd)) {
rc = PTR_ERR(ia->ri_pd);
- dprintk("RPC: %s: ib_alloc_pd() failed %i\n",
- __func__, rc);
+ pr_err("rpcrdma: ib_alloc_pd() returned %d\n", rc);
goto out2;
}
- if (memreg == RPCRDMA_FRMR) {
- if (!(ia->ri_device->attrs.device_cap_flags &
- IB_DEVICE_MEM_MGT_EXTENSIONS) ||
- (ia->ri_device->attrs.max_fast_reg_page_list_len == 0)) {
- dprintk("RPC: %s: FRMR registration "
- "not supported by HCA\n", __func__);
- memreg = RPCRDMA_MTHCAFMR;
- }
- }
- if (memreg == RPCRDMA_MTHCAFMR) {
- if (!ia->ri_device->alloc_fmr) {
- dprintk("RPC: %s: MTHCAFMR registration "
- "not supported by HCA\n", __func__);
- rc = -EINVAL;
- goto out3;
- }
- }
-
switch (memreg) {
case RPCRDMA_FRMR:
- ia->ri_ops = &rpcrdma_frwr_memreg_ops;
- break;
+ if (frwr_is_supported(ia)) {
+ ia->ri_ops = &rpcrdma_frwr_memreg_ops;
+ break;
+ }
+ /*FALLTHROUGH*/
case RPCRDMA_MTHCAFMR:
- ia->ri_ops = &rpcrdma_fmr_memreg_ops;
- break;
+ if (fmr_is_supported(ia)) {
+ ia->ri_ops = &rpcrdma_fmr_memreg_ops;
+ break;
+ }
+ /*FALLTHROUGH*/
default:
- printk(KERN_ERR "RPC: Unsupported memory "
- "registration mode: %d\n", memreg);
- rc = -ENOMEM;
+ pr_err("rpcrdma: Unsupported memory registration mode: %d\n",
+ memreg);
+ rc = -EINVAL;
goto out3;
}
- dprintk("RPC: %s: memory registration strategy is '%s'\n",
- __func__, ia->ri_ops->ro_displayname);
return 0;
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index f1b6f2fb5355..08d441d65a83 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -446,6 +446,8 @@ extern int xprt_rdma_pad_optimize;
*/
int rpcrdma_ia_open(struct rpcrdma_xprt *, struct sockaddr *, int);
void rpcrdma_ia_close(struct rpcrdma_ia *);
+bool frwr_is_supported(struct rpcrdma_ia *);
+bool fmr_is_supported(struct rpcrdma_ia *);
/*
* Endpoint calls - xprtrdma/verbs.c
OpenPOWER on IntegriCloud