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xprtrdma: Clean up device capability detection

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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>
This commit is contained in:
Chuck Lever 2016-06-29 13:53:27 -04:00 committed by Anna Schumaker
parent a473018cfe
commit b54054ca55
4 changed files with 44 additions and 29 deletions
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11
net/sunrpc/xprtrdma/fmr_ops.c
View File

@ -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)
{

17
net/sunrpc/xprtrdma/frwr_ops.c
View File

@ -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)
{

43
net/sunrpc/xprtrdma/verbs.c
View File

@ -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;

2
net/sunrpc/xprtrdma/xprt_rdma.h
View File

@ -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