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| author | Chuck Lever <chuck.lever@oracle.com> | 2016-06-29 13:53:27 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-07-11 15:50:43 -0400 |
| commit | b54054ca5590f59469437fc4a78a978edcb01c31 (patch) | |
| tree | 2523f55eee453aa189fa0fa8a482ee1ab35f695c /net/sunrpc/xprtrdma/frwr_ops.c | |
| parent | a473018cfe0ef1e46c0ff9df3fa02afc23c9f1d2 (diff) | |
| download | lwn-b54054ca5590f59469437fc4a78a978edcb01c31.tar.gz lwn-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/sunrpc/xprtrdma/frwr_ops.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/frwr_ops.c | 17 |
1 files changed, 17 insertions, 0 deletions
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) { |