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| author | Chuck Lever <chuck.lever@oracle.com> | 2014-07-16 23:38:32 +0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-07-18 19:35:45 +0400 |
| commit | 3c45ddf823d679a820adddd53b52c6699c9a05ac (patch) | |
| tree | ca52538cb038660181621282d82cf5ff54f8d8e6 /include/linux/sunrpc | |
| parent | 5d6031ca742f9f07b9c9d9322538619f3bd155ac (diff) | |
| download | linux-3c45ddf823d679a820adddd53b52c6699c9a05ac.tar.xz | |
svcrdma: Select NFSv4.1 backchannel transport based on forward channel
The current code always selects XPRT_TRANSPORT_BC_TCP for the back
channel, even when the forward channel was not TCP (eg, RDMA). When
a 4.1 mount is attempted with RDMA, the server panics in the TCP BC
code when trying to send CB_NULL.
Instead, construct the transport protocol number from the forward
channel transport or'd with XPRT_TRANSPORT_BC. Transports that do
not support bi-directional RPC will not have registered a "BC"
transport, causing create_backchannel_client() to fail immediately.
Fixes: https://bugzilla.linux-nfs.org/show_bug.cgi?id=265
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'include/linux/sunrpc')
| -rw-r--r-- | include/linux/sunrpc/svc_xprt.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h index 7235040a19b2..5d9d6f84b382 100644 --- a/include/linux/sunrpc/svc_xprt.h +++ b/include/linux/sunrpc/svc_xprt.h @@ -33,6 +33,7 @@ struct svc_xprt_class { struct svc_xprt_ops *xcl_ops; struct list_head xcl_list; u32 xcl_max_payload; + int xcl_ident; }; /* |