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author | Chuck Lever <chuck.lever@oracle.com> | 2014-07-16 19:38:32 (GMT) |
---|---|---|
committer | J. Bruce Fields <bfields@redhat.com> | 2014-07-18 15:35:45 (GMT) |
commit | 3c45ddf823d679a820adddd53b52c6699c9a05ac (patch) | |
tree | ca52538cb038660181621282d82cf5ff54f8d8e6 /net/sunrpc/xprt.c | |
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 'net/sunrpc/xprt.c')
-rw-r--r-- | net/sunrpc/xprt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index c3b2b33..51c6316 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1306,7 +1306,7 @@ struct rpc_xprt *xprt_create_transport(struct xprt_create *args) } } spin_unlock(&xprt_list_lock); - printk(KERN_ERR "RPC: transport (%d) not supported\n", args->ident); + dprintk("RPC: transport (%d) not supported\n", args->ident); return ERR_PTR(-EIO); found: |