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| author | Chuck Lever <chuck.lever@oracle.com> | 2014-07-16 15:38:32 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-09-05 16:34:18 -0700 |
| commit | 96a93162e29169cb7cd5b0343953b6e41b260b1f (patch) | |
| tree | 85c5eb04e4fcd3ca3049f5621f5eefbef2eefb94 /net | |
| parent | 78359f18aa15699d96b613c8cb7b43471c7157da (diff) | |
| download | linux-stable-96a93162e29169cb7cd5b0343953b6e41b260b1f.tar.gz linux-stable-96a93162e29169cb7cd5b0343953b6e41b260b1f.tar.bz2 linux-stable-96a93162e29169cb7cd5b0343953b6e41b260b1f.zip | |
svcrdma: Select NFSv4.1 backchannel transport based on forward channel
commit 3c45ddf823d679a820adddd53b52c6699c9a05ac upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/svcsock.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/xprt.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_transport.c | 1 |
3 files changed, 4 insertions, 1 deletions
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index d06cb8752dcd..5e8fe777772b 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -685,6 +685,7 @@ static struct svc_xprt_class svc_udp_class = { .xcl_owner = THIS_MODULE, .xcl_ops = &svc_udp_ops, .xcl_max_payload = RPCSVC_MAXPAYLOAD_UDP, + .xcl_ident = XPRT_TRANSPORT_UDP, }; static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv) @@ -1279,6 +1280,7 @@ static struct svc_xprt_class svc_tcp_class = { .xcl_owner = THIS_MODULE, .xcl_ops = &svc_tcp_ops, .xcl_max_payload = RPCSVC_MAXPAYLOAD_TCP, + .xcl_ident = XPRT_TRANSPORT_TCP, }; void svc_init_xprt_sock(void) diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 7d4df99f761f..03ac88431984 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1316,7 +1316,7 @@ 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: diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index 62e4f9bcc387..ed36cb52cd86 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -89,6 +89,7 @@ struct svc_xprt_class svc_rdma_class = { .xcl_owner = THIS_MODULE, .xcl_ops = &svc_rdma_ops, .xcl_max_payload = RPCSVC_MAXPAYLOAD_TCP, + .xcl_ident = XPRT_TRANSPORT_RDMA, }; struct svc_rdma_op_ctxt *svc_rdma_get_context(struct svcxprt_rdma *xprt) |