svcrdma: Fix return value in svc_rdma_send

Fix the return value on close to -ENOTCONN so caller knows to free context.
Also if a thread is waiting for free SQ space, check for close when waking
to avoid posting WR to a closing transport.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>

diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 73734173f9942accec80260e975538b11fa2850c..17f036b23a965e2eca4c32662a784f880d753e49 100644 (file)
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -1002,7 +1002,7 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr)
        int ret;
 
        if (test_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags))
-               return 0;
+               return -ENOTCONN;
 
        BUG_ON(wr->send_flags != IB_SEND_SIGNALED);
        BUG_ON(((struct svc_rdma_op_ctxt *)(unsigned long)wr->wr_id)->wr_op !=