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authorChuck Lever <chuck.lever@oracle.com>2019-08-19 18:50:16 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-08-21 14:35:49 -0400
commit17d47f93bc69cc629aa6a20c0ac7b20c9965c116 (patch)
treefa2b178509ba69fe65710cc5365177e28b47ca9f /net/sunrpc
parent2a7f77c7be1b5adb69712e440e97e0c6fa7ebecb (diff)
xprtrdma: Fix bc_max_slots return value
For the moment the returned value just happens to be correct because the current backchannel server implementation does not vary the number of credits it offers. The spec does permit this value to change during the lifetime of a connection, however. The actual maximum is fixed for all RPC/RDMA transports, because each transport instance has to pre-allocate the resources for processing BC requests. That's the value that should be returned. Fixes: 7402a4fedc2b ("SUNRPC: Fix up backchannel slot table ... ") Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/xprtrdma/backchannel.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c
index 59e624b1d7a0..50e075fcdd8f 100644
--- a/net/sunrpc/xprtrdma/backchannel.c
+++ b/net/sunrpc/xprtrdma/backchannel.c
@@ -54,9 +54,7 @@ size_t xprt_rdma_bc_maxpayload(struct rpc_xprt *xprt)
unsigned int xprt_rdma_bc_max_slots(struct rpc_xprt *xprt)
{
- struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
-
- return r_xprt->rx_buf.rb_bc_srv_max_requests;
+ return RPCRDMA_BACKWARD_WRS >> 1;
}
static int rpcrdma_bc_marshal_reply(struct rpc_rqst *rqst)