svcrdma: Add a separate "max data segs macro for svcrdma
The server and client maximum are architecturally independent. Allow changing one without affecting the other. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -172,6 +172,13 @@ struct svcxprt_rdma {
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#define RDMAXPRT_SQ_PENDING 2
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#define RDMAXPRT_SQ_PENDING 2
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#define RDMAXPRT_CONN_PENDING 3
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#define RDMAXPRT_CONN_PENDING 3
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#define RPCRDMA_MAX_SVC_SEGS (64) /* server max scatter/gather */
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#if RPCSVC_MAXPAYLOAD < (RPCRDMA_MAX_SVC_SEGS << PAGE_SHIFT)
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#define RPCRDMA_MAXPAYLOAD RPCSVC_MAXPAYLOAD
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#else
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#define RPCRDMA_MAXPAYLOAD (RPCRDMA_MAX_SVC_SEGS << PAGE_SHIFT)
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#endif
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#define RPCRDMA_LISTEN_BACKLOG 10
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#define RPCRDMA_LISTEN_BACKLOG 10
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/* The default ORD value is based on two outstanding full-size writes with a
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/* The default ORD value is based on two outstanding full-size writes with a
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* page size of 4k, or 32k * 2 ops / 4k = 16 outstanding RDMA_READ. */
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* page size of 4k, or 32k * 2 ops / 4k = 16 outstanding RDMA_READ. */
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@ -91,7 +91,7 @@ struct svc_xprt_class svc_rdma_class = {
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.xcl_name = "rdma",
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.xcl_name = "rdma",
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.xcl_owner = THIS_MODULE,
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.xcl_owner = THIS_MODULE,
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.xcl_ops = &svc_rdma_ops,
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.xcl_ops = &svc_rdma_ops,
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.xcl_max_payload = RPCSVC_MAXPAYLOAD_RDMA,
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.xcl_max_payload = RPCRDMA_MAXPAYLOAD,
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.xcl_ident = XPRT_TRANSPORT_RDMA,
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.xcl_ident = XPRT_TRANSPORT_RDMA,
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};
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};
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@ -487,10 +487,4 @@ extern struct kmem_cache *svc_rdma_ctxt_cachep;
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/* Workqueue created in svc_rdma.c */
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/* Workqueue created in svc_rdma.c */
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extern struct workqueue_struct *svc_rdma_wq;
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extern struct workqueue_struct *svc_rdma_wq;
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#if RPCSVC_MAXPAYLOAD < (RPCRDMA_MAX_DATA_SEGS << PAGE_SHIFT)
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#define RPCSVC_MAXPAYLOAD_RDMA RPCSVC_MAXPAYLOAD
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#else
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#define RPCSVC_MAXPAYLOAD_RDMA (RPCRDMA_MAX_DATA_SEGS << PAGE_SHIFT)
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#endif
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#endif /* _LINUX_SUNRPC_XPRT_RDMA_H */
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#endif /* _LINUX_SUNRPC_XPRT_RDMA_H */
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