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Subject: [PATCH v2 03/12] svcrdma: Update max_send_sges after QP is created
From: Chuck Lever <cel@kernel.org>
To: linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org
Date: Sun, 04 Feb 2024 18:16:50 -0500
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From: Chuck Lever <chuck.lever@oracle.com>

rdma_create_qp() can modify cap.max_send_sges. Copy the new value
to the svcrdma transport so it is bound by the new limit instead
of the requested one.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 net/sunrpc/xprtrdma/svc_rdma_transport.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 8be0493797cf..839c0e80e5cd 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -467,6 +467,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
 		trace_svcrdma_qp_err(newxprt, ret);
 		goto errout;
 	}
+	newxprt->sc_max_send_sges = qp_attr.cap.max_send_sge;
 	newxprt->sc_qp = newxprt->sc_cm_id->qp;
 
 	if (!(dev->attrs.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS))