---

yaml --- r: 209658 b: refs/heads/master c: 15cdc64 h: refs/heads/master v: v3
git-mirror · Aug 11, 2010 · 3993516 · 3993516
1 parent c18ec7e
commit 3993516
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Showing 3 changed files with 19 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7a8b80eb38b248cfdf84048dad12073d5cfba3e6
+refs/heads/master: 15cdc644b268a9a9ce73ce0b153129222c254b7b
diff --git a/trunk/net/sunrpc/xprtrdma/rpc_rdma.c b/trunk/net/sunrpc/xprtrdma/rpc_rdma.c
@@ -249,6 +249,8 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
 	req->rl_nchunks = nchunks;
 
 	BUG_ON(nchunks == 0);
+	BUG_ON((r_xprt->rx_ia.ri_memreg_strategy == RPCRDMA_FRMR)
+	       && (nchunks > 3));
 
 	/*
 	 * finish off header. If write, marshal discrim and nchunks.

diff --git a/trunk/net/sunrpc/xprtrdma/verbs.c b/trunk/net/sunrpc/xprtrdma/verbs.c
@@ -650,10 +650,22 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
 	ep->rep_attr.cap.max_send_wr = cdata->max_requests;
 	switch (ia->ri_memreg_strategy) {
 	case RPCRDMA_FRMR:
-		/* Add room for frmr register and invalidate WRs */
-		ep->rep_attr.cap.max_send_wr *= 3;
-		if (ep->rep_attr.cap.max_send_wr > devattr.max_qp_wr)
-			return -EINVAL;
+		/* Add room for frmr register and invalidate WRs.
+		 * 1. FRMR reg WR for head
+		 * 2. FRMR invalidate WR for head
+		 * 3. FRMR reg WR for pagelist
+		 * 4. FRMR invalidate WR for pagelist
+		 * 5. FRMR reg WR for tail
+		 * 6. FRMR invalidate WR for tail
+		 * 7. The RDMA_SEND WR
+		 */
+		ep->rep_attr.cap.max_send_wr *= 7;
+		if (ep->rep_attr.cap.max_send_wr > devattr.max_qp_wr) {
+			cdata->max_requests = devattr.max_qp_wr / 7;
+			if (!cdata->max_requests)
+				return -EINVAL;
+			ep->rep_attr.cap.max_send_wr = cdata->max_requests * 7;
+		}
 		break;
 	case RPCRDMA_MEMWINDOWS_ASYNC:
 	case RPCRDMA_MEMWINDOWS: