diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/xprtrdma/rpc_rdma.c | 2 | ||||
| -rw-r--r-- | net/sunrpc/xprtrdma/verbs.c | 20 |
2 files changed, 18 insertions, 4 deletions
diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index e5e28d1946a4..2ac3f6e8adff 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/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/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 3bdbd9f3b88f..5f4c7b3bc711 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/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: |