diff options
Diffstat (limited to 'net/sunrpc/xprtrdma/rpc_rdma.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/rpc_rdma.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index d18614e02b4e..7774aee7c013 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/net/sunrpc/xprtrdma/rpc_rdma.c @@ -164,6 +164,21 @@ static bool rpcrdma_results_inline(struct rpcrdma_xprt *r_xprt, return rqst->rq_rcv_buf.buflen <= ia->ri_max_inline_read; } +/* The client is required to provide a Reply chunk if the maximum + * size of the non-payload part of the RPC Reply is larger than + * the inline threshold. + */ +static bool +rpcrdma_nonpayload_inline(const struct rpcrdma_xprt *r_xprt, + const struct rpc_rqst *rqst) +{ + const struct xdr_buf *buf = &rqst->rq_rcv_buf; + const struct rpcrdma_ia *ia = &r_xprt->rx_ia; + + return buf->head[0].iov_len + buf->tail[0].iov_len < + ia->ri_max_inline_read; +} + /* Split @vec on page boundaries into SGEs. FMR registers pages, not * a byte range. Other modes coalesce these SGEs into a single MR * when they can. @@ -762,7 +777,8 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst) */ if (rpcrdma_results_inline(r_xprt, rqst)) wtype = rpcrdma_noch; - else if (ddp_allowed && rqst->rq_rcv_buf.flags & XDRBUF_READ) + else if ((ddp_allowed && rqst->rq_rcv_buf.flags & XDRBUF_READ) && + rpcrdma_nonpayload_inline(r_xprt, rqst)) wtype = rpcrdma_writech; else wtype = rpcrdma_replych; |